2 * Copyright (C) 2001 Peter Kelly (pmk@post.com)
3 * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
4 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
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.
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.
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.
27 #include "bindings/v8/ScriptWrappable.h"
28 #include "core/dom/DOMTimeStamp.h"
29 #include "core/events/EventContext.h"
30 #include "core/events/EventPath.h"
31 #include "wtf/RefCounted.h"
32 #include "wtf/text/AtomicString.h"
38 class EventDispatcher;
39 class HTMLIFrameElement;
48 class Event : public ScriptWrappable, public RefCounted<Event> {
76 static PassRefPtr<Event> create()
78 return adoptRef(new Event);
81 // A factory for a simple event. The event doesn't bubble, and isn't
83 // http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#fire-a-simple-event
84 static PassRefPtr<Event> create(const AtomicString& type)
86 return adoptRef(new Event(type, false, false));
88 static PassRefPtr<Event> createCancelable(const AtomicString& type)
90 return adoptRef(new Event(type, false, true));
92 static PassRefPtr<Event> createBubble(const AtomicString& type)
94 return adoptRef(new Event(type, true, false));
96 static PassRefPtr<Event> createCancelableBubble(const AtomicString& type)
98 return adoptRef(new Event(type, true, true));
101 static PassRefPtr<Event> create(const AtomicString& type, const EventInit& initializer)
103 return adoptRef(new Event(type, initializer));
108 void initEvent(const AtomicString& type, bool canBubble, bool cancelable);
110 const AtomicString& type() const { return m_type; }
111 void setType(const AtomicString& type) { m_type = type; }
113 EventTarget* target() const { return m_target.get(); }
114 void setTarget(PassRefPtr<EventTarget>);
116 EventTarget* currentTarget() const { return m_currentTarget; }
117 void setCurrentTarget(EventTarget* currentTarget) { m_currentTarget = currentTarget; }
119 unsigned short eventPhase() const { return m_eventPhase; }
120 void setEventPhase(unsigned short eventPhase) { m_eventPhase = eventPhase; }
122 bool bubbles() const { return m_canBubble; }
123 bool cancelable() const { return m_cancelable; }
124 DOMTimeStamp timeStamp() const { return m_createTime; }
126 void stopPropagation() { m_propagationStopped = true; }
127 void stopImmediatePropagation() { m_immediatePropagationStopped = true; }
130 EventTarget* srcElement() const { return target(); } // MSIE extension - "the object that fired the event"
132 bool legacyReturnValue() const { return !defaultPrevented(); }
133 void setLegacyReturnValue(bool returnValue) { setDefaultPrevented(!returnValue); }
135 Clipboard* clipboardData() const { return isClipboardEvent() ? clipboard() : 0; }
137 virtual const AtomicString& interfaceName() const;
138 bool hasInterface(const AtomicString&) const;
140 // These events are general classes of events.
141 virtual bool isUIEvent() const;
142 virtual bool isMouseEvent() const;
143 virtual bool isFocusEvent() const;
144 virtual bool isKeyboardEvent() const;
145 virtual bool isTouchEvent() const;
146 virtual bool isGestureEvent() const;
147 virtual bool isWheelEvent() const;
149 // Drag events are a subset of mouse events.
150 virtual bool isDragEvent() const;
152 // These events lack a DOM interface.
153 virtual bool isClipboardEvent() const;
154 virtual bool isBeforeTextInsertedEvent() const;
156 virtual bool isBeforeUnloadEvent() const;
158 bool propagationStopped() const { return m_propagationStopped || m_immediatePropagationStopped; }
159 bool immediatePropagationStopped() const { return m_immediatePropagationStopped; }
161 bool defaultPrevented() const { return m_defaultPrevented; }
162 void preventDefault()
165 m_defaultPrevented = true;
167 void setDefaultPrevented(bool defaultPrevented) { m_defaultPrevented = defaultPrevented; }
169 bool defaultHandled() const { return m_defaultHandled; }
170 void setDefaultHandled() { m_defaultHandled = true; }
172 bool cancelBubble() const { return m_cancelBubble; }
173 void setCancelBubble(bool cancel) { m_cancelBubble = cancel; }
175 Event* underlyingEvent() const { return m_underlyingEvent.get(); }
176 void setUnderlyingEvent(PassRefPtr<Event>);
178 EventPath& eventPath() { return m_eventPath; }
179 PassRefPtr<NodeList> path() const;
181 virtual Clipboard* clipboard() const { return 0; }
183 bool isBeingDispatched() const { return eventPhase(); }
187 Event(const AtomicString& type, bool canBubble, bool cancelable);
188 Event(const AtomicString& type, const EventInit&);
190 virtual void receivedTarget();
191 bool dispatched() const { return m_target; }
198 bool m_propagationStopped;
199 bool m_immediatePropagationStopped;
200 bool m_defaultPrevented;
201 bool m_defaultHandled;
204 unsigned short m_eventPhase;
205 EventTarget* m_currentTarget;
206 RefPtr<EventTarget> m_target;
207 DOMTimeStamp m_createTime;
208 RefPtr<Event> m_underlyingEvent;
209 EventPath m_eventPath;
212 #define DEFINE_EVENT_TYPE_CASTS(typeName) \
213 DEFINE_TYPE_CASTS(typeName, Event, event, event->is##typeName(), event.is##typeName())
215 } // namespace WebCore