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// Copyright 2022 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_CAST_RECEIVER_BROWSER_PUBLIC_STREAMING_CONFIG_MANAGER_H_
#define COMPONENTS_CAST_RECEIVER_BROWSER_PUBLIC_STREAMING_CONFIG_MANAGER_H_
#include <optional>
#include "base/check.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "components/cast_streaming/browser/public/receiver_config.h"
namespace cast_receiver {
// Handles access of the streaming config.
class StreamingConfigManager {
public:
// Observer for changes in the streaming config.
class ConfigObserver : public base::CheckedObserver {
public:
~ConfigObserver() override;
// Called when the associated window is shown.
virtual void OnStreamingConfigSet(
const cast_streaming::ReceiverConfig& config) = 0;
};
StreamingConfigManager();
virtual ~StreamingConfigManager();
// Returns whether any config has been received thus far.
bool has_config() const { return config_.has_value(); }
// Returns the current config. May only be called if |has_config()| is true.
const cast_streaming::ReceiverConfig& config() const {
DCHECK(has_config());
return config_.value();
}
// Adds or removes a ConfigObserver. A callback will be fired for all future
// updates of the receiver config.
void AddConfigObserver(ConfigObserver& observer);
void RemoveConfigbserver(ConfigObserver& observer);
protected:
// Called when the streaming config has been set or changed.
void OnStreamingConfigSet(cast_streaming::ReceiverConfig config);
private:
std::optional<cast_streaming::ReceiverConfig> config_ = std::nullopt;
base::ObserverList<ConfigObserver> observers_;
};
} // namespace cast_receiver
#endif // COMPONENTS_CAST_RECEIVER_BROWSER_PUBLIC_STREAMING_CONFIG_MANAGER_H_
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