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-rw-r--r--dom/ipc/BrowserChild.cpp3771
1 files changed, 3771 insertions, 0 deletions
diff --git a/dom/ipc/BrowserChild.cpp b/dom/ipc/BrowserChild.cpp
new file mode 100644
index 0000000000..830ad8579a
--- /dev/null
+++ b/dom/ipc/BrowserChild.cpp
@@ -0,0 +1,3771 @@
+/* -*- 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/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 "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 "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),
+ mIgnoreKeyPressEvent(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 (StaticPrefs::browser_sessionstore_platform_collection_AtStartup()) {
+ 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(nsIWebBrowserChrome)
+ NS_INTERFACE_MAP_ENTRY(nsIWebBrowserChromeFocus)
+ 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::FocusNextElement(bool aForDocumentNavigation) {
+ SendMoveFocus(true, aForDocumentNavigation);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+BrowserChild::FocusPrevElement(bool aForDocumentNavigation) {
+ SendMoveFocus(false, aForDocumentNavigation);
+ return NS_OK;
+}
+
+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::AnnotateCrashReport(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 = nsContentUtils::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) {
+ nsCOMPtr<nsIDragService> dragService =
+ do_GetService("@mozilla.org/widget/dragservice;1");
+ if (dragService) {
+ // This will dispatch 'drag' event at the source if the
+ // drag transaction started in this process.
+ dragService->FireDragEventAtSource(eDrag, aEvent.mModifiers);
+ }
+ }
+
+ DispatchWidgetEventViaAPZ(localEvent);
+ 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.
+ const bool isPrecedingKeyDownEventConsumed =
+ aEvent.mMessage == eKeyPress && mIgnoreKeyPressEvent;
+
+ 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) {
+ mIgnoreKeyPressEvent = status == nsEventStatus_eConsumeNoDefault;
+ }
+
+ 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 mVsyncChild 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() && !mVsyncChild) {
+ mVsyncChild = MakeRefPtr<VsyncMainChild>();
+ if (!SendPVsyncConstructor(mVsyncChild)) {
+ mVsyncChild = nullptr;
+ }
+ }
+#endif
+ return mVsyncChild;
+}
+
+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), 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::RecvPrint(
+ const MaybeDiscardedBrowsingContext& aBc, const PrintData& aPrintData) {
+#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, rv);
+ if (NS_WARN_IF(rv.Failed())) {
+ return IPC_OK();
+ }
+ }
+#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)
+ : 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 {
+ NS_WARNING("Fallback to FallbackRenderer");
+ 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();
+}
+
+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::AnnotateCrashReport(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();
+}
+
+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));
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 16:39:24 +0000