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// 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 "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/observer_list_threadsafe.h"
class GURL;
namespace base {
class SingleThreadTaskRunner;
}
namespace chromecast {
// Checks if internet connectivity is available.
class ConnectivityChecker
: public base::RefCountedThreadSafe<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);
ConnectivityChecker();
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:
virtual ~ConnectivityChecker();
// Notifies observes that connectivity has changed.
void Notify(bool connected);
private:
friend class base::RefCountedThreadSafe<ConnectivityChecker>;
const scoped_refptr<base::ObserverListThreadSafe<ConnectivityObserver>>
connectivity_observer_list_;
DISALLOW_COPY_AND_ASSIGN(ConnectivityChecker);
};
} // namespace chromecast
#endif // CHROMECAST_NET_CONNECTIVITY_CHECKER_H_
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