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Diffstat (limited to '')
| -rw-r--r-- | dom/vr/XRSystem.cpp | 703 |
1 files changed, 703 insertions, 0 deletions
diff --git a/dom/vr/XRSystem.cpp b/dom/vr/XRSystem.cpp new file mode 100644 index 0000000000..09b9e07476 --- /dev/null +++ b/dom/vr/XRSystem.cpp @@ -0,0 +1,703 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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/. */ + +#include "mozilla/dom/XRSystem.h" + +#include "mozilla/StaticPrefs_dom.h" +#include "mozilla/dom/XRPermissionRequest.h" +#include "mozilla/dom/XRSession.h" +#include "mozilla/dom/BindingCallContext.h" +#include "mozilla/dom/Document.h" +#include "mozilla/dom/Promise.h" +#include "mozilla/dom/FeaturePolicyUtils.h" +#include "mozilla/dom/PermissionMessageUtils.h" +#include "nsGlobalWindowInner.h" +#include "nsThreadUtils.h" +#include "gfxVR.h" +#include "VRDisplayClient.h" +#include "VRManagerChild.h" + +namespace mozilla::dom { + +using namespace gfx; + +//////////////////////////////////////////////////////////////////////////////// +// XRSystem cycle collection +NS_IMPL_CYCLE_COLLECTION_CLASS(XRSystem) + +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(XRSystem, + DOMEventTargetHelper) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mActiveImmersiveSession) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInlineSessions) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIsSessionSupportedRequests) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE( + mRequestSessionRequestsWaitingForRuntimeDetection) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRequestSessionRequestsWithoutHardware) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE( + mRequestSessionRequestsWaitingForEnumeration) +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END + +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(XRSystem, DOMEventTargetHelper) + NS_IMPL_CYCLE_COLLECTION_UNLINK(mActiveImmersiveSession) + NS_IMPL_CYCLE_COLLECTION_UNLINK(mInlineSessions) + NS_IMPL_CYCLE_COLLECTION_UNLINK(mIsSessionSupportedRequests) + NS_IMPL_CYCLE_COLLECTION_UNLINK( + mRequestSessionRequestsWaitingForRuntimeDetection) + NS_IMPL_CYCLE_COLLECTION_UNLINK(mRequestSessionRequestsWithoutHardware) + NS_IMPL_CYCLE_COLLECTION_UNLINK(mRequestSessionRequestsWaitingForEnumeration) + // Don't need NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER because + // DOMEventTargetHelper does it for us. +NS_IMPL_CYCLE_COLLECTION_UNLINK_END + +NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(XRSystem, DOMEventTargetHelper) + +JSObject* XRSystem::WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) { + return XRSystem_Binding::Wrap(aCx, this, aGivenProto); +} + +// static +already_AddRefed<XRSystem> XRSystem::Create(nsPIDOMWindowInner* aWindow) { + MOZ_ASSERT(aWindow); + + RefPtr<XRSystem> service = new XRSystem(aWindow); + return service.forget(); +} + +XRSystem::XRSystem(nsPIDOMWindowInner* aWindow) + : DOMEventTargetHelper(aWindow), + mShuttingDown(false), + mPendingImmersiveSession(false), + mEnumerationInFlight(false) { + // Unregister with VRManagerChild + VRManagerChild* vmc = VRManagerChild::Get(); + if (vmc) { + vmc->AddListener(this); + } +} + +void XRSystem::Shutdown() { + MOZ_ASSERT(!mShuttingDown); + mShuttingDown = true; + + // Unregister from VRManagerChild + if (VRManagerChild::IsCreated()) { + VRManagerChild* vmc = VRManagerChild::Get(); + vmc->RemoveListener(this); + } +} + +void XRSystem::SessionEnded(XRSession* aSession) { + if (mActiveImmersiveSession == aSession) { + mActiveImmersiveSession = nullptr; + } + mInlineSessions.RemoveElement(aSession); +} + +already_AddRefed<Promise> XRSystem::IsSessionSupported(XRSessionMode aMode, + ErrorResult& aRv) { + nsCOMPtr<nsIGlobalObject> global = GetParentObject(); + NS_ENSURE_TRUE(global, nullptr); + + RefPtr<Promise> promise = Promise::Create(global, aRv); + NS_ENSURE_TRUE(!aRv.Failed(), nullptr); + + if (aMode == XRSessionMode::Inline) { + promise->MaybeResolve(true); + return promise.forget(); + } + + if (mIsSessionSupportedRequests.IsEmpty()) { + gfx::VRManagerChild* vm = gfx::VRManagerChild::Get(); + vm->DetectRuntimes(); + } + + RefPtr<IsSessionSupportedRequest> request = + new IsSessionSupportedRequest(aMode, promise); + mIsSessionSupportedRequests.AppendElement(request); + return promise.forget(); +} + +already_AddRefed<Promise> XRSystem::RequestSession( + JSContext* aCx, XRSessionMode aMode, const XRSessionInit& aOptions, + CallerType aCallerType, ErrorResult& aRv) { + nsCOMPtr<nsIGlobalObject> global = GetParentObject(); + NS_ENSURE_TRUE(global, nullptr); + + RefPtr<Promise> promise = Promise::Create(global, aRv); + NS_ENSURE_TRUE(!aRv.Failed(), nullptr); + + bool immersive = (aMode == XRSessionMode::Immersive_vr || + aMode == XRSessionMode::Immersive_ar); + + // The document must be a responsible document, active and focused. + nsCOMPtr<Document> responsibleDocument = GetDocumentIfCurrent(); + if (!responsibleDocument) { + // The document is not trustworthy + promise->MaybeRejectWithSecurityError("This document is not responsible."); + return promise.forget(); + } + + if (immersive || aOptions.mRequiredFeatures.WasPassed() || + aOptions.mOptionalFeatures.WasPassed()) { + if (!responsibleDocument->HasValidTransientUserGestureActivation() && + aCallerType != CallerType::System && + StaticPrefs::dom_vr_require_gesture()) { + // A user gesture is required. + promise->MaybeRejectWithSecurityError("A user gesture is required."); + return promise.forget(); + } + } + + nsTArray<XRReferenceSpaceType> requiredReferenceSpaceTypes; + nsTArray<XRReferenceSpaceType> optionalReferenceSpaceTypes; + + /** + * By default, all sessions will require XRReferenceSpaceType::Viewer + * and immersive sessions will require XRReferenceSpaceType::Local. + * + * https://www.w3.org/TR/webxr/#default-features + */ + requiredReferenceSpaceTypes.AppendElement(XRReferenceSpaceType::Viewer); + if (immersive) { + requiredReferenceSpaceTypes.AppendElement(XRReferenceSpaceType::Local); + } + + BindingCallContext callCx(aCx, "XRSystem.requestSession"); + + if (aOptions.mRequiredFeatures.WasPassed()) { + const Sequence<JS::Value>& arr = (aOptions.mRequiredFeatures.Value()); + for (const JS::Value& val : arr) { + if (!val.isNull() && !val.isUndefined()) { + bool bFound = false; + JS::Rooted<JS::Value> v(aCx, val); + int index = 0; + if (FindEnumStringIndex<false>( + callCx, v, XRReferenceSpaceTypeValues::strings, + "XRReferenceSpaceType", "Argument 2 of XR.requestSession", + &index)) { + if (index >= 0) { + requiredReferenceSpaceTypes.AppendElement( + static_cast<XRReferenceSpaceType>(index)); + bFound = true; + } + } + if (!bFound) { + promise->MaybeRejectWithNotSupportedError( + "A required feature for the XRSession is not available."); + return promise.forget(); + } + } + } + } + + if (aOptions.mOptionalFeatures.WasPassed()) { + const Sequence<JS::Value>& arr = (aOptions.mOptionalFeatures.Value()); + for (const JS::Value& val : arr) { + if (!val.isNull() && !val.isUndefined()) { + JS::Rooted<JS::Value> v(aCx, val); + int index = 0; + if (FindEnumStringIndex<false>( + callCx, v, XRReferenceSpaceTypeValues::strings, + "XRReferenceSpaceType", "Argument 2 of XR.requestSession", + &index)) { + if (index >= 0) { + optionalReferenceSpaceTypes.AppendElement( + static_cast<XRReferenceSpaceType>(index)); + } + } + } + } + } + + if (immersive) { + if (mPendingImmersiveSession || mActiveImmersiveSession) { + promise->MaybeRejectWithInvalidStateError( + "There can only be one immersive XRSession."); + return promise.forget(); + } + mPendingImmersiveSession = true; + } + + bool isChromeSession = aCallerType == CallerType::System; + uint32_t presentationGroup = + isChromeSession ? gfx::kVRGroupChrome : gfx::kVRGroupContent; + RefPtr<RequestSessionRequest> request = new RequestSessionRequest( + aMode, presentationGroup, promise, requiredReferenceSpaceTypes, + optionalReferenceSpaceTypes); + if (request->WantsHardware()) { + QueueSessionRequestWithEnumeration(request); + } else { + QueueSessionRequestWithoutEnumeration(request); + } + + return promise.forget(); +} + +void XRSystem::QueueSessionRequestWithEnumeration( + RequestSessionRequest* aRequest) { + MOZ_ASSERT(aRequest->WantsHardware()); + mRequestSessionRequestsWaitingForRuntimeDetection.AppendElement(aRequest); + gfx::VRManagerChild* vm = gfx::VRManagerChild::Get(); + vm->DetectRuntimes(); +} + +void XRSystem::QueueSessionRequestWithoutEnumeration( + RequestSessionRequest* aRequest) { + MOZ_ASSERT(!aRequest->NeedsHardware()); + mRequestSessionRequestsWithoutHardware.AppendElement(aRequest); + + ResolveSessionRequestsWithoutHardware(); +} + +bool XRSystem::CancelHardwareRequest(RequestSessionRequest* aRequest) { + if (!aRequest->NeedsHardware()) { + // If hardware access was an optional requirement and the user + // opted not to provide access, queue the request + // to be resolved without hardware. + QueueSessionRequestWithoutEnumeration(aRequest); + return false; + } + + if (aRequest->IsImmersive()) { + mPendingImmersiveSession = false; + } + return true; +} + +bool XRSystem::OnXRPermissionRequestAllow() { + if (!gfx::VRManagerChild::IsCreated()) { + // It's possible that this callback returns after + // we have already started shutting down. + return false; + } + if (!mEnumerationInFlight) { + mEnumerationInFlight = true; + gfx::VRManagerChild* vm = gfx::VRManagerChild::Get(); + Unused << vm->EnumerateVRDisplays(); + } + return mEnumerationInFlight || + !mRequestSessionRequestsWaitingForEnumeration.IsEmpty(); +} + +void XRSystem::OnXRPermissionRequestCancel() { + nsTArray<RefPtr<RequestSessionRequest>> requestSessionRequests( + std::move(mRequestSessionRequestsWaitingForEnumeration)); + for (RefPtr<RequestSessionRequest>& request : requestSessionRequests) { + if (CancelHardwareRequest(request)) { + request->mPromise->MaybeRejectWithSecurityError( + "A device supporting the requested session " + "configuration could not be found."); + } + } +} + +bool XRSystem::FeaturePolicyBlocked() const { + nsGlobalWindowInner* win = nsGlobalWindowInner::Cast(GetOwner()); + if (!win) { + return true; + } + RefPtr<XRPermissionRequest> request = + new XRPermissionRequest(win, win->WindowID()); + return !(request->CheckPermissionDelegate()); +} + +bool XRSystem::HasActiveImmersiveSession() const { + return mActiveImmersiveSession; +} + +void XRSystem::ResolveSessionRequestsWithoutHardware() { + // Resolve promises returned by RequestSession + nsTArray<RefPtr<gfx::VRDisplayClient>> displays; + // Try resolving support without a device, for inline sessions. + displays.AppendElement(nullptr); + + nsTArray<RefPtr<RequestSessionRequest>> requestSessionRequests( + std::move(mRequestSessionRequestsWithoutHardware)); + + ResolveSessionRequests(requestSessionRequests, displays); +} + +void XRSystem::NotifyEnumerationCompleted() { + // Enumeration has completed. + mEnumerationInFlight = false; + + if (!gfx::VRManagerChild::IsCreated()) { + // It's possible that this callback returns after + // we have already started shutting down. + return; + } + + // Resolve promises returned by RequestSession + nsTArray<RefPtr<gfx::VRDisplayClient>> displays; + gfx::VRManagerChild* vm = gfx::VRManagerChild::Get(); + vm->GetVRDisplays(displays); + + nsTArray<RefPtr<RequestSessionRequest>> requestSessionRequests( + std::move(mRequestSessionRequestsWaitingForEnumeration)); + + ResolveSessionRequests(requestSessionRequests, displays); +} + +void XRSystem::ResolveSessionRequests( + nsTArray<RefPtr<RequestSessionRequest>>& aRequests, + const nsTArray<RefPtr<gfx::VRDisplayClient>>& aDisplays) { + for (RefPtr<RequestSessionRequest>& request : aRequests) { + RefPtr<XRSession> session; + if (request->IsImmersive()) { + mPendingImmersiveSession = false; + } + // Select an XR device + for (const RefPtr<gfx::VRDisplayClient>& display : aDisplays) { + nsTArray<XRReferenceSpaceType> enabledReferenceSpaceTypes; + if (request->ResolveSupport(display, enabledReferenceSpaceTypes)) { + if (request->IsImmersive()) { + session = XRSession::CreateImmersiveSession( + GetOwner(), this, display, request->GetPresentationGroup(), + enabledReferenceSpaceTypes); + mActiveImmersiveSession = session; + } else { + session = XRSession::CreateInlineSession(GetOwner(), this, + enabledReferenceSpaceTypes); + mInlineSessions.AppendElement(session); + } + request->mPromise->MaybeResolve(session); + break; + } + } + if (!session) { + request->mPromise->MaybeRejectWithNotSupportedError( + "A device supporting the required XRSession configuration " + "could not be found."); + } + } +} + +void XRSystem::NotifyDetectRuntimesCompleted() { + ResolveIsSessionSupportedRequests(); + if (!mRequestSessionRequestsWaitingForRuntimeDetection.IsEmpty()) { + ProcessSessionRequestsWaitingForRuntimeDetection(); + } +} + +void XRSystem::ResolveIsSessionSupportedRequests() { + // Resolve promises returned by IsSessionSupported + gfx::VRManagerChild* vm = gfx::VRManagerChild::Get(); + nsTArray<RefPtr<IsSessionSupportedRequest>> isSessionSupportedRequests( + std::move(mIsSessionSupportedRequests)); + bool featurePolicyBlocked = FeaturePolicyBlocked(); + + for (RefPtr<IsSessionSupportedRequest>& request : + isSessionSupportedRequests) { + if (featurePolicyBlocked) { + request->mPromise->MaybeRejectWithSecurityError( + "The xr-spatial-tracking feature policy is required."); + continue; + } + + bool supported = false; + switch (request->GetSessionMode()) { + case XRSessionMode::Immersive_vr: + supported = vm->RuntimeSupportsVR(); + break; + case XRSessionMode::Immersive_ar: + supported = vm->RuntimeSupportsAR(); + break; + default: + break; + } + request->mPromise->MaybeResolve(supported); + } +} + +void XRSystem::ProcessSessionRequestsWaitingForRuntimeDetection() { + bool alreadyRequestedPermission = + !mRequestSessionRequestsWaitingForEnumeration.IsEmpty(); + bool featurePolicyBlocked = FeaturePolicyBlocked(); + gfx::VRManagerChild* vm = gfx::VRManagerChild::Get(); + + nsTArray<RefPtr<RequestSessionRequest>> sessionRequests( + std::move(mRequestSessionRequestsWaitingForRuntimeDetection)); + + for (RefPtr<RequestSessionRequest>& request : sessionRequests) { + bool compatibleRuntime = false; + switch (request->GetSessionMode()) { + case XRSessionMode::Immersive_vr: + compatibleRuntime = vm->RuntimeSupportsVR(); + break; + case XRSessionMode::Immersive_ar: + compatibleRuntime = vm->RuntimeSupportsAR(); + break; + case XRSessionMode::Inline: + compatibleRuntime = vm->RuntimeSupportsInline(); + break; + default: + break; + } + if (!compatibleRuntime) { + // If none of the requested sessions are supported by a + // runtime, early exit without showing a permission prompt. + if (CancelHardwareRequest(request)) { + request->mPromise->MaybeRejectWithNotSupportedError( + "A device supporting the required XRSession configuration " + "could not be found."); + } + continue; + } + if (featurePolicyBlocked) { + // Don't show a permission prompt if blocked by feature policy. + if (CancelHardwareRequest(request)) { + request->mPromise->MaybeRejectWithSecurityError( + "The xr-spatial-tracking feature policy is required."); + } + continue; + } + // To continue evaluating this request, it must wait for hardware + // enumeration and permission request. + mRequestSessionRequestsWaitingForEnumeration.AppendElement(request); + } + + if (!mRequestSessionRequestsWaitingForEnumeration.IsEmpty() && + !alreadyRequestedPermission) { + /** + * Inline sessions will require only a user gesture + * and should not trigger XR permission UI. + * This is not a problem currently, as the only platforms + * allowing xr-spatial-tracking for inline sessions do not + * present a modal XR permission UI. (eg. Android Firefox Reality) + */ + nsGlobalWindowInner* win = nsGlobalWindowInner::Cast(GetOwner()); + win->RequestXRPermission(); + } +} + +void XRSystem::NotifyVRDisplayMounted(uint32_t aDisplayID) {} +void XRSystem::NotifyVRDisplayUnmounted(uint32_t aDisplayID) {} + +void XRSystem::NotifyVRDisplayConnect(uint32_t aDisplayID) { + DispatchTrustedEvent(u"devicechange"_ns); +} + +void XRSystem::NotifyVRDisplayDisconnect(uint32_t aDisplayID) { + DispatchTrustedEvent(u"devicechange"_ns); +} + +void XRSystem::NotifyVRDisplayPresentChange(uint32_t aDisplayID) {} +void XRSystem::NotifyPresentationGenerationChanged(uint32_t aDisplayID) { + if (mActiveImmersiveSession) { + mActiveImmersiveSession->ExitPresent(); + } +} +bool XRSystem::GetStopActivityStatus() const { return true; } + +RequestSessionRequest::RequestSessionRequest( + XRSessionMode aSessionMode, uint32_t aPresentationGroup, Promise* aPromise, + const nsTArray<XRReferenceSpaceType>& aRequiredReferenceSpaceTypes, + const nsTArray<XRReferenceSpaceType>& aOptionalReferenceSpaceTypes) + : mPromise(aPromise), + mSessionMode(aSessionMode), + mPresentationGroup(aPresentationGroup), + mRequiredReferenceSpaceTypes(aRequiredReferenceSpaceTypes.Clone()), + mOptionalReferenceSpaceTypes(aOptionalReferenceSpaceTypes.Clone()) {} + +bool RequestSessionRequest::ResolveSupport( + const gfx::VRDisplayClient* aDisplay, + nsTArray<XRReferenceSpaceType>& aEnabledReferenceSpaceTypes) const { + if (aDisplay) { + if (!aDisplay->GetIsConnected()) { + return false; + } + if ((aDisplay->GetDisplayInfo().GetPresentingGroups() & + mPresentationGroup) != 0) { + return false; + } + + const gfx::VRDisplayInfo& info = aDisplay->GetDisplayInfo(); + switch (mSessionMode) { + case XRSessionMode::Inline: + if (!bool(info.mDisplayState.capabilityFlags & + gfx::VRDisplayCapabilityFlags::Cap_Inline)) { + return false; + } + break; + case XRSessionMode::Immersive_vr: + if (!bool(info.mDisplayState.capabilityFlags & + gfx::VRDisplayCapabilityFlags::Cap_ImmersiveVR)) { + return false; + } + break; + case XRSessionMode::Immersive_ar: + if (!bool(info.mDisplayState.capabilityFlags & + gfx::VRDisplayCapabilityFlags::Cap_ImmersiveAR)) { + return false; + } + break; + default: + break; + } + } else if (mSessionMode != XRSessionMode::Inline) { + // If we don't have a device, we can only support inline sessions + return false; + } + + // All sessions support XRReferenceSpaceType::Viewer by default + aEnabledReferenceSpaceTypes.AppendElement(XRReferenceSpaceType::Viewer); + + // Immersive sessions support XRReferenceSpaceType::Local by default + if (IsImmersive()) { + aEnabledReferenceSpaceTypes.AppendElement(XRReferenceSpaceType::Local); + } + + for (XRReferenceSpaceType type : mRequiredReferenceSpaceTypes) { + if (aDisplay) { + if (!aDisplay->IsReferenceSpaceTypeSupported(type)) { + return false; + } + } else if (type != XRReferenceSpaceType::Viewer) { + // If we don't have a device, We only support + // XRReferenceSpaceType::Viewer + return false; + } + if (!aEnabledReferenceSpaceTypes.Contains(type)) { + aEnabledReferenceSpaceTypes.AppendElement(type); + } + } + if (aDisplay) { + for (XRReferenceSpaceType type : mOptionalReferenceSpaceTypes) { + if (aDisplay->IsReferenceSpaceTypeSupported(type) && + !aEnabledReferenceSpaceTypes.Contains(type)) { + aEnabledReferenceSpaceTypes.AppendElement(type); + } + } + } + return true; +} + +bool RequestSessionRequest::IsImmersive() const { + return (mSessionMode == XRSessionMode::Immersive_vr || + mSessionMode == XRSessionMode::Immersive_ar); +} + +bool RequestSessionRequest::WantsHardware() const { + for (XRReferenceSpaceType type : mOptionalReferenceSpaceTypes) { + // Any XRReferenceSpaceType other than Viewer requires hardware + if (type != XRReferenceSpaceType::Viewer) { + return true; + } + } + return NeedsHardware(); +} + +bool RequestSessionRequest::NeedsHardware() const { + for (XRReferenceSpaceType type : mRequiredReferenceSpaceTypes) { + // Any XRReferenceSpaceType other than Viewer requires hardware + if (type != XRReferenceSpaceType::Viewer) { + return true; + } + } + return false; +} + +XRSessionMode RequestSessionRequest::GetSessionMode() const { + return mSessionMode; +} + +uint32_t RequestSessionRequest::GetPresentationGroup() const { + return mPresentationGroup; +} + +//////////////////////////////////////////////////////////////////////////////// +// IsSessionSupportedRequest cycle collection +NS_IMPL_CYCLE_COLLECTION(IsSessionSupportedRequest, mPromise) + +XRSessionMode IsSessionSupportedRequest::GetSessionMode() const { + return mSessionMode; +} + +//////////////////////////////////////////////////////////////////////////////// +// XRRequestSessionPermissionRequest cycle collection +NS_IMPL_CYCLE_COLLECTION_INHERITED(XRRequestSessionPermissionRequest, + ContentPermissionRequestBase) + +NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0( + XRRequestSessionPermissionRequest, ContentPermissionRequestBase) + +XRRequestSessionPermissionRequest::XRRequestSessionPermissionRequest( + nsPIDOMWindowInner* aWindow, nsIPrincipal* aNodePrincipal, + AllowCallback&& aAllowCallback, + AllowAnySiteCallback&& aAllowAnySiteCallback, + CancelCallback&& aCancelCallback) + : ContentPermissionRequestBase(aNodePrincipal, aWindow, "dom.xr"_ns, + "xr"_ns), + mAllowCallback(std::move(aAllowCallback)), + mAllowAnySiteCallback(std::move(aAllowAnySiteCallback)), + mCancelCallback(std::move(aCancelCallback)), + mCallbackCalled(false) { + mPermissionRequests.AppendElement( + PermissionRequest(mType, nsTArray<nsString>())); +} + +XRRequestSessionPermissionRequest::~XRRequestSessionPermissionRequest() { + Cancel(); +} + +NS_IMETHODIMP +XRRequestSessionPermissionRequest::Cancel() { + if (!mCallbackCalled) { + mCallbackCalled = true; + mCancelCallback(); + } + return NS_OK; +} + +NS_IMETHODIMP +XRRequestSessionPermissionRequest::Allow(JS::Handle<JS::Value> aChoices) { + nsTArray<PermissionChoice> choices; + nsresult rv = TranslateChoices(aChoices, mPermissionRequests, choices); + if (NS_FAILED(rv)) { + return rv; + } + + // There is no support to allow grants automatically from the prompting code + // path. + + if (!mCallbackCalled) { + mCallbackCalled = true; + if (choices.Length() == 1 && + choices[0].choice().EqualsLiteral("allow-on-any-site")) { + mAllowAnySiteCallback(); + } else if (choices.Length() == 1 && + choices[0].choice().EqualsLiteral("allow")) { + mAllowCallback(); + } + } + return NS_OK; +} + +already_AddRefed<XRRequestSessionPermissionRequest> +XRRequestSessionPermissionRequest::Create( + nsPIDOMWindowInner* aWindow, AllowCallback&& aAllowCallback, + AllowAnySiteCallback&& aAllowAnySiteCallback, + CancelCallback&& aCancelCallback) { + if (!aWindow) { + return nullptr; + } + nsGlobalWindowInner* win = nsGlobalWindowInner::Cast(aWindow); + if (!win->GetPrincipal()) { + return nullptr; + } + RefPtr<XRRequestSessionPermissionRequest> request = + new XRRequestSessionPermissionRequest( + aWindow, win->GetPrincipal(), std::move(aAllowCallback), + std::move(aAllowAnySiteCallback), std::move(aCancelCallback)); + return request.forget(); +} + +//////////////////////////////////////////////////////////////////////////////// +// RequestSessionRequest cycle collection +NS_IMPL_CYCLE_COLLECTION(RequestSessionRequest, mPromise) + +} // namespace mozilla::dom |