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 #if ENABLE(SVG) 25 #include "EventTarget.h" 26 #include "SVGElement.h" 27 #include "TreeShared.h" 28 29 namespace WebCore { 30 31 namespace Private { 32 template<class GenericNode, class GenericNodeContainer> 33 void addChildNodesToDeletionQueue(GenericNode*& head, GenericNode*& tail, GenericNodeContainer* container); 34 }; 35 36 class SVGUseElement; 37 class SVGElementInstanceList; 38 39 // SVGElementInstance mimics Node, but without providing all its functionality 40 class SVGElementInstance : public TreeShared<SVGElementInstance>, 41 public EventTarget { 42 public: create(SVGUseElement * correspondingUseElement,SVGUseElement * directUseElement,PassRefPtr<SVGElement> originalElement)43 static PassRefPtr<SVGElementInstance> create(SVGUseElement* correspondingUseElement, SVGUseElement* directUseElement, PassRefPtr<SVGElement> originalElement) 44 { 45 return adoptRef(new SVGElementInstance(correspondingUseElement, directUseElement, originalElement)); 46 } 47 48 virtual ~SVGElementInstance(); 49 50 virtual ScriptExecutionContext* scriptExecutionContext() const; 51 52 virtual bool addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture); 53 virtual bool removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture); 54 virtual void removeAllEventListeners(); 55 using EventTarget::dispatchEvent; 56 virtual bool dispatchEvent(PassRefPtr<Event>); 57 correspondingElement()58 SVGElement* correspondingElement() const { return m_element.get(); } correspondingUseElement()59 SVGUseElement* correspondingUseElement() const { return m_correspondingUseElement; } directUseElement()60 SVGUseElement* directUseElement() const { return m_directUseElement; } shadowTreeElement()61 SVGElement* shadowTreeElement() const { return m_shadowTreeElement.get(); } clearUseElements()62 void clearUseElements() 63 { 64 m_directUseElement = 0; 65 m_correspondingUseElement = 0; 66 } 67 parentNode()68 SVGElementInstance* parentNode() const { return parent(); } 69 PassRefPtr<SVGElementInstanceList> childNodes(); 70 previousSibling()71 SVGElementInstance* previousSibling() const { return m_previousSibling; } nextSibling()72 SVGElementInstance* nextSibling() const { return m_nextSibling; } 73 firstChild()74 SVGElementInstance* firstChild() const { return m_firstChild; } lastChild()75 SVGElementInstance* lastChild() const { return m_lastChild; } 76 ownerDocument()77 Document* ownerDocument() const { return m_element ? m_element->ownerDocument() : 0; } 78 79 static void invalidateAllInstancesOfElement(SVGElement*); 80 81 using TreeShared<SVGElementInstance>::ref; 82 using TreeShared<SVGElementInstance>::deref; 83 84 // EventTarget API 85 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), abort); 86 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), blur); 87 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), change); 88 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), click); 89 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), contextmenu); 90 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dblclick); 91 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), error); 92 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), focus); 93 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), input); 94 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), keydown); 95 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), keypress); 96 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), keyup); 97 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), load); 98 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mousedown); 99 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mousemove); 100 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mouseout); 101 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mouseover); 102 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mouseup); 103 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), mousewheel); 104 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), beforecut); 105 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), cut); 106 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), beforecopy); 107 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), copy); 108 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), beforepaste); 109 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), paste); 110 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragenter); 111 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragover); 112 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragleave); 113 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), drop); 114 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragstart); 115 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), drag); 116 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), dragend); 117 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), reset); 118 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), resize); 119 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), scroll); 120 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), search); 121 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), select); 122 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), selectstart); 123 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), submit); 124 DEFINE_FORWARDING_ATTRIBUTE_EVENT_LISTENER(correspondingElement(), unload); 125 126 private: 127 friend class SVGUseElement; 128 129 SVGElementInstance(SVGUseElement*, SVGUseElement*, PassRefPtr<SVGElement> originalElement); 130 toNode()131 virtual Node* toNode() { return shadowTreeElement(); } toSVGElementInstance()132 virtual SVGElementInstance* toSVGElementInstance() { return this; } 133 134 void appendChild(PassRefPtr<SVGElementInstance> child); 135 void setShadowTreeElement(SVGElement*); 136 137 template<class GenericNode, class GenericNodeContainer> 138 friend void appendChildToContainer(GenericNode* child, GenericNodeContainer* container); 139 140 template<class GenericNode, class GenericNodeContainer> 141 friend void removeAllChildrenInContainer(GenericNodeContainer* container); 142 143 template<class GenericNode, class GenericNodeContainer> 144 friend void Private::addChildNodesToDeletionQueue(GenericNode*& head, GenericNode*& tail, GenericNodeContainer* container); 145 hasChildNodes()146 bool hasChildNodes() const { return m_firstChild; } 147 setFirstChild(SVGElementInstance * child)148 void setFirstChild(SVGElementInstance* child) { m_firstChild = child; } setLastChild(SVGElementInstance * child)149 void setLastChild(SVGElementInstance* child) { m_lastChild = child; } 150 setNextSibling(SVGElementInstance * sibling)151 void setNextSibling(SVGElementInstance* sibling) { m_nextSibling = sibling; } setPreviousSibling(SVGElementInstance * sibling)152 void setPreviousSibling(SVGElementInstance* sibling) { m_previousSibling = sibling; } 153 refEventTarget()154 virtual void refEventTarget() { ref(); } derefEventTarget()155 virtual void derefEventTarget() { deref(); } 156 virtual EventTargetData* eventTargetData(); 157 virtual EventTargetData* ensureEventTargetData(); 158 159 SVGUseElement* m_correspondingUseElement; 160 SVGUseElement* m_directUseElement; 161 RefPtr<SVGElement> m_element; 162 RefPtr<SVGElement> m_shadowTreeElement; 163 164 SVGElementInstance* m_previousSibling; 165 SVGElementInstance* m_nextSibling; 166 167 SVGElementInstance* m_firstChild; 168 SVGElementInstance* m_lastChild; 169 }; 170 171 } // namespace WebCore 172 173 #endif // ENABLE(SVG) 174 #endif 175