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

   1 /*
   2  * Copyright (C) 2012 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "core/dom/ElementRareData.h"
  33
  34 #include "core/style/ComputedStyle.h"
  35
  36 namespace blink {
  37
  38 struct SameSizeAsElementRareData : NodeRareData {
  39     short indices[2];
  40     LayoutSize sizeForResizing;
  41     IntSize scrollOffset;
  42     void* pointers[12];
  43     PersistentWillBeMember<void*> member[1];
  44 };
  45
  46 CSSStyleDeclaration& ElementRareData::ensureInlineCSSStyleDeclaration(Element* ownerElement)
  47 {
  48     if (!m_cssomWrapper)
  49         m_cssomWrapper = adoptPtrWillBeNoop(new InlineCSSStyleDeclaration(ownerElement));
  50     return *m_cssomWrapper;
  51 }
  52
  53 AttrNodeList& ElementRareData::ensureAttrNodeList()
  54 {
  55     if (!m_attrNodeList)
  56         m_attrNodeList = adoptPtrWillBeNoop(new AttrNodeList);
  57     return *m_attrNodeList;
  58 }
  59
  60 DEFINE_TRACE_AFTER_DISPATCH(ElementRareData)
  61 {
  62     visitor->trace(m_dataset);
  63     visitor->trace(m_classList);
  64     visitor->trace(m_shadow);
  65     visitor->trace(m_attributeMap);
  66 #if ENABLE(OILPAN)
  67     visitor->trace(m_attrNodeList);
  68 #endif
  69     visitor->trace(m_elementAnimations);
  70     visitor->trace(m_cssomWrapper);
  71     visitor->trace(m_customElementDefinition);
  72     visitor->trace(m_generatedBefore);
  73     visitor->trace(m_generatedAfter);
  74     visitor->trace(m_generatedFirstLetter);
  75     visitor->trace(m_backdrop);
  76     NodeRareData::traceAfterDispatch(visitor);
  77 }
  78
  79 static_assert(sizeof(ElementRareData) == sizeof(SameSizeAsElementRareData), "ElementRareData should stay small");
  80
  81 } // namespace blink