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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 UI_APP_LIST_APP_LIST_MODEL_OBSERVER_H_
#define UI_APP_LIST_APP_LIST_MODEL_OBSERVER_H_
#include "ui/app_list/app_list_export.h"
#include "ui/app_list/app_list_model.h"
namespace app_list {
class AppListItem;
class APP_LIST_EXPORT AppListModelObserver {
public:
// Triggered after AppListModel's status has changed.
virtual void OnAppListModelStatusChanged() {}
// Triggered after AppListModel's state has changed.
virtual void OnAppListModelStateChanged(AppListModel::State old_state,
AppListModel::State new_state) {}
// Triggered after |item| has been added to the model.
virtual void OnAppListItemAdded(AppListItem* item) {}
// Triggered just before an item is deleted from the model.
virtual void OnAppListItemWillBeDeleted(AppListItem* item) {}
// Triggered just after an item is deleted from the model.
virtual void OnAppListItemDeleted() {}
// Triggered after |item| has moved, changed folders, or changed properties.
virtual void OnAppListItemUpdated(AppListItem* item) {}
// Triggered when the custom launcher page enabled state is changed.
virtual void OnCustomLauncherPageEnabledStateChanged(bool enabled) {}
protected:
virtual ~AppListModelObserver() {}
};
} // namespace app_list
#endif // UI_APP_LIST_APP_LIST_MODEL_OBSERVER_H_
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