f_000022

define(['dart_sdk', 'packages/flutter/src/rendering/layer.dart', 'packages/vector_math/vector_math_64.dart', 'packages/flutter/src/foundation/debug.dart', 'packages/flutter/src/rendering/layout_helper.dart', 'packages/flutter/src/animation/listener_helpers.dart', 'packages/flutter/src/foundation/object.dart', 'packages/flutter/src/foundation/change_notifier.dart', 'packages/flutter/src/painting/borders.dart', 'packages/flutter/src/painting/placeholder_span.dart', 'packages/flutter/src/painting/strut_style.dart', 'packages/flutter/src/painting/border_radius.dart', 'packages/flutter/src/painting/colors.dart', 'packages/flutter/src/painting/box_border.dart', 'packages/flutter/src/painting/debug.dart', 'packages/flutter/src/painting/_network_image_web.dart', 'packages/flutter/src/painting/decoration.dart', 'packages/flutter/src/painting/matrix_utils.dart', 'packages/flutter/src/painting/alignment.dart', 'packages/flutter/src/painting/box_fit.dart', 'packages/flutter/src/gestures/hit_test.dart', 'packages/flutter/src/gestures/events.dart', 'packages/flutter/src/foundation/collections.dart', 'packages/flutter/src/gestures/drag_details.dart', 'packages/flutter/src/semantics/semantics.dart', 'packages/flutter/src/services/text_editing.dart'], (function load__packages__flutter__src__rendering__proxy_box_dart(dart_sdk, packages__flutter__src__rendering__layer$46dart, packages__vector_math__vector_math_64$46dart, packages__flutter__src__foundation__debug$46dart, packages__flutter__src__rendering__layout_helper$46dart, packages__flutter__src__animation__listener_helpers$46dart, packages__flutter__src__foundation__object$46dart, packages__flutter__src__foundation__change_notifier$46dart, packages__flutter__src__painting__borders$46dart, packages__flutter__src__painting__placeholder_span$46dart, packages__flutter__src__painting__strut_style$46dart, packages__flutter__src__painting__border_radius$46dart, packages__flutter__src__painting__colors$46dart, packages__flutter__src__painting__box_border$46dart, packages__flutter__src__painting__debug$46dart, packages__flutter__src__painting___network_image_web$46dart, packages__flutter__src__painting__decoration$46dart, packages__flutter__src__painting__matrix_utils$46dart, packages__flutter__src__painting__alignment$46dart, packages__flutter__src__painting__box_fit$46dart, packages__flutter__src__gestures__hit_test$46dart, packages__flutter__src__gestures__events$46dart, packages__flutter__src__foundation__collections$46dart, packages__flutter__src__gestures__drag_details$46dart, packages__flutter__src__semantics__semantics$46dart, packages__flutter__src__services__text_editing$46dart) {
  'use strict';
  const core = dart_sdk.core;
  const ui = dart_sdk.ui;
  const _interceptors = dart_sdk._interceptors;
  const _internal = dart_sdk._internal;
  const _js_helper = dart_sdk._js_helper;
  const async = dart_sdk.async;
  const dart = dart_sdk.dart;
  const dartx = dart_sdk.dartx;
  const box = packages__flutter__src__rendering__layer$46dart.src__rendering__box;
  const object = packages__flutter__src__rendering__layer$46dart.src__rendering__object;
  const layer = packages__flutter__src__rendering__layer$46dart.src__rendering__layer;
  const mouse_cursor = packages__flutter__src__rendering__layer$46dart.src__rendering__mouse_cursor;
  const mouse_tracking = packages__flutter__src__rendering__layer$46dart.src__rendering__mouse_tracking;
  const vector_math_64 = packages__vector_math__vector_math_64$46dart.vector_math_64;
  const diagnostics = packages__flutter__src__foundation__debug$46dart.src__foundation__diagnostics;
  const assertions = packages__flutter__src__foundation__debug$46dart.src__foundation__assertions;
  const layout_helper = packages__flutter__src__rendering__layout_helper$46dart.src__rendering__layout_helper;
  const animation = packages__flutter__src__animation__listener_helpers$46dart.src__animation__animation;
  const object$ = packages__flutter__src__foundation__object$46dart.src__foundation__object;
  const change_notifier = packages__flutter__src__foundation__change_notifier$46dart.src__foundation__change_notifier;
  const borders = packages__flutter__src__painting__borders$46dart.src__painting__borders;
  const text_painter = packages__flutter__src__painting__placeholder_span$46dart.src__painting__text_painter;
  const text_span = packages__flutter__src__painting__placeholder_span$46dart.src__painting__text_span;
  const inline_span = packages__flutter__src__painting__placeholder_span$46dart.src__painting__inline_span;
  const text_style = packages__flutter__src__painting__strut_style$46dart.src__painting__text_style;
  const border_radius = packages__flutter__src__painting__border_radius$46dart.src__painting__border_radius;
  const colors = packages__flutter__src__painting__colors$46dart.src__painting__colors;
  const box_border = packages__flutter__src__painting__box_border$46dart.src__painting__box_border;
  const debug = packages__flutter__src__painting__debug$46dart.src__painting__debug;
  const image_provider = packages__flutter__src__painting___network_image_web$46dart.src__painting__image_provider;
  const decoration = packages__flutter__src__painting__decoration$46dart.src__painting__decoration;
  const matrix_utils = packages__flutter__src__painting__matrix_utils$46dart.src__painting__matrix_utils;
  const alignment = packages__flutter__src__painting__alignment$46dart.src__painting__alignment;
  const box_fit = packages__flutter__src__painting__box_fit$46dart.src__painting__box_fit;
  const hit_test = packages__flutter__src__gestures__hit_test$46dart.src__gestures__hit_test;
  const events = packages__flutter__src__gestures__events$46dart.src__gestures__events;
  const collections = packages__flutter__src__foundation__collections$46dart.src__foundation__collections;
  const drag_details = packages__flutter__src__gestures__drag_details$46dart.src__gestures__drag_details;
  const semantics = packages__flutter__src__semantics__semantics$46dart.src__semantics__semantics;
  const text_editing = packages__flutter__src__services__text_editing$46dart.src__services__text_editing;
  var proxy_box = Object.create(dart.library);
  var $isFinite = dartx.isFinite;
  var $runtimeType = dartx.runtimeType;
  var $ceil = dartx.ceil;
  var $every = dartx.every;
  var $add = dartx.add;
  var $isEmpty = dartx.isEmpty;
  dart._checkModuleNullSafetyMode(false);
  var T$ = {
    HitTestBehaviorL: () => (T$.HitTestBehaviorL = dart.constFn(dart.legacy(proxy_box.HitTestBehavior)))(),
    EnumPropertyOfHitTestBehavior: () => (T$.EnumPropertyOfHitTestBehavior = dart.constFn(diagnostics.EnumProperty$(proxy_box.HitTestBehavior)))(),
    VoidTobool: () => (T$.VoidTobool = dart.constFn(dart.fnType(core.bool, [])))(),
    DiagnosticsPropertyOfBoxConstraints: () => (T$.DiagnosticsPropertyOfBoxConstraints = dart.constFn(diagnostics.DiagnosticsProperty$(box.BoxConstraints)))(),
    RenderBoxAndBoxConstraintsToSize: () => (T$.RenderBoxAndBoxConstraintsToSize = dart.constFn(dart.fnType(ui.Size, [box.RenderBox, box.BoxConstraints])))(),
    OpacityLayerN: () => (T$.OpacityLayerN = dart.constFn(dart.nullable(layer.OpacityLayer)))(),
    AnimationOfdouble: () => (T$.AnimationOfdouble = dart.constFn(animation.Animation$(core.double)))(),
    DiagnosticsPropertyOfAnimationOfdouble: () => (T$.DiagnosticsPropertyOfAnimationOfdouble = dart.constFn(diagnostics.DiagnosticsProperty$(T$.AnimationOfdouble())))(),
    ShaderMaskLayerN: () => (T$.ShaderMaskLayerN = dart.constFn(dart.nullable(layer.ShaderMaskLayer)))(),
    BackdropFilterLayerN: () => (T$.BackdropFilterLayerN = dart.constFn(dart.nullable(layer.BackdropFilterLayer)))(),
    CustomClipperOfPath: () => (T$.CustomClipperOfPath = dart.constFn(proxy_box.CustomClipper$(ui.Path)))(),
    JSArrayOfColor: () => (T$.JSArrayOfColor = dart.constFn(_interceptors.JSArray$(ui.Color)))(),
    JSArrayOfdouble: () => (T$.JSArrayOfdouble = dart.constFn(_interceptors.JSArray$(core.double)))(),
    ClipRectLayerN: () => (T$.ClipRectLayerN = dart.constFn(dart.nullable(layer.ClipRectLayer)))(),
    ClipRRectLayerN: () => (T$.ClipRRectLayerN = dart.constFn(dart.nullable(layer.ClipRRectLayer)))(),
    ClipPathLayerN: () => (T$.ClipPathLayerN = dart.constFn(dart.nullable(layer.ClipPathLayer)))(),
    PhysicalModelLayerN: () => (T$.PhysicalModelLayerN = dart.constFn(dart.nullable(layer.PhysicalModelLayer)))(),
    DiagnosticsPropertyOfBoxShape: () => (T$.DiagnosticsPropertyOfBoxShape = dart.constFn(diagnostics.DiagnosticsProperty$(box_border.BoxShape)))(),
    DiagnosticsPropertyOfBorderRadius: () => (T$.DiagnosticsPropertyOfBorderRadius = dart.constFn(diagnostics.DiagnosticsProperty$(border_radius.BorderRadius)))(),
    DiagnosticsPropertyOfCustomClipperOfPath: () => (T$.DiagnosticsPropertyOfCustomClipperOfPath = dart.constFn(diagnostics.DiagnosticsProperty$(T$.CustomClipperOfPath())))(),
    DecorationPositionL: () => (T$.DecorationPositionL = dart.constFn(dart.legacy(proxy_box.DecorationPosition)))(),
    DiagnosticsPropertyOfDecoration: () => (T$.DiagnosticsPropertyOfDecoration = dart.constFn(diagnostics.DiagnosticsProperty$(decoration.Decoration)))(),
    DiagnosticsPropertyOfBoxPainter: () => (T$.DiagnosticsPropertyOfBoxPainter = dart.constFn(diagnostics.DiagnosticsProperty$(decoration.BoxPainter)))(),
    JSArrayOfDiagnosticsNode: () => (T$.JSArrayOfDiagnosticsNode = dart.constFn(_interceptors.JSArray$(diagnostics.DiagnosticsNode)))(),
    DiagnosticsPropertyOfImageConfiguration: () => (T$.DiagnosticsPropertyOfImageConfiguration = dart.constFn(diagnostics.DiagnosticsProperty$(image_provider.ImageConfiguration)))(),
    OffsetN: () => (T$.OffsetN = dart.constFn(dart.nullable(ui.Offset)))(),
    BoxHitTestResultAndOffsetNTobool: () => (T$.BoxHitTestResultAndOffsetNTobool = dart.constFn(dart.fnType(core.bool, [box.BoxHitTestResult, T$.OffsetN()])))(),
    TransformLayerN: () => (T$.TransformLayerN = dart.constFn(dart.nullable(layer.TransformLayer)))(),
    DiagnosticsPropertyOfOffset: () => (T$.DiagnosticsPropertyOfOffset = dart.constFn(diagnostics.DiagnosticsProperty$(ui.Offset)))(),
    DiagnosticsPropertyOfAlignmentGeometry: () => (T$.DiagnosticsPropertyOfAlignmentGeometry = dart.constFn(diagnostics.DiagnosticsProperty$(alignment.AlignmentGeometry)))(),
    EnumPropertyOfTextDirection: () => (T$.EnumPropertyOfTextDirection = dart.constFn(diagnostics.EnumProperty$(ui.TextDirection)))(),
    DiagnosticsPropertyOfbool: () => (T$.DiagnosticsPropertyOfbool = dart.constFn(diagnostics.DiagnosticsProperty$(core.bool)))(),
    doubleTobool: () => (T$.doubleTobool = dart.constFn(dart.fnType(core.bool, [core.double])))(),
    EnumPropertyOfBoxFit: () => (T$.EnumPropertyOfBoxFit = dart.constFn(diagnostics.EnumProperty$(box_fit.BoxFit)))(),
    FunctionN: () => (T$.FunctionN = dart.constFn(dart.nullable(core.Function)))(),
    FlagsSummaryOfFunctionN: () => (T$.FlagsSummaryOfFunctionN = dart.constFn(diagnostics.FlagsSummary$(T$.FunctionN())))(),
    IdentityMapOfString$FunctionN: () => (T$.IdentityMapOfString$FunctionN = dart.constFn(_js_helper.IdentityMap$(core.String, T$.FunctionN())))(),
    DiagnosticsPropertyOfMouseCursor: () => (T$.DiagnosticsPropertyOfMouseCursor = dart.constFn(diagnostics.DiagnosticsProperty$(mouse_cursor.MouseCursor)))(),
    JSArrayOfString: () => (T$.JSArrayOfString = dart.constFn(_interceptors.JSArray$(core.String)))(),
    IterablePropertyOfString: () => (T$.IterablePropertyOfString = dart.constFn(diagnostics.IterableProperty$(core.String)))(),
    DiagnosticsPropertyOfint: () => (T$.DiagnosticsPropertyOfint = dart.constFn(diagnostics.DiagnosticsProperty$(core.int)))(),
    DiagnosticsPropertyOfLayerLink: () => (T$.DiagnosticsPropertyOfLayerLink = dart.constFn(diagnostics.DiagnosticsProperty$(layer.LayerLink)))(),
    FollowerLayerN: () => (T$.FollowerLayerN = dart.constFn(dart.nullable(layer.FollowerLayer)))()
  };
  var T$Eval = Object.assign({
    _: () => T$Eval
  }, T$);
  var S = {
    _: () => S
  };
  var S$Eval = Object.assign({
    _: () => S$Eval
  }, S);
  const CT = Object.create({
    _: () => (C, CT)
  });
  dart.defineLazy(CT, {
    get C0() {
      return C[0] = dart.const({
        __proto__: proxy_box.HitTestBehavior.prototype,
        [_name$]: "HitTestBehavior.deferToChild",
        index: 0
      });
    },
    get C1() {
      return C[1] = dart.const({
        __proto__: proxy_box.HitTestBehavior.prototype,
        [_name$]: "HitTestBehavior.opaque",
        index: 1
      });
    },
    get C2() {
      return C[2] = dart.const({
        __proto__: proxy_box.HitTestBehavior.prototype,
        [_name$]: "HitTestBehavior.translucent",
        index: 2
      });
    },
    get C3() {
      return C[3] = dart.constList([C[0] || CT.C0, C[1] || CT.C1, C[2] || CT.C2], T$.HitTestBehaviorL());
    },
    get C4() {
      return C[4] = dart.const({
        __proto__: ui.Color.prototype,
        [Color_value]: 2425393296.0
      });
    },
    get C5() {
      return C[5] = dart.fn(layout_helper.ChildLayoutHelper.dryLayoutChild, T$.RenderBoxAndBoxConstraintsToSize());
    },
    get C6() {
      return C[6] = dart.fn(layout_helper.ChildLayoutHelper.layoutChild, T$.RenderBoxAndBoxConstraintsToSize());
    },
    get C7() {
      return C[7] = dart.const({
        __proto__: ui.BlendMode.prototype,
        [_name]: "BlendMode.modulate",
        index: 13
      });
    },
    get C8() {
      return C[8] = dart.const({
        __proto__: ui.Clip.prototype,
        [_name]: "Clip.antiAlias",
        index: 2
      });
    },
    get C9() {
      return C[9] = dart.const({
        __proto__: ui.Offset.prototype,
        [OffsetBase__dy]: 10,
        [OffsetBase__dx]: 10
      });
    },
    get C10() {
      return C[10] = dart.const({
        __proto__: ui.Color.prototype,
        [Color_value]: 0
      });
    },
    get C11() {
      return C[11] = dart.const({
        __proto__: ui.Color.prototype,
        [Color_value]: 4294902015.0
      });
    },
    get C13() {
      return C[13] = dart.const({
        __proto__: text_style.TextStyle.prototype,
        [TextStyle_fontFeatures]: null,
        [TextStyle_shadows]: null,
        [TextStyle_debugLabel]: null,
        [TextStyle_decorationThickness]: null,
        [TextStyle_decorationStyle]: null,
        [TextStyle_decorationColor]: null,
        [TextStyle_decoration]: null,
        [TextStyle_background]: null,
        [TextStyle_foreground]: null,
        [TextStyle_locale]: null,
        [TextStyle_height]: null,
        [TextStyle_textBaseline]: null,
        [TextStyle_wordSpacing]: null,
        [TextStyle_letterSpacing]: null,
        [TextStyle_fontStyle]: null,
        [TextStyle_fontWeight]: null,
        [TextStyle_fontSize]: 14,
        [TextStyle__package]: null,
        [TextStyle__fontFamilyFallback]: null,
        [TextStyle_fontFamily]: null,
        [TextStyle_backgroundColor]: null,
        [TextStyle_color]: C[11] || CT.C11,
        [TextStyle_inherit]: true
      });
    },
    get C12() {
      return C[12] = dart.const({
        __proto__: text_span.TextSpan.prototype,
        [InlineSpan_style]: C[13] || CT.C13,
        [TextSpan_semanticsLabel]: null,
        [TextSpan_recognizer]: null,
        [TextSpan_children]: null,
        [TextSpan_text]: "✂"
      });
    },
    get C15() {
      return C[15] = dart.const({
        __proto__: ui.Radius.prototype,
        [Radius_y]: 0,
        [Radius_x]: 0
      });
    },
    get C14() {
      return C[14] = dart.const({
        __proto__: border_radius.BorderRadius.prototype,
        [BorderRadius_bottomRight]: C[15] || CT.C15,
        [BorderRadius_bottomLeft]: C[15] || CT.C15,
        [BorderRadius_topRight]: C[15] || CT.C15,
        [BorderRadius_topLeft]: C[15] || CT.C15
      });
    },
    get C16() {
      return C[16] = dart.const({
        __proto__: ui.Clip.prototype,
        [_name]: "Clip.none",
        index: 0
      });
    },
    get C17() {
      return C[17] = dart.const({
        __proto__: box_border.BoxShape.prototype,
        [_name$0]: "BoxShape.rectangle",
        index: 0
      });
    },
    get C18() {
      return C[18] = dart.const({
        __proto__: ui.Color.prototype,
        [Color_value]: 4278190080.0
      });
    },
    get C19() {
      return C[19] = dart.const({
        __proto__: box_border.BoxShape.prototype,
        [_name$0]: "BoxShape.circle",
        index: 1
      });
    },
    get C20() {
      return C[20] = dart.const({
        __proto__: proxy_box.DecorationPosition.prototype,
        [_name$]: "DecorationPosition.background",
        index: 0
      });
    },
    get C21() {
      return C[21] = dart.const({
        __proto__: proxy_box.DecorationPosition.prototype,
        [_name$]: "DecorationPosition.foreground",
        index: 1
      });
    },
    get C22() {
      return C[22] = dart.constList([C[20] || CT.C20, C[21] || CT.C21], T$.DecorationPositionL());
    },
    get C23() {
      return C[23] = dart.const({
        __proto__: image_provider.ImageConfiguration.prototype,
        [ImageConfiguration_platform]: null,
        [ImageConfiguration_size]: null,
        [ImageConfiguration_textDirection]: null,
        [ImageConfiguration_locale]: null,
        [ImageConfiguration_devicePixelRatio]: null,
        [ImageConfiguration_bundle]: null
      });
    },
    get C24() {
      return C[24] = dart.const({
        __proto__: box_fit.BoxFit.prototype,
        [_name$1]: "BoxFit.contain",
        index: 1
      });
    },
    get C25() {
      return C[25] = dart.const({
        __proto__: alignment.Alignment.prototype,
        [Alignment_y]: 0,
        [Alignment_x]: 0
      });
    },
    get C26() {
      return C[26] = dart.const({
        __proto__: box_fit.BoxFit.prototype,
        [_name$1]: "BoxFit.scaleDown",
        index: 6
      });
    },
    get C27() {
      return C[27] = dart.const({
        __proto__: box.BoxConstraints.prototype,
        [BoxConstraints_maxHeight]: 1 / 0,
        [BoxConstraints_minHeight]: 0,
        [BoxConstraints_maxWidth]: 1 / 0,
        [BoxConstraints_minWidth]: 0
      });
    },
    get C28() {
      return C[28] = dart.const({
        __proto__: mouse_cursor._DeferringMouseCursor.prototype
      });
    },
    get C29() {
      return C[29] = dart.const({
        __proto__: ui.Offset.prototype,
        [OffsetBase__dy]: 0,
        [OffsetBase__dx]: 0
      });
    },
    get C30() {
      return C[30] = dart.const({
        __proto__: alignment.Alignment.prototype,
        [Alignment_y]: -1,
        [Alignment_x]: -1
      });
    },
    get C31() {
      return C[31] = dart.const({
        __proto__: ui.Rect.prototype,
        [Rect_bottom]: 1 / 0,
        [Rect_right]: 1 / 0,
        [Rect_top]: -1 / 0,
        [Rect_left]: -1 / 0
      });
    }
  }, false);
  var C = Array(32).fill(void 0);
  var I = [
    "file:///C:/Users/Luca/Documents/flutter/flutter_windows_1.22.5-stable/flutter/packages/flutter/lib/src/rendering/proxy_box.dart",
    "package:flutter/src/rendering/proxy_box.dart"
  ];
  const _is_RenderProxyBoxMixin_default = Symbol('_is_RenderProxyBoxMixin_default');
  proxy_box.RenderProxyBoxMixin$ = dart.generic(T => {
    class RenderProxyBoxMixin extends core.Object {}
    RenderProxyBoxMixin[dart.mixinOn] = _RenderProxyBoxMixin$36RenderBox$36RenderObjectWithChildMixin => class RenderProxyBoxMixin extends _RenderProxyBoxMixin$36RenderBox$36RenderObjectWithChildMixin {
      setupParentData(child) {
        object.RenderObject.as(child);
        if (child == null) dart.nullFailed(I[0], 65, 37, "child");
        if (!object.ParentData.is(child.parentData)) child.parentData = new object.ParentData.new();
      }
      computeMinIntrinsicWidth(height) {
        if (height == null) dart.nullFailed(I[0], 73, 42, "height");
        if (this.child != null) return dart.nullCheck(this.child).getMinIntrinsicWidth(height);
        return 0.0;
      }
      computeMaxIntrinsicWidth(height) {
        if (height == null) dart.nullFailed(I[0], 80, 42, "height");
        if (this.child != null) return dart.nullCheck(this.child).getMaxIntrinsicWidth(height);
        return 0.0;
      }
      computeMinIntrinsicHeight(width) {
        if (width == null) dart.nullFailed(I[0], 87, 43, "width");
        if (this.child != null) return dart.nullCheck(this.child).getMinIntrinsicHeight(width);
        return 0.0;
      }
      computeMaxIntrinsicHeight(width) {
        if (width == null) dart.nullFailed(I[0], 94, 43, "width");
        if (this.child != null) return dart.nullCheck(this.child).getMaxIntrinsicHeight(width);
        return 0.0;
      }
      computeDistanceToActualBaseline(baseline) {
        if (baseline == null) dart.nullFailed(I[0], 101, 56, "baseline");
        if (this.child != null) return dart.nullCheck(this.child).getDistanceToActualBaseline(baseline);
        return super.computeDistanceToActualBaseline(baseline);
      }
      computeDryLayout(constraints) {
        if (constraints == null) dart.nullFailed(I[0], 108, 40, "constraints");
        if (this.child != null) {
          return dart.nullCheck(this.child).getDryLayout(constraints);
        }
        return this.computeSizeForNoChild(constraints);
      }
      performLayout() {
        if (this.child != null) {
          dart.nullCheck(this.child).layout(this.constraints, {parentUsesSize: true});
          this.size = dart.nullCheck(this.child).size;
        } else {
          this.size = this.computeSizeForNoChild(this.constraints);
        }
      }
      computeSizeForNoChild(constraints) {
        if (constraints == null) dart.nullFailed(I[0], 127, 45, "constraints");
        return constraints.smallest;
      }
      hitTestChildren(result, opts) {
        let t0, t0$;
        if (result == null) dart.nullFailed(I[0], 132, 41, "result");
        let position = opts && 'position' in opts ? opts.position : null;
        if (position == null) dart.nullFailed(I[0], 132, 67, "position");
        t0$ = (t0 = this.child, t0 == null ? null : t0.hitTest(result, {position: position}));
        return t0$ == null ? false : t0$;
      }
      applyPaintTransform(child, transform) {
        object.RenderObject.as(child);
        if (child == null) dart.nullFailed(I[0], 137, 41, "child");
        if (transform == null) dart.nullFailed(I[0], 137, 56, "transform");
      }
      paint(context, offset) {
        if (context == null) dart.nullFailed(I[0], 140, 30, "context");
        if (offset == null) dart.nullFailed(I[0], 140, 46, "offset");
        if (this.child != null) context.paintChild(dart.nullCheck(this.child), offset);
      }
    };
    dart.addTypeTests(RenderProxyBoxMixin);
    RenderProxyBoxMixin.prototype[_is_RenderProxyBoxMixin_default] = true;
    dart.addTypeCaches(RenderProxyBoxMixin);
    RenderProxyBoxMixin[dart.implements] = () => [object.RenderObjectWithChildMixin$(T), box.RenderBox];
    dart.setMethodSignature(RenderProxyBoxMixin, () => ({
      __proto__: dart.getMethods(RenderProxyBoxMixin.__proto__),
      setupParentData: dart.fnType(dart.void, [dart.nullable(core.Object)]),
      computeMinIntrinsicWidth: dart.fnType(core.double, [core.double]),
      computeMaxIntrinsicWidth: dart.fnType(core.double, [core.double]),
      computeMinIntrinsicHeight: dart.fnType(core.double, [core.double]),
      computeMaxIntrinsicHeight: dart.fnType(core.double, [core.double]),
      computeDistanceToActualBaseline: dart.fnType(dart.nullable(core.double), [ui.TextBaseline]),
      computeDryLayout: dart.fnType(ui.Size, [box.BoxConstraints]),
      performLayout: dart.fnType(dart.void, []),
      computeSizeForNoChild: dart.fnType(ui.Size, [box.BoxConstraints]),
      hitTestChildren: dart.fnType(core.bool, [box.BoxHitTestResult], {}, {position: ui.Offset}),
      applyPaintTransform: dart.fnType(dart.void, [dart.nullable(core.Object), vector_math_64.Matrix4]),
      paint: dart.fnType(dart.void, [object.PaintingContext, ui.Offset])
    }));
    dart.setLibraryUri(RenderProxyBoxMixin, I[1]);
    return RenderProxyBoxMixin;
  });
  proxy_box.RenderProxyBoxMixin = proxy_box.RenderProxyBoxMixin$();
  dart.addTypeTests(proxy_box.RenderProxyBoxMixin, _is_RenderProxyBoxMixin_default);
  const RenderBox_RenderObjectWithChildMixin$36 = class RenderBox_RenderObjectWithChildMixin extends box.RenderBox {};
  (RenderBox_RenderObjectWithChildMixin$36.new = function() {
    object.RenderObjectWithChildMixin$(box.RenderBox)[dart.mixinNew].call(this);
    RenderBox_RenderObjectWithChildMixin$36.__proto__.new.call(this);
  }).prototype = RenderBox_RenderObjectWithChildMixin$36.prototype;
  dart.applyMixin(RenderBox_RenderObjectWithChildMixin$36, object.RenderObjectWithChildMixin$(box.RenderBox));
  const RenderBox_RenderProxyBoxMixin$36 = class RenderBox_RenderProxyBoxMixin extends RenderBox_RenderObjectWithChildMixin$36 {};
  (RenderBox_RenderProxyBoxMixin$36.new = function() {
    RenderBox_RenderProxyBoxMixin$36.__proto__.new.call(this);
  }).prototype = RenderBox_RenderProxyBoxMixin$36.prototype;
  dart.applyMixin(RenderBox_RenderProxyBoxMixin$36, proxy_box.RenderProxyBoxMixin$(box.RenderBox));
  proxy_box.RenderProxyBox = class RenderProxyBox extends RenderBox_RenderProxyBoxMixin$36 {};
  (proxy_box.RenderProxyBox.new = function(child = null) {
    proxy_box.RenderProxyBox.__proto__.new.call(this);
    this.child = child;
  }).prototype = proxy_box.RenderProxyBox.prototype;
  dart.addTypeTests(proxy_box.RenderProxyBox);
  dart.addTypeCaches(proxy_box.RenderProxyBox);
  dart.setLibraryUri(proxy_box.RenderProxyBox, I[1]);
  var _name$ = dart.privateName(proxy_box, "_name");
  proxy_box.HitTestBehavior = class HitTestBehavior extends core.Object {
    toString() {
      return this[_name$];
    }
  };
  (proxy_box.HitTestBehavior.new = function(index, _name) {
    if (index == null) dart.nullFailed(I[0], 147, 6, "index");
    if (_name == null) dart.nullFailed(I[0], 147, 6, "_name");
    this.index = index;
    this[_name$] = _name;
    ;
  }).prototype = proxy_box.HitTestBehavior.prototype;
  dart.addTypeTests(proxy_box.HitTestBehavior);
  dart.addTypeCaches(proxy_box.HitTestBehavior);
  dart.setLibraryUri(proxy_box.HitTestBehavior, I[1]);
  dart.setFieldSignature(proxy_box.HitTestBehavior, () => ({
    __proto__: dart.getFields(proxy_box.HitTestBehavior.__proto__),
    index: dart.finalFieldType(core.int),
    [_name$]: dart.finalFieldType(core.String)
  }));
  dart.defineExtensionMethods(proxy_box.HitTestBehavior, ['toString']);
  proxy_box.HitTestBehavior.deferToChild = C[0] || CT.C0;
  proxy_box.HitTestBehavior.opaque = C[1] || CT.C1;
  proxy_box.HitTestBehavior.translucent = C[2] || CT.C2;
  proxy_box.HitTestBehavior.values = C[3] || CT.C3;
  var behavior$ = dart.privateName(proxy_box, "RenderProxyBoxWithHitTestBehavior.behavior");
  proxy_box.RenderProxyBoxWithHitTestBehavior = class RenderProxyBoxWithHitTestBehavior extends proxy_box.RenderProxyBox {
    get behavior() {
      return this[behavior$];
    }
    set behavior(value) {
      this[behavior$] = value;
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 177, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 177, 59, "position");
      let hitTarget = false;
      if (dart.test(this.size.contains(position))) {
        hitTarget = dart.test(this.hitTestChildren(result, {position: position})) || dart.test(this.hitTestSelf(position));
        if (hitTarget || this.behavior == proxy_box.HitTestBehavior.translucent) result.add(new box.BoxHitTestEntry.new(this, position));
      }
      return hitTarget;
    }
    hitTestSelf(position) {
      if (position == null) dart.nullFailed(I[0], 188, 27, "position");
      return this.behavior == proxy_box.HitTestBehavior.opaque;
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 191, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.EnumPropertyOfHitTestBehavior()).new("behavior", this.behavior, {defaultValue: null}));
    }
  };
  (proxy_box.RenderProxyBoxWithHitTestBehavior.new = function(opts) {
    let behavior = opts && 'behavior' in opts ? opts.behavior : C[0] || CT.C0;
    if (behavior == null) dart.nullFailed(I[0], 169, 10, "behavior");
    let child = opts && 'child' in opts ? opts.child : null;
    this[behavior$] = behavior;
    proxy_box.RenderProxyBoxWithHitTestBehavior.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderProxyBoxWithHitTestBehavior.prototype;
  dart.addTypeTests(proxy_box.RenderProxyBoxWithHitTestBehavior);
  dart.addTypeCaches(proxy_box.RenderProxyBoxWithHitTestBehavior);
  dart.setLibraryUri(proxy_box.RenderProxyBoxWithHitTestBehavior, I[1]);
  dart.setFieldSignature(proxy_box.RenderProxyBoxWithHitTestBehavior, () => ({
    __proto__: dart.getFields(proxy_box.RenderProxyBoxWithHitTestBehavior.__proto__),
    behavior: dart.fieldType(proxy_box.HitTestBehavior)
  }));
  var _additionalConstraints = dart.privateName(proxy_box, "_additionalConstraints");
  var Color_value = dart.privateName(ui, "Color.value");
  proxy_box.RenderConstrainedBox = class RenderConstrainedBox extends proxy_box.RenderProxyBox {
    get additionalConstraints() {
      return this[_additionalConstraints];
    }
    set additionalConstraints(value) {
      if (value == null) dart.nullFailed(I[0], 222, 44, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 223, 12, "value != null");
      if (!dart.test(value.debugAssertIsValid())) dart.assertFailed(null, I[0], 224, 12, "value.debugAssertIsValid()");
      if (dart.equals(this[_additionalConstraints], value)) return;
      this[_additionalConstraints] = value;
      this.markNeedsLayout();
    }
    computeMinIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 232, 42, "height");
      if (dart.test(this[_additionalConstraints].hasBoundedWidth) && dart.test(this[_additionalConstraints].hasTightWidth)) return this[_additionalConstraints].minWidth;
      let width = super.computeMinIntrinsicWidth(height);
      if (!width[$isFinite]) dart.assertFailed(null, I[0], 236, 12, "width.isFinite");
      if (!dart.test(this[_additionalConstraints].hasInfiniteWidth)) return this[_additionalConstraints].constrainWidth(width);
      return width;
    }
    computeMaxIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 243, 42, "height");
      if (dart.test(this[_additionalConstraints].hasBoundedWidth) && dart.test(this[_additionalConstraints].hasTightWidth)) return this[_additionalConstraints].minWidth;
      let width = super.computeMaxIntrinsicWidth(height);
      if (!width[$isFinite]) dart.assertFailed(null, I[0], 247, 12, "width.isFinite");
      if (!dart.test(this[_additionalConstraints].hasInfiniteWidth)) return this[_additionalConstraints].constrainWidth(width);
      return width;
    }
    computeMinIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[0], 254, 43, "width");
      if (dart.test(this[_additionalConstraints].hasBoundedHeight) && dart.test(this[_additionalConstraints].hasTightHeight)) return this[_additionalConstraints].minHeight;
      let height = super.computeMinIntrinsicHeight(width);
      if (!height[$isFinite]) dart.assertFailed(null, I[0], 258, 12, "height.isFinite");
      if (!dart.test(this[_additionalConstraints].hasInfiniteHeight)) return this[_additionalConstraints].constrainHeight(height);
      return height;
    }
    computeMaxIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[0], 265, 43, "width");
      if (dart.test(this[_additionalConstraints].hasBoundedHeight) && dart.test(this[_additionalConstraints].hasTightHeight)) return this[_additionalConstraints].minHeight;
      let height = super.computeMaxIntrinsicHeight(width);
      if (!height[$isFinite]) dart.assertFailed(null, I[0], 269, 12, "height.isFinite");
      if (!dart.test(this[_additionalConstraints].hasInfiniteHeight)) return this[_additionalConstraints].constrainHeight(height);
      return height;
    }
    performLayout() {
      let constraints = this.constraints;
      if (this.child != null) {
        dart.nullCheck(this.child).layout(this[_additionalConstraints].enforce(constraints), {parentUsesSize: true});
        this.size = dart.nullCheck(this.child).size;
      } else {
        this.size = this[_additionalConstraints].enforce(constraints).constrain(ui.Size.zero);
      }
    }
    computeDryLayout(constraints) {
      if (constraints == null) dart.nullFailed(I[0], 287, 40, "constraints");
      if (this.child != null) {
        return dart.nullCheck(this.child).getDryLayout(this[_additionalConstraints].enforce(constraints));
      } else {
        return this[_additionalConstraints].enforce(constraints).constrain(ui.Size.zero);
      }
    }
    debugPaintSize(context, offset) {
      if (context == null) dart.nullFailed(I[0], 296, 39, "context");
      if (offset == null) dart.nullFailed(I[0], 296, 55, "offset");
      super.debugPaintSize(context, offset);
      if (!dart.test(dart.fn(() => {
        let t0;
        let paint = null;
        if (this.child == null || dart.test(dart.nullCheck(this.child).size.isEmpty)) {
          paint = (t0 = ui.Paint.new(), (() => {
            t0.color = C[4] || CT.C4;
            return t0;
          })());
          context.canvas.drawRect(offset['&'](this.size), paint);
        }
        return true;
      }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 298, 12, "() {\r\n      final Paint paint;\r\n      if (child == null || child!.size.isEmpty) {\r\n        paint = Paint()\r\n          ..color = const Color(0x90909090);\r\n        context.canvas.drawRect(offset & size, paint);\r\n      }\r\n      return true;\r\n    }()");
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 310, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfBoxConstraints()).new("additionalConstraints", this.additionalConstraints));
    }
  };
  (proxy_box.RenderConstrainedBox.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let additionalConstraints = opts && 'additionalConstraints' in opts ? opts.additionalConstraints : null;
    if (additionalConstraints == null) dart.nullFailed(I[0], 213, 29, "additionalConstraints");
    if (!(additionalConstraints != null)) dart.assertFailed(null, I[0], 214, 15, "additionalConstraints != null");
    if (!dart.test(additionalConstraints.debugAssertIsValid())) dart.assertFailed(null, I[0], 215, 15, "additionalConstraints.debugAssertIsValid()");
    this[_additionalConstraints] = additionalConstraints;
    proxy_box.RenderConstrainedBox.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderConstrainedBox.prototype;
  dart.addTypeTests(proxy_box.RenderConstrainedBox);
  dart.addTypeCaches(proxy_box.RenderConstrainedBox);
  dart.setGetterSignature(proxy_box.RenderConstrainedBox, () => ({
    __proto__: dart.getGetters(proxy_box.RenderConstrainedBox.__proto__),
    additionalConstraints: box.BoxConstraints
  }));
  dart.setSetterSignature(proxy_box.RenderConstrainedBox, () => ({
    __proto__: dart.getSetters(proxy_box.RenderConstrainedBox.__proto__),
    additionalConstraints: box.BoxConstraints
  }));
  dart.setLibraryUri(proxy_box.RenderConstrainedBox, I[1]);
  dart.setFieldSignature(proxy_box.RenderConstrainedBox, () => ({
    __proto__: dart.getFields(proxy_box.RenderConstrainedBox.__proto__),
    [_additionalConstraints]: dart.fieldType(box.BoxConstraints)
  }));
  var _maxWidth = dart.privateName(proxy_box, "_maxWidth");
  var _maxHeight = dart.privateName(proxy_box, "_maxHeight");
  var _limitConstraints = dart.privateName(proxy_box, "_limitConstraints");
  var _computeSize = dart.privateName(proxy_box, "_computeSize");
  proxy_box.RenderLimitedBox = class RenderLimitedBox extends proxy_box.RenderProxyBox {
    get maxWidth() {
      return this[_maxWidth];
    }
    set maxWidth(value) {
      if (value == null) dart.nullFailed(I[0], 347, 23, "value");
      if (!(value != null && dart.notNull(value) >= 0.0)) dart.assertFailed(null, I[0], 348, 12, "value != null && value >= 0.0");
      if (this[_maxWidth] == value) return;
      this[_maxWidth] = value;
      this.markNeedsLayout();
    }
    get maxHeight() {
      return this[_maxHeight];
    }
    set maxHeight(value) {
      if (value == null) dart.nullFailed(I[0], 358, 24, "value");
      if (!(value != null && dart.notNull(value) >= 0.0)) dart.assertFailed(null, I[0], 359, 12, "value != null && value >= 0.0");
      if (this[_maxHeight] == value) return;
      this[_maxHeight] = value;
      this.markNeedsLayout();
    }
    [_limitConstraints](constraints) {
      if (constraints == null) dart.nullFailed(I[0], 366, 51, "constraints");
      return new box.BoxConstraints.new({minWidth: constraints.minWidth, maxWidth: dart.test(constraints.hasBoundedWidth) ? constraints.maxWidth : constraints.constrainWidth(this.maxWidth), minHeight: constraints.minHeight, maxHeight: dart.test(constraints.hasBoundedHeight) ? constraints.maxHeight : constraints.constrainHeight(this.maxHeight)});
    }
    [_computeSize](opts) {
      let constraints = opts && 'constraints' in opts ? opts.constraints : null;
      if (constraints == null) dart.nullFailed(I[0], 375, 46, "constraints");
      let layoutChild = opts && 'layoutChild' in opts ? opts.layoutChild : null;
      if (layoutChild == null) dart.nullFailed(I[0], 375, 82, "layoutChild");
      if (this.child != null) {
        let childSize = layoutChild(dart.nullCheck(this.child), this[_limitConstraints](constraints));
        return constraints.constrain(childSize);
      }
      return this[_limitConstraints](constraints).constrain(ui.Size.zero);
    }
    computeDryLayout(constraints) {
      if (constraints == null) dart.nullFailed(I[0], 384, 40, "constraints");
      return this[_computeSize]({constraints: constraints, layoutChild: C[5] || CT.C5});
    }
    performLayout() {
      this.size = this[_computeSize]({constraints: this.constraints, layoutChild: C[6] || CT.C6});
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 400, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new diagnostics.DoubleProperty.new("maxWidth", this.maxWidth, {defaultValue: 1 / 0}));
      properties.add(new diagnostics.DoubleProperty.new("maxHeight", this.maxHeight, {defaultValue: 1 / 0}));
    }
  };
  (proxy_box.RenderLimitedBox.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let maxWidth = opts && 'maxWidth' in opts ? opts.maxWidth : 1 / 0;
    if (maxWidth == null) dart.nullFailed(I[0], 336, 12, "maxWidth");
    let maxHeight = opts && 'maxHeight' in opts ? opts.maxHeight : 1 / 0;
    if (maxHeight == null) dart.nullFailed(I[0], 337, 12, "maxHeight");
    if (!(maxWidth != null && dart.notNull(maxWidth) >= 0.0)) dart.assertFailed(null, I[0], 338, 15, "maxWidth != null && maxWidth >= 0.0");
    if (!(maxHeight != null && dart.notNull(maxHeight) >= 0.0)) dart.assertFailed(null, I[0], 339, 15, "maxHeight != null && maxHeight >= 0.0");
    this[_maxWidth] = maxWidth;
    this[_maxHeight] = maxHeight;
    proxy_box.RenderLimitedBox.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderLimitedBox.prototype;
  dart.addTypeTests(proxy_box.RenderLimitedBox);
  dart.addTypeCaches(proxy_box.RenderLimitedBox);
  dart.setMethodSignature(proxy_box.RenderLimitedBox, () => ({
    __proto__: dart.getMethods(proxy_box.RenderLimitedBox.__proto__),
    [_limitConstraints]: dart.fnType(box.BoxConstraints, [box.BoxConstraints]),
    [_computeSize]: dart.fnType(ui.Size, [], {}, {constraints: box.BoxConstraints, layoutChild: dart.fnType(ui.Size, [box.RenderBox, box.BoxConstraints])})
  }));
  dart.setGetterSignature(proxy_box.RenderLimitedBox, () => ({
    __proto__: dart.getGetters(proxy_box.RenderLimitedBox.__proto__),
    maxWidth: core.double,
    maxHeight: core.double
  }));
  dart.setSetterSignature(proxy_box.RenderLimitedBox, () => ({
    __proto__: dart.getSetters(proxy_box.RenderLimitedBox.__proto__),
    maxWidth: core.double,
    maxHeight: core.double
  }));
  dart.setLibraryUri(proxy_box.RenderLimitedBox, I[1]);
  dart.setFieldSignature(proxy_box.RenderLimitedBox, () => ({
    __proto__: dart.getFields(proxy_box.RenderLimitedBox.__proto__),
    [_maxWidth]: dart.fieldType(core.double),
    [_maxHeight]: dart.fieldType(core.double)
  }));
  var _aspectRatio = dart.privateName(proxy_box, "_aspectRatio");
  var _applyAspectRatio = dart.privateName(proxy_box, "_applyAspectRatio");
  proxy_box.RenderAspectRatio = class RenderAspectRatio extends proxy_box.RenderProxyBox {
    get aspectRatio() {
      return this[_aspectRatio];
    }
    set aspectRatio(value) {
      if (value == null) dart.nullFailed(I[0], 452, 26, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 453, 12, "value != null");
      if (!(dart.notNull(value) > 0.0)) dart.assertFailed(null, I[0], 454, 12, "value > 0.0");
      if (!value[$isFinite]) dart.assertFailed(null, I[0], 455, 12, "value.isFinite");
      if (this[_aspectRatio] == value) return;
      this[_aspectRatio] = value;
      this.markNeedsLayout();
    }
    computeMinIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 463, 42, "height");
      if (height[$isFinite]) return dart.notNull(height) * dart.notNull(this[_aspectRatio]);
      if (this.child != null) return dart.nullCheck(this.child).getMinIntrinsicWidth(height);
      return 0.0;
    }
    computeMaxIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 472, 42, "height");
      if (height[$isFinite]) return dart.notNull(height) * dart.notNull(this[_aspectRatio]);
      if (this.child != null) return dart.nullCheck(this.child).getMaxIntrinsicWidth(height);
      return 0.0;
    }
    computeMinIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[0], 481, 43, "width");
      if (width[$isFinite]) return dart.notNull(width) / dart.notNull(this[_aspectRatio]);
      if (this.child != null) return dart.nullCheck(this.child).getMinIntrinsicHeight(width);
      return 0.0;
    }
    computeMaxIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[0], 490, 43, "width");
      if (width[$isFinite]) return dart.notNull(width) / dart.notNull(this[_aspectRatio]);
      if (this.child != null) return dart.nullCheck(this.child).getMaxIntrinsicHeight(width);
      return 0.0;
    }
    [_applyAspectRatio](constraints) {
      if (constraints == null) dart.nullFailed(I[0], 498, 41, "constraints");
      if (!dart.test(constraints.debugAssertIsValid())) dart.assertFailed(null, I[0], 499, 12, "constraints.debugAssertIsValid()");
      if (!dart.test(dart.fn(() => {
        if (!dart.test(constraints.hasBoundedWidth) && !dart.test(constraints.hasBoundedHeight)) {
          dart.throw(assertions.FlutterError.new(dart.str(this[$runtimeType]) + " has unbounded constraints.\n" + "This " + dart.str(this[$runtimeType]) + " was given an aspect ratio of " + dart.str(this.aspectRatio) + " but was given " + "both unbounded width and unbounded height constraints. Because both " + "constraints were unbounded, this render object doesn't know how much " + "size to consume."));
        }
        return true;
      }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 500, 12, "() {\r\n      if (!constraints.hasBoundedWidth && !constraints.hasBoundedHeight) {\r\n        throw FlutterError(\r\n          '$runtimeType has unbounded constraints.\\n'\r\n          'This $runtimeType was given an aspect ratio of $aspectRatio but was given '\r\n          'both unbounded width and unbounded height constraints. Because both '\r\n          'constraints were unbounded, this render object doesn\\'t know how much '\r\n          'size to consume.'\r\n        );\r\n      }\r\n      return true;\r\n    }()");
      if (dart.test(constraints.isTight)) return constraints.smallest;
      let width = constraints.maxWidth;
      let height = null;
      if (width[$isFinite]) {
        height = dart.notNull(width) / dart.notNull(this[_aspectRatio]);
      } else {
        height = constraints.maxHeight;
        width = dart.notNull(height) * dart.notNull(this[_aspectRatio]);
      }
      if (dart.notNull(width) > dart.notNull(constraints.maxWidth)) {
        width = constraints.maxWidth;
        height = dart.notNull(width) / dart.notNull(this[_aspectRatio]);
      }
      if (dart.notNull(height) > dart.notNull(constraints.maxHeight)) {
        height = constraints.maxHeight;
        width = dart.notNull(height) * dart.notNull(this[_aspectRatio]);
      }
      if (dart.notNull(width) < dart.notNull(constraints.minWidth)) {
        width = constraints.minWidth;
        height = dart.notNull(width) / dart.notNull(this[_aspectRatio]);
      }
      if (dart.notNull(height) < dart.notNull(constraints.minHeight)) {
        height = constraints.minHeight;
        width = dart.notNull(height) * dart.notNull(this[_aspectRatio]);
      }
      return constraints.constrain(new ui.Size.new(width, height));
    }
    computeDryLayout(constraints) {
      if (constraints == null) dart.nullFailed(I[0], 558, 40, "constraints");
      return this[_applyAspectRatio](constraints);
    }
    performLayout() {
      this.size = this.computeDryLayout(this.constraints);
      if (this.child != null) dart.nullCheck(this.child).layout(new box.BoxConstraints.tight(this.size));
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 570, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new diagnostics.DoubleProperty.new("aspectRatio", this.aspectRatio));
    }
  };
  (proxy_box.RenderAspectRatio.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let aspectRatio = opts && 'aspectRatio' in opts ? opts.aspectRatio : null;
    if (aspectRatio == null) dart.nullFailed(I[0], 439, 21, "aspectRatio");
    if (!(aspectRatio != null)) dart.assertFailed(null, I[0], 440, 15, "aspectRatio != null");
    if (!(dart.notNull(aspectRatio) > 0.0)) dart.assertFailed(null, I[0], 441, 15, "aspectRatio > 0.0");
    if (!aspectRatio[$isFinite]) dart.assertFailed(null, I[0], 442, 15, "aspectRatio.isFinite");
    this[_aspectRatio] = aspectRatio;
    proxy_box.RenderAspectRatio.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderAspectRatio.prototype;
  dart.addTypeTests(proxy_box.RenderAspectRatio);
  dart.addTypeCaches(proxy_box.RenderAspectRatio);
  dart.setMethodSignature(proxy_box.RenderAspectRatio, () => ({
    __proto__: dart.getMethods(proxy_box.RenderAspectRatio.__proto__),
    [_applyAspectRatio]: dart.fnType(ui.Size, [box.BoxConstraints])
  }));
  dart.setGetterSignature(proxy_box.RenderAspectRatio, () => ({
    __proto__: dart.getGetters(proxy_box.RenderAspectRatio.__proto__),
    aspectRatio: core.double
  }));
  dart.setSetterSignature(proxy_box.RenderAspectRatio, () => ({
    __proto__: dart.getSetters(proxy_box.RenderAspectRatio.__proto__),
    aspectRatio: core.double
  }));
  dart.setLibraryUri(proxy_box.RenderAspectRatio, I[1]);
  dart.setFieldSignature(proxy_box.RenderAspectRatio, () => ({
    __proto__: dart.getFields(proxy_box.RenderAspectRatio.__proto__),
    [_aspectRatio]: dart.fieldType(core.double)
  }));
  var _stepWidth = dart.privateName(proxy_box, "_stepWidth");
  var _stepHeight = dart.privateName(proxy_box, "_stepHeight");
  proxy_box.RenderIntrinsicWidth = class RenderIntrinsicWidth extends proxy_box.RenderProxyBox {
    get stepWidth() {
      return this[_stepWidth];
    }
    set stepWidth(value) {
      if (!(value == null || dart.notNull(value) > 0.0)) dart.assertFailed(null, I[0], 629, 12, "value == null || value > 0.0");
      if (value == this[_stepWidth]) return;
      this[_stepWidth] = value;
      this.markNeedsLayout();
    }
    get stepHeight() {
      return this[_stepHeight];
    }
    set stepHeight(value) {
      if (!(value == null || dart.notNull(value) > 0.0)) dart.assertFailed(null, I[0], 642, 12, "value == null || value > 0.0");
      if (value == this[_stepHeight]) return;
      this[_stepHeight] = value;
      this.markNeedsLayout();
    }
    static _applyStep(input, step) {
      if (input == null) dart.nullFailed(I[0], 649, 35, "input");
      if (!input[$isFinite]) dart.assertFailed(null, I[0], 650, 12, "input.isFinite");
      if (step == null) return input;
      return (dart.notNull(input) / dart.notNull(step))[$ceil]() * dart.notNull(step);
    }
    computeMinIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 657, 42, "height");
      return this.computeMaxIntrinsicWidth(height);
    }
    computeMaxIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 662, 42, "height");
      if (this.child == null) return 0.0;
      let width = dart.nullCheck(this.child).getMaxIntrinsicWidth(height);
      return proxy_box.RenderIntrinsicWidth._applyStep(width, this[_stepWidth]);
    }
    computeMinIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[0], 670, 43, "width");
      if (this.child == null) return 0.0;
      if (!width[$isFinite]) width = this.computeMaxIntrinsicWidth(1 / 0);
      if (!width[$isFinite]) dart.assertFailed(null, I[0], 675, 12, "width.isFinite");
      let height = dart.nullCheck(this.child).getMinIntrinsicHeight(width);
      return proxy_box.RenderIntrinsicWidth._applyStep(height, this[_stepHeight]);
    }
    computeMaxIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[0], 681, 43, "width");
      if (this.child == null) return 0.0;
      if (!width[$isFinite]) width = this.computeMaxIntrinsicWidth(1 / 0);
      if (!width[$isFinite]) dart.assertFailed(null, I[0], 686, 12, "width.isFinite");
      let height = dart.nullCheck(this.child).getMaxIntrinsicHeight(width);
      return proxy_box.RenderIntrinsicWidth._applyStep(height, this[_stepHeight]);
    }
    [_computeSize](opts) {
      let layoutChild = opts && 'layoutChild' in opts ? opts.layoutChild : null;
      if (layoutChild == null) dart.nullFailed(I[0], 691, 45, "layoutChild");
      let constraints = opts && 'constraints' in opts ? opts.constraints : null;
      if (constraints == null) dart.nullFailed(I[0], 691, 82, "constraints");
      if (this.child != null) {
        if (!dart.test(constraints.hasTightWidth)) {
          let width = dart.nullCheck(this.child).getMaxIntrinsicWidth(constraints.maxHeight);
          if (!width[$isFinite]) dart.assertFailed(null, I[0], 695, 16, "width.isFinite");
          constraints = constraints.tighten({width: proxy_box.RenderIntrinsicWidth._applyStep(width, this[_stepWidth])});
        }
        if (this[_stepHeight] != null) {
          let height = dart.nullCheck(this.child).getMaxIntrinsicHeight(constraints.maxWidth);
          if (!height[$isFinite]) dart.assertFailed(null, I[0], 700, 16, "height.isFinite");
          constraints = constraints.tighten({height: proxy_box.RenderIntrinsicWidth._applyStep(height, this[_stepHeight])});
        }
        return layoutChild(dart.nullCheck(this.child), constraints);
      } else {
        return constraints.smallest;
      }
    }
    computeDryLayout(constraints) {
      if (constraints == null) dart.nullFailed(I[0], 710, 40, "constraints");
      return this[_computeSize]({layoutChild: C[5] || CT.C5, constraints: constraints});
    }
    performLayout() {
      this.size = this[_computeSize]({layoutChild: C[6] || CT.C6, constraints: this.constraints});
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 726, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new diagnostics.DoubleProperty.new("stepWidth", this.stepWidth));
      properties.add(new diagnostics.DoubleProperty.new("stepHeight", this.stepHeight));
    }
  };
  (proxy_box.RenderIntrinsicWidth.new = function(opts) {
    let stepWidth = opts && 'stepWidth' in opts ? opts.stepWidth : null;
    let stepHeight = opts && 'stepHeight' in opts ? opts.stepHeight : null;
    let child = opts && 'child' in opts ? opts.child : null;
    if (!(stepWidth == null || dart.notNull(stepWidth) > 0.0)) dart.assertFailed(null, I[0], 617, 15, "stepWidth == null || stepWidth > 0.0");
    if (!(stepHeight == null || dart.notNull(stepHeight) > 0.0)) dart.assertFailed(null, I[0], 618, 15, "stepHeight == null || stepHeight > 0.0");
    this[_stepWidth] = stepWidth;
    this[_stepHeight] = stepHeight;
    proxy_box.RenderIntrinsicWidth.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderIntrinsicWidth.prototype;
  dart.addTypeTests(proxy_box.RenderIntrinsicWidth);
  dart.addTypeCaches(proxy_box.RenderIntrinsicWidth);
  dart.setMethodSignature(proxy_box.RenderIntrinsicWidth, () => ({
    __proto__: dart.getMethods(proxy_box.RenderIntrinsicWidth.__proto__),
    [_computeSize]: dart.fnType(ui.Size, [], {}, {constraints: box.BoxConstraints, layoutChild: dart.fnType(ui.Size, [box.RenderBox, box.BoxConstraints])})
  }));
  dart.setGetterSignature(proxy_box.RenderIntrinsicWidth, () => ({
    __proto__: dart.getGetters(proxy_box.RenderIntrinsicWidth.__proto__),
    stepWidth: dart.nullable(core.double),
    stepHeight: dart.nullable(core.double)
  }));
  dart.setSetterSignature(proxy_box.RenderIntrinsicWidth, () => ({
    __proto__: dart.getSetters(proxy_box.RenderIntrinsicWidth.__proto__),
    stepWidth: dart.nullable(core.double),
    stepHeight: dart.nullable(core.double)
  }));
  dart.setLibraryUri(proxy_box.RenderIntrinsicWidth, I[1]);
  dart.setFieldSignature(proxy_box.RenderIntrinsicWidth, () => ({
    __proto__: dart.getFields(proxy_box.RenderIntrinsicWidth.__proto__),
    [_stepWidth]: dart.fieldType(dart.nullable(core.double)),
    [_stepHeight]: dart.fieldType(dart.nullable(core.double))
  }));
  proxy_box.RenderIntrinsicHeight = class RenderIntrinsicHeight extends proxy_box.RenderProxyBox {
    computeMinIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 768, 42, "height");
      if (this.child == null) return 0.0;
      if (!height[$isFinite]) height = dart.nullCheck(this.child).getMaxIntrinsicHeight(1 / 0);
      if (!height[$isFinite]) dart.assertFailed(null, I[0], 773, 12, "height.isFinite");
      return dart.nullCheck(this.child).getMinIntrinsicWidth(height);
    }
    computeMaxIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 778, 42, "height");
      if (this.child == null) return 0.0;
      if (!height[$isFinite]) height = dart.nullCheck(this.child).getMaxIntrinsicHeight(1 / 0);
      if (!height[$isFinite]) dart.assertFailed(null, I[0], 783, 12, "height.isFinite");
      return dart.nullCheck(this.child).getMaxIntrinsicWidth(height);
    }
    computeMinIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[0], 788, 43, "width");
      return this.computeMaxIntrinsicHeight(width);
    }
    [_computeSize](opts) {
      let layoutChild = opts && 'layoutChild' in opts ? opts.layoutChild : null;
      if (layoutChild == null) dart.nullFailed(I[0], 792, 45, "layoutChild");
      let constraints = opts && 'constraints' in opts ? opts.constraints : null;
      if (constraints == null) dart.nullFailed(I[0], 792, 82, "constraints");
      if (this.child != null) {
        if (!dart.test(constraints.hasTightHeight)) {
          let height = dart.nullCheck(this.child).getMaxIntrinsicHeight(constraints.maxWidth);
          if (!height[$isFinite]) dart.assertFailed(null, I[0], 796, 16, "height.isFinite");
          constraints = constraints.tighten({height: height});
        }
        return layoutChild(dart.nullCheck(this.child), constraints);
      } else {
        return constraints.smallest;
      }
    }
    computeDryLayout(constraints) {
      if (constraints == null) dart.nullFailed(I[0], 806, 40, "constraints");
      return this[_computeSize]({layoutChild: C[5] || CT.C5, constraints: constraints});
    }
    performLayout() {
      this.size = this[_computeSize]({layoutChild: C[6] || CT.C6, constraints: this.constraints});
    }
  };
  (proxy_box.RenderIntrinsicHeight.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    proxy_box.RenderIntrinsicHeight.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderIntrinsicHeight.prototype;
  dart.addTypeTests(proxy_box.RenderIntrinsicHeight);
  dart.addTypeCaches(proxy_box.RenderIntrinsicHeight);
  dart.setMethodSignature(proxy_box.RenderIntrinsicHeight, () => ({
    __proto__: dart.getMethods(proxy_box.RenderIntrinsicHeight.__proto__),
    [_computeSize]: dart.fnType(ui.Size, [], {}, {constraints: box.BoxConstraints, layoutChild: dart.fnType(ui.Size, [box.RenderBox, box.BoxConstraints])})
  }));
  dart.setLibraryUri(proxy_box.RenderIntrinsicHeight, I[1]);
  var _opacity = dart.privateName(proxy_box, "_opacity");
  var _alwaysIncludeSemantics = dart.privateName(proxy_box, "_alwaysIncludeSemantics");
  var _alpha = dart.privateName(proxy_box, "_alpha");
  proxy_box.RenderOpacity = class RenderOpacity extends proxy_box.RenderProxyBox {
    get alwaysNeedsCompositing() {
      return this.child != null && this[_alpha] !== 0 && this[_alpha] !== 255;
    }
    get opacity() {
      return this[_opacity];
    }
    set opacity(value) {
      if (value == null) dart.nullFailed(I[0], 864, 22, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 865, 12, "value != null");
      if (!(dart.notNull(value) >= 0.0 && dart.notNull(value) <= 1.0)) dart.assertFailed(null, I[0], 866, 12, "value >= 0.0 && value <= 1.0");
      if (this[_opacity] == value) return;
      let didNeedCompositing = this.alwaysNeedsCompositing;
      let wasVisible = this[_alpha] !== 0;
      this[_opacity] = value;
      this[_alpha] = ui.Color.getAlphaFromOpacity(this[_opacity]);
      if (didNeedCompositing != this.alwaysNeedsCompositing) this.markNeedsCompositingBitsUpdate();
      this.markNeedsPaint();
      if (wasVisible !== (this[_alpha] !== 0) && !dart.test(this.alwaysIncludeSemantics)) this.markNeedsSemanticsUpdate();
    }
    get alwaysIncludeSemantics() {
      return this[_alwaysIncludeSemantics];
    }
    set alwaysIncludeSemantics(value) {
      if (value == null) dart.nullFailed(I[0], 887, 35, "value");
      if (value == this[_alwaysIncludeSemantics]) return;
      this[_alwaysIncludeSemantics] = value;
      this.markNeedsSemanticsUpdate();
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 895, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 895, 46, "offset");
      if (this.child != null) {
        if (this[_alpha] === 0) {
          this.layer = null;
          return;
        }
        if (this[_alpha] === 255) {
          this.layer = null;
          context.paintChild(dart.nullCheck(this.child), offset);
          return;
        }
        if (!dart.test(this.needsCompositing)) dart.assertFailed(null, I[0], 908, 14, "needsCompositing");
        this.layer = context.pushOpacity(offset, this[_alpha], dart.bind(this, 'paint', super.paint), {oldLayer: T$.OpacityLayerN().as(this.layer)});
      }
    }
    visitChildrenForSemantics(visitor) {
      if (visitor == null) dart.nullFailed(I[0], 914, 54, "visitor");
      if (this.child != null && (this[_alpha] !== 0 || dart.test(this.alwaysIncludeSemantics))) visitor(dart.nullCheck(this.child));
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 920, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new diagnostics.DoubleProperty.new("opacity", this.opacity));
      properties.add(new diagnostics.FlagProperty.new("alwaysIncludeSemantics", {value: this.alwaysIncludeSemantics, ifTrue: "alwaysIncludeSemantics"}));
    }
  };
  (proxy_box.RenderOpacity.new = function(opts) {
    let opacity = opts && 'opacity' in opts ? opts.opacity : 1;
    if (opacity == null) dart.nullFailed(I[0], 836, 12, "opacity");
    let alwaysIncludeSemantics = opts && 'alwaysIncludeSemantics' in opts ? opts.alwaysIncludeSemantics : false;
    if (alwaysIncludeSemantics == null) dart.nullFailed(I[0], 837, 10, "alwaysIncludeSemantics");
    let child = opts && 'child' in opts ? opts.child : null;
    if (!(opacity != null)) dart.assertFailed(null, I[0], 839, 15, "opacity != null");
    if (!(dart.notNull(opacity) >= 0.0 && dart.notNull(opacity) <= 1.0)) dart.assertFailed(null, I[0], 840, 15, "opacity >= 0.0 && opacity <= 1.0");
    if (!(alwaysIncludeSemantics != null)) dart.assertFailed(null, I[0], 841, 15, "alwaysIncludeSemantics != null");
    this[_opacity] = opacity;
    this[_alwaysIncludeSemantics] = alwaysIncludeSemantics;
    this[_alpha] = ui.Color.getAlphaFromOpacity(opacity);
    proxy_box.RenderOpacity.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderOpacity.prototype;
  dart.addTypeTests(proxy_box.RenderOpacity);
  dart.addTypeCaches(proxy_box.RenderOpacity);
  dart.setGetterSignature(proxy_box.RenderOpacity, () => ({
    __proto__: dart.getGetters(proxy_box.RenderOpacity.__proto__),
    opacity: core.double,
    alwaysIncludeSemantics: core.bool
  }));
  dart.setSetterSignature(proxy_box.RenderOpacity, () => ({
    __proto__: dart.getSetters(proxy_box.RenderOpacity.__proto__),
    opacity: core.double,
    alwaysIncludeSemantics: core.bool
  }));
  dart.setLibraryUri(proxy_box.RenderOpacity, I[1]);
  dart.setFieldSignature(proxy_box.RenderOpacity, () => ({
    __proto__: dart.getFields(proxy_box.RenderOpacity.__proto__),
    [_alpha]: dart.fieldType(core.int),
    [_opacity]: dart.fieldType(core.double),
    [_alwaysIncludeSemantics]: dart.fieldType(core.bool)
  }));
  var _alpha$ = dart.privateName(proxy_box, "RenderAnimatedOpacityMixin._alpha");
  var _currentlyNeedsCompositing = dart.privateName(proxy_box, "RenderAnimatedOpacityMixin._currentlyNeedsCompositing");
  var _opacity$ = dart.privateName(proxy_box, "RenderAnimatedOpacityMixin._opacity");
  var _alwaysIncludeSemantics$ = dart.privateName(proxy_box, "RenderAnimatedOpacityMixin._alwaysIncludeSemantics");
  var _currentlyNeedsCompositing$ = dart.privateName(proxy_box, "_currentlyNeedsCompositing");
  var _updateOpacity = dart.privateName(proxy_box, "_updateOpacity");
  const _is_RenderAnimatedOpacityMixin_default = Symbol('_is_RenderAnimatedOpacityMixin_default');
  proxy_box.RenderAnimatedOpacityMixin$ = dart.generic(T => {
    class RenderAnimatedOpacityMixin extends object.RenderObjectWithChildMixin$(T) {}
    RenderAnimatedOpacityMixin[dart.mixinOn] = RenderObjectWithChildMixin => class RenderAnimatedOpacityMixin extends RenderObjectWithChildMixin {
      get [_alpha]() {
        return this[_alpha$];
      }
      set [_alpha](value) {
        this[_alpha$] = value;
      }
      get [_currentlyNeedsCompositing$]() {
        return this[_currentlyNeedsCompositing];
      }
      set [_currentlyNeedsCompositing$](value) {
        this[_currentlyNeedsCompositing] = value;
      }
      get [_opacity]() {
        return this[_opacity$];
      }
      set [_opacity](value) {
        this[_opacity$] = value;
      }
      get [_alwaysIncludeSemantics]() {
        return this[_alwaysIncludeSemantics$];
      }
      set [_alwaysIncludeSemantics](value) {
        this[_alwaysIncludeSemantics$] = value;
      }
      get alwaysNeedsCompositing() {
        return this.child != null && dart.nullCheck(this[_currentlyNeedsCompositing$]);
      }
      get opacity() {
        return dart.nullCheck(this[_opacity]);
      }
      set opacity(value) {
        if (value == null) dart.nullFailed(I[0], 951, 33, "value");
        if (!(value != null)) dart.assertFailed(null, I[0], 952, 12, "value != null");
        if (dart.equals(this[_opacity], value)) return;
        if (dart.test(this.attached) && this[_opacity] != null) this.opacity.removeListener(dart.bind(this, _updateOpacity));
        this[_opacity] = value;
        if (dart.test(this.attached)) this.opacity.addListener(dart.bind(this, _updateOpacity));
        this[_updateOpacity]();
      }
      get alwaysIncludeSemantics() {
        return dart.nullCheck(this[_alwaysIncludeSemantics]);
      }
      set alwaysIncludeSemantics(value) {
        if (value == null) dart.nullFailed(I[0], 973, 35, "value");
        if (value == this[_alwaysIncludeSemantics]) return;
        this[_alwaysIncludeSemantics] = value;
        this.markNeedsSemanticsUpdate();
      }
      attach(owner) {
        object.PipelineOwner.as(owner);
        if (owner == null) dart.nullFailed(I[0], 981, 29, "owner");
        super.attach(owner);
        this.opacity.addListener(dart.bind(this, _updateOpacity));
        this[_updateOpacity]();
      }
      detach() {
        this.opacity.removeListener(dart.bind(this, _updateOpacity));
        super.detach();
      }
      [_updateOpacity]() {
        let oldAlpha = this[_alpha];
        this[_alpha] = ui.Color.getAlphaFromOpacity(this.opacity.value);
        if (oldAlpha != this[_alpha]) {
          let didNeedCompositing = this[_currentlyNeedsCompositing$];
          this[_currentlyNeedsCompositing$] = dart.nullCheck(this[_alpha]) > 0 && dart.nullCheck(this[_alpha]) < 255;
          if (this.child != null && didNeedCompositing != this[_currentlyNeedsCompositing$]) this.markNeedsCompositingBitsUpdate();
          this.markNeedsPaint();
          if (oldAlpha === 0 || this[_alpha] === 0) this.markNeedsSemanticsUpdate();
        }
      }
      paint(context, offset) {
        if (context == null) dart.nullFailed(I[0], 1008, 30, "context");
        if (offset == null) dart.nullFailed(I[0], 1008, 46, "offset");
        if (this.child != null) {
          if (this[_alpha] === 0) {
            this.layer = null;
            return;
          }
          if (this[_alpha] === 255) {
            this.layer = null;
            context.paintChild(dart.nullCheck(this.child), offset);
            return;
          }
          if (!dart.test(this.needsCompositing)) dart.assertFailed(null, I[0], 1021, 14, "needsCompositing");
          this.layer = context.pushOpacity(offset, dart.nullCheck(this[_alpha]), dart.bind(this, 'paint', super.paint), {oldLayer: T$.OpacityLayerN().as(this.layer)});
        }
      }
      visitChildrenForSemantics(visitor) {
        if (visitor == null) dart.nullFailed(I[0], 1027, 54, "visitor");
        if (this.child != null && (this[_alpha] !== 0 || dart.test(this.alwaysIncludeSemantics))) visitor(dart.nullCheck(this.child));
      }
      debugFillProperties(properties) {
        if (properties == null) dart.nullFailed(I[0], 1033, 56, "properties");
        super.debugFillProperties(properties);
        properties.add(new (T$.DiagnosticsPropertyOfAnimationOfdouble()).new("opacity", this.opacity));
        properties.add(new diagnostics.FlagProperty.new("alwaysIncludeSemantics", {value: this.alwaysIncludeSemantics, ifTrue: "alwaysIncludeSemantics"}));
      }
    };
    (RenderAnimatedOpacityMixin[dart.mixinNew] = function() {
      this[_alpha$] = null;
      this[_currentlyNeedsCompositing] = null;
      this[_opacity$] = null;
      this[_alwaysIncludeSemantics$] = null;
    }).prototype = RenderAnimatedOpacityMixin.prototype;
    dart.addTypeTests(RenderAnimatedOpacityMixin);
    RenderAnimatedOpacityMixin.prototype[_is_RenderAnimatedOpacityMixin_default] = true;
    dart.addTypeCaches(RenderAnimatedOpacityMixin);
    RenderAnimatedOpacityMixin[dart.implements] = () => [object.RenderObjectWithChildMixin$(T)];
    dart.setMethodSignature(RenderAnimatedOpacityMixin, () => ({
      __proto__: dart.getMethods(RenderAnimatedOpacityMixin.__proto__),
      [_updateOpacity]: dart.fnType(dart.void, [])
    }));
    dart.setGetterSignature(RenderAnimatedOpacityMixin, () => ({
      __proto__: dart.getGetters(RenderAnimatedOpacityMixin.__proto__),
      opacity: animation.Animation$(core.double),
      alwaysIncludeSemantics: core.bool
    }));
    dart.setSetterSignature(RenderAnimatedOpacityMixin, () => ({
      __proto__: dart.getSetters(RenderAnimatedOpacityMixin.__proto__),
      opacity: animation.Animation$(core.double),
      alwaysIncludeSemantics: core.bool
    }));
    dart.setLibraryUri(RenderAnimatedOpacityMixin, I[1]);
    dart.setFieldSignature(RenderAnimatedOpacityMixin, () => ({
      __proto__: dart.getFields(RenderAnimatedOpacityMixin.__proto__),
      [_alpha]: dart.fieldType(dart.nullable(core.int)),
      [_currentlyNeedsCompositing$]: dart.fieldType(dart.nullable(core.bool)),
      [_opacity]: dart.fieldType(dart.nullable(animation.Animation$(core.double))),
      [_alwaysIncludeSemantics]: dart.fieldType(dart.nullable(core.bool))
    }));
    return RenderAnimatedOpacityMixin;
  });
  proxy_box.RenderAnimatedOpacityMixin = proxy_box.RenderAnimatedOpacityMixin$();
  dart.addTypeTests(proxy_box.RenderAnimatedOpacityMixin, _is_RenderAnimatedOpacityMixin_default);
  const RenderProxyBox_RenderProxyBoxMixin$36 = class RenderProxyBox_RenderProxyBoxMixin extends proxy_box.RenderProxyBox {};
  (RenderProxyBox_RenderProxyBoxMixin$36.new = function(child) {
    RenderProxyBox_RenderProxyBoxMixin$36.__proto__.new.call(this, child);
  }).prototype = RenderProxyBox_RenderProxyBoxMixin$36.prototype;
  dart.applyMixin(RenderProxyBox_RenderProxyBoxMixin$36, proxy_box.RenderProxyBoxMixin$(box.RenderBox));
  const RenderProxyBox_RenderAnimatedOpacityMixin$36 = class RenderProxyBox_RenderAnimatedOpacityMixin extends RenderProxyBox_RenderProxyBoxMixin$36 {};
  (RenderProxyBox_RenderAnimatedOpacityMixin$36.new = function(child) {
    proxy_box.RenderAnimatedOpacityMixin$(box.RenderBox)[dart.mixinNew].call(this);
    RenderProxyBox_RenderAnimatedOpacityMixin$36.__proto__.new.call(this, child);
  }).prototype = RenderProxyBox_RenderAnimatedOpacityMixin$36.prototype;
  dart.applyMixin(RenderProxyBox_RenderAnimatedOpacityMixin$36, proxy_box.RenderAnimatedOpacityMixin$(box.RenderBox));
  proxy_box.RenderAnimatedOpacity = class RenderAnimatedOpacity extends RenderProxyBox_RenderAnimatedOpacityMixin$36 {};
  (proxy_box.RenderAnimatedOpacity.new = function(opts) {
    let opacity = opts && 'opacity' in opts ? opts.opacity : null;
    if (opacity == null) dart.nullFailed(I[0], 1049, 32, "opacity");
    let alwaysIncludeSemantics = opts && 'alwaysIncludeSemantics' in opts ? opts.alwaysIncludeSemantics : false;
    if (alwaysIncludeSemantics == null) dart.nullFailed(I[0], 1050, 10, "alwaysIncludeSemantics");
    let child = opts && 'child' in opts ? opts.child : null;
    if (!(opacity != null)) dart.assertFailed(null, I[0], 1052, 15, "opacity != null");
    if (!(alwaysIncludeSemantics != null)) dart.assertFailed(null, I[0], 1053, 15, "alwaysIncludeSemantics != null");
    proxy_box.RenderAnimatedOpacity.__proto__.new.call(this, child);
    this.opacity = opacity;
    this.alwaysIncludeSemantics = alwaysIncludeSemantics;
  }).prototype = proxy_box.RenderAnimatedOpacity.prototype;
  dart.addTypeTests(proxy_box.RenderAnimatedOpacity);
  dart.addTypeCaches(proxy_box.RenderAnimatedOpacity);
  dart.setLibraryUri(proxy_box.RenderAnimatedOpacity, I[1]);
  var _name = dart.privateName(ui, "_name");
  var _shaderCallback = dart.privateName(proxy_box, "_shaderCallback");
  var _blendMode = dart.privateName(proxy_box, "_blendMode");
  proxy_box.RenderShaderMask = class RenderShaderMask extends proxy_box.RenderProxyBox {
    get layer() {
      return T$.ShaderMaskLayerN().as(super.layer);
    }
    set layer(value) {
      super.layer = value;
    }
    get shaderCallback() {
      return this[_shaderCallback];
    }
    set shaderCallback(value) {
      if (value == null) dart.nullFailed(I[0], 1097, 37, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 1098, 12, "value != null");
      if (dart.equals(this[_shaderCallback], value)) return;
      this[_shaderCallback] = value;
      this.markNeedsPaint();
    }
    get blendMode() {
      return this[_blendMode];
    }
    set blendMode(value) {
      if (value == null) dart.nullFailed(I[0], 1111, 27, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 1112, 12, "value != null");
      if (this[_blendMode] == value) return;
      this[_blendMode] = value;
      this.markNeedsPaint();
    }
    get alwaysNeedsCompositing() {
      return this.child != null;
    }
    paint(context, offset) {
      let t1, t0;
      if (context == null) dart.nullFailed(I[0], 1123, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 1123, 46, "offset");
      if (this.child != null) {
        if (!dart.test(this.needsCompositing)) dart.assertFailed(null, I[0], 1125, 14, "needsCompositing");
        this.layer == null ? this.layer = new layer.ShaderMaskLayer.new() : null;
        t0 = dart.nullCheck(this.layer);
        (() => {
          t0.shader = (t1 = ui.Offset.zero['&'](this.size), this[_shaderCallback](t1));
          t0.maskRect = offset['&'](this.size);
          t0.blendMode = this[_blendMode];
          return t0;
        })();
        context.pushLayer(dart.nullCheck(this.layer), dart.bind(this, 'paint', super.paint), offset);
      } else {
        this.layer = null;
      }
    }
  };
  (proxy_box.RenderShaderMask.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let shaderCallback = opts && 'shaderCallback' in opts ? opts.shaderCallback : null;
    if (shaderCallback == null) dart.nullFailed(I[0], 1075, 29, "shaderCallback");
    let blendMode = opts && 'blendMode' in opts ? opts.blendMode : C[7] || CT.C7;
    if (blendMode == null) dart.nullFailed(I[0], 1076, 15, "blendMode");
    if (!(shaderCallback != null)) dart.assertFailed(null, I[0], 1077, 15, "shaderCallback != null");
    if (!(blendMode != null)) dart.assertFailed(null, I[0], 1078, 15, "blendMode != null");
    this[_shaderCallback] = shaderCallback;
    this[_blendMode] = blendMode;
    proxy_box.RenderShaderMask.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderShaderMask.prototype;
  dart.addTypeTests(proxy_box.RenderShaderMask);
  dart.addTypeCaches(proxy_box.RenderShaderMask);
  dart.setGetterSignature(proxy_box.RenderShaderMask, () => ({
    __proto__: dart.getGetters(proxy_box.RenderShaderMask.__proto__),
    layer: dart.nullable(layer.ShaderMaskLayer),
    shaderCallback: dart.fnType(ui.Shader, [ui.Rect]),
    blendMode: ui.BlendMode
  }));
  dart.setSetterSignature(proxy_box.RenderShaderMask, () => ({
    __proto__: dart.getSetters(proxy_box.RenderShaderMask.__proto__),
    shaderCallback: dart.fnType(ui.Shader, [ui.Rect]),
    blendMode: ui.BlendMode
  }));
  dart.setLibraryUri(proxy_box.RenderShaderMask, I[1]);
  dart.setFieldSignature(proxy_box.RenderShaderMask, () => ({
    __proto__: dart.getFields(proxy_box.RenderShaderMask.__proto__),
    [_shaderCallback]: dart.fieldType(dart.fnType(ui.Shader, [ui.Rect])),
    [_blendMode]: dart.fieldType(ui.BlendMode)
  }));
  var _filter = dart.privateName(proxy_box, "_filter");
  proxy_box.RenderBackdropFilter = class RenderBackdropFilter extends proxy_box.RenderProxyBox {
    get layer() {
      return T$.BackdropFilterLayerN().as(super.layer);
    }
    set layer(value) {
      super.layer = value;
    }
    get filter() {
      return this[_filter];
    }
    set filter(value) {
      if (value == null) dart.nullFailed(I[0], 1161, 29, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 1162, 12, "value != null");
      if (dart.equals(this[_filter], value)) return;
      this[_filter] = value;
      this.markNeedsPaint();
    }
    get alwaysNeedsCompositing() {
      return this.child != null;
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 1173, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 1173, 46, "offset");
      if (this.child != null) {
        if (!dart.test(this.needsCompositing)) dart.assertFailed(null, I[0], 1175, 14, "needsCompositing");
        this.layer == null ? this.layer = new layer.BackdropFilterLayer.new() : null;
        dart.nullCheck(this.layer).filter = this[_filter];
        context.pushLayer(dart.nullCheck(this.layer), dart.bind(this, 'paint', super.paint), offset);
      } else {
        this.layer = null;
      }
    }
  };
  (proxy_box.RenderBackdropFilter.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let filter = opts && 'filter' in opts ? opts.filter : null;
    if (filter == null) dart.nullFailed(I[0], 1146, 68, "filter");
    if (!(filter != null)) dart.assertFailed(null, I[0], 1147, 14, "filter != null");
    this[_filter] = filter;
    proxy_box.RenderBackdropFilter.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderBackdropFilter.prototype;
  dart.addTypeTests(proxy_box.RenderBackdropFilter);
  dart.addTypeCaches(proxy_box.RenderBackdropFilter);
  dart.setGetterSignature(proxy_box.RenderBackdropFilter, () => ({
    __proto__: dart.getGetters(proxy_box.RenderBackdropFilter.__proto__),
    layer: dart.nullable(layer.BackdropFilterLayer),
    filter: ui.ImageFilter
  }));
  dart.setSetterSignature(proxy_box.RenderBackdropFilter, () => ({
    __proto__: dart.getSetters(proxy_box.RenderBackdropFilter.__proto__),
    filter: ui.ImageFilter
  }));
  dart.setLibraryUri(proxy_box.RenderBackdropFilter, I[1]);
  dart.setFieldSignature(proxy_box.RenderBackdropFilter, () => ({
    __proto__: dart.getFields(proxy_box.RenderBackdropFilter.__proto__),
    [_filter]: dart.fieldType(ui.ImageFilter)
  }));
  var _reclip = dart.privateName(proxy_box, "CustomClipper._reclip");
  var _reclip$ = dart.privateName(proxy_box, "_reclip");
  const _is_CustomClipper_default = Symbol('_is_CustomClipper_default');
  proxy_box.CustomClipper$ = dart.generic(T => {
    class CustomClipper extends change_notifier.Listenable {
      get [_reclip$]() {
        return this[_reclip];
      }
      set [_reclip$](value) {
        super[_reclip$] = value;
      }
      addListener(listener) {
        let t0;
        if (listener == null) dart.nullFailed(I[0], 1222, 33, "listener");
        t0 = this[_reclip$];
        return t0 == null ? null : t0.addListener(listener);
      }
      removeListener(listener) {
        let t0;
        if (listener == null) dart.nullFailed(I[0], 1231, 36, "listener");
        t0 = this[_reclip$];
        return t0 == null ? null : t0.removeListener(listener);
      }
      getApproximateClipRect(size) {
        if (size == null) dart.nullFailed(I[0], 1245, 36, "size");
        return ui.Offset.zero['&'](size);
      }
      toString() {
        return object$.objectRuntimeType(this, "CustomClipper");
      }
    }
    (CustomClipper.new = function(opts) {
      let reclip = opts && 'reclip' in opts ? opts.reclip : null;
      this[_reclip] = reclip;
      CustomClipper.__proto__.new.call(this);
      ;
    }).prototype = CustomClipper.prototype;
    dart.addTypeTests(CustomClipper);
    CustomClipper.prototype[_is_CustomClipper_default] = true;
    dart.addTypeCaches(CustomClipper);
    dart.setMethodSignature(CustomClipper, () => ({
      __proto__: dart.getMethods(CustomClipper.__proto__),
      addListener: dart.fnType(dart.void, [dart.fnType(dart.void, [])]),
      removeListener: dart.fnType(dart.void, [dart.fnType(dart.void, [])]),
      getApproximateClipRect: dart.fnType(ui.Rect, [ui.Size])
    }));
    dart.setLibraryUri(CustomClipper, I[1]);
    dart.setFieldSignature(CustomClipper, () => ({
      __proto__: dart.getFields(CustomClipper.__proto__),
      [_reclip$]: dart.finalFieldType(dart.nullable(change_notifier.Listenable))
    }));
    dart.defineExtensionMethods(CustomClipper, ['toString']);
    return CustomClipper;
  });
  proxy_box.CustomClipper = proxy_box.CustomClipper$();
  dart.addTypeTests(proxy_box.CustomClipper, _is_CustomClipper_default);
  var shape$ = dart.privateName(proxy_box, "ShapeBorderClipper.shape");
  var textDirection$ = dart.privateName(proxy_box, "ShapeBorderClipper.textDirection");
  proxy_box.ShapeBorderClipper = class ShapeBorderClipper extends proxy_box.CustomClipper$(ui.Path) {
    get shape() {
      return this[shape$];
    }
    set shape(value) {
      super.shape = value;
    }
    get textDirection() {
      return this[textDirection$];
    }
    set textDirection(value) {
      super.textDirection = value;
    }
    getClip(size) {
      if (size == null) dart.nullFailed(I[0], 1294, 21, "size");
      return this.shape.getOuterPath(ui.Offset.zero['&'](size), {textDirection: this.textDirection});
    }
    shouldReclip(oldClipper) {
      T$.CustomClipperOfPath().as(oldClipper);
      if (oldClipper == null) dart.nullFailed(I[0], 1299, 41, "oldClipper");
      if (!dart.equals(dart.runtimeType(oldClipper), dart.wrapType(proxy_box.ShapeBorderClipper))) return true;
      let typedOldClipper = proxy_box.ShapeBorderClipper.as(oldClipper);
      return !dart.equals(typedOldClipper.shape, this.shape) || typedOldClipper.textDirection != this.textDirection;
    }
  };
  (proxy_box.ShapeBorderClipper.new = function(opts) {
    let shape = opts && 'shape' in opts ? opts.shape : null;
    if (shape == null) dart.nullFailed(I[0], 1279, 19, "shape");
    let textDirection = opts && 'textDirection' in opts ? opts.textDirection : null;
    this[shape$] = shape;
    this[textDirection$] = textDirection;
    if (!(shape != null)) dart.assertFailed(null, I[0], 1281, 15, "shape != null");
    proxy_box.ShapeBorderClipper.__proto__.new.call(this);
    ;
  }).prototype = proxy_box.ShapeBorderClipper.prototype;
  dart.addTypeTests(proxy_box.ShapeBorderClipper);
  dart.addTypeCaches(proxy_box.ShapeBorderClipper);
  dart.setMethodSignature(proxy_box.ShapeBorderClipper, () => ({
    __proto__: dart.getMethods(proxy_box.ShapeBorderClipper.__proto__),
    getClip: dart.fnType(ui.Path, [ui.Size]),
    shouldReclip: dart.fnType(core.bool, [dart.nullable(core.Object)])
  }));
  dart.setLibraryUri(proxy_box.ShapeBorderClipper, I[1]);
  dart.setFieldSignature(proxy_box.ShapeBorderClipper, () => ({
    __proto__: dart.getFields(proxy_box.ShapeBorderClipper.__proto__),
    shape: dart.finalFieldType(borders.ShapeBorder),
    textDirection: dart.finalFieldType(dart.nullable(ui.TextDirection))
  }));
  var _clip = dart.privateName(proxy_box, "_clip");
  var _debugPaint = dart.privateName(proxy_box, "_debugPaint");
  var _debugText = dart.privateName(proxy_box, "_debugText");
  var _clipper = dart.privateName(proxy_box, "_clipper");
  var _clipBehavior = dart.privateName(proxy_box, "_clipBehavior");
  var _markNeedsClip = dart.privateName(proxy_box, "_markNeedsClip");
  var _defaultClip = dart.privateName(proxy_box, "_defaultClip");
  var _updateClip = dart.privateName(proxy_box, "_updateClip");
  var OffsetBase__dy = dart.privateName(ui, "OffsetBase._dy");
  var OffsetBase__dx = dart.privateName(ui, "OffsetBase._dx");
  var TextStyle_fontFeatures = dart.privateName(text_style, "TextStyle.fontFeatures");
  var TextStyle_shadows = dart.privateName(text_style, "TextStyle.shadows");
  var TextStyle_debugLabel = dart.privateName(text_style, "TextStyle.debugLabel");
  var TextStyle_decorationThickness = dart.privateName(text_style, "TextStyle.decorationThickness");
  var TextStyle_decorationStyle = dart.privateName(text_style, "TextStyle.decorationStyle");
  var TextStyle_decorationColor = dart.privateName(text_style, "TextStyle.decorationColor");
  var TextStyle_decoration = dart.privateName(text_style, "TextStyle.decoration");
  var TextStyle_background = dart.privateName(text_style, "TextStyle.background");
  var TextStyle_foreground = dart.privateName(text_style, "TextStyle.foreground");
  var TextStyle_locale = dart.privateName(text_style, "TextStyle.locale");
  var TextStyle_height = dart.privateName(text_style, "TextStyle.height");
  var TextStyle_textBaseline = dart.privateName(text_style, "TextStyle.textBaseline");
  var TextStyle_wordSpacing = dart.privateName(text_style, "TextStyle.wordSpacing");
  var TextStyle_letterSpacing = dart.privateName(text_style, "TextStyle.letterSpacing");
  var TextStyle_fontStyle = dart.privateName(text_style, "TextStyle.fontStyle");
  var TextStyle_fontWeight = dart.privateName(text_style, "TextStyle.fontWeight");
  var TextStyle_fontSize = dart.privateName(text_style, "TextStyle.fontSize");
  var TextStyle__package = dart.privateName(text_style, "TextStyle._package");
  var TextStyle__fontFamilyFallback = dart.privateName(text_style, "TextStyle._fontFamilyFallback");
  var TextStyle_fontFamily = dart.privateName(text_style, "TextStyle.fontFamily");
  var TextStyle_backgroundColor = dart.privateName(text_style, "TextStyle.backgroundColor");
  var TextStyle_color = dart.privateName(text_style, "TextStyle.color");
  var TextStyle_inherit = dart.privateName(text_style, "TextStyle.inherit");
  var InlineSpan_style = dart.privateName(inline_span, "InlineSpan.style");
  var TextSpan_semanticsLabel = dart.privateName(text_span, "TextSpan.semanticsLabel");
  var TextSpan_recognizer = dart.privateName(text_span, "TextSpan.recognizer");
  var TextSpan_children = dart.privateName(text_span, "TextSpan.children");
  var TextSpan_text = dart.privateName(text_span, "TextSpan.text");
  const _is__RenderCustomClip_default = Symbol('_is__RenderCustomClip_default');
  proxy_box._RenderCustomClip$ = dart.generic(T => {
    var CustomClipperOfT = () => (CustomClipperOfT = dart.constFn(proxy_box.CustomClipper$(T)))();
    var CustomClipperNOfT = () => (CustomClipperNOfT = dart.constFn(dart.nullable(CustomClipperOfT())))();
    class _RenderCustomClip extends proxy_box.RenderProxyBox {
      get clipper() {
        return this[_clipper];
      }
      set clipper(newClipper) {
        let t0, t0$;
        CustomClipperNOfT().as(newClipper);
        if (dart.equals(this[_clipper], newClipper)) return;
        let oldClipper = this[_clipper];
        this[_clipper] = newClipper;
        if (!(newClipper != null || oldClipper != null)) dart.assertFailed(null, I[0], 1326, 12, "newClipper != null || oldClipper != null");
        if (newClipper == null || oldClipper == null || !dart.equals(dart.runtimeType(newClipper), dart.runtimeType(oldClipper)) || dart.test(newClipper.shouldReclip(oldClipper))) {
          this[_markNeedsClip]();
        }
        if (dart.test(this.attached)) {
          t0 = oldClipper;
          t0 == null ? null : t0.removeListener(dart.bind(this, _markNeedsClip));
          t0$ = newClipper;
          t0$ == null ? null : t0$.addListener(dart.bind(this, _markNeedsClip));
        }
      }
      attach(owner) {
        let t0;
        object.PipelineOwner.as(owner);
        if (owner == null) dart.nullFailed(I[0], 1339, 29, "owner");
        super.attach(owner);
        t0 = this[_clipper];
        t0 == null ? null : t0.addListener(dart.bind(this, _markNeedsClip));
      }
      detach() {
        let t0;
        t0 = this[_clipper];
        t0 == null ? null : t0.removeListener(dart.bind(this, _markNeedsClip));
        super.detach();
      }
      [_markNeedsClip]() {
        this[_clip] = null;
        this.markNeedsPaint();
        this.markNeedsSemanticsUpdate();
      }
      get clipBehavior() {
        return this[_clipBehavior];
      }
      set clipBehavior(value) {
        if (value == null) dart.nullFailed(I[0], 1360, 25, "value");
        if (value != this[_clipBehavior]) {
          this[_clipBehavior] = value;
          this.markNeedsPaint();
        }
      }
      performLayout() {
        let oldSize = dart.test(this.hasSize) ? this.size : null;
        super.performLayout();
        if (!dart.equals(oldSize, this.size)) this[_clip] = null;
      }
      [_updateClip]() {
        let t0, t0$;
        this[_clip] == null ? this[_clip] = (t0$ = (t0 = this[_clipper], t0 == null ? null : t0.getClip(this.size)), t0$ == null ? this[_defaultClip] : t0$) : null;
      }
      describeApproximatePaintClip(child) {
        let t0, t0$;
        object.RenderObject.as(child);
        if (child == null) dart.nullFailed(I[0], 1381, 50, "child");
        t0$ = (t0 = this[_clipper], t0 == null ? null : t0.getApproximateClipRect(this.size));
        return t0$ == null ? ui.Offset.zero['&'](this.size) : t0$;
      }
      debugPaintSize(context, offset) {
        if (context == null) dart.nullFailed(I[0], 1388, 39, "context");
        if (offset == null) dart.nullFailed(I[0], 1388, 55, "offset");
        if (!dart.test(dart.fn(() => {
          let t0, t0$;
          this[_debugPaint] == null ? this[_debugPaint] = (t0 = ui.Paint.new(), (() => {
            t0.shader = ui.Gradient.linear(ui.Offset.zero, C[9] || CT.C9, T$.JSArrayOfColor().of([C[10] || CT.C10, C[11] || CT.C11, C[11] || CT.C11, C[10] || CT.C10]), T$.JSArrayOfdouble().of([0.25, 0.25, 0.75, 0.75]), ui.TileMode.repeated);
            t0.strokeWidth = 2.0;
            t0.style = ui.PaintingStyle.stroke;
            return t0;
          })()) : null;
          this[_debugText] == null ? this[_debugText] = (t0$ = new text_painter.TextPainter.new({text: C[12] || CT.C12, textDirection: ui.TextDirection.rtl}), (() => {
            t0$.layout();
            return t0$;
          })()) : null;
          return true;
        }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 1389, 12, "() {\r\n      _debugPaint ??= Paint()\r\n        ..shader = ui.Gradient.linear(\r\n          Offset.zero,\r\n          const Offset(10.0, 10.0),\r\n          <Color>[const Color(0x00000000), const Color(0xFFFF00FF), const Color(0xFFFF00FF), const Color(0x00000000)],\r\n          <double>[0.25, 0.25, 0.75, 0.75],\r\n          TileMode.repeated,\r\n        )\r\n        ..strokeWidth = 2.0\r\n        ..style = PaintingStyle.stroke;\r\n      _debugText ??= TextPainter(\r\n        text: const TextSpan(\r\n          text: '✂',\r\n          style: TextStyle(\r\n            color: Color(0xFFFF00FF),\r\n              fontSize: 14.0,\r\n            ),\r\n          ),\r\n          textDirection: TextDirection.rtl, // doesn't matter, it's one character\r\n        )\r\n        ..layout();\r\n      return true;\r\n    }()");
      }
    }
    (_RenderCustomClip.new = function(opts) {
      let child = opts && 'child' in opts ? opts.child : null;
      let clipper = opts && 'clipper' in opts ? opts.clipper : null;
      let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[8] || CT.C8;
      if (clipBehavior == null) dart.nullFailed(I[0], 1312, 10, "clipBehavior");
      this[_clip] = null;
      this[_debugPaint] = null;
      this[_debugText] = null;
      if (!(clipBehavior != null)) dart.assertFailed(null, I[0], 1313, 15, "clipBehavior != null");
      this[_clipper] = clipper;
      this[_clipBehavior] = clipBehavior;
      _RenderCustomClip.__proto__.new.call(this, child);
      ;
    }).prototype = _RenderCustomClip.prototype;
    dart.addTypeTests(_RenderCustomClip);
    _RenderCustomClip.prototype[_is__RenderCustomClip_default] = true;
    dart.addTypeCaches(_RenderCustomClip);
    dart.setMethodSignature(_RenderCustomClip, () => ({
      __proto__: dart.getMethods(_RenderCustomClip.__proto__),
      [_markNeedsClip]: dart.fnType(dart.void, []),
      [_updateClip]: dart.fnType(dart.void, []),
      describeApproximatePaintClip: dart.fnType(ui.Rect, [dart.nullable(core.Object)])
    }));
    dart.setGetterSignature(_RenderCustomClip, () => ({
      __proto__: dart.getGetters(_RenderCustomClip.__proto__),
      clipper: dart.nullable(proxy_box.CustomClipper$(T)),
      clipBehavior: ui.Clip
    }));
    dart.setSetterSignature(_RenderCustomClip, () => ({
      __proto__: dart.getSetters(_RenderCustomClip.__proto__),
      clipper: dart.nullable(core.Object),
      clipBehavior: ui.Clip
    }));
    dart.setLibraryUri(_RenderCustomClip, I[1]);
    dart.setFieldSignature(_RenderCustomClip, () => ({
      __proto__: dart.getFields(_RenderCustomClip.__proto__),
      [_clipper]: dart.fieldType(dart.nullable(proxy_box.CustomClipper$(T))),
      [_clip]: dart.fieldType(dart.nullable(T)),
      [_clipBehavior]: dart.fieldType(ui.Clip),
      [_debugPaint]: dart.fieldType(dart.nullable(ui.Paint)),
      [_debugText]: dart.fieldType(dart.nullable(text_painter.TextPainter))
    }));
    return _RenderCustomClip;
  });
  proxy_box._RenderCustomClip = proxy_box._RenderCustomClip$();
  dart.addTypeTests(proxy_box._RenderCustomClip, _is__RenderCustomClip_default);
  proxy_box.RenderClipRect = class RenderClipRect extends proxy_box._RenderCustomClip$(ui.Rect) {
    get [_defaultClip]() {
      return ui.Offset.zero['&'](this.size);
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 1440, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 1440, 59, "position");
      if (this[_clipper] != null) {
        this[_updateClip]();
        if (!(this[_clip] != null)) dart.assertFailed(null, I[0], 1443, 14, "_clip != null");
        if (!dart.test(dart.nullCheck(this[_clip]).contains(position))) return false;
      }
      return super.hitTest(result, {position: position});
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 1451, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 1451, 46, "offset");
      if (this.child != null) {
        this[_updateClip]();
        this.layer = context.pushClipRect(this.needsCompositing, offset, dart.nullCheck(this[_clip]), dart.bind(this, 'paint', super.paint), {clipBehavior: this.clipBehavior, oldLayer: T$.ClipRectLayerN().as(this.layer)});
      } else {
        this.layer = null;
      }
    }
    debugPaintSize(context, offset) {
      if (context == null) dart.nullFailed(I[0], 1468, 39, "context");
      if (offset == null) dart.nullFailed(I[0], 1468, 55, "offset");
      if (!dart.test(dart.fn(() => {
        if (this.child != null) {
          super.debugPaintSize(context, offset);
          context.canvas.drawRect(dart.nullCheck(this[_clip]).shift(offset), dart.nullCheck(this[_debugPaint]));
          dart.nullCheck(this[_debugText]).paint(context.canvas, offset['+'](new ui.Offset.new(dart.notNull(dart.nullCheck(this[_clip]).width) / 8.0, -dart.nullCheck(dart.nullCheck(dart.nullCheck(dart.nullCheck(this[_debugText]).text).style).fontSize) * 1.1)));
        }
        return true;
      }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 1469, 12, "() {\r\n      if (child != null) {\r\n        super.debugPaintSize(context, offset);\r\n        context.canvas.drawRect(_clip!.shift(offset), _debugPaint!);\r\n        _debugText!.paint(context.canvas, offset + Offset(_clip!.width / 8.0, -_debugText!.text!.style!.fontSize! * 1.1));\r\n      }\r\n      return true;\r\n    }()");
    }
  };
  (proxy_box.RenderClipRect.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let clipper = opts && 'clipper' in opts ? opts.clipper : null;
    let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[8] || CT.C8;
    if (clipBehavior == null) dart.nullFailed(I[0], 1431, 10, "clipBehavior");
    if (!(clipBehavior != null)) dart.assertFailed(null, I[0], 1432, 15, "clipBehavior != null");
    if (!(clipBehavior != ui.Clip.none)) dart.assertFailed(null, I[0], 1433, 15, "clipBehavior != Clip.none");
    proxy_box.RenderClipRect.__proto__.new.call(this, {child: child, clipper: clipper, clipBehavior: clipBehavior});
    ;
  }).prototype = proxy_box.RenderClipRect.prototype;
  dart.addTypeTests(proxy_box.RenderClipRect);
  dart.addTypeCaches(proxy_box.RenderClipRect);
  dart.setGetterSignature(proxy_box.RenderClipRect, () => ({
    __proto__: dart.getGetters(proxy_box.RenderClipRect.__proto__),
    [_defaultClip]: ui.Rect
  }));
  dart.setLibraryUri(proxy_box.RenderClipRect, I[1]);
  var Radius_y = dart.privateName(ui, "Radius.y");
  var Radius_x = dart.privateName(ui, "Radius.x");
  var BorderRadius_bottomRight = dart.privateName(border_radius, "BorderRadius.bottomRight");
  var BorderRadius_bottomLeft = dart.privateName(border_radius, "BorderRadius.bottomLeft");
  var BorderRadius_topRight = dart.privateName(border_radius, "BorderRadius.topRight");
  var BorderRadius_topLeft = dart.privateName(border_radius, "BorderRadius.topLeft");
  var _borderRadius = dart.privateName(proxy_box, "_borderRadius");
  proxy_box.RenderClipRRect = class RenderClipRRect extends proxy_box._RenderCustomClip$(ui.RRect) {
    get borderRadius() {
      return this[_borderRadius];
    }
    set borderRadius(value) {
      if (value == null) dart.nullFailed(I[0], 1517, 33, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 1518, 12, "value != null");
      if (dart.equals(this[_borderRadius], value)) return;
      this[_borderRadius] = value;
      this[_markNeedsClip]();
    }
    get [_defaultClip]() {
      return this[_borderRadius].toRRect(ui.Offset.zero['&'](this.size));
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 1529, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 1529, 59, "position");
      if (this[_clipper] != null) {
        this[_updateClip]();
        if (!(this[_clip] != null)) dart.assertFailed(null, I[0], 1532, 14, "_clip != null");
        if (!dart.test(dart.nullCheck(this[_clip]).contains(position))) return false;
      }
      return super.hitTest(result, {position: position});
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 1540, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 1540, 46, "offset");
      if (this.child != null) {
        this[_updateClip]();
        this.layer = context.pushClipRRect(this.needsCompositing, offset, dart.nullCheck(this[_clip]).outerRect, dart.nullCheck(this[_clip]), dart.bind(this, 'paint', super.paint), {clipBehavior: this.clipBehavior, oldLayer: T$.ClipRRectLayerN().as(this.layer)});
      } else {
        this.layer = null;
      }
    }
    debugPaintSize(context, offset) {
      if (context == null) dart.nullFailed(I[0], 1556, 39, "context");
      if (offset == null) dart.nullFailed(I[0], 1556, 55, "offset");
      if (!dart.test(dart.fn(() => {
        if (this.child != null) {
          super.debugPaintSize(context, offset);
          context.canvas.drawRRect(dart.nullCheck(this[_clip]).shift(offset), dart.nullCheck(this[_debugPaint]));
          dart.nullCheck(this[_debugText]).paint(context.canvas, offset['+'](new ui.Offset.new(dart.nullCheck(this[_clip]).tlRadiusX, -dart.nullCheck(dart.nullCheck(dart.nullCheck(dart.nullCheck(this[_debugText]).text).style).fontSize) * 1.1)));
        }
        return true;
      }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 1557, 12, "() {\r\n      if (child != null) {\r\n        super.debugPaintSize(context, offset);\r\n        context.canvas.drawRRect(_clip!.shift(offset), _debugPaint!);\r\n        _debugText!.paint(context.canvas, offset + Offset(_clip!.tlRadiusX, -_debugText!.text!.style!.fontSize! * 1.1));\r\n      }\r\n      return true;\r\n    }()");
    }
  };
  (proxy_box.RenderClipRRect.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let borderRadius = opts && 'borderRadius' in opts ? opts.borderRadius : C[14] || CT.C14;
    if (borderRadius == null) dart.nullFailed(I[0], 1496, 18, "borderRadius");
    let clipper = opts && 'clipper' in opts ? opts.clipper : null;
    let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[8] || CT.C8;
    if (clipBehavior == null) dart.nullFailed(I[0], 1498, 10, "clipBehavior");
    if (!(clipBehavior != null)) dart.assertFailed(null, I[0], 1499, 15, "clipBehavior != null");
    if (!(clipBehavior != ui.Clip.none)) dart.assertFailed(null, I[0], 1500, 15, "clipBehavior != Clip.none");
    this[_borderRadius] = borderRadius;
    proxy_box.RenderClipRRect.__proto__.new.call(this, {child: child, clipper: clipper, clipBehavior: clipBehavior});
    if (!(this[_borderRadius] != null || clipper != null)) dart.assertFailed(null, I[0], 1506, 12, "_borderRadius != null || clipper != null");
  }).prototype = proxy_box.RenderClipRRect.prototype;
  dart.addTypeTests(proxy_box.RenderClipRRect);
  dart.addTypeCaches(proxy_box.RenderClipRRect);
  dart.setGetterSignature(proxy_box.RenderClipRRect, () => ({
    __proto__: dart.getGetters(proxy_box.RenderClipRRect.__proto__),
    borderRadius: border_radius.BorderRadius,
    [_defaultClip]: ui.RRect
  }));
  dart.setSetterSignature(proxy_box.RenderClipRRect, () => ({
    __proto__: dart.getSetters(proxy_box.RenderClipRRect.__proto__),
    borderRadius: border_radius.BorderRadius
  }));
  dart.setLibraryUri(proxy_box.RenderClipRRect, I[1]);
  dart.setFieldSignature(proxy_box.RenderClipRRect, () => ({
    __proto__: dart.getFields(proxy_box.RenderClipRRect.__proto__),
    [_borderRadius]: dart.fieldType(border_radius.BorderRadius)
  }));
  var _cachedRect = dart.privateName(proxy_box, "_cachedRect");
  var __RenderClipOval__cachedPath = dart.privateName(proxy_box, "_#RenderClipOval#_cachedPath");
  var __RenderClipOval__cachedPath_isSet = dart.privateName(proxy_box, "_#RenderClipOval#_cachedPath#isSet");
  var _cachedPath = dart.privateName(proxy_box, "_cachedPath");
  var _getClipPath = dart.privateName(proxy_box, "_getClipPath");
  proxy_box.RenderClipOval = class RenderClipOval extends proxy_box._RenderCustomClip$(ui.Rect) {
    get [_cachedPath]() {
      let t0;
      return dart.test(this[__RenderClipOval__cachedPath_isSet]) ? (t0 = this[__RenderClipOval__cachedPath], t0) : dart.throw(new _internal.LateError.fieldNI("_cachedPath"));
    }
    set [_cachedPath](t0) {
      if (t0 == null) dart.nullFailed(I[0], 1589, 13, "null");
      this[__RenderClipOval__cachedPath_isSet] = true;
      this[__RenderClipOval__cachedPath] = t0;
    }
    [_getClipPath](rect) {
      let t1;
      if (rect == null) dart.nullFailed(I[0], 1591, 26, "rect");
      if (!dart.equals(rect, this[_cachedRect])) {
        this[_cachedRect] = rect;
        this[_cachedPath] = (t1 = ui.Path.new(), (() => {
          t1.addOval(dart.nullCheck(this[_cachedRect]));
          return t1;
        })());
      }
      return this[_cachedPath];
    }
    get [_defaultClip]() {
      return ui.Offset.zero['&'](this.size);
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 1603, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 1603, 59, "position");
      this[_updateClip]();
      if (!(this[_clip] != null)) dart.assertFailed(null, I[0], 1605, 12, "_clip != null");
      let center = dart.nullCheck(this[_clip]).center;
      let offset = new ui.Offset.new((dart.notNull(position.dx) - dart.notNull(center.dx)) / dart.notNull(dart.nullCheck(this[_clip]).width), (dart.notNull(position.dy) - dart.notNull(center.dy)) / dart.notNull(dart.nullCheck(this[_clip]).height));
      if (dart.notNull(offset.distanceSquared) > 0.25) return false;
      return super.hitTest(result, {position: position});
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 1617, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 1617, 46, "offset");
      if (this.child != null) {
        this[_updateClip]();
        this.layer = context.pushClipPath(this.needsCompositing, offset, dart.nullCheck(this[_clip]), this[_getClipPath](dart.nullCheck(this[_clip])), dart.bind(this, 'paint', super.paint), {clipBehavior: this.clipBehavior, oldLayer: T$.ClipPathLayerN().as(this.layer)});
      } else {
        this.layer = null;
      }
    }
    debugPaintSize(context, offset) {
      if (context == null) dart.nullFailed(I[0], 1635, 39, "context");
      if (offset == null) dart.nullFailed(I[0], 1635, 55, "offset");
      if (!dart.test(dart.fn(() => {
        if (this.child != null) {
          super.debugPaintSize(context, offset);
          context.canvas.drawPath(this[_getClipPath](dart.nullCheck(this[_clip])).shift(offset), dart.nullCheck(this[_debugPaint]));
          dart.nullCheck(this[_debugText]).paint(context.canvas, offset['+'](new ui.Offset.new((dart.notNull(dart.nullCheck(this[_clip]).width) - dart.notNull(dart.nullCheck(this[_debugText]).width)) / 2.0, -dart.nullCheck(dart.nullCheck(dart.nullCheck(dart.nullCheck(this[_debugText]).text).style).fontSize) * 1.1)));
        }
        return true;
      }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 1636, 12, "() {\r\n      if (child != null) {\r\n        super.debugPaintSize(context, offset);\r\n        context.canvas.drawPath(_getClipPath(_clip!).shift(offset), _debugPaint!);\r\n        _debugText!.paint(context.canvas, offset + Offset((_clip!.width - _debugText!.width) / 2.0, -_debugText!.text!.style!.fontSize! * 1.1));\r\n      }\r\n      return true;\r\n    }()");
    }
  };
  (proxy_box.RenderClipOval.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let clipper = opts && 'clipper' in opts ? opts.clipper : null;
    let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[8] || CT.C8;
    if (clipBehavior == null) dart.nullFailed(I[0], 1583, 10, "clipBehavior");
    this[_cachedRect] = null;
    this[__RenderClipOval__cachedPath] = null;
    this[__RenderClipOval__cachedPath_isSet] = false;
    if (!(clipBehavior != null)) dart.assertFailed(null, I[0], 1584, 15, "clipBehavior != null");
    if (!(clipBehavior != ui.Clip.none)) dart.assertFailed(null, I[0], 1585, 15, "clipBehavior != Clip.none");
    proxy_box.RenderClipOval.__proto__.new.call(this, {child: child, clipper: clipper, clipBehavior: clipBehavior});
    ;
  }).prototype = proxy_box.RenderClipOval.prototype;
  dart.addTypeTests(proxy_box.RenderClipOval);
  dart.addTypeCaches(proxy_box.RenderClipOval);
  dart.setMethodSignature(proxy_box.RenderClipOval, () => ({
    __proto__: dart.getMethods(proxy_box.RenderClipOval.__proto__),
    [_getClipPath]: dart.fnType(ui.Path, [ui.Rect])
  }));
  dart.setGetterSignature(proxy_box.RenderClipOval, () => ({
    __proto__: dart.getGetters(proxy_box.RenderClipOval.__proto__),
    [_cachedPath]: ui.Path,
    [_defaultClip]: ui.Rect
  }));
  dart.setSetterSignature(proxy_box.RenderClipOval, () => ({
    __proto__: dart.getSetters(proxy_box.RenderClipOval.__proto__),
    [_cachedPath]: ui.Path
  }));
  dart.setLibraryUri(proxy_box.RenderClipOval, I[1]);
  dart.setFieldSignature(proxy_box.RenderClipOval, () => ({
    __proto__: dart.getFields(proxy_box.RenderClipOval.__proto__),
    [_cachedRect]: dart.fieldType(dart.nullable(ui.Rect)),
    [__RenderClipOval__cachedPath]: dart.fieldType(dart.nullable(ui.Path)),
    [__RenderClipOval__cachedPath_isSet]: dart.fieldType(core.bool)
  }));
  proxy_box.RenderClipPath = class RenderClipPath extends proxy_box._RenderCustomClip$(ui.Path) {
    get [_defaultClip]() {
      let t1;
      t1 = ui.Path.new();
      return (() => {
        t1.addRect(ui.Offset.zero['&'](this.size));
        return t1;
      })();
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 1679, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 1679, 59, "position");
      if (this[_clipper] != null) {
        this[_updateClip]();
        if (!(this[_clip] != null)) dart.assertFailed(null, I[0], 1682, 14, "_clip != null");
        if (!dart.test(dart.nullCheck(this[_clip]).contains(position))) return false;
      }
      return super.hitTest(result, {position: position});
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 1690, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 1690, 46, "offset");
      if (this.child != null) {
        this[_updateClip]();
        this.layer = context.pushClipPath(this.needsCompositing, offset, ui.Offset.zero['&'](this.size), dart.nullCheck(this[_clip]), dart.bind(this, 'paint', super.paint), {clipBehavior: this.clipBehavior, oldLayer: T$.ClipPathLayerN().as(this.layer)});
      } else {
        this.layer = null;
      }
    }
    debugPaintSize(context, offset) {
      if (context == null) dart.nullFailed(I[0], 1708, 39, "context");
      if (offset == null) dart.nullFailed(I[0], 1708, 55, "offset");
      if (!dart.test(dart.fn(() => {
        if (this.child != null) {
          super.debugPaintSize(context, offset);
          context.canvas.drawPath(dart.nullCheck(this[_clip]).shift(offset), dart.nullCheck(this[_debugPaint]));
          dart.nullCheck(this[_debugText]).paint(context.canvas, offset);
        }
        return true;
      }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 1709, 12, "() {\r\n      if (child != null) {\r\n        super.debugPaintSize(context, offset);\r\n        context.canvas.drawPath(_clip!.shift(offset), _debugPaint!);\r\n        _debugText!.paint(context.canvas, offset);\r\n      }\r\n      return true;\r\n    }()");
    }
  };
  (proxy_box.RenderClipPath.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let clipper = opts && 'clipper' in opts ? opts.clipper : null;
    let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[8] || CT.C8;
    if (clipBehavior == null) dart.nullFailed(I[0], 1670, 10, "clipBehavior");
    if (!(clipBehavior != null)) dart.assertFailed(null, I[0], 1671, 15, "clipBehavior != null");
    if (!(clipBehavior != ui.Clip.none)) dart.assertFailed(null, I[0], 1672, 15, "clipBehavior != Clip.none");
    proxy_box.RenderClipPath.__proto__.new.call(this, {child: child, clipper: clipper, clipBehavior: clipBehavior});
    ;
  }).prototype = proxy_box.RenderClipPath.prototype;
  dart.addTypeTests(proxy_box.RenderClipPath);
  dart.addTypeCaches(proxy_box.RenderClipPath);
  dart.setGetterSignature(proxy_box.RenderClipPath, () => ({
    __proto__: dart.getGetters(proxy_box.RenderClipPath.__proto__),
    [_defaultClip]: ui.Path
  }));
  dart.setLibraryUri(proxy_box.RenderClipPath, I[1]);
  var _elevation = dart.privateName(proxy_box, "_elevation");
  var _color = dart.privateName(proxy_box, "_color");
  var _shadowColor = dart.privateName(proxy_box, "_shadowColor");
  const _is__RenderPhysicalModelBase_default = Symbol('_is__RenderPhysicalModelBase_default');
  proxy_box._RenderPhysicalModelBase$ = dart.generic(T => {
    class _RenderPhysicalModelBase extends proxy_box._RenderCustomClip$(T) {
      get elevation() {
        return this[_elevation];
      }
      set elevation(value) {
        if (value == null) dart.nullFailed(I[0], 1751, 24, "value");
        if (!(value != null && dart.notNull(value) >= 0.0)) dart.assertFailed(null, I[0], 1752, 12, "value != null && value >= 0.0");
        if (this.elevation == value) return;
        let didNeedCompositing = this.alwaysNeedsCompositing;
        this[_elevation] = value;
        if (didNeedCompositing != this.alwaysNeedsCompositing) this.markNeedsCompositingBitsUpdate();
        this.markNeedsPaint();
      }
      get shadowColor() {
        return this[_shadowColor];
      }
      set shadowColor(value) {
        if (value == null) dart.nullFailed(I[0], 1765, 25, "value");
        if (!(value != null)) dart.assertFailed(null, I[0], 1766, 12, "value != null");
        if (dart.equals(this.shadowColor, value)) return;
        this[_shadowColor] = value;
        this.markNeedsPaint();
      }
      get color() {
        return this[_color];
      }
      set color(value) {
        if (value == null) dart.nullFailed(I[0], 1776, 19, "value");
        if (!(value != null)) dart.assertFailed(null, I[0], 1777, 12, "value != null");
        if (dart.equals(this.color, value)) return;
        this[_color] = value;
        this.markNeedsPaint();
      }
      get alwaysNeedsCompositing() {
        return true;
      }
      describeSemanticsConfiguration(config) {
        if (config == null) dart.nullFailed(I[0], 1788, 62, "config");
        super.describeSemanticsConfiguration(config);
        config.elevation = this.elevation;
      }
      debugFillProperties(description) {
        if (description == null) dart.nullFailed(I[0], 1794, 56, "description");
        super.debugFillProperties(description);
        description.add(new diagnostics.DoubleProperty.new("elevation", this.elevation));
        description.add(new colors.ColorProperty.new("color", this.color));
        description.add(new colors.ColorProperty.new("shadowColor", this.color));
      }
    }
    (_RenderPhysicalModelBase.new = function(opts) {
      let child = opts && 'child' in opts ? opts.child : null;
      let elevation = opts && 'elevation' in opts ? opts.elevation : null;
      if (elevation == null) dart.nullFailed(I[0], 1729, 21, "elevation");
      let color = opts && 'color' in opts ? opts.color : null;
      if (color == null) dart.nullFailed(I[0], 1730, 20, "color");
      let shadowColor = opts && 'shadowColor' in opts ? opts.shadowColor : null;
      if (shadowColor == null) dart.nullFailed(I[0], 1731, 20, "shadowColor");
      let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[16] || CT.C16;
      if (clipBehavior == null) dart.nullFailed(I[0], 1732, 10, "clipBehavior");
      let clipper = opts && 'clipper' in opts ? opts.clipper : null;
      if (!(elevation != null && dart.notNull(elevation) >= 0.0)) dart.assertFailed(null, I[0], 1734, 15, "elevation != null && elevation >= 0.0");
      if (!(color != null)) dart.assertFailed(null, I[0], 1735, 15, "color != null");
      if (!(shadowColor != null)) dart.assertFailed(null, I[0], 1736, 15, "shadowColor != null");
      if (!(clipBehavior != null)) dart.assertFailed(null, I[0], 1737, 15, "clipBehavior != null");
      this[_elevation] = elevation;
      this[_color] = color;
      this[_shadowColor] = shadowColor;
      _RenderPhysicalModelBase.__proto__.new.call(this, {child: child, clipBehavior: clipBehavior, clipper: clipper});
      ;
    }).prototype = _RenderPhysicalModelBase.prototype;
    dart.addTypeTests(_RenderPhysicalModelBase);
    _RenderPhysicalModelBase.prototype[_is__RenderPhysicalModelBase_default] = true;
    dart.addTypeCaches(_RenderPhysicalModelBase);
    dart.setGetterSignature(_RenderPhysicalModelBase, () => ({
      __proto__: dart.getGetters(_RenderPhysicalModelBase.__proto__),
      elevation: core.double,
      shadowColor: ui.Color,
      color: ui.Color
    }));
    dart.setSetterSignature(_RenderPhysicalModelBase, () => ({
      __proto__: dart.getSetters(_RenderPhysicalModelBase.__proto__),
      elevation: core.double,
      shadowColor: ui.Color,
      color: ui.Color
    }));
    dart.setLibraryUri(_RenderPhysicalModelBase, I[1]);
    dart.setFieldSignature(_RenderPhysicalModelBase, () => ({
      __proto__: dart.getFields(_RenderPhysicalModelBase.__proto__),
      [_elevation]: dart.fieldType(core.double),
      [_shadowColor]: dart.fieldType(ui.Color),
      [_color]: dart.fieldType(ui.Color)
    }));
    return _RenderPhysicalModelBase;
  });
  proxy_box._RenderPhysicalModelBase = proxy_box._RenderPhysicalModelBase$();
  dart.addTypeTests(proxy_box._RenderPhysicalModelBase, _is__RenderPhysicalModelBase_default);
  var _name$0 = dart.privateName(box_border, "_name");
  var _shape = dart.privateName(proxy_box, "_shape");
  proxy_box.RenderPhysicalModel = class RenderPhysicalModel extends proxy_box._RenderPhysicalModelBase$(ui.RRect) {
    get layer() {
      return T$.PhysicalModelLayerN().as(super.layer);
    }
    set layer(value) {
      super.layer = value;
    }
    get shape() {
      return this[_shape];
    }
    set shape(value) {
      if (value == null) dart.nullFailed(I[0], 1846, 22, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 1847, 12, "value != null");
      if (this.shape == value) return;
      this[_shape] = value;
      this[_markNeedsClip]();
    }
    get borderRadius() {
      return this[_borderRadius];
    }
    set borderRadius(value) {
      if (dart.equals(this.borderRadius, value)) return;
      this[_borderRadius] = value;
      this[_markNeedsClip]();
    }
    get [_defaultClip]() {
      let t1;
      if (!dart.test(this.hasSize)) dart.assertFailed(null, I[0], 1873, 12, "hasSize");
      if (!(this[_shape] != null)) dart.assertFailed(null, I[0], 1874, 12, "_shape != null");
      switch (this[_shape]) {
        case C[17] || CT.C17:
        {
          return (t1 = this.borderRadius, t1 == null ? border_radius.BorderRadius.zero : t1).toRRect(ui.Offset.zero['&'](this.size));
        }
        case C[19] || CT.C19:
        {
          let rect = ui.Offset.zero['&'](this.size);
          return new ui.RRect.fromRectXY(rect, dart.notNull(rect.width) / 2, dart.notNull(rect.height) / 2);
        }
        default:
        {
          dart.throw(new _internal.ReachabilityError.new("`null` encountered as case in a switch expression with a non-nullable enum type."));
        }
      }
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 1885, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 1885, 59, "position");
      if (this[_clipper] != null) {
        this[_updateClip]();
        if (!(this[_clip] != null)) dart.assertFailed(null, I[0], 1888, 14, "_clip != null");
        if (!dart.test(dart.nullCheck(this[_clip]).contains(position))) return false;
      }
      return super.hitTest(result, {position: position});
    }
    paint(context, offset) {
      let t1, t1$;
      if (context == null) dart.nullFailed(I[0], 1896, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 1896, 46, "offset");
      if (this.child != null) {
        this[_updateClip]();
        let offsetRRect = dart.nullCheck(this[_clip]).shift(offset);
        let offsetBounds = offsetRRect.outerRect;
        let offsetRRectAsPath = (t1 = ui.Path.new(), (() => {
          t1.addRRect(offsetRRect);
          return t1;
        })());
        let paintShadows = true;
        if (!dart.test(dart.fn(() => {
          let t1;
          if (dart.test(debug.debugDisableShadows)) {
            if (dart.notNull(this.elevation) > 0.0) {
              context.canvas.drawRRect(offsetRRect, (t1 = ui.Paint.new(), (() => {
                t1.color = this.shadowColor;
                t1.style = ui.PaintingStyle.stroke;
                t1.strokeWidth = dart.notNull(this.elevation) * 2.0;
                return t1;
              })()));
            }
            paintShadows = false;
          }
          return true;
        }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 1903, 14, "() {\r\n        if (debugDisableShadows) {\r\n          if (elevation > 0.0) {\r\n            context.canvas.drawRRect(\r\n              offsetRRect,\r\n              Paint()\r\n                ..color = shadowColor\r\n                ..style = PaintingStyle.stroke\r\n                ..strokeWidth = elevation * 2.0,\r\n            );\r\n          }\r\n          paintShadows = false;\r\n        }\r\n        return true;\r\n      }()");
        this.layer == null ? this.layer = new layer.PhysicalModelLayer.new() : null;
        t1$ = dart.nullCheck(this.layer);
        (() => {
          t1$.clipPath = offsetRRectAsPath;
          t1$.clipBehavior = this.clipBehavior;
          t1$.elevation = paintShadows ? this.elevation : 0.0;
          t1$.color = this.color;
          t1$.shadowColor = this.shadowColor;
          return t1$;
        })();
        context.pushLayer(dart.nullCheck(this.layer), dart.bind(this, 'paint', super.paint), offset, {childPaintBounds: offsetBounds});
        if (!dart.test(dart.fn(() => {
          dart.nullCheck(this.layer).debugCreator = this.debugCreator;
          return true;
        }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 1926, 14, "() {\r\n        layer!.debugCreator = debugCreator;\r\n        return true;\r\n      }()");
      } else {
        this.layer = null;
      }
    }
    debugFillProperties(description) {
      if (description == null) dart.nullFailed(I[0], 1936, 56, "description");
      super.debugFillProperties(description);
      description.add(new (T$.DiagnosticsPropertyOfBoxShape()).new("shape", this.shape));
      description.add(new (T$.DiagnosticsPropertyOfBorderRadius()).new("borderRadius", this.borderRadius));
    }
  };
  (proxy_box.RenderPhysicalModel.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let shape = opts && 'shape' in opts ? opts.shape : C[17] || CT.C17;
    if (shape == null) dart.nullFailed(I[0], 1816, 14, "shape");
    let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[16] || CT.C16;
    if (clipBehavior == null) dart.nullFailed(I[0], 1817, 10, "clipBehavior");
    let borderRadius = opts && 'borderRadius' in opts ? opts.borderRadius : null;
    let elevation = opts && 'elevation' in opts ? opts.elevation : 0;
    if (elevation == null) dart.nullFailed(I[0], 1819, 12, "elevation");
    let color = opts && 'color' in opts ? opts.color : null;
    if (color == null) dart.nullFailed(I[0], 1820, 20, "color");
    let shadowColor = opts && 'shadowColor' in opts ? opts.shadowColor : C[18] || CT.C18;
    if (shadowColor == null) dart.nullFailed(I[0], 1821, 11, "shadowColor");
    if (!(shape != null)) dart.assertFailed(null, I[0], 1822, 15, "shape != null");
    if (!(clipBehavior != null)) dart.assertFailed(null, I[0], 1823, 15, "clipBehavior != null");
    if (!(elevation != null && dart.notNull(elevation) >= 0.0)) dart.assertFailed(null, I[0], 1824, 15, "elevation != null && elevation >= 0.0");
    if (!(color != null)) dart.assertFailed(null, I[0], 1825, 15, "color != null");
    if (!(shadowColor != null)) dart.assertFailed(null, I[0], 1826, 15, "shadowColor != null");
    this[_shape] = shape;
    this[_borderRadius] = borderRadius;
    proxy_box.RenderPhysicalModel.__proto__.new.call(this, {clipBehavior: clipBehavior, child: child, elevation: elevation, color: color, shadowColor: shadowColor});
    ;
  }).prototype = proxy_box.RenderPhysicalModel.prototype;
  dart.addTypeTests(proxy_box.RenderPhysicalModel);
  dart.addTypeCaches(proxy_box.RenderPhysicalModel);
  dart.setGetterSignature(proxy_box.RenderPhysicalModel, () => ({
    __proto__: dart.getGetters(proxy_box.RenderPhysicalModel.__proto__),
    layer: dart.nullable(layer.PhysicalModelLayer),
    shape: box_border.BoxShape,
    borderRadius: dart.nullable(border_radius.BorderRadius),
    [_defaultClip]: ui.RRect
  }));
  dart.setSetterSignature(proxy_box.RenderPhysicalModel, () => ({
    __proto__: dart.getSetters(proxy_box.RenderPhysicalModel.__proto__),
    shape: box_border.BoxShape,
    borderRadius: dart.nullable(border_radius.BorderRadius)
  }));
  dart.setLibraryUri(proxy_box.RenderPhysicalModel, I[1]);
  dart.setFieldSignature(proxy_box.RenderPhysicalModel, () => ({
    __proto__: dart.getFields(proxy_box.RenderPhysicalModel.__proto__),
    [_shape]: dart.fieldType(box_border.BoxShape),
    [_borderRadius]: dart.fieldType(dart.nullable(border_radius.BorderRadius))
  }));
  proxy_box.RenderPhysicalShape = class RenderPhysicalShape extends proxy_box._RenderPhysicalModelBase$(ui.Path) {
    get layer() {
      return T$.PhysicalModelLayerN().as(super.layer);
    }
    set layer(value) {
      super.layer = value;
    }
    get [_defaultClip]() {
      let t1;
      t1 = ui.Path.new();
      return (() => {
        t1.addRect(ui.Offset.zero['&'](this.size));
        return t1;
      })();
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 1985, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 1985, 59, "position");
      if (this[_clipper] != null) {
        this[_updateClip]();
        if (!(this[_clip] != null)) dart.assertFailed(null, I[0], 1988, 14, "_clip != null");
        if (!dart.test(dart.nullCheck(this[_clip]).contains(position))) return false;
      }
      return super.hitTest(result, {position: position});
    }
    paint(context, offset) {
      let t1;
      if (context == null) dart.nullFailed(I[0], 1996, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 1996, 46, "offset");
      if (this.child != null) {
        this[_updateClip]();
        let offsetBounds = offset['&'](this.size);
        let offsetPath = dart.nullCheck(this[_clip]).shift(offset);
        let paintShadows = true;
        if (!dart.test(dart.fn(() => {
          let t1;
          if (dart.test(debug.debugDisableShadows)) {
            if (dart.notNull(this.elevation) > 0.0) {
              context.canvas.drawPath(offsetPath, (t1 = ui.Paint.new(), (() => {
                t1.color = this.shadowColor;
                t1.style = ui.PaintingStyle.stroke;
                t1.strokeWidth = dart.notNull(this.elevation) * 2.0;
                return t1;
              })()));
            }
            paintShadows = false;
          }
          return true;
        }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 2002, 14, "() {\r\n        if (debugDisableShadows) {\r\n          if (elevation > 0.0) {\r\n            context.canvas.drawPath(\r\n              offsetPath,\r\n              Paint()\r\n                ..color = shadowColor\r\n                ..style = PaintingStyle.stroke\r\n                ..strokeWidth = elevation * 2.0,\r\n            );\r\n          }\r\n          paintShadows = false;\r\n        }\r\n        return true;\r\n      }()");
        this.layer == null ? this.layer = new layer.PhysicalModelLayer.new() : null;
        t1 = dart.nullCheck(this.layer);
        (() => {
          t1.clipPath = offsetPath;
          t1.clipBehavior = this.clipBehavior;
          t1.elevation = paintShadows ? this.elevation : 0.0;
          t1.color = this.color;
          t1.shadowColor = this.shadowColor;
          return t1;
        })();
        context.pushLayer(dart.nullCheck(this.layer), dart.bind(this, 'paint', super.paint), offset, {childPaintBounds: offsetBounds});
        if (!dart.test(dart.fn(() => {
          dart.nullCheck(this.layer).debugCreator = this.debugCreator;
          return true;
        }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 2025, 14, "() {\r\n        layer!.debugCreator = debugCreator;\r\n        return true;\r\n      }()");
      } else {
        this.layer = null;
      }
    }
    debugFillProperties(description) {
      if (description == null) dart.nullFailed(I[0], 2035, 56, "description");
      super.debugFillProperties(description);
      description.add(new (T$.DiagnosticsPropertyOfCustomClipperOfPath()).new("clipper", this.clipper));
    }
  };
  (proxy_box.RenderPhysicalShape.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let clipper = opts && 'clipper' in opts ? opts.clipper : null;
    if (clipper == null) dart.nullFailed(I[0], 1960, 34, "clipper");
    let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[16] || CT.C16;
    if (clipBehavior == null) dart.nullFailed(I[0], 1961, 10, "clipBehavior");
    let elevation = opts && 'elevation' in opts ? opts.elevation : 0;
    if (elevation == null) dart.nullFailed(I[0], 1962, 12, "elevation");
    let color = opts && 'color' in opts ? opts.color : null;
    if (color == null) dart.nullFailed(I[0], 1963, 20, "color");
    let shadowColor = opts && 'shadowColor' in opts ? opts.shadowColor : C[18] || CT.C18;
    if (shadowColor == null) dart.nullFailed(I[0], 1964, 11, "shadowColor");
    if (!(clipper != null)) dart.assertFailed(null, I[0], 1965, 15, "clipper != null");
    if (!(elevation != null && dart.notNull(elevation) >= 0.0)) dart.assertFailed(null, I[0], 1966, 15, "elevation != null && elevation >= 0.0");
    if (!(color != null)) dart.assertFailed(null, I[0], 1967, 15, "color != null");
    if (!(shadowColor != null)) dart.assertFailed(null, I[0], 1968, 15, "shadowColor != null");
    proxy_box.RenderPhysicalShape.__proto__.new.call(this, {child: child, elevation: elevation, color: color, shadowColor: shadowColor, clipper: clipper, clipBehavior: clipBehavior});
    ;
  }).prototype = proxy_box.RenderPhysicalShape.prototype;
  dart.addTypeTests(proxy_box.RenderPhysicalShape);
  dart.addTypeCaches(proxy_box.RenderPhysicalShape);
  dart.setGetterSignature(proxy_box.RenderPhysicalShape, () => ({
    __proto__: dart.getGetters(proxy_box.RenderPhysicalShape.__proto__),
    layer: dart.nullable(layer.PhysicalModelLayer),
    [_defaultClip]: ui.Path
  }));
  dart.setLibraryUri(proxy_box.RenderPhysicalShape, I[1]);
  proxy_box.DecorationPosition = class DecorationPosition extends core.Object {
    toString() {
      return this[_name$];
    }
  };
  (proxy_box.DecorationPosition.new = function(index, _name) {
    if (index == null) dart.nullFailed(I[0], 2042, 6, "index");
    if (_name == null) dart.nullFailed(I[0], 2042, 6, "_name");
    this.index = index;
    this[_name$] = _name;
    ;
  }).prototype = proxy_box.DecorationPosition.prototype;
  dart.addTypeTests(proxy_box.DecorationPosition);
  dart.addTypeCaches(proxy_box.DecorationPosition);
  dart.setLibraryUri(proxy_box.DecorationPosition, I[1]);
  dart.setFieldSignature(proxy_box.DecorationPosition, () => ({
    __proto__: dart.getFields(proxy_box.DecorationPosition.__proto__),
    index: dart.finalFieldType(core.int),
    [_name$]: dart.finalFieldType(core.String)
  }));
  dart.defineExtensionMethods(proxy_box.DecorationPosition, ['toString']);
  proxy_box.DecorationPosition.background = C[20] || CT.C20;
  proxy_box.DecorationPosition.foreground = C[21] || CT.C21;
  proxy_box.DecorationPosition.values = C[22] || CT.C22;
  var ImageConfiguration_platform = dart.privateName(image_provider, "ImageConfiguration.platform");
  var ImageConfiguration_size = dart.privateName(image_provider, "ImageConfiguration.size");
  var ImageConfiguration_textDirection = dart.privateName(image_provider, "ImageConfiguration.textDirection");
  var ImageConfiguration_locale = dart.privateName(image_provider, "ImageConfiguration.locale");
  var ImageConfiguration_devicePixelRatio = dart.privateName(image_provider, "ImageConfiguration.devicePixelRatio");
  var ImageConfiguration_bundle = dart.privateName(image_provider, "ImageConfiguration.bundle");
  var _painter = dart.privateName(proxy_box, "_painter");
  var _decoration = dart.privateName(proxy_box, "_decoration");
  var _position = dart.privateName(proxy_box, "_position");
  var _configuration = dart.privateName(proxy_box, "_configuration");
  proxy_box.RenderDecoratedBox = class RenderDecoratedBox extends proxy_box.RenderProxyBox {
    get decoration() {
      return this[_decoration];
    }
    set decoration(value) {
      let t1;
      if (value == null) dart.nullFailed(I[0], 2079, 29, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 2080, 12, "value != null");
      if (dart.equals(value, this[_decoration])) return;
      t1 = this[_painter];
      t1 == null ? null : t1.dispose();
      this[_painter] = null;
      this[_decoration] = value;
      this.markNeedsPaint();
    }
    get position() {
      return this[_position];
    }
    set position(value) {
      if (value == null) dart.nullFailed(I[0], 2092, 35, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 2093, 12, "value != null");
      if (value == this[_position]) return;
      this[_position] = value;
      this.markNeedsPaint();
    }
    get configuration() {
      return this[_configuration];
    }
    set configuration(value) {
      if (value == null) dart.nullFailed(I[0], 2108, 40, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 2109, 12, "value != null");
      if (dart.equals(value, this[_configuration])) return;
      this[_configuration] = value;
      this.markNeedsPaint();
    }
    detach() {
      let t1;
      t1 = this[_painter];
      t1 == null ? null : t1.dispose();
      this[_painter] = null;
      super.detach();
      this.markNeedsPaint();
    }
    hitTestSelf(position) {
      if (position == null) dart.nullFailed(I[0], 2130, 27, "position");
      return this[_decoration].hitTest(this.size, position, {textDirection: this.configuration.textDirection});
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 2135, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 2135, 46, "offset");
      if (!(this.size.width != null)) dart.assertFailed(null, I[0], 2136, 12, "size.width != null");
      if (!(this.size.height != null)) dart.assertFailed(null, I[0], 2137, 12, "size.height != null");
      this[_painter] == null ? this[_painter] = this[_decoration].createBoxPainter(dart.bind(this, 'markNeedsPaint')) : null;
      let filledConfiguration = this.configuration.copyWith({size: this.size});
      if (this.position == proxy_box.DecorationPosition.background) {
        let debugSaveCount = null;
        if (!dart.test(dart.fn(() => {
          debugSaveCount = context.canvas.getSaveCount();
          return true;
        }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 2142, 14, "() {\r\n        debugSaveCount = context.canvas.getSaveCount();\r\n        return true;\r\n      }()");
        dart.nullCheck(this[_painter]).paint(context.canvas, offset, filledConfiguration);
        if (!dart.test(dart.fn(() => {
          if (debugSaveCount != context.canvas.getSaveCount()) {
            dart.throw(new assertions.FlutterError.fromParts(T$.JSArrayOfDiagnosticsNode().of([new assertions.ErrorSummary.new(dart.str(dart.runtimeType(this[_decoration])) + " painter had mismatching save and restore calls."), new assertions.ErrorDescription.new("Before painting the decoration, the canvas save count was " + dart.str(debugSaveCount) + ". " + "After painting it, the canvas save count was " + dart.str(context.canvas.getSaveCount()) + ". " + "Every call to save() or saveLayer() must be matched by a call to restore()."), new (T$.DiagnosticsPropertyOfDecoration()).new("The decoration was", this.decoration, {style: diagnostics.DiagnosticsTreeStyle.errorProperty}), new (T$.DiagnosticsPropertyOfBoxPainter()).new("The painter was", this[_painter], {style: diagnostics.DiagnosticsTreeStyle.errorProperty})])));
          }
          return true;
        }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 2147, 14, "() {\r\n        if (debugSaveCount != context.canvas.getSaveCount()) {\r\n          throw FlutterError.fromParts(<DiagnosticsNode>[\r\n            ErrorSummary('${_decoration.runtimeType} painter had mismatching save and restore calls.'),\r\n            ErrorDescription(\r\n              'Before painting the decoration, the canvas save count was $debugSaveCount. '\r\n              'After painting it, the canvas save count was ${context.canvas.getSaveCount()}. '\r\n              'Every call to save() or saveLayer() must be matched by a call to restore().'\r\n            ),\r\n            DiagnosticsProperty<Decoration>('The decoration was', decoration, style: DiagnosticsTreeStyle.errorProperty),\r\n            DiagnosticsProperty<BoxPainter>('The painter was', _painter, style: DiagnosticsTreeStyle.errorProperty),\r\n          ]);\r\n        }\r\n        return true;\r\n      }()");
        if (dart.test(this.decoration.isComplex)) context.setIsComplexHint();
      }
      super.paint(context, offset);
      if (this.position == proxy_box.DecorationPosition.foreground) {
        dart.nullCheck(this[_painter]).paint(context.canvas, offset, filledConfiguration);
        if (dart.test(this.decoration.isComplex)) context.setIsComplexHint();
      }
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 2174, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(this[_decoration].toDiagnosticsNode({name: "decoration"}));
      properties.add(new (T$.DiagnosticsPropertyOfImageConfiguration()).new("configuration", this.configuration));
    }
  };
  (proxy_box.RenderDecoratedBox.new = function(opts) {
    let decoration = opts && 'decoration' in opts ? opts.decoration : null;
    if (decoration == null) dart.nullFailed(I[0], 2060, 25, "decoration");
    let position = opts && 'position' in opts ? opts.position : C[20] || CT.C20;
    if (position == null) dart.nullFailed(I[0], 2061, 24, "position");
    let configuration = opts && 'configuration' in opts ? opts.configuration : C[23] || CT.C23;
    if (configuration == null) dart.nullFailed(I[0], 2062, 24, "configuration");
    let child = opts && 'child' in opts ? opts.child : null;
    this[_painter] = null;
    if (!(decoration != null)) dart.assertFailed(null, I[0], 2064, 15, "decoration != null");
    if (!(position != null)) dart.assertFailed(null, I[0], 2065, 15, "position != null");
    if (!(configuration != null)) dart.assertFailed(null, I[0], 2066, 15, "configuration != null");
    this[_decoration] = decoration;
    this[_position] = position;
    this[_configuration] = configuration;
    proxy_box.RenderDecoratedBox.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderDecoratedBox.prototype;
  dart.addTypeTests(proxy_box.RenderDecoratedBox);
  dart.addTypeCaches(proxy_box.RenderDecoratedBox);
  dart.setGetterSignature(proxy_box.RenderDecoratedBox, () => ({
    __proto__: dart.getGetters(proxy_box.RenderDecoratedBox.__proto__),
    decoration: decoration.Decoration,
    position: proxy_box.DecorationPosition,
    configuration: image_provider.ImageConfiguration
  }));
  dart.setSetterSignature(proxy_box.RenderDecoratedBox, () => ({
    __proto__: dart.getSetters(proxy_box.RenderDecoratedBox.__proto__),
    decoration: decoration.Decoration,
    position: proxy_box.DecorationPosition,
    configuration: image_provider.ImageConfiguration
  }));
  dart.setLibraryUri(proxy_box.RenderDecoratedBox, I[1]);
  dart.setFieldSignature(proxy_box.RenderDecoratedBox, () => ({
    __proto__: dart.getFields(proxy_box.RenderDecoratedBox.__proto__),
    [_painter]: dart.fieldType(dart.nullable(decoration.BoxPainter)),
    [_decoration]: dart.fieldType(decoration.Decoration),
    [_position]: dart.fieldType(proxy_box.DecorationPosition),
    [_configuration]: dart.fieldType(image_provider.ImageConfiguration)
  }));
  var transformHitTests$ = dart.privateName(proxy_box, "RenderTransform.transformHitTests");
  var _origin = dart.privateName(proxy_box, "_origin");
  var _alignment = dart.privateName(proxy_box, "_alignment");
  var _textDirection = dart.privateName(proxy_box, "_textDirection");
  var _transform = dart.privateName(proxy_box, "_transform");
  var _effectiveTransform = dart.privateName(proxy_box, "_effectiveTransform");
  proxy_box.RenderTransform = class RenderTransform extends proxy_box.RenderProxyBox {
    get transformHitTests() {
      return this[transformHitTests$];
    }
    set transformHitTests(value) {
      this[transformHitTests$] = value;
    }
    get origin() {
      return this[_origin];
    }
    set origin(value) {
      if (dart.equals(this[_origin], value)) return;
      this[_origin] = value;
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    get alignment() {
      return this[_alignment];
    }
    set alignment(value) {
      if (dart.equals(this[_alignment], value)) return;
      this[_alignment] = value;
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    get textDirection() {
      return this[_textDirection];
    }
    set textDirection(value) {
      if (this[_textDirection] == value) return;
      this[_textDirection] = value;
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    set transform(value) {
      if (value == null) dart.nullFailed(I[0], 2263, 25, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 2264, 12, "value != null");
      if (dart.equals(this[_transform], value)) return;
      this[_transform] = vector_math_64.Matrix4.copy(value);
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    setIdentity() {
      dart.nullCheck(this[_transform]).setIdentity();
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    rotateX(radians) {
      if (radians == null) dart.nullFailed(I[0], 2280, 23, "radians");
      dart.nullCheck(this[_transform]).rotateX(radians);
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    rotateY(radians) {
      if (radians == null) dart.nullFailed(I[0], 2287, 23, "radians");
      dart.nullCheck(this[_transform]).rotateY(radians);
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    rotateZ(radians) {
      if (radians == null) dart.nullFailed(I[0], 2294, 23, "radians");
      dart.nullCheck(this[_transform]).rotateZ(radians);
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    translate(x, y = 0, z = 0) {
      if (x == null) dart.nullFailed(I[0], 2301, 25, "x");
      if (y == null) dart.nullFailed(I[0], 2301, 37, "y");
      if (z == null) dart.nullFailed(I[0], 2301, 53, "z");
      dart.nullCheck(this[_transform]).translate(x, y, z);
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    scale(x, y = null, z = null) {
      if (x == null) dart.nullFailed(I[0], 2308, 21, "x");
      dart.nullCheck(this[_transform]).scale(x, y, z);
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    get [_effectiveTransform]() {
      let t1;
      let resolvedAlignment = (t1 = this.alignment, t1 == null ? null : t1.resolve(this.textDirection));
      if (this[_origin] == null && resolvedAlignment == null) return this[_transform];
      let result = vector_math_64.Matrix4.identity();
      if (this[_origin] != null) result.translate(dart.nullCheck(this[_origin]).dx, dart.nullCheck(this[_origin]).dy);
      let translation = null;
      if (resolvedAlignment != null) {
        translation = resolvedAlignment.alongSize(this.size);
        result.translate(translation.dx, translation.dy);
      }
      result.multiply(dart.nullCheck(this[_transform]));
      if (resolvedAlignment != null) result.translate(-dart.notNull(dart.nullCheck(translation).dx), -dart.notNull(translation.dy));
      if (this[_origin] != null) result.translate(-dart.notNull(dart.nullCheck(this[_origin]).dx), -dart.notNull(dart.nullCheck(this[_origin]).dy));
      return result;
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 2335, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 2335, 59, "position");
      return this.hitTestChildren(result, {position: position});
    }
    hitTestChildren(result, opts) {
      if (result == null) dart.nullFailed(I[0], 2344, 41, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 2344, 67, "position");
      if (!(!dart.test(this.transformHitTests) || this[_effectiveTransform] != null)) dart.assertFailed(null, I[0], 2345, 12, "!transformHitTests || _effectiveTransform != null");
      return result.addWithPaintTransform({transform: dart.test(this.transformHitTests) ? this[_effectiveTransform] : null, position: position, hitTest: dart.fn((result, position) => {
          if (result == null) dart.nullFailed(I[0], 2349, 34, "result");
          return super.hitTestChildren(result, {position: dart.nullCheck(position)});
        }, T$.BoxHitTestResultAndOffsetNTobool())});
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 2356, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 2356, 46, "offset");
      if (this.child != null) {
        let transform = dart.nullCheck(this[_effectiveTransform]);
        let childOffset = matrix_utils.MatrixUtils.getAsTranslation(transform);
        if (childOffset == null) {
          this.layer = context.pushTransform(this.needsCompositing, offset, transform, dart.bind(this, 'paint', super.paint), {oldLayer: T$.TransformLayerN().as(this.layer)});
        } else {
          super.paint(context, offset['+'](childOffset));
          this.layer = null;
        }
      }
    }
    applyPaintTransform(child, transform) {
      box.RenderBox.as(child);
      if (child == null) dart.nullFailed(I[0], 2376, 38, "child");
      if (transform == null) dart.nullFailed(I[0], 2376, 53, "transform");
      transform.multiply(dart.nullCheck(this[_effectiveTransform]));
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 2381, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new matrix_utils.TransformProperty.new("transform matrix", this[_transform]));
      properties.add(new (T$.DiagnosticsPropertyOfOffset()).new("origin", this.origin));
      properties.add(new (T$.DiagnosticsPropertyOfAlignmentGeometry()).new("alignment", this.alignment));
      properties.add(new (T$.EnumPropertyOfTextDirection()).new("textDirection", this.textDirection, {defaultValue: null}));
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("transformHitTests", this.transformHitTests));
    }
  };
  (proxy_box.RenderTransform.new = function(opts) {
    let transform = opts && 'transform' in opts ? opts.transform : null;
    if (transform == null) dart.nullFailed(I[0], 2187, 22, "transform");
    let origin = opts && 'origin' in opts ? opts.origin : null;
    let alignment = opts && 'alignment' in opts ? opts.alignment : null;
    let textDirection = opts && 'textDirection' in opts ? opts.textDirection : null;
    let transformHitTests = opts && 'transformHitTests' in opts ? opts.transformHitTests : true;
    if (transformHitTests == null) dart.nullFailed(I[0], 2191, 10, "transformHitTests");
    let child = opts && 'child' in opts ? opts.child : null;
    this[_origin] = null;
    this[_alignment] = null;
    this[_textDirection] = null;
    this[_transform] = null;
    this[transformHitTests$] = transformHitTests;
    if (!(transform != null)) dart.assertFailed(null, I[0], 2193, 15, "transform != null");
    proxy_box.RenderTransform.__proto__.new.call(this, child);
    this.transform = transform;
    this.alignment = alignment;
    this.textDirection = textDirection;
    this.origin = origin;
  }).prototype = proxy_box.RenderTransform.prototype;
  dart.addTypeTests(proxy_box.RenderTransform);
  dart.addTypeCaches(proxy_box.RenderTransform);
  dart.setMethodSignature(proxy_box.RenderTransform, () => ({
    __proto__: dart.getMethods(proxy_box.RenderTransform.__proto__),
    setIdentity: dart.fnType(dart.void, []),
    rotateX: dart.fnType(dart.void, [core.double]),
    rotateY: dart.fnType(dart.void, [core.double]),
    rotateZ: dart.fnType(dart.void, [core.double]),
    translate: dart.fnType(dart.void, [core.double], [core.double, core.double]),
    scale: dart.fnType(dart.void, [core.double], [dart.nullable(core.double), dart.nullable(core.double)])
  }));
  dart.setGetterSignature(proxy_box.RenderTransform, () => ({
    __proto__: dart.getGetters(proxy_box.RenderTransform.__proto__),
    origin: dart.nullable(ui.Offset),
    alignment: dart.nullable(alignment.AlignmentGeometry),
    textDirection: dart.nullable(ui.TextDirection),
    [_effectiveTransform]: dart.nullable(vector_math_64.Matrix4)
  }));
  dart.setSetterSignature(proxy_box.RenderTransform, () => ({
    __proto__: dart.getSetters(proxy_box.RenderTransform.__proto__),
    origin: dart.nullable(ui.Offset),
    alignment: dart.nullable(alignment.AlignmentGeometry),
    textDirection: dart.nullable(ui.TextDirection),
    transform: vector_math_64.Matrix4
  }));
  dart.setLibraryUri(proxy_box.RenderTransform, I[1]);
  dart.setFieldSignature(proxy_box.RenderTransform, () => ({
    __proto__: dart.getFields(proxy_box.RenderTransform.__proto__),
    [_origin]: dart.fieldType(dart.nullable(ui.Offset)),
    [_alignment]: dart.fieldType(dart.nullable(alignment.AlignmentGeometry)),
    [_textDirection]: dart.fieldType(dart.nullable(ui.TextDirection)),
    transformHitTests: dart.fieldType(core.bool),
    [_transform]: dart.fieldType(dart.nullable(vector_math_64.Matrix4))
  }));
  var _name$1 = dart.privateName(box_fit, "_name");
  var Alignment_y = dart.privateName(alignment, "Alignment.y");
  var Alignment_x = dart.privateName(alignment, "Alignment.x");
  var _resolvedAlignment = dart.privateName(proxy_box, "_resolvedAlignment");
  var _hasVisualOverflow = dart.privateName(proxy_box, "_hasVisualOverflow");
  var _fit = dart.privateName(proxy_box, "_fit");
  var _resolve = dart.privateName(proxy_box, "_resolve");
  var _markNeedResolution = dart.privateName(proxy_box, "_markNeedResolution");
  var _fitAffectsLayout = dart.privateName(proxy_box, "_fitAffectsLayout");
  var _clearPaintData = dart.privateName(proxy_box, "_clearPaintData");
  var BoxConstraints_maxHeight = dart.privateName(box, "BoxConstraints.maxHeight");
  var BoxConstraints_minHeight = dart.privateName(box, "BoxConstraints.minHeight");
  var BoxConstraints_maxWidth = dart.privateName(box, "BoxConstraints.maxWidth");
  var BoxConstraints_minWidth = dart.privateName(box, "BoxConstraints.minWidth");
  var _updatePaintData = dart.privateName(proxy_box, "_updatePaintData");
  var _paintChildWithTransform = dart.privateName(proxy_box, "_paintChildWithTransform");
  proxy_box.RenderFittedBox = class RenderFittedBox extends proxy_box.RenderProxyBox {
    [_resolve]() {
      if (this[_resolvedAlignment] != null) return;
      this[_resolvedAlignment] = this.alignment.resolve(this.textDirection);
    }
    [_markNeedResolution]() {
      this[_resolvedAlignment] = null;
      this.markNeedsPaint();
    }
    [_fitAffectsLayout](fit) {
      if (fit == null) dart.nullFailed(I[0], 2424, 33, "fit");
      switch (fit) {
        case C[26] || CT.C26:
        {
          return true;
        }
        default:
        {
          return false;
        }
      }
    }
    get fit() {
      return this[_fit];
    }
    set fit(value) {
      if (value == null) dart.nullFailed(I[0], 2436, 18, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 2437, 12, "value != null");
      if (this[_fit] == value) return;
      let lastFit = this[_fit];
      this[_fit] = value;
      if (dart.test(this[_fitAffectsLayout](lastFit)) || dart.test(this[_fitAffectsLayout](value))) {
        this.markNeedsLayout();
      } else {
        this[_clearPaintData]();
        this.markNeedsPaint();
      }
    }
    get alignment() {
      return this[_alignment];
    }
    set alignment(value) {
      if (value == null) dart.nullFailed(I[0], 2460, 35, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 2461, 12, "value != null");
      if (dart.equals(this[_alignment], value)) return;
      this[_alignment] = value;
      this[_clearPaintData]();
      this[_markNeedResolution]();
    }
    get textDirection() {
      return this[_textDirection];
    }
    set textDirection(value) {
      if (this[_textDirection] == value) return;
      this[_textDirection] = value;
      this[_clearPaintData]();
      this[_markNeedResolution]();
    }
    computeDryLayout(constraints) {
      if (constraints == null) dart.nullFailed(I[0], 2486, 40, "constraints");
      if (this.child != null) {
        let childSize = dart.nullCheck(this.child).getDryLayout(C[27] || CT.C27);
        let invalidChildSize = false;
        if (!dart.test(dart.fn(() => {
          if (dart.test(object.RenderObject.debugCheckingIntrinsics) && dart.notNull(childSize.width) * dart.notNull(childSize.height) === 0.0) {
            invalidChildSize = true;
          }
          return true;
        }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 2495, 14, "() {\r\n        if (RenderObject.debugCheckingIntrinsics && childSize.width * childSize.height == 0.0) {\r\n          invalidChildSize = true;\r\n        }\r\n        return true;\r\n      }()");
        if (invalidChildSize) {
          if (!dart.test(this.debugCannotComputeDryLayout({reason: "Child provided invalid size of " + dart.str(childSize) + "."}))) dart.assertFailed(null, I[0], 2502, 16, "debugCannotComputeDryLayout(\r\n          reason: 'Child provided invalid size of $childSize.',\r\n        )");
          return ui.Size.zero;
        }
        switch (this.fit) {
          case C[26] || CT.C26:
          {
            let sizeConstraints = constraints.loosen();
            let unconstrainedSize = sizeConstraints.constrainSizeAndAttemptToPreserveAspectRatio(childSize);
            return constraints.constrain(unconstrainedSize);
          }
          default:
          {
            return constraints.constrainSizeAndAttemptToPreserveAspectRatio(childSize);
          }
        }
      } else {
        return constraints.smallest;
      }
    }
    performLayout() {
      if (this.child != null) {
        dart.nullCheck(this.child).layout(C[27] || CT.C27, {parentUsesSize: true});
        switch (this.fit) {
          case C[26] || CT.C26:
          {
            let sizeConstraints = this.constraints.loosen();
            let unconstrainedSize = sizeConstraints.constrainSizeAndAttemptToPreserveAspectRatio(dart.nullCheck(this.child).size);
            this.size = this.constraints.constrain(unconstrainedSize);
            break;
          }
          default:
          {
            this.size = this.constraints.constrainSizeAndAttemptToPreserveAspectRatio(dart.nullCheck(this.child).size);
            break;
          }
        }
        this[_clearPaintData]();
      } else {
        this.size = this.constraints.smallest;
      }
    }
    get clipBehavior() {
      return this[_clipBehavior];
    }
    set clipBehavior(value) {
      if (value == null) dart.nullFailed(I[0], 2549, 25, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 2550, 12, "value != null");
      if (value != this[_clipBehavior]) {
        this[_clipBehavior] = value;
        this.markNeedsPaint();
        this.markNeedsSemanticsUpdate();
      }
    }
    [_clearPaintData]() {
      this[_hasVisualOverflow] = null;
      this[_transform] = null;
    }
    [_updatePaintData]() {
      let t1;
      if (this[_transform] != null) return;
      if (this.child == null) {
        this[_hasVisualOverflow] = false;
        this[_transform] = vector_math_64.Matrix4.identity();
      } else {
        this[_resolve]();
        let childSize = dart.nullCheck(this.child).size;
        let sizes = box_fit.applyBoxFit(this[_fit], childSize, this.size);
        let scaleX = dart.notNull(sizes.destination.width) / dart.notNull(sizes.source.width);
        let scaleY = dart.notNull(sizes.destination.height) / dart.notNull(sizes.source.height);
        let sourceRect = dart.nullCheck(this[_resolvedAlignment]).inscribe(sizes.source, ui.Offset.zero['&'](childSize));
        let destinationRect = dart.nullCheck(this[_resolvedAlignment]).inscribe(sizes.destination, ui.Offset.zero['&'](this.size));
        this[_hasVisualOverflow] = dart.notNull(sourceRect.width) < dart.notNull(childSize.width) || dart.notNull(sourceRect.height) < dart.notNull(childSize.height);
        if (!(scaleX[$isFinite] && scaleY[$isFinite])) dart.assertFailed(null, I[0], 2579, 14, "scaleX.isFinite && scaleY.isFinite");
        this[_transform] = (t1 = vector_math_64.Matrix4.translationValues(destinationRect.left, destinationRect.top, 0.0), (() => {
          t1.scale(scaleX, scaleY, 1.0);
          t1.translate(-dart.notNull(sourceRect.left), -dart.notNull(sourceRect.top));
          return t1;
        })());
        if (!dart.test(dart.nullCheck(this[_transform]).storage[$every](dart.fn(value => {
          if (value == null) dart.nullFailed(I[0], 2583, 48, "value");
          return value[$isFinite];
        }, T$.doubleTobool())))) dart.assertFailed(null, I[0], 2583, 14, "_transform!.storage.every((double value) => value.isFinite)");
      }
    }
    [_paintChildWithTransform](context, offset) {
      if (context == null) dart.nullFailed(I[0], 2587, 60, "context");
      if (offset == null) dart.nullFailed(I[0], 2587, 76, "offset");
      let childOffset = matrix_utils.MatrixUtils.getAsTranslation(dart.nullCheck(this[_transform]));
      if (childOffset == null)
        return context.pushTransform(this.needsCompositing, offset, dart.nullCheck(this[_transform]), dart.bind(this, 'paint', super.paint), {oldLayer: layer.TransformLayer.is(this.layer) ? layer.TransformLayer.as(dart.nullCheck(this.layer)) : null});
      else
        super.paint(context, offset['+'](childOffset));
      return null;
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 2598, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 2598, 46, "offset");
      if (dart.test(this.size.isEmpty) || dart.test(dart.nullCheck(this.child).size.isEmpty)) return;
      this[_updatePaintData]();
      if (this.child != null) {
        if (dart.nullCheck(this[_hasVisualOverflow]) && this.clipBehavior != ui.Clip.none)
          this.layer = context.pushClipRect(this.needsCompositing, offset, ui.Offset.zero['&'](this.size), dart.bind(this, _paintChildWithTransform), {oldLayer: layer.ClipRectLayer.is(this.layer) ? layer.ClipRectLayer.as(dart.nullCheck(this.layer)) : null, clipBehavior: this.clipBehavior});
        else
          this.layer = this[_paintChildWithTransform](context, offset);
      }
    }
    hitTestChildren(result, opts) {
      let t1;
      if (result == null) dart.nullFailed(I[0], 2612, 41, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 2612, 67, "position");
      if (dart.test(this.size.isEmpty) || (t1 = this.child, t1 == null ? null : t1.size.isEmpty) === true) return false;
      this[_updatePaintData]();
      return result.addWithPaintTransform({transform: this[_transform], position: position, hitTest: dart.fn((result, position) => {
          if (result == null) dart.nullFailed(I[0], 2619, 34, "result");
          return super.hitTestChildren(result, {position: dart.nullCheck(position)});
        }, T$.BoxHitTestResultAndOffsetNTobool())});
    }
    applyPaintTransform(child, transform) {
      box.RenderBox.as(child);
      if (child == null) dart.nullFailed(I[0], 2626, 38, "child");
      if (transform == null) dart.nullFailed(I[0], 2626, 53, "transform");
      if (dart.test(this.size.isEmpty) || dart.test(child.size.isEmpty)) {
        transform.setZero();
      } else {
        this[_updatePaintData]();
        transform.multiply(dart.nullCheck(this[_transform]));
      }
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 2636, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.EnumPropertyOfBoxFit()).new("fit", this.fit));
      properties.add(new (T$.DiagnosticsPropertyOfAlignmentGeometry()).new("alignment", this.alignment));
      properties.add(new (T$.EnumPropertyOfTextDirection()).new("textDirection", this.textDirection, {defaultValue: null}));
    }
  };
  (proxy_box.RenderFittedBox.new = function(opts) {
    let fit = opts && 'fit' in opts ? opts.fit : C[24] || CT.C24;
    if (fit == null) dart.nullFailed(I[0], 2397, 12, "fit");
    let alignment = opts && 'alignment' in opts ? opts.alignment : C[25] || CT.C25;
    if (alignment == null) dart.nullFailed(I[0], 2398, 23, "alignment");
    let textDirection = opts && 'textDirection' in opts ? opts.textDirection : null;
    let child = opts && 'child' in opts ? opts.child : null;
    let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[16] || CT.C16;
    if (clipBehavior == null) dart.nullFailed(I[0], 2401, 10, "clipBehavior");
    this[_resolvedAlignment] = null;
    this[_hasVisualOverflow] = null;
    this[_transform] = null;
    this[_clipBehavior] = ui.Clip.none;
    if (!(fit != null)) dart.assertFailed(null, I[0], 2402, 15, "fit != null");
    if (!(alignment != null)) dart.assertFailed(null, I[0], 2403, 15, "alignment != null");
    if (!(clipBehavior != null)) dart.assertFailed(null, I[0], 2404, 15, "clipBehavior != null");
    this[_fit] = fit;
    this[_alignment] = alignment;
    this[_textDirection] = textDirection;
    this[_clipBehavior] = clipBehavior;
    proxy_box.RenderFittedBox.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderFittedBox.prototype;
  dart.addTypeTests(proxy_box.RenderFittedBox);
  dart.addTypeCaches(proxy_box.RenderFittedBox);
  dart.setMethodSignature(proxy_box.RenderFittedBox, () => ({
    __proto__: dart.getMethods(proxy_box.RenderFittedBox.__proto__),
    [_resolve]: dart.fnType(dart.void, []),
    [_markNeedResolution]: dart.fnType(dart.void, []),
    [_fitAffectsLayout]: dart.fnType(core.bool, [box_fit.BoxFit]),
    [_clearPaintData]: dart.fnType(dart.void, []),
    [_updatePaintData]: dart.fnType(dart.void, []),
    [_paintChildWithTransform]: dart.fnType(dart.nullable(layer.TransformLayer), [object.PaintingContext, ui.Offset])
  }));
  dart.setGetterSignature(proxy_box.RenderFittedBox, () => ({
    __proto__: dart.getGetters(proxy_box.RenderFittedBox.__proto__),
    fit: box_fit.BoxFit,
    alignment: alignment.AlignmentGeometry,
    textDirection: dart.nullable(ui.TextDirection),
    clipBehavior: ui.Clip
  }));
  dart.setSetterSignature(proxy_box.RenderFittedBox, () => ({
    __proto__: dart.getSetters(proxy_box.RenderFittedBox.__proto__),
    fit: box_fit.BoxFit,
    alignment: alignment.AlignmentGeometry,
    textDirection: dart.nullable(ui.TextDirection),
    clipBehavior: ui.Clip
  }));
  dart.setLibraryUri(proxy_box.RenderFittedBox, I[1]);
  dart.setFieldSignature(proxy_box.RenderFittedBox, () => ({
    __proto__: dart.getFields(proxy_box.RenderFittedBox.__proto__),
    [_resolvedAlignment]: dart.fieldType(dart.nullable(alignment.Alignment)),
    [_fit]: dart.fieldType(box_fit.BoxFit),
    [_alignment]: dart.fieldType(alignment.AlignmentGeometry),
    [_textDirection]: dart.fieldType(dart.nullable(ui.TextDirection)),
    [_hasVisualOverflow]: dart.fieldType(dart.nullable(core.bool)),
    [_transform]: dart.fieldType(dart.nullable(vector_math_64.Matrix4)),
    [_clipBehavior]: dart.fieldType(ui.Clip)
  }));
  var transformHitTests$0 = dart.privateName(proxy_box, "RenderFractionalTranslation.transformHitTests");
  var _translation = dart.privateName(proxy_box, "_translation");
  proxy_box.RenderFractionalTranslation = class RenderFractionalTranslation extends proxy_box.RenderProxyBox {
    get transformHitTests() {
      return this[transformHitTests$0];
    }
    set transformHitTests(value) {
      this[transformHitTests$0] = value;
    }
    get translation() {
      return this[_translation];
    }
    set translation(value) {
      if (value == null) dart.nullFailed(I[0], 2671, 26, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 2672, 12, "value != null");
      if (dart.equals(this[_translation], value)) return;
      this[_translation] = value;
      this.markNeedsPaint();
      this.markNeedsSemanticsUpdate();
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 2681, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 2681, 59, "position");
      return this.hitTestChildren(result, {position: position});
    }
    hitTestChildren(result, opts) {
      if (result == null) dart.nullFailed(I[0], 2698, 41, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 2698, 67, "position");
      if (!!dart.test(this.debugNeedsLayout)) dart.assertFailed(null, I[0], 2699, 12, "!debugNeedsLayout");
      return result.addWithPaintOffset({offset: dart.test(this.transformHitTests) ? new ui.Offset.new(dart.notNull(this.translation.dx) * dart.notNull(this.size.width), dart.notNull(this.translation.dy) * dart.notNull(this.size.height)) : null, position: position, hitTest: dart.fn((result, position) => {
          if (result == null) dart.nullFailed(I[0], 2705, 34, "result");
          return super.hitTestChildren(result, {position: dart.nullCheck(position)});
        }, T$.BoxHitTestResultAndOffsetNTobool())});
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 2712, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 2712, 46, "offset");
      if (!!dart.test(this.debugNeedsLayout)) dart.assertFailed(null, I[0], 2713, 12, "!debugNeedsLayout");
      if (this.child != null) {
        super.paint(context, new ui.Offset.new(dart.notNull(offset.dx) + dart.notNull(this.translation.dx) * dart.notNull(this.size.width), dart.notNull(offset.dy) + dart.notNull(this.translation.dy) * dart.notNull(this.size.height)));
      }
    }
    applyPaintTransform(child, transform) {
      box.RenderBox.as(child);
      if (child == null) dart.nullFailed(I[0], 2723, 38, "child");
      if (transform == null) dart.nullFailed(I[0], 2723, 53, "transform");
      transform.translate(dart.notNull(this.translation.dx) * dart.notNull(this.size.width), dart.notNull(this.translation.dy) * dart.notNull(this.size.height));
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 2731, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfOffset()).new("translation", this.translation));
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("transformHitTests", this.transformHitTests));
    }
  };
  (proxy_box.RenderFractionalTranslation.new = function(opts) {
    let translation = opts && 'translation' in opts ? opts.translation : null;
    if (translation == null) dart.nullFailed(I[0], 2658, 21, "translation");
    let transformHitTests = opts && 'transformHitTests' in opts ? opts.transformHitTests : true;
    if (transformHitTests == null) dart.nullFailed(I[0], 2659, 10, "transformHitTests");
    let child = opts && 'child' in opts ? opts.child : null;
    this[transformHitTests$0] = transformHitTests;
    if (!(translation != null)) dart.assertFailed(null, I[0], 2661, 15, "translation != null");
    this[_translation] = translation;
    proxy_box.RenderFractionalTranslation.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderFractionalTranslation.prototype;
  dart.addTypeTests(proxy_box.RenderFractionalTranslation);
  dart.addTypeCaches(proxy_box.RenderFractionalTranslation);
  dart.setGetterSignature(proxy_box.RenderFractionalTranslation, () => ({
    __proto__: dart.getGetters(proxy_box.RenderFractionalTranslation.__proto__),
    translation: ui.Offset
  }));
  dart.setSetterSignature(proxy_box.RenderFractionalTranslation, () => ({
    __proto__: dart.getSetters(proxy_box.RenderFractionalTranslation.__proto__),
    translation: ui.Offset
  }));
  dart.setLibraryUri(proxy_box.RenderFractionalTranslation, I[1]);
  dart.setFieldSignature(proxy_box.RenderFractionalTranslation, () => ({
    __proto__: dart.getFields(proxy_box.RenderFractionalTranslation.__proto__),
    [_translation]: dart.fieldType(ui.Offset),
    transformHitTests: dart.fieldType(core.bool)
  }));
  var onPointerDown$ = dart.privateName(proxy_box, "RenderPointerListener.onPointerDown");
  var onPointerMove$ = dart.privateName(proxy_box, "RenderPointerListener.onPointerMove");
  var onPointerUp$ = dart.privateName(proxy_box, "RenderPointerListener.onPointerUp");
  var onPointerHover$ = dart.privateName(proxy_box, "RenderPointerListener.onPointerHover");
  var onPointerCancel$ = dart.privateName(proxy_box, "RenderPointerListener.onPointerCancel");
  var onPointerSignal$ = dart.privateName(proxy_box, "RenderPointerListener.onPointerSignal");
  proxy_box.RenderPointerListener = class RenderPointerListener extends proxy_box.RenderProxyBoxWithHitTestBehavior {
    get onPointerDown() {
      return this[onPointerDown$];
    }
    set onPointerDown(value) {
      this[onPointerDown$] = value;
    }
    get onPointerMove() {
      return this[onPointerMove$];
    }
    set onPointerMove(value) {
      this[onPointerMove$] = value;
    }
    get onPointerUp() {
      return this[onPointerUp$];
    }
    set onPointerUp(value) {
      this[onPointerUp$] = value;
    }
    get onPointerHover() {
      return this[onPointerHover$];
    }
    set onPointerHover(value) {
      this[onPointerHover$] = value;
    }
    get onPointerCancel() {
      return this[onPointerCancel$];
    }
    set onPointerCancel(value) {
      this[onPointerCancel$] = value;
    }
    get onPointerSignal() {
      return this[onPointerSignal$];
    }
    set onPointerSignal(value) {
      this[onPointerSignal$] = value;
    }
    computeSizeForNoChild(constraints) {
      if (constraints == null) dart.nullFailed(I[0], 2813, 45, "constraints");
      return constraints.biggest;
    }
    handleEvent(event, entry) {
      let t1, t1$, t1$0, t1$1, t1$2, t1$3;
      if (event == null) dart.nullFailed(I[0], 2818, 33, "event");
      hit_test.HitTestEntry.as(entry);
      if (entry == null) dart.nullFailed(I[0], 2818, 53, "entry");
      if (!dart.test(this.debugHandleEvent(event, entry))) dart.assertFailed(null, I[0], 2819, 12, "debugHandleEvent(event, entry)");
      if (events.PointerDownEvent.is(event)) {
        t1 = this.onPointerDown;
        return t1 == null ? null : t1(event);
      }
      if (events.PointerMoveEvent.is(event)) {
        t1$ = this.onPointerMove;
        return t1$ == null ? null : t1$(event);
      }
      if (events.PointerUpEvent.is(event)) {
        t1$0 = this.onPointerUp;
        return t1$0 == null ? null : t1$0(event);
      }
      if (events.PointerHoverEvent.is(event)) {
        t1$1 = this.onPointerHover;
        return t1$1 == null ? null : t1$1(event);
      }
      if (events.PointerCancelEvent.is(event)) {
        t1$2 = this.onPointerCancel;
        return t1$2 == null ? null : t1$2(event);
      }
      if (events.PointerSignalEvent.is(event)) {
        t1$3 = this.onPointerSignal;
        return t1$3 == null ? null : t1$3(event);
      }
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 2835, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.FlagsSummaryOfFunctionN()).new("listeners", new (T$.IdentityMapOfString$FunctionN()).from(["down", this.onPointerDown, "move", this.onPointerMove, "up", this.onPointerUp, "hover", this.onPointerHover, "cancel", this.onPointerCancel, "signal", this.onPointerSignal]), {ifEmpty: "<none>"}));
    }
  };
  (proxy_box.RenderPointerListener.new = function(opts) {
    let onPointerDown = opts && 'onPointerDown' in opts ? opts.onPointerDown : null;
    let onPointerMove = opts && 'onPointerMove' in opts ? opts.onPointerMove : null;
    let onPointerUp = opts && 'onPointerUp' in opts ? opts.onPointerUp : null;
    let onPointerHover = opts && 'onPointerHover' in opts ? opts.onPointerHover : null;
    let onPointerCancel = opts && 'onPointerCancel' in opts ? opts.onPointerCancel : null;
    let onPointerSignal = opts && 'onPointerSignal' in opts ? opts.onPointerSignal : null;
    let behavior = opts && 'behavior' in opts ? opts.behavior : C[0] || CT.C0;
    if (behavior == null) dart.nullFailed(I[0], 2786, 21, "behavior");
    let child = opts && 'child' in opts ? opts.child : null;
    this[onPointerDown$] = onPointerDown;
    this[onPointerMove$] = onPointerMove;
    this[onPointerUp$] = onPointerUp;
    this[onPointerHover$] = onPointerHover;
    this[onPointerCancel$] = onPointerCancel;
    this[onPointerSignal$] = onPointerSignal;
    proxy_box.RenderPointerListener.__proto__.new.call(this, {behavior: behavior, child: child});
    ;
  }).prototype = proxy_box.RenderPointerListener.prototype;
  dart.addTypeTests(proxy_box.RenderPointerListener);
  dart.addTypeCaches(proxy_box.RenderPointerListener);
  dart.setLibraryUri(proxy_box.RenderPointerListener, I[1]);
  dart.setFieldSignature(proxy_box.RenderPointerListener, () => ({
    __proto__: dart.getFields(proxy_box.RenderPointerListener.__proto__),
    onPointerDown: dart.fieldType(dart.nullable(dart.fnType(dart.void, [events.PointerDownEvent]))),
    onPointerMove: dart.fieldType(dart.nullable(dart.fnType(dart.void, [events.PointerMoveEvent]))),
    onPointerUp: dart.fieldType(dart.nullable(dart.fnType(dart.void, [events.PointerUpEvent]))),
    onPointerHover: dart.fieldType(dart.nullable(dart.fnType(dart.void, [events.PointerHoverEvent]))),
    onPointerCancel: dart.fieldType(dart.nullable(dart.fnType(dart.void, [events.PointerCancelEvent]))),
    onPointerSignal: dart.fieldType(dart.nullable(dart.fnType(dart.void, [events.PointerSignalEvent])))
  }));
  var onEnter$ = dart.privateName(proxy_box, "RenderMouseRegion.onEnter");
  var onHover$ = dart.privateName(proxy_box, "RenderMouseRegion.onHover");
  var onExit$ = dart.privateName(proxy_box, "RenderMouseRegion.onExit");
  var _cursor = dart.privateName(proxy_box, "_cursor");
  var _validForMouseTracker = dart.privateName(proxy_box, "_validForMouseTracker");
  var _opaque = dart.privateName(proxy_box, "_opaque");
  proxy_box.RenderMouseRegion = class RenderMouseRegion extends proxy_box.RenderProxyBox {
    get onEnter() {
      return this[onEnter$];
    }
    set onEnter(value) {
      this[onEnter$] = value;
    }
    get onHover() {
      return this[onHover$];
    }
    set onHover(value) {
      this[onHover$] = value;
    }
    get onExit() {
      return this[onExit$];
    }
    set onExit(value) {
      this[onExit$] = value;
    }
    hitTestSelf(position) {
      if (position == null) dart.nullFailed(I[0], 2893, 27, "position");
      return true;
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 2896, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 2896, 59, "position");
      return dart.test(super.hitTest(result, {position: position})) && dart.test(this[_opaque]);
    }
    handleEvent(event, entry) {
      if (event == null) dart.nullFailed(I[0], 2901, 33, "event");
      hit_test.HitTestEntry.as(entry);
      if (entry == null) dart.nullFailed(I[0], 2901, 53, "entry");
      if (!dart.test(this.debugHandleEvent(event, entry))) dart.assertFailed(null, I[0], 2902, 12, "debugHandleEvent(event, entry)");
      if (this.onHover != null && events.PointerHoverEvent.is(event)) return dart.nullCheck(this.onHover)(event);
    }
    get opaque() {
      return this[_opaque];
    }
    set opaque(value) {
      if (value == null) dart.nullFailed(I[0], 2923, 19, "value");
      if (this[_opaque] != value) {
        this[_opaque] = value;
        this.markNeedsPaint();
      }
    }
    get cursor() {
      return this[_cursor];
    }
    set cursor(value) {
      if (value == null) dart.nullFailed(I[0], 2946, 26, "value");
      if (!dart.equals(this[_cursor], value)) {
        this[_cursor] = value;
        this.markNeedsPaint();
      }
    }
    get validForMouseTracker() {
      return this[_validForMouseTracker];
    }
    attach(owner) {
      object.PipelineOwner.as(owner);
      if (owner == null) dart.nullFailed(I[0], 2960, 29, "owner");
      super.attach(owner);
      this[_validForMouseTracker] = true;
    }
    detach() {
      this[_validForMouseTracker] = false;
      super.detach();
    }
    computeSizeForNoChild(constraints) {
      if (constraints == null) dart.nullFailed(I[0], 2975, 45, "constraints");
      return constraints.biggest;
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 2980, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.FlagsSummaryOfFunctionN()).new("listeners", new (T$.IdentityMapOfString$FunctionN()).from(["enter", this.onEnter, "hover", this.onHover, "exit", this.onExit]), {ifEmpty: "<none>"}));
      properties.add(new (T$.DiagnosticsPropertyOfMouseCursor()).new("cursor", this.cursor, {defaultValue: mouse_cursor.MouseCursor.defer}));
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("opaque", this.opaque, {defaultValue: true}));
      properties.add(new diagnostics.FlagProperty.new("validForMouseTracker", {value: this.validForMouseTracker, defaultValue: true, ifFalse: "invalid for MouseTracker"}));
    }
  };
  (proxy_box.RenderMouseRegion.new = function(opts) {
    let onEnter = opts && 'onEnter' in opts ? opts.onEnter : null;
    let onHover = opts && 'onHover' in opts ? opts.onHover : null;
    let onExit = opts && 'onExit' in opts ? opts.onExit : null;
    let cursor = opts && 'cursor' in opts ? opts.cursor : C[28] || CT.C28;
    if (cursor == null) dart.nullFailed(I[0], 2880, 17, "cursor");
    let validForMouseTracker = opts && 'validForMouseTracker' in opts ? opts.validForMouseTracker : true;
    if (validForMouseTracker == null) dart.nullFailed(I[0], 2881, 10, "validForMouseTracker");
    let opaque = opts && 'opaque' in opts ? opts.opaque : true;
    if (opaque == null) dart.nullFailed(I[0], 2882, 10, "opaque");
    let child = opts && 'child' in opts ? opts.child : null;
    this[onEnter$] = onEnter;
    this[onHover$] = onHover;
    this[onExit$] = onExit;
    if (!(opaque != null)) dart.assertFailed(null, I[0], 2884, 15, "opaque != null");
    if (!(cursor != null)) dart.assertFailed(null, I[0], 2885, 15, "cursor != null");
    this[_cursor] = cursor;
    this[_validForMouseTracker] = validForMouseTracker;
    this[_opaque] = opaque;
    proxy_box.RenderMouseRegion.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderMouseRegion.prototype;
  dart.addTypeTests(proxy_box.RenderMouseRegion);
  dart.addTypeCaches(proxy_box.RenderMouseRegion);
  proxy_box.RenderMouseRegion[dart.implements] = () => [mouse_tracking.MouseTrackerAnnotation];
  dart.setGetterSignature(proxy_box.RenderMouseRegion, () => ({
    __proto__: dart.getGetters(proxy_box.RenderMouseRegion.__proto__),
    opaque: core.bool,
    cursor: mouse_cursor.MouseCursor,
    validForMouseTracker: core.bool
  }));
  dart.setSetterSignature(proxy_box.RenderMouseRegion, () => ({
    __proto__: dart.getSetters(proxy_box.RenderMouseRegion.__proto__),
    opaque: core.bool,
    cursor: mouse_cursor.MouseCursor
  }));
  dart.setLibraryUri(proxy_box.RenderMouseRegion, I[1]);
  dart.setFieldSignature(proxy_box.RenderMouseRegion, () => ({
    __proto__: dart.getFields(proxy_box.RenderMouseRegion.__proto__),
    [_opaque]: dart.fieldType(core.bool),
    onEnter: dart.fieldType(dart.nullable(dart.fnType(dart.void, [events.PointerEnterEvent]))),
    onHover: dart.fieldType(dart.nullable(dart.fnType(dart.void, [events.PointerHoverEvent]))),
    onExit: dart.fieldType(dart.nullable(dart.fnType(dart.void, [events.PointerExitEvent]))),
    [_cursor]: dart.fieldType(mouse_cursor.MouseCursor),
    [_validForMouseTracker]: dart.fieldType(core.bool)
  }));
  var _debugSymmetricPaintCount = dart.privateName(proxy_box, "_debugSymmetricPaintCount");
  var _debugAsymmetricPaintCount = dart.privateName(proxy_box, "_debugAsymmetricPaintCount");
  proxy_box.RenderRepaintBoundary = class RenderRepaintBoundary extends proxy_box.RenderProxyBox {
    get isRepaintBoundary() {
      return true;
    }
    toImage(opts) {
      let pixelRatio = opts && 'pixelRatio' in opts ? opts.pixelRatio : 1;
      if (pixelRatio == null) dart.nullFailed(I[0], 3088, 37, "pixelRatio");
      if (!!dart.test(this.debugNeedsPaint)) dart.assertFailed(null, I[0], 3089, 12, "!debugNeedsPaint");
      let offsetLayer = layer.OffsetLayer.as(dart.nullCheck(this.layer));
      return offsetLayer.toImage(ui.Offset.zero['&'](this.size), {pixelRatio: pixelRatio});
    }
    get debugSymmetricPaintCount() {
      return this[_debugSymmetricPaintCount];
    }
    get debugAsymmetricPaintCount() {
      return this[_debugAsymmetricPaintCount];
    }
    debugResetMetrics() {
      if (!dart.test(dart.fn(() => {
        this[_debugSymmetricPaintCount] = 0;
        this[_debugAsymmetricPaintCount] = 0;
        return true;
      }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 3130, 12, "() {\r\n      _debugSymmetricPaintCount = 0;\r\n      _debugAsymmetricPaintCount = 0;\r\n      return true;\r\n    }()");
    }
    debugRegisterRepaintBoundaryPaint(opts) {
      let includedParent = opts && 'includedParent' in opts ? opts.includedParent : true;
      if (includedParent == null) dart.nullFailed(I[0], 3138, 49, "includedParent");
      let includedChild = opts && 'includedChild' in opts ? opts.includedChild : false;
      if (includedChild == null) dart.nullFailed(I[0], 3138, 77, "includedChild");
      if (!dart.test(dart.fn(() => {
        if (dart.test(includedParent) && dart.test(includedChild))
          this[_debugSymmetricPaintCount] = dart.notNull(this[_debugSymmetricPaintCount]) + 1;
        else
          this[_debugAsymmetricPaintCount] = dart.notNull(this[_debugAsymmetricPaintCount]) + 1;
        return true;
      }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 3139, 12, "() {\r\n      if (includedParent && includedChild)\r\n        _debugSymmetricPaintCount += 1;\r\n      else\r\n        _debugAsymmetricPaintCount += 1;\r\n      return true;\r\n    }()");
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 3149, 56, "properties");
      super.debugFillProperties(properties);
      let inReleaseMode = true;
      if (!dart.test(dart.fn(() => {
        inReleaseMode = false;
        if (dart.notNull(this.debugSymmetricPaintCount) + dart.notNull(this.debugAsymmetricPaintCount) === 0) {
          properties.add(new diagnostics.MessageProperty.new("usefulness ratio", "no metrics collected yet (never painted)"));
        } else {
          let fraction = dart.notNull(this.debugAsymmetricPaintCount) / (dart.notNull(this.debugSymmetricPaintCount) + dart.notNull(this.debugAsymmetricPaintCount));
          let diagnosis = null;
          if (dart.notNull(this.debugSymmetricPaintCount) + dart.notNull(this.debugAsymmetricPaintCount) < 5) {
            diagnosis = "insufficient data to draw conclusion (less than five repaints)";
          } else if (fraction > 0.9) {
            diagnosis = "this is an outstandingly useful repaint boundary and should definitely be kept";
          } else if (fraction > 0.5) {
            diagnosis = "this is a useful repaint boundary and should be kept";
          } else if (fraction > 0.3) {
            diagnosis = "this repaint boundary is probably useful, but maybe it would be more useful in tandem with adding more repaint boundaries elsewhere";
          } else if (fraction > 0.1) {
            diagnosis = "this repaint boundary does sometimes show value, though currently not that often";
          } else if (this.debugAsymmetricPaintCount === 0) {
            diagnosis = "this repaint boundary is astoundingly ineffectual and should be removed";
          } else {
            diagnosis = "this repaint boundary is not very effective and should probably be removed";
          }
          properties.add(new diagnostics.PercentProperty.new("metrics", fraction, {unit: "useful", tooltip: dart.str(this.debugSymmetricPaintCount) + " bad vs " + dart.str(this.debugAsymmetricPaintCount) + " good"}));
          properties.add(new diagnostics.MessageProperty.new("diagnosis", diagnosis));
        }
        return true;
      }, T$.VoidTobool())())) dart.assertFailed(null, I[0], 3152, 12, "() {\r\n      inReleaseMode = false;\r\n      if (debugSymmetricPaintCount + debugAsymmetricPaintCount == 0) {\r\n        properties.add(MessageProperty('usefulness ratio', 'no metrics collected yet (never painted)'));\r\n      } else {\r\n        final double fraction = debugAsymmetricPaintCount / (debugSymmetricPaintCount + debugAsymmetricPaintCount);\r\n        final String diagnosis;\r\n        if (debugSymmetricPaintCount + debugAsymmetricPaintCount < 5) {\r\n          diagnosis = 'insufficient data to draw conclusion (less than five repaints)';\r\n        } else if (fraction > 0.9) {\r\n          diagnosis = 'this is an outstandingly useful repaint boundary and should definitely be kept';\r\n        } else if (fraction > 0.5) {\r\n          diagnosis = 'this is a useful repaint boundary and should be kept';\r\n        } else if (fraction > 0.30) {\r\n          diagnosis = 'this repaint boundary is probably useful, but maybe it would be more useful in tandem with adding more repaint boundaries elsewhere';\r\n        } else if (fraction > 0.1) {\r\n          diagnosis = 'this repaint boundary does sometimes show value, though currently not that often';\r\n        } else if (debugAsymmetricPaintCount == 0) {\r\n          diagnosis = 'this repaint boundary is astoundingly ineffectual and should be removed';\r\n        } else {\r\n          diagnosis = 'this repaint boundary is not very effective and should probably be removed';\r\n        }\r\n        properties.add(PercentProperty('metrics', fraction, unit: 'useful', tooltip: '$debugSymmetricPaintCount bad vs $debugAsymmetricPaintCount good'));\r\n        properties.add(MessageProperty('diagnosis', diagnosis));\r\n      }\r\n      return true;\r\n    }()");
      if (inReleaseMode) properties.add(diagnostics.DiagnosticsNode.message("(run in checked mode to collect repaint boundary statistics)"));
    }
  };
  (proxy_box.RenderRepaintBoundary.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    this[_debugSymmetricPaintCount] = 0;
    this[_debugAsymmetricPaintCount] = 0;
    proxy_box.RenderRepaintBoundary.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderRepaintBoundary.prototype;
  dart.addTypeTests(proxy_box.RenderRepaintBoundary);
  dart.addTypeCaches(proxy_box.RenderRepaintBoundary);
  dart.setMethodSignature(proxy_box.RenderRepaintBoundary, () => ({
    __proto__: dart.getMethods(proxy_box.RenderRepaintBoundary.__proto__),
    toImage: dart.fnType(async.Future$(ui.Image), [], {pixelRatio: core.double}, {}),
    debugResetMetrics: dart.fnType(dart.void, [])
  }));
  dart.setGetterSignature(proxy_box.RenderRepaintBoundary, () => ({
    __proto__: dart.getGetters(proxy_box.RenderRepaintBoundary.__proto__),
    debugSymmetricPaintCount: core.int,
    debugAsymmetricPaintCount: core.int
  }));
  dart.setLibraryUri(proxy_box.RenderRepaintBoundary, I[1]);
  dart.setFieldSignature(proxy_box.RenderRepaintBoundary, () => ({
    __proto__: dart.getFields(proxy_box.RenderRepaintBoundary.__proto__),
    [_debugSymmetricPaintCount]: dart.fieldType(core.int),
    [_debugAsymmetricPaintCount]: dart.fieldType(core.int)
  }));
  var _ignoring = dart.privateName(proxy_box, "_ignoring");
  var _ignoringSemantics = dart.privateName(proxy_box, "_ignoringSemantics");
  var _effectiveIgnoringSemantics = dart.privateName(proxy_box, "_effectiveIgnoringSemantics");
  proxy_box.RenderIgnorePointer = class RenderIgnorePointer extends proxy_box.RenderProxyBox {
    get ignoring() {
      return this[_ignoring];
    }
    set ignoring(value) {
      if (value == null) dart.nullFailed(I[0], 3220, 21, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 3221, 12, "value != null");
      if (value == this[_ignoring]) return;
      this[_ignoring] = value;
      if (this[_ignoringSemantics] == null || !dart.nullCheck(this[_ignoringSemantics])) this.markNeedsSemanticsUpdate();
    }
    get ignoringSemantics() {
      return this[_ignoringSemantics];
    }
    set ignoringSemantics(value) {
      if (value == this[_ignoringSemantics]) return;
      let oldEffectiveValue = this[_effectiveIgnoringSemantics];
      this[_ignoringSemantics] = value;
      if (oldEffectiveValue != this[_effectiveIgnoringSemantics]) this.markNeedsSemanticsUpdate();
    }
    get [_effectiveIgnoringSemantics]() {
      let t1;
      t1 = this.ignoringSemantics;
      return t1 == null ? this.ignoring : t1;
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 3248, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 3248, 59, "position");
      return !dart.test(this.ignoring) && dart.test(super.hitTest(result, {position: position}));
    }
    visitChildrenForSemantics(visitor) {
      if (visitor == null) dart.nullFailed(I[0], 3256, 54, "visitor");
      if (this.child != null && !dart.test(this[_effectiveIgnoringSemantics])) visitor(dart.nullCheck(this.child));
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 3262, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("ignoring", this.ignoring));
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("ignoringSemantics", this[_effectiveIgnoringSemantics], {description: this.ignoringSemantics == null ? "implicitly " + dart.str(this[_effectiveIgnoringSemantics]) : null}));
    }
  };
  (proxy_box.RenderIgnorePointer.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let ignoring = opts && 'ignoring' in opts ? opts.ignoring : true;
    if (ignoring == null) dart.nullFailed(I[0], 3206, 10, "ignoring");
    let ignoringSemantics = opts && 'ignoringSemantics' in opts ? opts.ignoringSemantics : null;
    this[_ignoring] = ignoring;
    this[_ignoringSemantics] = ignoringSemantics;
    proxy_box.RenderIgnorePointer.__proto__.new.call(this, child);
    if (!(this[_ignoring] != null)) dart.assertFailed(null, I[0], 3211, 12, "_ignoring != null");
  }).prototype = proxy_box.RenderIgnorePointer.prototype;
  dart.addTypeTests(proxy_box.RenderIgnorePointer);
  dart.addTypeCaches(proxy_box.RenderIgnorePointer);
  dart.setGetterSignature(proxy_box.RenderIgnorePointer, () => ({
    __proto__: dart.getGetters(proxy_box.RenderIgnorePointer.__proto__),
    ignoring: core.bool,
    ignoringSemantics: dart.nullable(core.bool),
    [_effectiveIgnoringSemantics]: core.bool
  }));
  dart.setSetterSignature(proxy_box.RenderIgnorePointer, () => ({
    __proto__: dart.getSetters(proxy_box.RenderIgnorePointer.__proto__),
    ignoring: core.bool,
    ignoringSemantics: dart.nullable(core.bool)
  }));
  dart.setLibraryUri(proxy_box.RenderIgnorePointer, I[1]);
  dart.setFieldSignature(proxy_box.RenderIgnorePointer, () => ({
    __proto__: dart.getFields(proxy_box.RenderIgnorePointer.__proto__),
    [_ignoring]: dart.fieldType(core.bool),
    [_ignoringSemantics]: dart.fieldType(dart.nullable(core.bool))
  }));
  var _offstage = dart.privateName(proxy_box, "_offstage");
  proxy_box.RenderOffstage = class RenderOffstage extends proxy_box.RenderProxyBox {
    get offstage() {
      return this[_offstage];
    }
    set offstage(value) {
      if (value == null) dart.nullFailed(I[0], 3296, 21, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 3297, 12, "value != null");
      if (value == this[_offstage]) return;
      this[_offstage] = value;
      this.markNeedsLayoutForSizedByParentChange();
    }
    computeMinIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 3305, 42, "height");
      if (dart.test(this.offstage)) return 0.0;
      return super.computeMinIntrinsicWidth(height);
    }
    computeMaxIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[0], 3312, 42, "height");
      if (dart.test(this.offstage)) return 0.0;
      return super.computeMaxIntrinsicWidth(height);
    }
    computeMinIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[0], 3319, 43, "width");
      if (dart.test(this.offstage)) return 0.0;
      return super.computeMinIntrinsicHeight(width);
    }
    computeMaxIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[0], 3326, 43, "width");
      if (dart.test(this.offstage)) return 0.0;
      return super.computeMaxIntrinsicHeight(width);
    }
    computeDistanceToActualBaseline(baseline) {
      if (baseline == null) dart.nullFailed(I[0], 3333, 56, "baseline");
      if (dart.test(this.offstage)) return null;
      return super.computeDistanceToActualBaseline(baseline);
    }
    get sizedByParent() {
      return this.offstage;
    }
    computeDryLayout(constraints) {
      if (constraints == null) dart.nullFailed(I[0], 3343, 40, "constraints");
      if (dart.test(this.offstage)) {
        return constraints.smallest;
      }
      return super.computeDryLayout(constraints);
    }
    performResize() {
      if (!dart.test(this.offstage)) dart.assertFailed(null, I[0], 3353, 12, "offstage");
      super.performResize();
    }
    performLayout() {
      let t1;
      if (dart.test(this.offstage)) {
        t1 = this.child;
        t1 == null ? null : t1.layout(this.constraints);
      } else {
        super.performLayout();
      }
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 3367, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 3367, 59, "position");
      return !dart.test(this.offstage) && dart.test(super.hitTest(result, {position: position}));
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[0], 3372, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 3372, 46, "offset");
      if (dart.test(this.offstage)) return;
      super.paint(context, offset);
    }
    visitChildrenForSemantics(visitor) {
      if (visitor == null) dart.nullFailed(I[0], 3379, 54, "visitor");
      if (dart.test(this.offstage)) return;
      super.visitChildrenForSemantics(visitor);
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 3386, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("offstage", this.offstage));
    }
    debugDescribeChildren() {
      if (this.child == null) return T$.JSArrayOfDiagnosticsNode().of([]);
      return T$.JSArrayOfDiagnosticsNode().of([dart.nullCheck(this.child).toDiagnosticsNode({name: "child", style: dart.test(this.offstage) ? diagnostics.DiagnosticsTreeStyle.offstage : diagnostics.DiagnosticsTreeStyle.sparse})]);
    }
  };
  (proxy_box.RenderOffstage.new = function(opts) {
    let offstage = opts && 'offstage' in opts ? opts.offstage : true;
    if (offstage == null) dart.nullFailed(I[0], 3281, 10, "offstage");
    let child = opts && 'child' in opts ? opts.child : null;
    if (!(offstage != null)) dart.assertFailed(null, I[0], 3283, 15, "offstage != null");
    this[_offstage] = offstage;
    proxy_box.RenderOffstage.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderOffstage.prototype;
  dart.addTypeTests(proxy_box.RenderOffstage);
  dart.addTypeCaches(proxy_box.RenderOffstage);
  dart.setGetterSignature(proxy_box.RenderOffstage, () => ({
    __proto__: dart.getGetters(proxy_box.RenderOffstage.__proto__),
    offstage: core.bool
  }));
  dart.setSetterSignature(proxy_box.RenderOffstage, () => ({
    __proto__: dart.getSetters(proxy_box.RenderOffstage.__proto__),
    offstage: core.bool
  }));
  dart.setLibraryUri(proxy_box.RenderOffstage, I[1]);
  dart.setFieldSignature(proxy_box.RenderOffstage, () => ({
    __proto__: dart.getFields(proxy_box.RenderOffstage.__proto__),
    [_offstage]: dart.fieldType(core.bool)
  }));
  var _absorbing = dart.privateName(proxy_box, "_absorbing");
  proxy_box.RenderAbsorbPointer = class RenderAbsorbPointer extends proxy_box.RenderProxyBox {
    get absorbing() {
      return this[_absorbing];
    }
    set absorbing(value) {
      if (value == null) dart.nullFailed(I[0], 3436, 22, "value");
      if (this[_absorbing] == value) return;
      this[_absorbing] = value;
      if (this.ignoringSemantics == null) this.markNeedsSemanticsUpdate();
    }
    get ignoringSemantics() {
      return this[_ignoringSemantics];
    }
    set ignoringSemantics(value) {
      if (value == this[_ignoringSemantics]) return;
      let oldEffectiveValue = this[_effectiveIgnoringSemantics];
      this[_ignoringSemantics] = value;
      if (oldEffectiveValue != this[_effectiveIgnoringSemantics]) this.markNeedsSemanticsUpdate();
    }
    get [_effectiveIgnoringSemantics]() {
      let t1;
      t1 = this.ignoringSemantics;
      return t1 == null ? this.absorbing : t1;
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 3463, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 3463, 59, "position");
      return dart.test(this.absorbing) ? this.size.contains(position) : super.hitTest(result, {position: position});
    }
    visitChildrenForSemantics(visitor) {
      if (visitor == null) dart.nullFailed(I[0], 3470, 54, "visitor");
      if (this.child != null && !dart.test(this[_effectiveIgnoringSemantics])) visitor(dart.nullCheck(this.child));
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 3476, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("absorbing", this.absorbing));
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("ignoringSemantics", this[_effectiveIgnoringSemantics], {description: this.ignoringSemantics == null ? "implicitly " + dart.str(this[_effectiveIgnoringSemantics]) : null}));
    }
  };
  (proxy_box.RenderAbsorbPointer.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let absorbing = opts && 'absorbing' in opts ? opts.absorbing : true;
    if (absorbing == null) dart.nullFailed(I[0], 3422, 10, "absorbing");
    let ignoringSemantics = opts && 'ignoringSemantics' in opts ? opts.ignoringSemantics : null;
    if (!(absorbing != null)) dart.assertFailed(null, I[0], 3424, 15, "absorbing != null");
    this[_absorbing] = absorbing;
    this[_ignoringSemantics] = ignoringSemantics;
    proxy_box.RenderAbsorbPointer.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderAbsorbPointer.prototype;
  dart.addTypeTests(proxy_box.RenderAbsorbPointer);
  dart.addTypeCaches(proxy_box.RenderAbsorbPointer);
  dart.setGetterSignature(proxy_box.RenderAbsorbPointer, () => ({
    __proto__: dart.getGetters(proxy_box.RenderAbsorbPointer.__proto__),
    absorbing: core.bool,
    ignoringSemantics: dart.nullable(core.bool),
    [_effectiveIgnoringSemantics]: core.bool
  }));
  dart.setSetterSignature(proxy_box.RenderAbsorbPointer, () => ({
    __proto__: dart.getSetters(proxy_box.RenderAbsorbPointer.__proto__),
    absorbing: core.bool,
    ignoringSemantics: dart.nullable(core.bool)
  }));
  dart.setLibraryUri(proxy_box.RenderAbsorbPointer, I[1]);
  dart.setFieldSignature(proxy_box.RenderAbsorbPointer, () => ({
    __proto__: dart.getFields(proxy_box.RenderAbsorbPointer.__proto__),
    [_absorbing]: dart.fieldType(core.bool),
    [_ignoringSemantics]: dart.fieldType(dart.nullable(core.bool))
  }));
  var metaData$ = dart.privateName(proxy_box, "RenderMetaData.metaData");
  proxy_box.RenderMetaData = class RenderMetaData extends proxy_box.RenderProxyBoxWithHitTestBehavior {
    get metaData() {
      return this[metaData$];
    }
    set metaData(value) {
      this[metaData$] = value;
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 3509, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new diagnostics.DiagnosticsProperty.new("metaData", this.metaData));
    }
  };
  (proxy_box.RenderMetaData.new = function(opts) {
    let metaData = opts && 'metaData' in opts ? opts.metaData : null;
    let behavior = opts && 'behavior' in opts ? opts.behavior : C[0] || CT.C0;
    if (behavior == null) dart.nullFailed(I[0], 3501, 21, "behavior");
    let child = opts && 'child' in opts ? opts.child : null;
    this[metaData$] = metaData;
    proxy_box.RenderMetaData.__proto__.new.call(this, {behavior: behavior, child: child});
    ;
  }).prototype = proxy_box.RenderMetaData.prototype;
  dart.addTypeTests(proxy_box.RenderMetaData);
  dart.addTypeCaches(proxy_box.RenderMetaData);
  dart.setLibraryUri(proxy_box.RenderMetaData, I[1]);
  dart.setFieldSignature(proxy_box.RenderMetaData, () => ({
    __proto__: dart.getFields(proxy_box.RenderMetaData.__proto__),
    metaData: dart.fieldType(dart.dynamic)
  }));
  var scrollFactor$ = dart.privateName(proxy_box, "RenderSemanticsGestureHandler.scrollFactor");
  var _validActions = dart.privateName(proxy_box, "_validActions");
  var _onTap = dart.privateName(proxy_box, "_onTap");
  var _onLongPress = dart.privateName(proxy_box, "_onLongPress");
  var _onHorizontalDragUpdate = dart.privateName(proxy_box, "_onHorizontalDragUpdate");
  var _onVerticalDragUpdate = dart.privateName(proxy_box, "_onVerticalDragUpdate");
  var _isValidAction = dart.privateName(proxy_box, "_isValidAction");
  var _performSemanticScrollRight = dart.privateName(proxy_box, "_performSemanticScrollRight");
  var _performSemanticScrollLeft = dart.privateName(proxy_box, "_performSemanticScrollLeft");
  var _performSemanticScrollUp = dart.privateName(proxy_box, "_performSemanticScrollUp");
  var _performSemanticScrollDown = dart.privateName(proxy_box, "_performSemanticScrollDown");
  proxy_box.RenderSemanticsGestureHandler = class RenderSemanticsGestureHandler extends proxy_box.RenderProxyBox {
    get scrollFactor() {
      return this[scrollFactor$];
    }
    set scrollFactor(value) {
      this[scrollFactor$] = value;
    }
    get validActions() {
      return this[_validActions];
    }
    set validActions(value) {
      if (dart.test(collections.setEquals(ui.SemanticsAction, value, this[_validActions]))) return;
      this[_validActions] = value;
      this.markNeedsSemanticsUpdate();
    }
    get onTap() {
      return this[_onTap];
    }
    set onTap(value) {
      if (dart.equals(this[_onTap], value)) return;
      let hadHandler = this[_onTap] != null;
      this[_onTap] = value;
      if (value != null !== hadHandler) this.markNeedsSemanticsUpdate();
    }
    get onLongPress() {
      return this[_onLongPress];
    }
    set onLongPress(value) {
      if (dart.equals(this[_onLongPress], value)) return;
      let hadHandler = this[_onLongPress] != null;
      this[_onLongPress] = value;
      if (value != null !== hadHandler) this.markNeedsSemanticsUpdate();
    }
    get onHorizontalDragUpdate() {
      return this[_onHorizontalDragUpdate];
    }
    set onHorizontalDragUpdate(value) {
      if (dart.equals(this[_onHorizontalDragUpdate], value)) return;
      let hadHandler = this[_onHorizontalDragUpdate] != null;
      this[_onHorizontalDragUpdate] = value;
      if (value != null !== hadHandler) this.markNeedsSemanticsUpdate();
    }
    get onVerticalDragUpdate() {
      return this[_onVerticalDragUpdate];
    }
    set onVerticalDragUpdate(value) {
      if (dart.equals(this[_onVerticalDragUpdate], value)) return;
      let hadHandler = this[_onVerticalDragUpdate] != null;
      this[_onVerticalDragUpdate] = value;
      if (value != null !== hadHandler) this.markNeedsSemanticsUpdate();
    }
    describeSemanticsConfiguration(config) {
      if (config == null) dart.nullFailed(I[0], 3613, 62, "config");
      super.describeSemanticsConfiguration(config);
      if (this.onTap != null && dart.test(this[_isValidAction](ui.SemanticsAction.tap))) config.onTap = this.onTap;
      if (this.onLongPress != null && dart.test(this[_isValidAction](ui.SemanticsAction.longPress))) config.onLongPress = this.onLongPress;
      if (this.onHorizontalDragUpdate != null) {
        if (dart.test(this[_isValidAction](ui.SemanticsAction.scrollRight))) config.onScrollRight = dart.bind(this, _performSemanticScrollRight);
        if (dart.test(this[_isValidAction](ui.SemanticsAction.scrollLeft))) config.onScrollLeft = dart.bind(this, _performSemanticScrollLeft);
      }
      if (this.onVerticalDragUpdate != null) {
        if (dart.test(this[_isValidAction](ui.SemanticsAction.scrollUp))) config.onScrollUp = dart.bind(this, _performSemanticScrollUp);
        if (dart.test(this[_isValidAction](ui.SemanticsAction.scrollDown))) config.onScrollDown = dart.bind(this, _performSemanticScrollDown);
      }
    }
    [_isValidAction](action) {
      if (action == null) dart.nullFailed(I[0], 3634, 39, "action");
      return this.validActions == null || dart.test(dart.nullCheck(this.validActions).contains(action));
    }
    [_performSemanticScrollLeft]() {
      if (this.onHorizontalDragUpdate != null) {
        let primaryDelta = dart.notNull(this.size.width) * -dart.notNull(this.scrollFactor);
        dart.nullCheck(this.onHorizontalDragUpdate)(new drag_details.DragUpdateDetails.new({delta: new ui.Offset.new(primaryDelta, 0.0), primaryDelta: primaryDelta, globalPosition: this.localToGlobal(this.size.center(ui.Offset.zero))}));
      }
    }
    [_performSemanticScrollRight]() {
      if (this.onHorizontalDragUpdate != null) {
        let primaryDelta = dart.notNull(this.size.width) * dart.notNull(this.scrollFactor);
        dart.nullCheck(this.onHorizontalDragUpdate)(new drag_details.DragUpdateDetails.new({delta: new ui.Offset.new(primaryDelta, 0.0), primaryDelta: primaryDelta, globalPosition: this.localToGlobal(this.size.center(ui.Offset.zero))}));
      }
    }
    [_performSemanticScrollUp]() {
      if (this.onVerticalDragUpdate != null) {
        let primaryDelta = dart.notNull(this.size.height) * -dart.notNull(this.scrollFactor);
        dart.nullCheck(this.onVerticalDragUpdate)(new drag_details.DragUpdateDetails.new({delta: new ui.Offset.new(0.0, primaryDelta), primaryDelta: primaryDelta, globalPosition: this.localToGlobal(this.size.center(ui.Offset.zero))}));
      }
    }
    [_performSemanticScrollDown]() {
      if (this.onVerticalDragUpdate != null) {
        let primaryDelta = dart.notNull(this.size.height) * dart.notNull(this.scrollFactor);
        dart.nullCheck(this.onVerticalDragUpdate)(new drag_details.DragUpdateDetails.new({delta: new ui.Offset.new(0.0, primaryDelta), primaryDelta: primaryDelta, globalPosition: this.localToGlobal(this.size.center(ui.Offset.zero))}));
      }
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 3679, 56, "properties");
      super.debugFillProperties(properties);
      let gestures = (() => {
        let t1 = T$.JSArrayOfString().of([]);
        if (this.onTap != null) t1[$add]("tap");
        if (this.onLongPress != null) t1[$add]("long press");
        if (this.onHorizontalDragUpdate != null) t1[$add]("horizontal scroll");
        if (this.onVerticalDragUpdate != null) t1[$add]("vertical scroll");
        return t1;
      })();
      if (dart.test(gestures[$isEmpty])) gestures[$add]("<none>");
      properties.add(new (T$.IterablePropertyOfString()).new("gestures", gestures));
    }
  };
  (proxy_box.RenderSemanticsGestureHandler.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let onTap = opts && 'onTap' in opts ? opts.onTap : null;
    let onLongPress = opts && 'onLongPress' in opts ? opts.onLongPress : null;
    let onHorizontalDragUpdate = opts && 'onHorizontalDragUpdate' in opts ? opts.onHorizontalDragUpdate : null;
    let onVerticalDragUpdate = opts && 'onVerticalDragUpdate' in opts ? opts.onVerticalDragUpdate : null;
    let scrollFactor = opts && 'scrollFactor' in opts ? opts.scrollFactor : 0.8;
    if (scrollFactor == null) dart.nullFailed(I[0], 3527, 10, "scrollFactor");
    this[_validActions] = null;
    this[scrollFactor$] = scrollFactor;
    if (!(scrollFactor != null)) dart.assertFailed(null, I[0], 3528, 15, "scrollFactor != null");
    this[_onTap] = onTap;
    this[_onLongPress] = onLongPress;
    this[_onHorizontalDragUpdate] = onHorizontalDragUpdate;
    this[_onVerticalDragUpdate] = onVerticalDragUpdate;
    proxy_box.RenderSemanticsGestureHandler.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderSemanticsGestureHandler.prototype;
  dart.addTypeTests(proxy_box.RenderSemanticsGestureHandler);
  dart.addTypeCaches(proxy_box.RenderSemanticsGestureHandler);
  dart.setMethodSignature(proxy_box.RenderSemanticsGestureHandler, () => ({
    __proto__: dart.getMethods(proxy_box.RenderSemanticsGestureHandler.__proto__),
    [_isValidAction]: dart.fnType(core.bool, [ui.SemanticsAction]),
    [_performSemanticScrollLeft]: dart.fnType(dart.void, []),
    [_performSemanticScrollRight]: dart.fnType(dart.void, []),
    [_performSemanticScrollUp]: dart.fnType(dart.void, []),
    [_performSemanticScrollDown]: dart.fnType(dart.void, [])
  }));
  dart.setGetterSignature(proxy_box.RenderSemanticsGestureHandler, () => ({
    __proto__: dart.getGetters(proxy_box.RenderSemanticsGestureHandler.__proto__),
    validActions: dart.nullable(core.Set$(ui.SemanticsAction)),
    onTap: dart.nullable(dart.fnType(dart.void, [])),
    onLongPress: dart.nullable(dart.fnType(dart.void, [])),
    onHorizontalDragUpdate: dart.nullable(dart.fnType(dart.void, [drag_details.DragUpdateDetails])),
    onVerticalDragUpdate: dart.nullable(dart.fnType(dart.void, [drag_details.DragUpdateDetails]))
  }));
  dart.setSetterSignature(proxy_box.RenderSemanticsGestureHandler, () => ({
    __proto__: dart.getSetters(proxy_box.RenderSemanticsGestureHandler.__proto__),
    validActions: dart.nullable(core.Set$(ui.SemanticsAction)),
    onTap: dart.nullable(dart.fnType(dart.void, [])),
    onLongPress: dart.nullable(dart.fnType(dart.void, [])),
    onHorizontalDragUpdate: dart.nullable(dart.fnType(dart.void, [drag_details.DragUpdateDetails])),
    onVerticalDragUpdate: dart.nullable(dart.fnType(dart.void, [drag_details.DragUpdateDetails]))
  }));
  dart.setLibraryUri(proxy_box.RenderSemanticsGestureHandler, I[1]);
  dart.setFieldSignature(proxy_box.RenderSemanticsGestureHandler, () => ({
    __proto__: dart.getFields(proxy_box.RenderSemanticsGestureHandler.__proto__),
    [_validActions]: dart.fieldType(dart.nullable(core.Set$(ui.SemanticsAction))),
    [_onTap]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onLongPress]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onHorizontalDragUpdate]: dart.fieldType(dart.nullable(dart.fnType(dart.void, [drag_details.DragUpdateDetails]))),
    [_onVerticalDragUpdate]: dart.fieldType(dart.nullable(dart.fnType(dart.void, [drag_details.DragUpdateDetails]))),
    scrollFactor: dart.fieldType(core.double)
  }));
  var _container = dart.privateName(proxy_box, "_container");
  var _explicitChildNodes = dart.privateName(proxy_box, "_explicitChildNodes");
  var _excludeSemantics = dart.privateName(proxy_box, "_excludeSemantics");
  var _enabled = dart.privateName(proxy_box, "_enabled");
  var _checked = dart.privateName(proxy_box, "_checked");
  var _toggled = dart.privateName(proxy_box, "_toggled");
  var _selected = dart.privateName(proxy_box, "_selected");
  var _button = dart.privateName(proxy_box, "_button");
  var _slider = dart.privateName(proxy_box, "_slider");
  var _link = dart.privateName(proxy_box, "_link");
  var _header = dart.privateName(proxy_box, "_header");
  var _textField = dart.privateName(proxy_box, "_textField");
  var _readOnly = dart.privateName(proxy_box, "_readOnly");
  var _focusable = dart.privateName(proxy_box, "_focusable");
  var _focused = dart.privateName(proxy_box, "_focused");
  var _inMutuallyExclusiveGroup = dart.privateName(proxy_box, "_inMutuallyExclusiveGroup");
  var _obscured = dart.privateName(proxy_box, "_obscured");
  var _multiline = dart.privateName(proxy_box, "_multiline");
  var _scopesRoute = dart.privateName(proxy_box, "_scopesRoute");
  var _namesRoute = dart.privateName(proxy_box, "_namesRoute");
  var _liveRegion = dart.privateName(proxy_box, "_liveRegion");
  var _maxValueLength = dart.privateName(proxy_box, "_maxValueLength");
  var _currentValueLength = dart.privateName(proxy_box, "_currentValueLength");
  var _hidden = dart.privateName(proxy_box, "_hidden");
  var _image = dart.privateName(proxy_box, "_image");
  var _onDismiss = dart.privateName(proxy_box, "_onDismiss");
  var _label = dart.privateName(proxy_box, "_label");
  var _value = dart.privateName(proxy_box, "_value");
  var _increasedValue = dart.privateName(proxy_box, "_increasedValue");
  var _decreasedValue = dart.privateName(proxy_box, "_decreasedValue");
  var _hint = dart.privateName(proxy_box, "_hint");
  var _hintOverrides = dart.privateName(proxy_box, "_hintOverrides");
  var _sortKey = dart.privateName(proxy_box, "_sortKey");
  var _tagForChildren = dart.privateName(proxy_box, "_tagForChildren");
  var _onScrollLeft = dart.privateName(proxy_box, "_onScrollLeft");
  var _onScrollRight = dart.privateName(proxy_box, "_onScrollRight");
  var _onScrollUp = dart.privateName(proxy_box, "_onScrollUp");
  var _onScrollDown = dart.privateName(proxy_box, "_onScrollDown");
  var _onIncrease = dart.privateName(proxy_box, "_onIncrease");
  var _onDecrease = dart.privateName(proxy_box, "_onDecrease");
  var _onCopy = dart.privateName(proxy_box, "_onCopy");
  var _onCut = dart.privateName(proxy_box, "_onCut");
  var _onPaste = dart.privateName(proxy_box, "_onPaste");
  var _onMoveCursorForwardByCharacter = dart.privateName(proxy_box, "_onMoveCursorForwardByCharacter");
  var _onMoveCursorBackwardByCharacter = dart.privateName(proxy_box, "_onMoveCursorBackwardByCharacter");
  var _onMoveCursorForwardByWord = dart.privateName(proxy_box, "_onMoveCursorForwardByWord");
  var _onMoveCursorBackwardByWord = dart.privateName(proxy_box, "_onMoveCursorBackwardByWord");
  var _onSetSelection = dart.privateName(proxy_box, "_onSetSelection");
  var _onDidGainAccessibilityFocus = dart.privateName(proxy_box, "_onDidGainAccessibilityFocus");
  var _onDidLoseAccessibilityFocus = dart.privateName(proxy_box, "_onDidLoseAccessibilityFocus");
  var _customSemanticsActions = dart.privateName(proxy_box, "_customSemanticsActions");
  var _performTap = dart.privateName(proxy_box, "_performTap");
  var _performLongPress = dart.privateName(proxy_box, "_performLongPress");
  var _performDismiss = dart.privateName(proxy_box, "_performDismiss");
  var _performScrollLeft = dart.privateName(proxy_box, "_performScrollLeft");
  var _performScrollRight = dart.privateName(proxy_box, "_performScrollRight");
  var _performScrollUp = dart.privateName(proxy_box, "_performScrollUp");
  var _performScrollDown = dart.privateName(proxy_box, "_performScrollDown");
  var _performIncrease = dart.privateName(proxy_box, "_performIncrease");
  var _performDecrease = dart.privateName(proxy_box, "_performDecrease");
  var _performCopy = dart.privateName(proxy_box, "_performCopy");
  var _performCut = dart.privateName(proxy_box, "_performCut");
  var _performPaste = dart.privateName(proxy_box, "_performPaste");
  var _performMoveCursorForwardByCharacter = dart.privateName(proxy_box, "_performMoveCursorForwardByCharacter");
  var _performMoveCursorBackwardByCharacter = dart.privateName(proxy_box, "_performMoveCursorBackwardByCharacter");
  var _performMoveCursorForwardByWord = dart.privateName(proxy_box, "_performMoveCursorForwardByWord");
  var _performMoveCursorBackwardByWord = dart.privateName(proxy_box, "_performMoveCursorBackwardByWord");
  var _performSetSelection = dart.privateName(proxy_box, "_performSetSelection");
  var _performDidGainAccessibilityFocus = dart.privateName(proxy_box, "_performDidGainAccessibilityFocus");
  var _performDidLoseAccessibilityFocus = dart.privateName(proxy_box, "_performDidLoseAccessibilityFocus");
  proxy_box.RenderSemanticsAnnotations = class RenderSemanticsAnnotations extends proxy_box.RenderProxyBox {
    get container() {
      return this[_container];
    }
    set container(value) {
      if (value == null) dart.nullFailed(I[0], 3822, 22, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 3823, 12, "value != null");
      if (this.container == value) return;
      this[_container] = value;
      this.markNeedsSemanticsUpdate();
    }
    get explicitChildNodes() {
      return this[_explicitChildNodes];
    }
    set explicitChildNodes(value) {
      if (value == null) dart.nullFailed(I[0], 3845, 31, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 3846, 12, "value != null");
      if (this[_explicitChildNodes] == value) return;
      this[_explicitChildNodes] = value;
      this.markNeedsSemanticsUpdate();
    }
    get excludeSemantics() {
      return this[_excludeSemantics];
    }
    set excludeSemantics(value) {
      if (value == null) dart.nullFailed(I[0], 3861, 29, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 3862, 12, "value != null");
      if (this[_excludeSemantics] == value) return;
      this[_excludeSemantics] = value;
      this.markNeedsSemanticsUpdate();
    }
    get checked() {
      return this[_checked];
    }
    set checked(value) {
      if (this.checked == value) return;
      this[_checked] = value;
      this.markNeedsSemanticsUpdate();
    }
    get enabled() {
      return this[_enabled];
    }
    set enabled(value) {
      if (this.enabled == value) return;
      this[_enabled] = value;
      this.markNeedsSemanticsUpdate();
    }
    get selected() {
      return this[_selected];
    }
    set selected(value) {
      if (this.selected == value) return;
      this[_selected] = value;
      this.markNeedsSemanticsUpdate();
    }
    get button() {
      return this[_button];
    }
    set button(value) {
      if (this.button == value) return;
      this[_button] = value;
      this.markNeedsSemanticsUpdate();
    }
    get slider() {
      return this[_slider];
    }
    set slider(value) {
      if (this.slider == value) return;
      this[_slider] = value;
      this.markNeedsSemanticsUpdate();
    }
    get link() {
      return this[_link];
    }
    set link(value) {
      if (this.link == value) return;
      this[_link] = value;
      this.markNeedsSemanticsUpdate();
    }
    get header() {
      return this[_header];
    }
    set header(value) {
      if (this.header == value) return;
      this[_header] = value;
      this.markNeedsSemanticsUpdate();
    }
    get textField() {
      return this[_textField];
    }
    set textField(value) {
      if (this.textField == value) return;
      this[_textField] = value;
      this.markNeedsSemanticsUpdate();
    }
    get readOnly() {
      return this[_readOnly];
    }
    set readOnly(value) {
      if (this.readOnly == value) return;
      this[_readOnly] = value;
      this.markNeedsSemanticsUpdate();
    }
    get focusable() {
      return this[_focusable];
    }
    set focusable(value) {
      if (this.focusable == value) return;
      this[_focusable] = value;
      this.markNeedsSemanticsUpdate();
    }
    get focused() {
      return this[_focused];
    }
    set focused(value) {
      if (this.focused == value) return;
      this[_focused] = value;
      this.markNeedsSemanticsUpdate();
    }
    get inMutuallyExclusiveGroup() {
      return this[_inMutuallyExclusiveGroup];
    }
    set inMutuallyExclusiveGroup(value) {
      if (this.inMutuallyExclusiveGroup == value) return;
      this[_inMutuallyExclusiveGroup] = value;
      this.markNeedsSemanticsUpdate();
    }
    get obscured() {
      return this[_obscured];
    }
    set obscured(value) {
      if (this.obscured == value) return;
      this[_obscured] = value;
      this.markNeedsSemanticsUpdate();
    }
    get multiline() {
      return this[_multiline];
    }
    set multiline(value) {
      if (this.multiline == value) return;
      this[_multiline] = value;
      this.markNeedsSemanticsUpdate();
    }
    get scopesRoute() {
      return this[_scopesRoute];
    }
    set scopesRoute(value) {
      if (this.scopesRoute == value) return;
      this[_scopesRoute] = value;
      this.markNeedsSemanticsUpdate();
    }
    get namesRoute() {
      return this[_namesRoute];
    }
    set namesRoute(value) {
      if (this[_namesRoute] == value) return;
      this[_namesRoute] = value;
      this.markNeedsSemanticsUpdate();
    }
    get hidden() {
      return this[_hidden];
    }
    set hidden(value) {
      if (this.hidden == value) return;
      this[_hidden] = value;
      this.markNeedsSemanticsUpdate();
    }
    get image() {
      return this[_image];
    }
    set image(value) {
      if (this[_image] == value) return;
      this[_image] = value;
    }
    get liveRegion() {
      return this[_liveRegion];
    }
    set liveRegion(value) {
      if (this[_liveRegion] == value) return;
      this[_liveRegion] = value;
      this.markNeedsSemanticsUpdate();
    }
    get maxValueLength() {
      return this[_maxValueLength];
    }
    set maxValueLength(value) {
      if (this[_maxValueLength] == value) return;
      this[_maxValueLength] = value;
      this.markNeedsSemanticsUpdate();
    }
    get currentValueLength() {
      return this[_currentValueLength];
    }
    set currentValueLength(value) {
      if (this[_currentValueLength] == value) return;
      this[_currentValueLength] = value;
      this.markNeedsSemanticsUpdate();
    }
    get toggled() {
      return this[_toggled];
    }
    set toggled(value) {
      if (this[_toggled] == value) return;
      this[_toggled] = value;
      this.markNeedsSemanticsUpdate();
    }
    get label() {
      return this[_label];
    }
    set label(value) {
      if (this[_label] == value) return;
      this[_label] = value;
      this.markNeedsSemanticsUpdate();
    }
    get value() {
      return this[_value];
    }
    set value(value) {
      if (this[_value] == value) return;
      this[_value] = value;
      this.markNeedsSemanticsUpdate();
    }
    get increasedValue() {
      return this[_increasedValue];
    }
    set increasedValue(value) {
      if (this[_increasedValue] == value) return;
      this[_increasedValue] = value;
      this.markNeedsSemanticsUpdate();
    }
    get decreasedValue() {
      return this[_decreasedValue];
    }
    set decreasedValue(value) {
      if (this[_decreasedValue] == value) return;
      this[_decreasedValue] = value;
      this.markNeedsSemanticsUpdate();
    }
    get hint() {
      return this[_hint];
    }
    set hint(value) {
      if (this[_hint] == value) return;
      this[_hint] = value;
      this.markNeedsSemanticsUpdate();
    }
    get hintOverrides() {
      return this[_hintOverrides];
    }
    set hintOverrides(value) {
      if (dart.equals(this[_hintOverrides], value)) return;
      this[_hintOverrides] = value;
      this.markNeedsSemanticsUpdate();
    }
    get textDirection() {
      return this[_textDirection];
    }
    set textDirection(value) {
      if (this.textDirection == value) return;
      this[_textDirection] = value;
      this.markNeedsSemanticsUpdate();
    }
    get sortKey() {
      return this[_sortKey];
    }
    set sortKey(value) {
      if (dart.equals(this.sortKey, value)) return;
      this[_sortKey] = value;
      this.markNeedsSemanticsUpdate();
    }
    get tagForChildren() {
      return this[_tagForChildren];
    }
    set tagForChildren(value) {
      if (dart.equals(this[_tagForChildren], value)) return;
      this.markNeedsSemanticsUpdate();
      this[_tagForChildren] = value;
    }
    get onTap() {
      return this[_onTap];
    }
    set onTap(handler) {
      if (dart.equals(this[_onTap], handler)) return;
      let hadValue = this[_onTap] != null;
      this[_onTap] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onDismiss() {
      return this[_onDismiss];
    }
    set onDismiss(handler) {
      if (dart.equals(this[_onDismiss], handler)) return;
      let hadValue = this[_onDismiss] != null;
      this[_onDismiss] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onLongPress() {
      return this[_onLongPress];
    }
    set onLongPress(handler) {
      if (dart.equals(this[_onLongPress], handler)) return;
      let hadValue = this[_onLongPress] != null;
      this[_onLongPress] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onScrollLeft() {
      return this[_onScrollLeft];
    }
    set onScrollLeft(handler) {
      if (dart.equals(this[_onScrollLeft], handler)) return;
      let hadValue = this[_onScrollLeft] != null;
      this[_onScrollLeft] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onScrollRight() {
      return this[_onScrollRight];
    }
    set onScrollRight(handler) {
      if (dart.equals(this[_onScrollRight], handler)) return;
      let hadValue = this[_onScrollRight] != null;
      this[_onScrollRight] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onScrollUp() {
      return this[_onScrollUp];
    }
    set onScrollUp(handler) {
      if (dart.equals(this[_onScrollUp], handler)) return;
      let hadValue = this[_onScrollUp] != null;
      this[_onScrollUp] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onScrollDown() {
      return this[_onScrollDown];
    }
    set onScrollDown(handler) {
      if (dart.equals(this[_onScrollDown], handler)) return;
      let hadValue = this[_onScrollDown] != null;
      this[_onScrollDown] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onIncrease() {
      return this[_onIncrease];
    }
    set onIncrease(handler) {
      if (dart.equals(this[_onIncrease], handler)) return;
      let hadValue = this[_onIncrease] != null;
      this[_onIncrease] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onDecrease() {
      return this[_onDecrease];
    }
    set onDecrease(handler) {
      if (dart.equals(this[_onDecrease], handler)) return;
      let hadValue = this[_onDecrease] != null;
      this[_onDecrease] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onCopy() {
      return this[_onCopy];
    }
    set onCopy(handler) {
      if (dart.equals(this[_onCopy], handler)) return;
      let hadValue = this[_onCopy] != null;
      this[_onCopy] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onCut() {
      return this[_onCut];
    }
    set onCut(handler) {
      if (dart.equals(this[_onCut], handler)) return;
      let hadValue = this[_onCut] != null;
      this[_onCut] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onPaste() {
      return this[_onPaste];
    }
    set onPaste(handler) {
      if (dart.equals(this[_onPaste], handler)) return;
      let hadValue = this[_onPaste] != null;
      this[_onPaste] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onMoveCursorForwardByCharacter() {
      return this[_onMoveCursorForwardByCharacter];
    }
    set onMoveCursorForwardByCharacter(handler) {
      if (dart.equals(this[_onMoveCursorForwardByCharacter], handler)) return;
      let hadValue = this[_onMoveCursorForwardByCharacter] != null;
      this[_onMoveCursorForwardByCharacter] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onMoveCursorBackwardByCharacter() {
      return this[_onMoveCursorBackwardByCharacter];
    }
    set onMoveCursorBackwardByCharacter(handler) {
      if (dart.equals(this[_onMoveCursorBackwardByCharacter], handler)) return;
      let hadValue = this[_onMoveCursorBackwardByCharacter] != null;
      this[_onMoveCursorBackwardByCharacter] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onMoveCursorForwardByWord() {
      return this[_onMoveCursorForwardByWord];
    }
    set onMoveCursorForwardByWord(handler) {
      if (dart.equals(this[_onMoveCursorForwardByWord], handler)) return;
      let hadValue = this[_onMoveCursorForwardByWord] != null;
      this[_onMoveCursorForwardByWord] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onMoveCursorBackwardByWord() {
      return this[_onMoveCursorBackwardByWord];
    }
    set onMoveCursorBackwardByWord(handler) {
      if (dart.equals(this[_onMoveCursorBackwardByWord], handler)) return;
      let hadValue = this[_onMoveCursorBackwardByWord] != null;
      this[_onMoveCursorBackwardByWord] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onSetSelection() {
      return this[_onSetSelection];
    }
    set onSetSelection(handler) {
      if (dart.equals(this[_onSetSelection], handler)) return;
      let hadValue = this[_onSetSelection] != null;
      this[_onSetSelection] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onDidGainAccessibilityFocus() {
      return this[_onDidGainAccessibilityFocus];
    }
    set onDidGainAccessibilityFocus(handler) {
      if (dart.equals(this[_onDidGainAccessibilityFocus], handler)) return;
      let hadValue = this[_onDidGainAccessibilityFocus] != null;
      this[_onDidGainAccessibilityFocus] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get onDidLoseAccessibilityFocus() {
      return this[_onDidLoseAccessibilityFocus];
    }
    set onDidLoseAccessibilityFocus(handler) {
      if (dart.equals(this[_onDidLoseAccessibilityFocus], handler)) return;
      let hadValue = this[_onDidLoseAccessibilityFocus] != null;
      this[_onDidLoseAccessibilityFocus] = handler;
      if (handler != null !== hadValue) this.markNeedsSemanticsUpdate();
    }
    get customSemanticsActions() {
      return this[_customSemanticsActions];
    }
    set customSemanticsActions(value) {
      if (dart.equals(this[_customSemanticsActions], value)) return;
      this[_customSemanticsActions] = value;
      this.markNeedsSemanticsUpdate();
    }
    visitChildrenForSemantics(visitor) {
      if (visitor == null) dart.nullFailed(I[0], 4618, 54, "visitor");
      if (dart.test(this.excludeSemantics)) return;
      super.visitChildrenForSemantics(visitor);
    }
    describeSemanticsConfiguration(config) {
      if (config == null) dart.nullFailed(I[0], 4625, 62, "config");
      super.describeSemanticsConfiguration(config);
      config.isSemanticBoundary = this.container;
      config.explicitChildNodes = this.explicitChildNodes;
      if (!(this.scopesRoute === true && this.explicitChildNodes === true || this.scopesRoute !== true)) dart.assertFailed("explicitChildNodes must be set to true if scopes route is true", I[0], 4629, 12, "(scopesRoute == true && explicitChildNodes == true) || scopesRoute != true");
      if (!!(this.toggled === true && this.checked === true)) dart.assertFailed("A semantics node cannot be toggled and checked at the same time", I[0], 4631, 12, "!(toggled == true && checked == true)");
      if (this.enabled != null) config.isEnabled = this.enabled;
      if (this.checked != null) config.isChecked = this.checked;
      if (this.toggled != null) config.isToggled = this.toggled;
      if (this.selected != null) config.isSelected = dart.nullCheck(this.selected);
      if (this.button != null) config.isButton = dart.nullCheck(this.button);
      if (this.link != null) config.isLink = dart.nullCheck(this.link);
      if (this.slider != null) config.isSlider = dart.nullCheck(this.slider);
      if (this.header != null) config.isHeader = dart.nullCheck(this.header);
      if (this.textField != null) config.isTextField = dart.nullCheck(this.textField);
      if (this.readOnly != null) config.isReadOnly = dart.nullCheck(this.readOnly);
      if (this.focusable != null) config.isFocusable = dart.nullCheck(this.focusable);
      if (this.focused != null) config.isFocused = dart.nullCheck(this.focused);
      if (this.inMutuallyExclusiveGroup != null) config.isInMutuallyExclusiveGroup = dart.nullCheck(this.inMutuallyExclusiveGroup);
      if (this.obscured != null) config.isObscured = dart.nullCheck(this.obscured);
      if (this.multiline != null) config.isMultiline = dart.nullCheck(this.multiline);
      if (this.hidden != null) config.isHidden = dart.nullCheck(this.hidden);
      if (this.image != null) config.isImage = dart.nullCheck(this.image);
      if (this.label != null) config.label = dart.nullCheck(this.label);
      if (this.value != null) config.value = dart.nullCheck(this.value);
      if (this.increasedValue != null) config.increasedValue = dart.nullCheck(this.increasedValue);
      if (this.decreasedValue != null) config.decreasedValue = dart.nullCheck(this.decreasedValue);
      if (this.hint != null) config.hint = dart.nullCheck(this.hint);
      if (this.hintOverrides != null && dart.test(dart.nullCheck(this.hintOverrides).isNotEmpty)) config.hintOverrides = this.hintOverrides;
      if (this.scopesRoute != null) config.scopesRoute = dart.nullCheck(this.scopesRoute);
      if (this.namesRoute != null) config.namesRoute = dart.nullCheck(this.namesRoute);
      if (this.liveRegion != null) config.liveRegion = dart.nullCheck(this.liveRegion);
      if (this.maxValueLength != null) {
        config.maxValueLength = this.maxValueLength;
      }
      if (this.currentValueLength != null) {
        config.currentValueLength = this.currentValueLength;
      }
      if (this.textDirection != null) config.textDirection = this.textDirection;
      if (this.sortKey != null) config.sortKey = this.sortKey;
      if (this.tagForChildren != null) config.addTagForChildren(dart.nullCheck(this.tagForChildren));
      if (this.onTap != null) config.onTap = dart.bind(this, _performTap);
      if (this.onLongPress != null) config.onLongPress = dart.bind(this, _performLongPress);
      if (this.onDismiss != null) config.onDismiss = dart.bind(this, _performDismiss);
      if (this.onScrollLeft != null) config.onScrollLeft = dart.bind(this, _performScrollLeft);
      if (this.onScrollRight != null) config.onScrollRight = dart.bind(this, _performScrollRight);
      if (this.onScrollUp != null) config.onScrollUp = dart.bind(this, _performScrollUp);
      if (this.onScrollDown != null) config.onScrollDown = dart.bind(this, _performScrollDown);
      if (this.onIncrease != null) config.onIncrease = dart.bind(this, _performIncrease);
      if (this.onDecrease != null) config.onDecrease = dart.bind(this, _performDecrease);
      if (this.onCopy != null) config.onCopy = dart.bind(this, _performCopy);
      if (this.onCut != null) config.onCut = dart.bind(this, _performCut);
      if (this.onPaste != null) config.onPaste = dart.bind(this, _performPaste);
      if (this.onMoveCursorForwardByCharacter != null) config.onMoveCursorForwardByCharacter = dart.bind(this, _performMoveCursorForwardByCharacter);
      if (this.onMoveCursorBackwardByCharacter != null) config.onMoveCursorBackwardByCharacter = dart.bind(this, _performMoveCursorBackwardByCharacter);
      if (this.onMoveCursorForwardByWord != null) config.onMoveCursorForwardByWord = dart.bind(this, _performMoveCursorForwardByWord);
      if (this.onMoveCursorBackwardByWord != null) config.onMoveCursorBackwardByWord = dart.bind(this, _performMoveCursorBackwardByWord);
      if (this.onSetSelection != null) config.onSetSelection = dart.bind(this, _performSetSelection);
      if (this.onDidGainAccessibilityFocus != null) config.onDidGainAccessibilityFocus = dart.bind(this, _performDidGainAccessibilityFocus);
      if (this.onDidLoseAccessibilityFocus != null) config.onDidLoseAccessibilityFocus = dart.bind(this, _performDidLoseAccessibilityFocus);
      if (this.customSemanticsActions != null) config.customSemanticsActions = dart.nullCheck(this[_customSemanticsActions]);
    }
    [_performTap]() {
      if (this.onTap != null) dart.nullCheck(this.onTap)();
    }
    [_performLongPress]() {
      if (this.onLongPress != null) dart.nullCheck(this.onLongPress)();
    }
    [_performDismiss]() {
      if (this.onDismiss != null) dart.nullCheck(this.onDismiss)();
    }
    [_performScrollLeft]() {
      if (this.onScrollLeft != null) dart.nullCheck(this.onScrollLeft)();
    }
    [_performScrollRight]() {
      if (this.onScrollRight != null) dart.nullCheck(this.onScrollRight)();
    }
    [_performScrollUp]() {
      if (this.onScrollUp != null) dart.nullCheck(this.onScrollUp)();
    }
    [_performScrollDown]() {
      if (this.onScrollDown != null) dart.nullCheck(this.onScrollDown)();
    }
    [_performIncrease]() {
      if (this.onIncrease != null) dart.nullCheck(this.onIncrease)();
    }
    [_performDecrease]() {
      if (this.onDecrease != null) dart.nullCheck(this.onDecrease)();
    }
    [_performCopy]() {
      if (this.onCopy != null) dart.nullCheck(this.onCopy)();
    }
    [_performCut]() {
      if (this.onCut != null) dart.nullCheck(this.onCut)();
    }
    [_performPaste]() {
      if (this.onPaste != null) dart.nullCheck(this.onPaste)();
    }
    [_performMoveCursorForwardByCharacter](extendSelection) {
      if (extendSelection == null) dart.nullFailed(I[0], 4803, 50, "extendSelection");
      if (this.onMoveCursorForwardByCharacter != null) dart.nullCheck(this.onMoveCursorForwardByCharacter)(extendSelection);
    }
    [_performMoveCursorBackwardByCharacter](extendSelection) {
      if (extendSelection == null) dart.nullFailed(I[0], 4808, 51, "extendSelection");
      if (this.onMoveCursorBackwardByCharacter != null) dart.nullCheck(this.onMoveCursorBackwardByCharacter)(extendSelection);
    }
    [_performMoveCursorForwardByWord](extendSelection) {
      if (extendSelection == null) dart.nullFailed(I[0], 4813, 45, "extendSelection");
      if (this.onMoveCursorForwardByWord != null) dart.nullCheck(this.onMoveCursorForwardByWord)(extendSelection);
    }
    [_performMoveCursorBackwardByWord](extendSelection) {
      if (extendSelection == null) dart.nullFailed(I[0], 4818, 46, "extendSelection");
      if (this.onMoveCursorBackwardByWord != null) dart.nullCheck(this.onMoveCursorBackwardByWord)(extendSelection);
    }
    [_performSetSelection](selection) {
      if (selection == null) dart.nullFailed(I[0], 4823, 43, "selection");
      if (this.onSetSelection != null) dart.nullCheck(this.onSetSelection)(selection);
    }
    [_performDidGainAccessibilityFocus]() {
      if (this.onDidGainAccessibilityFocus != null) dart.nullCheck(this.onDidGainAccessibilityFocus)();
    }
    [_performDidLoseAccessibilityFocus]() {
      if (this.onDidLoseAccessibilityFocus != null) dart.nullCheck(this.onDidLoseAccessibilityFocus)();
    }
  };
  (proxy_box.RenderSemanticsAnnotations.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let container = opts && 'container' in opts ? opts.container : false;
    if (container == null) dart.nullFailed(I[0], 3702, 10, "container");
    let explicitChildNodes = opts && 'explicitChildNodes' in opts ? opts.explicitChildNodes : false;
    if (explicitChildNodes == null) dart.nullFailed(I[0], 3703, 10, "explicitChildNodes");
    let excludeSemantics = opts && 'excludeSemantics' in opts ? opts.excludeSemantics : false;
    if (excludeSemantics == null) dart.nullFailed(I[0], 3704, 10, "excludeSemantics");
    let enabled = opts && 'enabled' in opts ? opts.enabled : null;
    let checked = opts && 'checked' in opts ? opts.checked : null;
    let toggled = opts && 'toggled' in opts ? opts.toggled : null;
    let selected = opts && 'selected' in opts ? opts.selected : null;
    let button = opts && 'button' in opts ? opts.button : null;
    let slider = opts && 'slider' in opts ? opts.slider : null;
    let link = opts && 'link' in opts ? opts.link : null;
    let header = opts && 'header' in opts ? opts.header : null;
    let textField = opts && 'textField' in opts ? opts.textField : null;
    let readOnly = opts && 'readOnly' in opts ? opts.readOnly : null;
    let focusable = opts && 'focusable' in opts ? opts.focusable : null;
    let focused = opts && 'focused' in opts ? opts.focused : null;
    let inMutuallyExclusiveGroup = opts && 'inMutuallyExclusiveGroup' in opts ? opts.inMutuallyExclusiveGroup : null;
    let obscured = opts && 'obscured' in opts ? opts.obscured : null;
    let multiline = opts && 'multiline' in opts ? opts.multiline : null;
    let scopesRoute = opts && 'scopesRoute' in opts ? opts.scopesRoute : null;
    let namesRoute = opts && 'namesRoute' in opts ? opts.namesRoute : null;
    let hidden = opts && 'hidden' in opts ? opts.hidden : null;
    let image = opts && 'image' in opts ? opts.image : null;
    let liveRegion = opts && 'liveRegion' in opts ? opts.liveRegion : null;
    let maxValueLength = opts && 'maxValueLength' in opts ? opts.maxValueLength : null;
    let currentValueLength = opts && 'currentValueLength' in opts ? opts.currentValueLength : null;
    let label = opts && 'label' in opts ? opts.label : null;
    let value = opts && 'value' in opts ? opts.value : null;
    let increasedValue = opts && 'increasedValue' in opts ? opts.increasedValue : null;
    let decreasedValue = opts && 'decreasedValue' in opts ? opts.decreasedValue : null;
    let hint = opts && 'hint' in opts ? opts.hint : null;
    let hintOverrides = opts && 'hintOverrides' in opts ? opts.hintOverrides : null;
    let textDirection = opts && 'textDirection' in opts ? opts.textDirection : null;
    let sortKey = opts && 'sortKey' in opts ? opts.sortKey : null;
    let tagForChildren = opts && 'tagForChildren' in opts ? opts.tagForChildren : null;
    let onTap = opts && 'onTap' in opts ? opts.onTap : null;
    let onDismiss = opts && 'onDismiss' in opts ? opts.onDismiss : null;
    let onLongPress = opts && 'onLongPress' in opts ? opts.onLongPress : null;
    let onScrollLeft = opts && 'onScrollLeft' in opts ? opts.onScrollLeft : null;
    let onScrollRight = opts && 'onScrollRight' in opts ? opts.onScrollRight : null;
    let onScrollUp = opts && 'onScrollUp' in opts ? opts.onScrollUp : null;
    let onScrollDown = opts && 'onScrollDown' in opts ? opts.onScrollDown : null;
    let onIncrease = opts && 'onIncrease' in opts ? opts.onIncrease : null;
    let onDecrease = opts && 'onDecrease' in opts ? opts.onDecrease : null;
    let onCopy = opts && 'onCopy' in opts ? opts.onCopy : null;
    let onCut = opts && 'onCut' in opts ? opts.onCut : null;
    let onPaste = opts && 'onPaste' in opts ? opts.onPaste : null;
    let onMoveCursorForwardByCharacter = opts && 'onMoveCursorForwardByCharacter' in opts ? opts.onMoveCursorForwardByCharacter : null;
    let onMoveCursorBackwardByCharacter = opts && 'onMoveCursorBackwardByCharacter' in opts ? opts.onMoveCursorBackwardByCharacter : null;
    let onMoveCursorForwardByWord = opts && 'onMoveCursorForwardByWord' in opts ? opts.onMoveCursorForwardByWord : null;
    let onMoveCursorBackwardByWord = opts && 'onMoveCursorBackwardByWord' in opts ? opts.onMoveCursorBackwardByWord : null;
    let onSetSelection = opts && 'onSetSelection' in opts ? opts.onSetSelection : null;
    let onDidGainAccessibilityFocus = opts && 'onDidGainAccessibilityFocus' in opts ? opts.onDidGainAccessibilityFocus : null;
    let onDidLoseAccessibilityFocus = opts && 'onDidLoseAccessibilityFocus' in opts ? opts.onDidLoseAccessibilityFocus : null;
    let customSemanticsActions = opts && 'customSemanticsActions' in opts ? opts.customSemanticsActions : null;
    if (!(container != null)) dart.assertFailed(null, I[0], 3756, 15, "container != null");
    this[_container] = container;
    this[_explicitChildNodes] = explicitChildNodes;
    this[_excludeSemantics] = excludeSemantics;
    this[_enabled] = enabled;
    this[_checked] = checked;
    this[_toggled] = toggled;
    this[_selected] = selected;
    this[_button] = button;
    this[_slider] = slider;
    this[_link] = link;
    this[_header] = header;
    this[_textField] = textField;
    this[_readOnly] = readOnly;
    this[_focusable] = focusable;
    this[_focused] = focused;
    this[_inMutuallyExclusiveGroup] = inMutuallyExclusiveGroup;
    this[_obscured] = obscured;
    this[_multiline] = multiline;
    this[_scopesRoute] = scopesRoute;
    this[_namesRoute] = namesRoute;
    this[_liveRegion] = liveRegion;
    this[_maxValueLength] = maxValueLength;
    this[_currentValueLength] = currentValueLength;
    this[_hidden] = hidden;
    this[_image] = image;
    this[_onDismiss] = onDismiss;
    this[_label] = label;
    this[_value] = value;
    this[_increasedValue] = increasedValue;
    this[_decreasedValue] = decreasedValue;
    this[_hint] = hint;
    this[_hintOverrides] = hintOverrides;
    this[_textDirection] = textDirection;
    this[_sortKey] = sortKey;
    this[_tagForChildren] = tagForChildren;
    this[_onTap] = onTap;
    this[_onLongPress] = onLongPress;
    this[_onScrollLeft] = onScrollLeft;
    this[_onScrollRight] = onScrollRight;
    this[_onScrollUp] = onScrollUp;
    this[_onScrollDown] = onScrollDown;
    this[_onIncrease] = onIncrease;
    this[_onDecrease] = onDecrease;
    this[_onCopy] = onCopy;
    this[_onCut] = onCut;
    this[_onPaste] = onPaste;
    this[_onMoveCursorForwardByCharacter] = onMoveCursorForwardByCharacter;
    this[_onMoveCursorBackwardByCharacter] = onMoveCursorBackwardByCharacter;
    this[_onMoveCursorForwardByWord] = onMoveCursorForwardByWord;
    this[_onMoveCursorBackwardByWord] = onMoveCursorBackwardByWord;
    this[_onSetSelection] = onSetSelection;
    this[_onDidGainAccessibilityFocus] = onDidGainAccessibilityFocus;
    this[_onDidLoseAccessibilityFocus] = onDidLoseAccessibilityFocus;
    this[_customSemanticsActions] = customSemanticsActions;
    proxy_box.RenderSemanticsAnnotations.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderSemanticsAnnotations.prototype;
  dart.addTypeTests(proxy_box.RenderSemanticsAnnotations);
  dart.addTypeCaches(proxy_box.RenderSemanticsAnnotations);
  dart.setMethodSignature(proxy_box.RenderSemanticsAnnotations, () => ({
    __proto__: dart.getMethods(proxy_box.RenderSemanticsAnnotations.__proto__),
    [_performTap]: dart.fnType(dart.void, []),
    [_performLongPress]: dart.fnType(dart.void, []),
    [_performDismiss]: dart.fnType(dart.void, []),
    [_performScrollLeft]: dart.fnType(dart.void, []),
    [_performScrollRight]: dart.fnType(dart.void, []),
    [_performScrollUp]: dart.fnType(dart.void, []),
    [_performScrollDown]: dart.fnType(dart.void, []),
    [_performIncrease]: dart.fnType(dart.void, []),
    [_performDecrease]: dart.fnType(dart.void, []),
    [_performCopy]: dart.fnType(dart.void, []),
    [_performCut]: dart.fnType(dart.void, []),
    [_performPaste]: dart.fnType(dart.void, []),
    [_performMoveCursorForwardByCharacter]: dart.fnType(dart.void, [core.bool]),
    [_performMoveCursorBackwardByCharacter]: dart.fnType(dart.void, [core.bool]),
    [_performMoveCursorForwardByWord]: dart.fnType(dart.void, [core.bool]),
    [_performMoveCursorBackwardByWord]: dart.fnType(dart.void, [core.bool]),
    [_performSetSelection]: dart.fnType(dart.void, [text_editing.TextSelection]),
    [_performDidGainAccessibilityFocus]: dart.fnType(dart.void, []),
    [_performDidLoseAccessibilityFocus]: dart.fnType(dart.void, [])
  }));
  dart.setGetterSignature(proxy_box.RenderSemanticsAnnotations, () => ({
    __proto__: dart.getGetters(proxy_box.RenderSemanticsAnnotations.__proto__),
    container: core.bool,
    explicitChildNodes: core.bool,
    excludeSemantics: core.bool,
    checked: dart.nullable(core.bool),
    enabled: dart.nullable(core.bool),
    selected: dart.nullable(core.bool),
    button: dart.nullable(core.bool),
    slider: dart.nullable(core.bool),
    link: dart.nullable(core.bool),
    header: dart.nullable(core.bool),
    textField: dart.nullable(core.bool),
    readOnly: dart.nullable(core.bool),
    focusable: dart.nullable(core.bool),
    focused: dart.nullable(core.bool),
    inMutuallyExclusiveGroup: dart.nullable(core.bool),
    obscured: dart.nullable(core.bool),
    multiline: dart.nullable(core.bool),
    scopesRoute: dart.nullable(core.bool),
    namesRoute: dart.nullable(core.bool),
    hidden: dart.nullable(core.bool),
    image: dart.nullable(core.bool),
    liveRegion: dart.nullable(core.bool),
    maxValueLength: dart.nullable(core.int),
    currentValueLength: dart.nullable(core.int),
    toggled: dart.nullable(core.bool),
    label: dart.nullable(core.String),
    value: dart.nullable(core.String),
    increasedValue: dart.nullable(core.String),
    decreasedValue: dart.nullable(core.String),
    hint: dart.nullable(core.String),
    hintOverrides: dart.nullable(semantics.SemanticsHintOverrides),
    textDirection: dart.nullable(ui.TextDirection),
    sortKey: dart.nullable(semantics.SemanticsSortKey),
    tagForChildren: dart.nullable(semantics.SemanticsTag),
    onTap: dart.nullable(dart.fnType(dart.void, [])),
    onDismiss: dart.nullable(dart.fnType(dart.void, [])),
    onLongPress: dart.nullable(dart.fnType(dart.void, [])),
    onScrollLeft: dart.nullable(dart.fnType(dart.void, [])),
    onScrollRight: dart.nullable(dart.fnType(dart.void, [])),
    onScrollUp: dart.nullable(dart.fnType(dart.void, [])),
    onScrollDown: dart.nullable(dart.fnType(dart.void, [])),
    onIncrease: dart.nullable(dart.fnType(dart.void, [])),
    onDecrease: dart.nullable(dart.fnType(dart.void, [])),
    onCopy: dart.nullable(dart.fnType(dart.void, [])),
    onCut: dart.nullable(dart.fnType(dart.void, [])),
    onPaste: dart.nullable(dart.fnType(dart.void, [])),
    onMoveCursorForwardByCharacter: dart.nullable(dart.fnType(dart.void, [core.bool])),
    onMoveCursorBackwardByCharacter: dart.nullable(dart.fnType(dart.void, [core.bool])),
    onMoveCursorForwardByWord: dart.nullable(dart.fnType(dart.void, [core.bool])),
    onMoveCursorBackwardByWord: dart.nullable(dart.fnType(dart.void, [core.bool])),
    onSetSelection: dart.nullable(dart.fnType(dart.void, [text_editing.TextSelection])),
    onDidGainAccessibilityFocus: dart.nullable(dart.fnType(dart.void, [])),
    onDidLoseAccessibilityFocus: dart.nullable(dart.fnType(dart.void, [])),
    customSemanticsActions: dart.nullable(core.Map$(semantics.CustomSemanticsAction, dart.fnType(dart.void, [])))
  }));
  dart.setSetterSignature(proxy_box.RenderSemanticsAnnotations, () => ({
    __proto__: dart.getSetters(proxy_box.RenderSemanticsAnnotations.__proto__),
    container: core.bool,
    explicitChildNodes: core.bool,
    excludeSemantics: core.bool,
    checked: dart.nullable(core.bool),
    enabled: dart.nullable(core.bool),
    selected: dart.nullable(core.bool),
    button: dart.nullable(core.bool),
    slider: dart.nullable(core.bool),
    link: dart.nullable(core.bool),
    header: dart.nullable(core.bool),
    textField: dart.nullable(core.bool),
    readOnly: dart.nullable(core.bool),
    focusable: dart.nullable(core.bool),
    focused: dart.nullable(core.bool),
    inMutuallyExclusiveGroup: dart.nullable(core.bool),
    obscured: dart.nullable(core.bool),
    multiline: dart.nullable(core.bool),
    scopesRoute: dart.nullable(core.bool),
    namesRoute: dart.nullable(core.bool),
    hidden: dart.nullable(core.bool),
    image: dart.nullable(core.bool),
    liveRegion: dart.nullable(core.bool),
    maxValueLength: dart.nullable(core.int),
    currentValueLength: dart.nullable(core.int),
    toggled: dart.nullable(core.bool),
    label: dart.nullable(core.String),
    value: dart.nullable(core.String),
    increasedValue: dart.nullable(core.String),
    decreasedValue: dart.nullable(core.String),
    hint: dart.nullable(core.String),
    hintOverrides: dart.nullable(semantics.SemanticsHintOverrides),
    textDirection: dart.nullable(ui.TextDirection),
    sortKey: dart.nullable(semantics.SemanticsSortKey),
    tagForChildren: dart.nullable(semantics.SemanticsTag),
    onTap: dart.nullable(dart.fnType(dart.void, [])),
    onDismiss: dart.nullable(dart.fnType(dart.void, [])),
    onLongPress: dart.nullable(dart.fnType(dart.void, [])),
    onScrollLeft: dart.nullable(dart.fnType(dart.void, [])),
    onScrollRight: dart.nullable(dart.fnType(dart.void, [])),
    onScrollUp: dart.nullable(dart.fnType(dart.void, [])),
    onScrollDown: dart.nullable(dart.fnType(dart.void, [])),
    onIncrease: dart.nullable(dart.fnType(dart.void, [])),
    onDecrease: dart.nullable(dart.fnType(dart.void, [])),
    onCopy: dart.nullable(dart.fnType(dart.void, [])),
    onCut: dart.nullable(dart.fnType(dart.void, [])),
    onPaste: dart.nullable(dart.fnType(dart.void, [])),
    onMoveCursorForwardByCharacter: dart.nullable(dart.fnType(dart.void, [core.bool])),
    onMoveCursorBackwardByCharacter: dart.nullable(dart.fnType(dart.void, [core.bool])),
    onMoveCursorForwardByWord: dart.nullable(dart.fnType(dart.void, [core.bool])),
    onMoveCursorBackwardByWord: dart.nullable(dart.fnType(dart.void, [core.bool])),
    onSetSelection: dart.nullable(dart.fnType(dart.void, [text_editing.TextSelection])),
    onDidGainAccessibilityFocus: dart.nullable(dart.fnType(dart.void, [])),
    onDidLoseAccessibilityFocus: dart.nullable(dart.fnType(dart.void, [])),
    customSemanticsActions: dart.nullable(core.Map$(semantics.CustomSemanticsAction, dart.fnType(dart.void, [])))
  }));
  dart.setLibraryUri(proxy_box.RenderSemanticsAnnotations, I[1]);
  dart.setFieldSignature(proxy_box.RenderSemanticsAnnotations, () => ({
    __proto__: dart.getFields(proxy_box.RenderSemanticsAnnotations.__proto__),
    [_container]: dart.fieldType(core.bool),
    [_explicitChildNodes]: dart.fieldType(core.bool),
    [_excludeSemantics]: dart.fieldType(core.bool),
    [_checked]: dart.fieldType(dart.nullable(core.bool)),
    [_enabled]: dart.fieldType(dart.nullable(core.bool)),
    [_selected]: dart.fieldType(dart.nullable(core.bool)),
    [_button]: dart.fieldType(dart.nullable(core.bool)),
    [_slider]: dart.fieldType(dart.nullable(core.bool)),
    [_link]: dart.fieldType(dart.nullable(core.bool)),
    [_header]: dart.fieldType(dart.nullable(core.bool)),
    [_textField]: dart.fieldType(dart.nullable(core.bool)),
    [_readOnly]: dart.fieldType(dart.nullable(core.bool)),
    [_focusable]: dart.fieldType(dart.nullable(core.bool)),
    [_focused]: dart.fieldType(dart.nullable(core.bool)),
    [_inMutuallyExclusiveGroup]: dart.fieldType(dart.nullable(core.bool)),
    [_obscured]: dart.fieldType(dart.nullable(core.bool)),
    [_multiline]: dart.fieldType(dart.nullable(core.bool)),
    [_scopesRoute]: dart.fieldType(dart.nullable(core.bool)),
    [_namesRoute]: dart.fieldType(dart.nullable(core.bool)),
    [_hidden]: dart.fieldType(dart.nullable(core.bool)),
    [_image]: dart.fieldType(dart.nullable(core.bool)),
    [_liveRegion]: dart.fieldType(dart.nullable(core.bool)),
    [_maxValueLength]: dart.fieldType(dart.nullable(core.int)),
    [_currentValueLength]: dart.fieldType(dart.nullable(core.int)),
    [_toggled]: dart.fieldType(dart.nullable(core.bool)),
    [_label]: dart.fieldType(dart.nullable(core.String)),
    [_value]: dart.fieldType(dart.nullable(core.String)),
    [_increasedValue]: dart.fieldType(dart.nullable(core.String)),
    [_decreasedValue]: dart.fieldType(dart.nullable(core.String)),
    [_hint]: dart.fieldType(dart.nullable(core.String)),
    [_hintOverrides]: dart.fieldType(dart.nullable(semantics.SemanticsHintOverrides)),
    [_textDirection]: dart.fieldType(dart.nullable(ui.TextDirection)),
    [_sortKey]: dart.fieldType(dart.nullable(semantics.SemanticsSortKey)),
    [_tagForChildren]: dart.fieldType(dart.nullable(semantics.SemanticsTag)),
    [_onTap]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onDismiss]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onLongPress]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onScrollLeft]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onScrollRight]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onScrollUp]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onScrollDown]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onIncrease]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onDecrease]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onCopy]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onCut]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onPaste]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onMoveCursorForwardByCharacter]: dart.fieldType(dart.nullable(dart.fnType(dart.void, [core.bool]))),
    [_onMoveCursorBackwardByCharacter]: dart.fieldType(dart.nullable(dart.fnType(dart.void, [core.bool]))),
    [_onMoveCursorForwardByWord]: dart.fieldType(dart.nullable(dart.fnType(dart.void, [core.bool]))),
    [_onMoveCursorBackwardByWord]: dart.fieldType(dart.nullable(dart.fnType(dart.void, [core.bool]))),
    [_onSetSelection]: dart.fieldType(dart.nullable(dart.fnType(dart.void, [text_editing.TextSelection]))),
    [_onDidGainAccessibilityFocus]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_onDidLoseAccessibilityFocus]: dart.fieldType(dart.nullable(dart.fnType(dart.void, []))),
    [_customSemanticsActions]: dart.fieldType(dart.nullable(core.Map$(semantics.CustomSemanticsAction, dart.fnType(dart.void, []))))
  }));
  var _blocking = dart.privateName(proxy_box, "_blocking");
  proxy_box.RenderBlockSemantics = class RenderBlockSemantics extends proxy_box.RenderProxyBox {
    get blocking() {
      return this[_blocking];
    }
    set blocking(value) {
      if (value == null) dart.nullFailed(I[0], 4857, 21, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 4858, 12, "value != null");
      if (value == this[_blocking]) return;
      this[_blocking] = value;
      this.markNeedsSemanticsUpdate();
    }
    describeSemanticsConfiguration(config) {
      if (config == null) dart.nullFailed(I[0], 4866, 62, "config");
      super.describeSemanticsConfiguration(config);
      config.isBlockingSemanticsOfPreviouslyPaintedNodes = this.blocking;
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 4872, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("blocking", this.blocking));
    }
  };
  (proxy_box.RenderBlockSemantics.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let blocking = opts && 'blocking' in opts ? opts.blocking : true;
    if (blocking == null) dart.nullFailed(I[0], 4849, 10, "blocking");
    this[_blocking] = blocking;
    proxy_box.RenderBlockSemantics.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderBlockSemantics.prototype;
  dart.addTypeTests(proxy_box.RenderBlockSemantics);
  dart.addTypeCaches(proxy_box.RenderBlockSemantics);
  dart.setGetterSignature(proxy_box.RenderBlockSemantics, () => ({
    __proto__: dart.getGetters(proxy_box.RenderBlockSemantics.__proto__),
    blocking: core.bool
  }));
  dart.setSetterSignature(proxy_box.RenderBlockSemantics, () => ({
    __proto__: dart.getSetters(proxy_box.RenderBlockSemantics.__proto__),
    blocking: core.bool
  }));
  dart.setLibraryUri(proxy_box.RenderBlockSemantics, I[1]);
  dart.setFieldSignature(proxy_box.RenderBlockSemantics, () => ({
    __proto__: dart.getFields(proxy_box.RenderBlockSemantics.__proto__),
    [_blocking]: dart.fieldType(core.bool)
  }));
  proxy_box.RenderMergeSemantics = class RenderMergeSemantics extends proxy_box.RenderProxyBox {
    describeSemanticsConfiguration(config) {
      let t2;
      if (config == null) dart.nullFailed(I[0], 4890, 62, "config");
      super.describeSemanticsConfiguration(config);
      t2 = config;
      (() => {
        t2.isSemanticBoundary = true;
        t2.isMergingSemanticsOfDescendants = true;
        return t2;
      })();
    }
  };
  (proxy_box.RenderMergeSemantics.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    proxy_box.RenderMergeSemantics.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderMergeSemantics.prototype;
  dart.addTypeTests(proxy_box.RenderMergeSemantics);
  dart.addTypeCaches(proxy_box.RenderMergeSemantics);
  dart.setLibraryUri(proxy_box.RenderMergeSemantics, I[1]);
  var _excluding = dart.privateName(proxy_box, "_excluding");
  proxy_box.RenderExcludeSemantics = class RenderExcludeSemantics extends proxy_box.RenderProxyBox {
    get excluding() {
      return this[_excluding];
    }
    set excluding(value) {
      if (value == null) dart.nullFailed(I[0], 4918, 22, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 4919, 12, "value != null");
      if (value == this[_excluding]) return;
      this[_excluding] = value;
      this.markNeedsSemanticsUpdate();
    }
    visitChildrenForSemantics(visitor) {
      if (visitor == null) dart.nullFailed(I[0], 4927, 54, "visitor");
      if (dart.test(this.excluding)) return;
      super.visitChildrenForSemantics(visitor);
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 4934, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("excluding", this.excluding));
    }
  };
  (proxy_box.RenderExcludeSemantics.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let excluding = opts && 'excluding' in opts ? opts.excluding : true;
    if (excluding == null) dart.nullFailed(I[0], 4909, 10, "excluding");
    this[_excluding] = excluding;
    proxy_box.RenderExcludeSemantics.__proto__.new.call(this, child);
    if (!(this[_excluding] != null)) dart.assertFailed(null, I[0], 4912, 12, "_excluding != null");
  }).prototype = proxy_box.RenderExcludeSemantics.prototype;
  dart.addTypeTests(proxy_box.RenderExcludeSemantics);
  dart.addTypeCaches(proxy_box.RenderExcludeSemantics);
  dart.setGetterSignature(proxy_box.RenderExcludeSemantics, () => ({
    __proto__: dart.getGetters(proxy_box.RenderExcludeSemantics.__proto__),
    excluding: core.bool
  }));
  dart.setSetterSignature(proxy_box.RenderExcludeSemantics, () => ({
    __proto__: dart.getSetters(proxy_box.RenderExcludeSemantics.__proto__),
    excluding: core.bool
  }));
  dart.setLibraryUri(proxy_box.RenderExcludeSemantics, I[1]);
  dart.setFieldSignature(proxy_box.RenderExcludeSemantics, () => ({
    __proto__: dart.getFields(proxy_box.RenderExcludeSemantics.__proto__),
    [_excluding]: dart.fieldType(core.bool)
  }));
  var _index = dart.privateName(proxy_box, "_index");
  proxy_box.RenderIndexedSemantics = class RenderIndexedSemantics extends proxy_box.RenderProxyBox {
    get index() {
      return this[_index];
    }
    set index(value) {
      if (value == null) dart.nullFailed(I[0], 4962, 17, "value");
      if (value == this.index) return;
      this[_index] = value;
      this.markNeedsSemanticsUpdate();
    }
    describeSemanticsConfiguration(config) {
      if (config == null) dart.nullFailed(I[0], 4970, 62, "config");
      super.describeSemanticsConfiguration(config);
      config.isSemanticBoundary = true;
      config.indexInParent = this.index;
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 4977, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfint()).new("index", this.index));
    }
  };
  (proxy_box.RenderIndexedSemantics.new = function(opts) {
    let child = opts && 'child' in opts ? opts.child : null;
    let index = opts && 'index' in opts ? opts.index : null;
    if (index == null) dart.nullFailed(I[0], 4954, 18, "index");
    if (!(index != null)) dart.assertFailed(null, I[0], 4955, 15, "index != null");
    this[_index] = index;
    proxy_box.RenderIndexedSemantics.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderIndexedSemantics.prototype;
  dart.addTypeTests(proxy_box.RenderIndexedSemantics);
  dart.addTypeCaches(proxy_box.RenderIndexedSemantics);
  dart.setGetterSignature(proxy_box.RenderIndexedSemantics, () => ({
    __proto__: dart.getGetters(proxy_box.RenderIndexedSemantics.__proto__),
    index: core.int
  }));
  dart.setSetterSignature(proxy_box.RenderIndexedSemantics, () => ({
    __proto__: dart.getSetters(proxy_box.RenderIndexedSemantics.__proto__),
    index: core.int
  }));
  dart.setLibraryUri(proxy_box.RenderIndexedSemantics, I[1]);
  dart.setFieldSignature(proxy_box.RenderIndexedSemantics, () => ({
    __proto__: dart.getFields(proxy_box.RenderIndexedSemantics.__proto__),
    [_index]: dart.fieldType(core.int)
  }));
  var _previousLayoutSize = dart.privateName(proxy_box, "_previousLayoutSize");
  proxy_box.RenderLeaderLayer = class RenderLeaderLayer extends proxy_box.RenderProxyBox {
    get link() {
      return this[_link];
    }
    set link(value) {
      if (value == null) dart.nullFailed(I[0], 5007, 22, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 5008, 12, "value != null");
      if (dart.equals(this[_link], value)) return;
      this[_link].leaderSize = null;
      this[_link] = value;
      if (this[_previousLayoutSize] != null) {
        this[_link].leaderSize = this[_previousLayoutSize];
      }
      this.markNeedsPaint();
    }
    get alwaysNeedsCompositing() {
      return true;
    }
    performLayout() {
      super.performLayout();
      this[_previousLayoutSize] = this.size;
      this.link.leaderSize = this.size;
    }
    paint(context, offset) {
      let t2;
      if (context == null) dart.nullFailed(I[0], 5035, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 5035, 46, "offset");
      if (this.layer == null) {
        this.layer = new layer.LeaderLayer.new({link: this.link, offset: offset});
      } else {
        let leaderLayer = layer.LeaderLayer.as(dart.nullCheck(this.layer));
        t2 = leaderLayer;
        (() => {
          t2.link = this.link;
          t2.offset = offset;
          return t2;
        })();
      }
      context.pushLayer(dart.nullCheck(this.layer), dart.bind(this, 'paint', super.paint), ui.Offset.zero);
      if (!(this.layer != null)) dart.assertFailed(null, I[0], 5045, 12, "layer != null");
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 5049, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfLayerLink()).new("link", this.link));
    }
  };
  (proxy_box.RenderLeaderLayer.new = function(opts) {
    let link = opts && 'link' in opts ? opts.link : null;
    if (link == null) dart.nullFailed(I[0], 4994, 24, "link");
    let child = opts && 'child' in opts ? opts.child : null;
    this[_previousLayoutSize] = null;
    if (!(link != null)) dart.assertFailed(null, I[0], 4996, 15, "link != null");
    this[_link] = link;
    proxy_box.RenderLeaderLayer.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderLeaderLayer.prototype;
  dart.addTypeTests(proxy_box.RenderLeaderLayer);
  dart.addTypeCaches(proxy_box.RenderLeaderLayer);
  dart.setGetterSignature(proxy_box.RenderLeaderLayer, () => ({
    __proto__: dart.getGetters(proxy_box.RenderLeaderLayer.__proto__),
    link: layer.LayerLink
  }));
  dart.setSetterSignature(proxy_box.RenderLeaderLayer, () => ({
    __proto__: dart.getSetters(proxy_box.RenderLeaderLayer.__proto__),
    link: layer.LayerLink
  }));
  dart.setLibraryUri(proxy_box.RenderLeaderLayer, I[1]);
  dart.setFieldSignature(proxy_box.RenderLeaderLayer, () => ({
    __proto__: dart.getFields(proxy_box.RenderLeaderLayer.__proto__),
    [_link]: dart.fieldType(layer.LayerLink),
    [_previousLayoutSize]: dart.fieldType(dart.nullable(ui.Size))
  }));
  var _showWhenUnlinked = dart.privateName(proxy_box, "_showWhenUnlinked");
  var _offset = dart.privateName(proxy_box, "_offset");
  var _leaderAnchor = dart.privateName(proxy_box, "_leaderAnchor");
  var _followerAnchor = dart.privateName(proxy_box, "_followerAnchor");
  var Rect_bottom = dart.privateName(ui, "Rect.bottom");
  var Rect_right = dart.privateName(ui, "Rect.right");
  var Rect_top = dart.privateName(ui, "Rect.top");
  var Rect_left = dart.privateName(ui, "Rect.left");
  proxy_box.RenderFollowerLayer = class RenderFollowerLayer extends proxy_box.RenderProxyBox {
    get link() {
      return this[_link];
    }
    set link(value) {
      if (value == null) dart.nullFailed(I[0], 5093, 22, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 5094, 12, "value != null");
      if (dart.equals(this[_link], value)) return;
      this[_link] = value;
      this.markNeedsPaint();
    }
    get showWhenUnlinked() {
      return this[_showWhenUnlinked];
    }
    set showWhenUnlinked(value) {
      if (value == null) dart.nullFailed(I[0], 5112, 29, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 5113, 12, "value != null");
      if (this[_showWhenUnlinked] == value) return;
      this[_showWhenUnlinked] = value;
      this.markNeedsPaint();
    }
    get offset() {
      return this[_offset];
    }
    set offset(value) {
      if (value == null) dart.nullFailed(I[0], 5124, 21, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 5125, 12, "value != null");
      if (dart.equals(this[_offset], value)) return;
      this[_offset] = value;
      this.markNeedsPaint();
    }
    get leaderAnchor() {
      return this[_leaderAnchor];
    }
    set leaderAnchor(value) {
      if (value == null) dart.nullFailed(I[0], 5148, 30, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 5149, 12, "value != null");
      if (dart.equals(this[_leaderAnchor], value)) return;
      this[_leaderAnchor] = value;
      this.markNeedsPaint();
    }
    get followerAnchor() {
      return this[_followerAnchor];
    }
    set followerAnchor(value) {
      if (value == null) dart.nullFailed(I[0], 5164, 32, "value");
      if (!(value != null)) dart.assertFailed(null, I[0], 5165, 12, "value != null");
      if (dart.equals(this[_followerAnchor], value)) return;
      this[_followerAnchor] = value;
      this.markNeedsPaint();
    }
    detach() {
      this.layer = null;
      super.detach();
    }
    get alwaysNeedsCompositing() {
      return true;
    }
    get layer() {
      return T$.FollowerLayerN().as(super.layer);
    }
    set layer(value) {
      super.layer = value;
    }
    getCurrentTransform() {
      let t2, t2$;
      t2$ = (t2 = this.layer, t2 == null ? null : t2.getLastTransform());
      return t2$ == null ? vector_math_64.Matrix4.identity() : t2$;
    }
    hitTest(result, opts) {
      if (result == null) dart.nullFailed(I[0], 5196, 33, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 5196, 59, "position");
      if (this.link.leader == null && !dart.test(this.showWhenUnlinked)) return false;
      return this.hitTestChildren(result, {position: position});
    }
    hitTestChildren(result, opts) {
      if (result == null) dart.nullFailed(I[0], 5208, 41, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[0], 5208, 67, "position");
      return result.addWithPaintTransform({transform: this.getCurrentTransform(), position: position, hitTest: dart.fn((result, position) => {
          if (result == null) dart.nullFailed(I[0], 5212, 34, "result");
          return super.hitTestChildren(result, {position: dart.nullCheck(position)});
        }, T$.BoxHitTestResultAndOffsetNTobool())});
    }
    paint(context, offset) {
      let t2;
      if (context == null) dart.nullFailed(I[0], 5219, 30, "context");
      if (offset == null) dart.nullFailed(I[0], 5219, 46, "offset");
      let leaderSize = this.link.leaderSize;
      if (!(this.link.leaderSize != null || this.link.leader == null || dart.equals(this.leaderAnchor, alignment.Alignment.topLeft))) dart.assertFailed(dart.str(this.link) + ": layer is linked to " + dart.str(this.link.leader) + " but a valid leaderSize is not set. " + "leaderSize is required when leaderAnchor is not Alignment.topLeft" + "(current value is " + dart.str(this.leaderAnchor) + ").", I[0], 5222, 7, "link.leaderSize != null || (link.leader == null || leaderAnchor == Alignment.topLeft)");
      let effectiveLinkedOffset = leaderSize == null ? this.offset : this.leaderAnchor.alongSize(leaderSize)['-'](this.followerAnchor.alongSize(this.size))['+'](this.offset);
      if (!(this.showWhenUnlinked != null)) dart.assertFailed(null, I[0], 5230, 12, "showWhenUnlinked != null");
      if (this.layer == null) {
        this.layer = new layer.FollowerLayer.new({link: this.link, showWhenUnlinked: this.showWhenUnlinked, linkedOffset: effectiveLinkedOffset, unlinkedOffset: offset});
      } else {
        t2 = this.layer;
        t2 == null ? null : (() => {
          t2.link = this.link;
          t2.showWhenUnlinked = this.showWhenUnlinked;
          t2.linkedOffset = effectiveLinkedOffset;
          t2.unlinkedOffset = offset;
          return t2;
        })();
      }
      context.pushLayer(dart.nullCheck(this.layer), dart.bind(this, 'paint', super.paint), ui.Offset.zero, {childPaintBounds: C[31] || CT.C31});
    }
    applyPaintTransform(child, transform) {
      box.RenderBox.as(child);
      if (child == null) dart.nullFailed(I[0], 5260, 38, "child");
      if (transform == null) dart.nullFailed(I[0], 5260, 53, "transform");
      transform.multiply(this.getCurrentTransform());
    }
    debugFillProperties(properties) {
      if (properties == null) dart.nullFailed(I[0], 5265, 56, "properties");
      super.debugFillProperties(properties);
      properties.add(new (T$.DiagnosticsPropertyOfLayerLink()).new("link", this.link));
      properties.add(new (T$.DiagnosticsPropertyOfbool()).new("showWhenUnlinked", this.showWhenUnlinked));
      properties.add(new (T$.DiagnosticsPropertyOfOffset()).new("offset", this.offset));
      properties.add(new matrix_utils.TransformProperty.new("current transform matrix", this.getCurrentTransform()));
    }
  };
  (proxy_box.RenderFollowerLayer.new = function(opts) {
    let link = opts && 'link' in opts ? opts.link : null;
    if (link == null) dart.nullFailed(I[0], 5073, 24, "link");
    let showWhenUnlinked = opts && 'showWhenUnlinked' in opts ? opts.showWhenUnlinked : true;
    if (showWhenUnlinked == null) dart.nullFailed(I[0], 5074, 10, "showWhenUnlinked");
    let offset = opts && 'offset' in opts ? opts.offset : C[29] || CT.C29;
    if (offset == null) dart.nullFailed(I[0], 5075, 12, "offset");
    let leaderAnchor = opts && 'leaderAnchor' in opts ? opts.leaderAnchor : C[30] || CT.C30;
    if (leaderAnchor == null) dart.nullFailed(I[0], 5076, 15, "leaderAnchor");
    let followerAnchor = opts && 'followerAnchor' in opts ? opts.followerAnchor : C[30] || CT.C30;
    if (followerAnchor == null) dart.nullFailed(I[0], 5077, 15, "followerAnchor");
    let child = opts && 'child' in opts ? opts.child : null;
    if (!(link != null)) dart.assertFailed(null, I[0], 5079, 15, "link != null");
    if (!(showWhenUnlinked != null)) dart.assertFailed(null, I[0], 5080, 15, "showWhenUnlinked != null");
    if (!(offset != null)) dart.assertFailed(null, I[0], 5081, 15, "offset != null");
    this[_link] = link;
    this[_showWhenUnlinked] = showWhenUnlinked;
    this[_offset] = offset;
    this[_leaderAnchor] = leaderAnchor;
    this[_followerAnchor] = followerAnchor;
    proxy_box.RenderFollowerLayer.__proto__.new.call(this, child);
    ;
  }).prototype = proxy_box.RenderFollowerLayer.prototype;
  dart.addTypeTests(proxy_box.RenderFollowerLayer);
  dart.addTypeCaches(proxy_box.RenderFollowerLayer);
  dart.setMethodSignature(proxy_box.RenderFollowerLayer, () => ({
    __proto__: dart.getMethods(proxy_box.RenderFollowerLayer.__proto__),
    getCurrentTransform: dart.fnType(vector_math_64.Matrix4, [])
  }));
  dart.setGetterSignature(proxy_box.RenderFollowerLayer, () => ({
    __proto__: dart.getGetters(proxy_box.RenderFollowerLayer.__proto__),
    link: layer.LayerLink,
    showWhenUnlinked: core.bool,
    offset: ui.Offset,
    leaderAnchor: alignment.Alignment,
    followerAnchor: alignment.Alignment,
    layer: dart.nullable(layer.FollowerLayer)
  }));
  dart.setSetterSignature(proxy_box.RenderFollowerLayer, () => ({
    __proto__: dart.getSetters(proxy_box.RenderFollowerLayer.__proto__),
    link: layer.LayerLink,
    showWhenUnlinked: core.bool,
    offset: ui.Offset,
    leaderAnchor: alignment.Alignment,
    followerAnchor: alignment.Alignment
  }));
  dart.setLibraryUri(proxy_box.RenderFollowerLayer, I[1]);
  dart.setFieldSignature(proxy_box.RenderFollowerLayer, () => ({
    __proto__: dart.getFields(proxy_box.RenderFollowerLayer.__proto__),
    [_link]: dart.fieldType(layer.LayerLink),
    [_showWhenUnlinked]: dart.fieldType(core.bool),
    [_offset]: dart.fieldType(ui.Offset),
    [_leaderAnchor]: dart.fieldType(alignment.Alignment),
    [_followerAnchor]: dart.fieldType(alignment.Alignment)
  }));
  var alwaysNeedsCompositing = dart.privateName(proxy_box, "RenderAnnotatedRegion.alwaysNeedsCompositing");
  var _sized = dart.privateName(proxy_box, "_sized");
  const _is_RenderAnnotatedRegion_default = Symbol('_is_RenderAnnotatedRegion_default');
  proxy_box.RenderAnnotatedRegion$ = dart.generic(T => {
    var AnnotatedRegionLayerOfT = () => (AnnotatedRegionLayerOfT = dart.constFn(layer.AnnotatedRegionLayer$(T)))();
    class RenderAnnotatedRegion extends proxy_box.RenderProxyBox {
      get alwaysNeedsCompositing() {
        return this[alwaysNeedsCompositing];
      }
      set alwaysNeedsCompositing(value) {
        super.alwaysNeedsCompositing = value;
      }
      get value() {
        return this[_value];
      }
      set value(newValue) {
        T.as(newValue);
        if (newValue == null) dart.nullFailed(I[0], 5302, 16, "newValue");
        if (dart.equals(this[_value], newValue)) return;
        this[_value] = newValue;
        this.markNeedsPaint();
      }
      get sized() {
        return this[_sized];
      }
      set sized(value) {
        if (value == null) dart.nullFailed(I[0], 5312, 18, "value");
        if (this[_sized] == value) return;
        this[_sized] = value;
        this.markNeedsPaint();
      }
      paint(context, offset) {
        if (context == null) dart.nullFailed(I[0], 5323, 30, "context");
        if (offset == null) dart.nullFailed(I[0], 5323, 46, "offset");
        let layer = new (AnnotatedRegionLayerOfT()).new(this.value, {size: dart.test(this.sized) ? this.size : null, offset: dart.test(this.sized) ? offset : null});
        context.pushLayer(layer, dart.bind(this, 'paint', super.paint), offset);
      }
    }
    (RenderAnnotatedRegion.new = function(opts) {
      let value = opts && 'value' in opts ? opts.value : null;
      if (value == null) dart.nullFailed(I[0], 5290, 16, "value");
      let sized = opts && 'sized' in opts ? opts.sized : null;
      if (sized == null) dart.nullFailed(I[0], 5291, 19, "sized");
      let child = opts && 'child' in opts ? opts.child : null;
      this[alwaysNeedsCompositing] = true;
      if (!(value != null)) dart.assertFailed(null, I[0], 5293, 15, "value != null");
      if (!(sized != null)) dart.assertFailed(null, I[0], 5294, 15, "sized != null");
      this[_value] = value;
      this[_sized] = sized;
      RenderAnnotatedRegion.__proto__.new.call(this, child);
      ;
    }).prototype = RenderAnnotatedRegion.prototype;
    dart.addTypeTests(RenderAnnotatedRegion);
    RenderAnnotatedRegion.prototype[_is_RenderAnnotatedRegion_default] = true;
    dart.addTypeCaches(RenderAnnotatedRegion);
    dart.setGetterSignature(RenderAnnotatedRegion, () => ({
      __proto__: dart.getGetters(RenderAnnotatedRegion.__proto__),
      value: T,
      sized: core.bool
    }));
    dart.setSetterSignature(RenderAnnotatedRegion, () => ({
      __proto__: dart.getSetters(RenderAnnotatedRegion.__proto__),
      value: dart.nullable(core.Object),
      sized: core.bool
    }));
    dart.setLibraryUri(RenderAnnotatedRegion, I[1]);
    dart.setFieldSignature(RenderAnnotatedRegion, () => ({
      __proto__: dart.getFields(RenderAnnotatedRegion.__proto__),
      [_value]: dart.fieldType(T),
      [_sized]: dart.fieldType(core.bool),
      alwaysNeedsCompositing: dart.finalFieldType(core.bool)
    }));
    return RenderAnnotatedRegion;
  });
  proxy_box.RenderAnnotatedRegion = proxy_box.RenderAnnotatedRegion$();
  dart.addTypeTests(proxy_box.RenderAnnotatedRegion, _is_RenderAnnotatedRegion_default);
  dart.trackLibraries("packages/flutter/src/rendering/proxy_box.dart", {
    "package:flutter/src/rendering/proxy_box.dart": proxy_box
  }, {
  }, 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  // Exports:
  return {
    src__rendering__proxy_box: proxy_box
  };
}));

//# sourceMappingURL=proxy_box.dart.lib.js.map