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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_XR_METRICS_SESSION_METRICS_HELPER_H_
#define CONTENT_BROWSER_XR_METRICS_SESSION_METRICS_HELPER_H_
#include <memory>
#include <unordered_map>
#include <unordered_set>
#include "content/common/content_export.h"
#include "content/public/browser/web_contents_observer.h"
#include "device/vr/public/mojom/vr_service.mojom-forward.h"
#include "device/vr/public/mojom/xr_device.mojom-forward.h"
#include "device/vr/public/mojom/xr_session.mojom-forward.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_source_id.h"
namespace content {
class SessionTimer;
class WebXRSessionTracker;
// This class is not thread-safe and must only be used from the main thread.
// This class tracks metrics for various kinds of sessions, including VR
// browsing sessions, WebXR presentation sessions, and others. It mainly tracks
// metrics that require state monitoring, such as durations, but also tracks
// data we want attached to that, such as number of videos watched and how the
// session was started.
class CONTENT_EXPORT SessionMetricsHelper
: public content::WebContentsObserver {
public:
// Returns the SessionMetricsHelper singleton if it has been created for the
// WebContents.
static SessionMetricsHelper* FromWebContents(content::WebContents* contents);
static SessionMetricsHelper* CreateForWebContents(
content::WebContents* contents);
~SessionMetricsHelper() override;
// Records that an inline session was started and returns the |PendingRemote|
// for the created session recorder.
mojo::PendingRemote<device::mojom::XRSessionMetricsRecorder>
StartInlineSession(const device::mojom::XRSessionOptions& session_options,
const std::unordered_set<device::mojom::XRSessionFeature>&
enabled_features,
size_t session_id);
// Records that inline session was stopped. Will record an UKM entry.
void StopAndRecordInlineSession(size_t session_id);
// Records that an immersive session was started and returns the
// |PendingRemote| for the created session recorder. Two immersive sessions
// may not exist simultaneously.
mojo::PendingRemote<device::mojom::XRSessionMetricsRecorder>
StartImmersiveSession(
const device::mojom::XRDeviceId& runtime_id,
const device::mojom::XRSessionOptions& session_options,
const std::unordered_set<device::mojom::XRSessionFeature>&
enabled_features);
// Records that an immersive session was stopped. Will record a UKM entry.
void StopAndRecordImmersiveSession();
private:
explicit SessionMetricsHelper(content::WebContents* contents);
// WebContentsObserver
void PrimaryPageChanged(content::Page& page) override;
std::unique_ptr<SessionTimer> session_timer_;
std::unique_ptr<WebXRSessionTracker> webxr_immersive_session_tracker_;
// Map associating active inline session Ids to their trackers. The contents
// of the map are managed by |StartInlineSession| and
// |StopAndRecordInlineSession|.
std::unordered_map<size_t, std::unique_ptr<WebXRSessionTracker>>
webxr_inline_session_trackers_;
};
} // namespace content
#endif // CONTENT_BROWSER_XR_METRICS_SESSION_METRICS_HELPER_H_
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