dom/ipc/TabChild.h
author Sebastian Hengst <archaeopteryx@coole-files.de>
Tue, 29 Dec 2015 17:42:02 +0100
changeset 312974 54a19e8d57c42fc139e49d84c880f559ef240f8c
parent 312957 3c2b9372dd36e85c901633bd847b899ebb7e8dec
child 313277 c25b4ada2dd01caeeebe4e4ec20c94196186b0e6
permissions -rw-r--r--
Backed out 15 changesets (bug 1208944) for failing tests M(2,5) on OSX. r=backout Backed out changeset c29de223de2f (bug 1208944) Backed out changeset 3d99da255be1 (bug 1209844) Backed out changeset 3c915942af38 (bug 1209844) Backed out changeset 759b425b5503 (bug 1208944) Backed out changeset bf73cf8f0fda (bug 1208944) Backed out changeset 0e337d912b7d (bug 1208944) Backed out changeset 31c47f2980b5 (bug 1208944) Backed out changeset 3e0d70a6e809 (bug 1208944) Backed out changeset 7685dcb63e5f (bug 1208944) Backed out changeset 3c2b9372dd36 (bug 1208944) Backed out changeset 18160d306493 (bug 1208944) Backed out changeset 4974e397b655 (bug 1208944) Backed out changeset fde7e439844d (bug 1208944) Backed out changeset 4213a355fbdc (bug 1208944) Backed out changeset 33cfddbbf5f2 (bug 1208944)

/* -*- 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 "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 "mozilla/layers/APZCCallbackHelper.h"
#include "nsIWebBrowserChrome3.h"
#include "mozilla/dom/ipc/IdType.h"
#include "AudioChannelService.h"
#include "PuppetWidget.h"

class nsICachedFileDescriptorListener;
class nsIDOMWindowUtils;

namespace mozilla {
namespace layout {
class RenderFrameChild;
} // namespace layout

namespace layers {
class APZEventState;
class ImageCompositeNotification;
} // namespace layers

namespace widget {
struct AutoCacheNativeKeyCommands;
} // namespace widget

namespace plugins {
class PluginWidgetChild;
} // namespace plugins

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;
  RefPtr<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; }
    virtual bool DoUpdateZoomConstraints(const uint32_t& aPresShellId,
                                         const mozilla::layers::FrameMetrics::ViewID& aViewId,
                                         const Maybe<mozilla::layers::ZoomConstraints>& aConstraints) = 0;

    virtual ScreenIntSize GetInnerSize() = 0;

    // Get the Document for the top-level window in this tab.
    already_AddRefed<nsIDocument> GetDocument() const;

protected:
    virtual ~TabChildBase();

    // Get the pres-shell of the document for the top-level window in this tab.
    already_AddRefed<nsIPresShell> GetPresShell() const;

    // 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 ProcessUpdateFrame(const mozilla::layers::FrameMetrics& aFrameMetrics);

    bool UpdateFrameHandler(const mozilla::layers::FrameMetrics& aFrameMetrics);

protected:
    RefPtr<TabChildGlobal> mTabChildGlobal;
    nsCOMPtr<nsIWebBrowserChrome3> mWebBrowserChrome;
};

class TabChild final : public TabChildBase,
                       public PBrowserChild,
                       public nsIWebBrowserChrome2,
                       public nsIEmbeddingSiteWindow,
                       public nsIWebBrowserChromeFocus,
                       public nsIInterfaceRequestor,
                       public nsIWindowProvider,
                       public nsSupportsWeakReference,
                       public nsITabChild,
                       public nsIObserver,
                       public TabContext,
                       public nsITooltipListener
{
    typedef mozilla::dom::ClonedMessageData ClonedMessageData;
    typedef mozilla::layout::RenderFrameChild RenderFrameChild;
    typedef mozilla::layers::APZEventState APZEventState;
    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:
    /**
     * Create a new TabChild object.
     */
    TabChild(nsIContentChild* aManager,
             const TabId& aTabId,
             const TabContext& aContext,
             uint32_t aChromeFlags);

    nsresult Init();

    /**
     * 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_NSITABCHILD
    NS_DECL_NSIOBSERVER
    NS_DECL_NSITOOLTIPLISTENER

    /**
     * MessageManagerCallback methods that we override.
     */
    virtual bool DoSendBlockingMessage(JSContext* aCx,
                                       const nsAString& aMessage,
                                       StructuredCloneData& aData,
                                       JS::Handle<JSObject *> aCpows,
                                       nsIPrincipal* aPrincipal,
                                       nsTArray<StructuredCloneData>* aRetVal,
                                       bool aIsSync) override;
    virtual nsresult DoSendAsyncMessage(JSContext* aCx,
                                        const nsAString& aMessage,
                                        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,
                             const ShowInfo& aInfo) override;
    virtual bool RecvOpenURI(const URIParams& aURI,
                             const uint32_t& aFlags) 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 nsSizeMode& sizeMode,
                                      const ScreenOrientationInternal& 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 RecvNotifyFlushComplete() 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,
                                        const ScrollableLayerGuid& aGuid,
                                        const uint64_t& aInputBlockId) override;
    virtual bool RecvSynthMouseMoveEvent(const mozilla::WidgetMouseEvent& event,
                                         const ScrollableLayerGuid& aGuid,
                                         const uint64_t& aInputBlockId) override;
    virtual bool RecvRealMouseButtonEvent(const mozilla::WidgetMouseEvent& event,
                                          const ScrollableLayerGuid& aGuid,
                                          const uint64_t& aInputBlockId) 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);

    ScreenOrientationInternal GetOrientation() const { 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,
                      const TimeStamp& aCompositeStart,
                      const TimeStamp& aCompositeEnd);
    void DidRequestComposite(const TimeStamp& aCompositeReqStart,
                             const TimeStamp& aCompositeReqEnd);

    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(const float& aDpi, const double& aScale) override;

    virtual bool RecvThemeChanged(nsTArray<LookAndFeelInt>&& aLookAndFeelIntCache) override;

    virtual bool RecvHandleAccessKey(nsTArray<uint32_t>&& aCharCodes,
                                     const bool& aIsTrusted,
                                     const int32_t& aModifierMask) override;

    virtual bool RecvAudioChannelChangeNotification(const uint32_t& aAudioChannel,
                                                    const float& aVolume,
                                                    const bool& aMuted) 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;

    // Call RecvShow(nsIntSize(0, 0)) and block future calls to RecvShow().
    void DoFakeShow(const TextureFactoryIdentifier& aTextureFactoryIdentifier,
                    const uint64_t& aLayersId,
                    PRenderFrameChild* aRenderFrame,
                    const ShowInfo& aShowInfo);

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 RecvSetDocShellIsActive(const bool& aIsActive, const bool& aIsHidden) override;
    virtual bool RecvNavigateByKey(const bool& aForward, const bool& aForDocumentNavigation) override;

    virtual bool RecvRequestNotifyAfterRemotePaint() override;

    virtual bool RecvSuppressDisplayport(const bool& aEnabled) override;

    virtual bool RecvParentActivated(const bool& aActivated) override;

    virtual bool RecvStopIMEStateManagement() override;
    virtual bool RecvMenuKeyboardListenerInstalled(
                   const bool& aInstalled) override;

#ifdef MOZ_WIDGET_GONK
    void MaybeRequestPreinitCamera();
#endif

private:
    // 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();

    void ApplyShowInfo(const ShowInfo& aInfo);

    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;
    RefPtr<PuppetWidget> mPuppetWidget;
    nsCOMPtr<nsIURI> mLastURI;
    RenderFrameChild* mRemoteFrame;
    RefPtr<nsIContentChild> mManager;
    uint32_t mChromeFlags;
    int32_t mActiveSuppressDisplayport;
    uint64_t mLayersId;
    CSSRect mUnscaledOuterRect;
    // 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;
    ScreenOrientationInternal mOrientation;
    bool mUpdateHitRegion;

    bool mIgnoreKeyPressEvent;
    RefPtr<APZEventState> mAPZEventState;
    SetAllowedTouchBehaviorCallback mSetAllowedTouchBehaviorCallback;
    bool mHasValidInnerSize;
    bool mDestroyed;
    // Position of tab, relative to parent widget (typically the window)
    LayoutDeviceIntPoint mChromeDisp;
    TabId mUniqueId;

    friend class ContentChild;
    float mDPI;
    double mDefaultScale;

    bool mIPCOpen;
    bool mParentIsActive;
    bool mAsyncPanZoomEnabled;
    CSSSize mUnscaledInnerSize;
    bool mDidSetRealShowInfo;

    nsAutoTArray<bool, NUMBER_OF_AUDIO_CHANNELS> mAudioChannelsActive;

    DISALLOW_EVIL_CONSTRUCTORS(TabChild);
};

} // namespace dom
} // namespace mozilla

#endif // mozilla_dom_TabChild_h