1 files changed, 46 insertions, 0 deletions
diff --git a/Source/WebCore/css/CSSRule.cpp b/Source/WebCore/css/CSSRule.cpp
index 13ad50ad3..09643ea9e 100644
--- a/Source/WebCore/css/CSSRule.cpp
+++ b/Source/WebCore/css/CSSRule.cpp
@@ -28,11 +28,13 @@
 #include "CSSMediaRule.h"
 #include "CSSPageRule.h"
 #include "CSSStyleRule.h"
+#include "CSSStyleSheet.h"
 #include "CSSUnknownRule.h"
 #include "WebKitCSSKeyframeRule.h"
 #include "WebKitCSSKeyframesRule.h"
 #include "WebKitCSSRegionRule.h"
 #include "NotImplemented.h"
+#include "StyleRule.h"
 
 namespace WebCore {
 
@@ -113,4 +115,48 @@ void CSSRule::destroy()
     ASSERT_NOT_REACHED();
 }
 
+void CSSRule::reattach(StyleRuleBase* rule)
+{
+    switch (type()) {
+    case UNKNOWN_RULE:
+        return;
+    case STYLE_RULE:
+        static_cast<CSSStyleRule*>(this)->reattach(static_cast<StyleRule*>(rule));
+        return;
+    case PAGE_RULE:
+        static_cast<CSSPageRule*>(this)->reattach(static_cast<StyleRulePage*>(rule));
+        return;
+    case CHARSET_RULE:
+        ASSERT(!rule);
+        return;
+    case IMPORT_RULE:
+        // FIXME: Implement when enabling caching for stylesheets with import rules.
+        ASSERT_NOT_REACHED();
+        return;
+    case MEDIA_RULE:
+        static_cast<CSSMediaRule*>(this)->reattach(static_cast<StyleRuleMedia*>(rule));
+        return;
+    case FONT_FACE_RULE:
+        static_cast<CSSFontFaceRule*>(this)->reattach(static_cast<StyleRuleFontFace*>(rule));
+        return;
+    case WEBKIT_KEYFRAMES_RULE:
+        static_cast<WebKitCSSKeyframesRule*>(this)->reattach(static_cast<StyleRuleKeyframes*>(rule));
+        return;
+    case WEBKIT_KEYFRAME_RULE:
+        // No need to reattach, the underlying data is shareable on mutation.
+        ASSERT_NOT_REACHED();
+        return;
+    case WEBKIT_REGION_RULE:
+        static_cast<WebKitCSSRegionRule*>(this)->reattach(static_cast<StyleRuleRegion*>(rule));
+        return;
+    }
+    ASSERT_NOT_REACHED();
+}
+
+const CSSParserContext& CSSRule::parserContext() const
+{
+    CSSStyleSheet* styleSheet = parentStyleSheet();
+    return styleSheet ? styleSheet->internal()->parserContext() : strictCSSParserContext();
+}
+
 } // namespace WebCore