blob: 16ee21c423dd25db1c30d2d872fc3ab322e0ecbb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// Copyright 2013 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_SHELF_SHELF_MODEL_OBSERVER_H_
#define ASH_SHELF_SHELF_MODEL_OBSERVER_H_
#include "ash/ash_export.h"
#include "ash/shelf/shelf_item_types.h"
namespace ash {
struct ShelfItem;
class ASH_EXPORT ShelfModelObserver {
public:
// Invoked after an item has been added to the model.
virtual void ShelfItemAdded(int index) = 0;
// Invoked after an item has been removed. |index| is the index the item was
// at.
virtual void ShelfItemRemoved(int index, ShelfID id) = 0;
// Invoked after an item has been moved. See ShelfModel::Move() for details
// of the arguments.
virtual void ShelfItemMoved(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 ShelfItemChanged(int index, const ShelfItem& old_item) = 0;
protected:
virtual ~ShelfModelObserver() {}
};
} // namespace ash
#endif // ASH_SHELF_SHELF_MODEL_OBSERVER_H_
|
