f_00005b

define(['dart_sdk', 'packages/flutter/src/foundation/object.dart', 'packages/flutter/src/rendering/layer.dart', 'packages/flutter/src/foundation/change_notifier.dart', 'packages/vector_math/vector_math_64.dart', 'packages/flutter/src/foundation/debug.dart'], (function load__packages__flutter__src__rendering__flow_dart(dart_sdk, packages__flutter__src__foundation__object$46dart, packages__flutter__src__rendering__layer$46dart, packages__flutter__src__foundation__change_notifier$46dart, packages__vector_math__vector_math_64$46dart, packages__flutter__src__foundation__debug$46dart) {
  'use strict';
  const core = dart_sdk.core;
  const ui = dart_sdk.ui;
  const _interceptors = dart_sdk._interceptors;
  const dart = dart_sdk.dart;
  const dartx = dart_sdk.dartx;
  const object = packages__flutter__src__foundation__object$46dart.src__foundation__object;
  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 change_notifier = packages__flutter__src__foundation__change_notifier$46dart.src__foundation__change_notifier;
  const vector_math_64 = packages__vector_math__vector_math_64$46dart.vector_math_64;
  const assertions = packages__flutter__src__foundation__debug$46dart.src__foundation__assertions;
  var flow = Object.create(dart.library);
  var $runtimeType = dartx.runtimeType;
  var $isFinite = dartx.isFinite;
  var $clear = dartx.clear;
  var $add = dartx.add;
  var $length = dartx.length;
  var $_get = dartx._get;
  dart._checkModuleNullSafetyMode(false);
  var T = {
    JSArrayOfRenderBox: () => (T.JSArrayOfRenderBox = dart.constFn(_interceptors.JSArray$(box.RenderBox)))(),
    JSArrayOfint: () => (T.JSArrayOfint = dart.constFn(_interceptors.JSArray$(core.int)))(),
    VoidTobool: () => (T.VoidTobool = dart.constFn(dart.fnType(core.bool, [])))(),
    PaintingContextAndOffsetTovoid: () => (T.PaintingContextAndOffsetTovoid = dart.constFn(dart.fnType(dart.void, [object$.PaintingContext, ui.Offset])))(),
    OffsetN: () => (T.OffsetN = dart.constFn(dart.nullable(ui.Offset)))(),
    BoxHitTestResultAndOffsetNTobool: () => (T.BoxHitTestResultAndOffsetNTobool = dart.constFn(dart.fnType(core.bool, [box.BoxHitTestResult, T.OffsetN()])))()
  };
  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__: ui.Clip.prototype,
        [_name]: "Clip.hardEdge",
        index: 1
      });
    }
  }, false);
  var C = [void 0];
  var I = [
    "package:flutter/src/rendering/flow.dart",
    "file:///C:/Users/Luca/Documents/flutter/flutter_windows_1.22.5-stable/flutter/packages/flutter/lib/src/rendering/flow.dart"
  ];
  flow.FlowPaintingContext = class FlowPaintingContext extends core.Object {};
  (flow.FlowPaintingContext.new = function() {
    ;
  }).prototype = flow.FlowPaintingContext.prototype;
  dart.addTypeTests(flow.FlowPaintingContext);
  dart.addTypeCaches(flow.FlowPaintingContext);
  dart.setLibraryUri(flow.FlowPaintingContext, I[0]);
  var _repaint = dart.privateName(flow, "FlowDelegate._repaint");
  var _repaint$ = dart.privateName(flow, "_repaint");
  flow.FlowDelegate = class FlowDelegate extends core.Object {
    get [_repaint$]() {
      return this[_repaint];
    }
    set [_repaint$](value) {
      super[_repaint$] = value;
    }
    getSize(constraints) {
      if (constraints == null) dart.nullFailed(I[1], 75, 31, "constraints");
      return constraints.biggest;
    }
    getConstraintsForChild(i, constraints) {
      if (i == null) dart.nullFailed(I[1], 90, 45, "i");
      if (constraints == null) dart.nullFailed(I[1], 90, 63, "constraints");
      return constraints;
    }
    shouldRelayout(oldDelegate) {
      flow.FlowDelegate.as(oldDelegate);
      if (oldDelegate == null) dart.nullFailed(I[1], 114, 46, "oldDelegate");
      return false;
    }
    toString() {
      return object.objectRuntimeType(this, "FlowDelegate");
    }
  };
  (flow.FlowDelegate.new = function(opts) {
    let repaint = opts && 'repaint' in opts ? opts.repaint : null;
    this[_repaint] = repaint;
    ;
  }).prototype = flow.FlowDelegate.prototype;
  dart.addTypeTests(flow.FlowDelegate);
  dart.addTypeCaches(flow.FlowDelegate);
  dart.setMethodSignature(flow.FlowDelegate, () => ({
    __proto__: dart.getMethods(flow.FlowDelegate.__proto__),
    getSize: dart.fnType(ui.Size, [box.BoxConstraints]),
    getConstraintsForChild: dart.fnType(box.BoxConstraints, [core.int, box.BoxConstraints]),
    shouldRelayout: dart.fnType(core.bool, [dart.nullable(core.Object)])
  }));
  dart.setLibraryUri(flow.FlowDelegate, I[0]);
  dart.setFieldSignature(flow.FlowDelegate, () => ({
    __proto__: dart.getFields(flow.FlowDelegate.__proto__),
    [_repaint$]: dart.finalFieldType(dart.nullable(change_notifier.Listenable))
  }));
  dart.defineExtensionMethods(flow.FlowDelegate, ['toString']);
  var _transform = dart.privateName(flow, "_transform");
  flow.FlowParentData = class FlowParentData extends box.ContainerBoxParentData$(box.RenderBox) {};
  (flow.FlowParentData.new = function() {
    this[_transform] = null;
    flow.FlowParentData.__proto__.new.call(this);
    ;
  }).prototype = flow.FlowParentData.prototype;
  dart.addTypeTests(flow.FlowParentData);
  dart.addTypeCaches(flow.FlowParentData);
  dart.setLibraryUri(flow.FlowParentData, I[0]);
  dart.setFieldSignature(flow.FlowParentData, () => ({
    __proto__: dart.getFields(flow.FlowParentData.__proto__),
    [_transform]: dart.fieldType(dart.nullable(vector_math_64.Matrix4))
  }));
  var _name = dart.privateName(ui, "_name");
  var _clipBehavior = dart.privateName(flow, "_clipBehavior");
  var _randomAccessChildren = dart.privateName(flow, "_randomAccessChildren");
  var _lastPaintOrder = dart.privateName(flow, "_lastPaintOrder");
  var _paintingContext = dart.privateName(flow, "_paintingContext");
  var _paintingOffset = dart.privateName(flow, "_paintingOffset");
  var _clipRectLayer = dart.privateName(flow, "_clipRectLayer");
  var _delegate = dart.privateName(flow, "_delegate");
  var _getSize = dart.privateName(flow, "_getSize");
  var _paintWithDelegate = dart.privateName(flow, "_paintWithDelegate");
  const RenderBox_ContainerRenderObjectMixin$36 = class RenderBox_ContainerRenderObjectMixin extends box.RenderBox {};
  (RenderBox_ContainerRenderObjectMixin$36.new = function() {
    object$.ContainerRenderObjectMixin$(box.RenderBox, flow.FlowParentData)[dart.mixinNew].call(this);
    RenderBox_ContainerRenderObjectMixin$36.__proto__.new.call(this);
  }).prototype = RenderBox_ContainerRenderObjectMixin$36.prototype;
  dart.applyMixin(RenderBox_ContainerRenderObjectMixin$36, object$.ContainerRenderObjectMixin$(box.RenderBox, flow.FlowParentData));
  const RenderBox_RenderBoxContainerDefaultsMixin$36 = class RenderBox_RenderBoxContainerDefaultsMixin extends RenderBox_ContainerRenderObjectMixin$36 {};
  (RenderBox_RenderBoxContainerDefaultsMixin$36.new = function() {
    RenderBox_RenderBoxContainerDefaultsMixin$36.__proto__.new.call(this);
  }).prototype = RenderBox_RenderBoxContainerDefaultsMixin$36.prototype;
  dart.applyMixin(RenderBox_RenderBoxContainerDefaultsMixin$36, box.RenderBoxContainerDefaultsMixin$(box.RenderBox, flow.FlowParentData));
  flow.RenderFlow = class RenderFlow extends RenderBox_RenderBoxContainerDefaultsMixin$36 {
    setupParentData(child) {
      box.RenderBox.as(child);
      if (child == null) dart.nullFailed(I[1], 194, 34, "child");
      let childParentData = child.parentData;
      if (flow.FlowParentData.is(childParentData))
        childParentData[_transform] = null;
      else
        child.parentData = new flow.FlowParentData.new();
    }
    get delegate() {
      return this[_delegate];
    }
    set delegate(newDelegate) {
      let t0, t0$;
      if (newDelegate == null) dart.nullFailed(I[1], 210, 29, "newDelegate");
      if (!(newDelegate != null)) dart.assertFailed(null, I[1], 211, 12, "newDelegate != null");
      if (dart.equals(this[_delegate], newDelegate)) return;
      let oldDelegate = this[_delegate];
      this[_delegate] = newDelegate;
      if (!dart.equals(dart.runtimeType(newDelegate), dart.runtimeType(oldDelegate)) || dart.test(newDelegate.shouldRelayout(oldDelegate)))
        this.markNeedsLayout();
      else if (dart.test(newDelegate.shouldRepaint(oldDelegate))) this.markNeedsPaint();
      if (dart.test(this.attached)) {
        t0 = oldDelegate[_repaint$];
        t0 == null ? null : t0.removeListener(dart.bind(this, 'markNeedsPaint'));
        t0$ = newDelegate[_repaint$];
        t0$ == null ? null : t0$.addListener(dart.bind(this, 'markNeedsPaint'));
      }
    }
    get clipBehavior() {
      return this[_clipBehavior];
    }
    set clipBehavior(value) {
      if (value == null) dart.nullFailed(I[1], 233, 25, "value");
      if (!(value != null)) dart.assertFailed(null, I[1], 234, 12, "value != null");
      if (value != this[_clipBehavior]) {
        this[_clipBehavior] = value;
        this.markNeedsPaint();
        this.markNeedsSemanticsUpdate();
      }
    }
    attach(owner) {
      let t0;
      object$.PipelineOwner.as(owner);
      if (owner == null) dart.nullFailed(I[1], 243, 29, "owner");
      super.attach(owner);
      t0 = this[_delegate][_repaint$];
      t0 == null ? null : t0.addListener(dart.bind(this, 'markNeedsPaint'));
    }
    detach() {
      let t0;
      t0 = this[_delegate][_repaint$];
      t0 == null ? null : t0.removeListener(dart.bind(this, 'markNeedsPaint'));
      super.detach();
    }
    [_getSize](constraints) {
      if (constraints == null) dart.nullFailed(I[1], 254, 32, "constraints");
      if (!dart.test(constraints.debugAssertIsValid())) dart.assertFailed(null, I[1], 255, 12, "constraints.debugAssertIsValid()");
      return constraints.constrain(this[_delegate].getSize(constraints));
    }
    get isRepaintBoundary() {
      return true;
    }
    computeMinIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[1], 267, 42, "height");
      let width = this[_getSize](new box.BoxConstraints.tightForFinite({height: height})).width;
      if (width[$isFinite]) return width;
      return 0.0;
    }
    computeMaxIntrinsicWidth(height) {
      if (height == null) dart.nullFailed(I[1], 275, 42, "height");
      let width = this[_getSize](new box.BoxConstraints.tightForFinite({height: height})).width;
      if (width[$isFinite]) return width;
      return 0.0;
    }
    computeMinIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[1], 283, 43, "width");
      let height = this[_getSize](new box.BoxConstraints.tightForFinite({width: width})).height;
      if (height[$isFinite]) return height;
      return 0.0;
    }
    computeMaxIntrinsicHeight(width) {
      if (width == null) dart.nullFailed(I[1], 291, 43, "width");
      let height = this[_getSize](new box.BoxConstraints.tightForFinite({width: width})).height;
      if (height[$isFinite]) return height;
      return 0.0;
    }
    computeDryLayout(constraints) {
      if (constraints == null) dart.nullFailed(I[1], 299, 40, "constraints");
      return this[_getSize](constraints);
    }
    performLayout() {
      let constraints = this.constraints;
      this.size = this[_getSize](constraints);
      let i = 0;
      this[_randomAccessChildren][$clear]();
      let child = this.firstChild;
      while (child != null) {
        this[_randomAccessChildren][$add](child);
        let innerConstraints = this[_delegate].getConstraintsForChild(i, constraints);
        child.layout(innerConstraints, {parentUsesSize: true});
        let childParentData = flow.FlowParentData.as(dart.nullCheck(child.parentData));
        childParentData.offset = ui.Offset.zero;
        child = childParentData.nextSibling;
        i = i + 1;
      }
    }
    getChildSize(i) {
      if (i == null) dart.nullFailed(I[1], 332, 26, "i");
      if (dart.notNull(i) < 0 || dart.notNull(i) >= dart.notNull(this[_randomAccessChildren][$length])) return null;
      return this[_randomAccessChildren][$_get](i).size;
    }
    paintChild(i, opts) {
      if (i == null) dart.nullFailed(I[1], 339, 23, "i");
      let transform = opts && 'transform' in opts ? opts.transform : null;
      let opacity = opts && 'opacity' in opts ? opts.opacity : 1;
      if (opacity == null) dart.nullFailed(I[1], 339, 55, "opacity");
      transform == null ? transform = vector_math_64.Matrix4.identity() : null;
      let child = this[_randomAccessChildren][$_get](i);
      let childParentData = flow.FlowParentData.as(dart.nullCheck(child.parentData));
      if (!dart.test(dart.fn(() => {
        if (childParentData[_transform] != null) {
          dart.throw(assertions.FlutterError.new("Cannot call paintChild twice for the same child.\n" + "The flow delegate of type " + dart.str(dart.runtimeType(this[_delegate])) + " attempted to " + "paint child " + dart.str(i) + " multiple times, which is not permitted."));
        }
        return true;
      }, T.VoidTobool())())) dart.assertFailed(null, I[1], 343, 12, "() {\r\n      if (childParentData._transform != null) {\r\n        throw FlutterError(\r\n          'Cannot call paintChild twice for the same child.\\n'\r\n          'The flow delegate of type ${_delegate.runtimeType} attempted to '\r\n          'paint child $i multiple times, which is not permitted.'\r\n        );\r\n      }\r\n      return true;\r\n    }()");
      this[_lastPaintOrder][$add](i);
      childParentData[_transform] = transform;
      if (opacity === 0.0) return;
      function painter(context, offset) {
        if (context == null) dart.nullFailed(I[1], 361, 34, "context");
        if (offset == null) dart.nullFailed(I[1], 361, 50, "offset");
        context.paintChild(child, offset);
      }
      dart.fn(painter, T.PaintingContextAndOffsetTovoid());
      if (opacity === 1.0) {
        dart.nullCheck(this[_paintingContext]).pushTransform(this.needsCompositing, dart.nullCheck(this[_paintingOffset]), transform, painter);
      } else {
        dart.nullCheck(this[_paintingContext]).pushOpacity(dart.nullCheck(this[_paintingOffset]), ui.Color.getAlphaFromOpacity(opacity), dart.fn((context, offset) => {
          if (context == null) dart.nullFailed(I[1], 367, 111, "context");
          if (offset == null) dart.nullFailed(I[1], 367, 127, "offset");
          context.pushTransform(this.needsCompositing, offset, dart.nullCheck(transform), painter);
        }, T.PaintingContextAndOffsetTovoid()));
      }
    }
    [_paintWithDelegate](context, offset) {
      if (context == null) dart.nullFailed(I[1], 373, 43, "context");
      if (offset == null) dart.nullFailed(I[1], 373, 59, "offset");
      this[_lastPaintOrder][$clear]();
      this[_paintingContext] = context;
      this[_paintingOffset] = offset;
      for (let child of this[_randomAccessChildren]) {
        let childParentData = flow.FlowParentData.as(dart.nullCheck(child.parentData));
        childParentData[_transform] = null;
      }
      try {
        this[_delegate].paintChildren(this);
      } finally {
        this[_paintingContext] = null;
        this[_paintingOffset] = null;
      }
    }
    paint(context, offset) {
      if (context == null) dart.nullFailed(I[1], 390, 30, "context");
      if (offset == null) dart.nullFailed(I[1], 390, 46, "offset");
      if (this.clipBehavior == ui.Clip.none) {
        this[_clipRectLayer] = null;
        this[_paintWithDelegate](context, offset);
      } else {
        this[_clipRectLayer] = context.pushClipRect(this.needsCompositing, offset, ui.Offset.zero['&'](this.size), dart.bind(this, _paintWithDelegate), {clipBehavior: this.clipBehavior, oldLayer: this[_clipRectLayer]});
      }
    }
    hitTestChildren(result, opts) {
      if (result == null) dart.nullFailed(I[1], 403, 41, "result");
      let position = opts && 'position' in opts ? opts.position : null;
      if (position == null) dart.nullFailed(I[1], 403, 67, "position");
      let children = this.getChildrenAsList();
      for (let i = dart.notNull(this[_lastPaintOrder][$length]) - 1; i >= 0; i = i - 1) {
        let childIndex = this[_lastPaintOrder][$_get](i);
        if (dart.notNull(childIndex) >= dart.notNull(children[$length])) continue;
        let child = children[$_get](childIndex);
        let childParentData = flow.FlowParentData.as(dart.nullCheck(child.parentData));
        let transform = childParentData[_transform];
        if (transform == null) continue;
        let absorbed = result.addWithPaintTransform({transform: transform, position: position, hitTest: dart.fn((result, position) => {
            if (result == null) dart.nullFailed(I[1], 417, 36, "result");
            return child.hitTest(result, {position: dart.nullCheck(position)});
          }, T.BoxHitTestResultAndOffsetNTobool())});
        if (dart.test(absorbed)) return true;
      }
      return false;
    }
    applyPaintTransform(child, transform) {
      box.RenderBox.as(child);
      if (child == null) dart.nullFailed(I[1], 428, 38, "child");
      if (transform == null) dart.nullFailed(I[1], 428, 53, "transform");
      let childParentData = flow.FlowParentData.as(dart.nullCheck(child.parentData));
      if (childParentData[_transform] != null) transform.multiply(dart.nullCheck(childParentData[_transform]));
      super.applyPaintTransform(child, transform);
    }
  };
  (flow.RenderFlow.new = function(opts) {
    let children = opts && 'children' in opts ? opts.children : null;
    let delegate = opts && 'delegate' in opts ? opts.delegate : null;
    if (delegate == null) dart.nullFailed(I[1], 184, 27, "delegate");
    let clipBehavior = opts && 'clipBehavior' in opts ? opts.clipBehavior : C[0] || CT.C0;
    if (clipBehavior == null) dart.nullFailed(I[1], 185, 10, "clipBehavior");
    this[_clipBehavior] = ui.Clip.hardEdge;
    this[_randomAccessChildren] = T.JSArrayOfRenderBox().of([]);
    this[_lastPaintOrder] = T.JSArrayOfint().of([]);
    this[_paintingContext] = null;
    this[_paintingOffset] = null;
    this[_clipRectLayer] = null;
    if (!(delegate != null)) dart.assertFailed(null, I[1], 186, 15, "delegate != null");
    if (!(clipBehavior != null)) dart.assertFailed(null, I[1], 187, 15, "clipBehavior != null");
    this[_delegate] = delegate;
    this[_clipBehavior] = clipBehavior;
    flow.RenderFlow.__proto__.new.call(this);
    this.addAll(children);
  }).prototype = flow.RenderFlow.prototype;
  dart.addTypeTests(flow.RenderFlow);
  dart.addTypeCaches(flow.RenderFlow);
  flow.RenderFlow[dart.implements] = () => [flow.FlowPaintingContext];
  dart.setMethodSignature(flow.RenderFlow, () => ({
    __proto__: dart.getMethods(flow.RenderFlow.__proto__),
    [_getSize]: dart.fnType(ui.Size, [box.BoxConstraints]),
    getChildSize: dart.fnType(dart.nullable(ui.Size), [core.int]),
    paintChild: dart.fnType(dart.void, [core.int], {opacity: core.double, transform: dart.nullable(vector_math_64.Matrix4)}, {}),
    [_paintWithDelegate]: dart.fnType(dart.void, [object$.PaintingContext, ui.Offset])
  }));
  dart.setGetterSignature(flow.RenderFlow, () => ({
    __proto__: dart.getGetters(flow.RenderFlow.__proto__),
    delegate: flow.FlowDelegate,
    clipBehavior: ui.Clip
  }));
  dart.setSetterSignature(flow.RenderFlow, () => ({
    __proto__: dart.getSetters(flow.RenderFlow.__proto__),
    delegate: flow.FlowDelegate,
    clipBehavior: ui.Clip
  }));
  dart.setLibraryUri(flow.RenderFlow, I[0]);
  dart.setFieldSignature(flow.RenderFlow, () => ({
    __proto__: dart.getFields(flow.RenderFlow.__proto__),
    [_delegate]: dart.fieldType(flow.FlowDelegate),
    [_clipBehavior]: dart.fieldType(ui.Clip),
    [_randomAccessChildren]: dart.finalFieldType(core.List$(box.RenderBox)),
    [_lastPaintOrder]: dart.finalFieldType(core.List$(core.int)),
    [_paintingContext]: dart.fieldType(dart.nullable(object$.PaintingContext)),
    [_paintingOffset]: dart.fieldType(dart.nullable(ui.Offset)),
    [_clipRectLayer]: dart.fieldType(dart.nullable(layer.ClipRectLayer))
  }));
  dart.trackLibraries("packages/flutter/src/rendering/flow.dart", {
    "package:flutter/src/rendering/flow.dart": flow
  }, {
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  // Exports:
  return {
    src__rendering__flow: flow
  };
}));

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