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, 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 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 46 MouseEvent::MouseEvent() 47 : m_button(0) 48 , m_buttonDown(false) 49 { 50 } 51 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 66 MouseEvent::~MouseEvent() 67 { 68 } 69 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 96 bool MouseEvent::isMouseEvent() const 97 { 98 return true; 99 } 100 101 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 } 107 108 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 } 115 116 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 } 124 125 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 } 133 134 PassRefPtr<SimulatedMouseEvent> SimulatedMouseEvent::create(const AtomicString& eventType, PassRefPtr<AbstractView> view, PassRefPtr<Event> underlyingEvent) 135 { 136 return adoptRef(new SimulatedMouseEvent(eventType, view, underlyingEvent)); 137 } 138 139 SimulatedMouseEvent::~SimulatedMouseEvent() 140 { 141 } 142 143 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 } 154 155 MouseEventDispatchMediator::MouseEventDispatchMediator(PassRefPtr<MouseEvent> mouseEvent) 156 : EventDispatchMediator(mouseEvent) 157 { 158 } 159 160 MouseEvent* MouseEventDispatchMediator::event() const 161 { 162 return static_cast<MouseEvent*>(EventDispatchMediator::event()); 163 } 164 165 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
