Implement elementsFromPoint

Source/core/dom/TreeScope.h

 /*
  * Copyright (C) 2011 Google Inc. All Rights Reserved.
  * Copyright (C) 2012 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 22 matching lines @@
 
 namespace blink {
 
 class ContainerNode;
 class DOMSelection;
 class Document;
 class Element;
 class HTMLLabelElement;
 class HTMLMapElement;
 class HitTestResult;
+class HitTestRequest;
 class IdTargetObserverRegistry;
 class ScopedStyleResolver;
 class Node;
 
 // A class which inherits both Node and TreeScope must call clearRareData() in its destructor
 // so that the Node destructor no longer does problematic NodeList cache manipulation in
 // the destructor.
 class TreeScope : public WillBeGarbageCollectedMixin {
 public:
     TreeScope* parentTreeScope() const { return m_parentTreeScope; }
@@ skipping 15 matching lines @@
         return *m_document;
     }
 
     Node* ancestorInThisScope(Node*) const;
 
     void addImageMap(HTMLMapElement*);
     void removeImageMap(HTMLMapElement*);
     HTMLMapElement* getImageMap(const String& url) const;
 
     Element* elementFromPoint(int x, int y) const;
+    Vector<Element*> elementsFromPoint(int x, int y) const;
 
     // For accessibility.
     bool shouldCacheLabelsByForAttribute() const { return m_labelsByForAttribute; }
     void addLabel(const AtomicString& forAttributeValue, HTMLLabelElement*);
     void removeLabel(const AtomicString& forAttributeValue, HTMLLabelElement*);
     HTMLLabelElement* labelElementForId(const AtomicString& forAttributeValue);
 
     DOMSelection* getSelection() const;
 
     // Find first anchor with the given name.
@@ skipping 111 matching lines @@
     return m_elementsById && m_elementsById->contains(id);
 }
 
 inline bool TreeScope::containsMultipleElementsWithId(const AtomicString& id) const
 {
     return m_elementsById && m_elementsById->containsMultiple(id);
 }
 
 DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES(TreeScope)
 
-HitTestResult hitTestInDocument(const Document*, int x, int y);
+HitTestResult hitTestInDocument(const Document*, int x, int y, HitTestRequest);

[Rick Byers, 2015/02/04 10:34:03]

I think most places pass HitTestRequest by const ref instead of making a copy
(although with the current implementation it won't make any difference).

[pdr., 2015/02/17 04:10:13]

Done

 
 } // namespace blink
 
 #endif // TreeScope_h