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gecko-dev/dom/ipc/TabChild.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_TabChild_h
#define mozilla_dom_TabChild_h
#include "mozilla/dom/PBrowserChild.h"
#include "nsIWebNavigation.h"
#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "nsIWebBrowserChrome2.h"
#include "nsIEmbeddingSiteWindow.h"
#include "nsIWebBrowserChromeFocus.h"
#include "nsIDOMEventListener.h"
#include "nsIInterfaceRequestor.h"
#include "nsIWindowProvider.h"
#include "nsIDOMWindow.h"
#include "nsIDocShell.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsFrameMessageManager.h"
#include "nsIWebProgressListener.h"
#include "nsIPresShell.h"
#include "nsIScriptObjectPrincipal.h"
#include "nsWeakReference.h"
#include "nsITabChild.h"
#include "nsITooltipListener.h"
#include "mozilla/Attributes.h"
#include "mozilla/dom/TabContext.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/EventDispatcher.h"
#include "mozilla/EventForwards.h"
#include "mozilla/layers/CompositorTypes.h"
#include "nsIWebBrowserChrome3.h"
#include "mozilla/dom/ipc/IdType.h"
#include "PuppetWidget.h"
class nsICachedFileDescriptorListener;
class nsIDOMWindowUtils;
namespace mozilla {
namespace layout {
class RenderFrameChild;
}
namespace layers {
class APZEventState;
struct SetTargetAPZCCallback;
struct SetAllowedTouchBehaviorCallback;
}
namespace widget {
struct AutoCacheNativeKeyCommands;
}
namespace plugins {
class PluginWidgetChild;
}
namespace dom {
class TabChild;
class ClonedMessageData;
class TabChildBase;
class TabChildGlobal : public DOMEventTargetHelper,
public nsIContentFrameMessageManager,
public nsIScriptObjectPrincipal,
public nsIGlobalObject,
public nsSupportsWeakReference
{
public:
explicit TabChildGlobal(TabChildBase* aTabChild);
void Init();
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(TabChildGlobal, DOMEventTargetHelper)
NS_FORWARD_SAFE_NSIMESSAGELISTENERMANAGER(mMessageManager)
NS_FORWARD_SAFE_NSIMESSAGESENDER(mMessageManager)
NS_FORWARD_SAFE_NSIMESSAGEMANAGERGLOBAL(mMessageManager)
NS_IMETHOD SendSyncMessage(const nsAString& aMessageName,
JS::Handle<JS::Value> aObject,
JS::Handle<JS::Value> aRemote,
nsIPrincipal* aPrincipal,
JSContext* aCx,
uint8_t aArgc,
JS::MutableHandle<JS::Value> aRetval) override
{
return mMessageManager
? mMessageManager->SendSyncMessage(aMessageName, aObject, aRemote,
aPrincipal, aCx, aArgc, aRetval)
: NS_ERROR_NULL_POINTER;
}
NS_IMETHOD SendRpcMessage(const nsAString& aMessageName,
JS::Handle<JS::Value> aObject,
JS::Handle<JS::Value> aRemote,
nsIPrincipal* aPrincipal,
JSContext* aCx,
uint8_t aArgc,
JS::MutableHandle<JS::Value> aRetval) override
{
return mMessageManager
? mMessageManager->SendRpcMessage(aMessageName, aObject, aRemote,
aPrincipal, aCx, aArgc, aRetval)
: NS_ERROR_NULL_POINTER;
}
NS_IMETHOD GetContent(nsIDOMWindow** aContent) override;
NS_IMETHOD GetDocShell(nsIDocShell** aDocShell) override;
nsresult AddEventListener(const nsAString& aType,
nsIDOMEventListener* aListener,
bool aUseCapture)
{
// By default add listeners only for trusted events!
return DOMEventTargetHelper::AddEventListener(aType, aListener,
aUseCapture, false, 2);
}
using DOMEventTargetHelper::AddEventListener;
NS_IMETHOD AddEventListener(const nsAString& aType,
nsIDOMEventListener* aListener,
bool aUseCapture, bool aWantsUntrusted,
uint8_t optional_argc) override
{
return DOMEventTargetHelper::AddEventListener(aType, aListener,
aUseCapture,
aWantsUntrusted,
optional_argc);
}
nsresult
PreHandleEvent(EventChainPreVisitor& aVisitor) override
{
aVisitor.mForceContentDispatch = true;
return NS_OK;
}
virtual JSContext* GetJSContextForEventHandlers() override;
virtual nsIPrincipal* GetPrincipal() override;
virtual JSObject* GetGlobalJSObject() override;
virtual JSObject* WrapObject(JSContext* cx, JS::Handle<JSObject*> aGivenProto) override
{
MOZ_CRASH("TabChildGlobal doesn't use DOM bindings!");
}
nsCOMPtr<nsIContentFrameMessageManager> mMessageManager;
nsRefPtr<TabChildBase> mTabChild;
protected:
~TabChildGlobal();
};
class ContentListener final : public nsIDOMEventListener
{
public:
explicit ContentListener(TabChild* aTabChild) : mTabChild(aTabChild) {}
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMEVENTLISTENER
protected:
~ContentListener() {}
TabChild* mTabChild;
};
// This is base clase which helps to share Viewport and touch related functionality
// between b2g/android FF/embedlite clients implementation.
// It make sense to place in this class all helper functions, and functionality which could be shared between
// Cross-process/Cross-thread implmentations.
class TabChildBase : public nsISupports,
public nsMessageManagerScriptExecutor,
public ipc::MessageManagerCallback
{
protected:
typedef mozilla::widget::PuppetWidget PuppetWidget;
public:
TabChildBase();
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(TabChildBase)
virtual nsIWebNavigation* WebNavigation() const = 0;
virtual PuppetWidget* WebWidget() = 0;
nsIPrincipal* GetPrincipal() { return mPrincipal; }
// Recalculates the display state, including the CSS
// viewport. This should be called whenever we believe the
// viewport data on a document may have changed. If it didn't
// change, this function doesn't do anything. However, it should
// not be called all the time as it is fairly expensive.
bool HandlePossibleViewportChange(const ScreenIntSize& aOldScreenSize);
virtual bool DoUpdateZoomConstraints(const uint32_t& aPresShellId,
const mozilla::layers::FrameMetrics::ViewID& aViewId,
const Maybe<mozilla::layers::ZoomConstraints>& aConstraints) = 0;
virtual ScreenIntSize GetInnerSize() = 0;
protected:
virtual ~TabChildBase();
CSSSize GetPageSize(nsCOMPtr<nsIDocument> aDocument, const CSSSize& aViewport);
// Get the DOMWindowUtils for the top-level window in this tab.
already_AddRefed<nsIDOMWindowUtils> GetDOMWindowUtils();
// Get the Document for the top-level window in this tab.
already_AddRefed<nsIDocument> GetDocument() const;
// Get the pres-shell of the document for the top-level window in this tab.
already_AddRefed<nsIPresShell> GetPresShell() const;
// Wrapper for nsIDOMWindowUtils.setCSSViewport(). This updates some state
// variables local to this class before setting it.
void SetCSSViewport(const CSSSize& aSize);
// Wraps up a JSON object as a structured clone and sends it to the browser
// chrome script.
//
// XXX/bug 780335: Do the work the browser chrome script does in C++ instead
// so we don't need things like this.
void DispatchMessageManagerMessage(const nsAString& aMessageName,
const nsAString& aJSONData);
void InitializeRootMetrics();
mozilla::layers::FrameMetrics ProcessUpdateFrame(const mozilla::layers::FrameMetrics& aFrameMetrics);
bool UpdateFrameHandler(const mozilla::layers::FrameMetrics& aFrameMetrics);
protected:
CSSSize mOldViewportSize;
bool mContentDocumentIsDisplayed;
nsRefPtr<TabChildGlobal> mTabChildGlobal;
mozilla::layers::FrameMetrics mLastRootMetrics;
nsCOMPtr<nsIWebBrowserChrome3> mWebBrowserChrome;
};
class TabChild final : public TabChildBase,
public PBrowserChild,
public nsIWebBrowserChrome2,
public nsIEmbeddingSiteWindow,
public nsIWebBrowserChromeFocus,
public nsIInterfaceRequestor,
public nsIWindowProvider,
public nsIDOMEventListener,
public nsIWebProgressListener,
public nsSupportsWeakReference,
public nsITabChild,
public nsIObserver,
public TabContext,
public nsITooltipListener
{
typedef mozilla::dom::ClonedMessageData ClonedMessageData;
typedef mozilla::OwningSerializedStructuredCloneBuffer OwningSerializedStructuredCloneBuffer;
typedef mozilla::layout::RenderFrameChild RenderFrameChild;
typedef mozilla::layers::APZEventState APZEventState;
typedef mozilla::layers::SetTargetAPZCCallback SetTargetAPZCCallback;
typedef mozilla::layers::SetAllowedTouchBehaviorCallback SetAllowedTouchBehaviorCallback;
public:
/**
* Find TabChild of aTabId in the same content process of the
* caller.
*/
static already_AddRefed<TabChild> FindTabChild(const TabId& aTabId);
public:
/**
* This is expected to be called off the critical path to content
* startup. This is an opportunity to load things that are slow
* on the critical path.
*/
static void PreloadSlowThings();
/** Return a TabChild with the given attributes. */
static already_AddRefed<TabChild>
Create(nsIContentChild* aManager, const TabId& aTabId, const TabContext& aContext, uint32_t aChromeFlags);
bool IsRootContentDocument();
// Let managees query if it is safe to send messages.
bool IsDestroyed() { return mDestroyed; }
const TabId GetTabId() const {
MOZ_ASSERT(mUniqueId != 0);
return mUniqueId;
}
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIWEBBROWSERCHROME
NS_DECL_NSIWEBBROWSERCHROME2
NS_DECL_NSIEMBEDDINGSITEWINDOW
NS_DECL_NSIWEBBROWSERCHROMEFOCUS
NS_DECL_NSIINTERFACEREQUESTOR
NS_DECL_NSIWINDOWPROVIDER
NS_DECL_NSIDOMEVENTLISTENER
NS_DECL_NSIWEBPROGRESSLISTENER
NS_DECL_NSITABCHILD
NS_DECL_NSIOBSERVER
NS_DECL_NSITOOLTIPLISTENER
/**
* MessageManagerCallback methods that we override.
*/
virtual bool DoSendBlockingMessage(JSContext* aCx,
const nsAString& aMessage,
const mozilla::dom::StructuredCloneData& aData,
JS::Handle<JSObject *> aCpows,
nsIPrincipal* aPrincipal,
nsTArray<OwningSerializedStructuredCloneBuffer>* aRetVal,
bool aIsSync) override;
virtual bool DoSendAsyncMessage(JSContext* aCx,
const nsAString& aMessage,
const mozilla::dom::StructuredCloneData& aData,
JS::Handle<JSObject *> aCpows,
nsIPrincipal* aPrincipal) override;
virtual bool DoUpdateZoomConstraints(const uint32_t& aPresShellId,
const ViewID& aViewId,
const Maybe<ZoomConstraints>& aConstraints) override;
virtual bool RecvLoadURL(const nsCString& aURI,
const BrowserConfiguration& aConfiguration) override;
virtual bool RecvCacheFileDescriptor(const nsString& aPath,
const FileDescriptor& aFileDescriptor)
override;
virtual bool RecvShow(const ScreenIntSize& aSize,
const ShowInfo& aInfo,
const TextureFactoryIdentifier& aTextureFactoryIdentifier,
const uint64_t& aLayersId,
PRenderFrameChild* aRenderFrame,
const bool& aParentIsActive) override;
virtual bool RecvUpdateDimensions(const CSSRect& rect,
const CSSSize& size,
const ScreenOrientation& orientation,
const LayoutDeviceIntPoint& chromeDisp) override;
virtual bool RecvUpdateFrame(const layers::FrameMetrics& aFrameMetrics) override;
virtual bool RecvRequestFlingSnap(const ViewID& aScrollId,
const CSSPoint& aDestination) override;
virtual bool RecvAcknowledgeScrollUpdate(const ViewID& aScrollId,
const uint32_t& aScrollGeneration) override;
virtual bool RecvHandleDoubleTap(const CSSPoint& aPoint,
const Modifiers& aModifiers,
const mozilla::layers::ScrollableLayerGuid& aGuid) override;
virtual bool RecvHandleSingleTap(const CSSPoint& aPoint,
const Modifiers& aModifiers,
const mozilla::layers::ScrollableLayerGuid& aGuid) override;
virtual bool RecvHandleLongTap(const CSSPoint& aPoint,
const Modifiers& aModifiers,
const mozilla::layers::ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) override;
virtual bool RecvNotifyAPZStateChange(const ViewID& aViewId,
const APZStateChange& aChange,
const int& aArg) override;
virtual bool RecvActivate() override;
virtual bool RecvDeactivate() override;
virtual bool RecvMouseEvent(const nsString& aType,
const float& aX,
const float& aY,
const int32_t& aButton,
const int32_t& aClickCount,
const int32_t& aModifiers,
const bool& aIgnoreRootScrollFrame) override;
virtual bool RecvRealMouseMoveEvent(const mozilla::WidgetMouseEvent& event) override;
virtual bool RecvRealMouseButtonEvent(const mozilla::WidgetMouseEvent& event) override;
virtual bool RecvRealDragEvent(const WidgetDragEvent& aEvent,
const uint32_t& aDragAction,
const uint32_t& aDropEffect) override;
virtual bool RecvRealKeyEvent(const mozilla::WidgetKeyboardEvent& event,
const MaybeNativeKeyBinding& aBindings) override;
virtual bool RecvMouseWheelEvent(const mozilla::WidgetWheelEvent& event,
const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId) override;
virtual bool RecvRealTouchEvent(const WidgetTouchEvent& aEvent,
const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId,
const nsEventStatus& aApzResponse) override;
virtual bool RecvRealTouchMoveEvent(const WidgetTouchEvent& aEvent,
const ScrollableLayerGuid& aGuid,
const uint64_t& aInputBlockId,
const nsEventStatus& aApzResponse) override;
virtual bool RecvKeyEvent(const nsString& aType,
const int32_t& aKeyCode,
const int32_t& aCharCode,
const int32_t& aModifiers,
const bool& aPreventDefault) override;
virtual bool RecvMouseScrollTestEvent(const FrameMetrics::ViewID& aScrollId,
const nsString& aEvent) override;
virtual bool RecvNativeSynthesisResponse(const uint64_t& aObserverId,
const nsCString& aResponse) override;
virtual bool RecvCompositionEvent(const mozilla::WidgetCompositionEvent& event) override;
virtual bool RecvSelectionEvent(const mozilla::WidgetSelectionEvent& event) override;
virtual bool RecvActivateFrameEvent(const nsString& aType, const bool& capture) override;
virtual bool RecvLoadRemoteScript(const nsString& aURL,
const bool& aRunInGlobalScope) override;
virtual bool RecvAsyncMessage(const nsString& aMessage,
const ClonedMessageData& aData,
InfallibleTArray<CpowEntry>&& aCpows,
const IPC::Principal& aPrincipal) override;
virtual bool RecvAppOfflineStatus(const uint32_t& aId, const bool& aOffline) override;
virtual bool RecvSwappedWithOtherRemoteLoader() override;
virtual PDocAccessibleChild* AllocPDocAccessibleChild(PDocAccessibleChild*,
const uint64_t&)
override;
virtual bool DeallocPDocAccessibleChild(PDocAccessibleChild*) override;
virtual PDocumentRendererChild*
AllocPDocumentRendererChild(const nsRect& documentRect, const gfx::Matrix& transform,
const nsString& bgcolor,
const uint32_t& renderFlags, const bool& flushLayout,
const nsIntSize& renderSize) override;
virtual bool DeallocPDocumentRendererChild(PDocumentRendererChild* actor) override;
virtual bool RecvPDocumentRendererConstructor(PDocumentRendererChild* actor,
const nsRect& documentRect,
const gfx::Matrix& transform,
const nsString& bgcolor,
const uint32_t& renderFlags,
const bool& flushLayout,
const nsIntSize& renderSize) override;
virtual PColorPickerChild*
AllocPColorPickerChild(const nsString& title, const nsString& initialColor) override;
virtual bool DeallocPColorPickerChild(PColorPickerChild* actor) override;
virtual PFilePickerChild*
AllocPFilePickerChild(const nsString& aTitle, const int16_t& aMode) override;
virtual bool
DeallocPFilePickerChild(PFilePickerChild* actor) override;
virtual PIndexedDBPermissionRequestChild*
AllocPIndexedDBPermissionRequestChild(const Principal& aPrincipal)
override;
virtual bool
DeallocPIndexedDBPermissionRequestChild(
PIndexedDBPermissionRequestChild* aActor)
override;
virtual nsIWebNavigation* WebNavigation() const override { return mWebNav; }
virtual PuppetWidget* WebWidget() override { return mPuppetWidget; }
/** Return the DPI of the widget this TabChild draws to. */
void GetDPI(float* aDPI);
void GetDefaultScale(double *aScale);
void GetMaxTouchPoints(uint32_t* aTouchPoints);
ScreenOrientation GetOrientation() { return mOrientation; }
void SetBackgroundColor(const nscolor& aColor);
void NotifyPainted();
void RequestNativeKeyBindings(mozilla::widget::AutoCacheNativeKeyCommands* aAutoCache,
WidgetKeyboardEvent* aEvent);
/**
* Signal to this TabChild that it should be made visible:
* activated widget, retained layer tree, etc. (Respectively,
* made not visible.)
*/
void MakeVisible();
void MakeHidden();
// Returns true if the file descriptor was found in the cache, false
// otherwise.
bool GetCachedFileDescriptor(const nsAString& aPath,
nsICachedFileDescriptorListener* aCallback);
void CancelCachedFileDescriptorCallback(
const nsAString& aPath,
nsICachedFileDescriptorListener* aCallback);
nsIContentChild* Manager() { return mManager; }
bool GetUpdateHitRegion() { return mUpdateHitRegion; }
void UpdateHitRegion(const nsRegion& aRegion);
static inline TabChild*
GetFrom(nsIDocShell* aDocShell)
{
nsCOMPtr<nsITabChild> tc = do_GetInterface(aDocShell);
return static_cast<TabChild*>(tc.get());
}
static TabChild* GetFrom(nsIPresShell* aPresShell);
static TabChild* GetFrom(uint64_t aLayersId);
void DidComposite(uint64_t aTransactionId);
void ClearCachedResources();
static inline TabChild*
GetFrom(nsIDOMWindow* aWindow)
{
nsCOMPtr<nsIWebNavigation> webNav = do_GetInterface(aWindow);
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(webNav);
return GetFrom(docShell);
}
virtual bool RecvUIResolutionChanged() override;
virtual bool RecvThemeChanged(nsTArray<LookAndFeelInt>&& aLookAndFeelIntCache) override;
/**
* Native widget remoting protocol for use with windowed plugins with e10s.
*/
PPluginWidgetChild* AllocPPluginWidgetChild() override;
bool DeallocPPluginWidgetChild(PPluginWidgetChild* aActor) override;
nsresult CreatePluginWidget(nsIWidget* aParent, nsIWidget** aOut);
LayoutDeviceIntPoint GetChromeDisplacement() { return mChromeDisp; };
bool IPCOpen() { return mIPCOpen; }
bool ParentIsActive()
{
return mParentIsActive;
}
bool AsyncPanZoomEnabled() { return mAsyncPanZoomEnabled; }
virtual ScreenIntSize GetInnerSize() override;
protected:
virtual ~TabChild();
virtual PRenderFrameChild* AllocPRenderFrameChild() override;
virtual bool DeallocPRenderFrameChild(PRenderFrameChild* aFrame) override;
virtual bool RecvDestroy() override;
virtual bool RecvSetUpdateHitRegion(const bool& aEnabled) override;
virtual bool RecvSetIsDocShellActive(const bool& aIsActive) override;
virtual bool RecvRequestNotifyAfterRemotePaint() override;
virtual bool RecvParentActivated(const bool& aActivated) override;
#ifdef MOZ_WIDGET_GONK
void MaybeRequestPreinitCamera();
#endif
private:
/**
* Create a new TabChild object.
*
* |aOwnOrContainingAppId| is the app-id of our frame or of the closest app
* frame in the hierarchy which contains us.
*
* |aIsBrowserElement| indicates whether we're a browser (but not an app).
*/
TabChild(nsIContentChild* aManager,
const TabId& aTabId,
const TabContext& aContext,
uint32_t aChromeFlags);
nsresult Init();
class DelayedFireContextMenuEvent;
// Notify others that our TabContext has been updated. (At the moment, this
// sets the appropriate app-id and is-browser flags on our docshell.)
//
// You should call this after calling TabContext::SetTabContext(). We also
// call this during Init().
void NotifyTabContextUpdated();
void ActorDestroy(ActorDestroyReason why) override;
enum FrameScriptLoading { DONT_LOAD_SCRIPTS, DEFAULT_LOAD_SCRIPTS };
bool InitTabChildGlobal(FrameScriptLoading aScriptLoading = DEFAULT_LOAD_SCRIPTS);
bool InitRenderingState(const TextureFactoryIdentifier& aTextureFactoryIdentifier,
const uint64_t& aLayersId,
PRenderFrameChild* aRenderFrame);
void DestroyWindow();
void SetProcessNameToAppName();
// Call RecvShow(nsIntSize(0, 0)) and block future calls to RecvShow().
void DoFakeShow(const TextureFactoryIdentifier& aTextureFactoryIdentifier,
const uint64_t& aLayersId,
PRenderFrameChild* aRenderFrame);
void ApplyShowInfo(const ShowInfo& aInfo);
// These methods are used for tracking synthetic mouse events
// dispatched for compatibility. On each touch event, we
// UpdateTapState(). If we've detected that the current gesture
// isn't a tap, then we CancelTapTracking(). In the meantime, we
// may detect a context-menu event, and if so we
// FireContextMenuEvent().
void FireContextMenuEvent();
void CancelTapTracking();
void UpdateTapState(const WidgetTouchEvent& aEvent, nsEventStatus aStatus);
nsresult
ProvideWindowCommon(nsIDOMWindow* aOpener,
bool aIframeMoz,
uint32_t aChromeFlags,
bool aCalledFromJS,
bool aPositionSpecified,
bool aSizeSpecified,
nsIURI* aURI,
const nsAString& aName,
const nsACString& aFeatures,
bool* aWindowIsNew,
nsIDOMWindow** aReturn);
bool HasValidInnerSize();
void SetTabId(const TabId& aTabId);
ScreenIntRect GetOuterRect();
void SetUnscaledInnerSize(const CSSSize& aSize) {
mUnscaledInnerSize = aSize;
}
class CachedFileDescriptorInfo;
class CachedFileDescriptorCallbackRunnable;
class DelayedDeleteRunnable;
TextureFactoryIdentifier mTextureFactoryIdentifier;
nsCOMPtr<nsIWebNavigation> mWebNav;
nsRefPtr<PuppetWidget> mPuppetWidget;
nsCOMPtr<nsIURI> mLastURI;
RenderFrameChild* mRemoteFrame;
nsRefPtr<nsIContentChild> mManager;
uint32_t mChromeFlags;
uint64_t mLayersId;
CSSRect mUnscaledOuterRect;
// When we're tracking a possible tap gesture, this is the "down"
// point of the touchstart.
LayoutDevicePoint mGestureDownPoint;
// The touch identifier of the active gesture.
int32_t mActivePointerId;
// A timer task that fires if the tap-hold timeout is exceeded by
// the touch we're tracking. That is, if touchend or a touchmove
// that exceeds the gesture threshold doesn't happen.
nsCOMPtr<nsITimer> mTapHoldTimer;
// Whether we have already received a FileDescriptor for the app package.
bool mAppPackageFileDescriptorRecved;
// At present only 1 of these is really expected.
nsAutoTArray<nsAutoPtr<CachedFileDescriptorInfo>, 1>
mCachedFileDescriptorInfos;
nscolor mLastBackgroundColor;
bool mDidFakeShow;
bool mNotified;
bool mTriedBrowserInit;
ScreenOrientation mOrientation;
bool mUpdateHitRegion;
bool mIgnoreKeyPressEvent;
nsRefPtr<APZEventState> mAPZEventState;
nsRefPtr<SetAllowedTouchBehaviorCallback> mSetAllowedTouchBehaviorCallback;
bool mHasValidInnerSize;
bool mDestroyed;
// Position of tab, relative to parent widget (typically the window)
LayoutDeviceIntPoint mChromeDisp;
TabId mUniqueId;
float mDPI;
double mDefaultScale;
bool mIPCOpen;
bool mParentIsActive;
bool mAsyncPanZoomEnabled;
CSSSize mUnscaledInnerSize;
DISALLOW_EVIL_CONSTRUCTORS(TabChild);
};
}
}
#endif // mozilla_dom_TabChild_h
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