1 /* 2 * Copyright (C) 2001 Peter Kelly (pmk (at) post.com) 3 * Copyright (C) 2001 Tobias Anton (anton (at) stud.fbi.fh-darmstadt.de) 4 * Copyright (C) 2006 Samuel Weinig (sam.weinig (at) gmail.com) 5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24 #ifndef Event_h 25 #define Event_h 26 27 #include "bindings/v8/ScriptWrappable.h" 28 #include "core/dom/DOMTimeStamp.h" 29 #include "core/dom/EventContext.h" 30 #include "wtf/RefCounted.h" 31 #include "wtf/text/AtomicString.h" 32 33 namespace WebCore { 34 35 class Clipboard; 36 class EventTarget; 37 class EventDispatcher; 38 class HTMLIFrameElement; 39 40 struct EventInit { 41 EventInit(); 42 43 bool bubbles; 44 bool cancelable; 45 }; 46 47 class Event : public ScriptWrappable, public RefCounted<Event> { 48 public: 49 enum PhaseType { 50 NONE = 0, 51 CAPTURING_PHASE = 1, 52 AT_TARGET = 2, 53 BUBBLING_PHASE = 3 54 }; 55 56 enum EventType { 57 MOUSEDOWN = 1, 58 MOUSEUP = 2, 59 MOUSEOVER = 4, 60 MOUSEOUT = 8, 61 MOUSEMOVE = 16, 62 MOUSEDRAG = 32, 63 CLICK = 64, 64 DBLCLICK = 128, 65 KEYDOWN = 256, 66 KEYUP = 512, 67 KEYPRESS = 1024, 68 DRAGDROP = 2048, 69 FOCUS = 4096, 70 BLUR = 8192, 71 SELECT = 16384, 72 CHANGE = 32768 73 }; 74 75 static PassRefPtr<Event> create() 76 { 77 return adoptRef(new Event); 78 } 79 static PassRefPtr<Event> create(const AtomicString& type, bool canBubble, bool cancelable) 80 { 81 return adoptRef(new Event(type, canBubble, cancelable)); 82 } 83 84 static PassRefPtr<Event> create(const AtomicString& type, const EventInit& initializer) 85 { 86 return adoptRef(new Event(type, initializer)); 87 } 88 89 virtual ~Event(); 90 91 void initEvent(const AtomicString& type, bool canBubble, bool cancelable); 92 93 const AtomicString& type() const { return m_type; } 94 void setType(const AtomicString& type) { m_type = type; } 95 96 EventTarget* target() const { return m_target.get(); } 97 void setTarget(PassRefPtr<EventTarget>); 98 99 EventTarget* currentTarget() const { return m_currentTarget; } 100 void setCurrentTarget(EventTarget* currentTarget) { m_currentTarget = currentTarget; } 101 102 unsigned short eventPhase() const { return m_eventPhase; } 103 void setEventPhase(unsigned short eventPhase) { m_eventPhase = eventPhase; } 104 105 bool bubbles() const { return m_canBubble; } 106 bool cancelable() const { return m_cancelable; } 107 DOMTimeStamp timeStamp() const { return m_createTime; } 108 109 void stopPropagation() { m_propagationStopped = true; } 110 void stopImmediatePropagation() { m_immediatePropagationStopped = true; } 111 112 // IE Extensions 113 EventTarget* srcElement() const { return target(); } // MSIE extension - "the object that fired the event" 114 115 bool returnValue() const { return !defaultPrevented(); } 116 void setReturnValue(bool returnValue) { setDefaultPrevented(!returnValue); } 117 118 Clipboard* clipboardData() const { return isClipboardEvent() ? clipboard() : 0; } 119 120 virtual const AtomicString& interfaceName() const; 121 bool hasInterface(const AtomicString&) const; 122 123 // These events are general classes of events. 124 virtual bool isUIEvent() const; 125 virtual bool isMouseEvent() const; 126 virtual bool isFocusEvent() const; 127 virtual bool isKeyboardEvent() const; 128 virtual bool isTouchEvent() const; 129 130 // Drag events are a subset of mouse events. 131 virtual bool isDragEvent() const; 132 133 // These events lack a DOM interface. 134 virtual bool isClipboardEvent() const; 135 virtual bool isBeforeTextInsertedEvent() const; 136 137 bool propagationStopped() const { return m_propagationStopped || m_immediatePropagationStopped; } 138 bool immediatePropagationStopped() const { return m_immediatePropagationStopped; } 139 140 bool defaultPrevented() const { return m_defaultPrevented; } 141 void preventDefault() 142 { 143 if (m_cancelable) 144 m_defaultPrevented = true; 145 } 146 void setDefaultPrevented(bool defaultPrevented) { m_defaultPrevented = defaultPrevented; } 147 148 bool defaultHandled() const { return m_defaultHandled; } 149 void setDefaultHandled() { m_defaultHandled = true; } 150 151 bool cancelBubble() const { return m_cancelBubble; } 152 void setCancelBubble(bool cancel) { m_cancelBubble = cancel; } 153 154 Event* underlyingEvent() const { return m_underlyingEvent.get(); } 155 void setUnderlyingEvent(PassRefPtr<Event>); 156 157 EventPath& eventPath() { return m_eventPath; } 158 PassRefPtr<NodeList> path() const; 159 160 virtual bool storesResultAsString() const; 161 virtual void storeResult(const String&); 162 163 virtual Clipboard* clipboard() const { return 0; } 164 165 bool isBeingDispatched() const { return eventPhase(); } 166 167 protected: 168 Event(); 169 Event(const AtomicString& type, bool canBubble, bool cancelable); 170 Event(const AtomicString& type, const EventInit&); 171 172 virtual void receivedTarget(); 173 bool dispatched() const { return m_target; } 174 175 private: 176 AtomicString m_type; 177 bool m_canBubble; 178 bool m_cancelable; 179 180 bool m_propagationStopped; 181 bool m_immediatePropagationStopped; 182 bool m_defaultPrevented; 183 bool m_defaultHandled; 184 bool m_cancelBubble; 185 186 unsigned short m_eventPhase; 187 EventTarget* m_currentTarget; 188 RefPtr<EventTarget> m_target; 189 DOMTimeStamp m_createTime; 190 RefPtr<Event> m_underlyingEvent; 191 EventPath m_eventPath; 192 }; 193 194 } // namespace WebCore 195 196 #endif // Event_h 197
