Add action for each button on opt-in IME menu.

ash/common/system/chromeos/ime_menu/ime_menu_tray.h

 // Copyright 2016 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 ASH_COMMON_SYSTEM_CHROMEOS_IME_MENU_IME_MENU_TRAY_H_
 #define ASH_COMMON_SYSTEM_CHROMEOS_IME_MENU_IME_MENU_TRAY_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/system/ime/ime_observer.h"
 #include "ash/common/system/tray/ime_info.h"
 #include "ash/common/system/tray/tray_background_view.h"
 #include "ash/common/system/tray/tray_bubble_wrapper.h"
 #include "base/macros.h"
+#include "ui/keyboard/keyboard_controller_observer.h"
 #include "ui/views/bubble/tray_bubble_view.h"
 
 namespace views {
 class Label;
 }  // namespace views
 
 namespace ash {
 class ImeListView;
 class StatusAreaWidget;
 class WmWindow;
 
 // The tray item for IME menu, which shows the detailed view of a null single
 // item.
 class ASH_EXPORT ImeMenuTray : public TrayBackgroundView,
                                public IMEObserver,
-                               public views::TrayBubbleView::Delegate {
+                               public views::TrayBubbleView::Delegate,
+                               public keyboard::KeyboardControllerObserver {
  public:
   explicit ImeMenuTray(WmShelf* wm_shelf);
   ~ImeMenuTray() override;
 
   // Shows the IME menu bubble and highlights the button.
   void ShowImeMenuBubble();
 
+  // Hides the IME menu bubble and lowlights the button.
+  void HideImeMenuBubble();
+
   // Returns true if the IME menu bubble has been shown.
   bool IsImeMenuBubbleShown();
 
+  // Shows the virtual keyboard with the given keyset: emoji, handwriting or
+  // voice.
+  void ShowKeyboardWithKeyset(const std::string& keyset);
+
   // TrayBackgroundView:
   void SetShelfAlignment(ShelfAlignment alignment) override;
   base::string16 GetAccessibleNameForTray() override;
   void HideBubbleWithView(const views::TrayBubbleView* bubble_view) override;
   void ClickedOutsideBubble() override;
   bool PerformAction(const ui::Event& event) override;
 
   // IMEObserver:
   void OnIMERefresh() override;
   void OnIMEMenuActivationChanged(bool is_activated) override;
 
   // views::TrayBubbleView::Delegate:
   void BubbleViewDestroyed() override;
   void OnMouseEnteredView() override;
   void OnMouseExitedView() override;
   base::string16 GetAccessibleNameForBubble() override;
   gfx::Rect GetAnchorRect(views::Widget* anchor_widget,
                           AnchorType anchor_type,
                           AnchorAlignment anchor_alignment) const override;
   void OnBeforeBubbleWidgetInit(
       views::Widget* anchor_widget,
       views::Widget* bubble_widget,
       views::Widget::InitParams* params) const override;
   void HideBubble(const views::TrayBubbleView* bubble_view) override;
 
+  // keyboard::KeyboardControllerObserver:
+  void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) override;
+  void OnKeyboardClosed() override;
+  void OnKeyboardHidden() override;
+
  private:
   // To allow the test class to access |label_|.
   friend class ImeMenuTrayTest;
 
   // Updates the text of the label on the tray.
   void UpdateTrayLabel();
 
-  // Hides the IME menu bubble and lowlights the button.
-  void HideImeMenuBubble();
-
   // Bubble for default and detailed views.
   std::unique_ptr<TrayBubbleWrapper> bubble_;
   ImeListView* ime_list_view_;
 
   views::Label* label_;
   IMEInfo current_ime_;
+  bool show_keyboard_;
+  bool force_show_keyboard_;
 
   DISALLOW_COPY_AND_ASSIGN(ImeMenuTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_SYSTEM_CHROMEOS_IME_MENU_IME_MENU_TRAY_H_