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/EventPath.h"
30 #include "wtf/RefCounted.h"
31 #include "wtf/text/AtomicString.h"
36 class EventDispatcher;
37 class HTMLIFrameElement;
46 class Event : public ScriptWrappable, public RefCounted<Event> {
74 static PassRefPtr<Event> create()
76 return adoptRef(new Event);
79 // A factory for a simple event. The event doesn't bubble, and isn't
81 // http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#fire-a-simple-event
82 static PassRefPtr<Event> create(const AtomicString& type)
84 return adoptRef(new Event(type, false, false));
86 static PassRefPtr<Event> createCancelable(const AtomicString& type)
88 return adoptRef(new Event(type, false, true));
90 static PassRefPtr<Event> createBubble(const AtomicString& type)
92 return adoptRef(new Event(type, true, false));
94 static PassRefPtr<Event> createCancelableBubble(const AtomicString& type)
96 return adoptRef(new Event(type, true, true));
99 static PassRefPtr<Event> create(const AtomicString& type, const EventInit& initializer)
101 return adoptRef(new Event(type, initializer));
106 void initEvent(const AtomicString& type, bool canBubble, bool cancelable);
108 const AtomicString& type() const { return m_type; }
109 void setType(const AtomicString& type) { m_type = type; }
111 EventTarget* target() const { return m_target.get(); }
112 void setTarget(PassRefPtr<EventTarget>);
114 EventTarget* currentTarget() const { return m_currentTarget; }
115 void setCurrentTarget(EventTarget* currentTarget) { m_currentTarget = currentTarget; }
117 unsigned short eventPhase() const { return m_eventPhase; }
118 void setEventPhase(unsigned short eventPhase) { m_eventPhase = eventPhase; }
120 bool bubbles() const { return m_canBubble; }
121 bool cancelable() const { return m_cancelable; }
122 DOMTimeStamp timeStamp() const { return m_createTime; }
124 void stopPropagation() { m_propagationStopped = true; }
125 void stopImmediatePropagation() { m_immediatePropagationStopped = true; }
128 EventTarget* srcElement() const { return target(); } // MSIE extension - "the object that fired the event"
130 bool legacyReturnValue() const { return !defaultPrevented(); }
131 void setLegacyReturnValue(bool returnValue) { setDefaultPrevented(!returnValue); }
133 virtual const AtomicString& interfaceName() const;
134 bool hasInterface(const AtomicString&) const;
136 // These events are general classes of events.
137 virtual bool isUIEvent() const;
138 virtual bool isMouseEvent() const;
139 virtual bool isFocusEvent() const;
140 virtual bool isKeyboardEvent() const;
141 virtual bool isTouchEvent() const;
142 virtual bool isGestureEvent() const;
143 virtual bool isWheelEvent() const;
145 // Drag events are a subset of mouse events.
146 virtual bool isDragEvent() const;
148 // These events lack a DOM interface.
149 virtual bool isClipboardEvent() const;
150 virtual bool isBeforeTextInsertedEvent() const;
152 virtual bool isBeforeUnloadEvent() const;
154 bool propagationStopped() const { return m_propagationStopped || m_immediatePropagationStopped; }
155 bool immediatePropagationStopped() const { return m_immediatePropagationStopped; }
157 bool defaultPrevented() const { return m_defaultPrevented; }
158 void preventDefault()
161 m_defaultPrevented = true;
163 void setDefaultPrevented(bool defaultPrevented) { m_defaultPrevented = defaultPrevented; }
165 bool defaultHandled() const { return m_defaultHandled; }
166 void setDefaultHandled() { m_defaultHandled = true; }
168 bool cancelBubble() const { return m_cancelBubble; }
169 void setCancelBubble(bool cancel) { m_cancelBubble = cancel; }
171 Event* underlyingEvent() const { return m_underlyingEvent.get(); }
172 void setUnderlyingEvent(PassRefPtr<Event>);
174 EventPath& eventPath() { ASSERT(m_eventPath); return *m_eventPath; }
175 EventPath& ensureEventPath();
177 PassRefPtr<NodeList> path() const;
179 bool isBeingDispatched() const { return eventPhase(); }
183 Event(const AtomicString& type, bool canBubble, bool cancelable);
184 Event(const AtomicString& type, const EventInit&);
186 virtual void receivedTarget();
187 bool dispatched() const { return m_target; }
194 bool m_propagationStopped;
195 bool m_immediatePropagationStopped;
196 bool m_defaultPrevented;
197 bool m_defaultHandled;
200 unsigned short m_eventPhase;
201 EventTarget* m_currentTarget;
202 RefPtr<EventTarget> m_target;
203 DOMTimeStamp m_createTime;
204 RefPtr<Event> m_underlyingEvent;
205 OwnPtr<EventPath> m_eventPath;
208 #define DEFINE_EVENT_TYPE_CASTS(typeName) \
209 DEFINE_TYPE_CASTS(typeName, Event, event, event->is##typeName(), event.is##typeName())
211 } // namespace WebCore