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// Copyright 2019 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_SEND_TAB_TO_SELF_SEND_TAB_TO_SELF_MODEL_OBSERVER_H_
#define COMPONENTS_SEND_TAB_TO_SELF_SEND_TAB_TO_SELF_MODEL_OBSERVER_H_
#include <string>
#include <vector>
namespace send_tab_to_self {
class SendTabToSelfEntry;
// Observer for the Send Tab To Self model. In the observer methods care should
// be taken to not modify the model.
class SendTabToSelfModelObserver {
public:
SendTabToSelfModelObserver() = default;
SendTabToSelfModelObserver(const SendTabToSelfModelObserver&) = delete;
SendTabToSelfModelObserver& operator=(const SendTabToSelfModelObserver&) =
delete;
virtual ~SendTabToSelfModelObserver() = default;
// Invoked when the model has finished loading. Until this method is called it
// is unsafe to use the model.
// This call has overlaps with SendTabToSelfModel::IsReady but by having this
// be a pure virtual function we can ensure that subclasses of this class will
// have a way to ensure that the model is active before interacting with it.
virtual void SendTabToSelfModelLoaded() = 0;
// Invoked when elements of the model are added, removed, or updated. This is
// the mechanism for the sync server to push changes in the state of the model
// to clients.
// TODO(crbug.com/40619926) move EntriesAddedRemotely to use const refs to
// clarify ownership.
virtual void EntriesAddedRemotely(
const std::vector<const SendTabToSelfEntry*>& new_entries) = 0;
// Invoked when a new entry is added on the local device.
virtual void EntryAddedLocally(const SendTabToSelfEntry* entry) {}
virtual void EntriesRemovedRemotely(
const std::vector<std::string>& guids) = 0;
// This observer will notify listeners of new and existing entries
// that have been marked as opened.
virtual void EntriesOpenedRemotely(
const std::vector<const SendTabToSelfEntry*>& opened_entries) {}
};
} // namespace send_tab_to_self
#endif // COMPONENTS_SEND_TAB_TO_SELF_SEND_TAB_TO_SELF_MODEL_OBSERVER_H_
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