30 lines
885 B
C++
30 lines
885 B
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef MOZILLA_PRINCIPALCHANGEOBSERVER_H_
|
|
#define MOZILLA_PRINCIPALCHANGEOBSERVER_H_
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
/**
|
|
* A PrincipalChangeObserver for any type, but originating from DOMMediaStream,
|
|
* then expanded to MediaStreamTrack.
|
|
*
|
|
* Used to learn about dynamic changes to an object's principal.
|
|
* Operations relating to these observers must be confined to the main thread.
|
|
*/
|
|
template<typename T>
|
|
class PrincipalChangeObserver
|
|
{
|
|
public:
|
|
virtual void PrincipalChanged(T* aArg) = 0;
|
|
};
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|
|
|
|
#endif /* MOZILLA_PRINCIPALCHANGEOBSERVER_H_ */
|