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// 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_DELEGATE_H_
#define ASH_SHELF_SHELF_DELEGATE_H_
#include "ash/ash_export.h"
#include "ash/launcher/launcher_types.h"
namespace ash {
class Shelf;
// Delegate for the Shelf.
class ASH_EXPORT ShelfDelegate {
public:
// Shelf owns the delegate.
virtual ~ShelfDelegate() {}
// Callback used to allow delegate to perform initialization actions that
// depend on the Shelf being in a known state.
virtual void OnShelfCreated(Shelf* shelf) = 0;
// Callback used to inform the delegate that a specific shelf no longer
// exists.
virtual void OnShelfDestroyed(Shelf* shelf) = 0;
// Get the shelf ID from an application ID.
virtual LauncherID GetLauncherIDForAppID(const std::string& app_id) = 0;
// Get the application ID for a given launcher ID.
virtual const std::string& GetAppIDForLauncherID(LauncherID id) = 0;
// Pins an app with |app_id| to shelf. A running instance will get pinned.
// In case there is no running instance a new shelf item is created and
// pinned.
virtual void PinAppWithID(const std::string& app_id) = 0;
// Check if the app with |app_id_| is pinned to the shelf.
virtual bool IsAppPinned(const std::string& app_id) = 0;
// Checks whether the user is allowed to pin/unpin apps. Pinning may be
// disallowed by policy in case there is a pre-defined set of pinned apps.
virtual bool CanPin() const = 0;
// Unpins app item with |app_id|.
virtual void UnpinAppWithID(const std::string& app_id) = 0;
};
} // namespace ash
#endif // ASH_SHELF_SHELF_DELEGATE_H_
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