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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.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_VR_NAVIGATOR_VR_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_VR_NAVIGATOR_VR_H_
#include "base/macros.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/navigator.h"
#include "third_party/blink/renderer/core/page/focus_changed_observer.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/vr/vr_display.h"
#include "third_party/blink/renderer/modules/vr/vr_display_event.h"
#include "third_party/blink/renderer/platform/supplementable.h"
namespace blink {
class Document;
class VRController;
class MODULES_EXPORT NavigatorVR final
: public GarbageCollectedFinalized<NavigatorVR>,
public Supplement<Navigator>,
public LocalDOMWindow::EventListenerObserver,
public FocusChangedObserver {
USING_GARBAGE_COLLECTED_MIXIN(NavigatorVR);
public:
static const char kSupplementName[];
// Returns whether WebVR has beeen used in the document.
// If no supplement has been created, it returns false without creating one.
// This allows it to be used in cases where creating objects is not allowed,
// such as within NavigatorGamepad::DidAddEventListener().
static bool HasWebVrBeenUsed(Document&);
static NavigatorVR* From(Document&);
static NavigatorVR& From(Navigator&);
explicit NavigatorVR(Navigator&);
~NavigatorVR() override;
// Legacy API
static ScriptPromise getVRDisplays(ScriptState*, Navigator&);
ScriptPromise getVRDisplays(ScriptState*);
VRController* Controller();
Document* GetDocument();
bool IsFocused() const { return focused_; }
// Queues up event to be fired soon.
void EnqueueVREvent(VRDisplayEvent*);
// Dispatches an event immediately.
void DispatchVREvent(VRDisplayEvent*);
// Inherited from FocusChangedObserver.
void FocusedFrameChanged() override;
// Inherited from LocalDOMWindow::EventListenerObserver.
void DidAddEventListener(LocalDOMWindow*, const AtomicString&) override;
void DidRemoveEventListener(LocalDOMWindow*, const AtomicString&) override;
void DidRemoveAllEventListeners(LocalDOMWindow*) override;
void Trace(blink::Visitor*) override;
private:
friend class VRDisplay;
friend class VRGetDevicesCallback;
void FireVRDisplayPresentChange(VRDisplay*);
Member<VRController> controller_;
// Whether this page is listening for vrdisplayactivate event.
bool listening_for_activate_ = false;
bool focused_ = false;
bool did_use_webvr_ = false;
// Metrics data - indicates whether we've already measured this data so we
// don't do it every frame.
bool did_log_getVRDisplays_ = false;
DISALLOW_COPY_AND_ASSIGN(NavigatorVR);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_VR_NAVIGATOR_VR_H_
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