1 // Copyright (c) 2012 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. 4 5 #ifndef ASH_LAUNCHER_LAUNCHER_MODEL_OBSERVER_H_ 6 #define ASH_LAUNCHER_LAUNCHER_MODEL_OBSERVER_H_ 7 8 #include "ash/ash_export.h" 9 #include "ash/launcher/launcher_types.h" 10 11 namespace ash { 12 13 struct LauncherItem; 14 15 class ASH_EXPORT LauncherModelObserver { 16 public: 17 // Invoked after an item has been added to the model. 18 virtual void LauncherItemAdded(int index) = 0; 19 20 // Invoked after an item has been removed. |index| is the index the item was 21 // at. 22 virtual void LauncherItemRemoved(int index, LauncherID id) = 0; 23 24 // Invoked after an item has been moved. See LauncherModel::Move() for details 25 // of the arguments. 26 virtual void LauncherItemMoved(int start_index, int target_index) = 0; 27 28 // Invoked when the state of an item changes. |old_item| is the item 29 // before the change. 30 virtual void LauncherItemChanged(int index, const LauncherItem& old_item) = 0; 31 32 // Invoked when launcher status is changed. 33 virtual void LauncherStatusChanged() = 0; 34 35 protected: 36 virtual ~LauncherModelObserver() {} 37 }; 38 39 } // namespace ash 40 41 #endif // ASH_LAUNCHER_LAUNCHER_MODEL_OBSERVER_H_ 42
