Allow focus to be sent between browser window and launcher/status window

ash/shell.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 ASH_SHELL_H_
 #define ASH_SHELL_H_
 #pragma once
 
 #include <utility>
 #include <vector>
@@ skipping 29 matching lines @@
 class PowerButtonController;
 class ShellDelegate;
 class VideoDetector;
 class WindowCycleController;
 
 namespace internal {
 class ActivationController;
 class AcceleratorFilter;
 class AppList;
 class DragDropController;
+class FocusCycler;
 class InputMethodEventFilter;
 class RootWindowLayoutManager;
 class ShadowController;
 class StackingController;
 class TooltipController;
 class VisibilityController;
 class WindowModalityController;
 class WorkspaceController;
 }
 
 // Shell is a singleton object that presents the Shell API and implements the
 // RootWindow's delegate interface.
 //
 // Upon creation, the Shell sets itself as the RootWindow's delegate, which
 // takes ownership of the Shell.
 class ASH_EXPORT Shell {
  public:
   // In compact window mode we fill the screen with a single maximized window,
   // similar to ChromeOS R17 and earlier.  In overlapping mode we have draggable
   // windows.  In managed mode the workspace arranges windows for the user.
   enum WindowMode {
     MODE_COMPACT,
     MODE_MANAGED,
     MODE_OVERLAPPING,
   };
 
+  enum Direction {
+    FORWARD,
+    BACKWARD
+  };
+
   // A shell must be explicitly created so that it can call |Init()| with the
   // delegate set. |delegate| can be NULL (if not required for initialization).
   static Shell* CreateInstance(ShellDelegate* delegate);
 
   // Should never be called before |CreateInstance()|.
   static Shell* GetInstance();
 
   static void DeleteInstance();
 
   aura::Window* GetContainer(int container_id);
@@ skipping 22 matching lines @@
   bool IsModalWindowOpen() const;
 
   // See enum WindowMode for details.
   bool IsWindowModeCompact() const { return window_mode_ == MODE_COMPACT; }
 
   // Creates a default views::NonClientFrameView for use by windows in the
   // Ash environment.
   views::NonClientFrameView* CreateDefaultNonClientFrameView(
       views::Widget* widget);
 
+  // Rotate focus through containers that can recieve focus.
+  void RotateFocus(Direction direction);
+
   AcceleratorController* accelerator_controller() {
     return accelerator_controller_.get();
   }
   internal::TooltipController* tooltip_controller() {
     return tooltip_controller_.get();
   }
   PowerButtonController* power_button_controller() {
     return power_button_controller_.get();
   }
   VideoDetector* video_detector() {
@@ skipping 55 matching lines @@
   scoped_ptr<internal::ActivationController> activation_controller_;
   scoped_ptr<internal::WindowModalityController> window_modality_controller_;
   scoped_ptr<internal::DragDropController> drag_drop_controller_;
   scoped_ptr<internal::WorkspaceController> workspace_controller_;
   scoped_ptr<internal::ShadowController> shadow_controller_;
   scoped_ptr<internal::TooltipController> tooltip_controller_;
   scoped_ptr<internal::VisibilityController> visibility_controller_;
   scoped_ptr<PowerButtonController> power_button_controller_;
   scoped_ptr<VideoDetector> video_detector_;
   scoped_ptr<WindowCycleController> window_cycle_controller_;
+  scoped_ptr<internal::FocusCycler> focus_cycler_;
 
   // An event filter that pre-handles all key events to send them to an IME.
   scoped_ptr<internal::InputMethodEventFilter> input_method_filter_;
   // An event filter that pre-handles global accelerators.
   scoped_ptr<internal::AcceleratorFilter> accelerator_filter_;
 
   // Can change at runtime.
   WindowMode window_mode_;
 
   // Owned by aura::RootWindow, cached here for type safety.
   internal::RootWindowLayoutManager* root_window_layout_;
 
   // Status area with clock, Wi-Fi signal, etc.
   views::Widget* status_widget_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_