Rename RenderNode to RenderObject.

sky/sdk/lib/framework/rendering/object.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import '../node.dart';
 import '../scheduler.dart' as scheduler;
 import 'dart:math' as math;
 import 'dart:sky' as sky;
 
 class ParentData {
   void detach() {
     detachSiblings();
   }
   void detachSiblings() { } // workaround for lack of inter-class mixins in Dart
   void merge(ParentData other) {
     // override this in subclasses to merge in data from other into this
     assert(other.runtimeType == this.runtimeType);
   }
 }
 
 const kLayoutDirections = 4;
 
 double clamp({double min: 0.0, double value: 0.0, double max: double.INFINITY}) {
   assert(min != null);
   assert(value != null);
   assert(max != null);
   return math.max(min, math.min(max, value));
 }
 
-class RenderNodeDisplayList extends sky.PictureRecorder {
-  RenderNodeDisplayList(double width, double height) : super(width, height);
-  void paintChild(RenderNode child, sky.Point position) {
+class RenderObjectDisplayList extends sky.PictureRecorder {
+  RenderObjectDisplayList(double width, double height) : super(width, height);
+  void paintChild(RenderObject child, sky.Point position) {
     translate(position.x, position.y);
     child.paint(this);
     translate(-position.x, -position.y);
   }
 }
 
-abstract class RenderNode extends AbstractNode {
+abstract class RenderObject extends AbstractNode {
 
   // LAYOUT
 
-  // parentData is only for use by the RenderNode that actually lays this
+  // parentData is only for use by the RenderObject that actually lays this
   // node out, and any other nodes who happen to know exactly what
   // kind of node that is.
   ParentData parentData;
-  void setParentData(RenderNode child) {
+  void setParentData(RenderObject child) {
     // override this to setup .parentData correctly for your class
     if (child.parentData is! ParentData)
       child.parentData = new ParentData();
   }
 
-  void adoptChild(RenderNode child) { // only for use by subclasses
+  void adoptChild(RenderObject child) { // only for use by subclasses
     // call this whenever you decide a node is a child
     assert(child != null);
     setParentData(child);
     super.adoptChild(child);
   }
-  void dropChild(RenderNode child) { // only for use by subclasses
+  void dropChild(RenderObject child) { // only for use by subclasses
     assert(child != null);
     assert(child.parentData != null);
     child.parentData.detach();
     super.dropChild(child);
   }
 
-  static List<RenderNode> _nodesNeedingLayout = new List<RenderNode>();
+  static List<RenderObject> _nodesNeedingLayout = new List<RenderObject>();
   static bool _debugDoingLayout = false;
   bool _needsLayout = true;
   bool get needsLayout => _needsLayout;
-  RenderNode _relayoutSubtreeRoot;
+  RenderObject _relayoutSubtreeRoot;
   dynamic _constraints;
   dynamic get constraints => _constraints;
   bool debugAncestorsAlreadyMarkedNeedsLayout() {
     if (_relayoutSubtreeRoot == null)
       return true; // we haven't yet done layout even once, so there's nothing for us to do
-    RenderNode node = this;
+    RenderObject node = this;
     while (node != _relayoutSubtreeRoot) {
       assert(node._relayoutSubtreeRoot == _relayoutSubtreeRoot);
       assert(node.parent != null);
-      node = node.parent as RenderNode;
+      node = node.parent as RenderObject;
       if (!node._needsLayout)
         return false;
     }
     assert(node._relayoutSubtreeRoot == node);
     return true;
   }
   void markNeedsLayout() {
     assert(!_debugDoingLayout);
     assert(!debugDoingPaint);
     if (_needsLayout) {
       assert(debugAncestorsAlreadyMarkedNeedsLayout());
       return;
     }
     _needsLayout = true;
     assert(_relayoutSubtreeRoot != null);
     if (_relayoutSubtreeRoot != this) {
-      assert(parent is RenderNode);
+      assert(parent is RenderObject);
       parent.markNeedsLayout();
     } else {
       _nodesNeedingLayout.add(this);
       scheduler.ensureVisualUpdate();
     }
   }
   static void flushLayout() {
     _debugDoingLayout = true;
-    List<RenderNode> dirtyNodes = _nodesNeedingLayout;
-    _nodesNeedingLayout = new List<RenderNode>();
+    List<RenderObject> dirtyNodes = _nodesNeedingLayout;
+    _nodesNeedingLayout = new List<RenderObject>();
     dirtyNodes..sort((a, b) => a.depth - b.depth)..forEach((node) {
       if (node._needsLayout && node.attached)
         node._doLayout();
     });
     _debugDoingLayout = false;
   }
   void _doLayout() {
     try {
       assert(_relayoutSubtreeRoot == this);
       performLayout();
     } catch (e, stack) {
       print('Exception raised during layout of ${this}: ${e}');
       print(stack);
       return;
     }
     _needsLayout = false;
   }
   void layout(dynamic constraints, { bool parentUsesSize: false }) {
-    RenderNode relayoutSubtreeRoot;
-    if (!parentUsesSize || sizedByParent || parent is! RenderNode)
+    RenderObject relayoutSubtreeRoot;
+    if (!parentUsesSize || sizedByParent || parent is! RenderObject)
       relayoutSubtreeRoot = this;
     else
       relayoutSubtreeRoot = parent._relayoutSubtreeRoot;
     if (!needsLayout && constraints == _constraints && relayoutSubtreeRoot == _relayoutSubtreeRoot)
       return;
     _constraints = constraints;
     _relayoutSubtreeRoot = relayoutSubtreeRoot;
     if (sizedByParent)
       performResize();
     performLayout();
@@ skipping 32 matching lines @@
   }) { }
 
 
   // PAINTING
 
   static bool debugDoingPaint = false;
   void markNeedsPaint() {
     assert(!debugDoingPaint);
     scheduler.ensureVisualUpdate();
   }
-  void paint(RenderNodeDisplayList canvas) { }
+  void paint(RenderObjectDisplayList canvas) { }
 
 
   // EVENTS
 
   void handleEvent(sky.Event event) {
     // override this if you have a client, to hand it to the client
     // override this if you want to do anything with the event
   }
 
 
   // HIT TESTING
 
-  // RenderNode subclasses are expected to have a method like the
+  // RenderObject subclasses are expected to have a method like the
   // following (with the signature being whatever passes for coordinates
   // for this particular class):
   // bool hitTest(HitTestResult result, { sky.Point position }) {
   //   // If (x,y) is not inside this node, then return false. (You
   //   // can assume that the given coordinate is inside your
   //   // dimensions. You only need to check this if you're an
   //   // irregular shape, e.g. if you have a hole.)
   //   // Otherwise:
   //   // For each child that intersects x,y, in z-order starting from the top,
   //   // call hitTest() for that child, passing it /result/, and the coordinates
   //   // converted to the child's coordinate origin, and stop at the first child
   //   // that returns true.
   //   // Then, add yourself to /result/, and return true.
   // }
   // You must not add yourself to /result/ if you return false.
 
 }
 
 class HitTestResult {
-  final List<RenderNode> path = new List<RenderNode>();
+  final List<RenderObject> path = new List<RenderObject>();
 
-  RenderNode get result => path.first;
+  RenderObject get result => path.first;
 
-  void add(RenderNode node) {
+  void add(RenderObject node) {
     path.add(node);
   }
 }
 
 
 // GENERIC MIXIN FOR RENDER NODES WITH ONE CHILD
 
-abstract class RenderNodeWithChildMixin<ChildType extends RenderNode> {
+abstract class RenderObjectWithChildMixin<ChildType extends RenderObject> {
   ChildType _child;
   ChildType get child => _child;
   void set child (ChildType value) {
     if (_child != null)
       dropChild(_child);
     _child = value;
     if (_child != null)
       adoptChild(_child);
     markNeedsLayout();
   }
   void attachChildren() {
     if (_child != null)
       _child.attach();
   }
   void detachChildren() {
     if (_child != null)
       _child.detach();
   }
 }
 
 
 // GENERIC MIXIN FOR RENDER NODES WITH A LIST OF CHILDREN
 
-abstract class ContainerParentDataMixin<ChildType extends RenderNode> {
+abstract class ContainerParentDataMixin<ChildType extends RenderObject> {
   ChildType previousSibling;
   ChildType nextSibling;
   void detachSiblings() {
     if (previousSibling != null) {
       assert(previousSibling.parentData is ContainerParentDataMixin<ChildType>);
       assert(previousSibling != this);
       assert(previousSibling.parentData.nextSibling == this);
       previousSibling.parentData.nextSibling = nextSibling;
     }
     if (nextSibling != null) {
       assert(nextSibling.parentData is ContainerParentDataMixin<ChildType>);
       assert(nextSibling != this);
       assert(nextSibling.parentData.previousSibling == this);
       nextSibling.parentData.previousSibling = previousSibling;
     }
     previousSibling = null;
     nextSibling = null;
   }
 }
 
-abstract class ContainerRenderNodeMixin<ChildType extends RenderNode, ParentDataType extends ContainerParentDataMixin<ChildType>> implements RenderNode {
+abstract class ContainerRenderObjectMixin<ChildType extends RenderObject, ParentDataType extends ContainerParentDataMixin<ChildType>> implements RenderObject {
   // abstract class that has only InlineNode children
 
   bool _debugUltimatePreviousSiblingOf(ChildType child, { ChildType equals }) {
     assert(child.parentData is ParentDataType);
     while (child.parentData.previousSibling != null) {
       assert(child.parentData.previousSibling != child);
       child = child.parentData.previousSibling;
       assert(child.parentData is ParentDataType);
     }
     return child == equals;
@@ skipping 105 matching lines @@
     }
   }
 
   ChildType get firstChild => _firstChild;
   ChildType get lastChild => _lastChild;
   ChildType childAfter(ChildType child) {
     assert(child.parentData is ParentDataType);
     return child.parentData.nextSibling;
   }
 }