/* * Copyright (C) 2011 Google 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 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 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 WebCompositorInputHandlerClient_h #define WebCompositorInputHandlerClient_h namespace WebKit { struct WebActiveWheelFlingParameters; class WebCompositorInputHandlerClient { public: // Callbacks invoked from the compositor thread. virtual void willShutdown() = 0; // Exactly one of the following two callbacks will be invoked after every call to WebCompositor::handleInputEvent(): // Called when the WebCompositor handled the input event and no further processing is required. virtual void didHandleInputEvent() = 0; // Called when the WebCompositor did not handle the input event. If sendToWidget is true, the input event // should be forwarded to the WebWidget associated with this compositor for further processing. virtual void didNotHandleInputEvent(bool sendToWidget) = 0; // Transfers an active wheel fling animation initiated by a previously handled input event out to the client. // FIXME: Make pure virtual once implementation lands on Chromium side. virtual void transferActiveWheelFlingAnimation(const WebActiveWheelFlingParameters&) { } protected: virtual ~WebCompositorInputHandlerClient() { } }; } // namespace WebKit #endif