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Diffstat (limited to 'dom/ipc/BrowserParent.cpp')
| -rw-r--r-- | dom/ipc/BrowserParent.cpp | 4118 |
1 files changed, 4118 insertions, 0 deletions
diff --git a/dom/ipc/BrowserParent.cpp b/dom/ipc/BrowserParent.cpp new file mode 100644 index 0000000000..d369556588 --- /dev/null +++ b/dom/ipc/BrowserParent.cpp @@ -0,0 +1,4118 @@ +/* -*- 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 "base/basictypes.h" + +#include "BrowserParent.h" +#include "mozilla/AlreadyAddRefed.h" +#include "mozilla/EventForwards.h" + +#ifdef ACCESSIBILITY +# include "mozilla/a11y/DocAccessibleParent.h" +# include "mozilla/a11y/Platform.h" +# include "nsAccessibilityService.h" +#endif +#include "mozilla/Components.h" +#include "mozilla/dom/BrowserHost.h" +#include "mozilla/dom/BrowserSessionStore.h" +#include "mozilla/dom/BrowsingContextGroup.h" +#include "mozilla/dom/CancelContentJSOptionsBinding.h" +#include "mozilla/dom/ChromeMessageSender.h" +#include "mozilla/dom/ContentParent.h" +#include "mozilla/dom/ContentProcessManager.h" +#include "mozilla/dom/DataTransfer.h" +#include "mozilla/dom/DataTransferItemList.h" +#include "mozilla/dom/DocumentInlines.h" +#include "mozilla/dom/Event.h" +#include "mozilla/dom/indexedDB/ActorsParent.h" +#include "mozilla/dom/PaymentRequestParent.h" +#include "mozilla/dom/PointerEventHandler.h" +#include "mozilla/dom/BrowserBridgeParent.h" +#include "mozilla/dom/RemoteDragStartData.h" +#include "mozilla/dom/RemoteWebProgressRequest.h" +#include "mozilla/dom/SessionHistoryEntry.h" +#include "mozilla/dom/SessionStoreParent.h" +#include "mozilla/dom/UserActivation.h" +#include "mozilla/EventStateManager.h" +#include "mozilla/gfx/2D.h" +#include "mozilla/gfx/DataSurfaceHelpers.h" +#include "mozilla/gfx/GPUProcessManager.h" +#include "mozilla/IMEStateManager.h" +#include "mozilla/ipc/Endpoint.h" +#include "mozilla/layers/AsyncDragMetrics.h" +#include "mozilla/layers/InputAPZContext.h" +#include "mozilla/layout/RemoteLayerTreeOwner.h" +#include "mozilla/LookAndFeel.h" +#include "mozilla/Maybe.h" +#include "mozilla/MiscEvents.h" +#include "mozilla/MouseEvents.h" +#include "mozilla/NativeKeyBindingsType.h" +#include "mozilla/net/NeckoChild.h" +#include "mozilla/net/CookieJarSettings.h" +#include "mozilla/Preferences.h" +#include "mozilla/PresShell.h" +#include "mozilla/ProcessHangMonitor.h" +#include "mozilla/RecursiveMutex.h" +#include "mozilla/RefPtr.h" +#include "mozilla/StaticPrefs_dom.h" +#include "mozilla/TextEventDispatcher.h" +#include "mozilla/TextEvents.h" +#include "mozilla/TouchEvents.h" +#include "mozilla/UniquePtr.h" +#include "mozilla/Unused.h" +#include "nsCOMPtr.h" +#include "nsContentUtils.h" +#include "nsDebug.h" +#include "nsFocusManager.h" +#include "nsFrameLoader.h" +#include "nsFrameLoaderOwner.h" +#include "nsFrameManager.h" +#include "nsIBaseWindow.h" +#include "nsIBrowser.h" +#include "nsIBrowserController.h" +#include "nsIContent.h" +#include "nsICookieJarSettings.h" +#include "nsIDocShell.h" +#include "nsIDocShellTreeOwner.h" +#include "nsImportModule.h" +#include "nsIInterfaceRequestorUtils.h" +#include "nsILoadInfo.h" +#include "nsIPromptFactory.h" +#include "nsIURI.h" +#include "nsIWebBrowserChrome.h" +#include "nsIWebProtocolHandlerRegistrar.h" +#include "nsIWindowWatcher.h" +#include "nsIXPConnect.h" +#include "nsIXULBrowserWindow.h" +#include "nsIAppWindow.h" +#include "nsLayoutUtils.h" +#include "nsQueryActor.h" +#include "nsSHistory.h" +#include "nsViewManager.h" +#include "nsVariant.h" +#include "nsIWidget.h" +#include "nsNetUtil.h" +#ifndef XP_WIN +# include "nsJARProtocolHandler.h" +#endif +#include "nsPIDOMWindow.h" +#include "nsPrintfCString.h" +#include "nsQueryObject.h" +#include "nsServiceManagerUtils.h" +#include "nsThreadUtils.h" +#include "PermissionMessageUtils.h" +#include "StructuredCloneData.h" +#include "ColorPickerParent.h" +#include "FilePickerParent.h" +#include "BrowserChild.h" +#include "nsNetCID.h" +#include "nsIAuthInformation.h" +#include "nsIAuthPromptCallback.h" +#include "nsAuthInformationHolder.h" +#include "nsICancelable.h" +#include "gfxUtils.h" +#include "nsILoginManagerAuthPrompter.h" +#include "nsPIWindowRoot.h" +#include "nsReadableUtils.h" +#include "nsIAuthPrompt2.h" +#include "gfxDrawable.h" +#include "ImageOps.h" +#include "UnitTransforms.h" +#include <algorithm> +#include "mozilla/NullPrincipal.h" +#include "mozilla/WebBrowserPersistDocumentParent.h" +#include "ProcessPriorityManager.h" +#include "nsString.h" +#include "IHistory.h" +#include "mozilla/dom/WindowGlobalParent.h" +#include "mozilla/dom/CanonicalBrowsingContext.h" +#include "mozilla/ProfilerLabels.h" +#include "MMPrinter.h" +#include "mozilla/dom/CrashReport.h" +#include "nsISecureBrowserUI.h" +#include "nsIXULRuntime.h" +#include "VsyncSource.h" +#include "nsSubDocumentFrame.h" + +#ifdef XP_WIN +# include "FxRWindowManager.h" +#endif + +#if defined(XP_WIN) && defined(ACCESSIBILITY) +# include "mozilla/a11y/AccessibleWrap.h" +# include "mozilla/a11y/Compatibility.h" +# include "mozilla/a11y/nsWinUtils.h" +#endif + +#ifdef MOZ_ANDROID_HISTORY +# include "GeckoViewHistory.h" +#endif + +#if defined(MOZ_WIDGET_ANDROID) +# include "mozilla/widget/nsWindow.h" +#endif // defined(MOZ_WIDGET_ANDROID) + +using namespace mozilla::dom; +using namespace mozilla::ipc; +using namespace mozilla::layers; +using namespace mozilla::layout; +using namespace mozilla::services; +using namespace mozilla::widget; +using namespace mozilla::gfx; + +using mozilla::LazyLogModule; + +extern mozilla::LazyLogModule gSHIPBFCacheLog; + +LazyLogModule gBrowserFocusLog("BrowserFocus"); + +#define LOGBROWSERFOCUS(args) \ + MOZ_LOG(gBrowserFocusLog, mozilla::LogLevel::Debug, args) + +/* static */ +BrowserParent* BrowserParent::sFocus = nullptr; +/* static */ +BrowserParent* BrowserParent::sTopLevelWebFocus = nullptr; +/* static */ +BrowserParent* BrowserParent::sLastMouseRemoteTarget = nullptr; + +// The flags passed by the webProgress notifications are 16 bits shifted +// from the ones registered by webProgressListeners. +#define NOTIFY_FLAG_SHIFT 16 + +namespace mozilla { + +/** + * Store data of a keypress event which is requesting to handled it in a remote + * process or some remote processes. + */ +class RequestingAccessKeyEventData { + public: + RequestingAccessKeyEventData() = delete; + + static void OnBrowserParentCreated() { + MOZ_ASSERT(sBrowserParentCount <= INT32_MAX); + sBrowserParentCount++; + } + static void OnBrowserParentDestroyed() { + MOZ_ASSERT(sBrowserParentCount > 0); + sBrowserParentCount--; + // To avoid memory leak, we need to reset sData when the last BrowserParent + // is destroyed. + if (!sBrowserParentCount) { + Clear(); + } + } + + static void Set(const WidgetKeyboardEvent& aKeyPressEvent) { + MOZ_ASSERT(aKeyPressEvent.mMessage == eKeyPress); + MOZ_ASSERT(sBrowserParentCount > 0); + sData = + Some(Data{aKeyPressEvent.mAlternativeCharCodes, aKeyPressEvent.mKeyCode, + aKeyPressEvent.mCharCode, aKeyPressEvent.mKeyNameIndex, + aKeyPressEvent.mCodeNameIndex, aKeyPressEvent.mKeyValue, + aKeyPressEvent.mModifiers}); + } + + static void Clear() { sData.reset(); } + + [[nodiscard]] static bool Equals(const WidgetKeyboardEvent& aKeyPressEvent) { + MOZ_ASSERT(sBrowserParentCount > 0); + return sData.isSome() && sData->Equals(aKeyPressEvent); + } + + [[nodiscard]] static bool IsSet() { + MOZ_ASSERT(sBrowserParentCount > 0); + return sData.isSome(); + } + + private: + struct Data { + [[nodiscard]] bool Equals(const WidgetKeyboardEvent& aKeyPressEvent) { + return mKeyCode == aKeyPressEvent.mKeyCode && + mCharCode == aKeyPressEvent.mCharCode && + mKeyNameIndex == aKeyPressEvent.mKeyNameIndex && + mCodeNameIndex == aKeyPressEvent.mCodeNameIndex && + mKeyValue == aKeyPressEvent.mKeyValue && + mModifiers == aKeyPressEvent.mModifiers && + mAlternativeCharCodes == aKeyPressEvent.mAlternativeCharCodes; + } + + CopyableTArray<AlternativeCharCode> mAlternativeCharCodes; + uint32_t mKeyCode; + uint32_t mCharCode; + KeyNameIndex mKeyNameIndex; + CodeNameIndex mCodeNameIndex; + nsString mKeyValue; + Modifiers mModifiers; + }; + static Maybe<Data> sData; + static int32_t sBrowserParentCount; +}; +int32_t RequestingAccessKeyEventData::sBrowserParentCount = 0; +Maybe<RequestingAccessKeyEventData::Data> RequestingAccessKeyEventData::sData; + +namespace dom { + +BrowserParent::LayerToBrowserParentTable* + BrowserParent::sLayerToBrowserParentTable = nullptr; + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(BrowserParent) + NS_INTERFACE_MAP_ENTRY(nsIAuthPromptProvider) + NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference) + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMEventListener) +NS_INTERFACE_MAP_END +NS_IMPL_CYCLE_COLLECTION_WEAK(BrowserParent, mFrameLoader, mBrowsingContext) +NS_IMPL_CYCLE_COLLECTING_ADDREF(BrowserParent) +NS_IMPL_CYCLE_COLLECTING_RELEASE(BrowserParent) + +BrowserParent::BrowserParent(ContentParent* aManager, const TabId& aTabId, + const TabContext& aContext, + CanonicalBrowsingContext* aBrowsingContext, + uint32_t aChromeFlags) + : TabContext(aContext), + mTabId(aTabId), + mManager(aManager), + mBrowsingContext(aBrowsingContext), + mFrameElement(nullptr), + mBrowserDOMWindow(nullptr), + mFrameLoader(nullptr), + mChromeFlags(aChromeFlags), + mBrowserBridgeParent(nullptr), + mBrowserHost(nullptr), + mContentCache(*this), + mRect(0, 0, 0, 0), + mDimensions(0, 0), + mDPI(0), + mRounding(0), + mDefaultScale(0), + mUpdatedDimensions(false), + mSizeMode(nsSizeMode_Normal), + mCreatingWindow(false), + mVsyncParent(nullptr), + mMarkedDestroying(false), + mIsDestroyed(false), + mRemoteTargetSetsCursor(false), + mIsPreservingLayers(false), + mRenderLayers(true), + mPriorityHint(false), + mHasLayers(false), + mHasPresented(false), + mIsReadyToHandleInputEvents(false), + mIsMouseEnterIntoWidgetEventSuppressed(false), + mLockedNativePointer(false), + mShowingTooltip(false) { + MOZ_ASSERT(aManager); + + RequestingAccessKeyEventData::OnBrowserParentCreated(); + + // When the input event queue is disabled, we don't need to handle the case + // that some input events are dispatched before PBrowserConstructor. + mIsReadyToHandleInputEvents = !ContentParent::IsInputEventQueueSupported(); + + // Make sure to compute our process priority if needed before the block of + // code below. This makes sure the block below prioritizes our process if + // needed. + if (aBrowsingContext->IsTop()) { + RecomputeProcessPriority(); + } + + // If we're in a BC tree that is active with respect to the priority manager, + // ensure that this new BrowserParent is marked as active. This ensures that + // the process will be prioritized in a cross-site iframe navigation in an + // active tab, and also that the process is correctly prioritized if we got + // created for a browsing context which was already active. + if (aBrowsingContext->Top()->IsPriorityActive()) { + ProcessPriorityManager::BrowserPriorityChanged(this, true); + } +} + +BrowserParent::~BrowserParent() { + RequestingAccessKeyEventData::OnBrowserParentDestroyed(); +} + +/* static */ +BrowserParent* BrowserParent::GetFocused() { return sFocus; } + +/* static */ +BrowserParent* BrowserParent::GetLastMouseRemoteTarget() { + return sLastMouseRemoteTarget; +} + +/*static*/ +BrowserParent* BrowserParent::GetFrom(nsFrameLoader* aFrameLoader) { + if (!aFrameLoader) { + return nullptr; + } + return aFrameLoader->GetBrowserParent(); +} + +/*static*/ +BrowserParent* BrowserParent::GetFrom(PBrowserParent* aBrowserParent) { + return static_cast<BrowserParent*>(aBrowserParent); +} + +/*static*/ +BrowserParent* BrowserParent::GetFrom(nsIContent* aContent) { + RefPtr<nsFrameLoaderOwner> loaderOwner = do_QueryObject(aContent); + if (!loaderOwner) { + return nullptr; + } + RefPtr<nsFrameLoader> frameLoader = loaderOwner->GetFrameLoader(); + return GetFrom(frameLoader); +} + +/* static */ +BrowserParent* BrowserParent::GetBrowserParentFromLayersId( + layers::LayersId aLayersId) { + if (!sLayerToBrowserParentTable) { + return nullptr; + } + return sLayerToBrowserParentTable->Get(uint64_t(aLayersId)); +} + +/*static*/ +TabId BrowserParent::GetTabIdFrom(nsIDocShell* docShell) { + nsCOMPtr<nsIBrowserChild> browserChild(BrowserChild::GetFrom(docShell)); + if (browserChild) { + return static_cast<BrowserChild*>(browserChild.get())->GetTabId(); + } + return TabId(0); +} + +void BrowserParent::AddBrowserParentToTable(layers::LayersId aLayersId, + BrowserParent* aBrowserParent) { + if (!sLayerToBrowserParentTable) { + sLayerToBrowserParentTable = new LayerToBrowserParentTable(); + } + sLayerToBrowserParentTable->InsertOrUpdate(uint64_t(aLayersId), + aBrowserParent); +} + +void BrowserParent::RemoveBrowserParentFromTable(layers::LayersId aLayersId) { + if (!sLayerToBrowserParentTable) { + return; + } + sLayerToBrowserParentTable->Remove(uint64_t(aLayersId)); + if (sLayerToBrowserParentTable->Count() == 0) { + delete sLayerToBrowserParentTable; + sLayerToBrowserParentTable = nullptr; + } +} + +already_AddRefed<nsILoadContext> BrowserParent::GetLoadContext() { + return do_AddRef(mBrowsingContext); +} + +/** + * Will return nullptr if there is no outer window available for the + * document hosting the owner element of this BrowserParent. Also will return + * nullptr if that outer window is in the process of closing. + */ +already_AddRefed<nsPIDOMWindowOuter> BrowserParent::GetParentWindowOuter() { + nsCOMPtr<nsIContent> frame = GetOwnerElement(); + if (!frame) { + return nullptr; + } + + nsCOMPtr<nsPIDOMWindowOuter> parent = frame->OwnerDoc()->GetWindow(); + if (!parent || parent->Closed()) { + return nullptr; + } + + return parent.forget(); +} + +already_AddRefed<nsIWidget> BrowserParent::GetTopLevelWidget() { + if (RefPtr<Element> element = mFrameElement) { + if (PresShell* presShell = element->OwnerDoc()->GetPresShell()) { + return do_AddRef(presShell->GetViewManager()->GetRootWidget()); + } + } + return nullptr; +} + +already_AddRefed<nsIWidget> BrowserParent::GetTextInputHandlingWidget() const { + if (!mFrameElement) { + return nullptr; + } + PresShell* presShell = mFrameElement->OwnerDoc()->GetPresShell(); + if (!presShell) { + return nullptr; + } + nsPresContext* presContext = presShell->GetPresContext(); + if (!presContext) { + return nullptr; + } + nsCOMPtr<nsIWidget> widget = presContext->GetTextInputHandlingWidget(); + return widget.forget(); +} + +already_AddRefed<nsIWidget> BrowserParent::GetWidget() const { + if (!mFrameElement) { + return nullptr; + } + nsCOMPtr<nsIWidget> widget = nsContentUtils::WidgetForContent(mFrameElement); + if (!widget) { + widget = nsContentUtils::WidgetForDocument(mFrameElement->OwnerDoc()); + } + return widget.forget(); +} + +already_AddRefed<nsIWidget> BrowserParent::GetDocWidget() const { + if (!mFrameElement) { + return nullptr; + } + return do_AddRef( + nsContentUtils::WidgetForDocument(mFrameElement->OwnerDoc())); +} + +nsIXULBrowserWindow* BrowserParent::GetXULBrowserWindow() { + if (!mFrameElement) { + return nullptr; + } + + nsCOMPtr<nsIDocShell> docShell = mFrameElement->OwnerDoc()->GetDocShell(); + if (!docShell) { + return nullptr; + } + + nsCOMPtr<nsIDocShellTreeOwner> treeOwner; + docShell->GetTreeOwner(getter_AddRefs(treeOwner)); + if (!treeOwner) { + return nullptr; + } + + nsCOMPtr<nsIAppWindow> window = do_GetInterface(treeOwner); + if (!window) { + return nullptr; + } + + nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow; + window->GetXULBrowserWindow(getter_AddRefs(xulBrowserWindow)); + return xulBrowserWindow; +} + +uint32_t BrowserParent::GetMaxTouchPoints(Element* aElement) { + if (!aElement) { + return 0; + } + + if (StaticPrefs::dom_maxtouchpoints_testing_value() >= 0) { + return StaticPrefs::dom_maxtouchpoints_testing_value(); + } + + nsIWidget* widget = nsContentUtils::WidgetForDocument(aElement->OwnerDoc()); + return widget ? widget->GetMaxTouchPoints() : 0; +} + +a11y::DocAccessibleParent* BrowserParent::GetTopLevelDocAccessible() const { +#ifdef ACCESSIBILITY + // XXX Consider managing non top level PDocAccessibles with their parent + // document accessible. + const ManagedContainer<PDocAccessibleParent>& docs = + ManagedPDocAccessibleParent(); + for (auto* key : docs) { + auto* doc = static_cast<a11y::DocAccessibleParent*>(key); + // We want the document for this BrowserParent even if it's for an + // embedded out-of-process iframe. Therefore, we use + // IsTopLevelInContentProcess. In contrast, using IsToplevel would only + // include documents that aren't embedded; e.g. tab documents. + if (doc->IsTopLevelInContentProcess() && !doc->IsShutdown()) { + return doc; + } + } +#endif + return nullptr; +} + +LayersId BrowserParent::GetLayersId() const { + if (!mRemoteLayerTreeOwner.IsInitialized()) { + return LayersId{}; + } + return mRemoteLayerTreeOwner.GetLayersId(); +} + +BrowserBridgeParent* BrowserParent::GetBrowserBridgeParent() const { + return mBrowserBridgeParent; +} + +BrowserHost* BrowserParent::GetBrowserHost() const { return mBrowserHost; } + +ParentShowInfo BrowserParent::GetShowInfo() { + TryCacheDPIAndScale(); + if (mFrameElement) { + nsAutoString name; + mFrameElement->GetAttr(nsGkAtoms::name, name); + bool isTransparent = + nsContentUtils::IsChromeDoc(mFrameElement->OwnerDoc()) && + mFrameElement->HasAttr(nsGkAtoms::transparent); + return ParentShowInfo(name, false, isTransparent, mDPI, mRounding, + mDefaultScale.scale); + } + + return ParentShowInfo(u""_ns, false, false, mDPI, mRounding, + mDefaultScale.scale); +} + +already_AddRefed<nsIPrincipal> BrowserParent::GetContentPrincipal() const { + nsCOMPtr<nsIBrowser> browser = + mFrameElement ? mFrameElement->AsBrowser() : nullptr; + NS_ENSURE_TRUE(browser, nullptr); + + RefPtr<nsIPrincipal> principal; + + nsresult rv; + rv = browser->GetContentPrincipal(getter_AddRefs(principal)); + NS_ENSURE_SUCCESS(rv, nullptr); + + return principal.forget(); +} + +void BrowserParent::SetOwnerElement(Element* aElement) { + // If we held previous content then unregister for its events. + RemoveWindowListeners(); + + // If we change top-level documents then we need to change our + // registration with them. + RefPtr<nsPIWindowRoot> curTopLevelWin, newTopLevelWin; + if (mFrameElement) { + curTopLevelWin = nsContentUtils::GetWindowRoot(mFrameElement->OwnerDoc()); + } + if (aElement) { + newTopLevelWin = nsContentUtils::GetWindowRoot(aElement->OwnerDoc()); + } + bool isSameTopLevelWin = curTopLevelWin == newTopLevelWin; + if (mBrowserHost && curTopLevelWin && !isSameTopLevelWin) { + curTopLevelWin->RemoveBrowser(mBrowserHost); + } + + // Update to the new content, and register to listen for events from it. + mFrameElement = aElement; + + if (mBrowserHost && newTopLevelWin && !isSameTopLevelWin) { + newTopLevelWin->AddBrowser(mBrowserHost); + } + +#if defined(XP_WIN) && defined(ACCESSIBILITY) + if (!mIsDestroyed) { + uintptr_t newWindowHandle = 0; + if (nsCOMPtr<nsIWidget> widget = GetWidget()) { + newWindowHandle = + reinterpret_cast<uintptr_t>(widget->GetNativeData(NS_NATIVE_WINDOW)); + } + Unused << SendUpdateNativeWindowHandle(newWindowHandle); + a11y::DocAccessibleParent* doc = GetTopLevelDocAccessible(); + if (doc) { + HWND hWnd = reinterpret_cast<HWND>(doc->GetEmulatedWindowHandle()); + if (hWnd) { + HWND parentHwnd = reinterpret_cast<HWND>(newWindowHandle); + if (parentHwnd != ::GetParent(hWnd)) { + ::SetParent(hWnd, parentHwnd); + } + } + } + } +#endif + + AddWindowListeners(); + + // The DPI depends on our frame element's widget, so invalidate now in case + // we've tried to cache it already. + mDPI = -1; + TryCacheDPIAndScale(); + + if (mRemoteLayerTreeOwner.IsInitialized()) { + mRemoteLayerTreeOwner.OwnerContentChanged(); + } + + // Set our BrowsingContext's embedder if we're not embedded within a + // BrowserBridgeParent. + if (!GetBrowserBridgeParent() && mBrowsingContext && mFrameElement) { + mBrowsingContext->SetEmbedderElement(mFrameElement); + } + + UpdateVsyncParentVsyncDispatcher(); + + VisitChildren([aElement](BrowserBridgeParent* aBrowser) { + if (auto* browserParent = aBrowser->GetBrowserParent()) { + browserParent->SetOwnerElement(aElement); + } + }); +} + +void BrowserParent::CacheFrameLoader(nsFrameLoader* aFrameLoader) { + mFrameLoader = aFrameLoader; +} + +void BrowserParent::AddWindowListeners() { + if (mFrameElement) { + if (nsCOMPtr<nsPIDOMWindowOuter> window = + mFrameElement->OwnerDoc()->GetWindow()) { + nsCOMPtr<EventTarget> eventTarget = window->GetTopWindowRoot(); + if (eventTarget) { + eventTarget->AddEventListener(u"MozUpdateWindowPos"_ns, this, false, + false); + eventTarget->AddEventListener(u"fullscreenchange"_ns, this, false, + false); + } + } + } +} + +void BrowserParent::RemoveWindowListeners() { + if (mFrameElement && mFrameElement->OwnerDoc()->GetWindow()) { + nsCOMPtr<nsPIDOMWindowOuter> window = + mFrameElement->OwnerDoc()->GetWindow(); + nsCOMPtr<EventTarget> eventTarget = window->GetTopWindowRoot(); + if (eventTarget) { + eventTarget->RemoveEventListener(u"MozUpdateWindowPos"_ns, this, false); + eventTarget->RemoveEventListener(u"fullscreenchange"_ns, this, false); + } + } +} + +void BrowserParent::Deactivated() { + if (mShowingTooltip) { + // Reuse the normal tooltip hiding method. + mozilla::Unused << RecvHideTooltip(); + } + UnlockNativePointer(); + UnsetTopLevelWebFocus(this); + UnsetLastMouseRemoteTarget(this); + PointerLockManager::ReleaseLockedRemoteTarget(this); + PointerEventHandler::ReleasePointerCaptureRemoteTarget(this); + PresShell::ReleaseCapturingRemoteTarget(this); + ProcessPriorityManager::BrowserPriorityChanged(this, /* aPriority = */ false); +} + +void BrowserParent::Destroy() { + // Aggressively release the window to avoid leaking the world in shutdown + // corner cases. + mBrowserDOMWindow = nullptr; + + if (mIsDestroyed) { + return; + } + + Deactivated(); + + RemoveWindowListeners(); + +#ifdef ACCESSIBILITY + if (a11y::DocAccessibleParent* tabDoc = GetTopLevelDocAccessible()) { +# if defined(ANDROID) + MonitorAutoLock mal(nsAccessibilityService::GetAndroidMonitor()); +# endif + tabDoc->Destroy(); + } +#endif + + { + // The following sequence assumes that the keepalive state does not change + // between the calls, but our ThreadsafeHandle might be accessed from other + // threads in the meantime. + RecursiveMutexAutoLock lock(Manager()->ThreadsafeHandleMutex()); + + // If we are shutting down everything or we know to be the last + // BrowserParent, signal the impending shutdown early to the content process + // to avoid to run the SendDestroy before we know we are ExpectingShutdown. + Manager()->NotifyTabWillDestroy(); + + // If this fails, it's most likely due to a content-process crash, and + // auto-cleanup will kick in. Otherwise, the child side will destroy itself + // and send back __delete__(). + (void)SendDestroy(); + mIsDestroyed = true; + + Manager()->NotifyTabDestroying(); + } + + // This `AddKeepAlive` will be cleared if `mMarkedDestroying` is set in + // `ActorDestroy`. Out of caution, we don't add the `KeepAlive` if our IPC + // actor has somehow already been destroyed, as that would mean `ActorDestroy` + // won't be called. + if (CanRecv()) { + mBrowsingContext->Group()->AddKeepAlive(); + } + + mMarkedDestroying = true; +} + +mozilla::ipc::IPCResult BrowserParent::RecvDidUnsuppressPainting() { + if (!mFrameElement) { + return IPC_OK(); + } + nsSubDocumentFrame* subdocFrame = + do_QueryFrame(mFrameElement->GetPrimaryFrame()); + if (subdocFrame && subdocFrame->HasRetainedPaintData()) { + subdocFrame->ClearRetainedPaintData(); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvEnsureLayersConnected( + CompositorOptions* aCompositorOptions) { + if (mRemoteLayerTreeOwner.IsInitialized()) { + mRemoteLayerTreeOwner.EnsureLayersConnected(aCompositorOptions); + } + return IPC_OK(); +} + +void BrowserParent::ActorDestroy(ActorDestroyReason why) { + Manager()->NotifyTabDestroyed(mTabId, mMarkedDestroying); + + ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); + if (cpm) { + cpm->UnregisterRemoteFrame(mTabId); + } + + if (mRemoteLayerTreeOwner.IsInitialized()) { + auto layersId = mRemoteLayerTreeOwner.GetLayersId(); + if (mFrameElement) { + nsSubDocumentFrame* f = do_QueryFrame(mFrameElement->GetPrimaryFrame()); + if (f && f->HasRetainedPaintData() && + f->GetRemotePaintData().mLayersId == layersId) { + f->ClearRetainedPaintData(); + } + } + + // It's important to unmap layers after the remote browser has been + // destroyed, otherwise it may still send messages to the compositor which + // will reject them, causing assertions. + RemoveBrowserParentFromTable(layersId); + mRemoteLayerTreeOwner.Destroy(); + } + + // Even though BrowserParent::Destroy calls this, we need to do it here too in + // case of a crash. + Deactivated(); + + if (why == AbnormalShutdown) { + // dom_reporting_header must also be enabled for the report to be sent. + if (StaticPrefs::dom_reporting_crash_enabled()) { + nsCOMPtr<nsIPrincipal> principal = GetContentPrincipal(); + + if (principal) { + nsAutoCString crash_reason; + CrashReporter::GetAnnotation(OtherPid(), + CrashReporter::Annotation::MozCrashReason, + crash_reason); + // FIXME(arenevier): Find a less fragile way to identify that a crash + // was caused by OOM + bool is_oom = false; + if (crash_reason == "OOM" || crash_reason == "OOM!" || + StringBeginsWith(crash_reason, "[unhandlable oom]"_ns) || + StringBeginsWith(crash_reason, "Unhandlable OOM"_ns)) { + is_oom = true; + } + + CrashReport::Deliver(principal, is_oom); + } + } + } + + // If we were shutting down normally, we held a reference to our + // BrowsingContextGroup in `BrowserParent::Destroy`. Clear that reference + // here. + if (mMarkedDestroying) { + mBrowsingContext->Group()->RemoveKeepAlive(); + } + + // Tell our embedder that the tab is now going away unless we're an + // out-of-process iframe. + RefPtr<nsFrameLoader> frameLoader = GetFrameLoader(true); + if (frameLoader) { + ReceiveMessage(CHILD_PROCESS_SHUTDOWN_MESSAGE, false, nullptr); + + if (mBrowsingContext->IsTop()) { + // If this is a top-level BrowsingContext, tell the frameloader it's time + // to go away. Otherwise, this is a subframe crash, and we can keep the + // frameloader around. + frameLoader->DestroyComplete(); + } + + // If this was a crash, tell our nsFrameLoader to fire crash events. + if (why == AbnormalShutdown) { + frameLoader->MaybeNotifyCrashed(mBrowsingContext, Manager()->ChildID(), + GetIPCChannel()); + } else if (why == ManagedEndpointDropped) { + // If we instead failed due to a constructor error, don't include process + // information, as the process did not crash. + frameLoader->MaybeNotifyCrashed(mBrowsingContext, ContentParentId{}, + nullptr); + } + } + + mFrameLoader = nullptr; + + // If we were destroyed due to our ManagedEndpoints being dropped, make a + // point of showing the subframe crashed UI. We don't fire the full + // `MaybeNotifyCrashed` codepath, as the entire process hasn't crashed on us, + // and it may confuse the frontend. + mBrowsingContext->BrowserParentDestroyed( + this, why == AbnormalShutdown || why == ManagedEndpointDropped); +} + +mozilla::ipc::IPCResult BrowserParent::RecvMoveFocus( + const bool& aForward, const bool& aForDocumentNavigation) { + LOGBROWSERFOCUS(("RecvMoveFocus %p, aForward: %d, aForDocumentNavigation: %d", + this, aForward, aForDocumentNavigation)); + BrowserBridgeParent* bridgeParent = GetBrowserBridgeParent(); + if (bridgeParent) { + mozilla::Unused << bridgeParent->SendMoveFocus(aForward, + aForDocumentNavigation); + return IPC_OK(); + } + + RefPtr<nsFocusManager> fm = nsFocusManager::GetFocusManager(); + if (fm) { + RefPtr<Element> dummy; + + uint32_t type = + aForward + ? (aForDocumentNavigation + ? static_cast<uint32_t>( + nsIFocusManager::MOVEFOCUS_FORWARDDOC) + : static_cast<uint32_t>(nsIFocusManager::MOVEFOCUS_FORWARD)) + : (aForDocumentNavigation + ? static_cast<uint32_t>( + nsIFocusManager::MOVEFOCUS_BACKWARDDOC) + : static_cast<uint32_t>( + nsIFocusManager::MOVEFOCUS_BACKWARD)); + fm->MoveFocus(nullptr, mFrameElement, type, nsIFocusManager::FLAG_BYKEY, + getter_AddRefs(dummy)); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvDropLinks( + nsTArray<nsString>&& aLinks) { + nsCOMPtr<nsIBrowser> browser = + mFrameElement ? mFrameElement->AsBrowser() : nullptr; + if (browser) { + // Verify that links have not been modified by the child. If links have + // not been modified then it's safe to load those links using the + // SystemPrincipal. If they have been modified by web content, then + // we use a NullPrincipal which still allows to load web links. + bool loadUsingSystemPrincipal = true; + if (aLinks.Length() != mVerifyDropLinks.Length()) { + loadUsingSystemPrincipal = false; + } + for (uint32_t i = 0; i < aLinks.Length(); i++) { + if (loadUsingSystemPrincipal) { + if (!aLinks[i].Equals(mVerifyDropLinks[i])) { + loadUsingSystemPrincipal = false; + } + } + } + mVerifyDropLinks.Clear(); + nsCOMPtr<nsIPrincipal> triggeringPrincipal; + if (loadUsingSystemPrincipal) { + triggeringPrincipal = nsContentUtils::GetSystemPrincipal(); + } else { + triggeringPrincipal = NullPrincipal::CreateWithoutOriginAttributes(); + } + browser->DropLinks(aLinks, triggeringPrincipal); + } + return IPC_OK(); +} + +bool BrowserParent::SendLoadRemoteScript(const nsAString& aURL, + const bool& aRunInGlobalScope) { + if (mCreatingWindow) { + mDelayedFrameScripts.AppendElement( + FrameScriptInfo(nsString(aURL), aRunInGlobalScope)); + return true; + } + + MOZ_ASSERT(mDelayedFrameScripts.IsEmpty()); + return PBrowserParent::SendLoadRemoteScript(aURL, aRunInGlobalScope); +} + +void BrowserParent::LoadURL(nsDocShellLoadState* aLoadState) { + MOZ_ASSERT(aLoadState); + MOZ_ASSERT(aLoadState->URI()); + if (mIsDestroyed) { + return; + } + + if (mCreatingWindow) { + // Don't send the message if the child wants to load its own URL. + return; + } + + Unused << SendLoadURL(WrapNotNull(aLoadState), GetShowInfo()); +} + +void BrowserParent::ResumeLoad(uint64_t aPendingSwitchID) { + MOZ_ASSERT(aPendingSwitchID != 0); + + if (NS_WARN_IF(mIsDestroyed)) { + return; + } + + Unused << SendResumeLoad(aPendingSwitchID, GetShowInfo()); +} + +void BrowserParent::InitRendering() { + if (mRemoteLayerTreeOwner.IsInitialized()) { + return; + } + mRemoteLayerTreeOwner.Initialize(this); + + layers::LayersId layersId = mRemoteLayerTreeOwner.GetLayersId(); + AddBrowserParentToTable(layersId, this); + + RefPtr<nsFrameLoader> frameLoader = GetFrameLoader(); + if (frameLoader) { + nsIFrame* frame = frameLoader->GetPrimaryFrameOfOwningContent(); + if (frame) { + frame->InvalidateFrame(); + } + } + + TextureFactoryIdentifier textureFactoryIdentifier; + mRemoteLayerTreeOwner.GetTextureFactoryIdentifier(&textureFactoryIdentifier); + Unused << SendInitRendering(textureFactoryIdentifier, layersId, + mRemoteLayerTreeOwner.GetCompositorOptions(), + mRemoteLayerTreeOwner.IsLayersConnected()); + + RefPtr<nsIWidget> widget = GetTopLevelWidget(); + if (widget) { + ScreenIntMargin safeAreaInsets = widget->GetSafeAreaInsets(); + Unused << SendSafeAreaInsetsChanged(safeAreaInsets); + } + +#if defined(MOZ_WIDGET_ANDROID) + MOZ_ASSERT(widget); + + if (GetBrowsingContext()->IsTopContent()) { + Unused << SendDynamicToolbarMaxHeightChanged( + widget->GetDynamicToolbarMaxHeight()); + } +#endif +} + +bool BrowserParent::AttachWindowRenderer() { + return mRemoteLayerTreeOwner.AttachWindowRenderer(); +} + +void BrowserParent::MaybeShowFrame() { + RefPtr<nsFrameLoader> frameLoader = GetFrameLoader(); + if (!frameLoader) { + return; + } + frameLoader->MaybeShowFrame(); +} + +bool BrowserParent::Show(const OwnerShowInfo& aOwnerInfo) { + mDimensions = aOwnerInfo.size(); + if (mIsDestroyed) { + return false; + } + + MOZ_ASSERT(mRemoteLayerTreeOwner.IsInitialized()); + if (!mRemoteLayerTreeOwner.AttachWindowRenderer()) { + return false; + } + + mSizeMode = aOwnerInfo.sizeMode(); + Unused << SendShow(GetShowInfo(), aOwnerInfo); + return true; +} + +mozilla::ipc::IPCResult BrowserParent::RecvSetDimensions( + mozilla::DimensionRequest aRequest, const double& aScale) { + NS_ENSURE_TRUE(mFrameElement, IPC_OK()); + nsCOMPtr<nsIDocShell> docShell = mFrameElement->OwnerDoc()->GetDocShell(); + NS_ENSURE_TRUE(docShell, IPC_OK()); + nsCOMPtr<nsIDocShellTreeOwner> treeOwner; + docShell->GetTreeOwner(getter_AddRefs(treeOwner)); + nsCOMPtr<nsIBaseWindow> treeOwnerAsWin = do_QueryInterface(treeOwner); + NS_ENSURE_TRUE(treeOwnerAsWin, IPC_OK()); + + // `BrowserChild` only sends the values to actually be changed, see more + // details in `BrowserChild::SetDimensions()`. + // Note that `BrowserChild::SetDimensions()` may be called before receiving + // our `SendUIResolutionChanged()` call. Therefore, if given each coordinate + // shouldn't be ignored, we need to recompute it if DPI has been changed. + // And also note that don't use `mDefaultScale.scale` here since it may be + // different from the result of `GetWidgetCSSToDeviceScale()`. + // NOTE(emilio): We use GetWidgetCSSToDeviceScale() because the old scale is a + // widget scale, and we only use the current scale to scale up/down the + // relevant values. + + CSSToLayoutDeviceScale oldScale((float)aScale); + CSSToLayoutDeviceScale currentScale( + (float)treeOwnerAsWin->GetWidgetCSSToDeviceScale()); + + if (oldScale != currentScale) { + auto rescaleFunc = [&oldScale, ¤tScale](LayoutDeviceIntCoord& aVal) { + aVal = (LayoutDeviceCoord(aVal) / oldScale * currentScale).Rounded(); + }; + aRequest.mX.apply(rescaleFunc); + aRequest.mY.apply(rescaleFunc); + aRequest.mWidth.apply(rescaleFunc); + aRequest.mHeight.apply(rescaleFunc); + } + + // treeOwner is the chrome tree owner, but we wan't the content tree owner. + nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = do_GetInterface(treeOwner); + NS_ENSURE_TRUE(webBrowserChrome, IPC_OK()); + webBrowserChrome->SetDimensions(std::move(aRequest)); + return IPC_OK(); +} + +nsresult BrowserParent::UpdatePosition() { + RefPtr<nsFrameLoader> frameLoader = GetFrameLoader(); + if (!frameLoader) { + return NS_OK; + } + nsIntRect windowDims; + NS_ENSURE_SUCCESS(frameLoader->GetWindowDimensions(windowDims), + NS_ERROR_FAILURE); + // Avoid updating sizes here. + windowDims.SizeTo(mRect.Size()); + UpdateDimensions(windowDims, mDimensions); + return NS_OK; +} + +void BrowserParent::NotifyPositionUpdatedForContentsInPopup() { + if (CanonicalBrowsingContext* bc = GetBrowsingContext()) { + bc->PreOrderWalk([](BrowsingContext* aContext) { + if (WindowGlobalParent* windowGlobalParent = + aContext->Canonical()->GetCurrentWindowGlobal()) { + if (RefPtr<BrowserParent> browserParent = + windowGlobalParent->GetBrowserParent()) { + browserParent->UpdatePosition(); + } + } + }); + } +} + +void BrowserParent::UpdateDimensions(const nsIntRect& rect, + const ScreenIntSize& size) { + if (mIsDestroyed) { + return; + } + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + NS_WARNING("No widget found in BrowserParent::UpdateDimensions"); + return; + } + + LayoutDeviceIntPoint clientOffset = GetClientOffset(); + LayoutDeviceIntPoint chromeOffset = !GetBrowserBridgeParent() + ? -GetChildProcessOffset() + : LayoutDeviceIntPoint(); + + if (!mUpdatedDimensions || mDimensions != size || !mRect.IsEqualEdges(rect) || + clientOffset != mClientOffset || chromeOffset != mChromeOffset) { + mUpdatedDimensions = true; + mRect = rect; + mDimensions = size; + mClientOffset = clientOffset; + mChromeOffset = chromeOffset; + + Unused << SendUpdateDimensions(GetDimensionInfo()); + UpdateNativePointerLockCenter(widget); + } +} + +DimensionInfo BrowserParent::GetDimensionInfo() { + LayoutDeviceIntRect devicePixelRect = ViewAs<LayoutDevicePixel>( + mRect, PixelCastJustification::LayoutDeviceIsScreenForTabDims); + LayoutDeviceIntSize devicePixelSize = ViewAs<LayoutDevicePixel>( + mDimensions, PixelCastJustification::LayoutDeviceIsScreenForTabDims); + + CSSRect unscaledRect = devicePixelRect / mDefaultScale; + CSSSize unscaledSize = devicePixelSize / mDefaultScale; + DimensionInfo di(unscaledRect, unscaledSize, mClientOffset, mChromeOffset); + return di; +} + +void BrowserParent::UpdateNativePointerLockCenter(nsIWidget* aWidget) { + if (!mLockedNativePointer) { + return; + } + LayoutDeviceIntRect dims( + {0, 0}, + ViewAs<LayoutDevicePixel>( + mDimensions, PixelCastJustification::LayoutDeviceIsScreenForTabDims)); + aWidget->SetNativePointerLockCenter((dims + mChromeOffset).Center()); +} + +void BrowserParent::SizeModeChanged(const nsSizeMode& aSizeMode) { + if (!mIsDestroyed && aSizeMode != mSizeMode) { + mSizeMode = aSizeMode; + Unused << SendSizeModeChanged(aSizeMode); + } +} + +#if defined(MOZ_WIDGET_ANDROID) +void BrowserParent::DynamicToolbarMaxHeightChanged(ScreenIntCoord aHeight) { + if (!mIsDestroyed) { + Unused << SendDynamicToolbarMaxHeightChanged(aHeight); + } +} + +void BrowserParent::DynamicToolbarOffsetChanged(ScreenIntCoord aOffset) { + if (!mIsDestroyed) { + Unused << SendDynamicToolbarOffsetChanged(aOffset); + } +} +#endif + +void BrowserParent::HandleAccessKey(const WidgetKeyboardEvent& aEvent, + nsTArray<uint32_t>& aCharCodes) { + if (!mIsDestroyed) { + // Note that we don't need to mark aEvent is posted to a remote process + // because the event may be dispatched to it as normal keyboard event. + // Therefore, we should use local copy to send it. + WidgetKeyboardEvent localEvent(aEvent); + RequestingAccessKeyEventData::Set(localEvent); + Unused << SendHandleAccessKey(localEvent, aCharCodes); + } +} + +void BrowserParent::Activate(uint64_t aActionId) { + LOGBROWSERFOCUS(("Activate %p actionid: %" PRIu64, this, aActionId)); + if (!mIsDestroyed) { + SetTopLevelWebFocus(this); // Intentionally inside "if" + Unused << SendActivate(aActionId); + } +} + +void BrowserParent::Deactivate(bool aWindowLowering, uint64_t aActionId) { + LOGBROWSERFOCUS(("Deactivate %p actionid: %" PRIu64, this, aActionId)); + if (!aWindowLowering) { + UnsetTopLevelWebFocus(this); // Intentionally outside the next "if" + } + if (!mIsDestroyed) { + Unused << SendDeactivate(aActionId); + } +} + +#ifdef ACCESSIBILITY +a11y::PDocAccessibleParent* BrowserParent::AllocPDocAccessibleParent( + PDocAccessibleParent* aParent, const uint64_t&, + const MaybeDiscardedBrowsingContext&) { + // Reference freed in DeallocPDocAccessibleParent. + return a11y::DocAccessibleParent::New().take(); +} + +bool BrowserParent::DeallocPDocAccessibleParent(PDocAccessibleParent* aParent) { + // Free reference from AllocPDocAccessibleParent. + static_cast<a11y::DocAccessibleParent*>(aParent)->Release(); + return true; +} + +mozilla::ipc::IPCResult BrowserParent::RecvPDocAccessibleConstructor( + PDocAccessibleParent* aDoc, PDocAccessibleParent* aParentDoc, + const uint64_t& aParentID, + const MaybeDiscardedBrowsingContext& aBrowsingContext) { +# if defined(ANDROID) + MonitorAutoLock mal(nsAccessibilityService::GetAndroidMonitor()); +# endif + auto doc = static_cast<a11y::DocAccessibleParent*>(aDoc); + + // If this tab is already shutting down just mark the new actor as shutdown + // and ignore it. When the tab actor is destroyed it will be too. + if (mIsDestroyed) { + doc->MarkAsShutdown(); + return IPC_OK(); + } + + if (aParentDoc) { + // Iframe document rendered in the same process as its embedder. + // A document should never directly be the parent of another document. + // There should always be an outer doc accessible child of the outer + // document containing the child. + MOZ_ASSERT(aParentID); + if (!aParentID) { + return IPC_FAIL_NO_REASON(this); + } + + auto parentDoc = static_cast<a11y::DocAccessibleParent*>(aParentDoc); + if (parentDoc->IsShutdown()) { + // This can happen if parentDoc is an OOP iframe, but its embedder has + // been destroyed. (DocAccessibleParent::Destroy destroys any child + // documents.) The OOP iframe (and anything it embeds) will die soon + // anyway, so mark this document as shutdown and ignore it. + doc->MarkAsShutdown(); + return IPC_OK(); + } + + if (aBrowsingContext) { + doc->SetBrowsingContext(aBrowsingContext.get_canonical()); + } + + mozilla::ipc::IPCResult added = parentDoc->AddChildDoc(doc, aParentID); + if (!added) { +# ifdef DEBUG + return added; +# else + return IPC_OK(); +# endif + } + +# ifdef XP_WIN + if (a11y::nsWinUtils::IsWindowEmulationStarted()) { + doc->SetEmulatedWindowHandle(parentDoc->GetEmulatedWindowHandle()); + } +# endif + + return IPC_OK(); + } + + if (aBrowsingContext) { + doc->SetBrowsingContext(aBrowsingContext.get_canonical()); + } + + if (auto* bridge = GetBrowserBridgeParent()) { + // Iframe document rendered in a different process to its embedder. + // In this case, we don't get aParentDoc and aParentID. + MOZ_ASSERT(!aParentDoc && !aParentID); + doc->SetTopLevelInContentProcess(); + a11y::ProxyCreated(doc); + // It's possible the embedder accessible hasn't been set yet; e.g. + // a hidden iframe. In that case, embedderDoc will be null and this will + // be handled when the embedder is set. + if (a11y::DocAccessibleParent* embedderDoc = + bridge->GetEmbedderAccessibleDoc()) { + mozilla::ipc::IPCResult added = embedderDoc->AddChildDoc(bridge); + if (!added) { +# ifdef DEBUG + return added; +# else + return IPC_OK(); +# endif + } + } + return IPC_OK(); + } else { + // null aParentDoc means this document is at the top level in the child + // process. That means it makes no sense to get an id for an accessible + // that is its parent. + MOZ_ASSERT(!aParentID); + if (aParentID) { + return IPC_FAIL_NO_REASON(this); + } + + if (auto* prevTopLevel = GetTopLevelDocAccessible()) { + // Sometimes, we can get a new top level DocAccessibleParent before the + // old one gets destroyed. The old one will die pretty shortly anyway, + // so just destroy it now. If we don't do this, GetTopLevelDocAccessible() + // might return the wrong document for a short while. + prevTopLevel->Destroy(); + } + doc->SetTopLevel(); + a11y::DocManager::RemoteDocAdded(doc); +# ifdef XP_WIN + doc->MaybeInitWindowEmulation(); +# endif + } + return IPC_OK(); +} +#endif + +already_AddRefed<PFilePickerParent> BrowserParent::AllocPFilePickerParent( + const nsString& aTitle, const nsIFilePicker::Mode& aMode) { + return MakeAndAddRef<FilePickerParent>(aTitle, aMode); +} + +already_AddRefed<PSessionStoreParent> +BrowserParent::AllocPSessionStoreParent() { + RefPtr<BrowserSessionStore> sessionStore = + BrowserSessionStore::GetOrCreate(mBrowsingContext->Top()); + if (!sessionStore) { + return nullptr; + } + + return do_AddRef(new SessionStoreParent(mBrowsingContext, sessionStore)); +} + +IPCResult BrowserParent::RecvNewWindowGlobal( + ManagedEndpoint<PWindowGlobalParent>&& aEndpoint, + const WindowGlobalInit& aInit) { + RefPtr<CanonicalBrowsingContext> browsingContext = + CanonicalBrowsingContext::Get(aInit.context().mBrowsingContextId); + if (!browsingContext) { + return IPC_FAIL(this, "Cannot create for missing BrowsingContext"); + } + if (!aInit.principal()) { + return IPC_FAIL(this, "Cannot create without valid principal"); + } + + // Ensure we never load a document with a content principal in + // the wrong type of webIsolated process + EnumSet<ContentParent::ValidatePrincipalOptions> validationOptions = {}; + nsCOMPtr<nsIURI> docURI = aInit.documentURI(); + if (docURI->SchemeIs("blob") || docURI->SchemeIs("chrome")) { + // XXXckerschb TODO - Do not use SystemPrincipal for: + // Bug 1699385: Remove allowSystem for blobs + // Bug 1698087: chrome://devtools/content/shared/webextension-fallback.html + // chrome reftests, e.g. + // * chrome://reftest/content/writing-mode/ua-style-sheet-button-1a-ref.html + // * chrome://reftest/content/xul-document-load/test003.xhtml + // * chrome://reftest/content/forms/input/text/centering-1.xhtml + validationOptions = {ContentParent::ValidatePrincipalOptions::AllowSystem}; + } + + // Some reftests have frames inside their chrome URIs and those load + // about:blank: + if (xpc::IsInAutomation() && docURI->SchemeIs("about")) { + WindowGlobalParent* wgp = browsingContext->GetParentWindowContext(); + nsAutoCString spec; + NS_ENSURE_SUCCESS(docURI->GetSpec(spec), + IPC_FAIL(this, "Should have spec for about: URI")); + if (spec.Equals("about:blank") && wgp && + wgp->DocumentPrincipal()->IsSystemPrincipal()) { + validationOptions = { + ContentParent::ValidatePrincipalOptions::AllowSystem}; + } + } + + if (!mManager->ValidatePrincipal(aInit.principal(), validationOptions)) { + ContentParent::LogAndAssertFailedPrincipalValidationInfo(aInit.principal(), + __func__); + } + + // Construct our new WindowGlobalParent, bind, and initialize it. + RefPtr<WindowGlobalParent> wgp = + WindowGlobalParent::CreateDisconnected(aInit); + BindPWindowGlobalEndpoint(std::move(aEndpoint), wgp); + wgp->Init(); + return IPC_OK(); +} + +PVsyncParent* BrowserParent::AllocPVsyncParent() { + MOZ_ASSERT(!mVsyncParent); + mVsyncParent = new VsyncParent(); + UpdateVsyncParentVsyncDispatcher(); + return mVsyncParent.get(); +} + +bool BrowserParent::DeallocPVsyncParent(PVsyncParent* aActor) { + MOZ_ASSERT(aActor); + mVsyncParent = nullptr; + return true; +} + +void BrowserParent::UpdateVsyncParentVsyncDispatcher() { + if (!mVsyncParent) { + return; + } + + if (nsCOMPtr<nsIWidget> widget = GetWidget()) { + RefPtr<VsyncDispatcher> vsyncDispatcher = widget->GetVsyncDispatcher(); + if (!vsyncDispatcher) { + vsyncDispatcher = gfxPlatform::GetPlatform()->GetGlobalVsyncDispatcher(); + } + mVsyncParent->UpdateVsyncDispatcher(vsyncDispatcher); + } +} + +void BrowserParent::MouseEnterIntoWidget() { + if (nsCOMPtr<nsIWidget> widget = GetWidget()) { + // When we mouseenter the remote target, the remote target's cursor should + // become the current cursor. When we mouseexit, we stop. + mRemoteTargetSetsCursor = true; + widget->SetCursor(mCursor); + EventStateManager::ClearCursorSettingManager(); + } + + // Mark that we have missed a mouse enter event, so that + // the next mouse event will create a replacement mouse + // enter event and send it to the child. + mIsMouseEnterIntoWidgetEventSuppressed = true; +} + +void BrowserParent::SendRealMouseEvent(WidgetMouseEvent& aEvent) { + if (mIsDestroyed) { + return; + } + + // XXXedgar, if the synthesized mouse events could deliver to the correct + // process directly (see + // https://bugzilla.mozilla.org/show_bug.cgi?id=1549355), we probably don't + // need to check mReason then. + if (aEvent.mReason == WidgetMouseEvent::eReal) { + if (aEvent.mMessage == eMouseExitFromWidget) { + // Since we are leaving this remote target, so don't need to update + // sLastMouseRemoteTarget, and if we are sLastMouseRemoteTarget, reset it + // to null. + BrowserParent::UnsetLastMouseRemoteTarget(this); + } else { + // Last remote target should not be changed without eMouseExitFromWidget. + MOZ_ASSERT_IF(sLastMouseRemoteTarget, sLastMouseRemoteTarget == this); + sLastMouseRemoteTarget = this; + } + } + + aEvent.mRefPoint = TransformParentToChild(aEvent); + + if (nsCOMPtr<nsIWidget> widget = GetWidget()) { + // When we mouseenter the remote target, the remote target's cursor should + // become the current cursor. When we mouseexit, we stop. + if (eMouseEnterIntoWidget == aEvent.mMessage) { + mRemoteTargetSetsCursor = true; + widget->SetCursor(mCursor); + EventStateManager::ClearCursorSettingManager(); + } else if (eMouseExitFromWidget == aEvent.mMessage) { + mRemoteTargetSetsCursor = false; + } + } + if (!mIsReadyToHandleInputEvents) { + if (eMouseEnterIntoWidget == aEvent.mMessage) { + mIsMouseEnterIntoWidgetEventSuppressed = true; + } else if (eMouseExitFromWidget == aEvent.mMessage) { + mIsMouseEnterIntoWidgetEventSuppressed = false; + } + return; + } + + ScrollableLayerGuid guid; + uint64_t blockId; + ApzAwareEventRoutingToChild(&guid, &blockId, nullptr); + + bool isInputPriorityEventEnabled = Manager()->IsInputPriorityEventEnabled(); + + if (mIsMouseEnterIntoWidgetEventSuppressed) { + // In the case that the BrowserParent suppressed the eMouseEnterWidget event + // due to its corresponding BrowserChild wasn't ready to handle it, we have + // to resend it when the BrowserChild is ready. + mIsMouseEnterIntoWidgetEventSuppressed = false; + WidgetMouseEvent localEvent(aEvent); + localEvent.mMessage = eMouseEnterIntoWidget; + DebugOnly<bool> ret = + isInputPriorityEventEnabled + ? SendRealMouseEnterExitWidgetEvent(localEvent, guid, blockId) + : SendNormalPriorityRealMouseEnterExitWidgetEvent(localEvent, guid, + blockId); + NS_WARNING_ASSERTION(ret, "SendRealMouseEnterExitWidgetEvent() failed"); + MOZ_ASSERT(!ret || localEvent.HasBeenPostedToRemoteProcess()); + } + + if (eMouseMove == aEvent.mMessage) { + if (aEvent.mReason == WidgetMouseEvent::eSynthesized) { + DebugOnly<bool> ret = + isInputPriorityEventEnabled + ? SendSynthMouseMoveEvent(aEvent, guid, blockId) + : SendNormalPrioritySynthMouseMoveEvent(aEvent, guid, blockId); + NS_WARNING_ASSERTION(ret, "SendSynthMouseMoveEvent() failed"); + MOZ_ASSERT(!ret || aEvent.HasBeenPostedToRemoteProcess()); + return; + } + + if (!aEvent.mFlags.mIsSynthesizedForTests) { + DebugOnly<bool> ret = + isInputPriorityEventEnabled + ? SendRealMouseMoveEvent(aEvent, guid, blockId) + : SendNormalPriorityRealMouseMoveEvent(aEvent, guid, blockId); + NS_WARNING_ASSERTION(ret, "SendRealMouseMoveEvent() failed"); + MOZ_ASSERT(!ret || aEvent.HasBeenPostedToRemoteProcess()); + return; + } + + DebugOnly<bool> ret = + isInputPriorityEventEnabled + ? SendRealMouseMoveEventForTests(aEvent, guid, blockId) + : SendNormalPriorityRealMouseMoveEventForTests(aEvent, guid, + blockId); + NS_WARNING_ASSERTION(ret, "SendRealMouseMoveEventForTests() failed"); + MOZ_ASSERT(!ret || aEvent.HasBeenPostedToRemoteProcess()); + return; + } + + if (eMouseEnterIntoWidget == aEvent.mMessage || + eMouseExitFromWidget == aEvent.mMessage) { + DebugOnly<bool> ret = + isInputPriorityEventEnabled + ? SendRealMouseEnterExitWidgetEvent(aEvent, guid, blockId) + : SendNormalPriorityRealMouseEnterExitWidgetEvent(aEvent, guid, + blockId); + NS_WARNING_ASSERTION(ret, "SendRealMouseEnterExitWidgetEvent() failed"); + MOZ_ASSERT(!ret || aEvent.HasBeenPostedToRemoteProcess()); + return; + } + + DebugOnly<bool> ret = + isInputPriorityEventEnabled + ? SendRealMouseButtonEvent(aEvent, guid, blockId) + : SendNormalPriorityRealMouseButtonEvent(aEvent, guid, blockId); + NS_WARNING_ASSERTION(ret, "SendRealMouseButtonEvent() failed"); + MOZ_ASSERT(!ret || aEvent.HasBeenPostedToRemoteProcess()); +} + +LayoutDeviceToCSSScale BrowserParent::GetLayoutDeviceToCSSScale() { + Document* doc = (mFrameElement ? mFrameElement->OwnerDoc() : nullptr); + nsPresContext* ctx = (doc ? doc->GetPresContext() : nullptr); + return LayoutDeviceToCSSScale( + ctx ? (float)ctx->AppUnitsPerDevPixel() / AppUnitsPerCSSPixel() : 0.0f); +} + +bool BrowserParent::QueryDropLinksForVerification() { + // Before sending the dragEvent, we query the links being dragged and + // store them on the parent, to make sure the child can not modify links. + nsCOMPtr<nsIDragSession> dragSession = nsContentUtils::GetDragSession(); + if (!dragSession) { + NS_WARNING("No dragSession to query links for verification"); + return false; + } + + RefPtr<DataTransfer> initialDataTransfer = dragSession->GetDataTransfer(); + if (!initialDataTransfer) { + NS_WARNING("No initialDataTransfer to query links for verification"); + return false; + } + + nsCOMPtr<nsIDroppedLinkHandler> dropHandler = + do_GetService("@mozilla.org/content/dropped-link-handler;1"); + if (!dropHandler) { + NS_WARNING("No dropHandler to query links for verification"); + return false; + } + + // No more than one drop event can happen simultaneously; reset the link + // verification array and store all links that are being dragged. + mVerifyDropLinks.Clear(); + + nsTArray<RefPtr<nsIDroppedLinkItem>> droppedLinkItems; + dropHandler->QueryLinks(initialDataTransfer, droppedLinkItems); + + // Since the entire event is cancelled if one of the links is invalid, + // we can store all links on the parent side without any prior + // validation checks. + nsresult rv = NS_OK; + for (nsIDroppedLinkItem* item : droppedLinkItems) { + nsString tmp; + rv = item->GetUrl(tmp); + if (NS_FAILED(rv)) { + NS_WARNING("Failed to query url for verification"); + break; + } + mVerifyDropLinks.AppendElement(tmp); + + rv = item->GetName(tmp); + if (NS_FAILED(rv)) { + NS_WARNING("Failed to query name for verification"); + break; + } + mVerifyDropLinks.AppendElement(tmp); + + rv = item->GetType(tmp); + if (NS_FAILED(rv)) { + NS_WARNING("Failed to query type for verification"); + break; + } + mVerifyDropLinks.AppendElement(tmp); + } + if (NS_FAILED(rv)) { + mVerifyDropLinks.Clear(); + return false; + } + return true; +} + +void BrowserParent::SendRealDragEvent(WidgetDragEvent& aEvent, + uint32_t aDragAction, + uint32_t aDropEffect, + nsIPrincipal* aPrincipal, + nsIContentSecurityPolicy* aCsp) { + if (mIsDestroyed || !mIsReadyToHandleInputEvents) { + return; + } + MOZ_ASSERT(!Manager()->IsInputPriorityEventEnabled()); + aEvent.mRefPoint = TransformParentToChild(aEvent.mRefPoint); + if (aEvent.mMessage == eDrop) { + if (!QueryDropLinksForVerification()) { + return; + } + } + DebugOnly<bool> ret = PBrowserParent::SendRealDragEvent( + aEvent, aDragAction, aDropEffect, aPrincipal, aCsp); + NS_WARNING_ASSERTION(ret, "PBrowserParent::SendRealDragEvent() failed"); + MOZ_ASSERT(!ret || aEvent.HasBeenPostedToRemoteProcess()); +} + +void BrowserParent::SendMouseWheelEvent(WidgetWheelEvent& aEvent) { + if (mIsDestroyed || !mIsReadyToHandleInputEvents) { + return; + } + + ScrollableLayerGuid guid; + uint64_t blockId; + ApzAwareEventRoutingToChild(&guid, &blockId, nullptr); + aEvent.mRefPoint = TransformParentToChild(aEvent.mRefPoint); + DebugOnly<bool> ret = + Manager()->IsInputPriorityEventEnabled() + ? PBrowserParent::SendMouseWheelEvent(aEvent, guid, blockId) + : PBrowserParent::SendNormalPriorityMouseWheelEvent(aEvent, guid, + blockId); + + NS_WARNING_ASSERTION(ret, "PBrowserParent::SendMouseWheelEvent() failed"); + MOZ_ASSERT(!ret || aEvent.HasBeenPostedToRemoteProcess()); +} + +mozilla::ipc::IPCResult BrowserParent::RecvDispatchWheelEvent( + const mozilla::WidgetWheelEvent& aEvent) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + return IPC_OK(); + } + + WidgetWheelEvent localEvent(aEvent); + localEvent.mWidget = widget; + localEvent.mRefPoint = TransformChildToParent(localEvent.mRefPoint); + + widget->DispatchInputEvent(&localEvent); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvDispatchMouseEvent( + const mozilla::WidgetMouseEvent& aEvent) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + return IPC_OK(); + } + + WidgetMouseEvent localEvent(aEvent); + localEvent.mWidget = widget; + localEvent.mRefPoint = TransformChildToParent(localEvent.mRefPoint); + + widget->DispatchInputEvent(&localEvent); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvDispatchKeyboardEvent( + const mozilla::WidgetKeyboardEvent& aEvent) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + return IPC_OK(); + } + + WidgetKeyboardEvent localEvent(aEvent); + localEvent.mWidget = widget; + localEvent.mRefPoint = TransformChildToParent(localEvent.mRefPoint); + + widget->DispatchInputEvent(&localEvent); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvDispatchTouchEvent( + const mozilla::WidgetTouchEvent& aEvent) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + return IPC_OK(); + } + + WidgetTouchEvent localEvent(aEvent); + localEvent.mWidget = widget; + + for (uint32_t i = 0; i < localEvent.mTouches.Length(); i++) { + localEvent.mTouches[i]->mRefPoint = + TransformChildToParent(localEvent.mTouches[i]->mRefPoint); + } + + widget->DispatchInputEvent(&localEvent); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvRequestNativeKeyBindings( + const uint32_t& aType, const WidgetKeyboardEvent& aEvent, + nsTArray<CommandInt>* aCommands) { + MOZ_ASSERT(aCommands); + MOZ_ASSERT(aCommands->IsEmpty()); + + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + NativeKeyBindingsType keyBindingsType = + static_cast<NativeKeyBindingsType>(aType); + switch (keyBindingsType) { + case NativeKeyBindingsType::SingleLineEditor: + case NativeKeyBindingsType::MultiLineEditor: + case NativeKeyBindingsType::RichTextEditor: + break; + default: + return IPC_FAIL(this, "Invalid aType value"); + } + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + return IPC_OK(); + } + + WidgetKeyboardEvent localEvent(aEvent); + localEvent.mWidget = widget; + + if (NS_FAILED(widget->AttachNativeKeyEvent(localEvent))) { + return IPC_OK(); + } + + Maybe<WritingMode> writingMode; + if (RefPtr<widget::TextEventDispatcher> dispatcher = + widget->GetTextEventDispatcher()) { + writingMode = dispatcher->MaybeQueryWritingModeAtSelection(); + } + if (localEvent.InitEditCommandsFor(keyBindingsType, writingMode)) { + *aCommands = localEvent.EditCommandsConstRef(keyBindingsType).Clone(); + } + + return IPC_OK(); +} + +class SynthesizedEventObserver : public nsIObserver { + NS_DECL_ISUPPORTS + + public: + SynthesizedEventObserver(BrowserParent* aBrowserParent, + const uint64_t& aObserverId) + : mBrowserParent(aBrowserParent), mObserverId(aObserverId) { + MOZ_ASSERT(mBrowserParent); + } + + NS_IMETHOD Observe(nsISupports* aSubject, const char* aTopic, + const char16_t* aData) override { + if (!mBrowserParent || !mObserverId) { + // We already sent the notification, or we don't actually need to + // send any notification at all. + return NS_OK; + } + + if (mBrowserParent->IsDestroyed()) { + // If this happens it's probably a bug in the test that's triggering this. + NS_WARNING( + "BrowserParent was unexpectedly destroyed during event " + "synthesization!"); + } else if (!mBrowserParent->SendNativeSynthesisResponse( + mObserverId, nsCString(aTopic))) { + NS_WARNING("Unable to send native event synthesization response!"); + } + // Null out browserParent to indicate we already sent the response + mBrowserParent = nullptr; + return NS_OK; + } + + private: + virtual ~SynthesizedEventObserver() = default; + + RefPtr<BrowserParent> mBrowserParent; + uint64_t mObserverId; +}; + +NS_IMPL_ISUPPORTS(SynthesizedEventObserver, nsIObserver) + +class MOZ_STACK_CLASS AutoSynthesizedEventResponder { + public: + AutoSynthesizedEventResponder(BrowserParent* aBrowserParent, + const uint64_t& aObserverId, const char* aTopic) + : mObserver(new SynthesizedEventObserver(aBrowserParent, aObserverId)), + mTopic(aTopic) {} + + ~AutoSynthesizedEventResponder() { + // This may be a no-op if the observer already sent a response. + mObserver->Observe(nullptr, mTopic, nullptr); + } + + nsIObserver* GetObserver() { return mObserver; } + + private: + nsCOMPtr<nsIObserver> mObserver; + const char* mTopic; +}; + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativeKeyEvent( + const int32_t& aNativeKeyboardLayout, const int32_t& aNativeKeyCode, + const uint32_t& aModifierFlags, const nsString& aCharacters, + const nsString& aUnmodifiedCharacters, const uint64_t& aObserverId) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + AutoSynthesizedEventResponder responder(this, aObserverId, "keyevent"); + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativeKeyEvent( + aNativeKeyboardLayout, aNativeKeyCode, aModifierFlags, aCharacters, + aUnmodifiedCharacters, responder.GetObserver()); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativeMouseEvent( + const LayoutDeviceIntPoint& aPoint, const uint32_t& aNativeMessage, + const int16_t& aButton, const uint32_t& aModifierFlags, + const uint64_t& aObserverId) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + const uint32_t last = + static_cast<uint32_t>(nsIWidget::NativeMouseMessage::LeaveWindow); + NS_ENSURE_TRUE(aNativeMessage <= last, IPC_FAIL(this, "Bogus message")); + AutoSynthesizedEventResponder responder(this, aObserverId, "mouseevent"); + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativeMouseEvent( + aPoint, static_cast<nsIWidget::NativeMouseMessage>(aNativeMessage), + static_cast<mozilla::MouseButton>(aButton), + static_cast<nsIWidget::Modifiers>(aModifierFlags), + responder.GetObserver()); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativeMouseMove( + const LayoutDeviceIntPoint& aPoint, const uint64_t& aObserverId) { + // This is used by pointer lock API. So, even if it's not in the automation + // mode, we need to accept the request. + AutoSynthesizedEventResponder responder(this, aObserverId, "mousemove"); + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativeMouseMove(aPoint, responder.GetObserver()); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativeMouseScrollEvent( + const LayoutDeviceIntPoint& aPoint, const uint32_t& aNativeMessage, + const double& aDeltaX, const double& aDeltaY, const double& aDeltaZ, + const uint32_t& aModifierFlags, const uint32_t& aAdditionalFlags, + const uint64_t& aObserverId) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + AutoSynthesizedEventResponder responder(this, aObserverId, + "mousescrollevent"); + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativeMouseScrollEvent( + aPoint, aNativeMessage, aDeltaX, aDeltaY, aDeltaZ, aModifierFlags, + aAdditionalFlags, responder.GetObserver()); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativeTouchPoint( + const uint32_t& aPointerId, const TouchPointerState& aPointerState, + const LayoutDeviceIntPoint& aPoint, const double& aPointerPressure, + const uint32_t& aPointerOrientation, const uint64_t& aObserverId) { + // This is used by DevTools to emulate touch events from mouse events in the + // responsive design mode. Therefore, we should accept the IPC messages even + // if it's not in the automation mode but the browsing context is in RDM pane. + // And the IPC message could be just delayed after closing the responsive + // design mode. Therefore, we shouldn't return IPC_FAIL since doing it makes + // the tab crash. + if (!xpc::IsInAutomation()) { + NS_ENSURE_TRUE(mBrowsingContext, IPC_OK()); + NS_ENSURE_TRUE(mBrowsingContext->Top()->GetInRDMPane(), IPC_OK()); + } + + AutoSynthesizedEventResponder responder(this, aObserverId, "touchpoint"); + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativeTouchPoint(aPointerId, aPointerState, aPoint, + aPointerPressure, aPointerOrientation, + responder.GetObserver()); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativeTouchPadPinch( + const TouchpadGesturePhase& aEventPhase, const float& aScale, + const LayoutDeviceIntPoint& aPoint, const int32_t& aModifierFlags) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativeTouchPadPinch(aEventPhase, aScale, aPoint, + aModifierFlags); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativeTouchTap( + const LayoutDeviceIntPoint& aPoint, const bool& aLongTap, + const uint64_t& aObserverId) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + AutoSynthesizedEventResponder responder(this, aObserverId, "touchtap"); + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativeTouchTap(aPoint, aLongTap, responder.GetObserver()); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvClearNativeTouchSequence( + const uint64_t& aObserverId) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + AutoSynthesizedEventResponder responder(this, aObserverId, "cleartouch"); + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->ClearNativeTouchSequence(responder.GetObserver()); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativePenInput( + const uint32_t& aPointerId, const TouchPointerState& aPointerState, + const LayoutDeviceIntPoint& aPoint, const double& aPressure, + const uint32_t& aRotation, const int32_t& aTiltX, const int32_t& aTiltY, + const int32_t& aButton, const uint64_t& aObserverId) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + AutoSynthesizedEventResponder responder(this, aObserverId, "peninput"); + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativePenInput(aPointerId, aPointerState, aPoint, + aPressure, aRotation, aTiltX, aTiltY, + aButton, responder.GetObserver()); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativeTouchpadDoubleTap( + const LayoutDeviceIntPoint& aPoint, const uint32_t& aModifierFlags) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativeTouchpadDoubleTap(aPoint, aModifierFlags); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSynthesizeNativeTouchpadPan( + const TouchpadGesturePhase& aEventPhase, const LayoutDeviceIntPoint& aPoint, + const double& aDeltaX, const double& aDeltaY, const int32_t& aModifierFlags, + const uint64_t& aObserverId) { + NS_ENSURE_TRUE(xpc::IsInAutomation(), IPC_FAIL(this, "Unexpected event")); + + AutoSynthesizedEventResponder responder(this, aObserverId, + "touchpadpanevent"); + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SynthesizeNativeTouchpadPan(aEventPhase, aPoint, aDeltaX, aDeltaY, + aModifierFlags, + responder.GetObserver()); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvLockNativePointer() { + if (nsCOMPtr<nsIWidget> widget = GetWidget()) { + mLockedNativePointer = true; // do before updating the center + UpdateNativePointerLockCenter(widget); + widget->LockNativePointer(); + } + return IPC_OK(); +} + +void BrowserParent::UnlockNativePointer() { + if (!mLockedNativePointer) { + return; + } + if (nsCOMPtr<nsIWidget> widget = GetWidget()) { + widget->UnlockNativePointer(); + mLockedNativePointer = false; + } +} + +mozilla::ipc::IPCResult BrowserParent::RecvUnlockNativePointer() { + UnlockNativePointer(); + return IPC_OK(); +} + +void BrowserParent::SendRealKeyEvent(WidgetKeyboardEvent& aEvent) { + if (mIsDestroyed || !mIsReadyToHandleInputEvents) { + return; + } + aEvent.mRefPoint = TransformParentToChild(aEvent.mRefPoint); + + // NOTE: If you call `InitAllEditCommands()` for the other messages too, + // you also need to update + // TextEventDispatcher::DispatchKeyboardEventInternal(). + if (aEvent.mMessage == eKeyPress) { + // If current input context is editable, the edit commands are initialized + // by TextEventDispatcher::DispatchKeyboardEventInternal(). Otherwise, + // we need to do it here (they are not necessary for the parent process, + // therefore, we need to do it here for saving the runtime cost). + if (!aEvent.AreAllEditCommandsInitialized()) { + // XXX Is it good thing that the keypress event will be handled in an + // editor even though the user pressed the key combination before the + // focus change has not been completed in the parent process yet or + // focus change will happen? If no, we can stop doing this. + Maybe<WritingMode> writingMode; + if (aEvent.mWidget) { + if (RefPtr<widget::TextEventDispatcher> dispatcher = + aEvent.mWidget->GetTextEventDispatcher()) { + writingMode = dispatcher->MaybeQueryWritingModeAtSelection(); + } + } + aEvent.InitAllEditCommands(writingMode); + } + } else { + aEvent.PreventNativeKeyBindings(); + } + SentKeyEventData sendKeyEventData{ + aEvent.mKeyCode, aEvent.mCharCode, aEvent.mPseudoCharCode, + aEvent.mKeyNameIndex, aEvent.mCodeNameIndex, aEvent.mModifiers, + nsID::GenerateUUID()}; + const bool ok = + Manager()->IsInputPriorityEventEnabled() + ? PBrowserParent::SendRealKeyEvent(aEvent, sendKeyEventData.mUUID) + : PBrowserParent::SendNormalPriorityRealKeyEvent( + aEvent, sendKeyEventData.mUUID); + + NS_WARNING_ASSERTION(ok, "PBrowserParent::SendRealKeyEvent() failed"); + MOZ_ASSERT(!ok || aEvent.HasBeenPostedToRemoteProcess()); + if (ok && aEvent.IsWaitingReplyFromRemoteProcess()) { + mWaitingReplyKeyboardEvents.AppendElement(sendKeyEventData); + } +} + +void BrowserParent::SendRealTouchEvent(WidgetTouchEvent& aEvent) { + if (mIsDestroyed || !mIsReadyToHandleInputEvents) { + return; + } + + // PresShell::HandleEventInternal adds touches on touch end/cancel. This + // confuses remote content and the panning and zooming logic into thinking + // that the added touches are part of the touchend/cancel, when actually + // they're not. + if (aEvent.mMessage == eTouchEnd || aEvent.mMessage == eTouchCancel) { + aEvent.mTouches.RemoveElementsBy( + [](const auto& touch) { return !touch->mChanged; }); + } + + APZData apzData; + ApzAwareEventRoutingToChild(&apzData.guid, &apzData.blockId, + &apzData.apzResponse); + + if (mIsDestroyed) { + return; + } + + for (uint32_t i = 0; i < aEvent.mTouches.Length(); i++) { + aEvent.mTouches[i]->mRefPoint = + TransformParentToChild(aEvent.mTouches[i]->mRefPoint); + } + + static uint32_t sConsecutiveTouchMoveCount = 0; + if (aEvent.mMessage == eTouchMove) { + ++sConsecutiveTouchMoveCount; + SendRealTouchMoveEvent(aEvent, apzData, sConsecutiveTouchMoveCount); + return; + } + + sConsecutiveTouchMoveCount = 0; + DebugOnly<bool> ret = + Manager()->IsInputPriorityEventEnabled() + ? PBrowserParent::SendRealTouchEvent( + aEvent, apzData.guid, apzData.blockId, apzData.apzResponse) + : PBrowserParent::SendNormalPriorityRealTouchEvent( + aEvent, apzData.guid, apzData.blockId, apzData.apzResponse); + + NS_WARNING_ASSERTION(ret, "PBrowserParent::SendRealTouchEvent() failed"); + MOZ_ASSERT(!ret || aEvent.HasBeenPostedToRemoteProcess()); +} + +void BrowserParent::SendRealTouchMoveEvent( + WidgetTouchEvent& aEvent, APZData& aAPZData, + uint32_t aConsecutiveTouchMoveCount) { + // Touchmove handling is complicated, since IPC compression should be used + // only when there are consecutive touch objects for the same touch on the + // same BrowserParent. IPC compression can be disabled by switching to + // different IPC message. + static bool sIPCMessageType1 = true; + static TabId sLastTargetBrowserParent(0); + static Maybe<APZData> sPreviousAPZData; + // Artificially limit max touch points to 10. That should be in practise + // more than enough. + const uint32_t kMaxTouchMoveIdentifiers = 10; + static Maybe<int32_t> sLastTouchMoveIdentifiers[kMaxTouchMoveIdentifiers]; + + // Returns true if aIdentifiers contains all the touches in + // sLastTouchMoveIdentifiers. + auto LastTouchMoveIdentifiersContainedIn = + [&](const nsTArray<int32_t>& aIdentifiers) -> bool { + for (Maybe<int32_t>& entry : sLastTouchMoveIdentifiers) { + if (entry.isSome() && !aIdentifiers.Contains(entry.value())) { + return false; + } + } + return true; + }; + + // Cache touch identifiers in sLastTouchMoveIdentifiers array to be used + // when checking whether compression can be done for the next touchmove. + auto SetLastTouchMoveIdentifiers = + [&](const nsTArray<int32_t>& aIdentifiers) { + for (Maybe<int32_t>& entry : sLastTouchMoveIdentifiers) { + entry.reset(); + } + + MOZ_ASSERT(aIdentifiers.Length() <= kMaxTouchMoveIdentifiers); + for (uint32_t j = 0; j < aIdentifiers.Length(); ++j) { + sLastTouchMoveIdentifiers[j].emplace(aIdentifiers[j]); + } + }; + + AutoTArray<int32_t, kMaxTouchMoveIdentifiers> changedTouches; + bool preventCompression = !StaticPrefs::dom_events_compress_touchmove() || + // Ensure the very first touchmove isn't overridden + // by the second one, so that web pages can get + // accurate coordinates for the first touchmove. + aConsecutiveTouchMoveCount < 3 || + sPreviousAPZData.isNothing() || + sPreviousAPZData.value() != aAPZData || + sLastTargetBrowserParent != GetTabId() || + aEvent.mTouches.Length() > kMaxTouchMoveIdentifiers; + + if (!preventCompression) { + for (RefPtr<Touch>& touch : aEvent.mTouches) { + if (touch->mChanged) { + changedTouches.AppendElement(touch->mIdentifier); + } + } + + // Prevent compression if the new event has fewer or different touches + // than the old one. + preventCompression = !LastTouchMoveIdentifiersContainedIn(changedTouches); + } + + if (preventCompression) { + sIPCMessageType1 = !sIPCMessageType1; + } + + // Update the last touch move identifiers always, so that when the next + // event comes in, the new identifiers can be compared to the old ones. + // If the pref is disabled, this just does a quick small loop. + SetLastTouchMoveIdentifiers(changedTouches); + sPreviousAPZData.reset(); + sPreviousAPZData.emplace(aAPZData); + sLastTargetBrowserParent = GetTabId(); + + DebugOnly<bool> ret = true; + if (sIPCMessageType1) { + ret = + Manager()->IsInputPriorityEventEnabled() + ? PBrowserParent::SendRealTouchMoveEvent( + aEvent, aAPZData.guid, aAPZData.blockId, aAPZData.apzResponse) + : PBrowserParent::SendNormalPriorityRealTouchMoveEvent( + aEvent, aAPZData.guid, aAPZData.blockId, + aAPZData.apzResponse); + } else { + ret = + Manager()->IsInputPriorityEventEnabled() + ? PBrowserParent::SendRealTouchMoveEvent2( + aEvent, aAPZData.guid, aAPZData.blockId, aAPZData.apzResponse) + : PBrowserParent::SendNormalPriorityRealTouchMoveEvent2( + aEvent, aAPZData.guid, aAPZData.blockId, + aAPZData.apzResponse); + } + + NS_WARNING_ASSERTION(ret, "PBrowserParent::SendRealTouchMoveEvent() failed"); + MOZ_ASSERT(!ret || aEvent.HasBeenPostedToRemoteProcess()); +} + +bool BrowserParent::SendHandleTap( + TapType aType, const LayoutDevicePoint& aPoint, Modifiers aModifiers, + const ScrollableLayerGuid& aGuid, uint64_t aInputBlockId, + const Maybe<DoubleTapToZoomMetrics>& aDoubleTapToZoomMetrics) { + if (mIsDestroyed || !mIsReadyToHandleInputEvents) { + return false; + } + if ((aType == TapType::eSingleTap || aType == TapType::eSecondTap)) { + if (RefPtr<nsFocusManager> fm = nsFocusManager::GetFocusManager()) { + if (RefPtr<nsFrameLoader> frameLoader = GetFrameLoader()) { + if (RefPtr<Element> element = frameLoader->GetOwnerContent()) { + fm->SetFocus(element, nsIFocusManager::FLAG_BYMOUSE | + nsIFocusManager::FLAG_BYTOUCH | + nsIFocusManager::FLAG_NOSCROLL); + } + } + } + } + return Manager()->IsInputPriorityEventEnabled() + ? PBrowserParent::SendHandleTap( + aType, TransformParentToChild(aPoint), aModifiers, aGuid, + aInputBlockId, aDoubleTapToZoomMetrics) + : PBrowserParent::SendNormalPriorityHandleTap( + aType, TransformParentToChild(aPoint), aModifiers, aGuid, + aInputBlockId, aDoubleTapToZoomMetrics); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSyncMessage( + const nsString& aMessage, const ClonedMessageData& aData, + nsTArray<StructuredCloneData>* aRetVal) { + AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING("BrowserParent::RecvSyncMessage", + OTHER, aMessage); + MMPrinter::Print("BrowserParent::RecvSyncMessage", aMessage, aData); + + StructuredCloneData data; + ipc::UnpackClonedMessageData(aData, data); + + if (!ReceiveMessage(aMessage, true, &data, aRetVal)) { + return IPC_FAIL_NO_REASON(this); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvAsyncMessage( + const nsString& aMessage, const ClonedMessageData& aData) { + AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING("BrowserParent::RecvAsyncMessage", + OTHER, aMessage); + MMPrinter::Print("BrowserParent::RecvAsyncMessage", aMessage, aData); + + StructuredCloneData data; + ipc::UnpackClonedMessageData(aData, data); + + if (!ReceiveMessage(aMessage, false, &data, nullptr)) { + return IPC_FAIL_NO_REASON(this); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSetCursor( + const nsCursor& aCursor, const bool& aHasCustomCursor, + Maybe<BigBuffer>&& aCursorData, const uint32_t& aWidth, + const uint32_t& aHeight, const float& aResolutionX, + const float& aResolutionY, const uint32_t& aStride, + const gfx::SurfaceFormat& aFormat, const uint32_t& aHotspotX, + const uint32_t& aHotspotY, const bool& aForce) { + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + return IPC_OK(); + } + + if (aForce) { + widget->ClearCachedCursor(); + } + + nsCOMPtr<imgIContainer> cursorImage; + if (aHasCustomCursor) { + const bool cursorDataValid = [&] { + if (!aCursorData) { + return false; + } + auto expectedSize = CheckedInt<uint32_t>(aHeight) * aStride; + if (!expectedSize.isValid() || + expectedSize.value() != aCursorData->Size()) { + return false; + } + auto minStride = + CheckedInt<uint32_t>(aWidth) * gfx::BytesPerPixel(aFormat); + if (!minStride.isValid() || aStride < minStride.value()) { + return false; + } + return true; + }(); + if (!cursorDataValid) { + return IPC_FAIL(this, "Invalid custom cursor data"); + } + const gfx::IntSize size(aWidth, aHeight); + RefPtr<gfx::DataSourceSurface> customCursor = + gfx::CreateDataSourceSurfaceFromData(size, aFormat, aCursorData->Data(), + aStride); + + RefPtr<gfxDrawable> drawable = new gfxSurfaceDrawable(customCursor, size); + cursorImage = image::ImageOps::CreateFromDrawable(drawable); + } + + mCursor = nsIWidget::Cursor{aCursor, + std::move(cursorImage), + aHotspotX, + aHotspotY, + {aResolutionX, aResolutionY}}; + if (!mRemoteTargetSetsCursor) { + return IPC_OK(); + } + + widget->SetCursor(mCursor); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSetLinkStatus( + const nsString& aStatus) { + nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow = GetXULBrowserWindow(); + if (!xulBrowserWindow) { + return IPC_OK(); + } + + xulBrowserWindow->SetOverLink(aStatus); + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvShowTooltip( + const uint32_t& aX, const uint32_t& aY, const nsString& aTooltip, + const nsString& aDirection) { + nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow = GetXULBrowserWindow(); + if (!xulBrowserWindow) { + return IPC_OK(); + } + + // ShowTooltip will end up accessing XULElement properties in JS (specifically + // BoxObject). However, to get it to JS, we need to make sure we're a + // nsFrameLoaderOwner, which implies we're a XULFrameElement. We can then + // safely pass Element into JS. + RefPtr<nsFrameLoaderOwner> flo = do_QueryObject(mFrameElement); + if (!flo) return IPC_OK(); + + nsCOMPtr<Element> el = do_QueryInterface(flo); + if (!el) return IPC_OK(); + + if (NS_SUCCEEDED( + xulBrowserWindow->ShowTooltip(aX, aY, aTooltip, aDirection, el))) { + mShowingTooltip = true; + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvHideTooltip() { + mShowingTooltip = false; + + nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow = GetXULBrowserWindow(); + if (!xulBrowserWindow) { + return IPC_OK(); + } + + xulBrowserWindow->HideTooltip(); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvNotifyIMEFocus( + const ContentCache& aContentCache, const IMENotification& aIMENotification, + NotifyIMEFocusResolver&& aResolve) { + if (mIsDestroyed) { + return IPC_OK(); + } + + nsCOMPtr<nsIWidget> widget = GetTextInputHandlingWidget(); + if (!widget) { + aResolve(IMENotificationRequests()); + return IPC_OK(); + } + if (NS_WARN_IF(!aContentCache.IsValid())) { + return IPC_FAIL(this, "Invalid content cache data"); + } + mContentCache.AssignContent(aContentCache, widget, &aIMENotification); + IMEStateManager::NotifyIME(aIMENotification, widget, this); + + IMENotificationRequests requests; + if (aIMENotification.mMessage == NOTIFY_IME_OF_FOCUS) { + requests = widget->IMENotificationRequestsRef(); + } + aResolve(requests); + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvNotifyIMETextChange( + const ContentCache& aContentCache, + const IMENotification& aIMENotification) { + nsCOMPtr<nsIWidget> widget = GetTextInputHandlingWidget(); + if (!widget || !IMEStateManager::DoesBrowserParentHaveIMEFocus(this)) { + return IPC_OK(); + } + if (NS_WARN_IF(!aContentCache.IsValid())) { + return IPC_FAIL(this, "Invalid content cache data"); + } + mContentCache.AssignContent(aContentCache, widget, &aIMENotification); + mContentCache.MaybeNotifyIME(widget, aIMENotification); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvNotifyIMECompositionUpdate( + const ContentCache& aContentCache, + const IMENotification& aIMENotification) { + nsCOMPtr<nsIWidget> widget = GetTextInputHandlingWidget(); + if (!widget || !IMEStateManager::DoesBrowserParentHaveIMEFocus(this)) { + return IPC_OK(); + } + if (NS_WARN_IF(!aContentCache.IsValid())) { + return IPC_FAIL(this, "Invalid content cache data"); + } + mContentCache.AssignContent(aContentCache, widget, &aIMENotification); + mContentCache.MaybeNotifyIME(widget, aIMENotification); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvNotifyIMESelection( + const ContentCache& aContentCache, + const IMENotification& aIMENotification) { + nsCOMPtr<nsIWidget> widget = GetTextInputHandlingWidget(); + if (!widget || !IMEStateManager::DoesBrowserParentHaveIMEFocus(this)) { + return IPC_OK(); + } + if (NS_WARN_IF(!aContentCache.IsValid())) { + return IPC_FAIL(this, "Invalid content cache data"); + } + mContentCache.AssignContent(aContentCache, widget, &aIMENotification); + mContentCache.MaybeNotifyIME(widget, aIMENotification); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvUpdateContentCache( + const ContentCache& aContentCache) { + nsCOMPtr<nsIWidget> widget = GetTextInputHandlingWidget(); + if (!widget || !IMEStateManager::DoesBrowserParentHaveIMEFocus(this)) { + return IPC_OK(); + } + if (NS_WARN_IF(!aContentCache.IsValid())) { + return IPC_FAIL(this, "Invalid content cache data"); + } + mContentCache.AssignContent(aContentCache, widget); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvNotifyIMEMouseButtonEvent( + const IMENotification& aIMENotification, bool* aConsumedByIME) { + nsCOMPtr<nsIWidget> widget = GetTextInputHandlingWidget(); + if (!widget || !IMEStateManager::DoesBrowserParentHaveIMEFocus(this)) { + *aConsumedByIME = false; + return IPC_OK(); + } + nsresult rv = IMEStateManager::NotifyIME(aIMENotification, widget, this); + *aConsumedByIME = rv == NS_SUCCESS_EVENT_CONSUMED; + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvNotifyIMEPositionChange( + const ContentCache& aContentCache, + const IMENotification& aIMENotification) { + nsCOMPtr<nsIWidget> widget = GetTextInputHandlingWidget(); + if (!widget || !IMEStateManager::DoesBrowserParentHaveIMEFocus(this)) { + return IPC_OK(); + } + if (NS_WARN_IF(!aContentCache.IsValid())) { + return IPC_FAIL(this, "Invalid content cache data"); + } + mContentCache.AssignContent(aContentCache, widget, &aIMENotification); + mContentCache.MaybeNotifyIME(widget, aIMENotification); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvOnEventNeedingAckHandled( + const EventMessage& aMessage, const uint32_t& aCompositionId) { + // This is called when the child process receives WidgetCompositionEvent or + // WidgetSelectionEvent. + // FYI: Don't check if widget is nullptr here because it's more important to + // notify mContentCahce of this than handling something in it. + nsCOMPtr<nsIWidget> widget = GetTextInputHandlingWidget(); + + // While calling OnEventNeedingAckHandled(), BrowserParent *might* be + // destroyed since it may send notifications to IME. + RefPtr<BrowserParent> kungFuDeathGrip(this); + mContentCache.OnEventNeedingAckHandled(widget, aMessage, aCompositionId); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvRequestFocus( + const bool& aCanRaise, const CallerType aCallerType) { + LOGBROWSERFOCUS(("RecvRequestFocus %p, aCanRaise: %d", this, aCanRaise)); + if (BrowserBridgeParent* bridgeParent = GetBrowserBridgeParent()) { + mozilla::Unused << bridgeParent->SendRequestFocus(aCanRaise, aCallerType); + return IPC_OK(); + } + + if (!mFrameElement) { + return IPC_OK(); + } + + nsContentUtils::RequestFrameFocus(*mFrameElement, aCanRaise, aCallerType); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvWheelZoomChange(bool aIncrease) { + RefPtr<BrowsingContext> bc = GetBrowsingContext(); + if (!bc) { + return IPC_OK(); + } + + bc->Canonical()->DispatchWheelZoomChange(aIncrease); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvEnableDisableCommands( + const MaybeDiscarded<BrowsingContext>& aContext, const nsString& aAction, + nsTArray<nsCString>&& aEnabledCommands, + nsTArray<nsCString>&& aDisabledCommands) { + if (aContext.IsNullOrDiscarded()) { + return IPC_OK(); + } + + nsCOMPtr<nsIBrowserController> browserController = do_QueryActor( + "Controllers", aContext.get_canonical()->GetCurrentWindowGlobal()); + if (browserController) { + browserController->EnableDisableCommands(aAction, aEnabledCommands, + aDisabledCommands); + } + + return IPC_OK(); +} + +LayoutDeviceIntPoint BrowserParent::TransformPoint( + const LayoutDeviceIntPoint& aPoint, + const LayoutDeviceToLayoutDeviceMatrix4x4& aMatrix) { + LayoutDevicePoint floatPoint(aPoint); + LayoutDevicePoint floatTransformed = TransformPoint(floatPoint, aMatrix); + // The next line loses precision if an out-of-process iframe + // has been scaled or rotated. + return RoundedToInt(floatTransformed); +} + +LayoutDevicePoint BrowserParent::TransformPoint( + const LayoutDevicePoint& aPoint, + const LayoutDeviceToLayoutDeviceMatrix4x4& aMatrix) { + return aMatrix.TransformPoint(aPoint); +} + +LayoutDeviceIntPoint BrowserParent::TransformParentToChild( + const WidgetMouseEvent& aEvent) { + MOZ_ASSERT(aEvent.mWidget); + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget && widget != aEvent.mWidget) { + return TransformParentToChild( + aEvent.mRefPoint + + nsLayoutUtils::WidgetToWidgetOffset(aEvent.mWidget, widget)); + } + return TransformParentToChild(aEvent.mRefPoint); +} + +LayoutDeviceIntPoint BrowserParent::TransformParentToChild( + const LayoutDeviceIntPoint& aPoint) { + LayoutDeviceToLayoutDeviceMatrix4x4 matrix = + GetChildToParentConversionMatrix(); + if (!matrix.Invert()) { + return LayoutDeviceIntPoint(); + } + auto transformed = UntransformBy(matrix, aPoint); + if (!transformed) { + return LayoutDeviceIntPoint(); + } + return transformed.ref(); +} + +LayoutDevicePoint BrowserParent::TransformParentToChild( + const LayoutDevicePoint& aPoint) { + LayoutDeviceToLayoutDeviceMatrix4x4 matrix = + GetChildToParentConversionMatrix(); + if (!matrix.Invert()) { + return LayoutDevicePoint(); + } + auto transformed = UntransformBy(matrix, aPoint); + if (!transformed) { + return LayoutDeviceIntPoint(); + } + return transformed.ref(); +} + +LayoutDeviceIntPoint BrowserParent::TransformChildToParent( + const LayoutDeviceIntPoint& aPoint) { + return TransformPoint(aPoint, GetChildToParentConversionMatrix()); +} + +LayoutDevicePoint BrowserParent::TransformChildToParent( + const LayoutDevicePoint& aPoint) { + return TransformPoint(aPoint, GetChildToParentConversionMatrix()); +} + +LayoutDeviceIntRect BrowserParent::TransformChildToParent( + const LayoutDeviceIntRect& aRect) { + LayoutDeviceToLayoutDeviceMatrix4x4 matrix = + GetChildToParentConversionMatrix(); + LayoutDeviceRect floatRect(aRect); + // The outcome is not ideal if an out-of-process iframe has been rotated + LayoutDeviceRect floatTransformed = matrix.TransformBounds(floatRect); + // The next line loses precision if an out-of-process iframe + // has been scaled or rotated. + return RoundedToInt(floatTransformed); +} + +LayoutDeviceToLayoutDeviceMatrix4x4 +BrowserParent::GetChildToParentConversionMatrix() { + if (mChildToParentConversionMatrix) { + return *mChildToParentConversionMatrix; + } + LayoutDevicePoint offset(-GetChildProcessOffset()); + return LayoutDeviceToLayoutDeviceMatrix4x4::Translation(offset); +} + +void BrowserParent::SetChildToParentConversionMatrix( + const Maybe<LayoutDeviceToLayoutDeviceMatrix4x4>& aMatrix, + const ScreenRect& aRemoteDocumentRect) { + if (mChildToParentConversionMatrix == aMatrix && + mRemoteDocumentRect.isSome() && + mRemoteDocumentRect.value() == aRemoteDocumentRect) { + return; + } + + mChildToParentConversionMatrix = aMatrix; + mRemoteDocumentRect = Some(aRemoteDocumentRect); + if (mIsDestroyed) { + return; + } + mozilla::Unused << SendChildToParentMatrix(ToUnknownMatrix(aMatrix), + aRemoteDocumentRect); +} + +LayoutDeviceIntPoint BrowserParent::GetChildProcessOffset() { + // The "toplevel widget" in child processes is always at position + // 0,0. Map the event coordinates to match that. + + LayoutDeviceIntPoint offset(0, 0); + RefPtr<nsFrameLoader> frameLoader = GetFrameLoader(); + if (!frameLoader) { + return offset; + } + nsIFrame* targetFrame = frameLoader->GetPrimaryFrameOfOwningContent(); + if (!targetFrame) { + return offset; + } + + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + return offset; + } + + nsPresContext* presContext = targetFrame->PresContext(); + nsIFrame* rootFrame = presContext->PresShell()->GetRootFrame(); + nsView* rootView = rootFrame ? rootFrame->GetView() : nullptr; + if (!rootView) { + return offset; + } + + // Note that we don't want to take into account transforms here: +#if 0 + nsPoint pt(0, 0); + nsLayoutUtils::TransformPoint(targetFrame, rootFrame, pt); +#endif + // In practice, when transforms are applied to this frameLoader, we currently + // get the wrong results whether we take transforms into account here or not. + // But applying transforms here gives us the wrong results in all + // circumstances when transforms are applied, unless they're purely + // translational. It also gives us the wrong results whenever CSS transitions + // are used to apply transforms, since the offeets aren't updated as the + // transition is animated. + // + // What we actually need to do is apply the transforms to the coordinates of + // any events we send to the child, and reverse them for any screen + // coordinates that we retrieve from the child. + + // TODO: Once we take into account transforms here, set viewportType + // correctly. For now we use Visual as this means we don't apply + // the layout-to-visual transform in TranslateViewToWidget(). + ViewportType viewportType = ViewportType::Visual; + + nsPoint pt = targetFrame->GetOffsetTo(rootFrame); + return -nsLayoutUtils::TranslateViewToWidget(presContext, rootView, pt, + viewportType, widget); +} + +LayoutDeviceIntPoint BrowserParent::GetClientOffset() { + nsCOMPtr<nsIWidget> widget = GetWidget(); + nsCOMPtr<nsIWidget> docWidget = GetDocWidget(); + + if (widget == docWidget) { + return widget->GetClientOffset(); + } + + return (docWidget->GetClientOffset() + + nsLayoutUtils::WidgetToWidgetOffset(widget, docWidget)); +} + +void BrowserParent::StopIMEStateManagement() { + if (mIsDestroyed) { + return; + } + Unused << SendStopIMEStateManagement(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvReplyKeyEvent( + const WidgetKeyboardEvent& aEvent, const nsID& aUUID) { + NS_ENSURE_TRUE(mFrameElement, IPC_OK()); + + // First, verify aEvent is what we've sent to a remote process. + Maybe<size_t> index = [&]() -> Maybe<size_t> { + for (const size_t i : IntegerRange(mWaitingReplyKeyboardEvents.Length())) { + const SentKeyEventData& data = mWaitingReplyKeyboardEvents[i]; + if (data.mUUID.Equals(aUUID)) { + if (NS_WARN_IF(data.mKeyCode != aEvent.mKeyCode) || + NS_WARN_IF(data.mCharCode != aEvent.mCharCode) || + NS_WARN_IF(data.mPseudoCharCode != aEvent.mPseudoCharCode) || + NS_WARN_IF(data.mKeyNameIndex != aEvent.mKeyNameIndex) || + NS_WARN_IF(data.mCodeNameIndex != aEvent.mCodeNameIndex) || + NS_WARN_IF(data.mModifiers != aEvent.mModifiers)) { + // Got different event data from what we stored before dispatching an + // event with the ID. + return Nothing(); + } + return Some(i); + } + } + // No entry found. + return Nothing(); + }(); + if (MOZ_UNLIKELY(index.isNothing())) { + return IPC_FAIL(this, "Bogus reply keyboard event"); + } + // Don't discard the older keyboard events because the order may be changed if + // the remote process has a event listener which takes too long time and while + // the freezing, user may switch the tab, or if the remote process sends + // synchronous XMLHttpRequest. + mWaitingReplyKeyboardEvents.RemoveElementAt(*index); + + // If the event propagation was stopped by the child, it means that the event + // was ignored in the child. In the case, we should ignore it too because the + // focused web app didn't have a chance to prevent its default. + if (aEvent.PropagationStopped()) { + return IPC_OK(); + } + + WidgetKeyboardEvent localEvent(aEvent); + localEvent.MarkAsHandledInRemoteProcess(); + + // Here we convert the WidgetEvent that we received to an Event + // to be able to dispatch it to the <browser> element as the target element. + RefPtr<nsPresContext> presContext = + mFrameElement->OwnerDoc()->GetPresContext(); + NS_ENSURE_TRUE(presContext, IPC_OK()); + + AutoHandlingUserInputStatePusher userInpStatePusher(localEvent.IsTrusted(), + &localEvent); + + nsEventStatus status = nsEventStatus_eIgnore; + + // Handle access key in this process before dispatching reply event because + // ESM handles it before dispatching the event to the DOM tree. + if (localEvent.mMessage == eKeyPress && + (localEvent.ModifiersMatchWithAccessKey(AccessKeyType::eChrome) || + localEvent.ModifiersMatchWithAccessKey(AccessKeyType::eContent))) { + RefPtr<EventStateManager> esm = presContext->EventStateManager(); + AutoTArray<uint32_t, 10> accessCharCodes; + localEvent.GetAccessKeyCandidates(accessCharCodes); + if (esm->HandleAccessKey(&localEvent, presContext, accessCharCodes)) { + status = nsEventStatus_eConsumeNoDefault; + } + } + + RefPtr<Element> frameElement = mFrameElement; + EventDispatcher::Dispatch(frameElement, presContext, &localEvent, nullptr, + &status); + + if (!localEvent.DefaultPrevented() && + !localEvent.mFlags.mIsSynthesizedForTests) { + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->PostHandleKeyEvent(&localEvent); + localEvent.StopPropagation(); + } + } + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvAccessKeyNotHandled( + const WidgetKeyboardEvent& aEvent) { + NS_ENSURE_TRUE(mFrameElement, IPC_OK()); + + // This is called only when this process had focus and HandleAccessKey + // message was posted to all remote process and each remote process didn't + // execute any content access keys. + + if (MOZ_UNLIKELY(aEvent.mMessage != eKeyPress || !aEvent.IsTrusted())) { + return IPC_FAIL(this, "Called with unexpected event"); + } + + // If there is no requesting event, the event may have already been handled + // when it's returned from another remote process. + if (MOZ_UNLIKELY(!RequestingAccessKeyEventData::IsSet())) { + return IPC_OK(); + } + + // If the event does not match with the one which we requested a remote + // process to handle access key of (that means that we has already requested + // for another key press), we should ignore this call because user focuses + // to the last key press. + if (MOZ_UNLIKELY(!RequestingAccessKeyEventData::Equals(aEvent))) { + return IPC_OK(); + } + + RequestingAccessKeyEventData::Clear(); + + WidgetKeyboardEvent localEvent(aEvent); + localEvent.MarkAsHandledInRemoteProcess(); + localEvent.mMessage = eAccessKeyNotFound; + + // Here we convert the WidgetEvent that we received to an Event + // to be able to dispatch it to the <browser> element as the target element. + Document* doc = mFrameElement->OwnerDoc(); + PresShell* presShell = doc->GetPresShell(); + NS_ENSURE_TRUE(presShell, IPC_OK()); + + if (presShell->CanDispatchEvent()) { + RefPtr<nsPresContext> presContext = presShell->GetPresContext(); + NS_ENSURE_TRUE(presContext, IPC_OK()); + + RefPtr<Element> frameElement = mFrameElement; + EventDispatcher::Dispatch(frameElement, presContext, &localEvent); + } + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvRegisterProtocolHandler( + const nsString& aScheme, nsIURI* aHandlerURI, const nsString& aTitle, + nsIURI* aDocURI) { + nsCOMPtr<nsIWebProtocolHandlerRegistrar> registrar = + do_GetService(NS_WEBPROTOCOLHANDLERREGISTRAR_CONTRACTID); + if (registrar) { + registrar->RegisterProtocolHandler(aScheme, aHandlerURI, aTitle, aDocURI, + mFrameElement); + } + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvOnStateChange( + const WebProgressData& aWebProgressData, const RequestData& aRequestData, + const uint32_t aStateFlags, const nsresult aStatus, + const Maybe<WebProgressStateChangeData>& aStateChangeData) { + RefPtr<CanonicalBrowsingContext> browsingContext = + BrowsingContextForWebProgress(aWebProgressData); + if (!browsingContext) { + return IPC_OK(); + } + + nsCOMPtr<nsIRequest> request; + if (aRequestData.requestURI()) { + request = MakeAndAddRef<RemoteWebProgressRequest>( + aRequestData.requestURI(), aRequestData.originalRequestURI(), + aRequestData.matchedList()); + } + + if (aStateChangeData.isSome()) { + if (!browsingContext->IsTopContent()) { + return IPC_FAIL( + this, + "Unexpected WebProgressStateChangeData for non toplevel webProgress"); + } + + if (nsCOMPtr<nsIBrowser> browser = GetBrowser()) { + Unused << browser->SetIsNavigating(aStateChangeData->isNavigating()); + Unused << browser->SetMayEnableCharacterEncodingMenu( + aStateChangeData->mayEnableCharacterEncodingMenu()); + Unused << browser->UpdateForStateChange(aStateChangeData->charset(), + aStateChangeData->documentURI(), + aStateChangeData->contentType()); + } + } + + if (auto* listener = browsingContext->GetWebProgress()) { + listener->OnStateChange(listener, request, aStateFlags, aStatus); + } + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvOnProgressChange( + const int32_t aCurTotalProgress, const int32_t aMaxTotalProgress) { + // We only collect progress change notifications for the toplevel + // BrowserParent. + // FIXME: In the future, consider merging in progress change information from + // oop subframes. + if (!GetBrowsingContext()->IsTopContent() || + !GetBrowsingContext()->GetWebProgress()) { + return IPC_OK(); + } + + GetBrowsingContext()->GetWebProgress()->OnProgressChange( + nullptr, nullptr, 0, 0, aCurTotalProgress, aMaxTotalProgress); + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvOnLocationChange( + const WebProgressData& aWebProgressData, const RequestData& aRequestData, + nsIURI* aLocation, const uint32_t aFlags, const bool aCanGoBack, + const bool aCanGoForward, + const Maybe<WebProgressLocationChangeData>& aLocationChangeData) { + RefPtr<CanonicalBrowsingContext> browsingContext = + BrowsingContextForWebProgress(aWebProgressData); + if (!browsingContext) { + return IPC_OK(); + } + + nsCOMPtr<nsIRequest> request; + if (aRequestData.requestURI()) { + request = MakeAndAddRef<RemoteWebProgressRequest>( + aRequestData.requestURI(), aRequestData.originalRequestURI(), + aRequestData.matchedList()); + } + + browsingContext->SetCurrentRemoteURI(aLocation); + + nsCOMPtr<nsIBrowser> browser = GetBrowser(); + if (!mozilla::SessionHistoryInParent() && browser) { + Unused << browser->UpdateWebNavigationForLocationChange(aCanGoBack, + aCanGoForward); + } + + if (aLocationChangeData.isSome()) { + if (!browsingContext->IsTopContent()) { + return IPC_FAIL(this, + "Unexpected WebProgressLocationChangeData for non " + "toplevel webProgress"); + } + + if (browser) { + Unused << browser->SetIsNavigating(aLocationChangeData->isNavigating()); + Unused << browser->UpdateForLocationChange( + aLocation, aLocationChangeData->charset(), + aLocationChangeData->mayEnableCharacterEncodingMenu(), + aLocationChangeData->documentURI(), aLocationChangeData->title(), + aLocationChangeData->contentPrincipal(), + aLocationChangeData->contentPartitionedPrincipal(), + aLocationChangeData->csp(), aLocationChangeData->referrerInfo(), + aLocationChangeData->isSyntheticDocument(), + aLocationChangeData->requestContextID().isSome(), + aLocationChangeData->requestContextID().valueOr(0), + aLocationChangeData->contentType()); + } + } + + if (auto* listener = browsingContext->GetWebProgress()) { + listener->OnLocationChange(listener, request, aLocation, aFlags); + } + + // Since we've now changed Documents, notify the BrowsingContext that we've + // changed. Ideally we'd just let the BrowsingContext do this when it changes + // the current window global, but that happens before this and we have a lot + // of tests that depend on the specific ordering of messages. + if (browsingContext->IsTopContent() && + !(aFlags & nsIWebProgressListener::LOCATION_CHANGE_SAME_DOCUMENT)) { + browsingContext->UpdateSecurityState(); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvOnStatusChange( + const nsString& aMessage) { + // We only collect status change notifications for the toplevel + // BrowserParent. + // FIXME: In the future, consider merging in status change information from + // oop subframes. + if (!GetBrowsingContext()->IsTopContent() || + !GetBrowsingContext()->GetWebProgress()) { + return IPC_OK(); + } + + GetBrowsingContext()->GetWebProgress()->OnStatusChange(nullptr, nullptr, + NS_OK, aMessage.get()); + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvNavigationFinished() { + nsCOMPtr<nsIBrowser> browser = + mFrameElement ? mFrameElement->AsBrowser() : nullptr; + + if (browser) { + browser->SetIsNavigating(false); + } + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvNotifyContentBlockingEvent( + const uint32_t& aEvent, const RequestData& aRequestData, + const bool aBlocked, const nsACString& aTrackingOrigin, + nsTArray<nsCString>&& aTrackingFullHashes, + const Maybe< + mozilla::ContentBlockingNotifier::StorageAccessPermissionGrantedReason>& + aReason, + const Maybe<mozilla::ContentBlockingNotifier::CanvasFingerprinter>& + aCanvasFingerprinter, + const Maybe<bool>& aCanvasFingerprinterKnownText) { + RefPtr<BrowsingContext> bc = GetBrowsingContext(); + + if (!bc || bc->IsDiscarded()) { + return IPC_OK(); + } + + // Get the top-level browsing context. + bc = bc->Top(); + RefPtr<dom::WindowGlobalParent> wgp = + bc->Canonical()->GetCurrentWindowGlobal(); + + // The WindowGlobalParent would be null while running the test + // browser_339445.js. This is unexpected and we will address this in a + // following bug. For now, we first workaround this issue. + if (!wgp) { + return IPC_OK(); + } + + nsCOMPtr<nsIRequest> request = MakeAndAddRef<RemoteWebProgressRequest>( + aRequestData.requestURI(), aRequestData.originalRequestURI(), + aRequestData.matchedList()); + + wgp->NotifyContentBlockingEvent( + aEvent, request, aBlocked, aTrackingOrigin, aTrackingFullHashes, aReason, + aCanvasFingerprinter, aCanvasFingerprinterKnownText); + + return IPC_OK(); +} + +already_AddRefed<nsIBrowser> BrowserParent::GetBrowser() { + nsCOMPtr<nsIBrowser> browser; + RefPtr<Element> currentElement = mFrameElement; + + // In Responsive Design Mode, mFrameElement will be the <iframe mozbrowser>, + // but we want the <xul:browser> that it is embedded in. + while (currentElement) { + browser = currentElement->AsBrowser(); + if (browser) { + break; + } + + BrowsingContext* browsingContext = + currentElement->OwnerDoc()->GetBrowsingContext(); + currentElement = + browsingContext ? browsingContext->GetEmbedderElement() : nullptr; + } + + return browser.forget(); +} + +already_AddRefed<CanonicalBrowsingContext> +BrowserParent::BrowsingContextForWebProgress( + const WebProgressData& aWebProgressData) { + // Look up the BrowsingContext which this notification was fired for. + if (aWebProgressData.browsingContext().IsNullOrDiscarded()) { + NS_WARNING("WebProgress Ignored: BrowsingContext is null or discarded"); + return nullptr; + } + RefPtr<CanonicalBrowsingContext> browsingContext = + aWebProgressData.browsingContext().get_canonical(); + + // Double-check that we actually manage this BrowsingContext, and are not + // receiving a malformed or out-of-date request. browsingContext should either + // be the toplevel one managed by this BrowserParent, or embedded within a + // WindowGlobalParent managed by this BrowserParent. + if (browsingContext != mBrowsingContext) { + WindowGlobalParent* embedder = browsingContext->GetParentWindowContext(); + if (!embedder || embedder->GetBrowserParent() != this) { + NS_WARNING("WebProgress Ignored: wrong embedder process"); + return nullptr; + } + } + + // The current process for this BrowsingContext may have changed since the + // notification was fired. Don't fire events for it anymore, as ownership of + // the BrowsingContext has been moved elsewhere. + if (RefPtr<WindowGlobalParent> current = + browsingContext->GetCurrentWindowGlobal(); + current && current->GetBrowserParent() != this) { + NS_WARNING("WebProgress Ignored: no longer current window global"); + return nullptr; + } + + if (RefPtr<BrowsingContextWebProgress> progress = + browsingContext->GetWebProgress()) { + progress->SetLoadType(aWebProgressData.loadType()); + } + + return browsingContext.forget(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvIntrinsicSizeOrRatioChanged( + const Maybe<IntrinsicSize>& aIntrinsicSize, + const Maybe<AspectRatio>& aIntrinsicRatio) { + BrowserBridgeParent* bridge = GetBrowserBridgeParent(); + if (!bridge || !bridge->CanSend()) { + return IPC_OK(); + } + + Unused << bridge->SendIntrinsicSizeOrRatioChanged(aIntrinsicSize, + aIntrinsicRatio); + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvImageLoadComplete( + const nsresult& aResult) { + BrowserBridgeParent* bridge = GetBrowserBridgeParent(); + if (!bridge || !bridge->CanSend()) { + return IPC_OK(); + } + + Unused << bridge->SendImageLoadComplete(aResult); + + return IPC_OK(); +} + +bool BrowserParent::HandleQueryContentEvent(WidgetQueryContentEvent& aEvent) { + nsCOMPtr<nsIWidget> textInputHandlingWidget = GetTextInputHandlingWidget(); + if (!textInputHandlingWidget) { + return true; + } + if (!mContentCache.HandleQueryContentEvent(aEvent, textInputHandlingWidget) || + NS_WARN_IF(aEvent.Failed())) { + return true; + } + switch (aEvent.mMessage) { + case eQueryTextRect: + case eQueryCaretRect: + case eQueryEditorRect: { + nsCOMPtr<nsIWidget> browserWidget = GetWidget(); + if (browserWidget != textInputHandlingWidget) { + aEvent.mReply->mRect += nsLayoutUtils::WidgetToWidgetOffset( + browserWidget, textInputHandlingWidget); + } + aEvent.mReply->mRect = TransformChildToParent(aEvent.mReply->mRect); + break; + } + default: + break; + } + return true; +} + +bool BrowserParent::SendCompositionEvent(WidgetCompositionEvent& aEvent, + uint32_t aCompositionId) { + if (mIsDestroyed) { + return false; + } + + // When the composition is handled in a remote process, we need to handle + // commit/cancel result for composition with the composition ID to avoid + // to abort newer composition. Therefore, we need to let the remote process + // know the composition ID. + MOZ_ASSERT(aCompositionId != 0); + aEvent.mCompositionId = aCompositionId; + + if (!mContentCache.OnCompositionEvent(aEvent)) { + return true; + } + + bool ret = Manager()->IsInputPriorityEventEnabled() + ? PBrowserParent::SendCompositionEvent(aEvent) + : PBrowserParent::SendNormalPriorityCompositionEvent(aEvent); + if (NS_WARN_IF(!ret)) { + return false; + } + MOZ_ASSERT(aEvent.HasBeenPostedToRemoteProcess()); + return true; +} + +bool BrowserParent::SendSelectionEvent(WidgetSelectionEvent& aEvent) { + if (mIsDestroyed) { + return false; + } + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + return true; + } + mContentCache.OnSelectionEvent(aEvent); + bool ret = Manager()->IsInputPriorityEventEnabled() + ? PBrowserParent::SendSelectionEvent(aEvent) + : PBrowserParent::SendNormalPrioritySelectionEvent(aEvent); + if (NS_WARN_IF(!ret)) { + return false; + } + MOZ_ASSERT(aEvent.HasBeenPostedToRemoteProcess()); + aEvent.mSucceeded = true; + return true; +} + +bool BrowserParent::SendInsertText(const nsString& aStringToInsert) { + if (mIsDestroyed) { + return false; + } + return Manager()->IsInputPriorityEventEnabled() + ? PBrowserParent::SendInsertText(aStringToInsert) + : PBrowserParent::SendNormalPriorityInsertText(aStringToInsert); +} + +bool BrowserParent::SendPasteTransferable(IPCTransferable&& aTransferable) { + return PBrowserParent::SendPasteTransferable(std::move(aTransferable)); +} + +/* static */ +void BrowserParent::SetTopLevelWebFocus(BrowserParent* aBrowserParent) { + BrowserParent* old = GetFocused(); + if (aBrowserParent && !aBrowserParent->GetBrowserBridgeParent()) { + // top-level Web content + sTopLevelWebFocus = aBrowserParent; + BrowserParent* bp = UpdateFocus(); + if (old != bp) { + LOGBROWSERFOCUS( + ("SetTopLevelWebFocus updated focus; old: %p, new: %p", old, bp)); + IMEStateManager::OnFocusMovedBetweenBrowsers(old, bp); + } + } +} + +/* static */ +void BrowserParent::UnsetTopLevelWebFocus(BrowserParent* aBrowserParent) { + BrowserParent* old = GetFocused(); + if (sTopLevelWebFocus == aBrowserParent) { + // top-level Web content + sTopLevelWebFocus = nullptr; + sFocus = nullptr; + if (old) { + LOGBROWSERFOCUS( + ("UnsetTopLevelWebFocus moved focus to chrome; old: %p", old)); + IMEStateManager::OnFocusMovedBetweenBrowsers(old, nullptr); + } + } +} + +/* static */ +void BrowserParent::UpdateFocusFromBrowsingContext() { + BrowserParent* old = GetFocused(); + BrowserParent* bp = UpdateFocus(); + if (old != bp) { + LOGBROWSERFOCUS( + ("UpdateFocusFromBrowsingContext updated focus; old: %p, new: %p", old, + bp)); + IMEStateManager::OnFocusMovedBetweenBrowsers(old, bp); + } +} + +/* static */ +BrowserParent* BrowserParent::UpdateFocus() { + if (!sTopLevelWebFocus) { + sFocus = nullptr; + return nullptr; + } + nsFocusManager* fm = nsFocusManager::GetFocusManager(); + if (fm) { + BrowsingContext* bc = fm->GetFocusedBrowsingContextInChrome(); + if (bc) { + BrowsingContext* top = bc->Top(); + MOZ_ASSERT(top, "Should always have a top BrowsingContext."); + CanonicalBrowsingContext* canonicalTop = top->Canonical(); + MOZ_ASSERT(canonicalTop, + "Casting to canonical should always be possible in the parent " + "process (top case)."); + WindowGlobalParent* globalTop = canonicalTop->GetCurrentWindowGlobal(); + if (globalTop) { + RefPtr<BrowserParent> globalTopParent = globalTop->GetBrowserParent(); + if (sTopLevelWebFocus == globalTopParent) { + CanonicalBrowsingContext* canonical = bc->Canonical(); + MOZ_ASSERT( + canonical, + "Casting to canonical should always be possible in the parent " + "process."); + WindowGlobalParent* global = canonical->GetCurrentWindowGlobal(); + if (global) { + RefPtr<BrowserParent> parent = global->GetBrowserParent(); + sFocus = parent; + return sFocus; + } + LOGBROWSERFOCUS( + ("Focused BrowsingContext did not have WindowGlobalParent.")); + } + } else { + LOGBROWSERFOCUS( + ("Top-level BrowsingContext did not have WindowGlobalParent.")); + } + } + } + sFocus = sTopLevelWebFocus; + return sFocus; +} + +/* static */ +void BrowserParent::UnsetTopLevelWebFocusAll() { + if (sTopLevelWebFocus) { + UnsetTopLevelWebFocus(sTopLevelWebFocus); + } +} + +/* static */ +void BrowserParent::UnsetLastMouseRemoteTarget(BrowserParent* aBrowserParent) { + if (sLastMouseRemoteTarget == aBrowserParent) { + sLastMouseRemoteTarget = nullptr; + } +} + +mozilla::ipc::IPCResult BrowserParent::RecvRequestIMEToCommitComposition( + const bool& aCancel, const uint32_t& aCompositionId, bool* aIsCommitted, + nsString* aCommittedString) { + nsCOMPtr<nsIWidget> widget = GetTextInputHandlingWidget(); + if (!widget) { + *aIsCommitted = false; + return IPC_OK(); + } + + *aIsCommitted = mContentCache.RequestIMEToCommitComposition( + widget, aCancel, aCompositionId, *aCommittedString); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvGetInputContext( + widget::IMEState* aState) { + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + *aState = widget::IMEState(IMEEnabled::Disabled, + IMEState::OPEN_STATE_NOT_SUPPORTED); + return IPC_OK(); + } + + *aState = widget->GetInputContext().mIMEState; + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvSetInputContext( + const InputContext& aContext, const InputContextAction& aAction) { + IMEStateManager::SetInputContextForChildProcess(this, aContext, aAction); + return IPC_OK(); +} + +bool BrowserParent::ReceiveMessage(const nsString& aMessage, bool aSync, + StructuredCloneData* aData, + nsTArray<StructuredCloneData>* aRetVal) { + // If we're for an oop iframe, don't deliver messages to the wrong place. + if (mBrowserBridgeParent) { + return true; + } + + RefPtr<nsFrameLoader> frameLoader = GetFrameLoader(true); + if (frameLoader && frameLoader->GetFrameMessageManager()) { + RefPtr<nsFrameMessageManager> manager = + frameLoader->GetFrameMessageManager(); + + manager->ReceiveMessage(mFrameElement, frameLoader, aMessage, aSync, aData, + aRetVal, IgnoreErrors()); + } + return true; +} + +// nsIAuthPromptProvider + +// This method is largely copied from nsDocShell::GetAuthPrompt +NS_IMETHODIMP +BrowserParent::GetAuthPrompt(uint32_t aPromptReason, const nsIID& iid, + void** aResult) { + // we're either allowing auth, or it's a proxy request + nsresult rv; + nsCOMPtr<nsIPromptFactory> wwatch = + do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsPIDOMWindowOuter> window; + RefPtr<Element> frame = mFrameElement; + if (frame) window = frame->OwnerDoc()->GetWindow(); + + // Get an auth prompter for our window so that the parenting + // of the dialogs works as it should when using tabs. + nsCOMPtr<nsISupports> prompt; + rv = wwatch->GetPrompt(window, iid, getter_AddRefs(prompt)); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsILoginManagerAuthPrompter> prompter = do_QueryInterface(prompt); + if (prompter) { + prompter->SetBrowser(mFrameElement); + } + + *aResult = prompt.forget().take(); + return NS_OK; +} + +already_AddRefed<PColorPickerParent> BrowserParent::AllocPColorPickerParent( + const nsString& aTitle, const nsString& aInitialColor, + const nsTArray<nsString>& aDefaultColors) { + return MakeAndAddRef<ColorPickerParent>(aTitle, aInitialColor, + aDefaultColors); +} + +already_AddRefed<nsFrameLoader> BrowserParent::GetFrameLoader( + bool aUseCachedFrameLoaderAfterDestroy) const { + if (mIsDestroyed && !aUseCachedFrameLoaderAfterDestroy) { + return nullptr; + } + + if (mFrameLoader) { + RefPtr<nsFrameLoader> fl = mFrameLoader; + return fl.forget(); + } + RefPtr<Element> frameElement(mFrameElement); + RefPtr<nsFrameLoaderOwner> frameLoaderOwner = do_QueryObject(frameElement); + return frameLoaderOwner ? frameLoaderOwner->GetFrameLoader() : nullptr; +} + +void BrowserParent::TryCacheDPIAndScale() { + if (mDPI > 0) { + return; + } + + const auto oldDefaultScale = mDefaultScale; + nsCOMPtr<nsIWidget> widget = GetWidget(); + mDPI = widget ? widget->GetDPI() : nsIWidget::GetFallbackDPI(); + mRounding = widget ? widget->RoundsWidgetCoordinatesTo() : 1; + mDefaultScale = + widget ? widget->GetDefaultScale() : nsIWidget::GetFallbackDefaultScale(); + + if (mDefaultScale != oldDefaultScale) { + // The change of the default scale factor will affect the child dimensions + // so we need to invalidate it. + mUpdatedDimensions = false; + } +} + +void BrowserParent::ApzAwareEventRoutingToChild( + ScrollableLayerGuid* aOutTargetGuid, uint64_t* aOutInputBlockId, + nsEventStatus* aOutApzResponse) { + // Let the widget know that the event will be sent to the child process, + // which will (hopefully) send a confirmation notice back to APZ. + // Do this even if APZ is off since we need it for swipe gesture support on + // OS X without APZ. + InputAPZContext::SetRoutedToChildProcess(); + + if (AsyncPanZoomEnabled()) { + if (aOutTargetGuid) { + *aOutTargetGuid = InputAPZContext::GetTargetLayerGuid(); + + // There may be cases where the APZ hit-testing code came to a different + // conclusion than the main-thread hit-testing code as to where the event + // is destined. In such cases the layersId of the APZ result may not match + // the layersId of this RemoteLayerTreeOwner. In such cases the + // main-thread hit- testing code "wins" so we need to update the guid to + // reflect this. + if (mRemoteLayerTreeOwner.IsInitialized()) { + if (aOutTargetGuid->mLayersId != mRemoteLayerTreeOwner.GetLayersId()) { + *aOutTargetGuid = + ScrollableLayerGuid(mRemoteLayerTreeOwner.GetLayersId(), 0, + ScrollableLayerGuid::NULL_SCROLL_ID); + } + } + } + if (aOutInputBlockId) { + *aOutInputBlockId = InputAPZContext::GetInputBlockId(); + } + if (aOutApzResponse) { + *aOutApzResponse = InputAPZContext::GetApzResponse(); + + // We can get here without there being an InputAPZContext on the stack + // if a non-native event synthesization function (such as + // nsIDOMWindowUtils.sendTouchEvent()) was used in the parent process to + // synthesize an event that's targeting a content process. Such events do + // not go through APZ. Without an InputAPZContext on the stack we pick up + // the default value "eSentinel" which cannot be sent over IPC, so replace + // it with "eIgnore" instead, which what APZ uses when it ignores an + // event. If a caller needs the ability to synthesize a event with a + // different APZ response, a native event synthesization function (such as + // sendNativeTouchPoint()) can be used. + if (*aOutApzResponse == nsEventStatus_eSentinel) { + *aOutApzResponse = nsEventStatus_eIgnore; + } + } + } else { + if (aOutInputBlockId) { + *aOutInputBlockId = 0; + } + if (aOutApzResponse) { + *aOutApzResponse = nsEventStatus_eIgnore; + } + } +} + +mozilla::ipc::IPCResult BrowserParent::RecvRespondStartSwipeEvent( + const uint64_t& aInputBlockId, const bool& aStartSwipe) { + if (nsCOMPtr<nsIWidget> widget = GetWidget()) { + widget->ReportSwipeStarted(aInputBlockId, aStartSwipe); + } + return IPC_OK(); +} + +bool BrowserParent::GetDocShellIsActive() { + return mBrowsingContext && mBrowsingContext->IsActive(); +} + +bool BrowserParent::GetHasPresented() { return mHasPresented; } + +bool BrowserParent::GetHasLayers() { return mHasLayers; } + +bool BrowserParent::GetRenderLayers() { return mRenderLayers; } + +void BrowserParent::SetRenderLayers(bool aEnabled) { + if (aEnabled == mRenderLayers) { + return; + } + + // Preserve layers means that attempts to stop rendering layers + // will be ignored. + if (!aEnabled && mIsPreservingLayers) { + return; + } + + mRenderLayers = aEnabled; + + SetRenderLayersInternal(aEnabled); +} + +void BrowserParent::SetRenderLayersInternal(bool aEnabled) { + Unused << SendRenderLayers(aEnabled); + + // Ask the child to repaint/unload layers using the PHangMonitor + // channel/thread (which may be less congested). + if (aEnabled) { + Manager()->PaintTabWhileInterruptingJS(this); + } else { + Manager()->UnloadLayersWhileInterruptingJS(this); + } +} + +bool BrowserParent::GetPriorityHint() { return mPriorityHint; } + +void BrowserParent::SetPriorityHint(bool aPriorityHint) { + mPriorityHint = aPriorityHint; + RecomputeProcessPriority(); +} + +void BrowserParent::RecomputeProcessPriority() { + auto* bc = GetBrowsingContext(); + ProcessPriorityManager::BrowserPriorityChanged( + bc, bc->IsActive() || mPriorityHint); +} + +void BrowserParent::PreserveLayers(bool aPreserveLayers) { + if (mIsPreservingLayers == aPreserveLayers) { + return; + } + mIsPreservingLayers = aPreserveLayers; + Unused << SendPreserveLayers(aPreserveLayers); +} + +void BrowserParent::NotifyResolutionChanged() { + if (mIsDestroyed) { + return; + } + // TryCacheDPIAndScale()'s cache is keyed off of + // mDPI being greater than 0, so this invalidates it. + mDPI = -1; + TryCacheDPIAndScale(); + // If mDPI was set to -1 to invalidate it and then TryCacheDPIAndScale + // fails to cache the values, then mDefaultScale.scale might be invalid. + // We don't want to send that value to content. Just send -1 for it too in + // that case. + Unused << SendUIResolutionChanged(mDPI, mRounding, + mDPI < 0 ? -1.0 : mDefaultScale.scale); +} + +bool BrowserParent::CanCancelContentJS( + nsIRemoteTab::NavigationType aNavigationType, int32_t aNavigationIndex, + nsIURI* aNavigationURI) const { + // Pre-checking if we can cancel content js in the parent is only + // supported when session history in the parent is enabled. + if (!mozilla::SessionHistoryInParent()) { + // If session history in the parent isn't enabled, this check will + // be fully done in BrowserChild::CanCancelContentJS + return true; + } + + nsCOMPtr<nsISHistory> history = mBrowsingContext->GetSessionHistory(); + + if (!history) { + // If there is no history we can't possibly know if it's ok to + // cancel content js. + return false; + } + + int32_t current; + NS_ENSURE_SUCCESS(history->GetIndex(¤t), false); + + if (current == -1) { + // This tab has no history! Just return. + return false; + } + + nsCOMPtr<nsISHEntry> entry; + NS_ENSURE_SUCCESS(history->GetEntryAtIndex(current, getter_AddRefs(entry)), + false); + + 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 false; + } + + 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 false; + } + + 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 false; + } + + // 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; + NS_ENSURE_SUCCESS(currentURI->EqualsExceptRef(aNavigationURI, &equals), + false); + return !equals; + } + // 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). + NS_ENSURE_SUCCESS(history->GetEntryAtIndex(i, getter_AddRefs(nextEntry)), + false); + + 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; + NS_ENSURE_SUCCESS(thisURI->GetPrePath(thisHost), false); + + nsAutoCString nextHost; + NS_ENSURE_SUCCESS(nextURI->GetPrePath(nextHost), false); + + if (!thisHost.Equals(nextHost)) { + return true; + } + } + + entry = nextEntry; + } + + return false; +} + +void BrowserParent::SuppressDisplayport(bool aEnabled) { + if (IsDestroyed()) { + return; + } + +#ifdef DEBUG + if (aEnabled) { + mActiveSupressDisplayportCount++; + } else { + mActiveSupressDisplayportCount--; + } + MOZ_ASSERT(mActiveSupressDisplayportCount >= 0); +#endif + + Unused << SendSuppressDisplayport(aEnabled); +} + +void BrowserParent::NavigateByKey(bool aForward, bool aForDocumentNavigation) { + Unused << SendNavigateByKey(aForward, aForDocumentNavigation); +} + +void BrowserParent::LayerTreeUpdate(bool aActive) { + if (NS_WARN_IF(mHasLayers == aActive)) { + return; + } + mHasPresented |= aActive; + mHasLayers = aActive; + if (GetBrowserBridgeParent()) { + // Ignore updates if we're an out-of-process iframe. For oop iframes, our + // |mFrameElement| is that of the top-level document, and so + // AsyncTabSwitcher will treat MozLayerTreeReady / MozLayerTreeCleared + // events as if they came from the top-level tab, which is wrong. + return; + } + + if (mIsDestroyed) { + return; + } + + RefPtr<Element> frameElement = mFrameElement; + if (NS_WARN_IF(!frameElement)) { + return; + } + + RefPtr<Event> event = NS_NewDOMEvent(frameElement, nullptr, nullptr); + if (aActive) { + event->InitEvent(u"MozLayerTreeReady"_ns, true, false); + } else { + event->InitEvent(u"MozLayerTreeCleared"_ns, true, false); + } + event->SetTrusted(true); + event->WidgetEventPtr()->mFlags.mOnlyChromeDispatch = true; + frameElement->DispatchEvent(*event); +} + +mozilla::ipc::IPCResult BrowserParent::RecvRemoteIsReadyToHandleInputEvents() { + // When enabling input event prioritization, input events may preempt other + // normal priority IPC messages. To prevent the input events preempt + // PBrowserConstructor, we use an IPC 'RemoteIsReadyToHandleInputEvents' to + // notify the parent that BrowserChild is created and ready to handle input + // events. + SetReadyToHandleInputEvents(); + return IPC_OK(); +} + +PPaymentRequestParent* BrowserParent::AllocPPaymentRequestParent() { + RefPtr<PaymentRequestParent> actor = new PaymentRequestParent(); + return actor.forget().take(); +} + +bool BrowserParent::DeallocPPaymentRequestParent( + PPaymentRequestParent* aActor) { + RefPtr<PaymentRequestParent> actor = + dont_AddRef(static_cast<PaymentRequestParent*>(aActor)); + return true; +} + +nsresult BrowserParent::HandleEvent(Event* aEvent) { + if (mIsDestroyed) { + return NS_OK; + } + + nsAutoString eventType; + aEvent->GetType(eventType); + if (eventType.EqualsLiteral("MozUpdateWindowPos") || + eventType.EqualsLiteral("fullscreenchange")) { + // Events that signify the window moving are used to update the position + // and notify the BrowserChild. + return UpdatePosition(); + } + return NS_OK; +} + +mozilla::ipc::IPCResult BrowserParent::RecvInvokeDragSession( + nsTArray<IPCTransferableData>&& aTransferables, const uint32_t& aAction, + Maybe<BigBuffer>&& aVisualDnDData, const uint32_t& aStride, + const gfx::SurfaceFormat& aFormat, const LayoutDeviceIntRect& aDragRect, + nsIPrincipal* aPrincipal, nsIContentSecurityPolicy* aCsp, + const CookieJarSettingsArgs& aCookieJarSettingsArgs, + const MaybeDiscarded<WindowContext>& aSourceWindowContext, + const MaybeDiscarded<WindowContext>& aSourceTopWindowContext) { + PresShell* presShell = mFrameElement->OwnerDoc()->GetPresShell(); + if (!presShell) { + Unused << Manager()->SendEndDragSession( + true, true, LayoutDeviceIntPoint(), 0, + nsIDragService::DRAGDROP_ACTION_NONE); + // Continue sending input events with input priority when stopping the dnd + // session. + Manager()->SetInputPriorityEventEnabled(true); + return IPC_OK(); + } + + nsCOMPtr<nsICookieJarSettings> cookieJarSettings; + net::CookieJarSettings::Deserialize(aCookieJarSettingsArgs, + getter_AddRefs(cookieJarSettings)); + + RefPtr<RemoteDragStartData> dragStartData = new RemoteDragStartData( + this, std::move(aTransferables), aDragRect, aPrincipal, aCsp, + cookieJarSettings, aSourceWindowContext.GetMaybeDiscarded(), + aSourceTopWindowContext.GetMaybeDiscarded()); + + if (aVisualDnDData) { + const auto checkedSize = CheckedInt<size_t>(aDragRect.height) * aStride; + if (checkedSize.isValid() && + aVisualDnDData->Size() >= checkedSize.value()) { + dragStartData->SetVisualization(gfx::CreateDataSourceSurfaceFromData( + gfx::IntSize(aDragRect.width, aDragRect.height), aFormat, + aVisualDnDData->Data(), aStride)); + } + } + + nsCOMPtr<nsIDragService> dragService = + do_GetService("@mozilla.org/widget/dragservice;1"); + if (dragService) { + dragService->MaybeAddChildProcess(Manager()); + } + + presShell->GetPresContext() + ->EventStateManager() + ->BeginTrackingRemoteDragGesture(mFrameElement, dragStartData); + + return IPC_OK(); +} + +bool BrowserParent::AsyncPanZoomEnabled() const { + nsCOMPtr<nsIWidget> widget = GetWidget(); + return widget && widget->AsyncPanZoomEnabled(); +} + +void BrowserParent::StartPersistence( + CanonicalBrowsingContext* aContext, + nsIWebBrowserPersistDocumentReceiver* aRecv, ErrorResult& aRv) { + RefPtr<WebBrowserPersistDocumentParent> actor = + new WebBrowserPersistDocumentParent(); + actor->SetOnReady(aRecv); + bool ok = Manager()->SendPWebBrowserPersistDocumentConstructor(actor, this, + aContext); + if (!ok) { + aRv.Throw(NS_ERROR_FAILURE); + } + // (The actor will be destroyed on constructor failure.) +} + +mozilla::ipc::IPCResult BrowserParent::RecvLookUpDictionary( + const nsString& aText, nsTArray<FontRange>&& aFontRangeArray, + const bool& aIsVertical, const LayoutDeviceIntPoint& aPoint) { + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (!widget) { + return IPC_OK(); + } + + widget->LookUpDictionary(aText, aFontRangeArray, aIsVertical, + TransformChildToParent(aPoint)); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvShowCanvasPermissionPrompt( + const nsCString& aOrigin, const bool& aHideDoorHanger) { + nsCOMPtr<nsIBrowser> browser = + mFrameElement ? mFrameElement->AsBrowser() : nullptr; + if (!browser) { + // If the tab is being closed, the browser may not be available. + // In this case we can ignore the request. + return IPC_OK(); + } + nsCOMPtr<nsIObserverService> os = services::GetObserverService(); + if (!os) { + return IPC_FAIL_NO_REASON(this); + } + nsresult rv = os->NotifyObservers( + browser, + aHideDoorHanger ? "canvas-permissions-prompt-hide-doorhanger" + : "canvas-permissions-prompt", + NS_ConvertUTF8toUTF16(aOrigin).get()); + if (NS_FAILED(rv)) { + return IPC_FAIL_NO_REASON(this); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvVisitURI( + nsIURI* aURI, nsIURI* aLastVisitedURI, const uint32_t& aFlags, + const uint64_t& aBrowserId) { + if (!aURI) { + return IPC_FAIL_NO_REASON(this); + } + RefPtr<nsIWidget> widget = GetWidget(); + if (NS_WARN_IF(!widget)) { + return IPC_OK(); + } + nsCOMPtr<IHistory> history = components::History::Service(); + if (history) { + Unused << history->VisitURI(widget, aURI, aLastVisitedURI, aFlags, + aBrowserId); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvQueryVisitedState( + nsTArray<RefPtr<nsIURI>>&& aURIs) { +#ifdef MOZ_ANDROID_HISTORY + nsCOMPtr<IHistory> history = components::History::Service(); + if (NS_WARN_IF(!history)) { + return IPC_OK(); + } + RefPtr<nsIWidget> widget = GetWidget(); + if (NS_WARN_IF(!widget)) { + return IPC_OK(); + } + + // FIXME(emilio): Is this check really needed? + for (nsIURI* uri : aURIs) { + if (!uri) { + return IPC_FAIL(this, "Received null URI"); + } + } + + auto* gvHistory = static_cast<GeckoViewHistory*>(history.get()); + gvHistory->QueryVisitedState(widget, mManager, std::move(aURIs)); + return IPC_OK(); +#else + return IPC_FAIL(this, "QueryVisitedState is Android-only"); +#endif +} + +void BrowserParent::LiveResizeStarted() { SuppressDisplayport(true); } + +void BrowserParent::LiveResizeStopped() { SuppressDisplayport(false); } + +void BrowserParent::SetBrowserBridgeParent(BrowserBridgeParent* aBrowser) { + // We should either be clearing out our reference to a browser bridge, or not + // have either a browser bridge, browser host, or owner content yet. + MOZ_ASSERT(!aBrowser || + (!mBrowserBridgeParent && !mBrowserHost && !mFrameElement)); + mBrowserBridgeParent = aBrowser; +} + +void BrowserParent::SetBrowserHost(BrowserHost* aBrowser) { + // We should either be clearing out our reference to a browser host, or not + // have either a browser bridge, browser host, or owner content yet. + MOZ_ASSERT(!aBrowser || + (!mBrowserBridgeParent && !mBrowserHost && !mFrameElement)); + mBrowserHost = aBrowser; +} + +mozilla::ipc::IPCResult BrowserParent::RecvSetSystemFont( + const nsCString& aFontName) { + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->SetSystemFont(aFontName); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvGetSystemFont(nsCString* aFontName) { + nsCOMPtr<nsIWidget> widget = GetWidget(); + if (widget) { + widget->GetSystemFont(*aFontName); + } + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvMaybeFireEmbedderLoadEvents( + EmbedderElementEventType aFireEventAtEmbeddingElement) { + BrowserBridgeParent* bridge = GetBrowserBridgeParent(); + if (!bridge) { + NS_WARNING("Received `load` event on unbridged BrowserParent!"); + return IPC_OK(); + } + + Unused << bridge->SendMaybeFireEmbedderLoadEvents( + aFireEventAtEmbeddingElement); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvScrollRectIntoView( + const nsRect& aRect, const ScrollAxis& aVertical, + const ScrollAxis& aHorizontal, const ScrollFlags& aScrollFlags, + const int32_t& aAppUnitsPerDevPixel) { + BrowserBridgeParent* bridge = GetBrowserBridgeParent(); + if (!bridge || !bridge->CanSend()) { + return IPC_OK(); + } + + Unused << bridge->SendScrollRectIntoView(aRect, aVertical, aHorizontal, + aScrollFlags, aAppUnitsPerDevPixel); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvIsWindowSupportingProtectedMedia( + const uint64_t& aOuterWindowID, + IsWindowSupportingProtectedMediaResolver&& aResolve) { +#ifdef XP_WIN + bool isFxrWindow = + FxRWindowManager::GetInstance()->IsFxRWindow(aOuterWindowID); + aResolve(!isFxrWindow); +#else +# ifdef FUZZING_SNAPSHOT + return IPC_FAIL(this, "Should only be called on Windows"); +# endif + MOZ_CRASH("Should only be called on Windows"); +#endif + + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvIsWindowSupportingWebVR( + const uint64_t& aOuterWindowID, + IsWindowSupportingWebVRResolver&& aResolve) { +#ifdef XP_WIN + bool isFxrWindow = + FxRWindowManager::GetInstance()->IsFxRWindow(aOuterWindowID); + aResolve(!isFxrWindow); +#else + aResolve(true); +#endif + + return IPC_OK(); +} + +static BrowserParent* GetTopLevelBrowserParent(BrowserParent* aBrowserParent) { + MOZ_ASSERT(aBrowserParent); + BrowserParent* parent = aBrowserParent; + while (BrowserBridgeParent* bridge = parent->GetBrowserBridgeParent()) { + parent = bridge->Manager(); + } + return parent; +} + +mozilla::ipc::IPCResult BrowserParent::RecvRequestPointerLock( + RequestPointerLockResolver&& aResolve) { + nsCString error; + if (sTopLevelWebFocus != GetTopLevelBrowserParent(this)) { + error = "PointerLockDeniedNotFocused"; + } else if (!PointerLockManager::SetLockedRemoteTarget(this)) { + error = "PointerLockDeniedInUse"; + } else { + PointerEventHandler::ReleaseAllPointerCaptureRemoteTarget(); + } + aResolve(error); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvReleasePointerLock() { + MOZ_ASSERT_IF(PointerLockManager::GetLockedRemoteTarget(), + PointerLockManager::GetLockedRemoteTarget() == this); + PointerLockManager::ReleaseLockedRemoteTarget(this); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvRequestPointerCapture( + const uint32_t& aPointerId, RequestPointerCaptureResolver&& aResolve) { + aResolve( + PointerEventHandler::SetPointerCaptureRemoteTarget(aPointerId, this)); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvReleasePointerCapture( + const uint32_t& aPointerId) { + PointerEventHandler::ReleasePointerCaptureRemoteTarget(aPointerId); + return IPC_OK(); +} + +mozilla::ipc::IPCResult BrowserParent::RecvShowDynamicToolbar() { +#if defined(MOZ_WIDGET_ANDROID) + nsCOMPtr<nsIWidget> widget = GetTopLevelWidget(); + if (!widget) { + return IPC_OK(); + } + + RefPtr<nsWindow> window = nsWindow::From(widget); + if (!window) { + return IPC_OK(); + } + + window->ShowDynamicToolbar(); +#endif // defined(MOZ_WIDGET_ANDROID) + return IPC_OK(); +} + +} // namespace dom +} // namespace mozilla |