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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 "core/svg/SVGElement.h"
     24 #include "wtf/HashSet.h"
     25 #include "wtf/Noncopyable.h"
     26 #include "wtf/StdLibExtras.h"
     27 
     28 namespace blink {
     29 
     30 class CSSCursorImageValue;
     31 class SVGCursorElement;
     32 
     33 class SVGElementRareData : public NoBaseWillBeGarbageCollectedFinalized<SVGElementRareData> {
     34     WTF_MAKE_NONCOPYABLE(SVGElementRareData); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
     35 public:
     36     SVGElementRareData(SVGElement* owner)
     37 #if ENABLE(OILPAN)
     38         : m_owner(owner)
     39         , m_cursorElement(nullptr)
     40 #else
     41         : m_cursorElement(nullptr)
     42 #endif
     43         , m_cursorImageValue(nullptr)
     44         , m_correspondingElement(nullptr)
     45         , m_instancesUpdatesBlocked(false)
     46         , m_useOverrideComputedStyle(false)
     47         , m_needsOverrideComputedStyleUpdate(false)
     48     {
     49     }
     50 
     51     SVGElementSet& outgoingReferences() { return m_outgoingReferences; }
     52     const SVGElementSet& outgoingReferences() const { return m_outgoingReferences; }
     53     SVGElementSet& incomingReferences() { return m_incomingReferences; }
     54     const SVGElementSet& incomingReferences() const { return m_incomingReferences; }
     55 
     56     WillBeHeapHashSet<RawPtrWillBeWeakMember<SVGElement> >& elementInstances() { return m_elementInstances; }
     57     const WillBeHeapHashSet<RawPtrWillBeWeakMember<SVGElement> >& elementInstances() const { return m_elementInstances; }
     58 
     59     bool instanceUpdatesBlocked() const { return m_instancesUpdatesBlocked; }
     60     void setInstanceUpdatesBlocked(bool value) { m_instancesUpdatesBlocked = value; }
     61 
     62     SVGCursorElement* cursorElement() const { return m_cursorElement; }
     63     void setCursorElement(SVGCursorElement* cursorElement) { m_cursorElement = cursorElement; }
     64 
     65     SVGElement* correspondingElement() { return m_correspondingElement.get(); }
     66     void setCorrespondingElement(SVGElement* correspondingElement) { m_correspondingElement = correspondingElement; }
     67 
     68     CSSCursorImageValue* cursorImageValue() const { return m_cursorImageValue; }
     69     void setCursorImageValue(CSSCursorImageValue* cursorImageValue) { m_cursorImageValue = cursorImageValue; }
     70 
     71     MutableStylePropertySet* animatedSMILStyleProperties() const { return m_animatedSMILStyleProperties.get(); }
     72     MutableStylePropertySet* ensureAnimatedSMILStyleProperties();
     73 
     74     RenderStyle* overrideComputedStyle(Element*, RenderStyle*);
     75 
     76     bool useOverrideComputedStyle() const { return m_useOverrideComputedStyle; }
     77     void setUseOverrideComputedStyle(bool value) { m_useOverrideComputedStyle = value; }
     78     void setNeedsOverrideComputedStyleUpdate() { m_needsOverrideComputedStyleUpdate = true; }
     79 
     80     void trace(Visitor*);
     81     void processWeakMembers(Visitor*);
     82 
     83 private:
     84 #if ENABLE(OILPAN)
     85     Member<SVGElement> m_owner;
     86 #endif
     87     SVGElementSet m_outgoingReferences;
     88     SVGElementSet m_incomingReferences;
     89     WillBeHeapHashSet<RawPtrWillBeWeakMember<SVGElement> > m_elementInstances;
     90     RawPtrWillBeWeakMember<SVGCursorElement> m_cursorElement;
     91     RawPtrWillBeWeakMember<CSSCursorImageValue> m_cursorImageValue;
     92     RefPtrWillBeMember<SVGElement> m_correspondingElement;
     93     bool m_instancesUpdatesBlocked : 1;
     94     bool m_useOverrideComputedStyle : 1;
     95     bool m_needsOverrideComputedStyleUpdate : 1;
     96     RefPtrWillBeMember<MutableStylePropertySet> m_animatedSMILStyleProperties;
     97     RefPtr<RenderStyle> m_overrideComputedStyle;
     98 };
     99 
    100 }
    101 
    102 #endif
    103