1/* 2 * Copyright (C) 2014 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef ScrollingCoordinatorIOS_h 27#define ScrollingCoordinatorIOS_h 28 29#if ENABLE(ASYNC_SCROLLING) 30 31#include "AsyncScrollingCoordinator.h" 32 33namespace WebCore { 34 35class Scrollbar; 36class ScrollingStateNode; 37class ScrollingStateScrollingNode; 38class ScrollingStateTree; 39class ThreadedScrollingTree; 40 41class ScrollingCoordinatorIOS : public AsyncScrollingCoordinator { 42public: 43 explicit ScrollingCoordinatorIOS(Page*); 44 virtual ~ScrollingCoordinatorIOS(); 45 46 virtual void pageDestroyed(); 47 48 virtual void commitTreeStateIfNeeded() override; 49 50 // Handle the wheel event on the scrolling thread. Returns whether the event was handled or not. 51 virtual bool handleWheelEvent(FrameView*, const PlatformWheelEvent&) override { return false; } 52 53private: 54 virtual void scheduleTreeStateCommit() override; 55 56 void scrollingStateTreeCommitterTimerFired(Timer<ScrollingCoordinatorIOS>*); 57 void commitTreeState(); 58 59 Timer<ScrollingCoordinatorIOS> m_scrollingStateTreeCommitterTimer; 60}; 61 62} // namespace WebCore 63 64#endif // ENABLE(ASYNC_SCROLLING) 65 66#endif // ScrollingCoordinatorIOS_h 67