[SVG2] Add tabindex handling in svg.

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 273 matching lines @@
     // For exposing to DOM only.
     NamedNodeMap* attributes() const;
 
     enum AttributeModificationReason {
         ModifiedDirectly,
         ModifiedByCloning
     };
 
     // This method is called whenever an attribute is added, changed or removed.
     virtual void attributeChanged(const QualifiedName&, const AtomicString&, AttributeModificationReason = ModifiedDirectly);
-    virtual void parseAttribute(const QualifiedName&, const AtomicString&) { }
+    virtual void parseAttribute(const QualifiedName&, const AtomicString&);
 
     virtual bool hasLegalLinkAttribute(const QualifiedName&) const;
     virtual const QualifiedName& subResourceAttributeName() const;
 
     // Only called by the parser immediately after element construction.
     void parserSetAttributes(const Vector<Attribute>&);
 
     // Remove attributes that might introduce scripting from the vector leaving the element unchanged.
     void stripScriptingAttributes(Vector<Attribute>&) const;
 
@@ skipping 62 matching lines @@
     virtual const AtomicString imageSourceURL() const;
     virtual Image* imageContents() { return 0; }
 
     virtual void focus(bool restorePreviousSelection = true, FocusType = FocusTypeNone);
     virtual void updateFocusAppearance(bool restorePreviousSelection);
     virtual void blur();
     // Whether this element can receive focus at all. Most elements are not
     // focusable but some elements, such as form controls and links, are. Unlike
     // rendererIsFocusable(), this method may be called when layout is not up to
     // date, so it must not use the renderer to determine focusability.
-    virtual bool supportsFocus() const { return hasElementFlag(TabIndexWasSetExplicitly); }
+    virtual bool supportsFocus() const;
     // Whether the node can actually be focused.
     bool isFocusable() const;
     virtual bool isKeyboardFocusable() const;
     virtual bool isMouseFocusable() const;
     virtual void dispatchFocusEvent(Element* oldFocusedElement, FocusType);
     virtual void dispatchBlurEvent(Element* newFocusedElement);
     void dispatchFocusInEvent(const AtomicString& eventType, Element* oldFocusedElement);
     void dispatchFocusOutEvent(const AtomicString& eventType, Element* newFocusedElement);
 
     String innerText();
@@ skipping 115 matching lines @@
     InputMethodContext& inputMethodContext();
     bool hasInputMethodContext() const;
 
     void setPrefix(const AtomicString&, ExceptionState&);
 
     void synchronizeAttribute(const AtomicString& localName) const;
 
     MutableStylePropertySet& ensureMutableInlineStyle();
     void clearMutableInlineStyleIfEmpty();
 
+    void setTabIndex(int);
+    virtual short tabIndex() const OVERRIDE;
+
 protected:
     Element(const QualifiedName& tagName, Document* document, ConstructionType type)
         : ContainerNode(document, type)
         , m_tagName(tagName)
     {
         ScriptWrappable::init(this);
     }
 
     void addPropertyToPresentationAttributeStyle(MutableStylePropertySet*, CSSPropertyID, CSSValueID identifier);
     void addPropertyToPresentationAttributeStyle(MutableStylePropertySet*, CSSPropertyID, double value, CSSPrimitiveValue::UnitTypes);
     void addPropertyToPresentationAttributeStyle(MutableStylePropertySet*, CSSPropertyID, const String& value);
 
     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     virtual void removedFrom(ContainerNode*) OVERRIDE;
     virtual void childrenChanged(bool changedByParser = false, Node* beforeChange = 0, Node* afterChange = 0, int childCountDelta = 0) OVERRIDE;
 
     virtual void willRecalcStyle(StyleRecalcChange);
     virtual void didRecalcStyle(StyleRecalcChange);
     virtual PassRefPtr<RenderStyle> customStyleForRenderer();
 
     virtual bool shouldRegisterAsNamedItem() const { return false; }
     virtual bool shouldRegisterAsExtraNamedItem() const { return false; }
 
+    virtual bool supportsSpatialNavigationFocus() const;
+
     void clearTabIndexExplicitlyIfNeeded();
     void setTabIndexExplicitly(short);
-    virtual short tabIndex() const OVERRIDE;
     // Subclasses may override this method to affect focusability. Unlike
     // supportsFocus, this method must be called on an up-to-date layout, so it
     // may use the renderer to reason about focusability. This method cannot be
     // moved to RenderObject because some focusable nodes don't have renderers,
     // e.g., HTMLOptionElement.
     virtual bool rendererIsFocusable() const;
     PassRefPtr<HTMLCollection> ensureCachedHTMLCollection(CollectionType);
     HTMLCollection* cachedHTMLCollection(CollectionType);
 
     // classAttributeChanged() exists to share code between
@@ skipping 326 matching lines @@
     template <> inline bool isElementOfType<const thisType>(const Element& element) { return element.predicate; } \
     DEFINE_NODE_TYPE_CASTS(thisType, predicate)
 
 #define DEFINE_ELEMENT_TYPE_CASTS_WITH_FUNCTION(thisType) \
     template <> inline bool isElementOfType<const thisType>(const Element& element) { return is##thisType(element); } \
     DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(thisType)
 
 } // namespace
 
 #endif