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      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/rendering/style/RenderStyle.h"
     35 
     36 namespace blink {
     37 
     38 struct SameSizeAsElementRareData : NodeRareData {
     39     short indices[2];
     40     LayoutSize sizeForResizing;
     41     IntSize scrollOffset;
     42     void* pointers[13];
     43 };
     44 
     45 CSSStyleDeclaration& ElementRareData::ensureInlineCSSStyleDeclaration(Element* ownerElement)
     46 {
     47     if (!m_cssomWrapper)
     48         m_cssomWrapper = adoptPtrWillBeNoop(new InlineCSSStyleDeclaration(ownerElement));
     49     return *m_cssomWrapper;
     50 }
     51 
     52 WillBeHeapVector<RefPtrWillBeMember<Attr> >& ElementRareData::ensureAttrNodeList()
     53 {
     54     if (!m_attrNodeList)
     55         m_attrNodeList = adoptPtrWillBeNoop(new WillBeHeapVector<RefPtrWillBeMember<Attr> >());
     56     return *m_attrNodeList;
     57 }
     58 
     59 void ElementRareData::traceAfterDispatch(Visitor* visitor)
     60 {
     61     visitor->trace(m_dataset);
     62     visitor->trace(m_classList);
     63     visitor->trace(m_shadow);
     64     visitor->trace(m_attributeMap);
     65 #if ENABLE(OILPAN)
     66     visitor->trace(m_attrNodeList);
     67 #endif
     68     visitor->trace(m_inputMethodContext);
     69     visitor->trace(m_activeAnimations);
     70     visitor->trace(m_cssomWrapper);
     71     visitor->trace(m_generatedBefore);
     72     visitor->trace(m_generatedAfter);
     73     visitor->trace(m_backdrop);
     74     NodeRareData::traceAfterDispatch(visitor);
     75 }
     76 
     77 COMPILE_ASSERT(sizeof(ElementRareData) == sizeof(SameSizeAsElementRareData), ElementRareDataShouldStaySmall);
     78 
     79 } // namespace blink
     80