Implement touch selection menu.

views/touchui/touch_selection_controller_impl.h

Index: views/touchui/touch_selection_controller_impl.h
diff --git a/views/touchui/touch_selection_controller_impl.h b/views/touchui/touch_selection_controller_impl.h
index 00ade4103c9f8dc752cbdc9001e3795a1f8b8473..42f33fa673a6276d9de6d5f6c6c4808208baf241 100644
--- a/views/touchui/touch_selection_controller_impl.h
+++ b/views/touchui/touch_selection_controller_impl.h
@@ -6,6 +6,7 @@
 #define VIEWS_TOUCHUI_TOUCH_SELECTION_CONTROLLER_IMPL_H_
 #pragma once
 
+#include "base/timer.h"
 #include "ui/gfx/point.h"
 #include "views/touchui/touch_selection_controller.h"
 #include "views/view.h"
@@ -30,6 +31,7 @@ class TouchSelectionControllerImpl : public TouchSelectionController {
  private:
   friend class TouchSelectionControllerImplTest;
   class SelectionHandleView;
+  class TouchContextMenuView;
 
   // Callback to inform the client view that the selection handle has been
   // dragged, hence selection may need to be updated.
@@ -39,6 +41,21 @@ class TouchSelectionControllerImpl : public TouchSelectionController {
   // system to that of the client view.
   void ConvertPointToClientView(SelectionHandleView* source, gfx::Point* point);
 
+  // Checks if the client view supports a context menu command.
+  bool IsCommandIdEnabled(int command_id) const;
+
+  // Sends a context menu command to the client view.
+  void ExecuteCommand(int command_id);
+
+  // Time to show context menu.
+  void ContextMenuTimerFired();
+
+  // Convenience method to update the position/visibility of the context menu.
+  void UpdateContextMenu(const gfx::Point& p1, const gfx::Point& p2);
+
+  // Convenience method for hiding context menu.
+  void HideContextMenu();
+
   // Convenience methods for testing.
   gfx::Point GetSelectionHandle1Position();
   gfx::Point GetSelectionHandle2Position();
@@ -48,6 +65,12 @@ class TouchSelectionControllerImpl : public TouchSelectionController {
   TouchSelectionClientView* client_view_;
   scoped_ptr<SelectionHandleView> selection_handle_1_;
   scoped_ptr<SelectionHandleView> selection_handle_2_;
+  scoped_ptr<TouchContextMenuView> context_menu_;
+
+  // Timer to trigger |context_menu| (|context_menu| is not shown if the
+  // selection handles are being updated. It appears only when the handles are
+  // stationary for a certain amount of time).
+  base::OneShotTimer<TouchSelectionControllerImpl> context_menu_timer_;
 
   // Pointer to the SelectionHandleView being dragged during a drag session.
   SelectionHandleView* dragging_handle_;