зеркало из https://github.com/mozilla/gecko-dev.git
80 строки
2.1 KiB
C++
80 строки
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "VREventObserver.h"
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#include "nsContentUtils.h"
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#include "nsGlobalWindow.h"
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#include "VRManagerChild.h"
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namespace mozilla {
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namespace dom {
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using namespace gfx;
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/**
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* This class is used by nsGlobalWindow to implement window.onvrdisplayconnected,
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* window.onvrdisplaydisconnected, and window.onvrdisplaypresentchange.
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*/
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VREventObserver::VREventObserver(nsGlobalWindow* aGlobalWindow)
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: mWindow(aGlobalWindow)
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{
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MOZ_ASSERT(aGlobalWindow && aGlobalWindow->IsInnerWindow());
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VRManagerChild* vmc = VRManagerChild::Get();
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if (vmc) {
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vmc->AddListener(this);
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}
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}
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VREventObserver::~VREventObserver()
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{
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VRManagerChild* vmc = VRManagerChild::Get();
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if (vmc) {
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vmc->RemoveListener(this);
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}
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}
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void
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VREventObserver::NotifyVRDisplayConnect()
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{
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/**
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* We do not call nsGlobalWindow::NotifyActiveVRDisplaysChanged here, as we
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* can assume that a newly enumerated display is not presenting WebVR
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* content.
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*/
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if (mWindow->AsInner()->IsCurrentInnerWindow()) {
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MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
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mWindow->GetOuterWindow()->DispatchCustomEvent(
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NS_LITERAL_STRING("vrdisplayconnected"));
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}
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}
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void
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VREventObserver::NotifyVRDisplayDisconnect()
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{
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if (mWindow->AsInner()->IsCurrentInnerWindow()) {
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mWindow->NotifyActiveVRDisplaysChanged();
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MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
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mWindow->GetOuterWindow()->DispatchCustomEvent(
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NS_LITERAL_STRING("vrdisplaydisconnected"));
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}
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}
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void
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VREventObserver::NotifyVRDisplayPresentChange()
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{
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if (mWindow->AsInner()->IsCurrentInnerWindow()) {
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mWindow->NotifyActiveVRDisplaysChanged();
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MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
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mWindow->GetOuterWindow()->DispatchCustomEvent(
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NS_LITERAL_STRING("vrdisplaypresentchange"));
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}
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}
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} // namespace dom
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} // namespace mozilla
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