1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef UI_APP_LIST_APP_LIST_ITEM_LIST_OBSERVER_H_
6 #define UI_APP_LIST_APP_LIST_ITEM_LIST_OBSERVER_H_
8 #include "base/basictypes.h"
12 class AppListItemModel;
14 class APP_LIST_EXPORT AppListItemListObserver {
16 // Triggered after |item| has been added to the list at |index|.
17 virtual void OnListItemAdded(size_t index, AppListItemModel* item) {}
19 // Triggered after an item has been removed from the list at |index|, just
20 // before the item is deleted.
21 virtual void OnListItemRemoved(size_t index, AppListItemModel* item) {}
23 // Triggered after |item| has been moved from |from_index| to |to_index|.
24 virtual void OnListItemMoved(size_t from_index,
26 AppListItemModel* item) {}
29 virtual ~AppListItemListObserver() {}
32 } // namespace app_list
34 #endif // UI_APP_LIST_APP_LIST_ITEM_LIST_OBSERVER_H_