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/*
* Copyright (C) 2011, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef EventDispatcher_h
#define EventDispatcher_h
#include "Connection.h"
#include "WebEvent.h"
#include <WebCore/WheelEventDeltaFilter.h>
#include <memory>
#include <wtf/HashMap.h>
#include <wtf/Lock.h>
#include <wtf/Noncopyable.h>
#include <wtf/RefPtr.h>
#include <wtf/ThreadingPrimitives.h>
#if ENABLE(MAC_GESTURE_EVENTS)
#include "WebGestureEvent.h"
#endif
namespace WebCore {
class ThreadedScrollingTree;
}
namespace WebKit {
class WebEvent;
class WebPage;
class WebWheelEvent;
class EventDispatcher : public IPC::Connection::WorkQueueMessageReceiver {
public:
static Ref<EventDispatcher> create();
~EventDispatcher();
#if ENABLE(ASYNC_SCROLLING)
void addScrollingTreeForPage(WebPage*);
void removeScrollingTreeForPage(WebPage*);
#endif
#if ENABLE(IOS_TOUCH_EVENTS)
typedef Vector<WebTouchEvent, 1> TouchEventQueue;
void clearQueuedTouchEventsForPage(const WebPage&);
void getQueuedTouchEventsForPage(const WebPage&, TouchEventQueue&);
#endif
void initializeConnection(IPC::Connection*);
private:
EventDispatcher();
// IPC::Connection::WorkQueueMessageReceiver.
virtual void didReceiveMessage(IPC::Connection&, IPC::MessageDecoder&) override;
// Message handlers
void wheelEvent(uint64_t pageID, const WebWheelEvent&, bool canRubberBandAtLeft, bool canRubberBandAtRight, bool canRubberBandAtTop, bool canRubberBandAtBottom);
#if ENABLE(IOS_TOUCH_EVENTS)
void touchEvent(uint64_t pageID, const WebTouchEvent&);
#endif
#if ENABLE(MAC_GESTURE_EVENTS) || ENABLE(QT_GESTURE_EVENTS)
void gestureEvent(uint64_t pageID, const WebGestureEvent&);
#endif
// This is called on the main thread.
void dispatchWheelEvent(uint64_t pageID, const WebWheelEvent&);
#if ENABLE(IOS_TOUCH_EVENTS)
void dispatchTouchEvents();
#endif
#if ENABLE(MAC_GESTURE_EVENTS) || ENABLE(QT_GESTURE_EVENTS)
void dispatchGestureEvent(uint64_t pageID, const WebGestureEvent&);
#endif
#if ENABLE(ASYNC_SCROLLING)
void sendDidReceiveEvent(uint64_t pageID, const WebEvent&, bool didHandleEvent);
#endif
Ref<WorkQueue> m_queue;
#if ENABLE(ASYNC_SCROLLING)
Lock m_scrollingTreesMutex;
HashMap<uint64_t, RefPtr<WebCore::ThreadedScrollingTree>> m_scrollingTrees;
#endif
std::unique_ptr<WebCore::WheelEventDeltaFilter> m_recentWheelEventDeltaFilter;
#if ENABLE(IOS_TOUCH_EVENTS)
Lock m_touchEventsLock;
HashMap<uint64_t, TouchEventQueue> m_touchEvents;
#endif
};
} // namespace WebKit
#endif // EventDispatcher_h
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