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https://github.com/flutter/flutter.git
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136 lines
4.5 KiB
C++
136 lines
4.5 KiB
C++
/*
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* Copyright 2008, The Android Open Source Project
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* Copyright (C) 2012 Research In Motion Limited. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "core/events/TouchEvent.h"
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#include "core/events/EventDispatcher.h"
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#include "core/frame/FrameConsole.h"
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#include "core/frame/LocalFrame.h"
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#include "core/inspector/ConsoleMessage.h"
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namespace blink {
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TouchEvent::TouchEvent()
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{
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ScriptWrappable::init(this);
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}
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TouchEvent::TouchEvent(TouchList* touches, TouchList* targetTouches,
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TouchList* changedTouches, const AtomicString& type,
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PassRefPtrWillBeRawPtr<AbstractView> view,
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bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool cancelable)
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: UIEventWithKeyState(type, true, cancelable, view, 0,
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ctrlKey, altKey, shiftKey, metaKey)
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, m_touches(touches)
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, m_targetTouches(targetTouches)
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, m_changedTouches(changedTouches)
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{
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ScriptWrappable::init(this);
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}
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TouchEvent::~TouchEvent()
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{
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}
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void TouchEvent::initTouchEvent(TouchList* touches, TouchList* targetTouches,
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TouchList* changedTouches, const AtomicString& type,
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PassRefPtrWillBeRawPtr<AbstractView> view,
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int, int, int, int,
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bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
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{
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if (dispatched())
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return;
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bool cancelable = true;
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if (type == EventTypeNames::touchcancel)
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cancelable = false;
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initUIEvent(type, true, cancelable, view, 0);
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m_touches = touches;
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m_targetTouches = targetTouches;
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m_changedTouches = changedTouches;
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m_ctrlKey = ctrlKey;
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m_altKey = altKey;
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m_shiftKey = shiftKey;
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m_metaKey = metaKey;
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}
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const AtomicString& TouchEvent::interfaceName() const
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{
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return EventNames::TouchEvent;
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}
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bool TouchEvent::isTouchEvent() const
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{
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return true;
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}
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void TouchEvent::preventDefault()
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{
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UIEventWithKeyState::preventDefault();
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// A common developer error is to wait too long before attempting to stop
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// scrolling by consuming a touchmove event. Generate a warning if this
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// event is uncancelable.
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if (!cancelable() && view() && view()->frame()) {
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view()->frame()->console().addMessage(ConsoleMessage::create(JSMessageSource, WarningMessageLevel,
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"Ignored attempt to cancel a " + type() + " event with cancelable=false, for example because scrolling is in progress and cannot be interrupted."));
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}
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}
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void TouchEvent::trace(Visitor* visitor)
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{
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visitor->trace(m_touches);
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visitor->trace(m_targetTouches);
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visitor->trace(m_changedTouches);
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UIEventWithKeyState::trace(visitor);
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}
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PassRefPtrWillBeRawPtr<TouchEventDispatchMediator> TouchEventDispatchMediator::create(PassRefPtrWillBeRawPtr<TouchEvent> touchEvent)
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{
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return adoptRefWillBeNoop(new TouchEventDispatchMediator(touchEvent));
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}
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TouchEventDispatchMediator::TouchEventDispatchMediator(PassRefPtrWillBeRawPtr<TouchEvent> touchEvent)
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: EventDispatchMediator(touchEvent)
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{
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}
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TouchEvent* TouchEventDispatchMediator::event() const
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{
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return toTouchEvent(EventDispatchMediator::event());
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}
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bool TouchEventDispatchMediator::dispatchEvent(EventDispatcher* dispatcher) const
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{
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event()->eventPath().adjustForTouchEvent(dispatcher->node(), *event());
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return dispatcher->dispatch();
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}
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} // namespace blink
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