1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CONTENT_RENDERER_GPU_INPUT_HANDLER_MANAGER_CLIENT_H_ 6#define CONTENT_RENDERER_GPU_INPUT_HANDLER_MANAGER_CLIENT_H_ 7 8#include "base/basictypes.h" 9#include "base/callback.h" 10#include "base/callback_forward.h" 11#include "content/common/content_export.h" 12#include "ui/gfx/vector2d_f.h" 13 14namespace ui { 15struct LatencyInfo; 16} 17 18namespace cc { 19class InputHandler; 20struct DidOverscrollParams; 21} 22 23namespace WebKit { 24class WebInputEvent; 25} 26 27namespace content { 28 29class CONTENT_EXPORT InputHandlerManagerClient { 30 public: 31 virtual ~InputHandlerManagerClient() {} 32 33 // The Manager will supply a |handler| when bound to the client. This is valid 34 // until the manager shuts down, at which point it supplies a null |handler|. 35 // The client should only makes calls to |handler| on the compositor thread. 36 typedef base::Callback< 37 InputEventAckState(int /*routing_id*/, 38 const WebKit::WebInputEvent*, 39 const ui::LatencyInfo& latency_info)> Handler; 40 41 // Called from the main thread. 42 virtual void SetBoundHandler(const Handler& handler) = 0; 43 44 // Called from the compositor thread. 45 virtual void DidAddInputHandler(int routing_id, 46 cc::InputHandler* input_handler) = 0; 47 virtual void DidRemoveInputHandler(int routing_id) = 0; 48 virtual void DidOverscroll(int routing_id, 49 const cc::DidOverscrollParams& params) = 0; 50 51 protected: 52 InputHandlerManagerClient() {} 53 54 private: 55 DISALLOW_COPY_AND_ASSIGN(InputHandlerManagerClient); 56}; 57 58} // namespace content 59 60#endif // CONTENT_COMMON_GPU_INPUT_HANDLER_MANAGER_CLIENT_H_ 61