Add a WebDocument::watchCssSelectors(selectors)

Source/core/css/resolver/StyleResolverState.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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
  * 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 20 matching lines @@
 #include "core/platform/graphics/Color.h"
 #include "core/rendering/style/CachedUAStyle.h"
 #include "core/rendering/style/RenderStyle.h"
 #include "core/rendering/style/StyleInheritedData.h"
 #include "wtf/HashMap.h"
 
 namespace WebCore {
 
 class FontDescription;
 class RenderRegion;
+class StyleRule;
 
 // ElementResolveContext is immutable and serves as an input to the style resolve process.
 class ElementResolveContext {
 public:
     ElementResolveContext()
         : m_element(0)
         , m_parentNode(0)
         , m_rootElementStyle(0)
         , m_elementLinkState(NotInsideLink)
         , m_distributedToInsertionPoint(false)
@@ skipping 43 matching lines @@
 class StyleResolverState {
 WTF_MAKE_NONCOPYABLE(StyleResolverState);
 public:
     StyleResolverState()
     : m_regionForStyling(0)
     , m_applyPropertyToRegularStyle(true)
     , m_applyPropertyToVisitedLinkStyle(false)
     , m_lineHeightValue(0)
     , m_fontDirty(false)
     , m_styleMap(*this, m_elementStyleResources)
+#if ENABLE(CSS_CALLBACKS)
+    , m_rule(0)
+#endif
     { }
 
     // These are all just pass-through methods to ElementResolveContext.
     Document* document() const { return m_elementContext.document(); }
     Element* element() const { return m_elementContext.element(); }
     const ContainerNode* parentNode() const { return m_elementContext.parentNode(); }
     RenderStyle* rootElementStyle() const { return m_elementContext.rootElementStyle(); }
     EInsideLink elementLinkState() const { return m_elementContext.elementLinkState(); }
     bool distributedToInsertionPoint() const { return m_elementContext.distributedToInsertionPoint(); }
 
     const ElementResolveContext elementContext() const { return m_elementContext; }
 
     void setStyle(PassRefPtr<RenderStyle> style) { m_style = style; }
     RenderStyle* style() const { return m_style.get(); }
     PassRefPtr<RenderStyle> takeStyle() { return m_style.release(); }
 
     void setParentStyle(PassRefPtr<RenderStyle> parentStyle) { m_parentStyle = parentStyle; }
     RenderStyle* parentStyle() const { return m_parentStyle.get(); }
 
     const RenderRegion* regionForStyling() const { return m_regionForStyling; }
 
+#if ENABLE(CSS_CALLBACKS)
+    void setRule(StyleRule* rule) { m_rule = rule; }
+    const StyleRule* rule() const { return m_rule; }

[esprehn, 2013/07/13 01:43:01]

currentRule() ?

[Jeffrey Yasskin, 2013/08/13 00:29:29]

Done.

+#endif
+
     // FIXME: These are effectively side-channel "out parameters" for the various
     // map functions. When we map from CSS to style objects we use this state object
     // to track various meta-data about that mapping (e.g. if it's cache-able).
     // We need to move this data off of StyleResolverState and closer to the
     // objects it applies to. Possibly separating (immutable) inputs from (mutable) outputs.
     void setApplyPropertyToRegularStyle(bool isApply) { m_applyPropertyToRegularStyle = isApply; }
     void setApplyPropertyToVisitedLinkStyle(bool isApply) { m_applyPropertyToVisitedLinkStyle = isApply; }
     bool applyPropertyToRegularStyle() const { return m_applyPropertyToRegularStyle; }
     bool applyPropertyToVisitedLinkStyle() const { return m_applyPropertyToVisitedLinkStyle; }
 
@@ skipping 79 matching lines @@
     // is changed, StyleResolver tracks the need to update
     // style->font() with this bool.
     bool m_fontDirty;
 
     CachedUAStyle m_cachedUAStyle;
 
     ElementStyleResources m_elementStyleResources;
     // CSSToStyleMap is a pure-logic class and only contains
     // a back-pointer to this object.
     CSSToStyleMap m_styleMap;
+
+#if ENABLE(CSS_CALLBACKS)
+    StyleRule* m_rule;
+#endif
 };
-
 } // namespace WebCore
 
 #endif // StyleResolverState_h