Remove the BufferedInputRouter

content/browser/renderer_host/input/buffered_input_router.h

-// 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_BROWSER_INPUT_RENDERER_HOST_BUFFERED_INPUT_ROUTER_H_
-#define CONTENT_BROWSER_INPUT_RENDERER_HOST_BUFFERED_INPUT_ROUTER_H_
-
-#include <map>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/scoped_vector.h"
-#include "content/browser/renderer_host/input/browser_input_event.h"
-#include "content/browser/renderer_host/input/input_queue.h"
-#include "content/browser/renderer_host/input/input_queue_client.h"
-#include "content/browser/renderer_host/input/input_router.h"
-
-namespace IPC {
-class Sender;
-}
-
-namespace content {
-
-class InputAckHandler;
-class RenderProcessHost;
-class RenderWidgetHostImpl;
-
-// Batches input events into EventPackets using a general input queue. Packets
-// are sent the renderer on |Flush()|, called in response to flush requests.
-class CONTENT_EXPORT BufferedInputRouter
-    : public NON_EXPORTED_BASE(BrowserInputEventClient),
-      public NON_EXPORTED_BASE(InputQueueClient),
-      public NON_EXPORTED_BASE(InputRouter) {
- public:
-  // |sender|, |client| and |ack_handler| must outlive the BufferedInputRouter.
-  BufferedInputRouter(IPC::Sender* sender,
-                      InputRouterClient* client,
-                      InputAckHandler* ack_handler,
-                      int routing_id);
-  virtual ~BufferedInputRouter();
-
-  // InputRouter
-  virtual void Flush() OVERRIDE;
-  virtual bool SendInput(scoped_ptr<IPC::Message> message) OVERRIDE;
-
-  // Certain unhandled input event acks may create follow-up events, e.g.,
-  // TouchEvent -> GestureEvent.  If these follow-up events are sent to the
-  // router synchronously from the original event's |OnDispatched()| ack, they
-  // will be inserted into the current input flush stream.
-  virtual void SendMouseEvent(
-      const MouseEventWithLatencyInfo& mouse_event) OVERRIDE;
-  virtual void SendWheelEvent(
-      const MouseWheelEventWithLatencyInfo& wheel_event) OVERRIDE;
-  virtual void SendKeyboardEvent(const NativeWebKeyboardEvent& key_event,
-                                 const ui::LatencyInfo& latency_info) OVERRIDE;
-  virtual void SendGestureEvent(
-      const GestureEventWithLatencyInfo& gesture_event) OVERRIDE;
-  virtual void SendTouchEvent(
-      const TouchEventWithLatencyInfo& touch_event) OVERRIDE;
-  virtual void SendMouseEventImmediately(
-      const MouseEventWithLatencyInfo& mouse_event) OVERRIDE;
-  virtual void SendTouchEventImmediately(
-      const TouchEventWithLatencyInfo& touch_event) OVERRIDE;
-  virtual void SendGestureEventImmediately(
-      const GestureEventWithLatencyInfo& gesture_event) OVERRIDE;
-  virtual const NativeWebKeyboardEvent* GetLastKeyboardEvent() const OVERRIDE;
-  virtual bool ShouldForwardTouchEvent() const OVERRIDE;
-  virtual bool ShouldForwardGestureEvent(
-      const GestureEventWithLatencyInfo& gesture_event) const OVERRIDE;
-
-  // InputQueueClient
-  virtual void Deliver(const EventPacket& packet) OVERRIDE;
-  virtual void DidFinishFlush() OVERRIDE;
-  virtual void SetNeedsFlush() OVERRIDE;
-
-  // BrowserInputEventClient
-  virtual void OnDispatched(const BrowserInputEvent& event,
-                            InputEventDisposition disposition) OVERRIDE;
-  // Events delivered to the router within the scope of
-  // |OnDispatched()| will be added to |followup|.
-  virtual void OnDispatched(const BrowserInputEvent& event,
-                            InputEventDisposition disposition,
-                            ScopedVector<BrowserInputEvent>* followup) OVERRIDE;
-
-  // IPC::Receiver
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-
- protected:
-  void OnWebInputEventAck(int64 event_id,
-                          const WebKit::WebInputEvent& web_event,
-                          const ui::LatencyInfo& latency_info,
-                          InputEventAckState acked_result,
-                          bool ack_from_input_queue);
-  void OnEventPacketAck(int64 packet_id,
-                        const InputEventDispositions& dispositions);
-  void OnHasTouchEventHandlers(bool has_handlers);
-
-  // Returns the non-zero ID associated with the |InputEvent| added to the
-  // |input_queue_|. If the event was dropped or filtered, returns 0.
-  int64 QueueWebEvent(const WebKit::WebInputEvent& web_event,
-                      const ui::LatencyInfo& latency_info,
-                      bool is_key_shortcut);
-  // Used by |QueueWebEvent()|; returns true if an event was filtered and should
-  // not be added to the |input_queue_|.
-  bool FilterWebEvent(const WebKit::WebInputEvent& web_event,
-                      const ui::LatencyInfo& latency_info);
-
-  // Generates a monotonically increasing sequences of id's, starting with 1.
-  int64 NextInputID();
-
-  const InputQueue* input_queue() const { return input_queue_.get(); }
-
- private:
-  InputRouterClient* client_;
-  InputAckHandler* ack_handler_;
-  IPC::Sender* sender_;
-  int routing_id_;
-
-  scoped_ptr<InputQueue> input_queue_;
-
-  // TODO(jdduke): Remove when we can properly serialize NativeWebKeyboardEvent.
-  // Alternatively, attach WebInputEvents to InputEvents but don't serialize.
-  typedef std::map<int64, NativeWebKeyboardEvent> KeyMap;
-  KeyMap queued_key_map_;
-
-  // Necessary for |ShouldForwardTouchEvent()|.
-  bool has_touch_handler_;
-  int queued_touch_count_;
-
-  // This is non-NULL ONLY in the scope of OnInputEventAck(event, injector).
-  ScopedVector<BrowserInputEvent>* input_queue_override_;
-
-  // Used to assign unique ID's to each InputEvent that is generated.
-  int64 next_input_id_;
-
-  // 0 if there no in-flight EventPacket.
-  int64 in_flight_packet_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(BufferedInputRouter);
-};
-
-} // namespace content
-
-#endif // CONTENT_BROWSER_INPUT_RENDERER_HOST_BUFFERED_INPUT_ROUTER_H_