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gecko-dev/dom/ipc/TabParent.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set sw=4 ts=8 et 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/. */
#ifndef mozilla_tabs_TabParent_h
#define mozilla_tabs_TabParent_h
#include "js/TypeDecls.h"
#include "mozilla/ContentCache.h"
#include "mozilla/dom/ipc/IdType.h"
#include "mozilla/dom/PBrowserParent.h"
#include "mozilla/dom/PFilePickerParent.h"
#include "mozilla/dom/TabContext.h"
#include "mozilla/EventForwards.h"
#include "mozilla/dom/File.h"
#include "mozilla/RefPtr.h"
#include "nsCOMPtr.h"
#include "nsIAuthPromptProvider.h"
#include "nsIBrowserDOMWindow.h"
#include "nsIDOMEventListener.h"
#include "nsISecureBrowserUI.h"
#include "nsITabParent.h"
#include "nsIWebBrowserPersistable.h"
#include "nsIXULBrowserWindow.h"
#include "nsRefreshDriver.h"
#include "nsWeakReference.h"
#include "Units.h"
#include "nsIWidget.h"
class nsFrameLoader;
class nsIFrameLoader;
class nsIContent;
class nsIPrincipal;
class nsIURI;
class nsILoadContext;
class nsIDocShell;
namespace mozilla {
namespace a11y {
class DocAccessibleParent;
}
namespace jsipc {
class CpowHolder;
} // namespace jsipc
namespace layers {
class AsyncDragMetrics;
struct FrameMetrics;
struct TextureFactoryIdentifier;
} // namespace layers
namespace layout {
class RenderFrameParent;
} // namespace layout
namespace widget {
struct IMENotification;
} // namespace widget
namespace gfx {
class SourceSurface;
class DataSourceSurface;
} // namespace gfx
namespace dom {
class ClonedMessageData;
class nsIContentParent;
class Element;
class DataTransfer;
namespace ipc {
class StructuredCloneData;
} // ipc namespace
class TabParent final : public PBrowserParent
, public nsIDOMEventListener
, public nsITabParent
, public nsIAuthPromptProvider
, public nsISecureBrowserUI
, public nsSupportsWeakReference
, public TabContext
, public nsAPostRefreshObserver
, public nsIWebBrowserPersistable
{
typedef mozilla::dom::ClonedMessageData ClonedMessageData;
typedef mozilla::layers::AsyncDragMetrics AsyncDragMetrics;
virtual ~TabParent();
public:
// nsITabParent
NS_DECL_NSITABPARENT
// nsIDOMEventListener interfaces
NS_DECL_NSIDOMEVENTLISTENER
TabParent(nsIContentParent* aManager,
const TabId& aTabId,
const TabContext& aContext,
uint32_t aChromeFlags);
Element* GetOwnerElement() const { return mFrameElement; }
void SetOwnerElement(Element* aElement);
void CacheFrameLoader(nsFrameLoader* aFrameLoader);
/**
* Get the mozapptype attribute from this TabParent's owner DOM element.
*/
void GetAppType(nsAString& aOut);
/**
* Returns true iff this TabParent's nsIFrameLoader is visible.
*
* The frameloader's visibility can be independent of e.g. its docshell's
* visibility.
*/
bool IsVisible();
nsIBrowserDOMWindow *GetBrowserDOMWindow() { return mBrowserDOMWindow; }
void SetBrowserDOMWindow(nsIBrowserDOMWindow* aBrowserDOMWindow) {
mBrowserDOMWindow = aBrowserDOMWindow;
}
already_AddRefed<nsILoadContext> GetLoadContext();
already_AddRefed<nsIWidget> GetTopLevelWidget();
nsIXULBrowserWindow* GetXULBrowserWindow();
void Destroy();
void Detach();
void Attach(nsFrameLoader* aFrameLoader);
void RemoveWindowListeners();
void AddWindowListeners();
void DidRefresh() override;
virtual bool RecvMoveFocus(const bool& aForward,
const bool& aForDocumentNavigation) override;
virtual bool RecvEvent(const RemoteDOMEvent& aEvent) override;
virtual bool RecvReplyKeyEvent(const WidgetKeyboardEvent& aEvent) override;
virtual bool RecvDispatchAfterKeyboardEvent(const WidgetKeyboardEvent& aEvent) override;
virtual bool RecvBrowserFrameOpenWindow(PBrowserParent* aOpener,
const nsString& aURL,
const nsString& aName,
const nsString& aFeatures,
bool* aOutWindowOpened) override;
virtual bool RecvCreateWindow(PBrowserParent* aOpener,
const uint32_t& aChromeFlags,
const bool& aCalledFromJS,
const bool& aPositionSpecified,
const bool& aSizeSpecified,
const nsString& aURI,
const nsString& aName,
const nsCString& aFeatures,
const nsString& aBaseURI,
nsresult* aResult,
bool* aWindowIsNew,
InfallibleTArray<FrameScriptInfo>* aFrameScripts,
nsCString* aURLToLoad) override;
virtual bool RecvSyncMessage(const nsString& aMessage,
const ClonedMessageData& aData,
InfallibleTArray<CpowEntry>&& aCpows,
const IPC::Principal& aPrincipal,
nsTArray<ipc::StructuredCloneData>* aRetVal) override;
virtual bool RecvRpcMessage(const nsString& aMessage,
const ClonedMessageData& aData,
InfallibleTArray<CpowEntry>&& aCpows,
const IPC::Principal& aPrincipal,
nsTArray<ipc::StructuredCloneData>* aRetVal) override;
virtual bool RecvAsyncMessage(const nsString& aMessage,
const ClonedMessageData& aData,
InfallibleTArray<CpowEntry>&& aCpows,
const IPC::Principal& aPrincipal) override;
virtual bool RecvNotifyIMEFocus(const ContentCache& aContentCache,
const widget::IMENotification& aEventMessage,
nsIMEUpdatePreference* aPreference)
override;
virtual bool RecvNotifyIMETextChange(const ContentCache& aContentCache,
const widget::IMENotification& aEventMessage) override;
virtual bool RecvNotifyIMECompositionUpdate(const ContentCache& aContentCache,
const widget::IMENotification& aEventMessage) override;
virtual bool RecvNotifyIMESelection(const ContentCache& aContentCache,
const widget::IMENotification& aEventMessage) override;
virtual bool RecvUpdateContentCache(const ContentCache& aContentCache) override;
virtual bool RecvNotifyIMEMouseButtonEvent(const widget::IMENotification& aEventMessage,
bool* aConsumedByIME) override;
virtual bool RecvNotifyIMEPositionChange(const ContentCache& aContentCache,
const widget::IMENotification& aEventMessage) override;
virtual bool RecvOnEventNeedingAckHandled(const EventMessage& aMessage) override;
virtual bool RecvEndIMEComposition(const bool& aCancel,
bool* aNoCompositionEvent,
nsString* aComposition) override;
virtual bool RecvStartPluginIME(const WidgetKeyboardEvent& aKeyboardEvent,
const int32_t& aPanelX,
const int32_t& aPanelY,
nsString* aCommitted) override;
virtual bool RecvSetPluginFocused(const bool& aFocused) override;
virtual bool RecvGetInputContext(int32_t* aIMEEnabled,
int32_t* aIMEOpen,
intptr_t* aNativeIMEContext) override;
virtual bool RecvSetInputContext(const int32_t& aIMEEnabled,
const int32_t& aIMEOpen,
const nsString& aType,
const nsString& aInputmode,
const nsString& aActionHint,
const int32_t& aCause,
const int32_t& aFocusChange) override;
virtual bool RecvRequestFocus(const bool& aCanRaise) override;
virtual bool RecvEnableDisableCommands(const nsString& aAction,
nsTArray<nsCString>&& aEnabledCommands,
nsTArray<nsCString>&& aDisabledCommands) override;
virtual bool RecvSetCursor(const uint32_t& aValue, const bool& aForce) override;
virtual bool RecvSetCustomCursor(const nsCString& aUri,
const uint32_t& aWidth,
const uint32_t& aHeight,
const uint32_t& aStride,
const uint8_t& aFormat,
const uint32_t& aHotspotX,
const uint32_t& aHotspotY,
const bool& aForce) override;
virtual bool RecvSetStatus(const uint32_t& aType, const nsString& aStatus) override;
virtual bool RecvIsParentWindowMainWidgetVisible(bool* aIsVisible) override;
virtual bool RecvShowTooltip(const uint32_t& aX, const uint32_t& aY, const nsString& aTooltip) override;
virtual bool RecvHideTooltip() override;
virtual bool RecvGetDPI(float* aValue) override;
virtual bool RecvGetDefaultScale(double* aValue) override;
virtual bool RecvGetMaxTouchPoints(uint32_t* aTouchPoints) override;
virtual bool RecvGetWidgetNativeData(WindowsHandle* aValue) override;
virtual bool RecvSetNativeChildOfShareableWindow(const uintptr_t& childWindow) override;
virtual bool RecvDispatchFocusToTopLevelWindow() override;
virtual bool RecvZoomToRect(const uint32_t& aPresShellId,
const ViewID& aViewId,
const CSSRect& aRect) override;
virtual bool RecvUpdateZoomConstraints(const uint32_t& aPresShellId,
const ViewID& aViewId,
const MaybeZoomConstraints& aConstraints) override;
virtual bool RecvRespondStartSwipeEvent(const uint64_t& aInputBlockId,
const bool& aStartSwipe) override;
virtual bool RecvContentReceivedInputBlock(const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId,
const bool& aPreventDefault) override;
virtual bool RecvSetTargetAPZC(const uint64_t& aInputBlockId,
nsTArray<ScrollableLayerGuid>&& aTargets) override;
virtual bool RecvSetAllowedTouchBehavior(const uint64_t& aInputBlockId,
nsTArray<TouchBehaviorFlags>&& aTargets) override;
virtual bool RecvDispatchWheelEvent(const mozilla::WidgetWheelEvent& aEvent) override;
virtual bool RecvDispatchMouseEvent(const mozilla::WidgetMouseEvent& aEvent) override;
virtual bool RecvDispatchKeyboardEvent(const mozilla::WidgetKeyboardEvent& aEvent) override;
virtual bool RecvStartScrollbarDrag(const AsyncDragMetrics& aDragMetrics) override;
virtual PColorPickerParent*
AllocPColorPickerParent(const nsString& aTitle, const nsString& aInitialColor) override;
virtual bool DeallocPColorPickerParent(PColorPickerParent* aColorPicker) override;
virtual PDocAccessibleParent*
AllocPDocAccessibleParent(PDocAccessibleParent*, const uint64_t&) override;
virtual bool DeallocPDocAccessibleParent(PDocAccessibleParent*) override;
virtual bool
RecvPDocAccessibleConstructor(PDocAccessibleParent* aDoc,
PDocAccessibleParent* aParentDoc,
const uint64_t& aParentID) override;
/**
* Return the top level doc accessible parent for this tab.
*/
a11y::DocAccessibleParent* GetTopLevelDocAccessible() const;
void LoadURL(nsIURI* aURI);
// XXX/cjones: it's not clear what we gain by hiding these
// message-sending functions under a layer of indirection and
// eating the return values
void Show(const ScreenIntSize& size, bool aParentIsActive);
void UpdateDimensions(const nsIntRect& rect, const ScreenIntSize& size);
void UpdateFrame(const layers::FrameMetrics& aFrameMetrics);
void UIResolutionChanged();
void ThemeChanged();
void HandleAccessKey(nsTArray<uint32_t>& aCharCodes,
const bool& aIsTrusted,
const int32_t& aModifierMask);
void RequestFlingSnap(const FrameMetrics::ViewID& aScrollId,
const mozilla::CSSPoint& aDestination);
void AcknowledgeScrollUpdate(const ViewID& aScrollId, const uint32_t& aScrollGeneration);
void HandleDoubleTap(const CSSPoint& aPoint,
Modifiers aModifiers,
const ScrollableLayerGuid& aGuid);
void HandleSingleTap(const CSSPoint& aPoint,
Modifiers aModifiers,
const ScrollableLayerGuid& aGuid);
void HandleLongTap(const CSSPoint& aPoint,
Modifiers aModifiers,
const ScrollableLayerGuid& aGuid,
uint64_t aInputBlockId);
void NotifyAPZStateChange(ViewID aViewId,
APZStateChange aChange,
int aArg);
void NotifyMouseScrollTestEvent(const ViewID& aScrollId, const nsString& aEvent);
void NotifyFlushComplete();
void Activate();
void Deactivate();
bool MapEventCoordinatesForChildProcess(mozilla::WidgetEvent* aEvent);
void MapEventCoordinatesForChildProcess(const LayoutDeviceIntPoint& aOffset,
mozilla::WidgetEvent* aEvent);
LayoutDeviceToCSSScale GetLayoutDeviceToCSSScale();
virtual bool RecvRequestNativeKeyBindings(const mozilla::WidgetKeyboardEvent& aEvent,
MaybeNativeKeyBinding* aBindings) override;
virtual bool RecvSynthesizeNativeKeyEvent(const int32_t& aNativeKeyboardLayout,
const int32_t& aNativeKeyCode,
const uint32_t& aModifierFlags,
const nsString& aCharacters,
const nsString& aUnmodifiedCharacters,
const uint64_t& aObserverId) override;
virtual bool RecvSynthesizeNativeMouseEvent(const LayoutDeviceIntPoint& aPoint,
const uint32_t& aNativeMessage,
const uint32_t& aModifierFlags,
const uint64_t& aObserverId) override;
virtual bool RecvSynthesizeNativeMouseMove(const LayoutDeviceIntPoint& aPoint,
const uint64_t& aObserverId) override;
virtual bool 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) override;
virtual bool RecvSynthesizeNativeTouchPoint(const uint32_t& aPointerId,
const TouchPointerState& aPointerState,
const nsIntPoint& aPointerScreenPoint,
const double& aPointerPressure,
const uint32_t& aPointerOrientation,
const uint64_t& aObserverId) override;
virtual bool RecvSynthesizeNativeTouchTap(const nsIntPoint& aPointerScreenPoint,
const bool& aLongTap,
const uint64_t& aObserverId) override;
virtual bool RecvClearNativeTouchSequence(const uint64_t& aObserverId) override;
void SendMouseEvent(const nsAString& aType, float aX, float aY,
int32_t aButton, int32_t aClickCount,
int32_t aModifiers, bool aIgnoreRootScrollFrame);
void SendKeyEvent(const nsAString& aType, int32_t aKeyCode,
int32_t aCharCode, int32_t aModifiers,
bool aPreventDefault);
bool SendRealMouseEvent(mozilla::WidgetMouseEvent& event);
bool SendRealDragEvent(mozilla::WidgetDragEvent& aEvent, uint32_t aDragAction,
uint32_t aDropEffect);
bool SendMouseWheelEvent(mozilla::WidgetWheelEvent& event);
bool SendRealKeyEvent(mozilla::WidgetKeyboardEvent& event);
bool SendRealTouchEvent(WidgetTouchEvent& event);
bool SendHandleSingleTap(const CSSPoint& aPoint, const Modifiers& aModifiers, const ScrollableLayerGuid& aGuid);
bool SendHandleLongTap(const CSSPoint& aPoint, const Modifiers& aModifiers, const ScrollableLayerGuid& aGuid, const uint64_t& aInputBlockId);
bool SendHandleDoubleTap(const CSSPoint& aPoint, const Modifiers& aModifiers, const ScrollableLayerGuid& aGuid);
virtual PDocumentRendererParent*
AllocPDocumentRendererParent(const nsRect& documentRect,
const gfx::Matrix& transform,
const nsString& bgcolor,
const uint32_t& renderFlags,
const bool& flushLayout,
const nsIntSize& renderSize) override;
virtual bool DeallocPDocumentRendererParent(PDocumentRendererParent* actor) override;
virtual PFilePickerParent*
AllocPFilePickerParent(const nsString& aTitle,
const int16_t& aMode) override;
virtual bool DeallocPFilePickerParent(PFilePickerParent* actor) override;
virtual PIndexedDBPermissionRequestParent*
AllocPIndexedDBPermissionRequestParent(const Principal& aPrincipal)
override;
virtual bool
RecvPIndexedDBPermissionRequestConstructor(
PIndexedDBPermissionRequestParent* aActor,
const Principal& aPrincipal)
override;
virtual bool
DeallocPIndexedDBPermissionRequestParent(
PIndexedDBPermissionRequestParent* aActor)
override;
bool GetGlobalJSObject(JSContext* cx, JSObject** globalp);
NS_DECL_ISUPPORTS
NS_DECL_NSIAUTHPROMPTPROVIDER
NS_DECL_NSISECUREBROWSERUI
NS_DECL_NSIWEBBROWSERPERSISTABLE
bool HandleQueryContentEvent(mozilla::WidgetQueryContentEvent& aEvent);
bool SendCompositionEvent(mozilla::WidgetCompositionEvent& event);
bool SendSelectionEvent(mozilla::WidgetSelectionEvent& event);
static TabParent* GetFrom(nsFrameLoader* aFrameLoader);
static TabParent* GetFrom(nsIFrameLoader* aFrameLoader);
static TabParent* GetFrom(nsITabParent* aTabParent);
static TabParent* GetFrom(PBrowserParent* aTabParent);
static TabParent* GetFrom(nsIContent* aContent);
static TabId GetTabIdFrom(nsIDocShell* docshell);
nsIContentParent* Manager() { return mManager; }
/**
* Let managees query if Destroy() is already called so they don't send out
* messages when the PBrowser actor is being destroyed.
*/
bool IsDestroyed() const { return mIsDestroyed; }
already_AddRefed<nsIWidget> GetWidget() const;
const TabId GetTabId() const
{
return mTabId;
}
LayoutDeviceIntPoint GetChildProcessOffset();
/**
* Native widget remoting protocol for use with windowed plugins with e10s.
*/
virtual PPluginWidgetParent* AllocPPluginWidgetParent() override;
virtual bool DeallocPPluginWidgetParent(PPluginWidgetParent* aActor) override;
void SetInitedByParent() { mInitedByParent = true; }
bool IsInitedByParent() const { return mInitedByParent; }
static TabParent* GetNextTabParent();
bool SendLoadRemoteScript(const nsString& aURL,
const bool& aRunInGlobalScope);
// See nsIFrameLoader requestNotifyLayerTreeReady.
bool RequestNotifyLayerTreeReady();
bool RequestNotifyLayerTreeCleared();
bool LayerTreeUpdate(bool aActive);
void SwapLayerTreeObservers(TabParent* aOther);
virtual bool
RecvInvokeDragSession(nsTArray<IPCDataTransfer>&& aTransfers,
const uint32_t& aAction,
const nsCString& aVisualDnDData,
const uint32_t& aWidth, const uint32_t& aHeight,
const uint32_t& aStride, const uint8_t& aFormat,
const int32_t& aDragAreaX, const int32_t& aDragAreaY) override;
void AddInitialDnDDataTo(DataTransfer* aDataTransfer);
void TakeDragVisualization(RefPtr<mozilla::gfx::SourceSurface>& aSurface,
int32_t& aDragAreaX, int32_t& aDragAreaY);
layout::RenderFrameParent* GetRenderFrame();
// Called by HttpChannelParent. The function may use a new process to
// reload the URI associated with the given channel.
void OnStartSignedPackageRequest(nsIChannel* aChannel,
const nsACString& aPackageId);
protected:
bool ReceiveMessage(const nsString& aMessage,
bool aSync,
ipc::StructuredCloneData* aData,
mozilla::jsipc::CpowHolder* aCpows,
nsIPrincipal* aPrincipal,
nsTArray<ipc::StructuredCloneData>* aJSONRetVal = nullptr);
virtual bool RecvAsyncAuthPrompt(const nsCString& aUri,
const nsString& aRealm,
const uint64_t& aCallbackId) override;
virtual bool Recv__delete__() override;
virtual void ActorDestroy(ActorDestroyReason why) override;
Element* mFrameElement;
nsCOMPtr<nsIBrowserDOMWindow> mBrowserDOMWindow;
virtual PRenderFrameParent* AllocPRenderFrameParent() override;
virtual bool DeallocPRenderFrameParent(PRenderFrameParent* aFrame) override;
virtual bool RecvRemotePaintIsReady() override;
virtual bool RecvGetRenderFrameInfo(PRenderFrameParent* aRenderFrame,
TextureFactoryIdentifier* aTextureFactoryIdentifier,
uint64_t* aLayersId) override;
virtual bool RecvSetDimensions(const uint32_t& aFlags,
const int32_t& aX, const int32_t& aY,
const int32_t& aCx, const int32_t& aCy) override;
virtual bool RecvAudioChannelActivityNotification(const uint32_t& aAudioChannel,
const bool& aActive) override;
bool InitBrowserConfiguration(const nsCString& aURI,
BrowserConfiguration& aConfiguration);
void SetHasContentOpener(bool aHasContentOpener);
// Decide whether we have to use a new process to reload the URI associated
// with the given channel.
bool ShouldSwitchProcess(nsIChannel* aChannel);
ContentCacheInParent mContentCache;
nsIntRect mRect;
ScreenIntSize mDimensions;
ScreenOrientationInternal mOrientation;
float mDPI;
CSSToLayoutDeviceScale mDefaultScale;
bool mUpdatedDimensions;
LayoutDeviceIntPoint mChromeOffset;
private:
void DestroyInternal();
already_AddRefed<nsFrameLoader> GetFrameLoader(bool aUseCachedFrameLoaderAfterDestroy = false) const;
RefPtr<nsIContentParent> mManager;
void TryCacheDPIAndScale();
nsresult UpdatePosition();
CSSPoint AdjustTapToChildWidget(const CSSPoint& aPoint);
bool AsyncPanZoomEnabled() const;
// Cached value indicating the docshell active state of the remote browser.
bool mDocShellIsActive;
// Update state prior to routing an APZ-aware event to the child process.
// |aOutTargetGuid| will contain the identifier
// of the APZC instance that handled the event. aOutTargetGuid may be null.
// |aOutInputBlockId| will contain the identifier of the input block
// that this event was added to, if there was one. aOutInputBlockId may be null.
// |aOutApzResponse| will contain the response that the APZ gave when processing
// the input block; this is used for generating appropriate pointercancel events.
void ApzAwareEventRoutingToChild(ScrollableLayerGuid* aOutTargetGuid,
uint64_t* aOutInputBlockId,
nsEventStatus* aOutApzResponse);
// When true, we've initiated normal shutdown and notified our managing PContent.
bool mMarkedDestroying;
// When true, the TabParent is invalid and we should not send IPC messages anymore.
bool mIsDestroyed;
// When true, the TabParent is detached from the frame loader.
bool mIsDetached;
// Whether we have already sent a FileDescriptor for the app package.
bool mAppPackageFileDescriptorSent;
// Whether we need to send the offline status to the TabChild
// This is true, until the first call of LoadURL
bool mSendOfflineStatus;
uint32_t mChromeFlags;
struct DataTransferItem
{
nsCString mFlavor;
nsString mStringData;
RefPtr<mozilla::dom::BlobImpl> mBlobData;
enum DataType
{
eString,
eBlob
};
DataType mType;
};
nsTArray<nsTArray<DataTransferItem>> mInitialDataTransferItems;
RefPtr<gfx::DataSourceSurface> mDnDVisualization;
int32_t mDragAreaX;
int32_t mDragAreaY;
// When true, the TabParent is initialized without child side's request.
// When false, the TabParent is initialized by window.open() from child side.
bool mInitedByParent;
nsCOMPtr<nsILoadContext> mLoadContext;
// We keep a strong reference to the frameloader after we've sent the
// Destroy message and before we've received __delete__. This allows us to
// dispatch message manager messages during this time.
RefPtr<nsFrameLoader> mFrameLoader;
TabId mTabId;
// Helper class for RecvCreateWindow.
struct AutoUseNewTab;
// When loading a new tab or window via window.open, the child process sends
// a new PBrowser to use. We store that tab in sNextTabParent and then
// proceed through the browser's normal paths to create a new
// window/tab. When it comes time to create a new TabParent, we instead use
// sNextTabParent.
static TabParent* sNextTabParent;
// When loading a new tab or window via window.open, the child is
// responsible for loading the URL it wants into the new TabChild. When the
// parent receives the CreateWindow message, though, it sends a LoadURL
// message, usually for about:blank. It's important for the about:blank load
// to get processed because the Firefox frontend expects every new window to
// immediately start loading something (see bug 1123090). However, we want
// the child to process the LoadURL message before it returns from
// ProvideWindow so that the URL sent from the parent doesn't override the
// child's URL. This is not possible using our IPC mechanisms. To solve the
// problem, we skip sending the LoadURL message in the parent and instead
// return the URL as a result from CreateWindow. The child simulates
// receiving a LoadURL message before returning from ProvideWindow.
//
// The mCreatingWindow flag is set while dispatching CreateWindow. During
// that time, any LoadURL calls are skipped and the URL is stored in
// mSkippedURL.
bool mCreatingWindow;
nsCString mDelayedURL;
// When loading a new tab or window via window.open, we want to ensure that
// frame scripts for that tab are loaded before any scripts start to run in
// the window. We can't load the frame scripts the normal way, using
// separate IPC messages, since they won't be processed by the child until
// returning to the event loop, which is too late. Instead, we queue up
// frame scripts that we intend to load and send them as part of the
// CreateWindow response. Then TabChild loads them immediately.
nsTArray<FrameScriptInfo> mDelayedFrameScripts;
// If the user called RequestNotifyLayerTreeReady and the RenderFrameParent
// wasn't ready yet, we set this flag and call RequestNotifyLayerTreeReady
// again once the RenderFrameParent arrives.
bool mNeedLayerTreeReadyNotification;
// Cached cursor setting from TabChild. When the cursor is over the tab,
// it should take this appearance.
nsCursor mCursor;
nsCOMPtr<imgIContainer> mCustomCursor;
uint32_t mCustomCursorHotspotX, mCustomCursorHotspotY;
// True if the cursor changes from the TabChild should change the widget
// cursor. This happens whenever the cursor is in the tab's region.
bool mTabSetsCursor;
RefPtr<nsIPresShell> mPresShellWithRefreshListener;
bool mHasContentOpener;
DebugOnly<int32_t> mActiveSupressDisplayportCount;
private:
// This is used when APZ needs to find the TabParent associated with a layer
// to dispatch events.
typedef nsDataHashtable<nsUint64HashKey, TabParent*> LayerToTabParentTable;
static LayerToTabParentTable* sLayerToTabParentTable;
static void AddTabParentToTable(uint64_t aLayersId, TabParent* aTabParent);
static void RemoveTabParentFromTable(uint64_t aLayersId);
public:
static TabParent* GetTabParentFromLayersId(uint64_t aLayersId);
};
} // namespace dom
} // namespace mozilla
#endif
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