WebCore/NodeRareData.h

   1 /*
   2  * Copyright (C) 2008 Apple Inc. All rights reserved.
   3  * Copyright (C) 2008 David Smith <catfish.man@gmail.com>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public License
  16  * along with this library; see the file COPYING.LIB.  If not, write to
  17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  *
  20  */
  21
  22 #ifndef NodeRareData_h
  23 #define NodeRareData_h
  24
  25 #include "DynamicNodeList.h"
  26 #include "EventListener.h"
  27 #include "RegisteredEventListener.h"
  28 #include "StringHash.h"
  29 #include "QualifiedName.h"
  30 #include <wtf/HashSet.h>
  31 #include <wtf/OwnPtr.h>
  32
  33 namespace WebCore {
  34
  35 struct NodeListsNodeData {
  36     typedef HashSet<DynamicNodeList*> NodeListSet;
  37     NodeListSet m_listsWithCaches;
  38
  39     DynamicNodeList::Caches m_childNodeListCaches;
  40
  41     typedef HashMap<String, DynamicNodeList::Caches*> CacheMap;
  42     CacheMap m_classNodeListCaches;
  43     CacheMap m_nameNodeListCaches;
  44
  45     typedef HashMap<QualifiedName, DynamicNodeList::Caches*> TagCacheMap;
  46     TagCacheMap m_tagNodeListCaches;
  47
  48     ~NodeListsNodeData()
  49     {
  50         deleteAllValues(m_classNodeListCaches);
  51         deleteAllValues(m_nameNodeListCaches);
  52         deleteAllValues(m_tagNodeListCaches);
  53     }
  54
  55     void invalidateCaches();
  56     void invalidateCachesThatDependOnAttributes();
  57     bool isEmpty() const;
  58 };
  59
  60 class NodeRareData {
  61 public:
  62     NodeRareData()
  63         : m_tabIndex(0)
  64         , m_tabIndexWasSetExplicitly(false)
  65         , m_isFocused(false)
  66         , m_needsFocusAppearanceUpdateSoonAfterAttach(false)
  67     {
  68     }
  69
  70     typedef HashMap<const Node*, NodeRareData*> NodeRareDataMap;
  71
  72     static NodeRareDataMap& rareDataMap()
  73     {
  74         static NodeRareDataMap* dataMap = new NodeRareDataMap;
  75         return *dataMap;
  76     }
  77
  78     static NodeRareData* rareDataFromMap(const Node* node)
  79     {
  80         return rareDataMap().get(node);
  81     }
  82
  83     void clearNodeLists() { m_nodeLists.clear(); }
  84     void setNodeLists(std::auto_ptr<NodeListsNodeData> lists) { m_nodeLists.set(lists.release()); }
  85     NodeListsNodeData* nodeLists() const { return m_nodeLists.get(); }
  86
  87     short tabIndex() const { return m_tabIndex; }
  88     void setTabIndexExplicitly(short index) { m_tabIndex = index; m_tabIndexWasSetExplicitly = true; }
  89     bool tabIndexSetExplicitly() const { return m_tabIndexWasSetExplicitly; }
  90
  91     RegisteredEventListenerVector* listeners() { return m_eventListeners.get(); }
  92     RegisteredEventListenerVector& ensureListeners()
  93     {
  94         if (!m_eventListeners)
  95             m_eventListeners.set(new RegisteredEventListenerVector);
  96         return *m_eventListeners;
  97     }
  98
  99     bool isFocused() const { return m_isFocused; }
 100     void setFocused(bool focused) { m_isFocused = focused; }
 101
 102 protected:
 103     // for ElementRareData
 104     bool needsFocusAppearanceUpdateSoonAfterAttach() const { return m_needsFocusAppearanceUpdateSoonAfterAttach; }
 105     void setNeedsFocusAppearanceUpdateSoonAfterAttach(bool needs) { m_needsFocusAppearanceUpdateSoonAfterAttach = needs; }
 106
 107 private:
 108     OwnPtr<NodeListsNodeData> m_nodeLists;
 109     OwnPtr<RegisteredEventListenerVector > m_eventListeners;
 110     short m_tabIndex;
 111     bool m_tabIndexWasSetExplicitly : 1;
 112     bool m_isFocused : 1;
 113     bool m_needsFocusAppearanceUpdateSoonAfterAttach : 1;
 114 };
 115
 116 } //namespace
 117
 118 #endif