compositor-worker: plumb element id and mutable properties

third_party/WebKit/Source/core/dom/ElementRareData.h

 /*
  * Copyright (C) 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Smith <catfish.man@gmail.com>
  *
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef ElementRareData_h
 #define ElementRareData_h
 
 #include "core/animation/ElementAnimations.h"
 #include "core/dom/Attr.h"
+#include "core/dom/CompositorProxiedPropertySet.h"
 #include "core/dom/DatasetDOMStringMap.h"
 #include "core/dom/NamedNodeMap.h"
 #include "core/dom/NodeRareData.h"
 #include "core/dom/PseudoElement.h"
 #include "core/dom/custom/CustomElementDefinition.h"
 #include "core/dom/shadow/ElementShadow.h"
 #include "core/html/ClassList.h"
 #include "core/style/StyleInheritedData.h"
 #include "platform/heap/Handle.h"
 #include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class HTMLElement;
+class CompositorProxiedPropertySet;
 
 class ElementRareData : public NodeRareData {
 public:
     static ElementRareData* create(LayoutObject* layoutObject)
     {
         return new ElementRareData(layoutObject);
     }
 
     ~ElementRareData();
 
@@ skipping 52 matching lines @@
 
     ElementAnimations* elementAnimations() { return m_elementAnimations.get(); }
     void setElementAnimations(ElementAnimations* elementAnimations)
     {
         m_elementAnimations = elementAnimations;
     }
 
     bool hasPseudoElements() const;
     void clearPseudoElements();
 
-    uint32_t incrementProxyCount() { return ++m_proxyCount; }
-    uint32_t decrementProxyCount()
-    {
-        ASSERT(m_proxyCount);
-        return --m_proxyCount;
-    }
-    uint32_t proxyCount() const { return m_proxyCount; }
+    void incrementCompositorProxiedProperties(uint32_t properties);
+    void decrementCompositorProxiedProperties(uint32_t properties);
+    CompositorProxiedPropertySet* proxiedPropertyCounts() const { return m_proxiedProperties.get(); }
 
     void setCustomElementDefinition(PassRefPtrWillBeRawPtr<CustomElementDefinition> definition) { m_customElementDefinition = definition; }
     CustomElementDefinition* customElementDefinition() const { return m_customElementDefinition.get(); }
 
     AttrNodeList& ensureAttrNodeList();
     AttrNodeList* attrNodeList() { return m_attrNodeList.get(); }
     void removeAttrNodeList() { m_attrNodeList.clear(); }
 
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
+    CompositorProxiedPropertySet& ensureCompositorProxiedPropertySet();
+    void clearCompositorProxiedPropertySet() { m_proxiedProperties = nullptr; }
+
     short m_tabindex;
-    // As m_proxyCount usually doesn't exceed 10bits (1024), if you want to add some booleans you
-    // can steal some bits from m_proxyCount by using bitfields to prevent ElementRareData bloat.
-    unsigned short m_proxyCount;
 
     LayoutSize m_minimumSizeForResizing;
     IntSize m_savedLayerScrollOffset;
 
     OwnPtrWillBeMember<DatasetDOMStringMap> m_dataset;
     OwnPtrWillBeMember<ClassList> m_classList;
     OwnPtrWillBeMember<ElementShadow> m_shadow;
     OwnPtrWillBeMember<NamedNodeMap> m_attributeMap;
     OwnPtrWillBeMember<AttrNodeList> m_attrNodeList;
     PersistentWillBeMember<ElementAnimations> m_elementAnimations;
     OwnPtrWillBeMember<InlineCSSStyleDeclaration> m_cssomWrapper;
+    OwnPtrWillBeMember<CompositorProxiedPropertySet> m_proxiedProperties;
 
     RefPtr<ComputedStyle> m_computedStyle;
     RefPtrWillBeMember<CustomElementDefinition> m_customElementDefinition;
 
     RefPtrWillBeMember<PseudoElement> m_generatedBefore;
     RefPtrWillBeMember<PseudoElement> m_generatedAfter;
     RefPtrWillBeMember<PseudoElement> m_generatedFirstLetter;
     RefPtrWillBeMember<PseudoElement> m_backdrop;
 
     explicit ElementRareData(LayoutObject*);
 };
 
 inline LayoutSize defaultMinimumSizeForResizing()
 {
     return LayoutSize(LayoutUnit::max(), LayoutUnit::max());
 }
 
 inline ElementRareData::ElementRareData(LayoutObject* layoutObject)
     : NodeRareData(layoutObject)
     , m_tabindex(0)
-    , m_proxyCount(0)
     , m_minimumSizeForResizing(defaultMinimumSizeForResizing())
 {
     m_isElementRareData = true;
 }
 
 inline ElementRareData::~ElementRareData()
 {
 #if !ENABLE(OILPAN)
     if (m_elementAnimations)
         m_elementAnimations->dispose();
@@ skipping 55 matching lines @@
         return m_generatedAfter.get();
     case BACKDROP:
         return m_backdrop.get();
     case FIRST_LETTER:
         return m_generatedFirstLetter.get();
     default:
         return 0;
     }
 }
 
+inline void ElementRareData::incrementCompositorProxiedProperties(uint32_t properties)
+{
+    ensureCompositorProxiedPropertySet().increment(properties);
+}
+
+inline void ElementRareData::decrementCompositorProxiedProperties(uint32_t properties)
+{
+    m_proxiedProperties->decrement(properties);
+    if (m_proxiedProperties->isEmpty())
+        clearCompositorProxiedPropertySet();
+}
+
+inline CompositorProxiedPropertySet& ElementRareData::ensureCompositorProxiedPropertySet()
+{
+    if (!m_proxiedProperties)
+        m_proxiedProperties = CompositorProxiedPropertySet::create();
+    return *m_proxiedProperties;
+}
+
 } // namespace
 
 #endif // ElementRareData_h