Mode Indicator using BubbleDelegateView.

chrome/browser/chromeos/input_method/mode_indicator_controller.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 CHROME_BROWSER_CHROMEOS_INPUT_METHOD_MODE_INDICATOR_CONTROLLER_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_MODE_INDICATOR_CONTROLLER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "chromeos/ime/input_method_manager.h"
-
-namespace gfx {
-class Rect;
-}  // namespace gfx
+#include "ui/gfx/rect.h"
 
 namespace chromeos {
 namespace input_method {
 
-class ModeIndicatorWidget;
+class ModeIndicatorObserver;
 
-// ModeIndicatorController is the controller of ModeIndicatiorWidget on the
-// MVC model.
+// ModeIndicatorController is the controller of ModeIndicatiorDelegateView
+// on the MVC model.
 class ModeIndicatorController
     : public InputMethodManager::Observer {
  public:
   // This class takes the ownership of |mi_widget|.
-  explicit ModeIndicatorController(ModeIndicatorWidget* mi_widget);
+  explicit ModeIndicatorController(InputMethodManager* imm);
   virtual ~ModeIndicatorController();
 
   // Set cursor bounds, which is the base point to display this indicator.
   // Bacisally this indicator is displayed underneath the cursor.
   void SetCursorBounds(const gfx::Rect& cursor_location);
 
   // Notify the focus state to the mode indicator.
   void FocusStateChanged(bool is_focused);
 
  private:
   // InputMethodManager::Observer implementation.
   virtual void InputMethodChanged(InputMethodManager* manager,
                                   bool show_message) OVERRIDE;
   virtual void InputMethodPropertyChanged(InputMethodManager* manager) OVERRIDE;
 
   // Show the mode inidicator with the current ime's short name if all
   // the conditions are cleared.
-  void ShowModeIndicator(InputMethodManager* manager);
+  void ShowModeIndicator();
 
-  scoped_ptr<ModeIndicatorWidget> mi_widget_;
+  InputMethodManager* imm_;
+
+  // Cursor bounds representing the anchor rect of the mode indicator.
+  gfx::Rect cursor_bounds_;
 
   // True on a text field is focused.
   bool is_focused_;
 
+  // Observer of the widgets created by BubbleDelegateView.  This is used to
+  // close the previous widget when a new widget is created.
+  scoped_ptr<ModeIndicatorObserver> mi_observer_;
+
   DISALLOW_COPY_AND_ASSIGN(ModeIndicatorController);
 };
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_MODE_INDICATOR_CONTROLLER_H_