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// Copyright (c) 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_APP_LIST_MODEL_APP_LIST_ITEM_LIST_OBSERVER_H_
#define ASH_APP_LIST_MODEL_APP_LIST_ITEM_LIST_OBSERVER_H_
#include <stddef.h>
#include "ash/app_list/model/app_list_model_export.h"
namespace ash {
class AppListItem;
class APP_LIST_MODEL_EXPORT AppListItemListObserver {
public:
// Triggered after |item| has been added to the list at |index|.
virtual void OnListItemAdded(size_t index, AppListItem* item) {}
// Triggered after an item has been removed from the list at |index|, just
// before the item is deleted.
virtual void OnListItemRemoved(size_t index, AppListItem* item) {}
// Triggered after |item| has been moved from |from_index| to |to_index|.
// Note: |from_index| may equal |to_index| if only the ordinal has changed.
virtual void OnListItemMoved(size_t from_index,
size_t to_index,
AppListItem* item) {}
// Triggered after the item at the corresponding index in the top level has
// started or completed installing and should be highlighted.
virtual void OnAppListItemHighlight(size_t index, bool highlight) {}
protected:
virtual ~AppListItemListObserver() {}
};
} // namespace ash
#endif // ASH_APP_LIST_MODEL_APP_LIST_ITEM_LIST_OBSERVER_H_