Deprecating high-conflict accelerators

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>
 
@@ skipping 70 matching lines @@
 
   // Returns true if the |accelerator| is preferred. A preferred accelerator
   // is handled before being passed to an window/web contents, unless
   // the window is in fullscreen state.
   bool IsPreferred(const ui::Accelerator& accelerator) const;
 
   // Returns true if the |accelerator| is reserved. A reserved accelerator
   // is always handled and will never be passed to an window/web contents.
   bool IsReserved(const ui::Accelerator& accelerator) const;
 
+  // Returns true if the |accelerator| is deprecated. Deprecated accelerators
+  // can be consumed by web contents if needed.
+  bool IsDeprecated(const ui::Accelerator& accelerator) const;
+
   // Performs the specified action if it is enabled. Returns whether the action
   // was performed successfully.
   bool PerformActionIfEnabled(AcceleratorAction action);
 
   // Returns the restriction for the current context.
   AcceleratorProcessingRestriction GetCurrentAcceleratorRestriction();
 
   void SetBrightnessControlDelegate(
       scoped_ptr<BrightnessControlDelegate> brightness_control_delegate);
   void SetImeControlDelegate(
@@ skipping 25 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(AcceleratorControllerTest,
                            DontRepeatToggleFullscreen);
 
   // Initializes the accelerators this class handles as a target.
   void Init();
 
   // Registers the specified accelerators.
   void RegisterAccelerators(const AcceleratorData accelerators[],
                             size_t accelerators_length);
 
+  // Registers the deprecated and their replacing accelerators.
+  void RegisterDeprecatedAccelerators(
+      const DeprecatedAcceleratorData deprecated_accelerators[],
+      size_t length);
+
   // Returns whether |action| can be performed. The |accelerator| may provide
   // additional data the action needs.
   bool CanPerformAction(AcceleratorAction action,
                         const ui::Accelerator& accelerator);
 
   // Performs the specified action. The |accelerator| may provide additional
   // data the action needs.
   void PerformAction(AcceleratorAction action,
                      const ui::Accelerator& accelerator);
 
@@ skipping 23 matching lines @@
   scoped_ptr<ScreenshotDelegate> screenshot_delegate_;
 
   // Handles the exit accelerator which requires a double press to exit and
   // shows a popup with an explanation.
   ExitWarningHandler exit_warning_handler_;
 
   // A map from accelerators to the AcceleratorAction values, which are used in
   // the implementation.
   std::map<ui::Accelerator, AcceleratorAction> accelerators_;
 
+  std::map<AcceleratorAction, const DeprecatedAcceleratorData*>
+      actions_with_deprecations_;
+  std::set<ui::Accelerator> deprecated_accelerators_;
+
   // Actions allowed when the user is not signed in.
   std::set<int> actions_allowed_at_login_screen_;
   // Actions allowed when the screen is locked.
   std::set<int> actions_allowed_at_lock_screen_;
   // Actions allowed when a modal window is up.
   std::set<int> actions_allowed_at_modal_window_;
   // Preferred actions. See accelerator_table.h for details.
   std::set<int> preferred_actions_;
   // Reserved actions. See accelerator_table.h for details.
   std::set<int> reserved_actions_;
   // Actions which will not be repeated while holding the accelerator key.
   std::set<int> nonrepeatable_actions_;
   // Actions allowed in app mode.
   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_