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// Copyright 2023 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_MEDIA_CAPTURED_SURFACE_CONTROL_PERMISSION_MANAGER_H_
#define CONTENT_BROWSER_MEDIA_CAPTURED_SURFACE_CONTROL_PERMISSION_MANAGER_H_
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "content/public/browser/global_routing_id.h"
namespace content {
// Encapsulates the permission state and logic associated with the Captured
// Surface Control API. Objects of this class live on the IO thread.
class CONTENT_EXPORT CapturedSurfaceControlPermissionManager {
public:
enum class PermissionResult {
kGranted,
kDenied,
kError,
};
explicit CapturedSurfaceControlPermissionManager(
GlobalRenderFrameHostId capturer_rfh_id);
virtual ~CapturedSurfaceControlPermissionManager();
CapturedSurfaceControlPermissionManager(
const CapturedSurfaceControlPermissionManager&) = delete;
CapturedSurfaceControlPermissionManager& operator=(
const CapturedSurfaceControlPermissionManager&) = delete;
// Checks whether the user has approved the Captured Surface Control APIs.
// If permission has not yet been granted, attempts to prompt the user.
//
// Must be called on the IO thread.
//
// Note that if the same app is engaged in multiple concurrent captures,
// there is no way for the user to know which of these the permission
// is granted for. This is an extremely rare case, and would be
// harmless if it does happen.
virtual void CheckPermission(
base::OnceCallback<void(PermissionResult)> callback);
private:
// This static method normally just forwards the call to `manager`, but if
// `manager` is null, this static method invokes the callback directly,
// passing in an error. This is done to ensure that the callback is always
// executed, even if the user closes the captured tab while the prompt is
// pending. This method runs on the IO thread.
static void OnCheckResultStatic(
base::WeakPtr<CapturedSurfaceControlPermissionManager> manager,
base::OnceCallback<void(PermissionResult)> callback,
PermissionResult result);
// This method is invoked on the IO thread as a callback after the user is
// prompted to approve the use of Captured Surface Control APIs. This method
// receives the user's choice, updates this object's state accordingly, and
// invokes `callback` to inform the original caller of CheckPermission() of
// the result.
void OnCheckResult(base::OnceCallback<void(PermissionResult)> callback,
PermissionResult result);
const GlobalRenderFrameHostId capturer_rfh_id_;
base::WeakPtrFactory<CapturedSurfaceControlPermissionManager> weak_factory_{
this};
};
} // namespace content
#endif // CONTENT_BROWSER_MEDIA_CAPTURED_SURFACE_CONTROL_PERMISSION_MANAGER_H_
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