gecko-dev/dom/browser-element/BrowserElementAudioChannel.cpp

490 строки
14 KiB
C++

/* 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 "BrowserElementAudioChannel.h"
#include "mozilla/Services.h"
#include "mozilla/dom/BrowserElementAudioChannelBinding.h"
#include "mozilla/dom/DOMRequest.h"
#include "mozilla/dom/ToJSValue.h"
#include "AudioChannelService.h"
#include "nsIBrowserElementAPI.h"
#include "nsIDocShell.h"
#include "nsIDOMDOMRequest.h"
#include "nsIObserverService.h"
#include "nsISupportsPrimitives.h"
#include "nsITabParent.h"
#include "nsPIDOMWindow.h"
namespace {
void
AssertIsInMainProcess()
{
MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default);
}
} // anonymous namespace
namespace mozilla {
namespace dom {
NS_IMPL_ADDREF_INHERITED(BrowserElementAudioChannel, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(BrowserElementAudioChannel, DOMEventTargetHelper)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(BrowserElementAudioChannel)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_INHERITED(BrowserElementAudioChannel,
DOMEventTargetHelper,
mFrameLoader,
mFrameWindow,
mTabParent,
mBrowserElementAPI)
BrowserElementAudioChannel::BrowserElementAudioChannel(
nsPIDOMWindow* aWindow,
nsIFrameLoader* aFrameLoader,
nsIBrowserElementAPI* aAPI,
AudioChannel aAudioChannel)
: DOMEventTargetHelper(aWindow)
, mFrameLoader(aFrameLoader)
, mBrowserElementAPI(aAPI)
, mAudioChannel(aAudioChannel)
, mState(eStateUnknown)
{
MOZ_ASSERT(NS_IsMainThread());
AssertIsInMainProcess();
MOZ_ASSERT(mFrameLoader);
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
nsAutoString name;
AudioChannelService::GetAudioChannelString(aAudioChannel, name);
nsAutoCString topic;
topic.Assign("audiochannel-activity-");
topic.Append(NS_ConvertUTF16toUTF8(name));
obs->AddObserver(this, topic.get(), true);
}
}
BrowserElementAudioChannel::~BrowserElementAudioChannel()
{
MOZ_ASSERT(NS_IsMainThread());
AssertIsInMainProcess();
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
nsAutoString name;
AudioChannelService::GetAudioChannelString(mAudioChannel, name);
nsAutoCString topic;
topic.Assign("audiochannel-activity-");
topic.Append(NS_ConvertUTF16toUTF8(name));
obs->RemoveObserver(this, topic.get());
}
}
nsresult
BrowserElementAudioChannel::Initialize()
{
nsCOMPtr<nsIDocShell> docShell;
nsresult rv = mFrameLoader->GetDocShell(getter_AddRefs(docShell));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (docShell) {
nsCOMPtr<nsPIDOMWindow> window = docShell->GetWindow();
if (!window) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDOMWindow> topWindow;
window->GetScriptableTop(getter_AddRefs(topWindow));
mFrameWindow = do_QueryInterface(topWindow);
mFrameWindow = mFrameWindow->GetOuterWindow();
return NS_OK;
}
rv = mFrameLoader->GetTabParent(getter_AddRefs(mTabParent));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
MOZ_ASSERT(mTabParent);
return NS_OK;
}
JSObject*
BrowserElementAudioChannel::WrapObject(JSContext *aCx,
JS::Handle<JSObject*> aGivenProto)
{
return BrowserElementAudioChannelBinding::Wrap(aCx, this, aGivenProto);
}
AudioChannel
BrowserElementAudioChannel::Name() const
{
MOZ_ASSERT(NS_IsMainThread());
AssertIsInMainProcess();
return mAudioChannel;
}
namespace {
class BaseRunnable : public nsRunnable
{
protected:
nsCOMPtr<nsPIDOMWindow> mParentWindow;
nsCOMPtr<nsPIDOMWindow> mFrameWindow;
nsRefPtr<DOMRequest> mRequest;
AudioChannel mAudioChannel;
virtual void DoWork(AudioChannelService* aService,
JSContext* aCx) = 0;
public:
BaseRunnable(nsPIDOMWindow* aParentWindow, nsPIDOMWindow* aFrameWindow,
DOMRequest* aRequest, AudioChannel aAudioChannel)
: mParentWindow(aParentWindow)
, mFrameWindow(aFrameWindow)
, mRequest(aRequest)
, mAudioChannel(aAudioChannel)
{}
NS_IMETHODIMP Run() override
{
nsRefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
MOZ_ASSERT(service);
AutoJSAPI jsapi;
if (!jsapi.Init(mParentWindow)) {
mRequest->FireError(NS_ERROR_FAILURE);
return NS_OK;
}
DoWork(service, jsapi.cx());
return NS_OK;
}
};
class GetVolumeRunnable final : public BaseRunnable
{
public:
GetVolumeRunnable(nsPIDOMWindow* aParentWindow, nsPIDOMWindow* aFrameWindow,
DOMRequest* aRequest, AudioChannel aAudioChannel)
: BaseRunnable(aParentWindow, aFrameWindow, aRequest, aAudioChannel)
{}
protected:
virtual void DoWork(AudioChannelService* aService, JSContext* aCx) override
{
float volume = aService->GetAudioChannelVolume(mFrameWindow, mAudioChannel);
JS::Rooted<JS::Value> value(aCx);
if (!ToJSValue(aCx, volume, &value)) {
mRequest->FireError(NS_ERROR_FAILURE);
return;
}
mRequest->FireSuccess(value);
}
};
class GetMutedRunnable final : public BaseRunnable
{
public:
GetMutedRunnable(nsPIDOMWindow* aParentWindow, nsPIDOMWindow* aFrameWindow,
DOMRequest* aRequest, AudioChannel aAudioChannel)
: BaseRunnable(aParentWindow, aFrameWindow, aRequest, aAudioChannel)
{}
protected:
virtual void DoWork(AudioChannelService* aService, JSContext* aCx) override
{
bool muted = aService->GetAudioChannelMuted(mFrameWindow, mAudioChannel);
JS::Rooted<JS::Value> value(aCx);
if (!ToJSValue(aCx, muted, &value)) {
mRequest->FireError(NS_ERROR_FAILURE);
return;
}
mRequest->FireSuccess(value);
}
};
class IsActiveRunnable final : public BaseRunnable
{
bool mActive;
bool mValueKnown;
public:
IsActiveRunnable(nsPIDOMWindow* aParentWindow, nsPIDOMWindow* aFrameWindow,
DOMRequest* aRequest, AudioChannel aAudioChannel,
bool aActive)
: BaseRunnable(aParentWindow, aFrameWindow, aRequest, aAudioChannel)
, mActive(aActive)
, mValueKnown(true)
{}
IsActiveRunnable(nsPIDOMWindow* aParentWindow, nsPIDOMWindow* aFrameWindow,
DOMRequest* aRequest, AudioChannel aAudioChannel)
: BaseRunnable(aParentWindow, aFrameWindow, aRequest, aAudioChannel)
, mActive(true)
, mValueKnown(false)
{}
protected:
virtual void DoWork(AudioChannelService* aService, JSContext* aCx) override
{
if (!mValueKnown) {
mActive = aService->IsAudioChannelActive(mFrameWindow, mAudioChannel);
}
JS::Rooted<JS::Value> value(aCx);
if (!ToJSValue(aCx, mActive, &value)) {
mRequest->FireError(NS_ERROR_FAILURE);
return;
}
mRequest->FireSuccess(value);
}
};
class FireSuccessRunnable final : public BaseRunnable
{
public:
FireSuccessRunnable(nsPIDOMWindow* aParentWindow, nsPIDOMWindow* aFrameWindow,
DOMRequest* aRequest, AudioChannel aAudioChannel)
: BaseRunnable(aParentWindow, aFrameWindow, aRequest, aAudioChannel)
{}
protected:
virtual void DoWork(AudioChannelService* aService, JSContext* aCx) override
{
JS::Rooted<JS::Value> value(aCx);
mRequest->FireSuccess(value);
}
};
} // anonymous namespace
already_AddRefed<dom::DOMRequest>
BrowserElementAudioChannel::GetVolume(ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
AssertIsInMainProcess();
if (!mFrameWindow) {
nsCOMPtr<nsIDOMDOMRequest> request;
aRv = mBrowserElementAPI->GetAudioChannelVolume((uint32_t)mAudioChannel,
getter_AddRefs(request));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return request.forget().downcast<DOMRequest>();
}
nsRefPtr<DOMRequest> domRequest = new DOMRequest(GetOwner());
nsCOMPtr<nsIRunnable> runnable =
new GetVolumeRunnable(GetOwner(), mFrameWindow, domRequest, mAudioChannel);
NS_DispatchToMainThread(runnable);
return domRequest.forget();
}
already_AddRefed<dom::DOMRequest>
BrowserElementAudioChannel::SetVolume(float aVolume, ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
AssertIsInMainProcess();
if (!mFrameWindow) {
nsCOMPtr<nsIDOMDOMRequest> request;
aRv = mBrowserElementAPI->SetAudioChannelVolume((uint32_t)mAudioChannel,
aVolume,
getter_AddRefs(request));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return request.forget().downcast<DOMRequest>();
}
nsRefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
MOZ_ASSERT(service);
service->SetAudioChannelVolume(mFrameWindow, mAudioChannel, aVolume);
nsRefPtr<DOMRequest> domRequest = new DOMRequest(GetOwner());
nsCOMPtr<nsIRunnable> runnable = new FireSuccessRunnable(GetOwner(),
mFrameWindow,
domRequest,
mAudioChannel);
NS_DispatchToMainThread(runnable);
return domRequest.forget();
}
already_AddRefed<dom::DOMRequest>
BrowserElementAudioChannel::GetMuted(ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
AssertIsInMainProcess();
if (!mFrameWindow) {
nsCOMPtr<nsIDOMDOMRequest> request;
aRv = mBrowserElementAPI->GetAudioChannelMuted((uint32_t)mAudioChannel,
getter_AddRefs(request));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return request.forget().downcast<DOMRequest>();
}
nsRefPtr<DOMRequest> domRequest = new DOMRequest(GetOwner());
nsCOMPtr<nsIRunnable> runnable =
new GetMutedRunnable(GetOwner(), mFrameWindow, domRequest, mAudioChannel);
NS_DispatchToMainThread(runnable);
return domRequest.forget();
}
already_AddRefed<dom::DOMRequest>
BrowserElementAudioChannel::SetMuted(bool aMuted, ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
AssertIsInMainProcess();
if (!mFrameWindow) {
nsCOMPtr<nsIDOMDOMRequest> request;
aRv = mBrowserElementAPI->SetAudioChannelMuted((uint32_t)mAudioChannel,
aMuted,
getter_AddRefs(request));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return request.forget().downcast<DOMRequest>();
}
nsRefPtr<AudioChannelService> service = AudioChannelService::GetOrCreate();
MOZ_ASSERT(service);
service->SetAudioChannelMuted(mFrameWindow, mAudioChannel, aMuted);
nsRefPtr<DOMRequest> domRequest = new DOMRequest(GetOwner());
nsCOMPtr<nsIRunnable> runnable = new FireSuccessRunnable(GetOwner(),
mFrameWindow,
domRequest,
mAudioChannel);
NS_DispatchToMainThread(runnable);
return domRequest.forget();
}
already_AddRefed<dom::DOMRequest>
BrowserElementAudioChannel::IsActive(ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread());
AssertIsInMainProcess();
if (mState != eStateUnknown) {
nsRefPtr<DOMRequest> domRequest = new DOMRequest(GetOwner());
nsCOMPtr<nsIRunnable> runnable =
new IsActiveRunnable(GetOwner(), mFrameWindow, domRequest, mAudioChannel,
mState == eStateActive);
NS_DispatchToMainThread(runnable);
return domRequest.forget();
}
if (!mFrameWindow) {
nsCOMPtr<nsIDOMDOMRequest> request;
aRv = mBrowserElementAPI->IsAudioChannelActive((uint32_t)mAudioChannel,
getter_AddRefs(request));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return request.forget().downcast<DOMRequest>();
}
nsRefPtr<DOMRequest> domRequest = new DOMRequest(GetOwner());
nsCOMPtr<nsIRunnable> runnable =
new IsActiveRunnable(GetOwner(), mFrameWindow, domRequest, mAudioChannel);
NS_DispatchToMainThread(runnable);
return domRequest.forget();
}
NS_IMETHODIMP
BrowserElementAudioChannel::Observe(nsISupports* aSubject, const char* aTopic,
const char16_t* aData)
{
nsAutoString name;
AudioChannelService::GetAudioChannelString(mAudioChannel, name);
nsAutoCString topic;
topic.Assign("audiochannel-activity-");
topic.Append(NS_ConvertUTF16toUTF8(name));
if (strcmp(topic.get(), aTopic)) {
return NS_OK;
}
// Message received from the child.
if (!mFrameWindow) {
if (mTabParent == aSubject) {
ProcessStateChanged(aData);
}
return NS_OK;
}
nsCOMPtr<nsISupportsPRUint64> wrapper = do_QueryInterface(aSubject);
if (NS_WARN_IF(!wrapper)) {
return NS_ERROR_FAILURE;
}
uint64_t windowID;
nsresult rv = wrapper->GetData(&windowID);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (windowID != mFrameWindow->WindowID()) {
return NS_OK;
}
ProcessStateChanged(aData);
return NS_OK;
}
void
BrowserElementAudioChannel::ProcessStateChanged(const char16_t* aData)
{
nsAutoString value(aData);
mState = value.EqualsASCII("active") ? eStateActive : eStateInactive;
DispatchTrustedEvent(NS_LITERAL_STRING("activestatechanged"));
}
} // dom namespace
} // mozilla namespace