Enable touch based selection and editing for webpages behind a flag.

content/browser/renderer_host/render_widget_host_view_aura.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_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/renderer_host/image_transport_factory.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/common/content_export.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/activation_change_observer.h"
 #include "ui/aura/client/activation_delegate.h"
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/root_window_observer.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/base/ime/text_input_client.h"
+#include "ui/base/touch/touch_editing_controller.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/compositor_observer.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/gfx/rect.h"
 #include "webkit/glue/webcursor.h"
 
 namespace aura {
 class WindowTracker;
 }
 
@@ skipping 17 matching lines @@
     : public RenderWidgetHostViewBase,
       public ui::CompositorObserver,
       public ui::TextInputClient,
       public gfx::DisplayObserver,
       public aura::RootWindowObserver,
       public aura::WindowDelegate,
       public aura::client::ActivationDelegate,
       public aura::client::ActivationChangeObserver,
       public aura::client::FocusChangeObserver,
       public ImageTransportFactoryObserver,
-      public base::SupportsWeakPtr<RenderWidgetHostViewAura> {
+      public base::SupportsWeakPtr<RenderWidgetHostViewAura>,
+      public ui::TouchEditable {
  public:
   // Used to notify whenever the paint-content of the view changes.
   class PaintObserver {
    public:
     PaintObserver() {}
     virtual ~PaintObserver() {}
 
     // This is called when painting of the page is completed.
     virtual void OnPaintComplete() = 0;
 
@@ skipping 57 matching lines @@
       const std::vector<gfx::Rect>& copy_rects) OVERRIDE;
   virtual void RenderViewGone(base::TerminationStatus status,
                               int error_code) OVERRIDE;
   virtual void Destroy() OVERRIDE;
   virtual void SetTooltipText(const string16& tooltip_text) OVERRIDE;
   virtual void SelectionChanged(const string16& text,
                                 size_t offset,
                                 const ui::Range& range) OVERRIDE;
   virtual void SelectionBoundsChanged(
       const ViewHostMsg_SelectionBounds_Params& params) OVERRIDE;
+  virtual void TouchEditingHandlesVisibilityChanged(bool visible) OVERRIDE;
   virtual void ScrollOffsetChanged() OVERRIDE;
   virtual BackingStore* AllocBackingStore(const gfx::Size& size) OVERRIDE;
   virtual void CopyFromCompositingSurface(
       const gfx::Rect& src_subrect,
       const gfx::Size& dst_size,
       const base::Callback<void(bool, const SkBitmap&)>& callback) OVERRIDE;
   virtual void CopyFromCompositingSurfaceToVideoFrame(
       const gfx::Rect& src_subrect,
       const scoped_refptr<media::VideoFrame>& target,
       const base::Callback<void(bool)>& callback) OVERRIDE;
@@ skipping 129 matching lines @@
   virtual void OnCompositingAborted(ui::Compositor* compositor) OVERRIDE;
   virtual void OnCompositingLockStateChanged(
       ui::Compositor* compositor) OVERRIDE;
   virtual void OnUpdateVSyncParameters(ui::Compositor* compositor,
                                        base::TimeTicks timebase,
                                        base::TimeDelta interval) OVERRIDE;
 
   // Overridden from ImageTransportFactoryObserver:
   virtual void OnLostResources() OVERRIDE;
 
+  // Overridden from ui::TouchEditable:

[piman, 2013/02/22 02:43:04]

I think all this should be a tear-off class.
RWVHA is growing and growing, but this looks like a part that's fairly easy to
separate.
Almost all of it could be done from the public API, or at least the Port API,
and so could be re-used across all ports implementations.

It would also fix the API naming conflict.

[varunjain, 2013/02/28 20:28:19]

Done.

+  virtual void SelectRect(const gfx::Point& start,
+                          const gfx::Point& end) OVERRIDE;
+  virtual void GetSelectionEndPoints(gfx::Rect* p1, gfx::Rect* p2) OVERRIDE;
+  virtual gfx::Rect GetBounds() OVERRIDE;
+  virtual gfx::NativeView GetNativeView() OVERRIDE;
+  virtual void ConvertPointToScreen(gfx::Point* point) OVERRIDE;
+  virtual void ConvertPointFromScreen(gfx::Point* point) OVERRIDE;
+  virtual bool DrawsHandles() OVERRIDE;
+  virtual void OpenContextMenu(const gfx::Point anchor) OVERRIDE;
+  virtual bool IsCommandIdChecked(int command_id) const OVERRIDE;
+  virtual bool IsCommandIdEnabled(int command_id) const OVERRIDE;
+  virtual bool GetAcceleratorForCommandId(
+      int command_id,
+      ui::Accelerator* accelerator) OVERRIDE;
+  virtual void ExecuteCommand(int command_id) OVERRIDE;
+
   virtual ~RenderWidgetHostViewAura();
 
   void UpdateCursorIfOverSelf();
   bool ShouldSkipFrame(const gfx::Size& size);
   void UpdateExternalTexture();
   ui::InputMethod* GetInputMethod() const;
 
   // Returns whether the widget needs an input grab to work properly.
   bool NeedsInputGrab();
 
@@ skipping 202 matching lines @@
     // No. We've got a frame, but it hasn't been committed.
     NO_PENDING_COMMIT,
   };
   CanLockCompositorState can_lock_compositor_;
 
   // An observer to notify that the paint content of the view has changed. The
   // observer is not owned by the view, and must remove itself as an oberver
   // when it is being destroyed.
   PaintObserver* paint_observer_;
 
+  scoped_ptr<ui::TouchSelectionController> touch_selection_controller_;
+
 #if defined(OS_WIN)
   scoped_ptr<TransientWindowObserver> transient_observer_;
 
   // The list of rectangles from transient and constrained windows over this
   // view. Windowed NPAPI plugins shouldn't draw over them.
   std::vector<gfx::Rect> transient_rects_;
   std::vector<gfx::Rect> constrained_rects_;
 
   typedef std::map<HWND, webkit::npapi::WebPluginGeometry> PluginWindowMoves;
   // Contains information about each windowed plugin's clip and cutout rects (
   // from the renderer). This is needed because when the transient windoiws
   // over this view changes, we need this information in order to create a new
   // region for the HWND.
   PluginWindowMoves plugin_window_moves_;
 #endif
 
   base::TimeTicks last_draw_ended_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_