gecko-dev/dom/inputport/InputPortManager.cpp

216 строки
5.7 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 "InputPortServiceFactory.h"
#include "mozilla/dom/InputPort.h"
#include "mozilla/dom/InputPortManager.h"
#include "mozilla/dom/InputPortManagerBinding.h"
#include "mozilla/dom/Promise.h"
#include "nsArrayUtils.h"
#include "nsIInputPortService.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(InputPortManager,
mParent,
mInputPortService,
mPendingGetInputPortsPromises,
mInputPorts)
NS_IMPL_CYCLE_COLLECTING_ADDREF(InputPortManager)
NS_IMPL_CYCLE_COLLECTING_RELEASE(InputPortManager)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(InputPortManager)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_ENTRY(nsIInputPortServiceCallback)
NS_INTERFACE_MAP_END
InputPortManager::InputPortManager(nsPIDOMWindowInner* aWindow)
: mParent(aWindow)
, mIsReady(false)
{
}
InputPortManager::~InputPortManager()
{
}
/* static */ already_AddRefed<InputPortManager>
InputPortManager::Create(nsPIDOMWindowInner* aWindow, ErrorResult& aRv)
{
RefPtr<InputPortManager> manager = new InputPortManager(aWindow);
manager->Init(aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return manager.forget();
}
void
InputPortManager::Init(ErrorResult& aRv)
{
mInputPortService = InputPortServiceFactory::AutoCreateInputPortService();
if (NS_WARN_IF(!mInputPortService)) {
aRv.Throw(NS_ERROR_FAILURE);
return;
}
aRv = mInputPortService->GetInputPorts(this);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
}
nsPIDOMWindowInner*
InputPortManager::GetParentObject() const
{
return mParent;
}
JSObject*
InputPortManager::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return InputPortManagerBinding::Wrap(aCx, this, aGivenProto);
}
void
InputPortManager::RejectPendingGetInputPortsPromises(nsresult aRv)
{
// Reject pending promises.
uint32_t length = mPendingGetInputPortsPromises.Length();
for(uint32_t i = 0; i < length; i++) {
mPendingGetInputPortsPromises[i]->MaybeReject(aRv);
}
mPendingGetInputPortsPromises.Clear();
}
nsresult
InputPortManager::SetInputPorts(const nsTArray<RefPtr<InputPort>>& aPorts)
{
MOZ_ASSERT(!mIsReady);
// Should be called only when InputPortManager hasn't been ready yet.
if (mIsReady) {
return NS_ERROR_DOM_INVALID_STATE_ERR;
}
mInputPorts = aPorts;
mIsReady = true;
// Resolve pending promises.
uint32_t length = mPendingGetInputPortsPromises.Length();
for(uint32_t i = 0; i < length; i++) {
mPendingGetInputPortsPromises[i]->MaybeResolve(mInputPorts);
}
mPendingGetInputPortsPromises.Clear();
return NS_OK;
}
already_AddRefed<Promise>
InputPortManager::GetInputPorts(ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetParentObject());
MOZ_ASSERT(global);
RefPtr<Promise> promise = Promise::Create(global, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
if (mIsReady) {
promise->MaybeResolve(mInputPorts);
} else {
mPendingGetInputPortsPromises.AppendElement(promise);
}
return promise.forget();
}
NS_IMETHODIMP
InputPortManager::NotifySuccess(nsIArray* aDataList)
{
MOZ_ASSERT(aDataList);
if (!aDataList) {
RejectPendingGetInputPortsPromises(NS_ERROR_DOM_ABORT_ERR);
return NS_ERROR_INVALID_ARG;
}
uint32_t length;
nsresult rv = aDataList->GetLength(&length);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsCOMPtr<nsIInputPortListener> portListener;
rv = mInputPortService->GetInputPortListener(
getter_AddRefs(portListener));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
ErrorResult erv;
nsTArray<RefPtr<InputPort>> ports(length);
for (uint32_t i = 0; i < length; i++) {
nsCOMPtr<nsIInputPortData> portData = do_QueryElementAt(aDataList, i);
if (NS_WARN_IF(!portData)) {
continue;
}
InputPortData* data = static_cast<InputPortData*>(portData.get());
RefPtr<InputPort> port;
switch (data->GetType()) {
case InputPortType::Av:
port = AVInputPort::Create(GetParentObject(), portListener,
portData, erv);
break;
case InputPortType::Displayport:
port = DisplayPortInputPort::Create(GetParentObject(),
portListener, portData, erv);
break;
case InputPortType::Hdmi:
port = HDMIInputPort::Create(GetParentObject(), portListener,
portData, erv);
break;
default:
MOZ_ASSERT_UNREACHABLE("Unknown InputPort type");
break;
}
MOZ_ASSERT(port);
ports.AppendElement(port);
}
if (NS_WARN_IF(erv.Failed())) {
return erv.StealNSResult();
}
erv = SetInputPorts(ports);
return erv.StealNSResult();
}
NS_IMETHODIMP
InputPortManager::NotifyError(uint16_t aErrorCode)
{
switch (aErrorCode) {
case nsIInputPortServiceCallback::INPUTPORT_ERROR_FAILURE:
case nsIInputPortServiceCallback::INPUTPORT_ERROR_INVALID_ARG:
RejectPendingGetInputPortsPromises(NS_ERROR_DOM_ABORT_ERR);
return NS_OK;
case nsIInputPortServiceCallback::INPUTPORT_ERROR_NOT_SUPPORTED:
RejectPendingGetInputPortsPromises(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return NS_OK;
}
RejectPendingGetInputPortsPromises(NS_ERROR_DOM_ABORT_ERR);
return NS_ERROR_ILLEGAL_VALUE;
}
} // namespace dom
} // namespace mozilla