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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_RENDERER_INPUT_INPUT_HANDLER_MANAGER_H_
#define CONTENT_RENDERER_INPUT_INPUT_HANDLER_MANAGER_H_
#include "base/containers/scoped_ptr_hash_map.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "content/common/input/input_event_ack_state.h"
#include "content/renderer/render_view_impl.h"
namespace base {
class SingleThreadTaskRunner;
}
namespace cc {
class InputHandler;
struct InputHandlerScrollResult;
}
namespace blink {
class WebInputEvent;
class WebMouseWheelEvent;
}
namespace scheduler {
class RendererScheduler;
}
namespace content {
class InputHandlerWrapper;
class InputHandlerManagerClient;
struct DidOverscrollParams;
// InputHandlerManager class manages InputHandlerProxy instances for
// the WebViews in this renderer.
class InputHandlerManager {
public:
// |task_runner| is the SingleThreadTaskRunner of the compositor thread. The
// underlying MessageLoop and supplied |client| and the |renderer_scheduler|
// must outlive this object. The RendererScheduler needs to know when input
// events and fling animations occur, which is why it's passed in here.
InputHandlerManager(
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
InputHandlerManagerClient* client,
scheduler::RendererScheduler* renderer_scheduler);
virtual ~InputHandlerManager();
// Callable from the main thread only.
void AddInputHandler(int routing_id,
const base::WeakPtr<cc::InputHandler>& input_handler,
const base::WeakPtr<RenderViewImpl>& render_view_impl,
bool enable_smooth_scrolling,
bool enable_wheel_gestures);
void ObserveWheelEventAndResultOnMainThread(
int routing_id,
const blink::WebMouseWheelEvent& wheel_event,
const cc::InputHandlerScrollResult& scroll_result);
void NonBlockingInputEventHandledOnMainThread(int routing_id,
blink::WebInputEvent::Type);
// Callback only from the compositor's thread.
void RemoveInputHandler(int routing_id);
// Called from the compositor's thread.
virtual InputEventAckState HandleInputEvent(
int routing_id,
const blink::WebInputEvent* input_event,
ui::LatencyInfo* latency_info);
// Called from the compositor's thread.
void DidOverscroll(int routing_id, const DidOverscrollParams& params);
// Called from the compositor's thread.
void DidStopFlinging(int routing_id);
// Called from the compositor's thread.
void DidAnimateForInput();
private:
// Called from the compositor's thread.
void AddInputHandlerOnCompositorThread(
int routing_id,
const scoped_refptr<base::SingleThreadTaskRunner>& main_task_runner,
const base::WeakPtr<cc::InputHandler>& input_handler,
const base::WeakPtr<RenderViewImpl>& render_view_impl,
bool enable_smooth_scrolling,
bool enable_wheel_gestures);
void ObserveWheelEventAndResultOnCompositorThread(
int routing_id,
const blink::WebMouseWheelEvent& wheel_event,
const cc::InputHandlerScrollResult& scroll_result);
void NonBlockingInputEventHandledOnCompositorThread(
int routing_id,
blink::WebInputEvent::Type);
typedef base::ScopedPtrHashMap<int, // routing_id
scoped_ptr<InputHandlerWrapper>>
InputHandlerMap;
InputHandlerMap input_handlers_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
InputHandlerManagerClient* client_;
scheduler::RendererScheduler* renderer_scheduler_; // Not owned.
};
} // namespace content
#endif // CONTENT_RENDERER_INPUT_INPUT_HANDLER_MANAGER_H_
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