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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROMEOS_ASH_COMPONENTS_PHONEHUB_BROWSER_TABS_MODEL_PROVIDER_H_
#define CHROMEOS_ASH_COMPONENTS_PHONEHUB_BROWSER_TABS_MODEL_PROVIDER_H_
#include <ostream>
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "chromeos/ash/components/phonehub/browser_tabs_model.h"
namespace ash::phonehub {
// Responsible for providing BrowserTabsModel information to observers.
class BrowserTabsModelProvider {
public:
class Observer : public base::CheckedObserver {
public:
~Observer() override = default;
virtual void OnBrowserTabsUpdated(
bool is_sync_enabled,
const std::vector<BrowserTabsModel::BrowserTabMetadata>&
browser_tabs_metadata) = 0;
};
BrowserTabsModelProvider(const BrowserTabsModelProvider&) = delete;
BrowserTabsModelProvider* operator=(const BrowserTabsModelProvider&) = delete;
virtual ~BrowserTabsModelProvider();
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// Used to manually request updates for the latest browser tab metadata,
// instead of lazily waiting for an update to occur on its own. This may be
// advantageous when the user opens the PhoneHub tray immediately after
// visiting a link on the connected phone's Chrome Browser.
virtual void TriggerRefresh() = 0;
virtual bool IsBrowserTabSyncEnabled() = 0;
protected:
BrowserTabsModelProvider();
void NotifyBrowserTabsUpdated(
bool is_sync_enabled,
const std::vector<BrowserTabsModel::BrowserTabMetadata>
browser_tabs_metadata);
private:
base::ObserverList<Observer> observer_list_;
};
} // namespace ash::phonehub
#endif // CHROMEOS_ASH_COMPONENTS_PHONEHUB_BROWSER_TABS_MODEL_PROVIDER_H_
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