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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_DESKS_STORAGE_CORE_DESK_MODEL_OBSERVER_H_
#define COMPONENTS_DESKS_STORAGE_CORE_DESK_MODEL_OBSERVER_H_
#include <vector>
#include "base/memory/raw_ptr.h"
#include "base/uuid.h"
namespace ash {
class DeskTemplate;
}
namespace desks_storage {
// Observer for the Desk model. In the observer methods care should
// be taken to not modify the model.
class DeskModelObserver {
public:
DeskModelObserver() = default;
DeskModelObserver(const DeskModelObserver&) = delete;
DeskModelObserver& operator=(const DeskModelObserver&) = delete;
// Invoked when the model has finished loading. Until this method is called it
// is unsafe to use the model.
virtual void DeskModelLoaded() {}
// Invoked when the model is about to be destroyed. Gives observes which may
// outlive the model a chance to stop observing. Not pure virtual because it
// needs to be called from the destructor.
virtual void OnDeskModelDestroying() {}
// Invoked when desk templates are added/updated, removed remotely via sync.
// This is the mechanism for the sync server to push changes in the state of
// the model to clients.
virtual void EntriesAddedOrUpdatedRemotely(
const std::vector<raw_ptr<const ash::DeskTemplate, VectorExperimental>>&
new_entries) {}
virtual void EntriesRemovedRemotely(const std::vector<base::Uuid>& uuids) {}
protected:
virtual ~DeskModelObserver() = default;
};
} // namespace desks_storage
#endif // COMPONENTS_DESKS_STORAGE_CORE_DESK_MODEL_OBSERVER_H_
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