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/* -*- 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 "VREventObserver.h"
#include "nsContentUtils.h"
#include "nsGlobalWindow.h"
#include "VRManagerChild.h"
namespace mozilla {
namespace dom {
using namespace gfx;
/**
* This class is used by nsGlobalWindow to implement window.onvrdisplayconnected,
* window.onvrdisplaydisconnected, and window.onvrdisplaypresentchange.
*/
VREventObserver::VREventObserver(nsGlobalWindow* aGlobalWindow)
: mWindow(aGlobalWindow)
{
MOZ_ASSERT(aGlobalWindow && aGlobalWindow->IsInnerWindow());
VRManagerChild* vmc = VRManagerChild::Get();
if (vmc) {
vmc->AddListener(this);
}
}
VREventObserver::~VREventObserver()
{
VRManagerChild* vmc = VRManagerChild::Get();
if (vmc) {
vmc->RemoveListener(this);
}
}
void
VREventObserver::NotifyVRDisplayConnect()
{
/**
* We do not call nsGlobalWindow::NotifyActiveVRDisplaysChanged here, as we
* can assume that a newly enumerated display is not presenting WebVR
* content.
*/
if (mWindow->AsInner()->IsCurrentInnerWindow()) {
MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
mWindow->GetOuterWindow()->DispatchCustomEvent(
NS_LITERAL_STRING("vrdisplayconnected"));
}
}
void
VREventObserver::NotifyVRDisplayDisconnect()
{
if (mWindow->AsInner()->IsCurrentInnerWindow()) {
mWindow->NotifyActiveVRDisplaysChanged();
MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
mWindow->GetOuterWindow()->DispatchCustomEvent(
NS_LITERAL_STRING("vrdisplaydisconnected"));
}
}
void
VREventObserver::NotifyVRDisplayPresentChange()
{
if (mWindow->AsInner()->IsCurrentInnerWindow()) {
mWindow->NotifyActiveVRDisplaysChanged();
MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
mWindow->GetOuterWindow()->DispatchCustomEvent(
NS_LITERAL_STRING("vrdisplaypresentchange"));
}
}
} // namespace dom
} // namespace mozilla
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