1 /* 2 * Copyright (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org> 3 * Copyright (C) 2011 Torch Mobile (Beijing) Co. Ltd. All rights reserved. 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 #ifndef SVGElementInstance_h 22 #define SVGElementInstance_h 23 24 #include "bindings/v8/ScriptWrappable.h" 25 #include "core/dom/TreeShared.h" 26 #include "core/events/EventTarget.h" 27 28 namespace WebCore { 29 30 namespace Private { 31 template<class GenericNode, class GenericNodeContainer> 32 void addChildNodesToDeletionQueue(GenericNode*& head, GenericNode*& tail, GenericNodeContainer&); 33 }; 34 35 class Document; 36 class SVGElement; 37 class SVGElementInstanceList; 38 class SVGUseElement; 39 40 // SVGElementInstance mimics Node, but without providing all its functionality 41 class SVGElementInstance : public EventTarget, public ScriptWrappable, public TreeShared<SVGElementInstance> { 42 DEFINE_EVENT_TARGET_REFCOUNTING(TreeShared<SVGElementInstance>); 43 public: 44 static PassRefPtr<SVGElementInstance> create(SVGUseElement* correspondingUseElement, SVGUseElement* directUseElement, PassRefPtr<SVGElement> originalElement); 45 46 virtual ~SVGElementInstance(); 47 setParentOrShadowHostNode(SVGElementInstance * instance)48 void setParentOrShadowHostNode(SVGElementInstance* instance) { m_parentInstance = instance; } 49 50 virtual const AtomicString& interfaceName() const; 51 virtual ExecutionContext* executionContext() const; 52 53 virtual bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture); 54 virtual bool removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture); 55 virtual void removeAllEventListeners(); 56 57 using EventTarget::dispatchEvent; 58 virtual bool dispatchEvent(PassRefPtr<Event>) OVERRIDE; 59 correspondingElement()60 SVGElement* correspondingElement() const { return m_element.get(); } correspondingUseElement()61 SVGUseElement* correspondingUseElement() const { return m_correspondingUseElement; } directUseElement()62 SVGUseElement* directUseElement() const { return m_directUseElement; } shadowTreeElement()63 SVGElement* shadowTreeElement() const { return m_shadowTreeElement.get(); } 64 65 void detach(); 66 parentNode()67 SVGElementInstance* parentNode() const { return m_parentInstance; } 68 PassRefPtr<SVGElementInstanceList> childNodes(); 69 previousSibling()70 SVGElementInstance* previousSibling() const { return m_previousSibling; } nextSibling()71 SVGElementInstance* nextSibling() const { return m_nextSibling; } 72 firstChild()73 SVGElementInstance* firstChild() const { return m_firstChild; } lastChild()74 SVGElementInstance* lastChild() const { return m_lastChild; } 75 76 inline Document* ownerDocument() const; 77 78 class InvalidationGuard { 79 WTF_MAKE_NONCOPYABLE(InvalidationGuard); 80 public: InvalidationGuard(SVGElement * element)81 InvalidationGuard(SVGElement* element) : m_element(element) { } ~InvalidationGuard()82 ~InvalidationGuard() { SVGElementInstance::invalidateAllInstancesOfElement(m_element); } 83 private: 84 SVGElement* m_element; 85 }; 86 87 class InstanceUpdateBlocker { 88 WTF_MAKE_NONCOPYABLE(InstanceUpdateBlocker); 89 public: 90 InstanceUpdateBlocker(SVGElement* targetElement); 91 ~InstanceUpdateBlocker(); 92 93 private: 94 SVGElement* m_targetElement; 95 }; 96 97 static void invalidateAllInstancesOfElement(SVGElement*); 98 99 // EventTarget API 100 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), abort); 101 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), blur); 102 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), change); 103 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), click); 104 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), contextmenu); 105 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dblclick); 106 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), error); 107 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), focus); 108 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), input); 109 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), keydown); 110 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), keypress); 111 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), keyup); 112 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), load); 113 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mousedown); 114 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mouseenter); 115 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mouseleave); 116 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mousemove); 117 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mouseout); 118 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mouseover); 119 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mouseup); 120 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mousewheel); 121 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), wheel); 122 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), beforecut); 123 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), cut); 124 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), beforecopy); 125 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), copy); 126 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), beforepaste); 127 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), paste); 128 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragenter); 129 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragover); 130 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragleave); 131 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), drop); 132 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragstart); 133 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), drag); 134 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragend); 135 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), reset); 136 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), resize); 137 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), scroll); 138 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), search); 139 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), select); 140 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), selectstart); 141 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), submit); 142 DECLARE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), unload); 143 144 private: 145 friend class SVGUseElement; 146 friend class TreeShared<SVGElementInstance>; 147 148 SVGElementInstance(SVGUseElement*, SVGUseElement*, PassRefPtr<SVGElement> originalElement); 149 150 void removedLastRef(); hasTreeSharedParent()151 bool hasTreeSharedParent() const { return !!m_parentInstance; } 152 153 virtual Node* toNode(); 154 155 void appendChild(PassRefPtr<SVGElementInstance> child); 156 void setShadowTreeElement(SVGElement*); 157 158 template<class GenericNode, class GenericNodeContainer> 159 friend void appendChildToContainer(GenericNode& child, GenericNodeContainer&); 160 161 template<class GenericNode, class GenericNodeContainer> 162 friend void removeDetachedChildrenInContainer(GenericNodeContainer&); 163 164 template<class GenericNode, class GenericNodeContainer> 165 friend void Private::addChildNodesToDeletionQueue(GenericNode*& head, GenericNode*& tail, GenericNodeContainer&); 166 hasChildNodes()167 bool hasChildNodes() const { return m_firstChild; } 168 setFirstChild(SVGElementInstance * child)169 void setFirstChild(SVGElementInstance* child) { m_firstChild = child; } setLastChild(SVGElementInstance * child)170 void setLastChild(SVGElementInstance* child) { m_lastChild = child; } 171 setNextSibling(SVGElementInstance * sibling)172 void setNextSibling(SVGElementInstance* sibling) { m_nextSibling = sibling; } setPreviousSibling(SVGElementInstance * sibling)173 void setPreviousSibling(SVGElementInstance* sibling) { m_previousSibling = sibling; } 174 175 virtual EventTargetData* eventTargetData() OVERRIDE; 176 virtual EventTargetData& ensureEventTargetData() OVERRIDE; 177 178 SVGElementInstance* m_parentInstance; 179 180 SVGUseElement* m_correspondingUseElement; 181 SVGUseElement* m_directUseElement; 182 RefPtr<SVGElement> m_element; 183 RefPtr<SVGElement> m_shadowTreeElement; 184 185 SVGElementInstance* m_previousSibling; 186 SVGElementInstance* m_nextSibling; 187 188 SVGElementInstance* m_firstChild; 189 SVGElementInstance* m_lastChild; 190 }; 191 192 } // namespace WebCore 193 194 #endif 195