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// Copyright 2014 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 COMPONENTS_COPRESENCE_HANDLERS_GCM_HANDLER_H_
#define COMPONENTS_COPRESENCE_HANDLERS_GCM_HANDLER_H_
#include <string>
#include "base/callback_forward.h"
#include "base/macros.h"
namespace gcm {
class GCMDriver;
}
namespace copresence {
// A class to handle GCM messages from the Copresence server. As far as the
// rest of the system is concerned, it simply provides the registered GCM ID.
// The implementation will call other classes to enact the message contents.
class GCMHandler {
public:
// Callback to report that registration has completed.
// Returns an empty ID if registration failed.
using RegistrationCallback = base::Callback<void(const std::string&)>;
GCMHandler() {}
virtual ~GCMHandler() {}
// Request the GCM ID. It may be returned now or later, via the callback.
virtual void GetGcmId(const RegistrationCallback& callback) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(GCMHandler);
};
} // namespace copresence
#endif // COMPONENTS_COPRESENCE_HANDLERS_GCM_HANDLER_H_
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