forked from mozilla/gecko-dev
/
nsGlobalWindow.cpp
15126 lines (12688 loc) · 446 KB
/
nsGlobalWindow.cpp
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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 "nsGlobalWindow.h"
#include <algorithm>
#include "mozilla/MemoryReporting.h"
// Local Includes
#include "Navigator.h"
#include "nsContentSecurityManager.h"
#include "nsScreen.h"
#include "nsHistory.h"
#include "nsDOMNavigationTiming.h"
#include "nsIDOMStorageManager.h"
#include "mozilla/dom/Storage.h"
#include "mozilla/dom/IdleRequest.h"
#include "mozilla/dom/Performance.h"
#include "mozilla/dom/StorageEvent.h"
#include "mozilla/dom/StorageEventBinding.h"
#include "mozilla/dom/Timeout.h"
#include "mozilla/dom/TimeoutHandler.h"
#include "mozilla/dom/TimeoutManager.h"
#include "mozilla/IntegerPrintfMacros.h"
#if defined(MOZ_WIDGET_ANDROID) || defined(MOZ_WIDGET_GONK)
#include "mozilla/dom/WindowOrientationObserver.h"
#endif
#include "nsDOMOfflineResourceList.h"
#include "nsError.h"
#include "nsIIdleService.h"
#include "nsISizeOfEventTarget.h"
#include "nsDOMJSUtils.h"
#include "nsArrayUtils.h"
#include "nsIDOMWindowCollection.h"
#include "nsDOMWindowList.h"
#include "mozilla/dom/WakeLock.h"
#include "mozilla/dom/power/PowerManagerService.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIPermissionManager.h"
#include "nsIScriptContext.h"
#include "nsIScriptTimeoutHandler.h"
#include "nsITimeoutHandler.h"
#include "nsIController.h"
#include "nsScriptNameSpaceManager.h"
#include "nsISlowScriptDebug.h"
#include "nsWindowMemoryReporter.h"
#include "WindowNamedPropertiesHandler.h"
#include "nsFrameSelection.h"
#include "nsNetUtil.h"
#include "nsVariant.h"
#include "nsPrintfCString.h"
#include "mozilla/intl/LocaleService.h"
// Helper Classes
#include "nsJSUtils.h"
#include "jsapi.h" // for JSAutoRequest
#include "jswrapper.h"
#include "nsCharSeparatedTokenizer.h"
#include "nsReadableUtils.h"
#include "nsDOMClassInfo.h"
#include "nsJSEnvironment.h"
#include "ScriptSettings.h"
#include "mozilla/Preferences.h"
#include "mozilla/Likely.h"
#include "mozilla/Sprintf.h"
#include "mozilla/Unused.h"
// Other Classes
#include "mozilla/dom/BarProps.h"
#include "nsContentCID.h"
#include "nsLayoutStatics.h"
#include "nsCCUncollectableMarker.h"
#include "mozilla/dom/workers/Workers.h"
#include "mozilla/dom/ToJSValue.h"
#include "nsJSPrincipals.h"
#include "mozilla/Attributes.h"
#include "mozilla/Debug.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/EventStates.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/ProcessHangMonitor.h"
#include "mozilla/ThrottledEventQueue.h"
#include "AudioChannelService.h"
#include "nsAboutProtocolUtils.h"
#include "nsCharTraits.h" // NS_IS_HIGH/LOW_SURROGATE
#include "PostMessageEvent.h"
#include "mozilla/dom/DocGroup.h"
#include "mozilla/dom/TabGroup.h"
// Interfaces Needed
#include "nsIFrame.h"
#include "nsCanvasFrame.h"
#include "nsIWidget.h"
#include "nsIWidgetListener.h"
#include "nsIBaseWindow.h"
#include "nsIDeviceSensors.h"
#include "nsIContent.h"
#include "nsIDocShell.h"
#include "nsIDocCharset.h"
#include "nsIDocument.h"
#include "Crypto.h"
#include "nsIDOMDocument.h"
#include "nsIDOMElement.h"
#include "nsIDOMEvent.h"
#include "nsIDOMOfflineResourceList.h"
#include "nsDOMString.h"
#include "nsIEmbeddingSiteWindow.h"
#include "nsThreadUtils.h"
#include "nsILoadContext.h"
#include "nsIPresShell.h"
#include "nsIScrollableFrame.h"
#include "nsView.h"
#include "nsViewManager.h"
#include "nsISelectionController.h"
#include "nsISelection.h"
#include "nsIPrompt.h"
#include "nsIPromptService.h"
#include "nsIPromptFactory.h"
#include "nsIWritablePropertyBag2.h"
#include "nsIWebNavigation.h"
#include "nsIWebBrowserChrome.h"
#include "nsIWebBrowserFind.h" // For window.find()
#include "nsIWindowMediator.h" // For window.find()
#include "nsComputedDOMStyle.h"
#include "nsDOMCID.h"
#include "nsDOMWindowUtils.h"
#include "nsIWindowWatcher.h"
#include "nsPIWindowWatcher.h"
#include "nsIContentViewer.h"
#include "nsIScriptError.h"
#include "nsIControllers.h"
#include "nsIControllerContext.h"
#include "nsGlobalWindowCommands.h"
#include "nsQueryObject.h"
#include "nsContentUtils.h"
#include "nsCSSProps.h"
#include "nsIDOMFileList.h"
#include "nsIURIFixup.h"
#ifndef DEBUG
#include "nsIAppStartup.h"
#include "nsToolkitCompsCID.h"
#endif
#include "nsCDefaultURIFixup.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/EventStateManager.h"
#include "nsIObserverService.h"
#include "nsFocusManager.h"
#include "nsIXULWindow.h"
#include "nsITimedChannel.h"
#include "nsServiceManagerUtils.h"
#ifdef MOZ_XUL
#include "nsIDOMXULControlElement.h"
#include "nsMenuPopupFrame.h"
#endif
#include "mozilla/dom/CustomEvent.h"
#include "nsIJARChannel.h"
#include "nsIScreenManager.h"
#include "nsIEffectiveTLDService.h"
#include "xpcprivate.h"
#ifdef NS_PRINTING
#include "nsIPrintSettings.h"
#include "nsIPrintSettingsService.h"
#include "nsIWebBrowserPrint.h"
#endif
#include "nsWindowRoot.h"
#include "nsNetCID.h"
#include "nsIArray.h"
// XXX An unfortunate dependency exists here (two XUL files).
#include "nsIDOMXULDocument.h"
#include "nsIDOMXULCommandDispatcher.h"
#include "nsBindingManager.h"
#include "nsXBLService.h"
// used for popup blocking, needs to be converted to something
// belonging to the back-end like nsIContentPolicy
#include "nsIPopupWindowManager.h"
#include "nsIDragService.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/Selection.h"
#include "nsFrameLoader.h"
#include "nsISupportsPrimitives.h"
#include "nsXPCOMCID.h"
#include "mozilla/Logging.h"
#include "prenv.h"
#include "mozilla/dom/IDBFactory.h"
#include "mozilla/dom/MessageChannel.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/Gamepad.h"
#include "mozilla/dom/GamepadManager.h"
#include "mozilla/dom/VRDisplay.h"
#include "mozilla/dom/VRDisplayEvent.h"
#include "mozilla/dom/VRDisplayEventBinding.h"
#include "mozilla/dom/VREventObserver.h"
#include "nsRefreshDriver.h"
#include "Layers.h"
#include "mozilla/AddonPathService.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/Services.h"
#include "mozilla/Telemetry.h"
#include "mozilla/dom/Location.h"
#include "nsHTMLDocument.h"
#include "nsWrapperCacheInlines.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "prrng.h"
#include "nsSandboxFlags.h"
#include "TimeChangeObserver.h"
#include "mozilla/dom/AudioContext.h"
#include "mozilla/dom/BrowserElementDictionariesBinding.h"
#include "mozilla/dom/cache/CacheStorage.h"
#include "mozilla/dom/Console.h"
#include "mozilla/dom/Fetch.h"
#include "mozilla/dom/FunctionBinding.h"
#include "mozilla/dom/HashChangeEvent.h"
#ifdef ENABLE_INTL_API
#include "mozilla/dom/IntlUtils.h"
#endif
#include "mozilla/dom/MozSelfSupportBinding.h"
#include "mozilla/dom/PopStateEvent.h"
#include "mozilla/dom/PopupBlockedEvent.h"
#include "mozilla/dom/PrimitiveConversions.h"
#include "mozilla/dom/WindowBinding.h"
#include "nsITabChild.h"
#include "mozilla/dom/MediaQueryList.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/NavigatorBinding.h"
#include "mozilla/dom/ImageBitmap.h"
#include "mozilla/dom/ImageBitmapBinding.h"
#include "mozilla/dom/ServiceWorkerRegistration.h"
#include "mozilla/dom/U2F.h"
#include "mozilla/dom/WebIDLGlobalNameHash.h"
#include "mozilla/dom/Worklet.h"
#ifdef HAVE_SIDEBAR
#include "mozilla/dom/ExternalBinding.h"
#endif
#ifdef MOZ_WEBSPEECH
#include "mozilla/dom/SpeechSynthesis.h"
#endif
#ifdef MOZ_B2G
#include "nsPISocketTransportService.h"
#endif
#include "mozilla/fuzzing/HttpChannelFuzzer.h"
#include "mozilla/fuzzing/CamerasFuzzer.h"
#include "mozilla/fuzzing/PBrowserFuzzer.h"
#include "mozilla/dom/TabChild.h"
// Apple system headers seem to have a check() macro. <sigh>
#ifdef check
class nsIScriptTimeoutHandler;
#undef check
#endif // check
#include "AccessCheck.h"
#ifdef ANDROID
#include <android/log.h>
#endif
#ifdef XP_WIN
#include <process.h>
#define getpid _getpid
#else
#include <unistd.h> // for getpid()
#endif
static const char kStorageEnabled[] = "dom.storage.enabled";
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::dom::ipc;
using mozilla::BasePrincipal;
using mozilla::OriginAttributes;
using mozilla::TimeStamp;
using mozilla::TimeDuration;
using mozilla::dom::cache::CacheStorage;
static LazyLogModule gDOMLeakPRLog("DOMLeak");
nsGlobalWindow::WindowByIdTable *nsGlobalWindow::sWindowsById = nullptr;
bool nsGlobalWindow::sWarnedAboutWindowInternal = false;
bool nsGlobalWindow::sIdleObserversAPIFuzzTimeDisabled = false;
static int32_t gRefCnt = 0;
static int32_t gOpenPopupSpamCount = 0;
static PopupControlState gPopupControlState = openAbused;
static bool gMouseDown = false;
static bool gDragServiceDisabled = false;
static FILE *gDumpFile = nullptr;
static uint32_t gSerialCounter = 0;
#ifdef DEBUG_jst
int32_t gTimeoutCnt = 0;
#endif
#if defined(DEBUG_bryner) || defined(DEBUG_chb)
#define DEBUG_PAGE_CACHE
#endif
#define DOM_TOUCH_LISTENER_ADDED "dom-touch-listener-added"
// The interval at which we execute idle callbacks
static uint32_t gThrottledIdlePeriodLength;
#define DEFAULT_THROTTLED_IDLE_PERIOD_LENGTH 10000
#define FORWARD_TO_OUTER(method, args, err_rval) \
PR_BEGIN_MACRO \
if (IsInnerWindow()) { \
nsGlobalWindow *outer = GetOuterWindowInternal(); \
if (!AsInner()->HasActiveDocument()) { \
NS_WARNING(outer ? \
"Inner window does not have active document." : \
"No outer window available!"); \
return err_rval; \
} \
return outer->method args; \
} \
PR_END_MACRO
#define FORWARD_TO_OUTER_OR_THROW(method, args, errorresult, err_rval) \
PR_BEGIN_MACRO \
MOZ_RELEASE_ASSERT(IsInnerWindow()); \
nsGlobalWindow *outer = GetOuterWindowInternal(); \
if (MOZ_LIKELY(AsInner()->HasActiveDocument())) { \
return outer->method args; \
} \
if (!outer) { \
NS_WARNING("No outer window available!"); \
errorresult.Throw(NS_ERROR_NOT_INITIALIZED); \
} else { \
errorresult.Throw(NS_ERROR_XPC_SECURITY_MANAGER_VETO); \
} \
return err_rval; \
PR_END_MACRO
#define FORWARD_TO_OUTER_VOID(method, args) \
PR_BEGIN_MACRO \
if (IsInnerWindow()) { \
nsGlobalWindow *outer = GetOuterWindowInternal(); \
if (!AsInner()->HasActiveDocument()) { \
NS_WARNING(outer ? \
"Inner window does not have active document." : \
"No outer window available!"); \
return; \
} \
outer->method args; \
return; \
} \
PR_END_MACRO
#define FORWARD_TO_OUTER_CHROME(method, args, err_rval) \
PR_BEGIN_MACRO \
if (IsInnerWindow()) { \
nsGlobalWindow *outer = GetOuterWindowInternal(); \
if (!AsInner()->HasActiveDocument()) { \
NS_WARNING(outer ? \
"Inner window does not have active document." : \
"No outer window available!"); \
return err_rval; \
} \
return ((nsGlobalChromeWindow *)outer)->method args; \
} \
PR_END_MACRO
#define FORWARD_TO_INNER_CHROME(method, args, err_rval) \
PR_BEGIN_MACRO \
if (IsOuterWindow()) { \
if (!mInnerWindow) { \
NS_WARNING("No inner window available!"); \
return err_rval; \
} \
return ((nsGlobalChromeWindow *)nsGlobalWindow::Cast(mInnerWindow))->method args; \
} \
PR_END_MACRO
#define FORWARD_TO_OUTER_MODAL_CONTENT_WINDOW(method, args, err_rval) \
PR_BEGIN_MACRO \
if (IsInnerWindow()) { \
nsGlobalWindow *outer = GetOuterWindowInternal(); \
if (!AsInner()->HasActiveDocument()) { \
NS_WARNING(outer ? \
"Inner window does not have active document." : \
"No outer window available!"); \
return err_rval; \
} \
return ((nsGlobalModalWindow *)outer)->method args; \
} \
PR_END_MACRO
#define FORWARD_TO_INNER(method, args, err_rval) \
PR_BEGIN_MACRO \
if (IsOuterWindow()) { \
if (!mInnerWindow) { \
NS_WARNING("No inner window available!"); \
return err_rval; \
} \
return GetCurrentInnerWindowInternal()->method args; \
} \
PR_END_MACRO
#define FORWARD_TO_INNER_MODAL_CONTENT_WINDOW(method, args, err_rval) \
PR_BEGIN_MACRO \
if (IsOuterWindow()) { \
if (!mInnerWindow) { \
NS_WARNING("No inner window available!"); \
return err_rval; \
} \
return ((nsGlobalModalWindow*)GetCurrentInnerWindowInternal())->method args; \
} \
PR_END_MACRO
#define FORWARD_TO_INNER_VOID(method, args) \
PR_BEGIN_MACRO \
if (IsOuterWindow()) { \
if (!mInnerWindow) { \
NS_WARNING("No inner window available!"); \
return; \
} \
GetCurrentInnerWindowInternal()->method args; \
return; \
} \
PR_END_MACRO
// Same as FORWARD_TO_INNER, but this will create a fresh inner if an
// inner doesn't already exists.
#define FORWARD_TO_INNER_CREATE(method, args, err_rval) \
PR_BEGIN_MACRO \
if (IsOuterWindow()) { \
if (!mInnerWindow) { \
if (mIsClosed) { \
return err_rval; \
} \
nsCOMPtr<nsIDocument> kungFuDeathGrip = GetDoc(); \
::mozilla::Unused << kungFuDeathGrip; \
if (!mInnerWindow) { \
return err_rval; \
} \
} \
return GetCurrentInnerWindowInternal()->method args; \
} \
PR_END_MACRO
// CIDs
static NS_DEFINE_CID(kXULControllersCID, NS_XULCONTROLLERS_CID);
#define NETWORK_UPLOAD_EVENT_NAME NS_LITERAL_STRING("moznetworkupload")
#define NETWORK_DOWNLOAD_EVENT_NAME NS_LITERAL_STRING("moznetworkdownload")
/**
* An indirect observer object that means we don't have to implement nsIObserver
* on nsGlobalWindow, where any script could see it.
*/
class nsGlobalWindowObserver final : public nsIObserver,
public nsIInterfaceRequestor
{
public:
explicit nsGlobalWindowObserver(nsGlobalWindow* aWindow) : mWindow(aWindow) {}
NS_DECL_ISUPPORTS
NS_IMETHOD Observe(nsISupports* aSubject, const char* aTopic, const char16_t* aData) override
{
if (!mWindow)
return NS_OK;
return mWindow->Observe(aSubject, aTopic, aData);
}
void Forget() { mWindow = nullptr; }
NS_IMETHOD GetInterface(const nsIID& aIID, void** aResult) override
{
if (mWindow && aIID.Equals(NS_GET_IID(nsIDOMWindow)) && mWindow) {
return mWindow->QueryInterface(aIID, aResult);
}
return NS_NOINTERFACE;
}
private:
~nsGlobalWindowObserver() = default;
// This reference is non-owning and safe because it's cleared by
// nsGlobalWindow::CleanUp().
nsGlobalWindow* MOZ_NON_OWNING_REF mWindow;
};
NS_IMPL_ISUPPORTS(nsGlobalWindowObserver, nsIObserver, nsIInterfaceRequestor)
static already_AddRefed<nsIVariant>
CreateVoidVariant()
{
RefPtr<nsVariantCC> writable = new nsVariantCC();
writable->SetAsVoid();
return writable.forget();
}
nsresult
DialogValueHolder::Get(nsIPrincipal* aSubject, nsIVariant** aResult)
{
nsCOMPtr<nsIVariant> result;
if (aSubject->SubsumesConsideringDomain(mOrigin)) {
result = mValue;
} else {
result = CreateVoidVariant();
}
result.forget(aResult);
return NS_OK;
}
void
DialogValueHolder::Get(JSContext* aCx, JS::Handle<JSObject*> aScope,
nsIPrincipal* aSubject,
JS::MutableHandle<JS::Value> aResult,
mozilla::ErrorResult& aError)
{
if (aSubject->Subsumes(mOrigin)) {
aError = nsContentUtils::XPConnect()->VariantToJS(aCx, aScope,
mValue, aResult);
} else {
aResult.setUndefined();
}
}
class IdleRequestExecutor;
class IdleRequestExecutorTimeoutHandler final : public TimeoutHandler
{
public:
explicit IdleRequestExecutorTimeoutHandler(IdleRequestExecutor* aExecutor)
: mExecutor(aExecutor)
{
}
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(IdleRequestExecutorTimeoutHandler,
TimeoutHandler)
nsresult Call() override;
private:
~IdleRequestExecutorTimeoutHandler() {}
RefPtr<IdleRequestExecutor> mExecutor;
};
NS_IMPL_CYCLE_COLLECTION_INHERITED(IdleRequestExecutorTimeoutHandler, TimeoutHandler, mExecutor)
NS_IMPL_ADDREF_INHERITED(IdleRequestExecutorTimeoutHandler, TimeoutHandler)
NS_IMPL_RELEASE_INHERITED(IdleRequestExecutorTimeoutHandler, TimeoutHandler)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleRequestExecutorTimeoutHandler)
NS_INTERFACE_MAP_END_INHERITING(TimeoutHandler)
class IdleRequestExecutor final : public nsIRunnable
, public nsICancelableRunnable
, public nsIIncrementalRunnable
{
public:
explicit IdleRequestExecutor(nsGlobalWindow* aWindow)
: mDispatched(false)
, mDeadline(TimeStamp::Now())
, mWindow(aWindow)
{
MOZ_DIAGNOSTIC_ASSERT(mWindow);
MOZ_DIAGNOSTIC_ASSERT(mWindow->IsInnerWindow());
mIdlePeriodLimit = { mDeadline, mWindow->LastIdleRequestHandle() };
mDelayedExecutorDispatcher = new IdleRequestExecutorTimeoutHandler(this);
}
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(IdleRequestExecutor, nsIRunnable)
NS_DECL_NSIRUNNABLE
nsresult Cancel() override;
void SetDeadline(TimeStamp aDeadline) override;
bool IsCancelled() const { return !mWindow || mWindow->AsInner()->InnerObjectsFreed(); }
// Checks if aRequest shouldn't execute in the current idle period
// since it has been queued from a chained call to
// requestIdleCallback from within a running idle callback.
bool IneligibleForCurrentIdlePeriod(IdleRequest* aRequest) const
{
return aRequest->Handle() >= mIdlePeriodLimit.mLastRequestIdInIdlePeriod &&
TimeStamp::Now() <= mIdlePeriodLimit.mEndOfIdlePeriod;
}
void MaybeUpdateIdlePeriodLimit();
// Maybe dispatch the IdleRequestExecutor. MabyeDispatch will
// schedule a delayed dispatch if the associated window is in the
// background or if given a time to wait until dispatching.
void MaybeDispatch(TimeStamp aDelayUntil = TimeStamp());
void ScheduleDispatch();
private:
struct IdlePeriodLimit
{
TimeStamp mEndOfIdlePeriod;
uint32_t mLastRequestIdInIdlePeriod;
};
void DelayedDispatch(uint32_t aDelay);
~IdleRequestExecutor() {}
bool mDispatched;
TimeStamp mDeadline;
IdlePeriodLimit mIdlePeriodLimit;
RefPtr<nsGlobalWindow> mWindow;
// The timeout handler responsible for dispatching this executor in
// the case of immediate dispatch to the idle queue isn't
// desirable. This is used if we've dispatched all idle callbacks
// that are allowed to run in the current idle period, or if the
// associated window is currently in the background.
nsCOMPtr<nsITimeoutHandler> mDelayedExecutorDispatcher;
// If not Nothing() then this value is the handle to the currently
// scheduled delayed executor dispatcher. This is needed to be able
// to cancel the timeout handler in case of the executor being
// cancelled.
Maybe<int32_t> mDelayedExecutorHandle;
};
NS_IMPL_CYCLE_COLLECTION_CLASS(IdleRequestExecutor)
NS_IMPL_CYCLE_COLLECTING_ADDREF(IdleRequestExecutor)
NS_IMPL_CYCLE_COLLECTING_RELEASE(IdleRequestExecutor)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(IdleRequestExecutor)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mDelayedExecutorDispatcher)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IdleRequestExecutor)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDelayedExecutorDispatcher)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleRequestExecutor)
NS_INTERFACE_MAP_ENTRY(nsIRunnable)
NS_INTERFACE_MAP_ENTRY(nsICancelableRunnable)
NS_INTERFACE_MAP_ENTRY(nsIIncrementalRunnable)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIRunnable)
NS_INTERFACE_MAP_END
NS_IMETHODIMP
IdleRequestExecutor::Run()
{
MOZ_ASSERT(NS_IsMainThread());
mDispatched = false;
if (mWindow) {
return mWindow->ExecuteIdleRequest(mDeadline);
}
return NS_OK;
}
nsresult
IdleRequestExecutor::Cancel()
{
MOZ_ASSERT(NS_IsMainThread());
if (mDelayedExecutorHandle && mWindow) {
mWindow->AsInner()->TimeoutManager().ClearTimeout(
mDelayedExecutorHandle.value(),
Timeout::Reason::eIdleCallbackTimeout);
}
mWindow = nullptr;
return NS_OK;
}
void
IdleRequestExecutor::SetDeadline(TimeStamp aDeadline)
{
MOZ_ASSERT(NS_IsMainThread());
if (!mWindow) {
return;
}
mDeadline = aDeadline;
}
void
IdleRequestExecutor::MaybeUpdateIdlePeriodLimit()
{
if (TimeStamp::Now() > mIdlePeriodLimit.mEndOfIdlePeriod) {
mIdlePeriodLimit = { mDeadline, mWindow->LastIdleRequestHandle() };
}
}
void
IdleRequestExecutor::MaybeDispatch(TimeStamp aDelayUntil)
{
// If we've already dispatched the executor we don't want to do it
// again. Also, if we've called IdleRequestExecutor::Cancel mWindow
// will be null, which indicates that we shouldn't dispatch this
// executor either.
if (mDispatched || IsCancelled()) {
return;
}
mDispatched = true;
nsPIDOMWindowOuter* outer = mWindow->GetOuterWindow();
if (outer && outer->AsOuter()->IsBackground()) {
// Set a timeout handler with a timeout of 0 ms to throttle idle
// callback requests coming from a backround window using
// background timeout throttling.
DelayedDispatch(0);
return;
}
TimeStamp now = TimeStamp::Now();
if (!aDelayUntil || aDelayUntil < now) {
ScheduleDispatch();
return;
}
TimeDuration delay = aDelayUntil - now;
DelayedDispatch(static_cast<uint32_t>(delay.ToMilliseconds()));
}
void
IdleRequestExecutor::ScheduleDispatch()
{
MOZ_ASSERT(mWindow);
mDelayedExecutorHandle = Nothing();
RefPtr<IdleRequestExecutor> request = this;
NS_IdleDispatchToCurrentThread(request.forget());
}
void
IdleRequestExecutor::DelayedDispatch(uint32_t aDelay)
{
MOZ_ASSERT(mWindow);
MOZ_ASSERT(mDelayedExecutorHandle.isNothing());
int32_t handle;
mWindow->AsInner()->TimeoutManager().SetTimeout(
mDelayedExecutorDispatcher, aDelay, false, Timeout::Reason::eIdleCallbackTimeout, &handle);
mDelayedExecutorHandle = Some(handle);
}
nsresult
IdleRequestExecutorTimeoutHandler::Call()
{
if (!mExecutor->IsCancelled()) {
mExecutor->ScheduleDispatch();
}
return NS_OK;
}
void
nsGlobalWindow::ScheduleIdleRequestDispatch()
{
AssertIsOnMainThread();
if (!mIdleRequestExecutor) {
mIdleRequestExecutor = new IdleRequestExecutor(this);
}
mIdleRequestExecutor->MaybeDispatch();
}
void
nsGlobalWindow::SuspendIdleRequests()
{
if (mIdleRequestExecutor) {
mIdleRequestExecutor->Cancel();
mIdleRequestExecutor = nullptr;
}
}
void
nsGlobalWindow::ResumeIdleRequests()
{
MOZ_ASSERT(!mIdleRequestExecutor);
ScheduleIdleRequestDispatch();
}
void
nsGlobalWindow::InsertIdleCallback(IdleRequest* aRequest)
{
AssertIsOnMainThread();
mIdleRequestCallbacks.insertBack(aRequest);
aRequest->AddRef();
}
void
nsGlobalWindow::RemoveIdleCallback(mozilla::dom::IdleRequest* aRequest)
{
AssertIsOnMainThread();
if (aRequest->HasTimeout()) {
mTimeoutManager->ClearTimeout(aRequest->GetTimeoutHandle(),
Timeout::Reason::eIdleCallbackTimeout);
}
aRequest->removeFrom(mIdleRequestCallbacks);
aRequest->Release();
}
nsresult
nsGlobalWindow::RunIdleRequest(IdleRequest* aRequest,
DOMHighResTimeStamp aDeadline,
bool aDidTimeout)
{
AssertIsOnMainThread();
RefPtr<IdleRequest> request(aRequest);
RemoveIdleCallback(request);
return request->IdleRun(AsInner(), aDeadline, aDidTimeout);
}
nsresult
nsGlobalWindow::ExecuteIdleRequest(TimeStamp aDeadline)
{
AssertIsOnMainThread();
RefPtr<IdleRequest> request = mIdleRequestCallbacks.getFirst();
if (!request) {
// There are no more idle requests, so stop scheduling idle
// request callbacks.
return NS_OK;
}
// If the request that we're trying to execute has been queued
// during the current idle period, then dispatch it again at the end
// of the idle period.
if (mIdleRequestExecutor->IneligibleForCurrentIdlePeriod(request)) {
mIdleRequestExecutor->MaybeDispatch(aDeadline);
return NS_OK;
}
DOMHighResTimeStamp deadline = 0.0;
if (Performance* perf = GetPerformance()) {
deadline = perf->GetDOMTiming()->TimeStampToDOMHighRes(aDeadline);
}
mIdleRequestExecutor->MaybeUpdateIdlePeriodLimit();
nsresult result = RunIdleRequest(request, deadline, false);
mIdleRequestExecutor->MaybeDispatch();
return result;
}
class IdleRequestTimeoutHandler final : public TimeoutHandler
{
public:
IdleRequestTimeoutHandler(JSContext* aCx,
IdleRequest* aIdleRequest,
nsPIDOMWindowInner* aWindow)
: TimeoutHandler(aCx)
, mIdleRequest(aIdleRequest)
, mWindow(aWindow)
{
}
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(IdleRequestTimeoutHandler,
TimeoutHandler)
nsresult Call() override
{
return nsGlobalWindow::Cast(mWindow)->RunIdleRequest(mIdleRequest, 0.0, true);
}
private:
~IdleRequestTimeoutHandler() {}
RefPtr<IdleRequest> mIdleRequest;
nsCOMPtr<nsPIDOMWindowInner> mWindow;
};
NS_IMPL_CYCLE_COLLECTION_INHERITED(IdleRequestTimeoutHandler,
TimeoutHandler,
mIdleRequest,
mWindow)
NS_IMPL_ADDREF_INHERITED(IdleRequestTimeoutHandler, TimeoutHandler)
NS_IMPL_RELEASE_INHERITED(IdleRequestTimeoutHandler, TimeoutHandler)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleRequestTimeoutHandler)
NS_INTERFACE_MAP_END_INHERITING(TimeoutHandler)
uint32_t
nsGlobalWindow::RequestIdleCallback(JSContext* aCx,
IdleRequestCallback& aCallback,
const IdleRequestOptions& aOptions,
ErrorResult& aError)
{
MOZ_RELEASE_ASSERT(IsInnerWindow());
AssertIsOnMainThread();
uint32_t handle = mIdleRequestCallbackCounter++;
RefPtr<IdleRequest> request =
new IdleRequest(&aCallback, handle);
if (aOptions.mTimeout.WasPassed()) {
int32_t timeoutHandle;
nsCOMPtr<nsITimeoutHandler> handler(new IdleRequestTimeoutHandler(aCx, request, AsInner()));
nsresult rv = mTimeoutManager->SetTimeout(
handler, aOptions.mTimeout.Value(), false,
Timeout::Reason::eIdleCallbackTimeout, &timeoutHandle);
if (NS_WARN_IF(NS_FAILED(rv))) {
return 0;
}
request->SetTimeoutHandle(timeoutHandle);
}
// mIdleRequestCallbacks now owns request
InsertIdleCallback(request);
if (!IsSuspended()) {
ScheduleIdleRequestDispatch();
}
return handle;
}
void
nsGlobalWindow::CancelIdleCallback(uint32_t aHandle)
{
MOZ_RELEASE_ASSERT(IsInnerWindow());
for (IdleRequest* r : mIdleRequestCallbacks) {
if (r->Handle() == aHandle) {
RemoveIdleCallback(r);
break;
}
}
}
void
nsGlobalWindow::DisableIdleCallbackRequests()
{
if (mIdleRequestExecutor) {
mIdleRequestExecutor->Cancel();
mIdleRequestExecutor = nullptr;
}
while (!mIdleRequestCallbacks.isEmpty()) {
RefPtr<IdleRequest> request = mIdleRequestCallbacks.getFirst();
RemoveIdleCallback(request);
}
}
bool
nsGlobalWindow::IsBackgroundInternal() const
{
return !mOuterWindow || mOuterWindow->IsBackground();
}
namespace mozilla {
namespace dom {
extern uint64_t
NextWindowID();
} // namespace dom
} // namespace mozilla
template<class T>
nsPIDOMWindow<T>::nsPIDOMWindow(nsPIDOMWindowOuter *aOuterWindow)
: mFrameElement(nullptr), mDocShell(nullptr), mModalStateDepth(0),
mMutationBits(0), mIsDocumentLoaded(false),
mIsHandlingResizeEvent(false), mIsInnerWindow(aOuterWindow != nullptr),
mMayHavePaintEventListener(false), mMayHaveTouchEventListener(false),
mMayHaveMouseEnterLeaveEventListener(false),
mMayHavePointerEnterLeaveEventListener(false),
mInnerObjectsFreed(false),
mIsModalContentWindow(false),
mIsActive(false), mIsBackground(false),
mMediaSuspend(Preferences::GetBool("media.block-autoplay-until-in-foreground", true) ?
nsISuspendedTypes::SUSPENDED_BLOCK : nsISuspendedTypes::NONE_SUSPENDED),
mAudioMuted(false), mAudioVolume(1.0), mAudioCaptured(false),
mDesktopModeViewport(false), mIsRootOuterWindow(false), mInnerWindow(nullptr),
mOuterWindow(aOuterWindow),
// Make sure no actual window ends up with mWindowID == 0
mWindowID(NextWindowID()), mHasNotifiedGlobalCreated(false),
mMarkedCCGeneration(0), mServiceWorkersTestingEnabled(false),
mLargeAllocStatus(LargeAllocStatus::NONE)
{
if (aOuterWindow) {