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content / public / browser / browser_xr_runtime.h [blame]
// Copyright 2020 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_PUBLIC_BROWSER_BROWSER_XR_RUNTIME_H_
#define CONTENT_PUBLIC_BROWSER_BROWSER_XR_RUNTIME_H_
#include "base/observer_list_types.h"
#include "content/common/content_export.h"
#include "device/vr/public/mojom/vr_service.mojom.h"
namespace content {
class WebContents;
// This interface allows observing the state of the XR service for a particular
// runtime. In particular, observers may currently know when the browser
// considers a WebContents presenting to an immersive headset. Implementers of
// this interface will be called on the main browser thread. Currently this is
// used on Windows to drive overlays.
class CONTENT_EXPORT BrowserXRRuntime {
public:
class Observer : public base::CheckedObserver {
public:
// Called when the observed runtime's camera in use state changes for the
// currently active immersive WebXR session. When |in_use| is true,
// |web_contents| will not be null.
virtual void WebXRCameraInUseChanged(WebContents* web_contents,
bool in_use) {}
};
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_BROWSER_XR_RUNTIME_H_