| // Copyright 2018 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_ASH_APP_LIST_APP_LIST_MODEL_UPDATER_OBSERVER_H_ |
| #define CHROME_BROWSER_ASH_APP_LIST_APP_LIST_MODEL_UPDATER_OBSERVER_H_ |
| |
| #include "base/observer_list_types.h" |
| |
| class ChromeAppListItem; |
| |
| namespace ash { |
| enum class AppListSortOrder; |
| } |
| |
| // An observer interface for AppListModelUpdater to perform additional work on |
| // ChromeAppListItem changes. |
| class AppListModelUpdaterObserver : public base::CheckedObserver { |
| public: |
| // Triggered after an item has been added to the model. |
| virtual void OnAppListItemAdded(ChromeAppListItem* item) {} |
| |
| // Triggered just before an item is deleted from the model. |
| virtual void OnAppListItemWillBeDeleted(ChromeAppListItem* item) {} |
| |
| // Triggered after an item has moved, changed folders, or changed properties. |
| virtual void OnAppListItemUpdated(ChromeAppListItem* item) {} |
| }; |
| |
| #endif // CHROME_BROWSER_ASH_APP_LIST_APP_LIST_MODEL_UPDATER_OBSERVER_H_ |