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fune/dom/ipc/BrowserChild.cpp
David Parks 770ca42976 Bug 1918907: Don't clear drag session target BrowserChild on eDragLeave/eDragExit a=diannaS 
The BrowserChild should only be cleared on EndDragSession, which is sent when
the user finishes or cancels dragging. This is reciprocal to it being set in
StartDragSession.

The change to nsDragSessionProxy::EndDragSessionImpl is non-functional -- it
highlights the BrowserChild symmetry above.

Original Revision: https://phabricator.services.mozilla.com/D222389

Differential Revision: https://phabricator.services.mozilla.com/D222947
2024-09-20 23:34:59 +00:00

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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 "BrowserChild.h"
#ifdef ACCESSIBILITY
# include "mozilla/a11y/DocAccessibleChild.h"
#endif
#include <utility>
#include "BrowserParent.h"
#include "ContentChild.h"
#include "EventStateManager.h"
#include "MMPrinter.h"
#include "PuppetWidget.h"
#include "StructuredCloneData.h"
#include "UnitTransforms.h"
#include "Units.h"
#include "VRManagerChild.h"
#include "mozilla/Assertions.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/EventForwards.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/HoldDropJSObjects.h"
#include "mozilla/IMEStateManager.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/NativeKeyBindingsType.h"
#include "mozilla/NullPrincipal.h"
#include "mozilla/PointerLockManager.h"
#include "mozilla/PresShell.h"
#include "mozilla/ProcessHangMonitor.h"
#include "mozilla/ProfilerLabels.h"
#include "mozilla/SchedulerGroup.h"
#include "mozilla/ScopeExit.h"
#include "mozilla/Services.h"
#include "mozilla/StaticPrefs_dom.h"
#include "mozilla/TextEvents.h"
#include "mozilla/ToString.h"
#include "mozilla/Unused.h"
#include "mozilla/dom/AutoPrintEventDispatcher.h"
#include "mozilla/dom/BrowserBridgeChild.h"
#include "mozilla/dom/DataTransfer.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/JSWindowActorChild.h"
#include "mozilla/dom/ImageDocument.h"
#include "mozilla/dom/LoadURIOptionsBinding.h"
#include "mozilla/dom/MessageManagerBinding.h"
#include "mozilla/dom/MouseEventBinding.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/PaymentRequestChild.h"
#include "mozilla/dom/PBrowser.h"
#include "mozilla/dom/PointerEventHandler.h"
#include "mozilla/dom/SessionStoreUtils.h"
#include "mozilla/dom/SessionStoreChild.h"
#include "mozilla/dom/UserActivation.h"
#include "mozilla/dom/WindowGlobalChild.h"
#include "mozilla/dom/WindowProxyHolder.h"
#include "mozilla/gfx/CrossProcessPaint.h"
#include "mozilla/gfx/Matrix.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/BackgroundUtils.h"
#include "mozilla/ipc/PBackgroundChild.h"
#include "mozilla/layers/APZCCallbackHelper.h"
#include "mozilla/layers/TouchActionHelper.h"
#include "mozilla/layers/APZCTreeManagerChild.h"
#include "mozilla/layers/APZChild.h"
#include "mozilla/layers/APZEventState.h"
#include "mozilla/layers/CompositorBridgeChild.h"
#include "mozilla/layers/ContentProcessController.h"
#include "mozilla/layers/DoubleTapToZoom.h"
#include "mozilla/layers/IAPZCTreeManager.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "mozilla/layers/InputAPZContext.h"
#include "mozilla/layers/WebRenderLayerManager.h"
#include "nsBrowserStatusFilter.h"
#include "nsCommandParams.h"
#include "nsContentPermissionHelper.h"
#include "nsContentUtils.h"
#include "nsDeviceContext.h"
#include "nsDocShell.h"
#include "nsDocShellLoadState.h"
#include "nsDragServiceProxy.h"
#include "nsExceptionHandler.h"
#include "nsFilePickerProxy.h"
#include "nsFocusManager.h"
#include "nsGlobalWindowOuter.h"
#include "nsIBaseWindow.h"
#include "nsIBrowserDOMWindow.h"
#include "nsIClassifiedChannel.h"
#include "nsIDocShell.h"
#include "nsIFrame.h"
#include "nsILoadContext.h"
#include "nsISHEntry.h"
#include "nsISHistory.h"
#include "nsIScreenManager.h"
#include "nsIScriptError.h"
#include "nsIURI.h"
#include "nsIURIMutator.h"
#include "nsIWeakReferenceUtils.h"
#include "nsIWebBrowser.h"
#include "nsIWebProgress.h"
#include "nsLayoutUtils.h"
#include "nsNetUtil.h"
#include "nsIOpenWindowInfo.h"
#include "nsPIDOMWindow.h"
#include "nsPIWindowRoot.h"
#include "nsPrintfCString.h"
#include "nsRefreshDriver.h"
#include "nsThreadManager.h"
#include "nsThreadUtils.h"
#include "nsVariant.h"
#include "nsViewManager.h"
#include "nsWebBrowser.h"
#include "nsWindowWatcher.h"
#include "nsIXULRuntime.h"
#ifdef MOZ_WAYLAND
# include "nsAppRunner.h"
#endif
#ifdef NS_PRINTING
# include "mozilla/layout/RemotePrintJobChild.h"
# include "nsIPrintSettings.h"
# include "nsIPrintSettingsService.h"
# include "nsIWebBrowserPrint.h"
#endif
static mozilla::LazyLogModule sApzChildLog("apz.child");
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::dom::ipc;
using namespace mozilla::ipc;
using namespace mozilla::layers;
using namespace mozilla::layout;
using namespace mozilla::widget;
using mozilla::layers::GeckoContentController;
static const char BEFORE_FIRST_PAINT[] = "before-first-paint";
static uint32_t sConsecutiveTouchMoveCount = 0;
using BrowserChildMap = nsTHashMap<nsUint64HashKey, BrowserChild*>;
static BrowserChildMap* sBrowserChildren;
StaticMutex sBrowserChildrenMutex;
already_AddRefed<Document> BrowserChild::GetTopLevelDocument() const {
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
nsCOMPtr<Document> doc = docShell ? docShell->GetExtantDocument() : nullptr;
return doc.forget();
}
PresShell* BrowserChild::GetTopLevelPresShell() const {
if (RefPtr<Document> doc = GetTopLevelDocument()) {
return doc->GetPresShell();
}
return nullptr;
}
bool BrowserChild::UpdateFrame(const RepaintRequest& aRequest) {
MOZ_ASSERT(aRequest.GetScrollId() != ScrollableLayerGuid::NULL_SCROLL_ID);
if (aRequest.IsRootContent()) {
if (PresShell* presShell = GetTopLevelPresShell()) {
// Guard against stale updates (updates meant for a pres shell which
// has since been torn down and destroyed).
if (aRequest.GetPresShellId() == presShell->GetPresShellId()) {
APZCCallbackHelper::UpdateRootFrame(aRequest);
return true;
}
}
} else {
// aRequest.mIsRoot is false, so we are trying to update a subframe.
// This requires special handling.
APZCCallbackHelper::UpdateSubFrame(aRequest);
return true;
}
return true;
}
class BrowserChild::DelayedDeleteRunnable final : public Runnable,
public nsIRunnablePriority {
RefPtr<BrowserChild> mBrowserChild;
// In order to try that this runnable runs after everything that could
// possibly touch this tab, we send it through the event queue twice.
bool mReadyToDelete = false;
public:
explicit DelayedDeleteRunnable(BrowserChild* aBrowserChild)
: Runnable("BrowserChild::DelayedDeleteRunnable"),
mBrowserChild(aBrowserChild) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aBrowserChild);
}
NS_DECL_ISUPPORTS_INHERITED
private:
~DelayedDeleteRunnable() {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mBrowserChild);
}
NS_IMETHOD GetPriority(uint32_t* aPriority) override {
*aPriority = nsIRunnablePriority::PRIORITY_NORMAL;
return NS_OK;
}
NS_IMETHOD
Run() override {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mBrowserChild);
if (!mReadyToDelete) {
// This time run this runnable at input priority.
mReadyToDelete = true;
MOZ_ALWAYS_SUCCEEDS(NS_DispatchToCurrentThread(this));
return NS_OK;
}
// Check in case ActorDestroy was called after RecvDestroy message.
if (mBrowserChild->IPCOpen()) {
Unused << PBrowserChild::Send__delete__(mBrowserChild);
}
mBrowserChild = nullptr;
return NS_OK;
}
};
NS_IMPL_ISUPPORTS_INHERITED(BrowserChild::DelayedDeleteRunnable, Runnable,
nsIRunnablePriority)
namespace {
std::map<TabId, RefPtr<BrowserChild>>& NestedBrowserChildMap() {
MOZ_ASSERT(NS_IsMainThread());
static std::map<TabId, RefPtr<BrowserChild>> sNestedBrowserChildMap;
return sNestedBrowserChildMap;
}
} // namespace
already_AddRefed<BrowserChild> BrowserChild::FindBrowserChild(
const TabId& aTabId) {
auto iter = NestedBrowserChildMap().find(aTabId);
if (iter == NestedBrowserChildMap().end()) {
return nullptr;
}
RefPtr<BrowserChild> browserChild = iter->second;
return browserChild.forget();
}
/*static*/
already_AddRefed<BrowserChild> BrowserChild::Create(
ContentChild* aManager, const TabId& aTabId, const TabContext& aContext,
BrowsingContext* aBrowsingContext, uint32_t aChromeFlags,
bool aIsTopLevel) {
RefPtr<BrowserChild> iframe = new BrowserChild(
aManager, aTabId, aContext, aBrowsingContext, aChromeFlags, aIsTopLevel);
return iframe.forget();
}
BrowserChild::BrowserChild(ContentChild* aManager, const TabId& aTabId,
const TabContext& aContext,
BrowsingContext* aBrowsingContext,
uint32_t aChromeFlags, bool aIsTopLevel)
: TabContext(aContext),
mBrowserChildMessageManager(nullptr),
mManager(aManager),
mBrowsingContext(aBrowsingContext),
mChromeFlags(aChromeFlags),
mMaxTouchPoints(0),
mLayersId{0},
mEffectsInfo{EffectsInfo::FullyHidden()},
mDynamicToolbarMaxHeight(0),
mUniqueId(aTabId),
mDidFakeShow(false),
mTriedBrowserInit(false),
mHasValidInnerSize(false),
mDestroyed(false),
mIsTopLevel(aIsTopLevel),
mIsTransparent(false),
mIPCOpen(false),
mDidSetRealShowInfo(false),
mDidLoadURLInit(false),
mSkipKeyPress(false),
mShouldSendWebProgressEventsToParent(false),
mRenderLayers(true),
mIsPreservingLayers(false),
#if defined(XP_WIN) && defined(ACCESSIBILITY)
mNativeWindowHandle(0),
#endif
mCancelContentJSEpoch(0) {
mozilla::HoldJSObjects(this);
// preloaded BrowserChild should not be added to child map
if (mUniqueId) {
MOZ_ASSERT(NestedBrowserChildMap().find(mUniqueId) ==
NestedBrowserChildMap().end());
NestedBrowserChildMap()[mUniqueId] = this;
}
mCoalesceMouseMoveEvents = StaticPrefs::dom_events_coalesce_mousemove();
if (mCoalesceMouseMoveEvents) {
mCoalescedMouseEventFlusher = new CoalescedMouseMoveFlusher(this);
}
if (StaticPrefs::dom_events_coalesce_touchmove()) {
mCoalescedTouchMoveEventFlusher = new CoalescedTouchMoveFlusher(this);
}
}
const CompositorOptions& BrowserChild::GetCompositorOptions() const {
// If you're calling this before mCompositorOptions is set, well.. don't.
MOZ_ASSERT(mCompositorOptions);
return mCompositorOptions.ref();
}
bool BrowserChild::AsyncPanZoomEnabled() const {
// This might get called by the TouchEvent::PrefEnabled code before we have
// mCompositorOptions populated (bug 1370089). In that case we just assume
// APZ is enabled because we're in a content process (because BrowserChild)
// and APZ is probably going to be enabled here since e10s is enabled.
return mCompositorOptions ? mCompositorOptions->UseAPZ() : true;
}
NS_IMETHODIMP
BrowserChild::Observe(nsISupports* aSubject, const char* aTopic,
const char16_t* aData) {
if (!strcmp(aTopic, BEFORE_FIRST_PAINT)) {
if (AsyncPanZoomEnabled()) {
nsCOMPtr<Document> subject(do_QueryInterface(aSubject));
nsCOMPtr<Document> doc(GetTopLevelDocument());
if (subject == doc) {
RefPtr<PresShell> presShell = doc->GetPresShell();
if (presShell) {
presShell->SetIsFirstPaint(true);
}
APZCCallbackHelper::InitializeRootDisplayport(presShell);
}
}
}
return NS_OK;
}
void BrowserChild::ContentReceivedInputBlock(uint64_t aInputBlockId,
bool aPreventDefault) const {
if (mApzcTreeManager) {
mApzcTreeManager->ContentReceivedInputBlock(aInputBlockId, aPreventDefault);
}
}
void BrowserChild::SetTargetAPZC(
uint64_t aInputBlockId,
const nsTArray<ScrollableLayerGuid>& aTargets) const {
if (mApzcTreeManager) {
mApzcTreeManager->SetTargetAPZC(aInputBlockId, aTargets);
}
}
bool BrowserChild::DoUpdateZoomConstraints(
const uint32_t& aPresShellId, const ViewID& aViewId,
const Maybe<ZoomConstraints>& aConstraints) {
if (!mApzcTreeManager || mDestroyed) {
return false;
}
ScrollableLayerGuid guid =
ScrollableLayerGuid(mLayersId, aPresShellId, aViewId);
mApzcTreeManager->UpdateZoomConstraints(guid, aConstraints);
return true;
}
nsresult BrowserChild::Init(mozIDOMWindowProxy* aParent,
WindowGlobalChild* aInitialWindowChild) {
MOZ_ASSERT_IF(aInitialWindowChild,
aInitialWindowChild->BrowsingContext() == mBrowsingContext);
nsCOMPtr<nsIWidget> widget = nsIWidget::CreatePuppetWidget(this);
mPuppetWidget = static_cast<PuppetWidget*>(widget.get());
if (!mPuppetWidget) {
NS_ERROR("couldn't create fake widget");
return NS_ERROR_FAILURE;
}
mPuppetWidget->InfallibleCreate(nullptr,
nullptr, // no parents
LayoutDeviceIntRect(0, 0, 0, 0),
nullptr); // HandleWidgetEvent
mWebBrowser = nsWebBrowser::Create(this, mPuppetWidget, mBrowsingContext,
aInitialWindowChild);
nsIWebBrowser* webBrowser = mWebBrowser;
mWebNav = do_QueryInterface(webBrowser);
NS_ASSERTION(mWebNav, "nsWebBrowser doesn't implement nsIWebNavigation?");
// IPC uses a WebBrowser object for which DNS prefetching is turned off
// by default. But here we really want it, so enable it explicitly
mWebBrowser->SetAllowDNSPrefetch(true);
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
MOZ_ASSERT(docShell);
mStatusFilter = new nsBrowserStatusFilter();
nsresult rv =
mStatusFilter->AddProgressListener(this, nsIWebProgress::NOTIFY_ALL);
NS_ENSURE_SUCCESS(rv, rv);
{
nsCOMPtr<nsIWebProgress> webProgress = do_QueryInterface(docShell);
rv = webProgress->AddProgressListener(mStatusFilter,
nsIWebProgress::NOTIFY_ALL);
NS_ENSURE_SUCCESS(rv, rv);
}
#ifdef DEBUG
nsCOMPtr<nsILoadContext> loadContext = do_GetInterface(WebNavigation());
MOZ_ASSERT(loadContext);
MOZ_ASSERT(loadContext->UseRemoteTabs() ==
!!(mChromeFlags & nsIWebBrowserChrome::CHROME_REMOTE_WINDOW));
MOZ_ASSERT(loadContext->UseRemoteSubframes() ==
!!(mChromeFlags & nsIWebBrowserChrome::CHROME_FISSION_WINDOW));
#endif // defined(DEBUG)
// Few lines before, baseWindow->Create() will end up creating a new
// window root in nsGlobalWindowOuter::SetDocShell.
// Then this chrome event handler, will be inherited to inner windows.
// We want to also set it to the docshell so that inner windows
// and any code that has access to the docshell
// can all listen to the same chrome event handler.
// XXX: ideally, we would set a chrome event handler earlier,
// and all windows, even the root one, will use the docshell one.
nsCOMPtr<nsPIDOMWindowOuter> window = do_GetInterface(WebNavigation());
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
nsCOMPtr<EventTarget> chromeHandler = window->GetChromeEventHandler();
docShell->SetChromeEventHandler(chromeHandler);
// Window scrollbar flags only affect top level remote frames, not fission
// frames.
if (mIsTopLevel) {
nsContentUtils::SetScrollbarsVisibility(
docShell, !!(mChromeFlags & nsIWebBrowserChrome::CHROME_SCROLLBARS));
}
nsWeakPtr weakPtrThis = do_GetWeakReference(
static_cast<nsIBrowserChild*>(this)); // for capture by the lambda
ContentReceivedInputBlockCallback callback(
[weakPtrThis](uint64_t aInputBlockId, bool aPreventDefault) {
if (nsCOMPtr<nsIBrowserChild> browserChild =
do_QueryReferent(weakPtrThis)) {
static_cast<BrowserChild*>(browserChild.get())
->ContentReceivedInputBlock(aInputBlockId, aPreventDefault);
}
});
mAPZEventState = new APZEventState(mPuppetWidget, std::move(callback));
mIPCOpen = true;
if (SessionStorePlatformCollection()) {
mSessionStoreChild = SessionStoreChild::GetOrCreate(mBrowsingContext);
}
// We've all set up, make sure our visibility state is consistent. This is
// important for OOP iframes, which start off as hidden.
UpdateVisibility();
return NS_OK;
}
NS_IMPL_CYCLE_COLLECTION_CLASS(BrowserChild)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(BrowserChild)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mBrowserChildMessageManager)
tmp->nsMessageManagerScriptExecutor::Unlink();
NS_IMPL_CYCLE_COLLECTION_UNLINK(mStatusFilter)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mWebNav)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mBrowsingContext)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mSessionStoreChild)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mContentTransformPromise)
NS_IMPL_CYCLE_COLLECTION_UNLINK_WEAK_REFERENCE
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(BrowserChild)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mBrowserChildMessageManager)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mStatusFilter)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWebNav)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mBrowsingContext)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSessionStoreChild)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mContentTransformPromise)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(BrowserChild)
tmp->nsMessageManagerScriptExecutor::Trace(aCallbacks, aClosure);
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(BrowserChild)
NS_INTERFACE_MAP_ENTRY_CONCRETE(BrowserChild)
NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChrome)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_ENTRY(nsIWindowProvider)
NS_INTERFACE_MAP_ENTRY(nsIBrowserChild)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_ENTRY(nsITooltipListener)
NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener2)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIBrowserChild)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(BrowserChild)
NS_IMPL_CYCLE_COLLECTING_RELEASE(BrowserChild)
NS_IMETHODIMP
BrowserChild::GetChromeFlags(uint32_t* aChromeFlags) {
*aChromeFlags = mChromeFlags;
return NS_OK;
}
NS_IMETHODIMP
BrowserChild::SetChromeFlags(uint32_t aChromeFlags) {
NS_WARNING("trying to SetChromeFlags from content process?");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
BrowserChild::RemoteDropLinks(
const nsTArray<RefPtr<nsIDroppedLinkItem>>& aLinks) {
nsTArray<nsString> linksArray;
nsresult rv = NS_OK;
for (nsIDroppedLinkItem* link : aLinks) {
nsString tmp;
rv = link->GetUrl(tmp);
if (NS_FAILED(rv)) {
return rv;
}
linksArray.AppendElement(tmp);
rv = link->GetName(tmp);
if (NS_FAILED(rv)) {
return rv;
}
linksArray.AppendElement(tmp);
rv = link->GetType(tmp);
if (NS_FAILED(rv)) {
return rv;
}
linksArray.AppendElement(tmp);
}
bool sent = SendDropLinks(linksArray);
return sent ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
BrowserChild::ShowAsModal() {
NS_WARNING("BrowserChild::ShowAsModal not supported in BrowserChild");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
BrowserChild::IsWindowModal(bool* aRetVal) {
*aRetVal = false;
return NS_OK;
}
NS_IMETHODIMP
BrowserChild::SetLinkStatus(const nsAString& aStatusText) {
// We can only send the status after the ipc machinery is set up
if (IPCOpen()) {
SendSetLinkStatus(aStatusText);
}
return NS_OK;
}
NS_IMETHODIMP
BrowserChild::SetDimensions(DimensionRequest&& aRequest) {
// The parent is in charge of the dimension changes. If JS code wants to
// change the dimensions (moveTo, screenX, etc.) we send a message to the
// parent about the new requested dimension, the parent does the resize/move
// then send a message to the child to update itself. For APIs like screenX
// this function is called with only the changed values. In a series of calls
// like window.screenX = 10; window.screenY = 10; for the second call, since
// screenX is not yet updated we might accidentally reset back screenX to it's
// old value. To avoid this, if a parameter did not change, we want the parent
// to handle the unchanged values.
double scale = mPuppetWidget ? mPuppetWidget->GetDefaultScale().scale : 1.0;
SendSetDimensions(aRequest, scale);
return NS_OK;
}
NS_IMETHODIMP
BrowserChild::GetDimensions(DimensionKind aDimensionKind, int32_t* aX,
int32_t* aY, int32_t* aCx, int32_t* aCy) {
ScreenIntRect rect = GetOuterRect();
if (aDimensionKind == DimensionKind::Inner) {
if (aX || aY) {
return NS_ERROR_NOT_IMPLEMENTED;
}
rect.SizeTo(GetInnerSize());
}
if (aX) {
*aX = rect.x;
}
if (aY) {
*aY = rect.y;
}
if (aCx) {
*aCx = rect.width;
}
if (aCy) {
*aCy = rect.height;
}
return NS_OK;
}
NS_IMETHODIMP
BrowserChild::Blur() { return NS_ERROR_NOT_IMPLEMENTED; }
NS_IMETHODIMP
BrowserChild::GetInterface(const nsIID& aIID, void** aSink) {
// XXXbz should we restrict the set of interfaces we hand out here?
// See bug 537429
return QueryInterface(aIID, aSink);
}
NS_IMETHODIMP
BrowserChild::ProvideWindow(nsIOpenWindowInfo* aOpenWindowInfo,
uint32_t aChromeFlags, bool aCalledFromJS,
nsIURI* aURI, const nsAString& aName,
const nsACString& aFeatures,
const UserActivation::Modifiers& aModifiers,
bool aForceNoOpener, bool aForceNoReferrer,
bool aIsPopupRequested,
nsDocShellLoadState* aLoadState, bool* aWindowIsNew,
BrowsingContext** aReturn) {
*aReturn = nullptr;
RefPtr<BrowsingContext> parent = aOpenWindowInfo->GetParent();
int32_t openLocation = nsWindowWatcher::GetWindowOpenLocation(
parent->GetDOMWindow(), aChromeFlags, aModifiers, aCalledFromJS,
aOpenWindowInfo->GetIsForPrinting());
// If it turns out we're opening in the current browser, just hand over the
// current browser's docshell.
if (openLocation == nsIBrowserDOMWindow::OPEN_CURRENTWINDOW) {
nsCOMPtr<nsIWebBrowser> browser = do_GetInterface(WebNavigation());
*aWindowIsNew = false;
nsCOMPtr<mozIDOMWindowProxy> win;
MOZ_TRY(browser->GetContentDOMWindow(getter_AddRefs(win)));
RefPtr<BrowsingContext> bc(
nsPIDOMWindowOuter::From(win)->GetBrowsingContext());
bc.forget(aReturn);
return NS_OK;
}
// Note that ProvideWindowCommon may return NS_ERROR_ABORT if the
// open window call was canceled. It's important that we pass this error
// code back to our caller.
ContentChild* cc = ContentChild::GetSingleton();
return cc->ProvideWindowCommon(
WrapNotNull(this), aOpenWindowInfo, aChromeFlags, aCalledFromJS, aURI,
aName, aFeatures, aModifiers, aForceNoOpener, aForceNoReferrer,
aIsPopupRequested, aLoadState, aWindowIsNew, aReturn);
}
void BrowserChild::DestroyWindow() {
mBrowsingContext = nullptr;
if (mStatusFilter) {
if (nsCOMPtr<nsIWebProgress> webProgress =
do_QueryInterface(WebNavigation())) {
webProgress->RemoveProgressListener(mStatusFilter);
}
mStatusFilter->RemoveProgressListener(this);
mStatusFilter = nullptr;
}
if (mCoalescedMouseEventFlusher) {
mCoalescedMouseEventFlusher->RemoveObserver();
mCoalescedMouseEventFlusher = nullptr;
}
if (mCoalescedTouchMoveEventFlusher) {
mCoalescedTouchMoveEventFlusher->RemoveObserver();
mCoalescedTouchMoveEventFlusher = nullptr;
}
if (mSessionStoreChild) {
mSessionStoreChild->Stop();
mSessionStoreChild = nullptr;
}
// In case we don't have chance to process all entries, clean all data in
// the queue.
while (mToBeDispatchedMouseData.GetSize() > 0) {
UniquePtr<CoalescedMouseData> data(
static_cast<CoalescedMouseData*>(mToBeDispatchedMouseData.PopFront()));
data.reset();
}
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(WebNavigation());
if (baseWindow) baseWindow->Destroy();
if (mPuppetWidget) {
mPuppetWidget->Destroy();
}
mLayersConnected = Nothing();
if (mLayersId.IsValid()) {
StaticMutexAutoLock lock(sBrowserChildrenMutex);
MOZ_ASSERT(sBrowserChildren);
sBrowserChildren->Remove(uint64_t(mLayersId));
if (!sBrowserChildren->Count()) {
delete sBrowserChildren;
sBrowserChildren = nullptr;
}
mLayersId = layers::LayersId{0};
}
if (mAPZEventState) {
mAPZEventState->Destroy();
mAPZEventState = nullptr;
}
}
void BrowserChild::ActorDestroy(ActorDestroyReason why) {
mIPCOpen = false;
DestroyWindow();
if (mBrowserChildMessageManager) {
// We should have a message manager if the global is alive, but it
// seems sometimes we don't. Assert in aurora/nightly, but don't
// crash in release builds.
MOZ_DIAGNOSTIC_ASSERT(mBrowserChildMessageManager->GetMessageManager());
if (mBrowserChildMessageManager->GetMessageManager()) {
// The messageManager relays messages via the BrowserChild which
// no longer exists.
mBrowserChildMessageManager->DisconnectMessageManager();
}
}
if (GetTabId() != 0) {
NestedBrowserChildMap().erase(GetTabId());
}
}
BrowserChild::~BrowserChild() {
mAnonymousGlobalScopes.Clear();
DestroyWindow();
nsCOMPtr<nsIWebBrowser> webBrowser = do_QueryInterface(WebNavigation());
if (webBrowser) {
webBrowser->SetContainerWindow(nullptr);
}
mozilla::DropJSObjects(this);
}
mozilla::ipc::IPCResult BrowserChild::RecvWillChangeProcess() {
if (mWebBrowser) {
mWebBrowser->SetWillChangeProcess();
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvLoadURL(
nsDocShellLoadState* aLoadState, const ParentShowInfo& aInfo) {
if (!mDidLoadURLInit) {
mDidLoadURLInit = true;
if (!InitBrowserChildMessageManager()) {
return IPC_FAIL_NO_REASON(this);
}
ApplyParentShowInfo(aInfo);
}
nsAutoCString spec;
aLoadState->URI()->GetSpec(spec);
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
if (!docShell) {
NS_WARNING("WebNavigation does not have a docshell");
return IPC_OK();
}
docShell->LoadURI(aLoadState, true);
CrashReporter::RecordAnnotationNSCString(CrashReporter::Annotation::URL,
spec);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvCreateAboutBlankDocumentViewer(
nsIPrincipal* aPrincipal, nsIPrincipal* aPartitionedPrincipal) {
if (aPrincipal->GetIsExpandedPrincipal() ||
aPartitionedPrincipal->GetIsExpandedPrincipal()) {
return IPC_FAIL(this, "Cannot create document with an expanded principal");
}
if (aPrincipal->IsSystemPrincipal() ||
aPartitionedPrincipal->IsSystemPrincipal()) {
MOZ_ASSERT_UNREACHABLE(
"Cannot use CreateAboutBlankDocumentViewer to create system principal "
"document in content");
return IPC_OK();
}
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
if (!docShell) {
MOZ_ASSERT_UNREACHABLE("WebNavigation does not have a docshell");
return IPC_OK();
}
nsCOMPtr<nsIURI> currentURI;
MOZ_ALWAYS_SUCCEEDS(
WebNavigation()->GetCurrentURI(getter_AddRefs(currentURI)));
if (!currentURI || !NS_IsAboutBlank(currentURI)) {
NS_WARNING("Can't create a ContentViewer unless on about:blank");
return IPC_OK();
}
docShell->CreateAboutBlankDocumentViewer(aPrincipal, aPartitionedPrincipal,
nullptr);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvResumeLoad(
const uint64_t& aPendingSwitchID, const ParentShowInfo& aInfo) {
if (!mDidLoadURLInit) {
mDidLoadURLInit = true;
if (!InitBrowserChildMessageManager()) {
return IPC_FAIL_NO_REASON(this);
}
ApplyParentShowInfo(aInfo);
}
nsresult rv = WebNavigation()->ResumeRedirectedLoad(aPendingSwitchID, -1);
if (NS_FAILED(rv)) {
NS_WARNING("WebNavigation()->ResumeRedirectedLoad failed");
}
return IPC_OK();
}
nsresult BrowserChild::CloneDocumentTreeIntoSelf(
const MaybeDiscarded<BrowsingContext>& aSourceBC,
const embedding::PrintData& aPrintData) {
#ifdef NS_PRINTING
if (NS_WARN_IF(aSourceBC.IsNullOrDiscarded())) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<Document> sourceDocument = aSourceBC.get()->GetDocument();
if (NS_WARN_IF(!sourceDocument)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDocShell> ourDocShell = do_GetInterface(WebNavigation());
if (NS_WARN_IF(!ourDocShell)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDocumentViewer> viewer;
ourDocShell->GetDocViewer(getter_AddRefs(viewer));
if (NS_WARN_IF(!viewer)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPrintSettingsService> printSettingsSvc =
do_GetService("@mozilla.org/gfx/printsettings-service;1");
if (NS_WARN_IF(!printSettingsSvc)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPrintSettings> printSettings;
nsresult rv =
printSettingsSvc->CreateNewPrintSettings(getter_AddRefs(printSettings));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
printSettingsSvc->DeserializeToPrintSettings(aPrintData, printSettings);
RefPtr<Document> clone;
{
AutoPrintEventDispatcher dispatcher(*sourceDocument);
nsAutoScriptBlocker scriptBlocker;
bool hasInProcessCallbacks = false;
clone = sourceDocument->CreateStaticClone(
ourDocShell, viewer, printSettings, &hasInProcessCallbacks);
if (NS_WARN_IF(!clone)) {
return NS_ERROR_FAILURE;
}
}
rv = UpdateRemotePrintSettings(aPrintData);
if (NS_FAILED(rv)) {
return rv;
}
#endif
return NS_OK;
}
mozilla::ipc::IPCResult BrowserChild::RecvCloneDocumentTreeIntoSelf(
const MaybeDiscarded<BrowsingContext>& aSourceBC,
const embedding::PrintData& aPrintData,
CloneDocumentTreeIntoSelfResolver&& aResolve) {
nsresult rv = NS_OK;
#ifdef NS_PRINTING
rv = CloneDocumentTreeIntoSelf(aSourceBC, aPrintData);
#endif
aResolve(NS_SUCCEEDED(rv));
return IPC_OK();
}
nsresult BrowserChild::UpdateRemotePrintSettings(
const embedding::PrintData& aPrintData) {
#ifdef NS_PRINTING
nsCOMPtr<nsIDocShell> ourDocShell = do_GetInterface(WebNavigation());
if (NS_WARN_IF(!ourDocShell)) {
return NS_ERROR_FAILURE;
}
RefPtr<Document> doc = ourDocShell->GetExtantDocument();
if (NS_WARN_IF(!doc) || NS_WARN_IF(!doc->IsStaticDocument())) {
return NS_ERROR_FAILURE;
}
RefPtr<BrowsingContext> bc = ourDocShell->GetBrowsingContext();
if (NS_WARN_IF(!bc)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPrintSettingsService> printSettingsSvc =
do_GetService("@mozilla.org/gfx/printsettings-service;1");
if (NS_WARN_IF(!printSettingsSvc)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPrintSettings> printSettings;
nsresult rv =
printSettingsSvc->CreateNewPrintSettings(getter_AddRefs(printSettings));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
printSettingsSvc->DeserializeToPrintSettings(aPrintData, printSettings);
bc->PreOrderWalk([&](BrowsingContext* aBc) {
if (nsCOMPtr<nsIDocShell> inProcess = aBc->GetDocShell()) {
nsCOMPtr<nsIDocumentViewer> viewer;
inProcess->GetDocViewer(getter_AddRefs(viewer));
if (NS_WARN_IF(!viewer)) {
return BrowsingContext::WalkFlag::Skip;
}
// The CanRunScript analysis is not smart enough to see across
// the std::function PreOrderWalk uses, so we cheat a bit here, but it is
// fine because PreOrderWalk does deal with arbitrary script changing the
// BC tree, and our code above is simple enough and keeps strong refs to
// everything.
([&]() MOZ_CAN_RUN_SCRIPT_BOUNDARY {
RefPtr<RemotePrintJobChild> printJob =
static_cast<RemotePrintJobChild*>(
aPrintData.remotePrintJob().AsChild());
viewer->SetPrintSettingsForSubdocument(printSettings, printJob);
}());
} else if (RefPtr<BrowserBridgeChild> remoteChild =
BrowserBridgeChild::GetFrom(aBc->GetEmbedderElement())) {
Unused << remoteChild->SendUpdateRemotePrintSettings(aPrintData);
return BrowsingContext::WalkFlag::Skip;
}
return BrowsingContext::WalkFlag::Next;
});
#endif
return NS_OK;
}
mozilla::ipc::IPCResult BrowserChild::RecvUpdateRemotePrintSettings(
const embedding::PrintData& aPrintData) {
#ifdef NS_PRINTING
UpdateRemotePrintSettings(aPrintData);
#endif
return IPC_OK();
}
void BrowserChild::DoFakeShow(const ParentShowInfo& aParentShowInfo) {
OwnerShowInfo ownerInfo{ScreenIntSize(), ScrollbarPreference::Auto,
nsSizeMode_Normal};
RecvShow(aParentShowInfo, ownerInfo);
mDidFakeShow = true;
}
void BrowserChild::ApplyParentShowInfo(const ParentShowInfo& aInfo) {
// Even if we already set real show info, the dpi / rounding & scale may still
// be invalid (if BrowserParent wasn't able to get widget it would just send
// 0). So better to always set up-to-date values here.
if (aInfo.dpi() > 0) {
mPuppetWidget->UpdateBackingScaleCache(aInfo.dpi(), aInfo.widgetRounding(),
aInfo.defaultScale());
}
if (mDidSetRealShowInfo) {
return;
}
if (!aInfo.fakeShowInfo()) {
// Once we've got one ShowInfo from parent, no need to update the values
// anymore.
mDidSetRealShowInfo = true;
}
mIsTransparent = aInfo.isTransparent();
}
mozilla::ipc::IPCResult BrowserChild::RecvShow(
const ParentShowInfo& aParentInfo, const OwnerShowInfo& aOwnerInfo) {
bool res = true;
mPuppetWidget->SetSizeMode(aOwnerInfo.sizeMode());
if (!mDidFakeShow) {
nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(WebNavigation());
if (!baseWindow) {
NS_ERROR("WebNavigation() doesn't QI to nsIBaseWindow");
return IPC_FAIL_NO_REASON(this);
}
baseWindow->SetVisibility(true);
res = InitBrowserChildMessageManager();
}
ApplyParentShowInfo(aParentInfo);
if (!mIsTopLevel) {
RecvScrollbarPreferenceChanged(aOwnerInfo.scrollbarPreference());
}
if (!res) {
return IPC_FAIL_NO_REASON(this);
}
UpdateVisibility();
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvInitRendering(
const TextureFactoryIdentifier& aTextureFactoryIdentifier,
const layers::LayersId& aLayersId,
const CompositorOptions& aCompositorOptions, const bool& aLayersConnected) {
mLayersConnected = Some(aLayersConnected);
mLayersConnectRequested = Some(aLayersConnected);
InitRenderingState(aTextureFactoryIdentifier, aLayersId, aCompositorOptions);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvScrollbarPreferenceChanged(
ScrollbarPreference aPreference) {
MOZ_ASSERT(!mIsTopLevel,
"Scrollbar visibility should be derived from chrome flags for "
"top-level windows");
if (nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation())) {
nsDocShell::Cast(docShell)->SetScrollbarPreference(aPreference);
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvCompositorOptionsChanged(
const CompositorOptions& aNewOptions) {
MOZ_ASSERT(mCompositorOptions);
// The only compositor option we currently support changing is APZ
// enablement. Even that is only partially supported for now:
// * Going from APZ to non-APZ is fine - we just flip the stored flag.
// Note that we keep the actors (mApzcTreeManager, and the APZChild
// created in InitAPZState()) around (read on for why).
// * Going from non-APZ to APZ is only supported if we were using
// APZ initially (at InitRendering() time) and we are transitioning
// back. In this case, we just reuse the actors which we kept around.
// Fully supporting a non-APZ to APZ transition (i.e. even in cases
// where we initialized as non-APZ) would require setting up the actors
// here. (In that case, we would also have the options of destroying
// the actors in the APZ --> non-APZ case, and always re-creating them
// during a non-APZ --> APZ transition).
mCompositorOptions->SetUseAPZ(aNewOptions.UseAPZ());
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvUpdateDimensions(
const DimensionInfo& aDimensionInfo) {
if (mLayersConnected.isNothing()) {
return IPC_OK();
}
mUnscaledOuterRect = aDimensionInfo.rect();
mClientOffset = aDimensionInfo.clientOffset();
mChromeOffset = aDimensionInfo.chromeOffset();
MOZ_ASSERT_IF(!IsTopLevel(), mChromeOffset == LayoutDeviceIntPoint());
SetUnscaledInnerSize(aDimensionInfo.size());
if (!mHasValidInnerSize && aDimensionInfo.size().width != 0 &&
aDimensionInfo.size().height != 0) {
mHasValidInnerSize = true;
}
ScreenIntSize screenSize = GetInnerSize();
ScreenIntRect screenRect = GetOuterRect();
// Make sure to set the size on the document viewer first. The
// MobileViewportManager needs the content viewer size to be updated before
// the reflow, otherwise it gets a stale size when it computes a new CSS
// viewport.
nsCOMPtr<nsIBaseWindow> baseWin = do_QueryInterface(WebNavigation());
baseWin->SetPositionAndSize(0, 0, screenSize.width, screenSize.height,
nsIBaseWindow::eRepaint);
mPuppetWidget->Resize(screenRect.x + mClientOffset.x + mChromeOffset.x,
screenRect.y + mClientOffset.y + mChromeOffset.y,
screenSize.width, screenSize.height, true);
RecvSafeAreaInsetsChanged(mPuppetWidget->GetSafeAreaInsets());
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvSizeModeChanged(
const nsSizeMode& aSizeMode) {
mPuppetWidget->SetSizeMode(aSizeMode);
if (!mPuppetWidget->IsVisible()) {
return IPC_OK();
}
nsCOMPtr<Document> document(GetTopLevelDocument());
if (!document) {
return IPC_OK();
}
nsPresContext* presContext = document->GetPresContext();
if (presContext) {
presContext->SizeModeChanged(aSizeMode);
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvChildToParentMatrix(
const Maybe<gfx::Matrix4x4>& aMatrix,
const ScreenRect& aTopLevelViewportVisibleRectInBrowserCoords) {
mChildToParentConversionMatrix =
LayoutDeviceToLayoutDeviceMatrix4x4::FromUnknownMatrix(aMatrix);
mTopLevelViewportVisibleRectInBrowserCoords =
aTopLevelViewportVisibleRectInBrowserCoords;
if (mContentTransformPromise) {
mContentTransformPromise->MaybeResolveWithUndefined();
mContentTransformPromise = nullptr;
}
// Trigger an intersection observation update since ancestor viewports
// changed.
if (RefPtr<Document> toplevelDoc = GetTopLevelDocument()) {
if (nsPresContext* pc = toplevelDoc->GetPresContext()) {
pc->RefreshDriver()->EnsureIntersectionObservationsUpdateHappens();
}
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvUpdateRemoteStyle(
const StyleImageRendering& aImageRendering) {
BrowsingContext* context = GetBrowsingContext();
if (!context) {
return IPC_OK();
}
Document* document = context->GetDocument();
if (!document) {
return IPC_OK();
}
if (document->IsImageDocument()) {
document->AsImageDocument()->UpdateRemoteStyle(aImageRendering);
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvDynamicToolbarMaxHeightChanged(
const ScreenIntCoord& aHeight) {
#if defined(MOZ_WIDGET_ANDROID)
mDynamicToolbarMaxHeight = aHeight;
RefPtr<Document> document = GetTopLevelDocument();
if (!document) {
return IPC_OK();
}
if (RefPtr<nsPresContext> presContext = document->GetPresContext()) {
presContext->SetDynamicToolbarMaxHeight(aHeight);
}
#endif
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvDynamicToolbarOffsetChanged(
const ScreenIntCoord& aOffset) {
#if defined(MOZ_WIDGET_ANDROID)
RefPtr<Document> document = GetTopLevelDocument();
if (!document) {
return IPC_OK();
}
if (nsPresContext* presContext = document->GetPresContext()) {
presContext->UpdateDynamicToolbarOffset(aOffset);
}
#endif
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvSuppressDisplayport(
const bool& aEnabled) {
if (RefPtr<PresShell> presShell = GetTopLevelPresShell()) {
presShell->SuppressDisplayport(aEnabled);
}
return IPC_OK();
}
void BrowserChild::HandleDoubleTap(const CSSPoint& aPoint,
const Modifiers& aModifiers,
const ScrollableLayerGuid& aGuid,
const DoubleTapToZoomMetrics& aMetrics) {
MOZ_LOG(
sApzChildLog, LogLevel::Debug,
("Handling double tap at %s with %p %p\n", ToString(aPoint).c_str(),
mBrowserChildMessageManager ? mBrowserChildMessageManager->GetWrapper()
: nullptr,
mBrowserChildMessageManager.get()));
if (!mBrowserChildMessageManager) {
return;
}
// Note: there is nothing to do with the modifiers here, as we are not
// synthesizing any sort of mouse event.
RefPtr<Document> document = GetTopLevelDocument();
ZoomTarget zoomTarget = CalculateRectToZoomTo(document, aPoint, aMetrics);
// The double-tap can be dispatched by any scroll frame (so |aGuid| could be
// the guid of any scroll frame), but the zoom-to-rect operation must be
// performed by the root content scroll frame, so query its identifiers
// for the SendZoomToRect() call rather than using the ones from |aGuid|.
uint32_t presShellId;
ViewID viewId;
if (APZCCallbackHelper::GetOrCreateScrollIdentifiers(
document->GetDocumentElement(), &presShellId, &viewId) &&
mApzcTreeManager) {
ScrollableLayerGuid guid(mLayersId, presShellId, viewId);
mApzcTreeManager->ZoomToRect(guid, zoomTarget,
ZoomToRectBehavior::DEFAULT_BEHAVIOR);
}
}
mozilla::ipc::IPCResult BrowserChild::RecvHandleTap(
const GeckoContentController::TapType& aType,
const LayoutDevicePoint& aPoint, const Modifiers& aModifiers,
const ScrollableLayerGuid& aGuid, const uint64_t& aInputBlockId,
const Maybe<DoubleTapToZoomMetrics>& aDoubleTapToZoomMetrics) {
// IPDL doesn't hold a strong reference to protocols as they're not required
// to be refcounted. This function can run script, which may trigger a nested
// event loop, which may release this, so we hold a strong reference here.
RefPtr<BrowserChild> kungFuDeathGrip(this);
RefPtr<PresShell> presShell = GetTopLevelPresShell();
if (!presShell || !presShell->GetPresContext() || !mAPZEventState) {
return IPC_OK();
}
CSSToLayoutDeviceScale scale(
presShell->GetPresContext()->CSSToDevPixelScale());
CSSPoint point = aPoint / scale;
// Stash the guid in InputAPZContext so that when the visual-to-layout
// transform is applied to the event's coordinates, we use the right transform
// based on the scroll frame being targeted.
// The other values don't really matter.
InputAPZContext context(aGuid, aInputBlockId, nsEventStatus_eSentinel);
switch (aType) {
case GeckoContentController::TapType::eSingleTap:
if (mBrowserChildMessageManager) {
RefPtr<APZEventState> eventState(mAPZEventState);
eventState->ProcessSingleTap(point, scale, aModifiers, 1,
aInputBlockId);
}
break;
case GeckoContentController::TapType::eDoubleTap:
HandleDoubleTap(point, aModifiers, aGuid, *aDoubleTapToZoomMetrics);
break;
case GeckoContentController::TapType::eSecondTap:
if (mBrowserChildMessageManager) {
RefPtr<APZEventState> eventState(mAPZEventState);
eventState->ProcessSingleTap(point, scale, aModifiers, 2,
aInputBlockId);
}
break;
case GeckoContentController::TapType::eLongTap:
if (mBrowserChildMessageManager) {
RefPtr<APZEventState> eventState(mAPZEventState);
eventState->ProcessLongTap(presShell, point, scale, aModifiers,
aInputBlockId);
}
break;
case GeckoContentController::TapType::eLongTapUp:
if (mBrowserChildMessageManager) {
RefPtr<APZEventState> eventState(mAPZEventState);
eventState->ProcessLongTapUp(presShell, point, scale, aModifiers);
}
break;
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPriorityHandleTap(
const GeckoContentController::TapType& aType,
const LayoutDevicePoint& aPoint, const Modifiers& aModifiers,
const ScrollableLayerGuid& aGuid, const uint64_t& aInputBlockId,
const Maybe<DoubleTapToZoomMetrics>& aDoubleTapToZoomMetrics) {
// IPDL doesn't hold a strong reference to protocols as they're not required
// to be refcounted. This function can run script, which may trigger a nested
// event loop, which may release this, so we hold a strong reference here.
RefPtr<BrowserChild> kungFuDeathGrip(this);
return RecvHandleTap(aType, aPoint, aModifiers, aGuid, aInputBlockId,
aDoubleTapToZoomMetrics);
}
void BrowserChild::NotifyAPZStateChange(
const ViewID& aViewId,
const layers::GeckoContentController::APZStateChange& aChange,
const int& aArg, Maybe<uint64_t> aInputBlockId) {
if (mAPZEventState) {
mAPZEventState->ProcessAPZStateChange(aViewId, aChange, aArg,
aInputBlockId);
}
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (aChange ==
layers::GeckoContentController::APZStateChange::eTransformEnd) {
// This is used by tests to determine when the APZ is done doing whatever
// it's doing. XXX generify this as needed when writing additional tests.
observerService->NotifyObservers(nullptr, "APZ:TransformEnd", nullptr);
observerService->NotifyObservers(nullptr, "PanZoom:StateChange",
u"NOTHING");
} else if (aChange ==
layers::GeckoContentController::APZStateChange::eTransformBegin) {
observerService->NotifyObservers(nullptr, "PanZoom:StateChange",
u"PANNING");
}
}
void BrowserChild::StartScrollbarDrag(
const layers::AsyncDragMetrics& aDragMetrics) {
ScrollableLayerGuid guid(mLayersId, aDragMetrics.mPresShellId,
aDragMetrics.mViewId);
if (mApzcTreeManager) {
mApzcTreeManager->StartScrollbarDrag(guid, aDragMetrics);
}
}
void BrowserChild::ZoomToRect(const uint32_t& aPresShellId,
const ScrollableLayerGuid::ViewID& aViewId,
const CSSRect& aRect, const uint32_t& aFlags) {
ScrollableLayerGuid guid(mLayersId, aPresShellId, aViewId);
if (mApzcTreeManager) {
mApzcTreeManager->ZoomToRect(guid, ZoomTarget{aRect}, aFlags);
}
}
mozilla::ipc::IPCResult BrowserChild::RecvActivate(uint64_t aActionId) {
MOZ_ASSERT(mWebBrowser);
mWebBrowser->FocusActivate(aActionId);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvDeactivate(uint64_t aActionId) {
MOZ_ASSERT(mWebBrowser);
mWebBrowser->FocusDeactivate(aActionId);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvStopIMEStateManagement() {
IMEStateManager::StopIMEStateManagement();
return IPC_OK();
}
void BrowserChild::ProcessPendingCoalescedTouchData() {
MOZ_ASSERT(StaticPrefs::dom_events_coalesce_touchmove());
if (mCoalescedTouchData.IsEmpty()) {
return;
}
if (mCoalescedTouchMoveEventFlusher) {
mCoalescedTouchMoveEventFlusher->RemoveObserver();
}
UniquePtr<WidgetTouchEvent> touchMoveEvent =
mCoalescedTouchData.TakeCoalescedEvent();
Unused << RecvRealTouchEvent(*touchMoveEvent,
mCoalescedTouchData.GetScrollableLayerGuid(),
mCoalescedTouchData.GetInputBlockId(),
mCoalescedTouchData.GetApzResponse());
}
void BrowserChild::ProcessPendingCoalescedMouseDataAndDispatchEvents() {
if (!mCoalesceMouseMoveEvents || !mCoalescedMouseEventFlusher) {
// We don't enable mouse coalescing or we are destroying BrowserChild.
return;
}
// We may reentry the event loop and push more data to
// mToBeDispatchedMouseData while dispatching an event.
// We may have some pending coalesced data while dispatch an event and reentry
// the event loop. In that case we don't have chance to consume the remainding
// pending data until we get new mouse events. Get some helps from
// mCoalescedMouseEventFlusher to trigger it.
mCoalescedMouseEventFlusher->StartObserver();
while (mToBeDispatchedMouseData.GetSize() > 0) {
UniquePtr<CoalescedMouseData> data(
static_cast<CoalescedMouseData*>(mToBeDispatchedMouseData.PopFront()));
UniquePtr<WidgetMouseEvent> event = data->TakeCoalescedEvent();
if (event) {
// Dispatch the pending events. Using HandleRealMouseButtonEvent
// to bypass the coalesce handling in RecvRealMouseMoveEvent. Can't use
// RecvRealMouseButtonEvent because we may also put some mouse events
// other than mousemove.
HandleRealMouseButtonEvent(*event, data->GetScrollableLayerGuid(),
data->GetInputBlockId());
}
}
// mCoalescedMouseEventFlusher may be destroyed when reentrying the event
// loop.
if (mCoalescedMouseEventFlusher) {
mCoalescedMouseEventFlusher->RemoveObserver();
}
}
LayoutDeviceToLayoutDeviceMatrix4x4
BrowserChild::GetChildToParentConversionMatrix() const {
if (mChildToParentConversionMatrix) {
return *mChildToParentConversionMatrix;
}
LayoutDevicePoint offset(GetChromeOffset());
return LayoutDeviceToLayoutDeviceMatrix4x4::Translation(offset);
}
Maybe<ScreenRect> BrowserChild::GetTopLevelViewportVisibleRectInBrowserCoords()
const {
if (!mChildToParentConversionMatrix) {
return Nothing();
}
return Some(mTopLevelViewportVisibleRectInBrowserCoords);
}
void BrowserChild::FlushAllCoalescedMouseData() {
MOZ_ASSERT(mCoalesceMouseMoveEvents);
// Move all entries from mCoalescedMouseData to mToBeDispatchedMouseData.
for (const auto& data : mCoalescedMouseData.Values()) {
if (!data || data->IsEmpty()) {
continue;
}
UniquePtr<CoalescedMouseData> dispatchData =
MakeUnique<CoalescedMouseData>();
dispatchData->RetrieveDataFrom(*data);
mToBeDispatchedMouseData.Push(dispatchData.release());
}
mCoalescedMouseData.Clear();
}
mozilla::ipc::IPCResult BrowserChild::RecvRealMouseMoveEvent(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
if (mCoalesceMouseMoveEvents && mCoalescedMouseEventFlusher) {
CoalescedMouseData* data =
mCoalescedMouseData.GetOrInsertNew(aEvent.pointerId);
MOZ_ASSERT(data);
if (data->CanCoalesce(aEvent, aGuid, aInputBlockId)) {
data->Coalesce(aEvent, aGuid, aInputBlockId);
mCoalescedMouseEventFlusher->StartObserver();
return IPC_OK();
}
// Can't coalesce current mousemove event. Put the coalesced mousemove data
// with the same pointer id to mToBeDispatchedMouseData, coalesce the
// current one, and process all pending data in mToBeDispatchedMouseData.
UniquePtr<CoalescedMouseData> dispatchData =
MakeUnique<CoalescedMouseData>();
dispatchData->RetrieveDataFrom(*data);
mToBeDispatchedMouseData.Push(dispatchData.release());
// Put new data to replace the old one in the hash table.
CoalescedMouseData* newData =
mCoalescedMouseData
.InsertOrUpdate(aEvent.pointerId, MakeUnique<CoalescedMouseData>())
.get();
newData->Coalesce(aEvent, aGuid, aInputBlockId);
// Dispatch all pending mouse events.
ProcessPendingCoalescedMouseDataAndDispatchEvents();
mCoalescedMouseEventFlusher->StartObserver();
} else if (!RecvRealMouseButtonEvent(aEvent, aGuid, aInputBlockId)) {
return IPC_FAIL_NO_REASON(this);
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvRealMouseMoveEventForTests(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
return RecvRealMouseMoveEvent(aEvent, aGuid, aInputBlockId);
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPriorityRealMouseMoveEvent(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
return RecvRealMouseMoveEvent(aEvent, aGuid, aInputBlockId);
}
mozilla::ipc::IPCResult
BrowserChild::RecvNormalPriorityRealMouseMoveEventForTests(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
return RecvRealMouseMoveEvent(aEvent, aGuid, aInputBlockId);
}
mozilla::ipc::IPCResult BrowserChild::RecvSynthMouseMoveEvent(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
if (!RecvRealMouseButtonEvent(aEvent, aGuid, aInputBlockId)) {
return IPC_FAIL_NO_REASON(this);
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPrioritySynthMouseMoveEvent(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
return RecvSynthMouseMoveEvent(aEvent, aGuid, aInputBlockId);
}
mozilla::ipc::IPCResult BrowserChild::RecvRealMouseButtonEvent(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
if (mCoalesceMouseMoveEvents && mCoalescedMouseEventFlusher &&
aEvent.mMessage != eMouseMove) {
// When receiving a mouse event other than mousemove, we have to dispatch
// all coalesced events before it. However, we can't dispatch all pending
// coalesced events directly because we may reentry the event loop while
// dispatching. To make sure we won't dispatch disorder events, we move all
// coalesced mousemove events and current event to a deque to dispatch them.
// When reentrying the event loop and dispatching more events, we put new
// events in the end of the nsQueue and dispatch events from the beginning.
FlushAllCoalescedMouseData();
UniquePtr<CoalescedMouseData> dispatchData =
MakeUnique<CoalescedMouseData>();
dispatchData->Coalesce(aEvent, aGuid, aInputBlockId);
mToBeDispatchedMouseData.Push(dispatchData.release());
ProcessPendingCoalescedMouseDataAndDispatchEvents();
return IPC_OK();
}
HandleRealMouseButtonEvent(aEvent, aGuid, aInputBlockId);
return IPC_OK();
}
void BrowserChild::HandleRealMouseButtonEvent(const WidgetMouseEvent& aEvent,
const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
WidgetMouseEvent localEvent(aEvent);
localEvent.mWidget = mPuppetWidget;
// We need one InputAPZContext here to propagate |aGuid| to places in
// SendSetTargetAPZCNotification() which apply the visual-to-layout transform,
// and another below to propagate the |postLayerization| flag (whose value
// we don't know until SendSetTargetAPZCNotification() returns) into
// the event dispatch code.
InputAPZContext context1(aGuid, aInputBlockId, nsEventStatus_eSentinel);
// Mouse events like eMouseEnterIntoWidget, that are created in the parent
// process EventStateManager code, have an input block id which they get from
// the InputAPZContext in the parent process stack. However, they did not
// actually go through the APZ code and so their mHandledByAPZ flag is false.
// Since thos events didn't go through APZ, we don't need to send
// notifications for them.
RefPtr<DisplayportSetListener> postLayerization;
if (aInputBlockId && localEvent.mFlags.mHandledByAPZ) {
nsCOMPtr<Document> document(GetTopLevelDocument());
postLayerization = APZCCallbackHelper::SendSetTargetAPZCNotification(
mPuppetWidget, document, localEvent, aGuid.mLayersId, aInputBlockId);
}
InputAPZContext context2(aGuid, aInputBlockId, nsEventStatus_eSentinel,
postLayerization != nullptr);
DispatchWidgetEventViaAPZ(localEvent);
if (aInputBlockId && localEvent.mFlags.mHandledByAPZ && mAPZEventState) {
mAPZEventState->ProcessMouseEvent(localEvent, aInputBlockId);
}
// Do this after the DispatchWidgetEventViaAPZ call above, so that if the
// mouse event triggered a post-refresh AsyncDragMetrics message to be sent
// to APZ (from scrollbar dragging in nsSliderFrame), then that will reach
// APZ before the SetTargetAPZC message. This ensures the drag input block
// gets the drag metrics before handling the input events.
if (postLayerization) {
postLayerization->Register();
}
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPriorityRealMouseButtonEvent(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
return RecvRealMouseButtonEvent(aEvent, aGuid, aInputBlockId);
}
mozilla::ipc::IPCResult BrowserChild::RecvRealMouseEnterExitWidgetEvent(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
return RecvRealMouseButtonEvent(aEvent, aGuid, aInputBlockId);
}
mozilla::ipc::IPCResult
BrowserChild::RecvNormalPriorityRealMouseEnterExitWidgetEvent(
const WidgetMouseEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
return RecvRealMouseButtonEvent(aEvent, aGuid, aInputBlockId);
}
nsEventStatus BrowserChild::DispatchWidgetEventViaAPZ(WidgetGUIEvent& aEvent) {
aEvent.ResetWaitingReplyFromRemoteProcessState();
return APZCCallbackHelper::DispatchWidgetEvent(aEvent);
}
void BrowserChild::DispatchCoalescedWheelEvent() {
UniquePtr<WidgetWheelEvent> wheelEvent =
mCoalescedWheelData.TakeCoalescedEvent();
MOZ_ASSERT(wheelEvent);
DispatchWheelEvent(*wheelEvent, mCoalescedWheelData.GetScrollableLayerGuid(),
mCoalescedWheelData.GetInputBlockId());
}
void BrowserChild::DispatchWheelEvent(const WidgetWheelEvent& aEvent,
const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
WidgetWheelEvent localEvent(aEvent);
if (aInputBlockId && aEvent.mFlags.mHandledByAPZ) {
nsCOMPtr<Document> document(GetTopLevelDocument());
RefPtr<DisplayportSetListener> postLayerization =
APZCCallbackHelper::SendSetTargetAPZCNotification(
mPuppetWidget, document, aEvent, aGuid.mLayersId, aInputBlockId);
if (postLayerization) {
postLayerization->Register();
}
}
localEvent.mWidget = mPuppetWidget;
// Stash the guid in InputAPZContext so that when the visual-to-layout
// transform is applied to the event's coordinates, we use the right transform
// based on the scroll frame being targeted.
// The other values don't really matter.
InputAPZContext context(aGuid, aInputBlockId, nsEventStatus_eSentinel);
DispatchWidgetEventViaAPZ(localEvent);
if (localEvent.mCanTriggerSwipe) {
SendRespondStartSwipeEvent(aInputBlockId, localEvent.TriggersSwipe());
}
if (aInputBlockId && aEvent.mFlags.mHandledByAPZ && mAPZEventState) {
mAPZEventState->ProcessWheelEvent(localEvent, aInputBlockId);
}
}
mozilla::ipc::IPCResult BrowserChild::RecvMouseWheelEvent(
const WidgetWheelEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
bool isNextWheelEvent = false;
// We only coalesce the current event when
// 1. It's eWheel (we don't coalesce eOperationStart and eWheelOperationEnd)
// 2. It has same attributes as the coalesced wheel event which is not yet
// fired.
if (aEvent.mMessage == eWheel) {
GetIPCChannel()->PeekMessages(
[&isNextWheelEvent](const IPC::Message& aMsg) -> bool {
if (aMsg.type() == mozilla::dom::PBrowser::Msg_MouseWheelEvent__ID) {
isNextWheelEvent = true;
}
return false; // Stop peeking.
});
if (!mCoalescedWheelData.IsEmpty() &&
!mCoalescedWheelData.CanCoalesce(aEvent, aGuid, aInputBlockId)) {
DispatchCoalescedWheelEvent();
MOZ_ASSERT(mCoalescedWheelData.IsEmpty());
}
mCoalescedWheelData.Coalesce(aEvent, aGuid, aInputBlockId);
MOZ_ASSERT(!mCoalescedWheelData.IsEmpty());
// If the next event isn't a wheel event, make sure we dispatch.
if (!isNextWheelEvent) {
DispatchCoalescedWheelEvent();
}
} else {
DispatchWheelEvent(aEvent, aGuid, aInputBlockId);
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPriorityMouseWheelEvent(
const WidgetWheelEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) {
return RecvMouseWheelEvent(aEvent, aGuid, aInputBlockId);
}
mozilla::ipc::IPCResult BrowserChild::RecvRealTouchEvent(
const WidgetTouchEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId, const nsEventStatus& aApzResponse) {
MOZ_LOG(sApzChildLog, LogLevel::Debug,
("Receiving touch event of type %d\n", aEvent.mMessage));
if (StaticPrefs::dom_events_coalesce_touchmove()) {
if (aEvent.mMessage == eTouchEnd || aEvent.mMessage == eTouchStart) {
ProcessPendingCoalescedTouchData();
}
if (aEvent.mMessage != eTouchMove) {
sConsecutiveTouchMoveCount = 0;
}
}
WidgetTouchEvent localEvent(aEvent);
localEvent.mWidget = mPuppetWidget;
// Stash the guid in InputAPZContext so that when the visual-to-layout
// transform is applied to the event's coordinates, we use the right transform
// based on the scroll frame being targeted.
// The other values don't really matter.
InputAPZContext context(aGuid, aInputBlockId, aApzResponse);
nsTArray<TouchBehaviorFlags> allowedTouchBehaviors;
if (localEvent.mMessage == eTouchStart && AsyncPanZoomEnabled()) {
nsCOMPtr<Document> document = GetTopLevelDocument();
allowedTouchBehaviors = TouchActionHelper::GetAllowedTouchBehavior(
mPuppetWidget, document, localEvent);
if (!allowedTouchBehaviors.IsEmpty() && mApzcTreeManager) {
mApzcTreeManager->SetAllowedTouchBehavior(aInputBlockId,
allowedTouchBehaviors);
}
RefPtr<DisplayportSetListener> postLayerization =
APZCCallbackHelper::SendSetTargetAPZCNotification(
mPuppetWidget, document, localEvent, aGuid.mLayersId,
aInputBlockId);
if (postLayerization) {
postLayerization->Register();
}
}
// Dispatch event to content (potentially a long-running operation)
nsEventStatus status = DispatchWidgetEventViaAPZ(localEvent);
if (!AsyncPanZoomEnabled()) {
// We shouldn't have any e10s platforms that have touch events enabled
// without APZ.
MOZ_ASSERT(false);
return IPC_OK();
}
if (mAPZEventState) {
mAPZEventState->ProcessTouchEvent(localEvent, aGuid, aInputBlockId,
aApzResponse, status,
std::move(allowedTouchBehaviors));
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPriorityRealTouchEvent(
const WidgetTouchEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId, const nsEventStatus& aApzResponse) {
return RecvRealTouchEvent(aEvent, aGuid, aInputBlockId, aApzResponse);
}
mozilla::ipc::IPCResult BrowserChild::RecvRealTouchMoveEvent(
const WidgetTouchEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId, const nsEventStatus& aApzResponse) {
if (StaticPrefs::dom_events_coalesce_touchmove()) {
++sConsecutiveTouchMoveCount;
if (mCoalescedTouchMoveEventFlusher) {
MOZ_ASSERT(aEvent.mMessage == eTouchMove);
if (mCoalescedTouchData.IsEmpty() ||
mCoalescedTouchData.CanCoalesce(aEvent, aGuid, aInputBlockId,
aApzResponse)) {
mCoalescedTouchData.Coalesce(aEvent, aGuid, aInputBlockId,
aApzResponse);
} else {
UniquePtr<WidgetTouchEvent> touchMoveEvent =
mCoalescedTouchData.TakeCoalescedEvent();
mCoalescedTouchData.Coalesce(aEvent, aGuid, aInputBlockId,
aApzResponse);
if (!RecvRealTouchEvent(*touchMoveEvent,
mCoalescedTouchData.GetScrollableLayerGuid(),
mCoalescedTouchData.GetInputBlockId(),
mCoalescedTouchData.GetApzResponse())) {
return IPC_FAIL_NO_REASON(this);
}
}
if (sConsecutiveTouchMoveCount > 1) {
mCoalescedTouchMoveEventFlusher->StartObserver();
} else {
// Flush the pending coalesced touch in order to avoid the first
// touchmove be overridden by the second one.
ProcessPendingCoalescedTouchData();
}
return IPC_OK();
}
}
if (!RecvRealTouchEvent(aEvent, aGuid, aInputBlockId, aApzResponse)) {
return IPC_FAIL_NO_REASON(this);
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPriorityRealTouchMoveEvent(
const WidgetTouchEvent& aEvent, const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId, const nsEventStatus& aApzResponse) {
return RecvRealTouchMoveEvent(aEvent, aGuid, aInputBlockId, aApzResponse);
}
mozilla::ipc::IPCResult BrowserChild::RecvRealDragEvent(
const WidgetDragEvent& aEvent, const uint32_t& aDragAction,
const uint32_t& aDropEffect, nsIPrincipal* aPrincipal,
nsIContentSecurityPolicy* aCsp) {
WidgetDragEvent localEvent(aEvent);
localEvent.mWidget = mPuppetWidget;
nsCOMPtr<nsIDragSession> dragSession = GetDragSession();
if (dragSession) {
dragSession->SetDragAction(aDragAction);
dragSession->SetTriggeringPrincipal(aPrincipal);
dragSession->SetCsp(aCsp);
RefPtr<DataTransfer> initialDataTransfer = dragSession->GetDataTransfer();
if (initialDataTransfer) {
initialDataTransfer->SetDropEffectInt(aDropEffect);
}
}
if (aEvent.mMessage == eDrop) {
bool canDrop = true;
if (!dragSession || NS_FAILED(dragSession->GetCanDrop(&canDrop)) ||
!canDrop) {
localEvent.mMessage = eDragExit;
}
} else if (aEvent.mMessage == eDragOver) {
if (dragSession) {
// This will dispatch 'drag' event at the source if the
// drag transaction started in this process.
dragSession->FireDragEventAtSource(eDrag, aEvent.mModifiers);
}
}
DispatchWidgetEventViaAPZ(localEvent);
return IPC_OK();
}
already_AddRefed<DataTransfer> BrowserChild::ConvertToDataTransfer(
nsIPrincipal* aPrincipal, nsTArray<IPCTransferableData>&& aTransferables,
EventMessage aMessage) {
// The extension process should grant access to a protected DataTransfer if
// the principal permits it (and dom.events.datatransfer.protected.enabled is
// false). Otherwise, protected DataTransfer access should only be given to
// the system.
if (!aPrincipal || Manager()->GetRemoteType() != EXTENSION_REMOTE_TYPE) {
aPrincipal = nsContentUtils::GetSystemPrincipal();
}
// Check if we are receiving any file objects. If we are we will want
// to hide any of the other objects coming in from content.
bool hasFiles = false;
for (uint32_t i = 0; i < aTransferables.Length() && !hasFiles; ++i) {
auto& items = aTransferables[i].items();
for (uint32_t j = 0; j < items.Length() && !hasFiles; ++j) {
if (items[j].data().type() ==
IPCTransferableDataType::TIPCTransferableDataBlob) {
hasFiles = true;
}
}
}
// Add the entries from the IPC to the new DataTransfer
RefPtr<DataTransfer> dataTransfer =
new DataTransfer(nullptr, aMessage, false, -1);
for (uint32_t i = 0; i < aTransferables.Length(); ++i) {
auto& items = aTransferables[i].items();
for (uint32_t j = 0; j < items.Length(); ++j) {
const IPCTransferableDataItem& item = items[j];
RefPtr<nsVariantCC> variant = new nsVariantCC();
nsresult rv =
nsContentUtils::IPCTransferableDataItemToVariant(item, variant);
if (NS_FAILED(rv)) {
continue;
}
// We should hide this data from content if we have a file, and we
// aren't a file.
bool hidden =
hasFiles && item.data().type() !=
IPCTransferableDataType::TIPCTransferableDataBlob;
dataTransfer->SetDataWithPrincipalFromOtherProcess(
NS_ConvertUTF8toUTF16(item.flavor()), variant, i, aPrincipal, hidden);
}
}
return dataTransfer.forget();
}
mozilla::ipc::IPCResult BrowserChild::RecvInvokeChildDragSession(
const MaybeDiscarded<WindowContext>& aSourceWindowContext,
const MaybeDiscarded<WindowContext>& aSourceTopWindowContext,
nsIPrincipal* aPrincipal, nsTArray<IPCTransferableData>&& aTransferables,
const uint32_t& aAction) {
if (nsCOMPtr<nsIDragService> dragService =
do_GetService("@mozilla.org/widget/dragservice;1")) {
nsIWidget* widget = WebWidget();
dragService->StartDragSession(widget);
if (RefPtr<nsIDragSession> session = GetDragSession()) {
session->SetSourceWindowContext(aSourceWindowContext.GetMaybeDiscarded());
session->SetSourceTopWindowContext(
aSourceTopWindowContext.GetMaybeDiscarded());
session->SetDragAction(aAction);
RefPtr<DataTransfer> dataTransfer = ConvertToDataTransfer(
aPrincipal, std::move(aTransferables), eDragStart);
session->SetDataTransfer(dataTransfer);
}
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvUpdateDragSession(
nsIPrincipal* aPrincipal, nsTArray<IPCTransferableData>&& aTransferables,
EventMessage aEventMessage) {
if (RefPtr<nsIDragSession> session = GetDragSession()) {
nsCOMPtr<DataTransfer> dataTransfer = ConvertToDataTransfer(
aPrincipal, std::move(aTransferables), aEventMessage);
session->SetDataTransfer(dataTransfer);
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvEndDragSession(
const bool& aDoneDrag, const bool& aUserCancelled,
const LayoutDeviceIntPoint& aDragEndPoint, const uint32_t& aKeyModifiers,
const uint32_t& aDropEffect) {
RefPtr<nsIDragSession> dragSession = GetDragSession();
if (dragSession) {
if (aUserCancelled) {
dragSession->UserCancelled();
}
RefPtr<DataTransfer> dataTransfer = dragSession->GetDataTransfer();
if (dataTransfer) {
dataTransfer->SetDropEffectInt(aDropEffect);
}
dragSession->SetDragEndPoint(aDragEndPoint.x, aDragEndPoint.y);
dragSession->EndDragSession(aDoneDrag, aKeyModifiers);
}
return IPC_OK();
}
void BrowserChild::RequestEditCommands(NativeKeyBindingsType aType,
const WidgetKeyboardEvent& aEvent,
nsTArray<CommandInt>& aCommands) {
MOZ_ASSERT(aCommands.IsEmpty());
if (NS_WARN_IF(aEvent.IsEditCommandsInitialized(aType))) {
aCommands = aEvent.EditCommandsConstRef(aType).Clone();
return;
}
switch (aType) {
case NativeKeyBindingsType::SingleLineEditor:
case NativeKeyBindingsType::MultiLineEditor:
case NativeKeyBindingsType::RichTextEditor:
break;
default:
MOZ_ASSERT_UNREACHABLE("Invalid native key bindings type");
}
// Don't send aEvent to the parent process directly because it'll be marked
// as posted to remote process.
WidgetKeyboardEvent localEvent(aEvent);
SendRequestNativeKeyBindings(static_cast<uint32_t>(aType), localEvent,
&aCommands);
}
mozilla::ipc::IPCResult BrowserChild::RecvNativeSynthesisResponse(
const uint64_t& aObserverId, const nsCString& aResponse) {
mozilla::widget::AutoObserverNotifier::NotifySavedObserver(aObserverId,
aResponse.get());
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvUpdateSHistory() {
if (mSessionStoreChild) {
mSessionStoreChild->UpdateSHistoryChanges();
}
return IPC_OK();
}
// In case handling repeated keys takes much time, we skip firing new ones.
bool BrowserChild::SkipRepeatedKeyEvent(const WidgetKeyboardEvent& aEvent) {
if (mRepeatedKeyEventTime.IsNull() || !aEvent.CanSkipInRemoteProcess() ||
(aEvent.mMessage != eKeyDown && aEvent.mMessage != eKeyPress)) {
mRepeatedKeyEventTime = TimeStamp();
mSkipKeyPress = false;
return false;
}
if ((aEvent.mMessage == eKeyDown &&
(mRepeatedKeyEventTime > aEvent.mTimeStamp)) ||
(mSkipKeyPress && (aEvent.mMessage == eKeyPress))) {
// If we skip a keydown event, also the following keypress events should be
// skipped.
mSkipKeyPress |= aEvent.mMessage == eKeyDown;
return true;
}
if (aEvent.mMessage == eKeyDown) {
// If keydown wasn't skipped, nor should the possible following keypress.
mRepeatedKeyEventTime = TimeStamp();
mSkipKeyPress = false;
}
return false;
}
void BrowserChild::UpdateRepeatedKeyEventEndTime(
const WidgetKeyboardEvent& aEvent) {
if (aEvent.mIsRepeat &&
(aEvent.mMessage == eKeyDown || aEvent.mMessage == eKeyPress)) {
mRepeatedKeyEventTime = TimeStamp::Now();
}
}
mozilla::ipc::IPCResult BrowserChild::RecvRealKeyEvent(
const WidgetKeyboardEvent& aEvent, const nsID& aUUID) {
MOZ_ASSERT_IF(aEvent.mMessage == eKeyPress,
aEvent.AreAllEditCommandsInitialized());
// If content code called preventDefault() on a keydown event, then we don't
// want to process any following keypress events which is caused by the
// preceding keydown (i.e., default action of the preceding keydown).
// In other words, if the keypress is not a default action of the preceding
// keydown, we should not stop dispatching keypress event even if the
// immediate preceding keydown was consumed.
const bool isPrecedingKeyDownEventConsumed =
aEvent.mMessage == eKeyPress && mPreviousConsumedKeyDownCode.isSome() &&
mPreviousConsumedKeyDownCode.value() == aEvent.mCodeNameIndex;
WidgetKeyboardEvent localEvent(aEvent);
localEvent.mWidget = mPuppetWidget;
localEvent.mUniqueId = aEvent.mUniqueId;
if (!SkipRepeatedKeyEvent(aEvent) && !isPrecedingKeyDownEventConsumed) {
nsEventStatus status = DispatchWidgetEventViaAPZ(localEvent);
// Update the end time of the possible repeated event so that we can skip
// some incoming events in case event handling took long time.
UpdateRepeatedKeyEventEndTime(localEvent);
if (aEvent.mMessage == eKeyDown) {
// If eKeyDown is consumed, we should stop dispatching the following
// eKeyPress events since the events are default action of eKeyDown.
// FIXME: We should synthesize eKeyPress in this process (bug 1181501).
if (status == nsEventStatus_eConsumeNoDefault) {
MOZ_ASSERT_IF(!aEvent.mFlags.mIsSynthesizedForTests,
aEvent.mCodeNameIndex != CODE_NAME_INDEX_USE_STRING);
// If mPreviousConsumedKeyDownCode is not Nothing, 2 or more keys may be
// pressed at same time and their eKeyDown are consumed. However, we
// forget the previous eKeyDown event result here and that might cause
// dispatching eKeyPress events caused by the previous eKeyDown in
// theory. However, this should not occur because eKeyPress should be
// fired before another eKeyDown, although it's depend on how the native
// keyboard event handler is implemented.
mPreviousConsumedKeyDownCode = Some(aEvent.mCodeNameIndex);
}
// If eKeyDown is not consumed but we know preceding eKeyDown is consumed,
// we need to forget it since we should not stop dispatching following
// eKeyPress events which are default action of current eKeyDown.
else if (mPreviousConsumedKeyDownCode.isSome() &&
aEvent.mCodeNameIndex == mPreviousConsumedKeyDownCode.value()) {
mPreviousConsumedKeyDownCode.reset();
}
}
// eKeyPress is a default action of eKeyDown. Therefore, eKeyPress is fired
// between eKeyDown and eKeyUp. So, received an eKeyUp for eKeyDown which
// was consumed means that following eKeyPress events should be dispatched.
// Therefore, we need to forget the fact that the preceding eKeyDown was
// consumed right now.
// NOTE: On Windows, eKeyPress may be fired without preceding eKeyDown if
// IME or utility app sends WM_CHAR message. So, if we don't forget it,
// we'd consume unrelated eKeyPress events.
else if (aEvent.mMessage == eKeyUp &&
mPreviousConsumedKeyDownCode.isSome() &&
aEvent.mCodeNameIndex == mPreviousConsumedKeyDownCode.value()) {
mPreviousConsumedKeyDownCode.reset();
}
if (localEvent.mFlags.mIsSuppressedOrDelayed) {
localEvent.PreventDefault();
}
// If the event's default isn't prevented but the status is no default,
// That means that the event was consumed by EventStateManager or something
// which is not a usual event handler. In such case, prevent its default
// as a default handler. For example, when an eKeyPress event matches
// with a content accesskey, and it's executed, preventDefault() of the
// event won't be called but the status is set to "no default". Then,
// the event shouldn't be handled by nsMenuBarListener in the main process.
if (!localEvent.DefaultPrevented() &&
status == nsEventStatus_eConsumeNoDefault) {
localEvent.PreventDefault();
}
MOZ_DIAGNOSTIC_ASSERT(!localEvent.PropagationStopped());
}
// The keyboard event which we ignore should not be handled in the main
// process for shortcut key handling. For notifying if we skipped it, we can
// use "stop propagation" flag here because it must be cleared by
// `EventTargetChainItem` if we've dispatched it.
else {
localEvent.StopPropagation();
}
// If we don't need to send a rely for the given keyboard event, we do nothing
// anymore here.
if (!aEvent.WantReplyFromContentProcess()) {
return IPC_OK();
}
// This is an ugly hack, mNoRemoteProcessDispatch is set to true when the
// event's PreventDefault() or StopScrollProcessForwarding() is called.
// And then, it'll be checked by ParamTraits<mozilla::WidgetEvent>::Write()
// whether the event is being sent to remote process unexpectedly.
// However, unfortunately, it cannot check the destination. Therefore,
// we need to clear the flag explicitly here because ParamTraits should
// keep checking the flag for avoiding regression.
localEvent.mFlags.mNoRemoteProcessDispatch = false;
SendReplyKeyEvent(localEvent, aUUID);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPriorityRealKeyEvent(
const WidgetKeyboardEvent& aEvent, const nsID& aUUID) {
return RecvRealKeyEvent(aEvent, aUUID);
}
mozilla::ipc::IPCResult BrowserChild::RecvCompositionEvent(
const WidgetCompositionEvent& aEvent) {
WidgetCompositionEvent localEvent(aEvent);
localEvent.mWidget = mPuppetWidget;
DispatchWidgetEventViaAPZ(localEvent);
Unused << SendOnEventNeedingAckHandled(aEvent.mMessage,
localEvent.mCompositionId);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPriorityCompositionEvent(
const WidgetCompositionEvent& aEvent) {
return RecvCompositionEvent(aEvent);
}
mozilla::ipc::IPCResult BrowserChild::RecvSelectionEvent(
const WidgetSelectionEvent& aEvent) {
WidgetSelectionEvent localEvent(aEvent);
localEvent.mWidget = mPuppetWidget;
DispatchWidgetEventViaAPZ(localEvent);
Unused << SendOnEventNeedingAckHandled(aEvent.mMessage, 0u);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPrioritySelectionEvent(
const WidgetSelectionEvent& aEvent) {
return RecvSelectionEvent(aEvent);
}
mozilla::ipc::IPCResult BrowserChild::RecvInsertText(
const nsAString& aStringToInsert) {
// Use normal event path to reach focused document.
WidgetContentCommandEvent localEvent(true, eContentCommandInsertText,
mPuppetWidget);
localEvent.mString = Some(nsString(aStringToInsert));
DispatchWidgetEventViaAPZ(localEvent);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNormalPriorityInsertText(
const nsAString& aStringToInsert) {
return RecvInsertText(aStringToInsert);
}
mozilla::ipc::IPCResult BrowserChild::RecvPasteTransferable(
const IPCTransferable& aTransferable) {
nsresult rv;
nsCOMPtr<nsITransferable> trans =
do_CreateInstance("@mozilla.org/widget/transferable;1", &rv);
NS_ENSURE_SUCCESS(rv, IPC_OK());
trans->Init(nullptr);
rv = nsContentUtils::IPCTransferableToTransferable(
aTransferable, true /* aAddDataFlavor */, trans,
false /* aFilterUnknownFlavors */);
NS_ENSURE_SUCCESS(rv, IPC_OK());
nsCOMPtr<nsIDocShell> ourDocShell = do_GetInterface(WebNavigation());
if (NS_WARN_IF(!ourDocShell)) {
return IPC_OK();
}
RefPtr<nsCommandParams> params = new nsCommandParams();
rv = params->SetISupports("transferable", trans);
NS_ENSURE_SUCCESS(rv, IPC_OK());
ourDocShell->DoCommandWithParams("cmd_pasteTransferable", params);
return IPC_OK();
}
#ifdef ACCESSIBILITY
a11y::PDocAccessibleChild* BrowserChild::AllocPDocAccessibleChild(
PDocAccessibleChild*, const uint64_t&,
const MaybeDiscardedBrowsingContext&) {
MOZ_ASSERT(false, "should never call this!");
return nullptr;
}
bool BrowserChild::DeallocPDocAccessibleChild(
a11y::PDocAccessibleChild* aChild) {
delete static_cast<mozilla::a11y::DocAccessibleChild*>(aChild);
return true;
}
#endif
RefPtr<VsyncMainChild> BrowserChild::GetVsyncChild() {
// Initializing VsyncMainChild here turns on per-BrowserChild Vsync for a
// given platform. Note: this only makes sense if nsWindow returns a
// window-specific VsyncSource.
#if defined(MOZ_WAYLAND)
if (IsWaylandEnabled()) {
if (auto* actor = static_cast<VsyncMainChild*>(
LoneManagedOrNullAsserts(ManagedPVsyncChild()))) {
return actor;
}
auto actor = MakeRefPtr<VsyncMainChild>();
if (!SendPVsyncConstructor(actor)) {
return nullptr;
}
return actor;
}
#endif
return nullptr;
}
mozilla::ipc::IPCResult BrowserChild::RecvLoadRemoteScript(
const nsAString& aURL, const bool& aRunInGlobalScope) {
if (!InitBrowserChildMessageManager())
// This can happen if we're half-destroyed. It's not a fatal
// error.
return IPC_OK();
JS::Rooted<JSObject*> mm(RootingCx(),
mBrowserChildMessageManager->GetOrCreateWrapper());
if (!mm) {
// This can happen if we're half-destroyed. It's not a fatal error.
return IPC_OK();
}
LoadScriptInternal(mm, aURL, !aRunInGlobalScope);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvAsyncMessage(
const nsAString& aMessage, const ClonedMessageData& aData) {
AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING("BrowserChild::RecvAsyncMessage",
OTHER, aMessage);
MMPrinter::Print("BrowserChild::RecvAsyncMessage", aMessage, aData);
if (!mBrowserChildMessageManager) {
return IPC_OK();
}
RefPtr<nsFrameMessageManager> mm =
mBrowserChildMessageManager->GetMessageManager();
// We should have a message manager if the global is alive, but it
// seems sometimes we don't. Assert in aurora/nightly, but don't
// crash in release builds.
MOZ_DIAGNOSTIC_ASSERT(mm);
if (!mm) {
return IPC_OK();
}
JS::Rooted<JSObject*> kungFuDeathGrip(
dom::RootingCx(), mBrowserChildMessageManager->GetWrapper());
StructuredCloneData data;
UnpackClonedMessageData(aData, data);
mm->ReceiveMessage(static_cast<EventTarget*>(mBrowserChildMessageManager),
nullptr, aMessage, false, &data, nullptr, IgnoreErrors());
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvSwappedWithOtherRemoteLoader(
const IPCTabContext& aContext) {
nsCOMPtr<nsIDocShell> ourDocShell = do_GetInterface(WebNavigation());
if (NS_WARN_IF(!ourDocShell)) {
return IPC_OK();
}
nsCOMPtr<nsPIDOMWindowOuter> ourWindow = ourDocShell->GetWindow();
if (NS_WARN_IF(!ourWindow)) {
return IPC_OK();
}
RefPtr<nsDocShell> docShell = static_cast<nsDocShell*>(ourDocShell.get());
nsCOMPtr<EventTarget> ourEventTarget = nsGlobalWindowOuter::Cast(ourWindow);
docShell->SetInFrameSwap(true);
nsContentUtils::FirePageShowEventForFrameLoaderSwap(
ourDocShell, ourEventTarget, false, true);
nsContentUtils::FirePageHideEventForFrameLoaderSwap(ourDocShell,
ourEventTarget, true);
// Owner content type may have changed, so store the possibly updated context
// and notify others.
MaybeInvalidTabContext maybeContext(aContext);
if (!maybeContext.IsValid()) {
NS_ERROR(nsPrintfCString("Received an invalid TabContext from "
"the parent process. (%s)",
maybeContext.GetInvalidReason())
.get());
MOZ_CRASH("Invalid TabContext received from the parent process.");
}
if (!UpdateTabContextAfterSwap(maybeContext.GetTabContext())) {
MOZ_CRASH("Update to TabContext after swap was denied.");
}
// Ignore previous value of mTriedBrowserInit since owner content has changed.
mTriedBrowserInit = true;
nsContentUtils::FirePageShowEventForFrameLoaderSwap(
ourDocShell, ourEventTarget, true, true);
docShell->SetInFrameSwap(false);
// This is needed to get visibility state right in cases when we swapped a
// visible tab (foreground in visible window) with a non-visible tab.
if (RefPtr<Document> doc = docShell->GetDocument()) {
doc->UpdateVisibilityState();
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvHandleAccessKey(
const WidgetKeyboardEvent& aEvent, nsTArray<uint32_t>&& aCharCodes) {
nsCOMPtr<Document> document(GetTopLevelDocument());
RefPtr<nsPresContext> pc = document->GetPresContext();
if (pc) {
if (!pc->EventStateManager()->HandleAccessKey(
&(const_cast<WidgetKeyboardEvent&>(aEvent)), pc, aCharCodes)) {
// If no accesskey was found, inform the parent so that accesskeys on
// menus can be handled.
WidgetKeyboardEvent localEvent(aEvent);
localEvent.mWidget = mPuppetWidget;
SendAccessKeyNotHandled(localEvent);
}
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvPrintPreview(
const PrintData& aPrintData, const MaybeDiscardedBrowsingContext& aSourceBC,
PrintPreviewResolver&& aCallback) {
#ifdef NS_PRINTING
// If we didn't succeed in passing off ownership of aCallback, then something
// went wrong.
auto sendCallbackError = MakeScopeExit([&] {
if (aCallback) {
// signal error
aCallback(PrintPreviewResultInfo(0, 0, false, false, false, {}, {}, {}));
}
});
if (NS_WARN_IF(aSourceBC.IsDiscarded())) {
return IPC_OK();
}
RefPtr<nsGlobalWindowOuter> sourceWindow;
if (!aSourceBC.IsNull()) {
sourceWindow = nsGlobalWindowOuter::Cast(aSourceBC.get()->GetDOMWindow());
if (NS_WARN_IF(!sourceWindow)) {
return IPC_OK();
}
} else {
nsCOMPtr<nsPIDOMWindowOuter> ourWindow = do_GetInterface(WebNavigation());
if (NS_WARN_IF(!ourWindow)) {
return IPC_OK();
}
sourceWindow = nsGlobalWindowOuter::Cast(ourWindow);
}
RefPtr<nsIPrintSettings> printSettings;
nsCOMPtr<nsIPrintSettingsService> printSettingsSvc =
do_GetService("@mozilla.org/gfx/printsettings-service;1");
if (NS_WARN_IF(!printSettingsSvc)) {
return IPC_OK();
}
printSettingsSvc->CreateNewPrintSettings(getter_AddRefs(printSettings));
if (NS_WARN_IF(!printSettings)) {
return IPC_OK();
}
printSettingsSvc->DeserializeToPrintSettings(aPrintData, printSettings);
nsCOMPtr<nsIDocShell> docShellToCloneInto;
if (!aSourceBC.IsNull()) {
docShellToCloneInto = do_GetInterface(WebNavigation());
if (NS_WARN_IF(!docShellToCloneInto)) {
return IPC_OK();
}
}
sourceWindow->Print(printSettings,
/* aRemotePrintJob = */ nullptr,
/* aListener = */ nullptr, docShellToCloneInto,
nsGlobalWindowOuter::IsPreview::Yes,
nsGlobalWindowOuter::IsForWindowDotPrint::No,
std::move(aCallback), nullptr, IgnoreErrors());
#endif
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvExitPrintPreview() {
#ifdef NS_PRINTING
nsCOMPtr<nsIWebBrowserPrint> webBrowserPrint =
do_GetInterface(ToSupports(WebNavigation()));
if (NS_WARN_IF(!webBrowserPrint)) {
return IPC_OK();
}
webBrowserPrint->ExitPrintPreview();
#endif
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::CommonPrint(
const MaybeDiscardedBrowsingContext& aBc, const PrintData& aPrintData,
RefPtr<BrowsingContext>* aCachedBrowsingContext) {
#ifdef NS_PRINTING
if (NS_WARN_IF(aBc.IsNullOrDiscarded())) {
return IPC_OK();
}
RefPtr<nsGlobalWindowOuter> outerWindow =
nsGlobalWindowOuter::Cast(aBc.get()->GetDOMWindow());
if (NS_WARN_IF(!outerWindow)) {
return IPC_OK();
}
nsCOMPtr<nsIPrintSettingsService> printSettingsSvc =
do_GetService("@mozilla.org/gfx/printsettings-service;1");
if (NS_WARN_IF(!printSettingsSvc)) {
return IPC_OK();
}
nsCOMPtr<nsIPrintSettings> printSettings;
nsresult rv =
printSettingsSvc->CreateNewPrintSettings(getter_AddRefs(printSettings));
if (NS_WARN_IF(NS_FAILED(rv))) {
return IPC_OK();
}
printSettingsSvc->DeserializeToPrintSettings(aPrintData, printSettings);
{
IgnoredErrorResult rv;
RefPtr printJob = static_cast<RemotePrintJobChild*>(
aPrintData.remotePrintJob().AsChild());
outerWindow->Print(
printSettings, printJob,
/* aListener = */ nullptr,
/* aWindowToCloneInto = */ nullptr, nsGlobalWindowOuter::IsPreview::No,
nsGlobalWindowOuter::IsForWindowDotPrint::No,
/* aPrintPreviewCallback = */ nullptr, aCachedBrowsingContext, rv);
if (NS_WARN_IF(rv.Failed())) {
return IPC_OK();
}
}
#endif
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvPrint(
const MaybeDiscardedBrowsingContext& aBc, const PrintData& aPrintData,
bool aReturnStaticClone, PrintResolver&& aResolve) {
#ifdef NS_PRINTING
RefPtr<BrowsingContext> browsingContext;
auto result = CommonPrint(aBc, aPrintData,
aReturnStaticClone ? &browsingContext : nullptr);
aResolve(browsingContext);
return result;
#else
aResolve(nullptr);
return IPC_OK();
#endif
}
mozilla::ipc::IPCResult BrowserChild::RecvPrintClonedPage(
const MaybeDiscardedBrowsingContext& aBc, const PrintData& aPrintData,
const MaybeDiscardedBrowsingContext& aClonedBc) {
#ifdef NS_PRINTING
if (aClonedBc.IsNullOrDiscarded()) {
return IPC_OK();
}
RefPtr<BrowsingContext> clonedBc = aClonedBc.get();
return CommonPrint(aBc, aPrintData, &clonedBc);
#else
return IPC_OK();
#endif
}
mozilla::ipc::IPCResult BrowserChild::RecvDestroyPrintClone(
const MaybeDiscardedBrowsingContext& aCachedPage) {
#ifdef NS_PRINTING
if (aCachedPage) {
RefPtr<nsPIDOMWindowOuter> window = aCachedPage->GetDOMWindow();
if (NS_WARN_IF(!window)) {
return IPC_OK();
}
window->Close();
}
#endif
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvUpdateNativeWindowHandle(
const uintptr_t& aNewHandle) {
#if defined(XP_WIN) && defined(ACCESSIBILITY)
mNativeWindowHandle = aNewHandle;
return IPC_OK();
#else
return IPC_FAIL_NO_REASON(this);
#endif
}
mozilla::ipc::IPCResult BrowserChild::RecvDestroy() {
MOZ_ASSERT(!mDestroyed);
mDestroyed = true;
nsTArray<PContentPermissionRequestChild*> childArray =
nsContentPermissionUtils::GetContentPermissionRequestChildById(
GetTabId());
// Need to close undeleted ContentPermissionRequestChilds before tab is
// closed.
for (auto& permissionRequestChild : childArray) {
auto* child = static_cast<RemotePermissionRequest*>(permissionRequestChild);
child->Destroy();
}
if (mBrowserChildMessageManager) {
// Message handlers are called from the event loop, so it better be safe to
// run script.
MOZ_ASSERT(nsContentUtils::IsSafeToRunScript());
mBrowserChildMessageManager->DispatchTrustedEvent(u"unload"_ns);
}
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
observerService->RemoveObserver(this, BEFORE_FIRST_PAINT);
// XXX what other code in ~BrowserChild() should we be running here?
DestroyWindow();
// Bounce through the event loop once to allow any delayed teardown runnables
// that were just generated to have a chance to run.
nsCOMPtr<nsIRunnable> deleteRunnable = new DelayedDeleteRunnable(this);
MOZ_ALWAYS_SUCCEEDS(NS_DispatchToCurrentThread(deleteRunnable));
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvRenderLayers(const bool& aEnabled) {
auto clearPaintWhileInterruptingJS = MakeScopeExit([&] {
// We might force a paint, or we might already have painted and this is a
// no-op. In either case, once we exit this scope, we need to alert the
// ProcessHangMonitor that we've finished responding to what might have
// been a request to force paint. This is so that the BackgroundHangMonitor
// for force painting can be made to wait again.
if (aEnabled) {
ProcessHangMonitor::ClearPaintWhileInterruptingJS();
}
});
if (aEnabled) {
ProcessHangMonitor::MaybeStartPaintWhileInterruptingJS();
}
mRenderLayers = aEnabled;
const bool wasVisible = IsVisible();
UpdateVisibility();
// If we just became visible, try to trigger a paint as soon as possible.
const bool becameVisible = !wasVisible && IsVisible();
if (!becameVisible) {
return IPC_OK();
}
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
if (!docShell) {
return IPC_OK();
}
// We don't use BrowserChildBase::GetPresShell() here because that would
// create a content viewer if one doesn't exist yet. Creating a content
// viewer can cause JS to run, which we want to avoid.
// nsIDocShell::GetPresShell returns null if no content viewer exists yet.
RefPtr<PresShell> presShell = docShell->GetPresShell();
if (!presShell) {
return IPC_OK();
}
if (nsIFrame* root = presShell->GetRootFrame()) {
root->SchedulePaint();
}
Telemetry::AutoTimer<Telemetry::TABCHILD_PAINT_TIME> timer;
// If we need to repaint, let's do that right away. No sense waiting until
// we get back to the event loop again. We suppress the display port so
// that we only paint what's visible. This ensures that the tab we're
// switching to paints as quickly as possible.
presShell->SuppressDisplayport(true);
if (nsContentUtils::IsSafeToRunScript()) {
WebWidget()->PaintNowIfNeeded();
} else {
RefPtr<nsViewManager> vm = presShell->GetViewManager();
if (nsView* view = vm->GetRootView()) {
presShell->PaintAndRequestComposite(view, PaintFlags::None);
}
}
presShell->SuppressDisplayport(false);
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvNavigateByKey(
const bool& aForward, const bool& aForDocumentNavigation) {
nsFocusManager* fm = nsFocusManager::GetFocusManager();
if (!fm) {
return IPC_OK();
}
RefPtr<Element> result;
nsCOMPtr<nsPIDOMWindowOuter> window = do_GetInterface(WebNavigation());
// Move to the first or last document.
{
uint32_t type =
aForward
? (aForDocumentNavigation
? static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_FIRSTDOC)
: StaticPrefs::dom_disable_tab_focus_to_root_element()
? static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_FIRST)
: static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_ROOT))
: (aForDocumentNavigation
? static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_LASTDOC)
: static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_LAST));
uint32_t flags = nsIFocusManager::FLAG_BYKEY;
if (aForward || aForDocumentNavigation) {
flags |= nsIFocusManager::FLAG_NOSCROLL;
}
fm->MoveFocus(window, nullptr, type, flags, getter_AddRefs(result));
}
// No valid root element was found, so move to the first focusable element.
if (!result && aForward && !aForDocumentNavigation) {
fm->MoveFocus(window, nullptr, nsIFocusManager::MOVEFOCUS_FIRST,
nsIFocusManager::FLAG_BYKEY, getter_AddRefs(result));
}
SendRequestFocus(false, CallerType::System);
return IPC_OK();
}
bool BrowserChild::InitBrowserChildMessageManager() {
mShouldSendWebProgressEventsToParent = true;
if (!mBrowserChildMessageManager) {
nsCOMPtr<nsPIDOMWindowOuter> window = do_GetInterface(WebNavigation());
NS_ENSURE_TRUE(window, false);
nsCOMPtr<EventTarget> chromeHandler = window->GetChromeEventHandler();
NS_ENSURE_TRUE(chromeHandler, false);
RefPtr<BrowserChildMessageManager> scope = mBrowserChildMessageManager =
new BrowserChildMessageManager(this);
MOZ_ALWAYS_TRUE(nsMessageManagerScriptExecutor::Init());
nsCOMPtr<nsPIWindowRoot> root = do_QueryInterface(chromeHandler);
if (NS_WARN_IF(!root)) {
mBrowserChildMessageManager = nullptr;
return false;
}
root->SetParentTarget(scope);
}
if (!mTriedBrowserInit) {
mTriedBrowserInit = true;
}
return true;
}
void BrowserChild::InitRenderingState(
const TextureFactoryIdentifier& aTextureFactoryIdentifier,
const layers::LayersId& aLayersId,
const CompositorOptions& aCompositorOptions) {
mPuppetWidget->InitIMEState();
MOZ_ASSERT(aLayersId.IsValid());
mTextureFactoryIdentifier = aTextureFactoryIdentifier;
// Pushing layers transactions directly to a separate
// compositor context.
PCompositorBridgeChild* compositorChild = CompositorBridgeChild::Get();
if (!compositorChild) {
mLayersConnected = Some(false);
NS_WARNING("failed to get CompositorBridgeChild instance");
return;
}
mCompositorOptions = Some(aCompositorOptions);
if (aLayersId.IsValid()) {
StaticMutexAutoLock lock(sBrowserChildrenMutex);
if (!sBrowserChildren) {
sBrowserChildren = new BrowserChildMap;
}
MOZ_ASSERT(!sBrowserChildren->Contains(uint64_t(aLayersId)));
sBrowserChildren->InsertOrUpdate(uint64_t(aLayersId), this);
mLayersId = aLayersId;
}
// Depending on timing, we might paint too early and fall back to basic
// layers. CreateRemoteLayerManager will destroy us if we manage to get a
// remote layer manager though, so that's fine.
MOZ_ASSERT(!mPuppetWidget->HasWindowRenderer() ||
mPuppetWidget->GetWindowRenderer()->GetBackendType() ==
layers::LayersBackend::LAYERS_NONE);
bool success = false;
if (mLayersConnected == Some(true)) {
success = CreateRemoteLayerManager(compositorChild);
}
if (success) {
MOZ_ASSERT(mLayersConnected == Some(true));
// Succeeded to create "remote" layer manager
ImageBridgeChild::IdentifyCompositorTextureHost(mTextureFactoryIdentifier);
gfx::VRManagerChild::IdentifyTextureHost(mTextureFactoryIdentifier);
InitAPZState();
} else {
mLayersConnected = Some(false);
}
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (observerService) {
observerService->AddObserver(this, BEFORE_FIRST_PAINT, false);
}
}
bool BrowserChild::CreateRemoteLayerManager(
mozilla::layers::PCompositorBridgeChild* aCompositorChild) {
MOZ_ASSERT(aCompositorChild);
return mPuppetWidget->CreateRemoteLayerManager(
[&](WebRenderLayerManager* aLayerManager) -> bool {
nsCString error;
return aLayerManager->Initialize(aCompositorChild,
wr::AsPipelineId(mLayersId),
&mTextureFactoryIdentifier, error);
});
}
void BrowserChild::InitAPZState() {
if (!mCompositorOptions->UseAPZ()) {
return;
}
auto* cbc = CompositorBridgeChild::Get();
// Initialize the ApzcTreeManager. This takes multiple casts because of ugly
// multiple inheritance.
PAPZCTreeManagerChild* baseProtocol =
cbc->SendPAPZCTreeManagerConstructor(mLayersId);
if (!baseProtocol) {
MOZ_ASSERT(false,
"Allocating a TreeManager should not fail with APZ enabled");
return;
}
APZCTreeManagerChild* derivedProtocol =
static_cast<APZCTreeManagerChild*>(baseProtocol);
mApzcTreeManager = RefPtr<IAPZCTreeManager>(derivedProtocol);
// Initialize the GeckoContentController for this tab. We don't hold a
// reference because we don't need it. The ContentProcessController will hold
// a reference to the tab, and will be destroyed by the compositor or ipdl
// during destruction.
RefPtr<GeckoContentController> contentController =
new ContentProcessController(this);
APZChild* apzChild = new APZChild(contentController);
cbc->SendPAPZConstructor(apzChild, mLayersId);
}
IPCResult BrowserChild::RecvUpdateEffects(const EffectsInfo& aEffects) {
bool needInvalidate = false;
if (mEffectsInfo.IsVisible() && aEffects.IsVisible() &&
mEffectsInfo != aEffects) {
// If we are staying visible and either the visrect or scale changed we need
// to invalidate
needInvalidate = true;
}
mEffectsInfo = aEffects;
UpdateVisibility();
if (needInvalidate) {
if (nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation())) {
// We don't use BrowserChildBase::GetPresShell() here because that would
// create a content viewer if one doesn't exist yet. Creating a content
// viewer can cause JS to run, which we want to avoid.
// nsIDocShell::GetPresShell returns null if no content viewer exists yet.
if (RefPtr<PresShell> presShell = docShell->GetPresShell()) {
if (nsIFrame* root = presShell->GetRootFrame()) {
root->InvalidateFrame();
}
}
}
}
return IPC_OK();
}
bool BrowserChild::IsVisible() {
return mPuppetWidget && mPuppetWidget->IsVisible();
}
void BrowserChild::UpdateVisibility() {
const bool shouldBeVisible = [&] {
// If we're known to be visibility: hidden / display: none, just return
// false here, we're pretty sure we don't want to be considered visible
// here.
if (mBrowsingContext && mBrowsingContext->IsUnderHiddenEmbedderElement()) {
return false;
}
// For OOP iframes, include viewport visibility. For top-level <browser>
// elements we don't use this, because the front-end relies on using
// `mRenderLayers` when invisible for tab warming purposes.
//
// An alternative, maybe more consistent approach would be to add an opt-in
// into this behavior for top-level tabs managed by the tab-switcher
// instead...
if (!mIsTopLevel && !mEffectsInfo.IsVisible()) {
return false;
}
// If we're explicitly told not to render layers, we're also invisible.
if (!mRenderLayers) {
return false;
}
return true;
}();
const bool isVisible = IsVisible();
if (shouldBeVisible == isVisible) {
return;
}
if (shouldBeVisible) {
MakeVisible();
} else {
MakeHidden();
}
}
void BrowserChild::MakeVisible() {
if (IsVisible()) {
return;
}
if (mPuppetWidget) {
mPuppetWidget->Show(true);
}
PresShellActivenessMaybeChanged();
}
void BrowserChild::MakeHidden() {
if (!IsVisible()) {
return;
}
// Due to the nested event loop in ContentChild::ProvideWindowCommon,
// it's possible to be told to become hidden before we're finished
// setting up a layer manager. We should skip clearing cached layers
// in that case, since doing so might accidentally put is into
// BasicLayers mode.
if (mPuppetWidget) {
if (mPuppetWidget->HasWindowRenderer()) {
ClearCachedResources();
}
mPuppetWidget->Show(false);
}
PresShellActivenessMaybeChanged();
}
IPCResult BrowserChild::RecvPreserveLayers(bool aPreserve) {
mIsPreservingLayers = aPreserve;
PresShellActivenessMaybeChanged();
return IPC_OK();
}
void BrowserChild::PresShellActivenessMaybeChanged() {
// We don't use BrowserChildBase::GetPresShell() here because that would
// create a content viewer if one doesn't exist yet. Creating a content
// viewer can cause JS to run, which we want to avoid.
// nsIDocShell::GetPresShell returns null if no content viewer exists yet.
//
// When this method is called we don't want to go through the browsing context
// because we don't want to change the visibility state of the document, which
// has side effects like firing events to content, unblocking media playback,
// unthrottling timeouts... PresShell activeness has a lot less side effects.
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
if (!docShell) {
return;
}
RefPtr<PresShell> presShell = docShell->GetPresShell();
if (!presShell) {
return;
}
presShell->ActivenessMaybeChanged();
}
NS_IMETHODIMP
BrowserChild::GetMessageManager(ContentFrameMessageManager** aResult) {
RefPtr<ContentFrameMessageManager> mm(mBrowserChildMessageManager);
mm.forget(aResult);
return *aResult ? NS_OK : NS_ERROR_FAILURE;
}
void BrowserChild::SendRequestFocus(bool aCanFocus, CallerType aCallerType) {
nsFocusManager* fm = nsFocusManager::GetFocusManager();
if (!fm) {
return;
}
nsCOMPtr<nsPIDOMWindowOuter> window = do_GetInterface(WebNavigation());
if (!window) {
return;
}
BrowsingContext* focusedBC = fm->GetFocusedBrowsingContext();
if (focusedBC == window->GetBrowsingContext()) {
// BrowsingContext has the focus already, do not request again.
return;
}
PBrowserChild::SendRequestFocus(aCanFocus, aCallerType);
}
NS_IMETHODIMP
BrowserChild::GetTabId(uint64_t* aId) {
*aId = GetTabId();
return NS_OK;
}
NS_IMETHODIMP
BrowserChild::GetChromeOuterWindowID(uint64_t* aId) {
*aId = ChromeOuterWindowID();
return NS_OK;
}
bool BrowserChild::DoSendBlockingMessage(
const nsAString& aMessage, StructuredCloneData& aData,
nsTArray<StructuredCloneData>* aRetVal) {
ClonedMessageData data;
if (!BuildClonedMessageData(aData, data)) {
return false;
}
return SendSyncMessage(PromiseFlatString(aMessage), data, aRetVal);
}
nsresult BrowserChild::DoSendAsyncMessage(const nsAString& aMessage,
StructuredCloneData& aData) {
ClonedMessageData data;
if (!BuildClonedMessageData(aData, data)) {
return NS_ERROR_DOM_DATA_CLONE_ERR;
}
if (!SendAsyncMessage(PromiseFlatString(aMessage), data)) {
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
/* static */
nsTArray<RefPtr<BrowserChild>> BrowserChild::GetAll() {
StaticMutexAutoLock lock(sBrowserChildrenMutex);
if (!sBrowserChildren) {
return {};
}
return ToTArray<nsTArray<RefPtr<BrowserChild>>>(sBrowserChildren->Values());
}
BrowserChild* BrowserChild::GetFrom(PresShell* aPresShell) {
Document* doc = aPresShell->GetDocument();
if (!doc) {
return nullptr;
}
nsCOMPtr<nsIDocShell> docShell(doc->GetDocShell());
return GetFrom(docShell);
}
BrowserChild* BrowserChild::GetFrom(layers::LayersId aLayersId) {
StaticMutexAutoLock lock(sBrowserChildrenMutex);
if (!sBrowserChildren) {
return nullptr;
}
return sBrowserChildren->Get(uint64_t(aLayersId));
}
void BrowserChild::DidComposite(mozilla::layers::TransactionId aTransactionId,
const TimeStamp& aCompositeStart,
const TimeStamp& aCompositeEnd) {
MOZ_ASSERT(mPuppetWidget);
RefPtr<WebRenderLayerManager> lm =
mPuppetWidget->GetWindowRenderer()->AsWebRender();
MOZ_ASSERT(lm);
if (lm) {
lm->DidComposite(aTransactionId, aCompositeStart, aCompositeEnd);
}
}
void BrowserChild::ClearCachedResources() {
MOZ_ASSERT(mPuppetWidget);
RefPtr<WebRenderLayerManager> lm =
mPuppetWidget->GetWindowRenderer()->AsWebRender();
if (lm) {
lm->ClearCachedResources();
}
if (nsCOMPtr<Document> document = GetTopLevelDocument()) {
nsPresContext* presContext = document->GetPresContext();
if (presContext) {
presContext->NotifyPaintStatusReset();
}
}
}
void BrowserChild::SchedulePaint() {
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
if (!docShell) {
return;
}
// We don't use BrowserChildBase::GetPresShell() here because that would
// create a content viewer if one doesn't exist yet. Creating a content viewer
// can cause JS to run, which we want to avoid. nsIDocShell::GetPresShell
// returns null if no content viewer exists yet.
if (RefPtr<PresShell> presShell = docShell->GetPresShell()) {
if (nsIFrame* root = presShell->GetRootFrame()) {
root->SchedulePaint();
}
}
}
void BrowserChild::ReinitRendering() {
MOZ_ASSERT(mLayersId.IsValid());
// In some cases, like when we create a windowless browser,
// RemoteLayerTreeOwner/BrowserChild is not connected to a compositor.
if (mLayersConnectRequested.isNothing() ||
mLayersConnectRequested == Some(false)) {
return;
}
// Before we establish a new PLayerTransaction, we must connect our layer tree
// id, CompositorBridge, and the widget compositor all together again.
// Normally this happens in BrowserParent before BrowserChild is given
// rendering information.
//
// In this case, we will send a sync message to our BrowserParent, which in
// turn will send a sync message to the Compositor of the widget owning this
// tab. This guarantees the correct association is in place before our
// PLayerTransaction constructor message arrives on the cross-process
// compositor bridge.
CompositorOptions options;
SendEnsureLayersConnected(&options);
mCompositorOptions = Some(options);
bool success = false;
RefPtr<CompositorBridgeChild> cb = CompositorBridgeChild::Get();
if (cb) {
success = CreateRemoteLayerManager(cb);
}
if (!success) {
NS_WARNING("failed to recreate layer manager");
return;
}
mLayersConnected = Some(true);
ImageBridgeChild::IdentifyCompositorTextureHost(mTextureFactoryIdentifier);
gfx::VRManagerChild::IdentifyTextureHost(mTextureFactoryIdentifier);
InitAPZState();
if (nsCOMPtr<Document> doc = GetTopLevelDocument()) {
doc->NotifyLayerManagerRecreated();
}
if (mRenderLayers) {
SchedulePaint();
}
}
void BrowserChild::ReinitRenderingForDeviceReset() {
RefPtr<WebRenderLayerManager> lm =
mPuppetWidget->GetWindowRenderer()->AsWebRender();
if (lm) {
lm->DoDestroy(/* aIsSync */ true);
}
// Proceed with destroying and recreating the layer manager.
ReinitRendering();
}
NS_IMETHODIMP
BrowserChild::OnShowTooltip(int32_t aXCoords, int32_t aYCoords,
const nsAString& aTipText,
const nsAString& aTipDir) {
nsString str(aTipText);
nsString dir(aTipDir);
SendShowTooltip(aXCoords, aYCoords, str, dir);
return NS_OK;
}
NS_IMETHODIMP
BrowserChild::OnHideTooltip() {
SendHideTooltip();
return NS_OK;
}
void BrowserChild::NotifyJankedAnimations(
const nsTArray<uint64_t>& aJankedAnimations) {
MOZ_ASSERT(mPuppetWidget);
RefPtr<WebRenderLayerManager> lm =
mPuppetWidget->GetWindowRenderer()->AsWebRender();
if (lm) {
lm->UpdatePartialPrerenderedAnimations(aJankedAnimations);
}
}
mozilla::ipc::IPCResult BrowserChild::RecvUIResolutionChanged(
const float& aDpi, const int32_t& aRounding, const double& aScale) {
ScreenIntSize oldScreenSize = GetInnerSize();
if (aDpi > 0) {
mPuppetWidget->UpdateBackingScaleCache(aDpi, aRounding, aScale);
}
ScreenIntSize screenSize = GetInnerSize();
if (mHasValidInnerSize && oldScreenSize != screenSize) {
ScreenIntRect screenRect = GetOuterRect();
// See RecvUpdateDimensions for the order of these operations.
nsCOMPtr<nsIBaseWindow> baseWin = do_QueryInterface(WebNavigation());
baseWin->SetPositionAndSize(0, 0, screenSize.width, screenSize.height,
nsIBaseWindow::eRepaint);
mPuppetWidget->Resize(screenRect.x + mClientOffset.x + mChromeOffset.x,
screenRect.y + mClientOffset.y + mChromeOffset.y,
screenSize.width, screenSize.height, true);
}
nsCOMPtr<Document> document(GetTopLevelDocument());
RefPtr<nsPresContext> presContext =
document ? document->GetPresContext() : nullptr;
if (presContext) {
presContext->UIResolutionChangedSync();
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvSafeAreaInsetsChanged(
const mozilla::ScreenIntMargin& aSafeAreaInsets) {
mPuppetWidget->UpdateSafeAreaInsets(aSafeAreaInsets);
nsCOMPtr<nsIScreenManager> screenMgr =
do_GetService("@mozilla.org/gfx/screenmanager;1");
ScreenIntMargin currentSafeAreaInsets;
if (screenMgr) {
// aSafeAreaInsets is for current screen. But we have to calculate
// safe insets for content window.
int32_t x, y, cx, cy;
GetDimensions(DimensionKind::Outer, &x, &y, &cx, &cy);
nsCOMPtr<nsIScreen> screen;
screenMgr->ScreenForRect(x, y, cx, cy, getter_AddRefs(screen));
if (screen) {
LayoutDeviceIntRect windowRect(x + mClientOffset.x + mChromeOffset.x,
y + mClientOffset.y + mChromeOffset.y, cx,
cy);
currentSafeAreaInsets = nsContentUtils::GetWindowSafeAreaInsets(
screen, aSafeAreaInsets, windowRect);
}
}
if (nsCOMPtr<Document> document = GetTopLevelDocument()) {
nsPresContext* presContext = document->GetPresContext();
if (presContext) {
presContext->SetSafeAreaInsets(currentSafeAreaInsets);
}
}
// https://github.com/w3c/csswg-drafts/issues/4670
// Actually we don't set this value on sub document. This behaviour is
// same as Blink that safe area insets isn't set on sub document.
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvAllowScriptsToClose() {
nsCOMPtr<nsPIDOMWindowOuter> window = do_GetInterface(WebNavigation());
if (window) {
nsGlobalWindowOuter::Cast(window)->AllowScriptsToClose();
}
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvReleaseAllPointerCapture() {
PointerEventHandler::ReleaseAllPointerCapture();
return IPC_OK();
}
mozilla::ipc::IPCResult BrowserChild::RecvReleasePointerLock() {
PointerLockManager::Unlock();
return IPC_OK();
}
PPaymentRequestChild* BrowserChild::AllocPPaymentRequestChild() {
MOZ_CRASH(
"We should never be manually allocating PPaymentRequestChild actors");
return nullptr;
}
bool BrowserChild::DeallocPPaymentRequestChild(PPaymentRequestChild* actor) {
delete actor;
return true;
}
ScreenIntSize BrowserChild::GetInnerSize() {
LayoutDeviceIntSize innerSize =
RoundedToInt(mUnscaledInnerSize * mPuppetWidget->GetDefaultScale());
return ViewAs<ScreenPixel>(
innerSize, PixelCastJustification::LayoutDeviceIsScreenForTabDims);
};
Maybe<nsRect> BrowserChild::GetVisibleRect() const {
if (mIsTopLevel) {
// We are conservative about visible rects for top-level browsers to avoid
// artifacts when resizing
return Nothing();
}
return mEffectsInfo.mVisibleRect;
}
Maybe<LayoutDeviceRect>
BrowserChild::GetTopLevelViewportVisibleRectInSelfCoords() const {
if (mIsTopLevel) {
return Nothing();
}
if (!mChildToParentConversionMatrix) {
// We have no way to tell this remote document visible rect right now.
return Nothing();
}
Maybe<LayoutDeviceToLayoutDeviceMatrix4x4> inverse =
mChildToParentConversionMatrix->MaybeInverse();
if (!inverse) {
return Nothing();
}
// Convert the remote document visible rect to the coordinate system of the
// iframe document.
Maybe<LayoutDeviceRect> rect = UntransformBy(
*inverse,
ViewAs<LayoutDevicePixel>(
mTopLevelViewportVisibleRectInBrowserCoords,
PixelCastJustification::ContentProcessIsLayerInUiProcess),
LayoutDeviceRect::MaxIntRect());
if (!rect) {
return Nothing();
}
return rect;
}
ScreenIntRect BrowserChild::GetOuterRect() {
LayoutDeviceIntRect outerRect =
RoundedToInt(mUnscaledOuterRect * mPuppetWidget->GetDefaultScale());
return ViewAs<ScreenPixel>(
outerRect, PixelCastJustification::LayoutDeviceIsScreenForTabDims);
}
void BrowserChild::PaintWhileInterruptingJS() {
if (!IPCOpen() || !mPuppetWidget || !mPuppetWidget->HasWindowRenderer()) {
// Don't bother doing anything now. Better to wait until we receive the
// message on the PContent channel.
return;
}
MOZ_DIAGNOSTIC_ASSERT(nsContentUtils::IsSafeToRunScript());
nsAutoScriptBlocker scriptBlocker;
RecvRenderLayers(/* aEnabled = */ true);
}
void BrowserChild::UnloadLayersWhileInterruptingJS() {
if (!IPCOpen() || !mPuppetWidget || !mPuppetWidget->HasWindowRenderer()) {
// Don't bother doing anything now. Better to wait until we receive the
// message on the PContent channel.
return;
}
MOZ_DIAGNOSTIC_ASSERT(nsContentUtils::IsSafeToRunScript());
nsAutoScriptBlocker scriptBlocker;
RecvRenderLayers(/* aEnabled = */ false);
}
nsresult BrowserChild::CanCancelContentJS(
nsIRemoteTab::NavigationType aNavigationType, int32_t aNavigationIndex,
nsIURI* aNavigationURI, int32_t aEpoch, bool* aCanCancel) {
nsresult rv;
*aCanCancel = false;
if (aEpoch <= mCancelContentJSEpoch) {
// The next page loaded before we got here, so we shouldn't try to cancel
// the content JS.
return NS_OK;
}
// If we have session history in the parent we've already performed
// the checks following, so we can return early.
if (mozilla::SessionHistoryInParent()) {
*aCanCancel = true;
return NS_OK;
}
nsCOMPtr<nsIDocShell> docShell = do_GetInterface(WebNavigation());
nsCOMPtr<nsISHistory> history;
if (docShell) {
history = nsDocShell::Cast(docShell)->GetSessionHistory()->LegacySHistory();
}
if (!history) {
return NS_ERROR_FAILURE;
}
int32_t current;
rv = history->GetIndex(&current);
NS_ENSURE_SUCCESS(rv, rv);
if (current == -1) {
// This tab has no history! Just return.
return NS_OK;
}
nsCOMPtr<nsISHEntry> entry;
rv = history->GetEntryAtIndex(current, getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> currentURI = entry->GetURI();
if (!currentURI->SchemeIs("http") && !currentURI->SchemeIs("https") &&
!currentURI->SchemeIs("file")) {
// Only cancel content JS for http(s) and file URIs. Other URIs are probably
// internal and we should just let them run to completion.
return NS_OK;
}
if (aNavigationType == nsIRemoteTab::NAVIGATE_BACK) {
aNavigationIndex = current - 1;
} else if (aNavigationType == nsIRemoteTab::NAVIGATE_FORWARD) {
aNavigationIndex = current + 1;
} else if (aNavigationType == nsIRemoteTab::NAVIGATE_URL) {
if (!aNavigationURI) {
return NS_ERROR_FAILURE;
}
if (aNavigationURI->SchemeIs("javascript")) {
// "javascript:" URIs don't (necessarily) trigger navigation to a
// different page, so don't allow the current page's JS to terminate.
return NS_OK;
}
// If navigating directly to a URL (e.g. via hitting Enter in the location
// bar), then we can cancel anytime the next URL is different from the
// current, *excluding* the ref ("#").
bool equals;
rv = currentURI->EqualsExceptRef(aNavigationURI, &equals);
NS_ENSURE_SUCCESS(rv, rv);
*aCanCancel = !equals;
return NS_OK;
}
// Note: aNavigationType may also be NAVIGATE_INDEX, in which case we don't
// need to do anything special.
int32_t delta = aNavigationIndex > current ? 1 : -1;
for (int32_t i = current + delta; i != aNavigationIndex + delta; i += delta) {
nsCOMPtr<nsISHEntry> nextEntry;
// If `i` happens to be negative, this call will fail (which is what we
// would want to happen).
rv = history->GetEntryAtIndex(i, getter_AddRefs(nextEntry));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsISHEntry> laterEntry = delta == 1 ? nextEntry : entry;
nsCOMPtr<nsIURI> thisURI = entry->GetURI();
nsCOMPtr<nsIURI> nextURI = nextEntry->GetURI();
// If we changed origin and the load wasn't in a subframe, we know it was
// a full document load, so we can cancel the content JS safely.
if (!laterEntry->GetIsSubFrame()) {
nsAutoCString thisHost;
rv = thisURI->GetPrePath(thisHost);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString nextHost;
rv = nextURI->GetPrePath(nextHost);
NS_ENSURE_SUCCESS(rv, rv);
if (!thisHost.Equals(nextHost)) {
*aCanCancel = true;
return NS_OK;
}
}
entry = nextEntry;
}
return NS_OK;
}
NS_IMETHODIMP BrowserChild::OnStateChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aStateFlags,
nsresult aStatus) {
if (!IPCOpen() || !mShouldSendWebProgressEventsToParent) {
return NS_OK;
}
// We shouldn't need to notify the parent of redirect state changes, since
// with DocumentChannel that only happens when we switch to the real channel,
// and that's an implementation detail that we can hide.
if (aStateFlags & nsIWebProgressListener::STATE_IS_REDIRECTED_DOCUMENT) {
return NS_OK;
}
// Our OnStateChange call must have provided the nsIDocShell which the source
// comes from. We'll use this to locate the corresponding BrowsingContext in
// the parent process.
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(aWebProgress);
if (!docShell) {
MOZ_ASSERT_UNREACHABLE("aWebProgress is null or not a nsIDocShell?");
return NS_ERROR_UNEXPECTED;
}
WebProgressData webProgressData;
Maybe<WebProgressStateChangeData> stateChangeData;
RequestData requestData;
MOZ_TRY(PrepareProgressListenerData(aWebProgress, aRequest, webProgressData,
requestData));
RefPtr<BrowsingContext> browsingContext = docShell->GetBrowsingContext();
if (browsingContext->IsTopContent()) {
stateChangeData.emplace();
stateChangeData->isNavigating() = docShell->GetIsNavigating();
stateChangeData->mayEnableCharacterEncodingMenu() =
docShell->GetMayEnableCharacterEncodingMenu();
RefPtr<Document> document = browsingContext->GetExtantDocument();
if (document && aStateFlags & nsIWebProgressListener::STATE_STOP) {
document->GetContentType(stateChangeData->contentType());
document->GetCharacterSet(stateChangeData->charset());
stateChangeData->documentURI() = document->GetDocumentURIObject();
} else {
stateChangeData->contentType().SetIsVoid(true);
stateChangeData->charset().SetIsVoid(true);
}
}
Unused << SendOnStateChange(webProgressData, requestData, aStateFlags,
aStatus, stateChangeData);
return NS_OK;
}
NS_IMETHODIMP BrowserChild::OnProgressChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
int32_t aCurSelfProgress,
int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress) {
if (!IPCOpen() || !mShouldSendWebProgressEventsToParent) {
return NS_OK;
}
// FIXME: We currently ignore ProgressChange events from out-of-process
// subframes both here and in BrowserParent. We may want to change this
// behaviour in the future.
if (!GetBrowsingContext()->IsTopContent()) {
return NS_OK;
}
// As we're being filtered by nsBrowserStatusFilter, we will be passed either
// nullptr or 0 for all arguments other than aCurTotalProgress and
// aMaxTotalProgress. Don't bother sending them.
MOZ_ASSERT(!aWebProgress);
MOZ_ASSERT(!aRequest);
MOZ_ASSERT(aCurSelfProgress == 0);
MOZ_ASSERT(aMaxSelfProgress == 0);
Unused << SendOnProgressChange(aCurTotalProgress, aMaxTotalProgress);
return NS_OK;
}
NS_IMETHODIMP BrowserChild::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI* aLocation,
uint32_t aFlags) {
if (!IPCOpen() || !mShouldSendWebProgressEventsToParent) {
return NS_OK;
}
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(aWebProgress);
if (!docShell) {
MOZ_ASSERT_UNREACHABLE("aWebProgress is null or not a nsIDocShell?");
return NS_ERROR_UNEXPECTED;
}
RefPtr<BrowsingContext> browsingContext = docShell->GetBrowsingContext();
RefPtr<Document> document = browsingContext->GetExtantDocument();
if (!document) {
return NS_OK;
}
WebProgressData webProgressData;
RequestData requestData;
MOZ_TRY(PrepareProgressListenerData(aWebProgress, aRequest, webProgressData,
requestData));
Maybe<WebProgressLocationChangeData> locationChangeData;
bool canGoBack = false;
bool canGoForward = false;
if (!mozilla::SessionHistoryInParent()) {
MOZ_TRY(WebNavigation()->GetCanGoBack(&canGoBack));
MOZ_TRY(WebNavigation()->GetCanGoForward(&canGoForward));
}
if (browsingContext->IsTopContent()) {
MOZ_ASSERT(
browsingContext == GetBrowsingContext(),
"Toplevel content BrowsingContext which isn't GetBrowsingContext()?");
locationChangeData.emplace();
document->GetContentType(locationChangeData->contentType());
locationChangeData->isNavigating() = docShell->GetIsNavigating();
locationChangeData->documentURI() = document->GetDocumentURIObject();
document->GetTitle(locationChangeData->title());
document->GetCharacterSet(locationChangeData->charset());
locationChangeData->mayEnableCharacterEncodingMenu() =
docShell->GetMayEnableCharacterEncodingMenu();
locationChangeData->contentPrincipal() = document->NodePrincipal();
locationChangeData->contentPartitionedPrincipal() =
document->PartitionedPrincipal();
locationChangeData->csp() = document->GetCsp();
locationChangeData->referrerInfo() = document->ReferrerInfo();
locationChangeData->isSyntheticDocument() = document->IsSyntheticDocument();
if (nsCOMPtr<nsILoadGroup> loadGroup = document->GetDocumentLoadGroup()) {
uint64_t requestContextID = 0;
MOZ_TRY(loadGroup->GetRequestContextID(&requestContextID));
locationChangeData->requestContextID() = Some(requestContextID);
}
#ifdef MOZ_CRASHREPORTER
if (CrashReporter::GetEnabled()) {
nsCOMPtr<nsIURI> annotationURI;
nsresult rv =
NS_MutateURI(aLocation).SetUserPass(""_ns).Finalize(annotationURI);
if (NS_FAILED(rv)) {
// Ignore failures on about: URIs.
annotationURI = aLocation;
}
CrashReporter::RecordAnnotationNSCString(
CrashReporter::Annotation::URL, annotationURI->GetSpecOrDefault());
}
#endif
}
Unused << SendOnLocationChange(webProgressData, requestData, aLocation,
aFlags, canGoBack, canGoForward,
locationChangeData);
return NS_OK;
}
NS_IMETHODIMP BrowserChild::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsresult aStatus,
const char16_t* aMessage) {
if (!IPCOpen() || !mShouldSendWebProgressEventsToParent) {
return NS_OK;
}
// FIXME: We currently ignore StatusChange from out-of-process subframes both
// here and in BrowserParent. We may want to change this behaviour in the
// future.
if (!GetBrowsingContext()->IsTopContent()) {
return NS_OK;
}
// As we're being filtered by nsBrowserStatusFilter, we will be passed either
// nullptr or NS_OK for all arguments other than aMessage. Don't bother
// sending them.
MOZ_ASSERT(!aWebProgress);
MOZ_ASSERT(!aRequest);
MOZ_ASSERT(aStatus == NS_OK);
Unused << SendOnStatusChange(nsDependentString(aMessage));
return NS_OK;
}
NS_IMETHODIMP BrowserChild::OnSecurityChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aState) {
// Security changes are now handled entirely in the parent process
// so we don't need to worry about forwarding them (and we shouldn't
// be receiving any to forward).
return NS_OK;
}
NS_IMETHODIMP BrowserChild::OnContentBlockingEvent(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aEvent) {
// The OnContentBlockingEvent only happenes in the parent process. It should
// not be seen in the content process.
MOZ_DIAGNOSTIC_ASSERT(
false, "OnContentBlockingEvent should not be seen in content process.");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP BrowserChild::OnProgressChange64(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
int64_t aCurSelfProgress,
int64_t aMaxSelfProgress,
int64_t aCurTotalProgress,
int64_t aMaxTotalProgress) {
// All the events we receive are filtered through an nsBrowserStatusFilter,
// which accepts ProgressChange64 events, but truncates the progress values to
// uint32_t and calls OnProgressChange.
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP BrowserChild::OnRefreshAttempted(nsIWebProgress* aWebProgress,
nsIURI* aRefreshURI,
uint32_t aMillis, bool aSameURI,
bool* aOut) {
NS_ENSURE_ARG_POINTER(aOut);
*aOut = true;
return NS_OK;
}
NS_IMETHODIMP BrowserChild::NotifyNavigationFinished() {
Unused << SendNavigationFinished();
return NS_OK;
}
nsresult BrowserChild::PrepareRequestData(nsIRequest* aRequest,
RequestData& aRequestData) {
nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
if (!channel) {
aRequestData.requestURI() = nullptr;
return NS_OK;
}
nsresult rv = channel->GetURI(getter_AddRefs(aRequestData.requestURI()));
NS_ENSURE_SUCCESS(rv, rv);
rv = channel->GetOriginalURI(
getter_AddRefs(aRequestData.originalRequestURI()));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIClassifiedChannel> classifiedChannel = do_QueryInterface(channel);
if (classifiedChannel) {
rv = classifiedChannel->GetMatchedList(aRequestData.matchedList());
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
nsresult BrowserChild::PrepareProgressListenerData(
nsIWebProgress* aWebProgress, nsIRequest* aRequest,
WebProgressData& aWebProgressData, RequestData& aRequestData) {
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(aWebProgress);
if (!docShell) {
MOZ_ASSERT_UNREACHABLE("aWebProgress is null or not a nsIDocShell?");
return NS_ERROR_UNEXPECTED;
}
aWebProgressData.browsingContext() = docShell->GetBrowsingContext();
nsresult rv = aWebProgress->GetLoadType(&aWebProgressData.loadType());
NS_ENSURE_SUCCESS(rv, rv);
return PrepareRequestData(aRequest, aRequestData);
}
void BrowserChild::UpdateSessionStore() {
if (mSessionStoreChild) {
mSessionStoreChild->UpdateSessionStore();
}
}
#ifdef XP_WIN
RefPtr<PBrowserChild::IsWindowSupportingProtectedMediaPromise>
BrowserChild::DoesWindowSupportProtectedMedia() {
MOZ_ASSERT(
NS_IsMainThread(),
"Protected media support check should be done on main thread only.");
if (mWindowSupportsProtectedMedia) {
// If we've already checked and have a cached result, resolve with that.
return IsWindowSupportingProtectedMediaPromise::CreateAndResolve(
mWindowSupportsProtectedMedia.value(), __func__);
}
RefPtr<BrowserChild> self = this;
// We chain off the promise rather than passing it directly so we can cache
// the result and use that for future calls.
return SendIsWindowSupportingProtectedMedia(ChromeOuterWindowID())
->Then(
GetCurrentSerialEventTarget(), __func__,
[self](bool isSupported) {
// If a result was cached while this check was inflight, ensure the
// results match.
MOZ_ASSERT_IF(
self->mWindowSupportsProtectedMedia,
self->mWindowSupportsProtectedMedia.value() == isSupported);
// Cache the response as it will not change during the lifetime
// of this object.
self->mWindowSupportsProtectedMedia = Some(isSupported);
return IsWindowSupportingProtectedMediaPromise::CreateAndResolve(
self->mWindowSupportsProtectedMedia.value(), __func__);
},
[](ResponseRejectReason reason) {
return IsWindowSupportingProtectedMediaPromise::CreateAndReject(
reason, __func__);
});
}
#endif
void BrowserChild::NotifyContentBlockingEvent(
uint32_t aEvent, nsIChannel* aChannel, bool aBlocked,
const nsACString& aTrackingOrigin,
const nsTArray<nsCString>& aTrackingFullHashes,
const Maybe<
mozilla::ContentBlockingNotifier::StorageAccessPermissionGrantedReason>&
aReason,
const Maybe<ContentBlockingNotifier::CanvasFingerprinter>&
aCanvasFingerprinter,
const Maybe<bool> aCanvasFingerprinterKnownText) {
if (!IPCOpen()) {
return;
}
RequestData requestData;
if (NS_SUCCEEDED(PrepareRequestData(aChannel, requestData))) {
Unused << SendNotifyContentBlockingEvent(
aEvent, requestData, aBlocked, PromiseFlatCString(aTrackingOrigin),
aTrackingFullHashes, aReason, aCanvasFingerprinter,
aCanvasFingerprinterKnownText);
}
}
NS_IMETHODIMP
BrowserChild::ContentTransformsReceived(JSContext* aCx,
dom::Promise** aPromise) {
auto* globalObject = xpc::CurrentNativeGlobal(aCx);
ErrorResult rv;
if (mChildToParentConversionMatrix) {
// Already received content transforms
RefPtr<Promise> promise =
Promise::CreateResolvedWithUndefined(globalObject, rv);
promise.forget(aPromise);
return rv.StealNSResult();
}
if (!mContentTransformPromise) {
mContentTransformPromise = Promise::Create(globalObject, rv);
}
MOZ_ASSERT(globalObject == mContentTransformPromise->GetGlobalObject());
NS_IF_ADDREF(*aPromise = mContentTransformPromise);
return rv.StealNSResult();
}
already_AddRefed<nsIDragSession> BrowserChild::GetDragSession() {
return RefPtr(mDragSession).forget();
}
void BrowserChild::SetDragSession(nsIDragSession* aSession) {
mDragSession = aSession;
}
BrowserChildMessageManager::BrowserChildMessageManager(
BrowserChild* aBrowserChild)
: ContentFrameMessageManager(new nsFrameMessageManager(aBrowserChild)),
mBrowserChild(aBrowserChild) {}
BrowserChildMessageManager::~BrowserChildMessageManager() = default;
NS_IMPL_CYCLE_COLLECTION_CLASS(BrowserChildMessageManager)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(BrowserChildMessageManager,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mMessageManager);
NS_IMPL_CYCLE_COLLECTION_UNLINK(mBrowserChild);
NS_IMPL_CYCLE_COLLECTION_UNLINK_WEAK_REFERENCE
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(BrowserChildMessageManager,
DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMessageManager)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mBrowserChild)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(BrowserChildMessageManager)
NS_INTERFACE_MAP_ENTRY(nsIMessageSender)
NS_INTERFACE_MAP_ENTRY_CONCRETE(ContentFrameMessageManager)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_ADDREF_INHERITED(BrowserChildMessageManager, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(BrowserChildMessageManager, DOMEventTargetHelper)
JSObject* BrowserChildMessageManager::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return ContentFrameMessageManager_Binding::Wrap(aCx, this, aGivenProto);
}
void BrowserChildMessageManager::MarkForCC() {
if (mBrowserChild) {
mBrowserChild->MarkScopesForCC();
}
EventListenerManager* elm = GetExistingListenerManager();
if (elm) {
elm->MarkForCC();
}
MessageManagerGlobal::MarkForCC();
}
Nullable<WindowProxyHolder> BrowserChildMessageManager::GetContent(
ErrorResult& aError) {
nsCOMPtr<nsIDocShell> docShell = GetDocShell(aError);
if (!docShell) {
return nullptr;
}
return WindowProxyHolder(docShell->GetBrowsingContext());
}
already_AddRefed<nsIDocShell> BrowserChildMessageManager::GetDocShell(
ErrorResult& aError) {
if (!mBrowserChild) {
aError.Throw(NS_ERROR_NULL_POINTER);
return nullptr;
}
nsCOMPtr<nsIDocShell> window =
do_GetInterface(mBrowserChild->WebNavigation());
return window.forget();
}
already_AddRefed<nsIEventTarget>
BrowserChildMessageManager::GetTabEventTarget() {
return do_AddRef(GetMainThreadSerialEventTarget());
}
nsresult BrowserChildMessageManager::Dispatch(
already_AddRefed<nsIRunnable>&& aRunnable) const {
return SchedulerGroup::Dispatch(std::move(aRunnable));
}
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