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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 ASH_MULTI_CAPTURE_MULTI_CAPTURE_SERVICE_H_
#define ASH_MULTI_CAPTURE_MULTI_CAPTURE_SERVICE_H_
#include <string>
#include "ash/ash_export.h"
#include "base/observer_list.h"
#include "base/observer_list_types.h"
#include "url/origin.h"
namespace ash {
// Receives events about multi captures being started / stopped and forwards it
// to ash clients to show usage indicators.
class ASH_EXPORT MultiCaptureService {
public:
class Observer : public base::CheckedObserver {
public:
// Event to inform about a started multi capture. The `label` is a unique
// identifier that can be used to connect started / stopped events.
// The `origin` is the capturer's origin.
// TODO(crbug.com/40225619): Consider transferred tracks by either adding
// a MultiCaptureTransferred event or by making sure the label remains
// constant throughout the lifetime of the capture.
virtual void MultiCaptureStarted(const std::string& label,
const url::Origin& origin) = 0;
// Event to inform that an app started multi capture. The `label` is a
// unique identifier that can be used to connect started / stopped events.
// The `app_id` is the id of the calling app (as given in the app service)
// and `app_short_name` is the short name of the app (derived from the app
// manifest or the app title).
virtual void MultiCaptureStartedFromApp(const std::string& label,
const std::string& app_id,
const std::string& app_short_name,
const url::Origin& app_origin) = 0;
virtual void MultiCaptureStopped(const std::string& label) = 0;
virtual void MultiCaptureServiceDestroyed() = 0;
protected:
~Observer() override = default;
};
MultiCaptureService();
virtual ~MultiCaptureService();
MultiCaptureService(const MultiCaptureService&) = delete;
MultiCaptureService& operator=(const MultiCaptureService&) = delete;
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
void NotifyMultiCaptureStarted(const std::string& label,
const url::Origin& origin);
void NotifyMultiCaptureStartedFromApp(const std::string& label,
const std::string& app_id,
const std::string& app_short_name,
const url::Origin& app_origin);
void NotifyMultiCaptureStopped(const std::string& label);
private:
base::ObserverList<Observer> observers_;
};
} // namespace ash
#endif // ASH_MULTI_CAPTURE_MULTI_CAPTURE_SERVICE_H_
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