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 "Clipboard.h" 27#include "EventDispatcher.h" 28#include "EventNames.h" 29#include "EventRetargeter.h" 30#include "Frame.h" 31#include "FrameView.h" 32#include "HTMLIFrameElement.h" 33#include "PlatformMouseEvent.h" 34 35namespace WebCore { 36 37MouseEventInit::MouseEventInit() 38 : screenX(0) 39 , screenY(0) 40 , clientX(0) 41 , clientY(0) 42 , ctrlKey(false) 43 , altKey(false) 44 , shiftKey(false) 45 , metaKey(false) 46 , button(0) 47 , relatedTarget(0) 48{ 49} 50 51PassRefPtr<MouseEvent> MouseEvent::create(const AtomicString& type, const MouseEventInit& initializer) 52{ 53 return adoptRef(new MouseEvent(type, initializer)); 54} 55 56PassRefPtr<MouseEvent> MouseEvent::create(const AtomicString& eventType, PassRefPtr<AbstractView> view, const PlatformMouseEvent& event, int detail, PassRefPtr<Node> relatedTarget) 57{ 58 ASSERT(event.type() == PlatformEvent::MouseMoved || event.button() != NoButton); 59 60 bool isMouseEnterOrLeave = eventType == eventNames().mouseenterEvent || eventType == eventNames().mouseleaveEvent; 61 bool isCancelable = eventType != eventNames().mousemoveEvent && !isMouseEnterOrLeave; 62 bool canBubble = !isMouseEnterOrLeave; 63 64 return MouseEvent::create(eventType, canBubble, isCancelable, view, 65 detail, event.globalPosition().x(), event.globalPosition().y(), event.position().x(), event.position().y(), 66#if ENABLE(POINTER_LOCK) 67 event.movementDelta().x(), event.movementDelta().y(), 68#endif 69 event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(), event.button(), 70 relatedTarget, 0, false); 71} 72 73PassRefPtr<MouseEvent> MouseEvent::create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView> view, 74 int detail, int screenX, int screenY, int pageX, int pageY, 75#if ENABLE(POINTER_LOCK) 76 int movementX, int movementY, 77#endif 78 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short button, 79 PassRefPtr<EventTarget> relatedTarget) 80 81{ 82 return MouseEvent::create(type, canBubble, cancelable, view, 83 detail, screenX, screenY, pageX, pageY, 84#if ENABLE(POINTER_LOCK) 85 movementX, movementY, 86#endif 87 ctrlKey, altKey, shiftKey, metaKey, button, relatedTarget, 0, false); 88} 89 90PassRefPtr<MouseEvent> MouseEvent::create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView> view, 91 int detail, int screenX, int screenY, int pageX, int pageY, 92#if ENABLE(POINTER_LOCK) 93 int movementX, int movementY, 94#endif 95 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short button, 96 PassRefPtr<EventTarget> relatedTarget, PassRefPtr<Clipboard> clipboard, bool isSimulated) 97{ 98 return adoptRef(new MouseEvent(type, canBubble, cancelable, view, 99 detail, screenX, screenY, pageX, pageY, 100#if ENABLE(POINTER_LOCK) 101 movementX, movementY, 102#endif 103 ctrlKey, altKey, shiftKey, metaKey, button, relatedTarget, clipboard, isSimulated)); 104} 105 106MouseEvent::MouseEvent() 107 : m_button(0) 108 , m_buttonDown(false) 109{ 110} 111 112MouseEvent::MouseEvent(const AtomicString& eventType, bool canBubble, bool cancelable, PassRefPtr<AbstractView> view, 113 int detail, int screenX, int screenY, int pageX, int pageY, 114#if ENABLE(POINTER_LOCK) 115 int movementX, int movementY, 116#endif 117 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, 118 unsigned short button, PassRefPtr<EventTarget> relatedTarget, 119 PassRefPtr<Clipboard> clipboard, bool isSimulated) 120 : MouseRelatedEvent(eventType, canBubble, cancelable, view, detail, IntPoint(screenX, screenY), 121 IntPoint(pageX, pageY), 122#if ENABLE(POINTER_LOCK) 123 IntPoint(movementX, movementY), 124#endif 125 ctrlKey, altKey, shiftKey, metaKey, isSimulated) 126 , m_button(button == (unsigned short)-1 ? 0 : button) 127 , m_buttonDown(button != (unsigned short)-1) 128 , m_relatedTarget(relatedTarget) 129 , m_clipboard(clipboard) 130{ 131} 132 133MouseEvent::MouseEvent(const AtomicString& eventType, const MouseEventInit& initializer) 134 : MouseRelatedEvent(eventType, initializer.bubbles, initializer.cancelable, initializer.view, initializer.detail, IntPoint(initializer.screenX, initializer.screenY), 135 IntPoint(0 /* pageX */, 0 /* pageY */), 136#if ENABLE(POINTER_LOCK) 137 IntPoint(0 /* movementX */, 0 /* movementY */), 138#endif 139 initializer.ctrlKey, initializer.altKey, initializer.shiftKey, initializer.metaKey, false /* isSimulated */) 140 , m_button(initializer.button == (unsigned short)-1 ? 0 : initializer.button) 141 , m_buttonDown(initializer.button != (unsigned short)-1) 142 , m_relatedTarget(initializer.relatedTarget) 143 , m_clipboard(0 /* clipboard */) 144{ 145 initCoordinates(IntPoint(initializer.clientX, initializer.clientY)); 146} 147 148MouseEvent::~MouseEvent() 149{ 150} 151 152void MouseEvent::initMouseEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView> view, 153 int detail, int screenX, int screenY, int clientX, int clientY, 154 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, 155 unsigned short button, PassRefPtr<EventTarget> relatedTarget) 156{ 157 if (dispatched()) 158 return; 159 160 initUIEvent(type, canBubble, cancelable, view, detail); 161 162 m_screenLocation = IntPoint(screenX, screenY); 163 m_ctrlKey = ctrlKey; 164 m_altKey = altKey; 165 m_shiftKey = shiftKey; 166 m_metaKey = metaKey; 167 m_button = button == (unsigned short)-1 ? 0 : button; 168 m_buttonDown = button != (unsigned short)-1; 169 m_relatedTarget = relatedTarget; 170 171 initCoordinates(IntPoint(clientX, clientY)); 172 173 // FIXME: m_isSimulated is not set to false here. 174 // FIXME: m_clipboard is not set to 0 here. 175} 176 177const AtomicString& MouseEvent::interfaceName() const 178{ 179 return eventNames().interfaceForMouseEvent; 180} 181 182bool MouseEvent::isMouseEvent() const 183{ 184 return true; 185} 186 187bool MouseEvent::isDragEvent() const 188{ 189 const AtomicString& t = type(); 190 return t == eventNames().dragenterEvent || t == eventNames().dragoverEvent || t == eventNames().dragleaveEvent || t == eventNames().dropEvent 191 || t == eventNames().dragstartEvent|| t == eventNames().dragEvent || t == eventNames().dragendEvent; 192} 193 194int MouseEvent::which() const 195{ 196 // For the DOM, the return values for left, middle and right mouse buttons are 0, 1, 2, respectively. 197 // For the Netscape "which" property, the return values for left, middle and right mouse buttons are 1, 2, 3, respectively. 198 // So we must add 1. 199 if (!m_buttonDown) 200 return 0; 201 return m_button + 1; 202} 203 204Node* MouseEvent::toElement() const 205{ 206 // MSIE extension - "the object toward which the user is moving the mouse pointer" 207 if (type() == eventNames().mouseoutEvent || type() == eventNames().mouseleaveEvent) 208 return relatedTarget() ? relatedTarget()->toNode() : 0; 209 210 return target() ? target()->toNode() : 0; 211} 212 213Node* MouseEvent::fromElement() const 214{ 215 // MSIE extension - "object from which activation or the mouse pointer is exiting during the event" (huh?) 216 if (type() != eventNames().mouseoutEvent && type() != eventNames().mouseleaveEvent) 217 return relatedTarget() ? relatedTarget()->toNode() : 0; 218 219 return target() ? target()->toNode() : 0; 220} 221 222// FIXME: Fix positioning. e.g. We need to consider border/padding. 223// https://bugs.webkit.org/show_bug.cgi?id=93696 224inline static int adjustedClientX(int innerClientX, HTMLIFrameElement* iframe, FrameView* frameView) 225{ 226 return iframe->offsetLeft() - frameView->scrollX() + innerClientX; 227} 228 229inline static int adjustedClientY(int innerClientY, HTMLIFrameElement* iframe, FrameView* frameView) 230{ 231 return iframe->offsetTop() - frameView->scrollY() + innerClientY; 232} 233 234PassRefPtr<Event> MouseEvent::cloneFor(HTMLIFrameElement* iframe) const 235{ 236 ASSERT(iframe); 237 RefPtr<MouseEvent> clonedMouseEvent = MouseEvent::create(); 238 Frame* frame = iframe->document()->frame(); 239 FrameView* frameView = frame ? frame->view() : 0; 240 clonedMouseEvent->initMouseEvent(type(), bubbles(), cancelable(), 241 iframe->document()->defaultView(), 242 detail(), screenX(), screenY(), 243 frameView ? adjustedClientX(clientX(), iframe, frameView) : 0, 244 frameView ? adjustedClientY(clientY(), iframe, frameView) : 0, 245 ctrlKey(), altKey(), shiftKey(), metaKey(), 246 button(), 247 // Nullifies relatedTarget. 248 0); 249 return clonedMouseEvent.release(); 250} 251 252PassRefPtr<SimulatedMouseEvent> SimulatedMouseEvent::create(const AtomicString& eventType, PassRefPtr<AbstractView> view, PassRefPtr<Event> underlyingEvent) 253{ 254 return adoptRef(new SimulatedMouseEvent(eventType, view, underlyingEvent)); 255} 256 257SimulatedMouseEvent::~SimulatedMouseEvent() 258{ 259} 260 261SimulatedMouseEvent::SimulatedMouseEvent(const AtomicString& eventType, PassRefPtr<AbstractView> view, PassRefPtr<Event> underlyingEvent) 262 : MouseEvent(eventType, true, true, view, 0, 0, 0, 0, 0, 263#if ENABLE(POINTER_LOCK) 264 0, 0, 265#endif 266 false, false, false, false, 0, 0, 0, true) 267{ 268 if (UIEventWithKeyState* keyStateEvent = findEventWithKeyState(underlyingEvent.get())) { 269 m_ctrlKey = keyStateEvent->ctrlKey(); 270 m_altKey = keyStateEvent->altKey(); 271 m_shiftKey = keyStateEvent->shiftKey(); 272 m_metaKey = keyStateEvent->metaKey(); 273 } 274 setUnderlyingEvent(underlyingEvent); 275 276 if (this->underlyingEvent() && this->underlyingEvent()->isMouseEvent()) { 277 MouseEvent* mouseEvent = static_cast<MouseEvent*>(this->underlyingEvent()); 278 m_screenLocation = mouseEvent->screenLocation(); 279 initCoordinates(mouseEvent->clientLocation()); 280 } 281} 282 283PassRefPtr<MouseEventDispatchMediator> MouseEventDispatchMediator::create(PassRefPtr<MouseEvent> mouseEvent, MouseEventType mouseEventType) 284{ 285 return adoptRef(new MouseEventDispatchMediator(mouseEvent, mouseEventType)); 286} 287 288MouseEventDispatchMediator::MouseEventDispatchMediator(PassRefPtr<MouseEvent> mouseEvent, MouseEventType mouseEventType) 289 : EventDispatchMediator(mouseEvent), m_mouseEventType(mouseEventType) 290{ 291} 292 293MouseEvent* MouseEventDispatchMediator::event() const 294{ 295 return static_cast<MouseEvent*>(EventDispatchMediator::event()); 296} 297 298bool MouseEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const 299{ 300 if (isSyntheticMouseEvent()) { 301 EventRetargeter::adjustForMouseEvent(dispatcher->node(), *event(), dispatcher->eventPath()); 302 return dispatcher->dispatch(); 303 } 304 305 if (isDisabledFormControl(dispatcher->node())) 306 return false; 307 308 if (event()->type().isEmpty()) 309 return true; // Shouldn't happen. 310 311 ASSERT(!event()->target() || event()->target() != event()->relatedTarget()); 312 313 EventTarget* relatedTarget = event()->relatedTarget(); 314 EventRetargeter::adjustForMouseEvent(dispatcher->node(), *event(), dispatcher->eventPath()); 315 316 dispatcher->dispatch(); 317 bool swallowEvent = event()->defaultHandled() || event()->defaultPrevented(); 318 319 if (event()->type() != eventNames().clickEvent || event()->detail() != 2) 320 return !swallowEvent; 321 322 // Special case: If it's a double click event, we also send the dblclick event. This is not part 323 // of the DOM specs, but is used for compatibility with the ondblclick="" attribute. This is treated 324 // as a separate event in other DOM-compliant browsers like Firefox, and so we do the same. 325 RefPtr<MouseEvent> doubleClickEvent = MouseEvent::create(); 326 doubleClickEvent->initMouseEvent(eventNames().dblclickEvent, event()->bubbles(), event()->cancelable(), event()->view(), 327 event()->detail(), event()->screenX(), event()->screenY(), event()->clientX(), event()->clientY(), 328 event()->ctrlKey(), event()->altKey(), event()->shiftKey(), event()->metaKey(), 329 event()->button(), relatedTarget); 330 if (event()->defaultHandled()) 331 doubleClickEvent->setDefaultHandled(); 332 EventDispatcher::dispatchEvent(dispatcher->node(), MouseEventDispatchMediator::create(doubleClickEvent)); 333 if (doubleClickEvent->defaultHandled() || doubleClickEvent->defaultPrevented()) 334 return false; 335 return !swallowEvent; 336} 337 338} // namespace WebCore 339