1 /*
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, 2005, 2006, 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 #include "config.h"
24 #include "MouseEvent.h"
25
26 #include "EventDispatcher.h"
27 #include "EventNames.h"
28 #include "Frame.h"
29 #include "FrameView.h"
30 #include "PlatformMouseEvent.h"
31
32 namespace WebCore {
33
create(const AtomicString & eventType,PassRefPtr<AbstractView> view,const PlatformMouseEvent & event,int detail,PassRefPtr<Node> relatedTarget)34 PassRefPtr<MouseEvent> MouseEvent::create(const AtomicString& eventType, PassRefPtr<AbstractView> view, const PlatformMouseEvent& event, int detail, PassRefPtr<Node> relatedTarget)
35 {
36 ASSERT(event.eventType() == MouseEventMoved || event.button() != NoButton);
37
38 bool isCancelable = eventType != eventNames().mousemoveEvent;
39
40 return MouseEvent::create(eventType, true, isCancelable, view,
41 detail, event.globalX(), event.globalY(), event.x(), event.y(),
42 event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(), event.button(),
43 relatedTarget, 0, false);
44 }
45
MouseEvent()46 MouseEvent::MouseEvent()
47 : m_button(0)
48 , m_buttonDown(false)
49 {
50 }
51
MouseEvent(const AtomicString & eventType,bool canBubble,bool cancelable,PassRefPtr<AbstractView> view,int detail,int screenX,int screenY,int pageX,int pageY,bool ctrlKey,bool altKey,bool shiftKey,bool metaKey,unsigned short button,PassRefPtr<EventTarget> relatedTarget,PassRefPtr<Clipboard> clipboard,bool isSimulated)52 MouseEvent::MouseEvent(const AtomicString& eventType, bool canBubble, bool cancelable, PassRefPtr<AbstractView> view,
53 int detail, int screenX, int screenY, int pageX, int pageY,
54 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
55 unsigned short button, PassRefPtr<EventTarget> relatedTarget,
56 PassRefPtr<Clipboard> clipboard, bool isSimulated)
57 : MouseRelatedEvent(eventType, canBubble, cancelable, view, detail, screenX, screenY,
58 pageX, pageY, ctrlKey, altKey, shiftKey, metaKey, isSimulated)
59 , m_button(button == (unsigned short)-1 ? 0 : button)
60 , m_buttonDown(button != (unsigned short)-1)
61 , m_relatedTarget(relatedTarget)
62 , m_clipboard(clipboard)
63 {
64 }
65
~MouseEvent()66 MouseEvent::~MouseEvent()
67 {
68 }
69
initMouseEvent(const AtomicString & type,bool canBubble,bool cancelable,PassRefPtr<AbstractView> view,int detail,int screenX,int screenY,int clientX,int clientY,bool ctrlKey,bool altKey,bool shiftKey,bool metaKey,unsigned short button,PassRefPtr<EventTarget> relatedTarget)70 void MouseEvent::initMouseEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView> view,
71 int detail, int screenX, int screenY, int clientX, int clientY,
72 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey,
73 unsigned short button, PassRefPtr<EventTarget> relatedTarget)
74 {
75 if (dispatched())
76 return;
77
78 initUIEvent(type, canBubble, cancelable, view, detail);
79
80 m_screenX = screenX;
81 m_screenY = screenY;
82 m_ctrlKey = ctrlKey;
83 m_altKey = altKey;
84 m_shiftKey = shiftKey;
85 m_metaKey = metaKey;
86 m_button = button == (unsigned short)-1 ? 0 : button;
87 m_buttonDown = button != (unsigned short)-1;
88 m_relatedTarget = relatedTarget;
89
90 initCoordinates(clientX, clientY);
91
92 // FIXME: m_isSimulated is not set to false here.
93 // FIXME: m_clipboard is not set to 0 here.
94 }
95
isMouseEvent() const96 bool MouseEvent::isMouseEvent() const
97 {
98 return true;
99 }
100
isDragEvent() const101 bool MouseEvent::isDragEvent() const
102 {
103 const AtomicString& t = type();
104 return t == eventNames().dragenterEvent || t == eventNames().dragoverEvent || t == eventNames().dragleaveEvent || t == eventNames().dropEvent
105 || t == eventNames().dragstartEvent|| t == eventNames().dragEvent || t == eventNames().dragendEvent;
106 }
107
which() const108 int MouseEvent::which() const
109 {
110 // For the DOM, the return values for left, middle and right mouse buttons are 0, 1, 2, respectively.
111 // For the Netscape "which" property, the return values for left, middle and right mouse buttons are 1, 2, 3, respectively.
112 // So we must add 1.
113 return m_button + 1;
114 }
115
toElement() const116 Node* MouseEvent::toElement() const
117 {
118 // MSIE extension - "the object toward which the user is moving the mouse pointer"
119 if (type() == eventNames().mouseoutEvent)
120 return relatedTarget() ? relatedTarget()->toNode() : 0;
121
122 return target() ? target()->toNode() : 0;
123 }
124
fromElement() const125 Node* MouseEvent::fromElement() const
126 {
127 // MSIE extension - "object from which activation or the mouse pointer is exiting during the event" (huh?)
128 if (type() != eventNames().mouseoutEvent)
129 return relatedTarget() ? relatedTarget()->toNode() : 0;
130
131 return target() ? target()->toNode() : 0;
132 }
133
create(const AtomicString & eventType,PassRefPtr<AbstractView> view,PassRefPtr<Event> underlyingEvent)134 PassRefPtr<SimulatedMouseEvent> SimulatedMouseEvent::create(const AtomicString& eventType, PassRefPtr<AbstractView> view, PassRefPtr<Event> underlyingEvent)
135 {
136 return adoptRef(new SimulatedMouseEvent(eventType, view, underlyingEvent));
137 }
138
~SimulatedMouseEvent()139 SimulatedMouseEvent::~SimulatedMouseEvent()
140 {
141 }
142
SimulatedMouseEvent(const AtomicString & eventType,PassRefPtr<AbstractView> view,PassRefPtr<Event> underlyingEvent)143 SimulatedMouseEvent::SimulatedMouseEvent(const AtomicString& eventType, PassRefPtr<AbstractView> view, PassRefPtr<Event> underlyingEvent)
144 : MouseEvent(eventType, true, true, view, 0, 0, 0, 0, 0, false, false, false, false, 0, 0, 0, true)
145 {
146 if (UIEventWithKeyState* keyStateEvent = findEventWithKeyState(underlyingEvent.get())) {
147 m_ctrlKey = keyStateEvent->ctrlKey();
148 m_altKey = keyStateEvent->altKey();
149 m_shiftKey = keyStateEvent->shiftKey();
150 m_metaKey = keyStateEvent->metaKey();
151 }
152 setUnderlyingEvent(underlyingEvent);
153 }
154
MouseEventDispatchMediator(PassRefPtr<MouseEvent> mouseEvent)155 MouseEventDispatchMediator::MouseEventDispatchMediator(PassRefPtr<MouseEvent> mouseEvent)
156 : EventDispatchMediator(mouseEvent)
157 {
158 }
159
event() const160 MouseEvent* MouseEventDispatchMediator::event() const
161 {
162 return static_cast<MouseEvent*>(EventDispatchMediator::event());
163 }
164
dispatchEvent(EventDispatcher * dispatcher) const165 bool MouseEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const
166 {
167 if (dispatcher->node()->disabled()) // Don't even send DOM events for disabled controls..
168 return true;
169
170 if (event()->type().isEmpty())
171 return false; // Shouldn't happen.
172
173 RefPtr<EventTarget> relatedTarget = dispatcher->adjustRelatedTarget(event(), event()->relatedTarget());
174 event()->setRelatedTarget(relatedTarget);
175
176 dispatcher->dispatchEvent(event());
177 bool swallowEvent = event()->defaultHandled() || event()->defaultPrevented();
178
179 // Special case: If it's a double click event, we also send the dblclick event. This is not part
180 // of the DOM specs, but is used for compatibility with the ondblclick="" attribute. This is treated
181 // as a separate event in other DOM-compliant browsers like Firefox, and so we do the same.
182 if (event()->type() == eventNames().clickEvent && event()->detail() == 2) {
183 RefPtr<MouseEvent> doubleClickEvent = MouseEvent::create();
184 doubleClickEvent->initMouseEvent(eventNames().dblclickEvent, event()->bubbles(), event()->cancelable(), event()->view(),
185 event()->detail(), event()->screenX(), event()->screenY(), event()->clientX(), event()->clientY(),
186 event()->ctrlKey(), event()->altKey(), event()->shiftKey(), event()->metaKey(),
187 event()->button(), relatedTarget);
188 if (event()->defaultHandled())
189 doubleClickEvent->setDefaultHandled();
190 dispatcher->dispatchEvent(doubleClickEvent);
191 if (doubleClickEvent->defaultHandled() || doubleClickEvent->defaultPrevented())
192 swallowEvent = true;
193 }
194
195 return swallowEvent;
196 }
197
198 } // namespace WebCore
199