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