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gecko-dev/widget/android/nsAppShell.cpp

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/* -*- Mode: c++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 4; -*- */
/* 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 "nsAppShell.h"
#include "base/basictypes.h"
#include "base/message_loop.h"
#include "base/task.h"
#include "mozilla/Hal.h"
#include "nsIScreen.h"
#include "nsIScreenManager.h"
#include "nsWindow.h"
#include "nsThreadUtils.h"
#include "nsICommandLineRunner.h"
#include "nsIObserverService.h"
#include "nsIAppStartup.h"
#include "nsIGeolocationProvider.h"
#include "nsCacheService.h"
#include "nsIDOMEventListener.h"
#include "nsIDOMWakeLockListener.h"
#include "nsIPowerManagerService.h"
#include "nsISpeculativeConnect.h"
#include "nsITabChild.h"
#include "nsIURIFixup.h"
#include "nsCategoryManagerUtils.h"
#include "nsCDefaultURIFixup.h"
#include "nsToolkitCompsCID.h"
#include "nsGeoPosition.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/Telemetry.h"
#include "mozilla/Services.h"
#include "mozilla/Preferences.h"
#include "mozilla/Hal.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/intl/OSPreferences.h"
#include "mozilla/widget/ScreenManager.h"
#include "prenv.h"
#include "AndroidBridge.h"
#include "AndroidBridgeUtilities.h"
#include "GeneratedJNINatives.h"
#include <android/log.h>
#include <pthread.h>
#include <wchar.h>
#include "GeckoProfiler.h"
#ifdef MOZ_ANDROID_HISTORY
#include "nsNetUtil.h"
#include "nsIURI.h"
#include "IHistory.h"
#endif
#ifdef MOZ_LOGGING
#include "mozilla/Logging.h"
#endif
#include "AndroidAlerts.h"
#include "AndroidUiThread.h"
#include "ANRReporter.h"
#include "GeckoBatteryManager.h"
#include "GeckoNetworkManager.h"
#include "GeckoProcessManager.h"
#include "GeckoScreenOrientation.h"
#include "GeckoVRManager.h"
#include "PrefsHelper.h"
#include "fennec/MemoryMonitor.h"
#include "fennec/Telemetry.h"
#include "fennec/ThumbnailHelper.h"
#include "ScreenHelperAndroid.h"
#ifdef DEBUG_ANDROID_EVENTS
#define EVLOG(args...) ALOG(args)
#else
#define EVLOG(args...) do { } while (0)
#endif
using namespace mozilla;
using namespace mozilla::widget;
nsIGeolocationUpdate *gLocationCallback = nullptr;
nsAppShell* nsAppShell::sAppShell;
StaticAutoPtr<Mutex> nsAppShell::sAppShellLock;
uint32_t nsAppShell::Queue::sLatencyCount[];
uint64_t nsAppShell::Queue::sLatencyTime[];
NS_IMPL_ISUPPORTS_INHERITED(nsAppShell, nsBaseAppShell, nsIObserver)
class WakeLockListener final : public nsIDOMMozWakeLockListener {
private:
~WakeLockListener() {}
public:
NS_DECL_ISUPPORTS;
nsresult Callback(const nsAString& topic, const nsAString& state) override {
java::GeckoAppShell::NotifyWakeLockChanged(topic, state);
return NS_OK;
}
};
NS_IMPL_ISUPPORTS(WakeLockListener, nsIDOMMozWakeLockListener)
nsCOMPtr<nsIPowerManagerService> sPowerManagerService = nullptr;
StaticRefPtr<WakeLockListener> sWakeLockListener;
class GeckoThreadSupport final
: public java::GeckoThread::Natives<GeckoThreadSupport>
{
// When this number goes above 0, the app is paused. When less than or
// equal to zero, the app is resumed.
static int32_t sPauseCount;
public:
static void SpeculativeConnect(jni::String::Param aUriStr)
{
if (!NS_IsMainThread()) {
// We will be on the main thread if the call was queued on the Java
// side during startup. Otherwise, the call was not queued, which
// means Gecko is already sufficiently loaded, and we don't really
// care about speculative connections at this point.
return;
}
nsCOMPtr<nsIIOService> ioServ = do_GetIOService();
nsCOMPtr<nsISpeculativeConnect> specConn = do_QueryInterface(ioServ);
if (!specConn) {
return;
}
nsCOMPtr<nsIURI> uri = nsAppShell::ResolveURI(aUriStr->ToCString());
if (!uri) {
return;
}
OriginAttributes attrs;
nsCOMPtr<nsIPrincipal> principal = BasePrincipal::CreateCodebasePrincipal(uri, attrs);
specConn->SpeculativeConnect2(uri, principal, nullptr);
}
static void WaitOnGecko()
{
struct NoOpRunnable : Runnable
{
NoOpRunnable() : Runnable("NoOpRunnable") {}
NS_IMETHOD Run() override { return NS_OK; }
};
struct NoOpEvent : nsAppShell::Event
{
void Run() override
{
// We cannot call NS_DispatchToMainThread from within
// WaitOnGecko itself because the thread that is calling
// WaitOnGecko may not be an nsThread, and may not be able to do
// a sync dispatch.
NS_DispatchToMainThread(do_AddRef(new NoOpRunnable()),
NS_DISPATCH_SYNC);
}
};
nsAppShell::SyncRunEvent(NoOpEvent());
}
static void OnPause()
{
MOZ_ASSERT(NS_IsMainThread());
sPauseCount++;
// If sPauseCount is now 1, we just crossed the threshold from "resumed"
// "paused". so we should notify observers and so on.
if (sPauseCount != 1) {
return;
}
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
obsServ->NotifyObservers(nullptr, "application-background", nullptr);
obsServ->NotifyObservers(nullptr, "memory-pressure", u"heap-minimize");
// If we are OOM killed with the disk cache enabled, the entire
// cache will be cleared (bug 105843), so shut down the cache here
// and re-init on foregrounding
if (nsCacheService::GlobalInstance()) {
nsCacheService::GlobalInstance()->Shutdown();
}
// We really want to send a notification like profile-before-change,
// but profile-before-change ends up shutting some things down instead
// of flushing data
Preferences* prefs = static_cast<Preferences *>(Preferences::GetService());
if (prefs) {
// Force a main thread blocking save
prefs->SavePrefFileBlocking();
}
}
static void OnResume()
{
MOZ_ASSERT(NS_IsMainThread());
sPauseCount--;
// If sPauseCount is now 0, we just crossed the threshold from "paused"
// to "resumed", so we should notify observers and so on.
if (sPauseCount != 0) {
return;
}
// If we are OOM killed with the disk cache enabled, the entire
// cache will be cleared (bug 105843), so shut down cache on backgrounding
// and re-init here
if (nsCacheService::GlobalInstance()) {
nsCacheService::GlobalInstance()->Init();
}
// We didn't return from one of our own activities, so restore
// to foreground status
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
obsServ->NotifyObservers(nullptr, "application-foreground", nullptr);
}
static void CreateServices(jni::String::Param aCategory, jni::String::Param aData)
{
MOZ_ASSERT(NS_IsMainThread());
nsCString category(aCategory->ToCString());
NS_CreateServicesFromCategory(
category.get(),
nullptr, // aOrigin
category.get(),
aData ? aData->ToString().get() : nullptr);
}
static int64_t RunUiThreadCallback()
{
return RunAndroidUiTasks();
}
static void ForceQuit()
{
nsCOMPtr<nsIAppStartup> appStartup =
do_GetService(NS_APPSTARTUP_CONTRACTID);
if (appStartup) {
appStartup->Quit(nsIAppStartup::eForceQuit);
}
}
static void Crash()
{
printf_stderr("Intentionally crashing...\n");
MOZ_CRASH("intentional crash");
}
};
int32_t GeckoThreadSupport::sPauseCount;
class GeckoAppShellSupport final
: public java::GeckoAppShell::Natives<GeckoAppShellSupport>
{
public:
static void ReportJavaCrash(const jni::Class::LocalRef& aCls,
jni::Throwable::Param aException,
jni::String::Param aStack)
{
if (!jni::ReportException(aCls.Env(), aException.Get(), aStack.Get())) {
// Only crash below if crash reporter is initialized and annotation
// succeeded. Otherwise try other means of reporting the crash in
// Java.
return;
}
MOZ_CRASH("Uncaught Java exception");
}
static void NotifyObservers(jni::String::Param aTopic,
jni::String::Param aData)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aTopic);
nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService();
if (!obsServ) {
return;
}
obsServ->NotifyObservers(nullptr, aTopic->ToCString().get(),
aData ? aData->ToString().get() : nullptr);
}
static void OnSensorChanged(int32_t aType, float aX, float aY, float aZ,
float aW, int64_t aTime)
{
AutoTArray<float, 4> values;
switch (aType) {
// Bug 938035, transfer HAL data for orientation sensor to meet w3c
// spec, ex: HAL report alpha=90 means East but alpha=90 means West
// in w3c spec
case hal::SENSOR_ORIENTATION:
values.AppendElement(360.0f - aX);
values.AppendElement(-aY);
values.AppendElement(-aZ);
break;
case hal::SENSOR_LINEAR_ACCELERATION:
case hal::SENSOR_ACCELERATION:
case hal::SENSOR_GYROSCOPE:
case hal::SENSOR_PROXIMITY:
values.AppendElement(aX);
values.AppendElement(aY);
values.AppendElement(aZ);
break;
case hal::SENSOR_LIGHT:
values.AppendElement(aX);
break;
case hal::SENSOR_ROTATION_VECTOR:
case hal::SENSOR_GAME_ROTATION_VECTOR:
values.AppendElement(aX);
values.AppendElement(aY);
values.AppendElement(aZ);
values.AppendElement(aW);
break;
default:
__android_log_print(ANDROID_LOG_ERROR, "Gecko",
"Unknown sensor type %d", aType);
}
hal::SensorData sdata(hal::SensorType(aType), aTime, values);
hal::NotifySensorChange(sdata);
}
static void OnLocationChanged(double aLatitude, double aLongitude,
double aAltitude, float aAccuracy,
float aAltitudeAccuracy,
float aHeading, float aSpeed, int64_t aTime)
{
if (!gLocationCallback) {
return;
}
RefPtr<nsIDOMGeoPosition> geoPosition(
new nsGeoPosition(aLatitude, aLongitude, aAltitude, aAccuracy,
aAltitudeAccuracy, aHeading, aSpeed, aTime));
gLocationCallback->Update(geoPosition);
}
static void NotifyUriVisited(jni::String::Param aUri)
{
#ifdef MOZ_ANDROID_HISTORY
nsCOMPtr<IHistory> history = services::GetHistoryService();
nsCOMPtr<nsIURI> visitedURI;
if (history &&
NS_SUCCEEDED(NS_NewURI(getter_AddRefs(visitedURI),
aUri->ToString()))) {
history->NotifyVisited(visitedURI);
}
#endif
}
static void NotifyAlertListener(jni::String::Param aName,
jni::String::Param aTopic,
jni::String::Param aCookie)
{
if (!aName || !aTopic || !aCookie) {
return;
}
widget::AndroidAlerts::NotifyListener(
aName->ToString(), aTopic->ToCString().get(),
aCookie->ToString().get());
}
};
class BrowserLocaleManagerSupport final
: public java::BrowserLocaleManager::Natives<BrowserLocaleManagerSupport>
{
public:
static void RefreshLocales()
{
intl::OSPreferences::GetInstance()->Refresh();
}
};
nsAppShell::nsAppShell()
: mSyncRunFinished(*(sAppShellLock = new Mutex("nsAppShell")),
"nsAppShell.SyncRun")
, mSyncRunQuit(false)
{
{
MutexAutoLock lock(*sAppShellLock);
sAppShell = this;
}
if (!XRE_IsParentProcess()) {
if (jni::IsAvailable()) {
GeckoThreadSupport::Init();
GeckoAppShellSupport::Init();
// Set the corresponding state in GeckoThread.
java::GeckoThread::SetState(java::GeckoThread::State::RUNNING());
}
return;
}
if (jni::IsAvailable()) {
ScreenManager& screenManager = ScreenManager::GetSingleton();
screenManager.SetHelper(mozilla::MakeUnique<ScreenHelperAndroid>());
// Initialize JNI and Set the corresponding state in GeckoThread.
AndroidBridge::ConstructBridge();
GeckoAppShellSupport::Init();
GeckoThreadSupport::Init();
mozilla::GeckoBatteryManager::Init();
mozilla::GeckoNetworkManager::Init();
mozilla::GeckoProcessManager::Init();
mozilla::GeckoScreenOrientation::Init();
mozilla::PrefsHelper::Init();
nsWindow::InitNatives();
if (jni::IsFennec()) {
BrowserLocaleManagerSupport::Init();
mozilla::ANRReporter::Init();
mozilla::MemoryMonitor::Init();
mozilla::widget::Telemetry::Init();
mozilla::ThumbnailHelper::Init();
}
java::GeckoThread::SetState(java::GeckoThread::State::JNI_READY());
CreateAndroidUiThread();
}
sPowerManagerService = do_GetService(POWERMANAGERSERVICE_CONTRACTID);
if (sPowerManagerService) {
sWakeLockListener = new WakeLockListener();
} else {
NS_WARNING("Failed to retrieve PowerManagerService, wakelocks will be broken!");
}
}
nsAppShell::~nsAppShell()
{
{
// Release any thread waiting for a sync call to finish.
MutexAutoLock lock(*sAppShellLock);
sAppShell = nullptr;
mSyncRunFinished.NotifyAll();
}
while (mEventQueue.Pop(/* mayWait */ false)) {
NS_WARNING("Discarded event on shutdown");
}
if (sPowerManagerService) {
sPowerManagerService->RemoveWakeLockListener(sWakeLockListener);
sPowerManagerService = nullptr;
sWakeLockListener = nullptr;
}
if (jni::IsAvailable() && XRE_IsParentProcess()) {
DestroyAndroidUiThread();
AndroidBridge::DeconstructBridge();
}
}
void
nsAppShell::NotifyNativeEvent()
{
mEventQueue.Signal();
}
void
nsAppShell::RecordLatencies()
{
if (!mozilla::Telemetry::CanRecordExtended()) {
return;
}
const mozilla::Telemetry::HistogramID timeIDs[] = {
mozilla::Telemetry::HistogramID::FENNEC_LOOP_UI_LATENCY,
mozilla::Telemetry::HistogramID::FENNEC_LOOP_OTHER_LATENCY
};
static_assert(ArrayLength(Queue::sLatencyCount) == Queue::LATENCY_COUNT,
"Count array length mismatch");
static_assert(ArrayLength(Queue::sLatencyTime) == Queue::LATENCY_COUNT,
"Time array length mismatch");
static_assert(ArrayLength(timeIDs) == Queue::LATENCY_COUNT,
"Time ID array length mismatch");
for (size_t i = 0; i < Queue::LATENCY_COUNT; i++) {
if (!Queue::sLatencyCount[i]) {
continue;
}
const uint64_t time = Queue::sLatencyTime[i] / 1000ull /
Queue::sLatencyCount[i];
if (time) {
mozilla::Telemetry::Accumulate(
timeIDs[i], uint32_t(std::min<uint64_t>(UINT32_MAX, time)));
}
// Reset latency counts.
Queue::sLatencyCount[i] = 0;
Queue::sLatencyTime[i] = 0;
}
}
#define PREFNAME_COALESCE_TOUCHES "dom.event.touch.coalescing.enabled"
static const char* kObservedPrefs[] = {
PREFNAME_COALESCE_TOUCHES,
nullptr
};
nsresult
nsAppShell::Init()
{
nsresult rv = nsBaseAppShell::Init();
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
if (obsServ) {
obsServ->AddObserver(this, "browser-delayed-startup-finished", false);
obsServ->AddObserver(this, "profile-after-change", false);
obsServ->AddObserver(this, "quit-application", false);
obsServ->AddObserver(this, "quit-application-granted", false);
obsServ->AddObserver(this, "xpcom-shutdown", false);
if (XRE_IsParentProcess()) {
obsServ->AddObserver(this, "chrome-document-loaded", false);
} else {
obsServ->AddObserver(this, "content-document-global-created", false);
}
}
if (sPowerManagerService)
sPowerManagerService->AddWakeLockListener(sWakeLockListener);
Preferences::AddStrongObservers(this, kObservedPrefs);
mAllowCoalescingTouches = Preferences::GetBool(PREFNAME_COALESCE_TOUCHES, true);
return rv;
}
NS_IMETHODIMP
nsAppShell::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
bool removeObserver = false;
if (!strcmp(aTopic, "xpcom-shutdown")) {
{
// Release any thread waiting for a sync call to finish.
mozilla::MutexAutoLock shellLock(*sAppShellLock);
mSyncRunQuit = true;
mSyncRunFinished.NotifyAll();
}
// We need to ensure no observers stick around after XPCOM shuts down
// or we'll see crashes, as the app shell outlives XPConnect.
mObserversHash.Clear();
return nsBaseAppShell::Observe(aSubject, aTopic, aData);
} else if (!strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID) &&
aData &&
nsDependentString(aData).Equals(NS_LITERAL_STRING(PREFNAME_COALESCE_TOUCHES))) {
mAllowCoalescingTouches = Preferences::GetBool(PREFNAME_COALESCE_TOUCHES, true);
return NS_OK;
} else if (!strcmp(aTopic, "browser-delayed-startup-finished")) {
NS_CreateServicesFromCategory("browser-delayed-startup-finished", nullptr,
"browser-delayed-startup-finished");
} else if (!strcmp(aTopic, "profile-after-change")) {
if (jni::IsAvailable()) {
// See if we want to force 16-bit color before doing anything
if (Preferences::GetBool("gfx.android.rgb16.force", false)) {
java::GeckoAppShell::SetScreenDepthOverride(16);
}
java::GeckoThread::SetState(
java::GeckoThread::State::PROFILE_READY());
// Gecko on Android follows the Android app model where it never
// stops until it is killed by the system or told explicitly to
// quit. Therefore, we should *not* exit Gecko when there is no
// window or the last window is closed. nsIAppStartup::Quit will
// still force Gecko to exit.
nsCOMPtr<nsIAppStartup> appStartup =
do_GetService(NS_APPSTARTUP_CONTRACTID);
if (appStartup) {
appStartup->EnterLastWindowClosingSurvivalArea();
}
}
removeObserver = true;
} else if (!strcmp(aTopic, "chrome-document-loaded")) {
// Set the global ready state and enable the window event dispatcher
// for this particular GeckoView.
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aSubject);
MOZ_ASSERT(doc);
nsCOMPtr<nsIWidget> widget =
widget::WidgetUtils::DOMWindowToWidget(doc->GetWindow());
// `widget` may be one of several different types in the parent
// process, including the Android nsWindow, PuppetWidget, etc. To
// ensure that we only accept the Android nsWindow, we check that the
// widget is a top-level window and that its NS_NATIVE_WIDGET value is
// non-null, which is not the case for non-native widgets like
// PuppetWidget.
if (widget &&
widget->WindowType() == nsWindowType::eWindowType_toplevel &&
widget->GetNativeData(NS_NATIVE_WIDGET) == widget) {
if (jni::IsAvailable()) {
// When our first window has loaded, assume any JS
// initialization has run and set Gecko to ready.
java::GeckoThread::CheckAndSetState(
java::GeckoThread::State::PROFILE_READY(),
java::GeckoThread::State::RUNNING());
}
const auto window = static_cast<nsWindow*>(widget.get());
window->OnGeckoViewReady();
}
} else if (!strcmp(aTopic, "quit-application")) {
if (jni::IsAvailable()) {
const bool restarting =
aData && NS_LITERAL_STRING("restart").Equals(aData);
java::GeckoThread::SetState(
restarting ?
java::GeckoThread::State::RESTARTING() :
java::GeckoThread::State::EXITING());
}
removeObserver = true;
} else if (!strcmp(aTopic, "quit-application-granted")) {
if (jni::IsAvailable()) {
// We are told explicitly to quit, perhaps due to
// nsIAppStartup::Quit being called. We should release our hold on
// nsIAppStartup and let it continue to quit.
nsCOMPtr<nsIAppStartup> appStartup =
do_GetService(NS_APPSTARTUP_CONTRACTID);
if (appStartup) {
appStartup->ExitLastWindowClosingSurvivalArea();
}
}
removeObserver = true;
} else if (!strcmp(aTopic, "nsPref:changed")) {
if (jni::IsAvailable()) {
mozilla::PrefsHelper::OnPrefChange(aData);
}
} else if (!strcmp(aTopic, "content-document-global-created")) {
// Associate the PuppetWidget of the newly-created TabChild with a
// GeckoEditableChild instance.
MOZ_ASSERT(!XRE_IsParentProcess());
nsCOMPtr<mozIDOMWindowProxy> domWindow = do_QueryInterface(aSubject);
MOZ_ASSERT(domWindow);
nsCOMPtr<nsIWidget> domWidget = widget::WidgetUtils::DOMWindowToWidget(
nsPIDOMWindowOuter::From(domWindow));
NS_ENSURE_TRUE(domWidget, NS_OK);
dom::ContentChild* contentChild = dom::ContentChild::GetSingleton();
dom::TabChild* tabChild = domWidget->GetOwningTabChild();
RefPtr<widget::PuppetWidget> widget(tabChild->WebWidget());
NS_ENSURE_TRUE(contentChild && tabChild && widget, NS_OK);
widget::TextEventDispatcherListener* listener =
widget->GetNativeTextEventDispatcherListener();
if (listener && listener !=
static_cast<widget::TextEventDispatcherListener*>(widget)) {
// We already set a listener before.
return NS_OK;
}
// Get the content/tab ID in order to get the correct
// IGeckoEditableParent object, which GeckoEditableChild uses to
// communicate with the parent process.
const uint64_t contentId = contentChild->GetID();
const uint64_t tabId = tabChild->GetTabId();
NS_ENSURE_TRUE(contentId && tabId, NS_OK);
auto editableParent = java::GeckoServiceChildProcess::GetEditableParent(
contentId, tabId);
NS_ENSURE_TRUE(editableParent, NS_OK);
auto editableChild = java::GeckoEditableChild::New(editableParent);
NS_ENSURE_TRUE(editableChild, NS_OK);
RefPtr<widget::GeckoEditableSupport> editableSupport =
new widget::GeckoEditableSupport(editableChild);
// Tell PuppetWidget to use our listener for IME operations.
widget->SetNativeTextEventDispatcherListener(editableSupport);
}
if (removeObserver) {
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
if (obsServ) {
obsServ->RemoveObserver(this, aTopic);
}
}
return NS_OK;
}
bool
nsAppShell::ProcessNextNativeEvent(bool mayWait)
{
EVLOG("nsAppShell::ProcessNextNativeEvent %d", mayWait);
AUTO_PROFILER_LABEL("nsAppShell::ProcessNextNativeEvent", OTHER);
mozilla::UniquePtr<Event> curEvent;
{
curEvent = mEventQueue.Pop(/* mayWait */ false);
if (!curEvent && mayWait) {
// This processes messages in the Android Looper. Note that we only
// get here if the normal Gecko event loop has been awoken
// (bug 750713). Looper messages effectively have the lowest
// priority because we only process them before we're about to
// wait for new events.
if (jni::IsAvailable() && XRE_IsParentProcess() &&
AndroidBridge::Bridge()->PumpMessageLoop()) {
return true;
}
AUTO_PROFILER_LABEL("nsAppShell::ProcessNextNativeEvent:Wait",
IDLE);
mozilla::BackgroundHangMonitor().NotifyWait();
curEvent = mEventQueue.Pop(/* mayWait */ true);
}
}
if (!curEvent)
return false;
mozilla::BackgroundHangMonitor().NotifyActivity();
curEvent->Run();
return true;
}
void
nsAppShell::SyncRunEvent(Event&& event,
UniquePtr<Event>(*eventFactory)(UniquePtr<Event>&&))
{
// Perform the call on the Gecko thread in a separate lambda, and wait
// on the monitor on the current thread.
MOZ_ASSERT(!NS_IsMainThread());
// This is the lock to check that app shell is still alive,
// and to wait on for the sync call to complete.
mozilla::MutexAutoLock shellLock(*sAppShellLock);
nsAppShell* const appShell = sAppShell;
if (MOZ_UNLIKELY(!appShell)) {
// Post-shutdown.
return;
}
bool finished = false;
auto runAndNotify = [&event, &finished] {
nsAppShell* const appShell = nsAppShell::Get();
if (MOZ_UNLIKELY(!appShell || appShell->mSyncRunQuit)) {
return;
}
event.Run();
finished = true;
mozilla::MutexAutoLock shellLock(*sAppShellLock);
appShell->mSyncRunFinished.NotifyAll();
};
UniquePtr<Event> runAndNotifyEvent = mozilla::MakeUnique<
LambdaEvent<decltype(runAndNotify)>>(std::move(runAndNotify));
if (eventFactory) {
runAndNotifyEvent = (*eventFactory)(std::move(runAndNotifyEvent));
}
appShell->mEventQueue.Post(std::move(runAndNotifyEvent));
while (!finished && MOZ_LIKELY(sAppShell && !sAppShell->mSyncRunQuit)) {
appShell->mSyncRunFinished.Wait();
}
}
already_AddRefed<nsIURI>
nsAppShell::ResolveURI(const nsCString& aUriStr)
{
nsCOMPtr<nsIIOService> ioServ = do_GetIOService();
nsCOMPtr<nsIURI> uri;
if (NS_SUCCEEDED(ioServ->NewURI(aUriStr, nullptr,
nullptr, getter_AddRefs(uri)))) {
return uri.forget();
}
nsCOMPtr<nsIURIFixup> fixup = do_GetService(NS_URIFIXUP_CONTRACTID);
if (fixup && NS_SUCCEEDED(
fixup->CreateFixupURI(aUriStr, 0, nullptr, getter_AddRefs(uri)))) {
return uri.forget();
}
return nullptr;
}
nsresult
nsAppShell::AddObserver(const nsAString &aObserverKey, nsIObserver *aObserver)
{
NS_ASSERTION(aObserver != nullptr, "nsAppShell::AddObserver: aObserver is null!");
mObserversHash.Put(aObserverKey, aObserver);
return NS_OK;
}
// Used by IPC code
namespace mozilla {
bool ProcessNextEvent()
{
nsAppShell* const appShell = nsAppShell::Get();
if (!appShell) {
return false;
}
return appShell->ProcessNextNativeEvent(true) ? true : false;
}
void NotifyEvent()
{
nsAppShell* const appShell = nsAppShell::Get();
if (!appShell) {
return;
}
appShell->NotifyNativeEvent();
}
}
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