Add key based scrolling on magnified screen for kiosk mode.

ash/accelerators/accelerator_controller.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_ACCELERATORS_ACCELERATOR_CONTROLLER_H_
 #define ASH_ACCELERATORS_ACCELERATOR_CONTROLLER_H_
 
 #include <map>
 #include <set>
 
+#include "ash/accelerators/accelerator_table.h"
 #include "ash/accelerators/exit_warning_handler.h"
 #include "ash/ash_export.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/base/accelerators/accelerator.h"
 
 namespace ui {
 class AcceleratorManager;
 }
 
 namespace ash {
 
-struct AcceleratorData;
 class BrightnessControlDelegate;
 class ExitWarningHandler;
 class ImeControlDelegate;
 class KeyboardBrightnessControlDelegate;
 class ScreenshotDelegate;
 class VolumeControlDelegate;
 
 // Stores information about accelerator context, eg. previous accelerator
 // or if the current accelerator is repeated or not.
 class ASH_EXPORT AcceleratorControllerContext {
@@ skipping 22 matching lines @@
 };
 
 // AcceleratorController provides functions for registering or unregistering
 // global keyboard accelerators, which are handled earlier than any windows. It
 // also implements several handlers as an accelerator target.
 class ASH_EXPORT AcceleratorController : public ui::AcceleratorTarget {
  public:
   AcceleratorController();
   virtual ~AcceleratorController();
 
+  // Installs/Uninstalls accelerators for the magnified screen.
+  void InstallMagnifierAccelerators();
+  void UninstallMagnifierAccelerators();
+
   // Registers a global keyboard accelerator for the specified target. If
   // multiple targets are registered for an accelerator, a target registered
   // later has higher priority.
   void Register(const ui::Accelerator& accelerator,
                 ui::AcceleratorTarget* target);
 
   // Unregisters the specified keyboard accelerator for the specified target.
   void Unregister(const ui::Accelerator& accelerator,
                   ui::AcceleratorTarget* target);
 
@@ skipping 46 matching lines @@
   ExitWarningHandler* GetExitWarningHandlerForTest() {
     return &exit_warning_handler_;
   }
 
  private:
   FRIEND_TEST_ALL_PREFIXES(AcceleratorControllerTest, GlobalAccelerators);
 
   // Initializes the accelerators this class handles as a target.
   void Init();
 
-  // Registers the specified accelerators.
+  // Registers/Unregisters the specified accelerators.
   void RegisterAccelerators(const AcceleratorData accelerators[],
                             size_t accelerators_length);
+  void UnregisterAccelerators(const AcceleratorData accelerators[],
+                              size_t accelerators_length);
+
+  void AddReservedAction(AcceleratorAction action);
+  void RemoveReservedAction(AcceleratorAction action);
 
   void SetKeyboardBrightnessControlDelegate(
       scoped_ptr<KeyboardBrightnessControlDelegate>
       keyboard_brightness_control_delegate);
 
   scoped_ptr<ui::AcceleratorManager> accelerator_manager_;
 
   // TODO(derat): BrightnessControlDelegate is also used by the system tray;
   // move it outside of this class.
   scoped_ptr<BrightnessControlDelegate> brightness_control_delegate_;
@@ skipping 27 matching lines @@
   std::set<int> actions_allowed_in_app_mode_;
   // Actions disallowed if there are no windows.
   std::set<int> actions_needing_window_;
 
   DISALLOW_COPY_AND_ASSIGN(AcceleratorController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_ACCELERATORS_ACCELERATOR_CONTROLLER_H_