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// Copyright (c) 2012 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_LAUNCHER_LAUNCHER_MODEL_OBSERVER_H_
#define ASH_LAUNCHER_LAUNCHER_MODEL_OBSERVER_H_
#include "ash/ash_export.h"
#include "ash/launcher/launcher_types.h"
namespace ash {
struct LauncherItem;
class ASH_EXPORT LauncherModelObserver {
public:
// Invoked after an item has been added to the model.
virtual void LauncherItemAdded(int index) = 0;
// Invoked after an item has been removed. |index| is the index the item was
// at.
virtual void LauncherItemRemoved(int index, LauncherID id) = 0;
// Invoked after an item has been moved. See LauncherModel::Move() for details
// of the arguments.
virtual void LauncherItemMoved(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 LauncherItemChanged(int index, const LauncherItem& old_item) = 0;
// Invoked when launcher status is changed.
virtual void LauncherStatusChanged() = 0;
protected:
virtual ~LauncherModelObserver() {}
};
} // namespace ash
#endif // ASH_LAUNCHER_LAUNCHER_MODEL_OBSERVER_H_
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