gecko-dev/dom/webauthn/WebAuthnManagerBase.cpp

153 строки
4.0 KiB
C++

/* -*- 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/WebAuthnManagerBase.h"
#include "mozilla/dom/WebAuthnTransactionChild.h"
#include "mozilla/dom/Event.h"
#include "nsGlobalWindowInner.h"
#include "nsPIWindowRoot.h"
namespace mozilla {
namespace dom {
NS_NAMED_LITERAL_STRING(kDeactivateEvent, "deactivate");
NS_NAMED_LITERAL_STRING(kVisibilityChange, "visibilitychange");
WebAuthnManagerBase::WebAuthnManagerBase(nsPIDOMWindowInner* aParent)
: mParent(aParent)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aParent);
}
WebAuthnManagerBase::~WebAuthnManagerBase()
{
MOZ_ASSERT(NS_IsMainThread());
}
/***********************************************************************
* IPC Protocol Implementation
**********************************************************************/
bool
WebAuthnManagerBase::MaybeCreateBackgroundActor()
{
MOZ_ASSERT(NS_IsMainThread());
if (mChild) {
return true;
}
PBackgroundChild* actorChild = BackgroundChild::GetOrCreateForCurrentThread();
if (NS_WARN_IF(!actorChild)) {
return false;
}
RefPtr<WebAuthnTransactionChild> mgr(new WebAuthnTransactionChild(this));
PWebAuthnTransactionChild* constructedMgr =
actorChild->SendPWebAuthnTransactionConstructor(mgr);
if (NS_WARN_IF(!constructedMgr)) {
return false;
}
MOZ_ASSERT(constructedMgr == mgr);
mChild = mgr.forget();
return true;
}
void
WebAuthnManagerBase::ActorDestroyed()
{
MOZ_ASSERT(NS_IsMainThread());
mChild = nullptr;
}
/***********************************************************************
* Event Handling
**********************************************************************/
void
WebAuthnManagerBase::ListenForVisibilityEvents()
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsPIDOMWindowOuter> outer = mParent->GetOuterWindow();
if (NS_WARN_IF(!outer)) {
return;
}
nsCOMPtr<EventTarget> windowRoot = outer->GetTopWindowRoot();
if (NS_WARN_IF(!windowRoot)) {
return;
}
nsresult rv = windowRoot->AddEventListener(kDeactivateEvent, this,
/* use capture */ true,
/* wants untrusted */ false);
Unused << NS_WARN_IF(NS_FAILED(rv));
rv = windowRoot->AddEventListener(kVisibilityChange, this,
/* use capture */ true,
/* wants untrusted */ false);
Unused << NS_WARN_IF(NS_FAILED(rv));
}
void
WebAuthnManagerBase::StopListeningForVisibilityEvents()
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsPIDOMWindowOuter> outer = mParent->GetOuterWindow();
if (NS_WARN_IF(!outer)) {
return;
}
nsCOMPtr<EventTarget> windowRoot = outer->GetTopWindowRoot();
if (NS_WARN_IF(!windowRoot)) {
return;
}
windowRoot->RemoveEventListener(kDeactivateEvent, this,
/* use capture */ true);
windowRoot->RemoveEventListener(kVisibilityChange, this,
/* use capture */ true);
}
NS_IMETHODIMP
WebAuthnManagerBase::HandleEvent(Event* aEvent)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aEvent);
nsAutoString type;
aEvent->GetType(type);
if (!type.Equals(kDeactivateEvent) && !type.Equals(kVisibilityChange)) {
return NS_ERROR_FAILURE;
}
// The "deactivate" event on the root window has no
// "current inner window" and thus GetTarget() is always null.
if (type.Equals(kVisibilityChange)) {
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aEvent->GetTarget());
if (NS_WARN_IF(!doc) || !doc->Hidden()) {
return NS_OK;
}
nsGlobalWindowInner* win = nsGlobalWindowInner::Cast(doc->GetInnerWindow());
if (NS_WARN_IF(!win) || !win->IsTopInnerWindow()) {
return NS_OK;
}
}
CancelTransaction(NS_ERROR_DOM_ABORT_ERR);
return NS_OK;
}
}
}