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      1 /*
      2  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  */
     19 
     20 #ifndef SVGElementRareData_h
     21 #define SVGElementRareData_h
     22 
     23 #include <wtf/HashSet.h>
     24 #include <wtf/Noncopyable.h>
     25 #include <wtf/StdLibExtras.h>
     26 
     27 namespace WebCore {
     28 
     29 class CSSCursorImageValue;
     30 class SVGCursorElement;
     31 class SVGElement;
     32 class SVGElementInstance;
     33 
     34 class SVGElementRareData {
     35     WTF_MAKE_NONCOPYABLE(SVGElementRareData); WTF_MAKE_FAST_ALLOCATED;
     36 public:
     37     SVGElementRareData()
     38         : m_cursorElement(0)
     39         , m_cursorImageValue(0)
     40         , m_instancesUpdatesBlocked(false)
     41     {
     42     }
     43 
     44     typedef HashMap<const SVGElement*, SVGElementRareData*> SVGElementRareDataMap;
     45 
     46     static SVGElementRareDataMap& rareDataMap()
     47     {
     48         DEFINE_STATIC_LOCAL(SVGElementRareDataMap, rareDataMap, ());
     49         return rareDataMap;
     50     }
     51 
     52     static SVGElementRareData* rareDataFromMap(const SVGElement* element)
     53     {
     54         return rareDataMap().get(element);
     55     }
     56 
     57     HashSet<SVGElementInstance*>& elementInstances() { return m_elementInstances; }
     58     const HashSet<SVGElementInstance*>& elementInstances() const { return m_elementInstances; }
     59 
     60     bool instanceUpdatesBlocked() const { return m_instancesUpdatesBlocked; }
     61     void setInstanceUpdatesBlocked(bool value) { m_instancesUpdatesBlocked = value; }
     62 
     63     SVGCursorElement* cursorElement() const { return m_cursorElement; }
     64     void setCursorElement(SVGCursorElement* cursorElement) { m_cursorElement = cursorElement; }
     65 
     66     CSSCursorImageValue* cursorImageValue() const { return m_cursorImageValue; }
     67     void setCursorImageValue(CSSCursorImageValue* cursorImageValue) { m_cursorImageValue = cursorImageValue; }
     68 
     69 private:
     70     HashSet<SVGElementInstance*> m_elementInstances;
     71     SVGCursorElement* m_cursorElement;
     72     CSSCursorImageValue* m_cursorImageValue;
     73     bool m_instancesUpdatesBlocked : 1;
     74 };
     75 
     76 }
     77 
     78 #endif
     79