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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/vr/navigator_vr.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "third_party/blink/public/mojom/feature_policy/feature_policy.mojom-blink.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/frame/deprecation.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/modules/vr/vr_controller.h"
#include "third_party/blink/renderer/modules/vr/vr_pose.h"
#include "third_party/blink/renderer/modules/xr/navigator_xr.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
namespace blink {
namespace {
const char kFeaturePolicyBlockedMessage[] =
"Access to the feature \"vr\" is disallowed by feature policy.";
const char kNotAssociatedWithDocumentMessage[] =
"The object is no longer associated with a document.";
const char kCannotUseBothNewAndOldAPIMessage[] =
"Cannot use navigator.getVRDisplays if WebXR is already in use.";
} // namespace
bool NavigatorVR::HasWebVrBeenUsed(Document& document) {
if (!document.GetFrame())
return false;
Navigator& navigator = *document.GetFrame()->DomWindow()->navigator();
NavigatorVR* supplement = Supplement<Navigator>::From<NavigatorVR>(navigator);
if (!supplement) {
// No supplement means WebVR has not been used.
return false;
}
return NavigatorVR::From(navigator).did_use_webvr_;
}
NavigatorVR* NavigatorVR::From(Document& document) {
if (!document.GetFrame())
return nullptr;
Navigator& navigator = *document.GetFrame()->DomWindow()->navigator();
return &From(navigator);
}
NavigatorVR& NavigatorVR::From(Navigator& navigator) {
NavigatorVR* supplement = Supplement<Navigator>::From<NavigatorVR>(navigator);
if (!supplement) {
supplement = MakeGarbageCollected<NavigatorVR>(navigator);
ProvideTo(navigator, supplement);
}
return *supplement;
}
ScriptPromise NavigatorVR::getVRDisplays(ScriptState* script_state,
Navigator& navigator) {
if (!navigator.GetFrame()) {
return ScriptPromise::RejectWithDOMException(
script_state,
MakeGarbageCollected<DOMException>(DOMExceptionCode::kInvalidStateError,
kNotAssociatedWithDocumentMessage));
}
return NavigatorVR::From(navigator).getVRDisplays(script_state);
}
ScriptPromise NavigatorVR::getVRDisplays(ScriptState* script_state) {
did_use_webvr_ = true;
auto* document = GetDocument();
if (!document) {
return ScriptPromise::RejectWithDOMException(
script_state,
MakeGarbageCollected<DOMException>(DOMExceptionCode::kInvalidStateError,
kNotAssociatedWithDocumentMessage));
}
if (!did_log_getVRDisplays_ && document->IsInMainFrame()) {
did_log_getVRDisplays_ = true;
ukm::builders::XR_WebXR(document->UkmSourceID())
.SetDidRequestAvailableDevices(1)
.Record(document->UkmRecorder());
}
if (!document->IsFeatureEnabled(mojom::FeaturePolicyFeature::kWebVr,
ReportOptions::kReportOnFailure)) {
return ScriptPromise::RejectWithDOMException(
script_state,
MakeGarbageCollected<DOMException>(DOMExceptionCode::kSecurityError,
kFeaturePolicyBlockedMessage));
}
// Block developers from using WebVR if they've already used WebXR.
if (NavigatorXR::HasWebXrBeenUsed(*document)) {
return ScriptPromise::RejectWithDOMException(
script_state,
MakeGarbageCollected<DOMException>(DOMExceptionCode::kInvalidStateError,
kCannotUseBothNewAndOldAPIMessage));
}
Deprecation::CountDeprecation(*document, WebFeature::kVRGetDisplays);
ExecutionContext* execution_context = ExecutionContext::From(script_state);
if (!execution_context->IsSecureContext())
UseCounter::Count(*document, WebFeature::kVRGetDisplaysInsecureOrigin);
Platform::Current()->RecordRapporURL("VR.WebVR.GetDisplays", document->Url());
auto* resolver = MakeGarbageCollected<ScriptPromiseResolver>(script_state);
ScriptPromise promise = resolver->Promise();
Controller()->GetDisplays(resolver);
return promise;
}
VRController* NavigatorVR::Controller() {
if (!GetSupplementable()->GetFrame())
return nullptr;
if (!controller_) {
controller_ = MakeGarbageCollected<VRController>(this);
controller_->SetListeningForActivate(focused_ && listening_for_activate_);
controller_->FocusChanged();
}
return controller_;
}
Document* NavigatorVR::GetDocument() {
if (!GetSupplementable() || !GetSupplementable()->GetFrame())
return nullptr;
return GetSupplementable()->GetFrame()->GetDocument();
}
void NavigatorVR::Trace(blink::Visitor* visitor) {
visitor->Trace(controller_);
Supplement<Navigator>::Trace(visitor);
}
NavigatorVR::NavigatorVR(Navigator& navigator)
: Supplement<Navigator>(navigator),
FocusChangedObserver(navigator.GetFrame()->GetPage()) {
navigator.GetFrame()->DomWindow()->RegisterEventListenerObserver(this);
FocusedFrameChanged();
}
NavigatorVR::~NavigatorVR() = default;
const char NavigatorVR::kSupplementName[] = "NavigatorVR";
void NavigatorVR::EnqueueVREvent(VRDisplayEvent* event) {
if (!GetSupplementable()->GetFrame())
return;
GetSupplementable()->GetFrame()->DomWindow()->EnqueueWindowEvent(
*event, TaskType::kMiscPlatformAPI);
}
void NavigatorVR::DispatchVREvent(VRDisplayEvent* event) {
if (!(GetSupplementable()->GetFrame()))
return;
LocalDOMWindow* window = GetSupplementable()->GetFrame()->DomWindow();
DCHECK(window);
event->SetTarget(window);
window->DispatchEvent(*event);
}
void NavigatorVR::FocusedFrameChanged() {
bool focused = IsFrameFocused(GetSupplementable()->GetFrame());
if (focused == focused_)
return;
focused_ = focused;
if (controller_) {
controller_->SetListeningForActivate(listening_for_activate_ && focused);
controller_->FocusChanged();
}
}
void NavigatorVR::DidAddEventListener(LocalDOMWindow* window,
const AtomicString& event_type) {
if (event_type == event_type_names::kVrdisplayactivate) {
listening_for_activate_ = true;
Controller()->SetListeningForActivate(focused_);
} else if (event_type == event_type_names::kVrdisplayconnect) {
// If the page is listening for connection events make sure we've created a
// controller so that we'll be notified of new devices.
Controller();
}
}
void NavigatorVR::DidRemoveEventListener(LocalDOMWindow* window,
const AtomicString& event_type) {
if (event_type == event_type_names::kVrdisplayactivate &&
!window->HasEventListeners(event_type_names::kVrdisplayactivate)) {
listening_for_activate_ = false;
Controller()->SetListeningForActivate(false);
}
}
void NavigatorVR::DidRemoveAllEventListeners(LocalDOMWindow* window) {
if (!controller_)
return;
controller_->SetListeningForActivate(false);
listening_for_activate_ = false;
}
} // namespace blink
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