ESC accelerator and consistent overview mode for Athena homecard

athena/home/home_card_impl.h

 // Copyright 2014 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 ATHENA_HOME_HOME_CARD_IMPL_H_
 #define ATHENA_HOME_HOME_CARD_IMPL_H_
 
 #include "athena/athena_export.h"
 #include "athena/home/home_card_gesture_manager.h"
 #include "athena/home/public/home_card.h"
@@ skipping 43 matching lines @@
 
   void Init();
 
   aura::Window* GetHomeCardWindowForTest() const;
 
  private:
   enum Command {
     COMMAND_SHOW_HOME_CARD,
   };
   void InstallAccelerators();
+  void SetStateAndOverview(HomeCard::State state);
 
   // Overridden from HomeCard:
   virtual void SetState(HomeCard::State state) OVERRIDE;
   virtual State GetState() OVERRIDE;
   virtual void RegisterSearchProvider(
       app_list::SearchProvider* search_provider) OVERRIDE;
   virtual void UpdateVirtualKeyboardBounds(
       const gfx::Rect& bounds) OVERRIDE;
 
   // AcceleratorHandler:
@@ skipping 19 matching lines @@
   virtual void OnWindowActivated(aura::Window* gained_active,
                                  aura::Window* lost_active) OVERRIDE;
 
   scoped_ptr<AppModelBuilder> model_builder_;
 
   HomeCard::State state_;
 
   // original_state_ is the state which the home card should go back to after
   // the virtual keyboard is hidden.
   HomeCard::State original_state_;
+  // state to set when overview mode enters or exits
+  HomeCard::State overview_state_;
 
   views::Widget* home_card_widget_;
   HomeCardView* home_card_view_;
   scoped_ptr<AppListViewDelegate> view_delegate_;
   HomeCardLayoutManager* layout_manager_;
   aura::client::ActivationClient* activation_client_;  // Not owned
   scoped_ptr<ui::LayerOwner> minimized_home_;
 
   // Right now HomeCard allows only one search provider.
   // TODO(mukai): port app-list's SearchController and Mixer.
   scoped_ptr<app_list::SearchProvider> search_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(HomeCardImpl);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_HOME_HOME_CARD_IMPL_H_