1/* 2 * Copyright 2008, The Android Open Source Project 3 * Copyright (C) 2012 Research In Motion Limited. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include "config.h" 28 29#include "core/events/TouchEvent.h" 30 31#include "core/events/EventDispatcher.h" 32#include "core/frame/FrameConsole.h" 33#include "core/frame/LocalFrame.h" 34#include "core/inspector/ConsoleMessage.h" 35 36namespace blink { 37 38TouchEvent::TouchEvent() 39{ 40} 41 42TouchEvent::TouchEvent(TouchList* touches, TouchList* targetTouches, 43 TouchList* changedTouches, const AtomicString& type, 44 PassRefPtrWillBeRawPtr<AbstractView> view, 45 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool cancelable) 46 : UIEventWithKeyState(type, true, cancelable, view, 0, 47 ctrlKey, altKey, shiftKey, metaKey) 48 , m_touches(touches) 49 , m_targetTouches(targetTouches) 50 , m_changedTouches(changedTouches) 51{ 52} 53 54TouchEvent::~TouchEvent() 55{ 56} 57 58void TouchEvent::initTouchEvent(TouchList* touches, TouchList* targetTouches, 59 TouchList* changedTouches, const AtomicString& type, 60 PassRefPtrWillBeRawPtr<AbstractView> view, 61 int, int, int, int, 62 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey) 63{ 64 if (dispatched()) 65 return; 66 67 bool cancelable = true; 68 if (type == EventTypeNames::touchcancel) 69 cancelable = false; 70 71 initUIEvent(type, true, cancelable, view, 0); 72 73 m_touches = touches; 74 m_targetTouches = targetTouches; 75 m_changedTouches = changedTouches; 76 m_ctrlKey = ctrlKey; 77 m_altKey = altKey; 78 m_shiftKey = shiftKey; 79 m_metaKey = metaKey; 80} 81 82const AtomicString& TouchEvent::interfaceName() const 83{ 84 return EventNames::TouchEvent; 85} 86 87bool TouchEvent::isTouchEvent() const 88{ 89 return true; 90} 91 92void TouchEvent::preventDefault() 93{ 94 UIEventWithKeyState::preventDefault(); 95 96 // A common developer error is to wait too long before attempting to stop 97 // scrolling by consuming a touchmove event. Generate a warning if this 98 // event is uncancelable. 99 if (!cancelable() && view() && view()->frame()) { 100 view()->frame()->console().addMessage(ConsoleMessage::create(JSMessageSource, WarningMessageLevel, 101 "Ignored attempt to cancel a " + type() + " event with cancelable=false, for example because scrolling is in progress and cannot be interrupted.")); 102 } 103} 104void TouchEvent::trace(Visitor* visitor) 105{ 106 visitor->trace(m_touches); 107 visitor->trace(m_targetTouches); 108 visitor->trace(m_changedTouches); 109 UIEventWithKeyState::trace(visitor); 110} 111 112PassRefPtrWillBeRawPtr<TouchEventDispatchMediator> TouchEventDispatchMediator::create(PassRefPtrWillBeRawPtr<TouchEvent> touchEvent) 113{ 114 return adoptRefWillBeNoop(new TouchEventDispatchMediator(touchEvent)); 115} 116 117TouchEventDispatchMediator::TouchEventDispatchMediator(PassRefPtrWillBeRawPtr<TouchEvent> touchEvent) 118 : EventDispatchMediator(touchEvent) 119{ 120} 121 122TouchEvent* TouchEventDispatchMediator::event() const 123{ 124 return toTouchEvent(EventDispatchMediator::event()); 125} 126 127bool TouchEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const 128{ 129 event()->eventPath().adjustForTouchEvent(dispatcher->node(), *event()); 130 return dispatcher->dispatch(); 131} 132 133} // namespace blink 134