blob: ae8938f8fb466bf2e25a8a01ef8f0b8286bc5591 [file] [log] [blame]
// Copyright 2015 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 CHROMECAST_NET_CONNECTIVITY_CHECKER_H_
#define CHROMECAST_NET_CONNECTIVITY_CHECKER_H_
#include <memory>
#include "base/macros.h"
#include "base/memory/ref_counted_delete_on_sequence.h"
#include "base/observer_list_threadsafe.h"
#include "base/sequenced_task_runner_helpers.h"
#include "chromecast/net/time_sync_tracker.h"
namespace base {
class SingleThreadTaskRunner;
}
namespace network {
class PendingSharedURLLoaderFactory;
class NetworkConnectionTracker;
} // namespace network
namespace chromecast {
// Checks if internet connectivity is available.
class ConnectivityChecker
: public base::RefCountedDeleteOnSequence<ConnectivityChecker> {
public:
class ConnectivityObserver {
public:
// Will be called when internet connectivity changes.
virtual void OnConnectivityChanged(bool connected) = 0;
protected:
ConnectivityObserver() {}
virtual ~ConnectivityObserver() {}
private:
DISALLOW_COPY_AND_ASSIGN(ConnectivityObserver);
};
static scoped_refptr<ConnectivityChecker> Create(
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
std::unique_ptr<network::PendingSharedURLLoaderFactory>
pending_url_loader_factory,
network::NetworkConnectionTracker* network_connection_tracker,
TimeSyncTracker* time_sync_tracker = nullptr);
void AddConnectivityObserver(ConnectivityObserver* observer);
void RemoveConnectivityObserver(ConnectivityObserver* observer);
// Returns if there is internet connectivity.
virtual bool Connected() const = 0;
// Checks for connectivity.
virtual void Check() = 0;
protected:
explicit ConnectivityChecker(
scoped_refptr<base::SingleThreadTaskRunner> task_runner);
virtual ~ConnectivityChecker();
// Notifies observes that connectivity has changed.
void Notify(bool connected);
private:
friend class base::RefCountedDeleteOnSequence<ConnectivityChecker>;
friend class base::DeleteHelper<ConnectivityChecker>;
const scoped_refptr<base::ObserverListThreadSafe<ConnectivityObserver>>
connectivity_observer_list_;
DISALLOW_COPY_AND_ASSIGN(ConnectivityChecker);
};
} // namespace chromecast
#endif // CHROMECAST_NET_CONNECTIVITY_CHECKER_H_