| // 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_LAUNCHER_LAUNCHER_MODEL_OBSERVER_H_ |
| #define ASH_LAUNCHER_LAUNCHER_MODEL_OBSERVER_H_ |
| |
| #include "ash/ash_export.h" |
| #include "ash/launcher/launcher_types.h" |
| |
| namespace ash { |
| |
| struct LauncherItem; |
| |
| class ASH_EXPORT LauncherModelObserver { |
| public: |
| // Invoked after an item has been added to the model. |
| virtual void LauncherItemAdded(int index) = 0; |
| |
| // Invoked after an item has been removed. |index| is the index the item was |
| // at. |
| virtual void LauncherItemRemoved(int index, LauncherID id) = 0; |
| |
| // Invoked after an item has been moved. See LauncherModel::Move() for details |
| // of the arguments. |
| virtual void LauncherItemMoved(int start_index, int target_index) = 0; |
| |
| // Invoked when the state of an item changes. |old_item| is the item |
| // before the change. |
| virtual void LauncherItemChanged(int index, const LauncherItem& old_item) = 0; |
| |
| // Invoked when launcher status is changed. |
| virtual void LauncherStatusChanged() = 0; |
| |
| protected: |
| virtual ~LauncherModelObserver() {} |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_LAUNCHER_LAUNCHER_MODEL_OBSERVER_H_ |