Splits SmoothGestureController from RenderWidgetHostImpl

content/browser/renderer_host/render_widget_host_impl.h

 // Copyright (c) 2012 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_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 50 matching lines @@
 }
 #endif
 
 namespace content {
 class BackingStore;
 class GestureEventFilter;
 class MockRenderWidgetHost;
 class OverscrollController;
 class RenderWidgetHostDelegate;
 class RenderWidgetHostViewPort;
-class SmoothScrollGesture;
+class SmoothScrollGestureController;
 class TouchEventQueue;
 struct EditCommand;
 
 // This implements the RenderWidgetHost interface that is exposed to
 // embedders of content, and adds things only visible to content.
 class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
                                             public IPC::Listener {
  public:
   // routing_id can be MSG_ROUTING_NONE, in which case the next available
   // routing id is taken from the RenderProcessHost.
@@ skipping 473 matching lines @@
                                          int32 route_id,
                                          const gfx::Size& size,
                                          int32 gpu_process_host_id);
   void OnSwapCompositorFrame(const cc::CompositorFrame& frame);
   void OnUpdateRect(const ViewHostMsg_UpdateRect_Params& params);
   void OnUpdateIsDelayed();
   void OnInputEventAck(WebKit::WebInputEvent::Type event_type,
                        InputEventAckState ack_result);
   void OnBeginSmoothScroll(
       int gesture_id,
-      const ViewHostMsg_BeginSmoothScroll_Params &params);
+      const ViewHostMsg_BeginSmoothScroll_Params& params);
   void OnSelectRangeAck();
   void OnMsgMoveCaretAck();
   virtual void OnFocus();
   virtual void OnBlur();
   void OnHasTouchEventHandlers(bool has_handlers);
   void OnSetCursor(const WebCursor& cursor);
   void OnTextInputStateChanged(
       const ViewHostMsg_TextInputState_Params& params);
   void OnImeCompositionRangeChanged(
       const ui::Range& range,
@@ skipping 89 matching lines @@
 
   // Called on OnInputEventAck() to process a touch event ack message.
   // This can result in a gesture event being generated and sent back to the
   // renderer.
   void ProcessTouchAck(InputEventAckState ack_result);
 
   // Called when there is a new auto resize (using a post to avoid a stack
   // which may get in recursive loops).
   void DelayedAutoResized();
 
-  // Called periodically to advance the active scroll gesture after being
-  // initiated by OnBeginSmoothScroll.
-  void TickActiveSmoothScrollGesture();
 
   // Our delegate, which wants to know mainly about keyboard events.
   // It will remain non-NULL until DetachDelegate() is called.
   RenderWidgetHostDelegate* delegate_;
 
   // Created during construction but initialized during Init*(). Therefore, it
   // is guaranteed never to be NULL, but its channel may be NULL if the
   // renderer crashed, so you must always check that.
   RenderProcessHost* process_;
 
@@ skipping 166 matching lines @@
   bool pending_mouse_lock_request_;
   bool allow_privileged_mouse_lock_;
 
   // Keeps track of whether the webpage has any touch event handler. If it does,
   // then touch events are sent to the renderer. Otherwise, the touch events are
   // not sent to the renderer.
   bool has_touch_handler_;
 
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
-  typedef std::map<int, scoped_refptr<SmoothScrollGesture> >
-      SmoothScrollGestureMap;
-  SmoothScrollGestureMap active_smooth_scroll_gestures_;
-  base::TimeTicks last_smooth_scroll_gestures_tick_time_;
-  bool tick_active_smooth_scroll_gestures_task_posted_;
-
+  scoped_ptr<SmoothScrollGestureController> smooth_scroll_gesture_controller_;

[rjkroege, 2013/02/11 22:47:27]

The SmoothScrollGestureController is a lot like an implementation of fling in
the browser. (Perhaps fling should move from renderer to browser someday?)

   scoped_ptr<TouchEventQueue> touch_event_queue_;
   scoped_ptr<GestureEventFilter> gesture_event_filter_;
   scoped_ptr<OverscrollController> overscroll_controller_;
 
 #if defined(OS_WIN)
   std::list<HWND> dummy_windows_for_activation_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_