Explore the possibility of implementing the CSS Region interface.

Source/core/css/CSSRegion.h

Index: Source/core/css/CSSRegion.h
diff --git a/Source/core/css/CSSFilterRule.h b/Source/core/css/CSSRegion.h
similarity index 51%
copy from Source/core/css/CSSFilterRule.h
copy to Source/core/css/CSSRegion.h
index 9e605873553aef3821cd10a78e96aa14b9ab9a55..ba82e44bea9d24862fcfa9039991afe54ba300d1 100644
--- a/Source/core/css/CSSFilterRule.h
+++ b/Source/core/css/CSSRegion.h
@@ -27,37 +27,57 @@
  * SUCH DAMAGE.
  */
 
-#ifndef CSSFilterRule_h
-#define CSSFilterRule_h
+#ifndef CSSRegion_h
+#define CSSRegion_h
 
-#include "core/css/CSSRule.h"
+#include "core/dom/Element.h"
+#include "core/dom/PseudoElement.h"
+#include "core/dom/Range.h"
+
+#include "wtf/RefCounted.h"
+#include "wtf/RefPtr.h"
 
 namespace WebCore {
 
-class CSSStyleDeclaration;
-class StyleRuleFilter;
-class StyleRuleCSSStyleDeclaration;
+class Range;
 
-class CSSFilterRule : public CSSRule {
+class CSSRegion {
 public:
-    static PassRefPtr<CSSFilterRule> create(StyleRuleFilter* rule, CSSStyleSheet* sheet) { return adoptRef(new CSSFilterRule(rule, sheet)); }
+    static const AtomicString& webkitRegionOverset(const Element* element)
+    {
+        return element->webkitRegionOverset();
+    }

[abarth-chromium, 2013/11/14 07:55:15]

We shouldn't use the "webkit" prefix in C++.  You can use the ImplementedAs IDL
attribute to map a prefixed names in the IDL to an unprefixed C++ name.

[abucur, 2013/11/15 07:15:14]

Ok, I'll create a code review that will remove the prefixes from C++.

+
+    static Vector<RefPtr<Range> > webkitGetRegionFlowRanges(const Element* element)
+    {
+        return element->webkitGetRegionFlowRanges();
+    }
 
-    virtual ~CSSFilterRule();
+    static const AtomicString& webkitRegionOverset(const PseudoElement* pseudoElement)
+    {
+        PseudoId pseudoId = pseudoElement->pseudoId();
+        if (pseudoElement->parentNode() && pseudoElement->parentElement()->pseudoElement(pseudoId) == pseudoElement)
+            return pseudoElement->webkitRegionOverset();
 
-    virtual CSSRule::Type type() const OVERRIDE { return WEBKIT_FILTER_RULE; }
-    virtual String cssText() const OVERRIDE;
-    virtual void reattach(StyleRuleBase*) OVERRIDE;
+        return nullAtom;
+    }
 
-    CSSStyleDeclaration* style() const;
+    static Vector<RefPtr<Range> > webkitGetRegionFlowRanges(const PseudoElement* pseudoElement)
+    {
+        PseudoId pseudoId = pseudoElement->pseudoId();
+        if (pseudoElement->parentNode() && pseudoElement->parentElement()->pseudoElement(pseudoId) == pseudoElement)
+            return pseudoElement->webkitGetRegionFlowRanges();
+
+        return Vector<RefPtr<Range> >();
+    }
 
 private:
-    CSSFilterRule(StyleRuleFilter*, CSSStyleSheet* parent);
+    CSSRegion()
+    {
 
-    RefPtr<StyleRuleFilter> m_filterRule;
-    mutable RefPtr<StyleRuleCSSStyleDeclaration> m_propertiesCSSOMWrapper;
+    }
 };
 
-}
-
+} // namespace WebCore
 
-#endif // CSSFilterRule_h
+#endif // CSSRegion_h