Add forEach() to CSSVariablesMap

Source/core/css/CSSComputedStyleDeclaration.h

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 31 matching lines @@
 class RenderObject;
 class RenderStyle;
 class SVGPaint;
 class ShadowData;
 class StylePropertySet;
 class StylePropertyShorthand;
 
 enum EUpdateLayout { DoNotUpdateLayout = false, UpdateLayout = true };
 
 class CSSComputedStyleDeclaration : public CSSStyleDeclaration {
+private:
+    class ComputedCSSVariablesIterator : public CSSVariablesIterator {
+    public:
+        virtual ~ComputedCSSVariablesIterator() { }
+        static PassRefPtr<ComputedCSSVariablesIterator> create(const HashMap<AtomicString, String>* variableMap) { return adoptRef(new ComputedCSSVariablesIterator(variableMap)); }
+    private:
+        explicit ComputedCSSVariablesIterator(const HashMap<AtomicString, String>* variableMap);
+        virtual void advance() OVERRIDE;
+        virtual bool atEnd() const OVERRIDE { return m_it == m_end; }
+        virtual AtomicString name() const OVERRIDE;
+        virtual String value() const OVERRIDE;
+        bool m_active;
+        typedef HashMap<AtomicString, String>::const_iterator VariablesMapIterator;
+        VariablesMapIterator m_it;
+        VariablesMapIterator m_end;
+    };
+
 public:
     static PassRefPtr<CSSComputedStyleDeclaration> create(PassRefPtr<Node> node, bool allowVisitedStyle = false, const String& pseudoElementName = String())
     {
         return adoptRef(new CSSComputedStyleDeclaration(node, allowVisitedStyle, pseudoElementName));
     }
     virtual ~CSSComputedStyleDeclaration();
 
     virtual void ref() OVERRIDE;
     virtual void deref() OVERRIDE;
 
@@ skipping 34 matching lines @@
     virtual String removeProperty(const String& propertyName, ExceptionState&);
     virtual String cssText() const;
     virtual void setCssText(const String&, ExceptionState&);
     virtual PassRefPtr<CSSValue> getPropertyCSSValueInternal(CSSPropertyID);
     virtual String getPropertyValueInternal(CSSPropertyID);
     virtual void setPropertyInternal(CSSPropertyID, const String& value, bool important, ExceptionState&);
 
     const HashMap<AtomicString, String>* variableMap() const;
     virtual unsigned variableCount() const OVERRIDE;
     virtual String variableValue(const AtomicString& name) const OVERRIDE;
-    virtual void setVariableValue(const AtomicString& name, const String& value, ExceptionState&) OVERRIDE;
+    virtual bool setVariableValue(const AtomicString& name, const String& value, ExceptionState&) OVERRIDE;
     virtual bool removeVariable(const AtomicString& name) OVERRIDE;
-    virtual void clearVariables(ExceptionState&) OVERRIDE;
+    virtual bool clearVariables(ExceptionState&) OVERRIDE;
+    virtual PassRefPtr<CSSVariablesIterator> variablesIterator() const OVERRIDE { return ComputedCSSVariablesIterator::create(variableMap()); }
 
     virtual bool cssPropertyMatches(CSSPropertyID, const CSSValue*) const OVERRIDE;
 
     PassRefPtr<CSSValue> valueForShadow(const ShadowData*, CSSPropertyID, const RenderStyle*) const;
     PassRefPtr<CSSPrimitiveValue> currentColorOrValidColor(RenderStyle*, const Color&) const;
     PassRefPtr<SVGPaint> adjustSVGPaintForCurrentColor(PassRefPtr<SVGPaint>, RenderStyle*) const;
 
     PassRefPtr<CSSValue> valueForFilter(const RenderObject*, const RenderStyle*) const;
 
     PassRefPtr<CSSValueList> valuesForShorthandProperty(const StylePropertyShorthand&) const;
     PassRefPtr<CSSValueList> valuesForSidesShorthand(const StylePropertyShorthand&) const;
     PassRefPtr<CSSValueList> valuesForBackgroundShorthand() const;
     PassRefPtr<CSSValueList> valuesForGridShorthand(const StylePropertyShorthand&) const;
 
     RefPtr<Node> m_node;
     PseudoId m_pseudoElementSpecifier;
     bool m_allowVisitedStyle;
     unsigned m_refCount;
 };
 
 } // namespace WebCore
 
 #endif // CSSComputedStyleDeclaration_h