tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

MediaKeySystemAccessPermissionRequest.cpp (3142B)

      1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "MediaKeySystemAccessPermissionRequest.h"
      8 
      9 #include "nsGlobalWindowInner.h"
     10 
     11 namespace mozilla::dom {
     12 
     13 NS_IMPL_CYCLE_COLLECTION_INHERITED(MediaKeySystemAccessPermissionRequest,
     14                                   ContentPermissionRequestBase)
     15 
     16 NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(
     17    MediaKeySystemAccessPermissionRequest, ContentPermissionRequestBase)
     18 
     19 /* static */
     20 already_AddRefed<MediaKeySystemAccessPermissionRequest>
     21 MediaKeySystemAccessPermissionRequest::Create(nsPIDOMWindowInner* aWindow) {
     22  // Could conceivably be created off main thread then used on main thread
     23  // later. If we really need to do that at some point we could relax this
     24  // assert.
     25  AssertIsOnMainThread();
     26  if (!aWindow) {
     27    return nullptr;
     28  }
     29 
     30  nsGlobalWindowInner* innerWindow = nsGlobalWindowInner::Cast(aWindow);
     31  if (!innerWindow->GetPrincipal()) {
     32    return nullptr;
     33  }
     34 
     35  RefPtr<MediaKeySystemAccessPermissionRequest> request =
     36      new MediaKeySystemAccessPermissionRequest(innerWindow);
     37  return request.forget();
     38 }
     39 
     40 MediaKeySystemAccessPermissionRequest::MediaKeySystemAccessPermissionRequest(
     41    nsGlobalWindowInner* aWindow)
     42    : ContentPermissionRequestBase(aWindow->GetPrincipal(), aWindow,
     43                                   "media.eme.require-app-approval"_ns,
     44                                   "media-key-system-access"_ns) {}
     45 
     46 MediaKeySystemAccessPermissionRequest::
     47    ~MediaKeySystemAccessPermissionRequest() {
     48  AssertIsOnMainThread();
     49  // If a request has not been serviced by the time it is destroyed, treat it
     50  // as if the request was denied.
     51  Cancel();
     52 }
     53 
     54 already_AddRefed<MediaKeySystemAccessPermissionRequest::RequestPromise>
     55 MediaKeySystemAccessPermissionRequest::GetPromise() {
     56  return mPromiseHolder.Ensure(__func__);
     57 }
     58 
     59 nsresult MediaKeySystemAccessPermissionRequest::Start() {
     60  // Check test prefs to see if we should short circuit. We want to do this
     61  // before checking the cached value so we can have pref changes take effect
     62  // without refreshing the page.
     63  MediaKeySystemAccessPermissionRequest::PromptResult promptResult =
     64      CheckPromptPrefs();
     65  if (promptResult ==
     66      MediaKeySystemAccessPermissionRequest::PromptResult::Granted) {
     67    return Allow(JS::UndefinedHandleValue);
     68  }
     69  if (promptResult ==
     70      MediaKeySystemAccessPermissionRequest::PromptResult::Denied) {
     71    return Cancel();
     72  }
     73 
     74  return nsContentPermissionUtils::AskPermission(this, mWindow);
     75 }
     76 
     77 NS_IMETHODIMP
     78 MediaKeySystemAccessPermissionRequest::Allow(JS::Handle<JS::Value> aChoices) {
     79  AssertIsOnMainThread();
     80  mPromiseHolder.ResolveIfExists(true, __func__);
     81  return NS_OK;
     82 }
     83 
     84 NS_IMETHODIMP
     85 MediaKeySystemAccessPermissionRequest::Cancel() {
     86  AssertIsOnMainThread();
     87  mPromiseHolder.RejectIfExists(false, __func__);
     88  return NS_OK;
     89 }
     90 
     91 }  // namespace mozilla::dom