The Tor Browser: dom/ipc/TabParent.cpp@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 8; -*- */

     2 /* vim: set sw=2 ts=8 et tw=80 : */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #include "base/basictypes.h"

     9 #include "TabParent.h"

    11 #include "AppProcessChecker.h"

    12 #include "IDBFactory.h"

    13 #include "IndexedDBParent.h"

    14 #include "mozIApplication.h"

    15 #include "mozilla/BrowserElementParent.h"

    16 #include "mozilla/docshell/OfflineCacheUpdateParent.h"

    17 #include "mozilla/dom/ContentParent.h"

    18 #include "mozilla/dom/PContentPermissionRequestParent.h"

    19 #include "mozilla/EventStateManager.h"

    20 #include "mozilla/Hal.h"

    21 #include "mozilla/ipc/DocumentRendererParent.h"

    22 #include "mozilla/layers/CompositorParent.h"

    23 #include "mozilla/layout/RenderFrameParent.h"

    24 #include "mozilla/MouseEvents.h"

    25 #include "mozilla/Preferences.h"

    26 #include "mozilla/TextEvents.h"

    27 #include "mozilla/TouchEvents.h"

    28 #include "mozilla/unused.h"

    29 #include "nsCOMPtr.h"

    30 #include "nsContentPermissionHelper.h"

    31 #include "nsContentUtils.h"

    32 #include "nsDebug.h"

    33 #include "nsFocusManager.h"

    34 #include "nsFrameLoader.h"

    35 #include "nsIContent.h"

    36 #include "nsIDocShell.h"

    37 #include "nsIDocShellTreeOwner.h"

    38 #include "nsIDOMElement.h"

    39 #include "nsIDOMEvent.h"

    40 #include "nsIDOMWindow.h"

    41 #include "nsIDOMWindowUtils.h"

    42 #include "nsIInterfaceRequestorUtils.h"

    43 #include "nsIPromptFactory.h"

    44 #include "nsIURI.h"

    45 #include "nsIWebBrowserChrome.h"

    46 #include "nsIXULBrowserWindow.h"

    47 #include "nsIXULWindow.h"

    48 #include "nsViewManager.h"

    49 #include "nsIWidget.h"

    50 #include "nsIWindowWatcher.h"

    51 #include "nsPIDOMWindow.h"

    52 #include "nsPrintfCString.h"

    53 #include "nsServiceManagerUtils.h"

    54 #include "nsThreadUtils.h"

    55 #include "private/pprio.h"

    56 #include "PermissionMessageUtils.h"

    57 #include "StructuredCloneUtils.h"

    58 #include "ColorPickerParent.h"

    59 #include "JavaScriptParent.h"

    60 #include "FilePickerParent.h"

    61 #include "TabChild.h"

    62 #include "LoadContext.h"

    63 #include "nsNetCID.h"

    64 #include <algorithm>

    66 using namespace mozilla::dom;

    67 using namespace mozilla::ipc;

    68 using namespace mozilla::layers;

    69 using namespace mozilla::layout;

    70 using namespace mozilla::services;

    71 using namespace mozilla::widget;

    72 using namespace mozilla::dom::indexedDB;

    73 using namespace mozilla::jsipc;

    75 // The flags passed by the webProgress notifications are 16 bits shifted

    76 // from the ones registered by webProgressListeners.

    77 #define NOTIFY_FLAG_SHIFT 16

    79 class OpenFileAndSendFDRunnable : public nsRunnable

    80 {

    81     const nsString mPath;

    82     nsRefPtr<TabParent> mTabParent;

    83     nsCOMPtr<nsIEventTarget> mEventTarget;

    84     PRFileDesc* mFD;

    86 public:

    87     OpenFileAndSendFDRunnable(const nsAString& aPath, TabParent* aTabParent)

    88       : mPath(aPath), mTabParent(aTabParent), mFD(nullptr)

    89     {

    90         MOZ_ASSERT(NS_IsMainThread());

    91         MOZ_ASSERT(!aPath.IsEmpty());

    92         MOZ_ASSERT(aTabParent);

    93     }

    95     void Dispatch()

    96     {

    97         MOZ_ASSERT(NS_IsMainThread());

    99         mEventTarget = do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);

   100         NS_ENSURE_TRUE_VOID(mEventTarget);

   102         nsresult rv = mEventTarget->Dispatch(this, NS_DISPATCH_NORMAL);

   103         NS_ENSURE_SUCCESS_VOID(rv);

   104     }

   106 private:

   107     ~OpenFileAndSendFDRunnable()

   108     {

   109         MOZ_ASSERT(!mFD);

   110     }

   112     // This shouldn't be called directly except by the event loop. Use Dispatch

   113     // to start the sequence.

   114     NS_IMETHOD Run()

   115     {

   116         if (NS_IsMainThread()) {

   117             SendResponse();

   118         } else if (mFD) {

   119             CloseFile();

   120         } else {

   121             OpenFile();

   122         }

   124         return NS_OK;

   125     }

   127     void SendResponse()

   128     {

   129         MOZ_ASSERT(NS_IsMainThread());

   130         MOZ_ASSERT(mTabParent);

   131         MOZ_ASSERT(mEventTarget);

   132         MOZ_ASSERT(mFD);

   134         nsRefPtr<TabParent> tabParent;

   135         mTabParent.swap(tabParent);

   137         using mozilla::ipc::FileDescriptor;

   139         FileDescriptor::PlatformHandleType handle =

   140             FileDescriptor::PlatformHandleType(PR_FileDesc2NativeHandle(mFD));

   142         mozilla::unused << tabParent->SendCacheFileDescriptor(mPath, handle);

   144         nsCOMPtr<nsIEventTarget> eventTarget;

   145         mEventTarget.swap(eventTarget);

   147         if (NS_FAILED(eventTarget->Dispatch(this, NS_DISPATCH_NORMAL))) {

   148             NS_WARNING("Failed to dispatch to stream transport service!");

   150             // It's probably safer to take the main thread IO hit here rather

   151             // than leak a file descriptor.

   152             CloseFile();

   153         }

   154     }

   156     void OpenFile()

   157     {

   158         MOZ_ASSERT(!NS_IsMainThread());

   159         MOZ_ASSERT(!mFD);

   161         nsCOMPtr<nsIFile> file;

   162         nsresult rv = NS_NewLocalFile(mPath, false, getter_AddRefs(file));

   163         NS_ENSURE_SUCCESS_VOID(rv);

   165         PRFileDesc* fd;

   166         rv = file->OpenNSPRFileDesc(PR_RDONLY, 0, &fd);

   167         NS_ENSURE_SUCCESS_VOID(rv);

   169         mFD = fd;

   171         if (NS_FAILED(NS_DispatchToMainThread(this, NS_DISPATCH_NORMAL))) {

   172             NS_WARNING("Failed to dispatch to main thread!");

   174             CloseFile();

   175         }

   176     }

   178     void CloseFile()

   179     {

   180         // It's possible for this to happen on the main thread if the dispatch

   181         // to the stream service fails after we've already opened the file so

   182         // we can't assert the thread we're running on.

   184         MOZ_ASSERT(mFD);

   186         PRStatus prrc;

   187         prrc = PR_Close(mFD);

   188         if (prrc != PR_SUCCESS) {

   189           NS_ERROR("PR_Close() failed.");

   190         }

   191         mFD = nullptr;

   192     }

   193 };

   195 namespace mozilla {

   196 namespace dom {

   198 TabParent* sEventCapturer;

   200 TabParent *TabParent::mIMETabParent = nullptr;

   202 NS_IMPL_ISUPPORTS(TabParent, nsITabParent, nsIAuthPromptProvider, nsISecureBrowserUI)

   204 TabParent::TabParent(ContentParent* aManager, const TabContext& aContext, uint32_t aChromeFlags)

   205   : TabContext(aContext)

   206   , mFrameElement(nullptr)

   207   , mIMESelectionAnchor(0)

   208   , mIMESelectionFocus(0)

   209   , mIMEComposing(false)

   210   , mIMECompositionEnding(false)

   211   , mIMECompositionStart(0)

   212   , mIMESeqno(0)

   213   , mIMECompositionRectOffset(0)

   214   , mEventCaptureDepth(0)

   215   , mRect(0, 0, 0, 0)

   216   , mDimensions(0, 0)

   217   , mOrientation(0)

   218   , mDPI(0)

   219   , mDefaultScale(0)

   220   , mShown(false)

   221   , mUpdatedDimensions(false)

   222   , mManager(aManager)

   223   , mMarkedDestroying(false)

   224   , mIsDestroyed(false)

   225   , mAppPackageFileDescriptorSent(false)

   226   , mChromeFlags(aChromeFlags)

   227 {

   228 }

   230 TabParent::~TabParent()

   231 {

   232 }

   234 void

   235 TabParent::SetOwnerElement(Element* aElement)

   236 {

   237   mFrameElement = aElement;

   238   TryCacheDPIAndScale();

   239 }

   241 void

   242 TabParent::GetAppType(nsAString& aOut)

   243 {

   244   aOut.Truncate();

   245   nsCOMPtr<Element> elem = do_QueryInterface(mFrameElement);

   246   if (!elem) {

   247     return;

   248   }

   250   elem->GetAttr(kNameSpaceID_None, nsGkAtoms::mozapptype, aOut);

   251 }

   253 bool

   254 TabParent::IsVisible()

   255 {

   256   nsRefPtr<nsFrameLoader> frameLoader = GetFrameLoader();

   257   if (!frameLoader) {

   258     return false;

   259   }

   261   bool visible = false;

   262   frameLoader->GetVisible(&visible);

   263   return visible;

   264 }

   266 void

   267 TabParent::Destroy()

   268 {

   269   if (mIsDestroyed) {

   270     return;

   271   }

   273   // If this fails, it's most likely due to a content-process crash,

   274   // and auto-cleanup will kick in.  Otherwise, the child side will

   275   // destroy itself and send back __delete__().

   276   unused << SendDestroy();

   278   const InfallibleTArray<PIndexedDBParent*>& idbParents =

   279     ManagedPIndexedDBParent();

   280   for (uint32_t i = 0; i < idbParents.Length(); ++i) {

   281     static_cast<IndexedDBParent*>(idbParents[i])->Disconnect();

   282   }

   284   const InfallibleTArray<POfflineCacheUpdateParent*>& ocuParents =

   285     ManagedPOfflineCacheUpdateParent();

   286   for (uint32_t i = 0; i < ocuParents.Length(); ++i) {

   287     nsRefPtr<mozilla::docshell::OfflineCacheUpdateParent> ocuParent =

   288       static_cast<mozilla::docshell::OfflineCacheUpdateParent*>(ocuParents[i]);

   289     ocuParent->StopSendingMessagesToChild();

   290   }

   292   if (RenderFrameParent* frame = GetRenderFrame()) {

   293     frame->Destroy();

   294   }

   295   mIsDestroyed = true;

   297   Manager()->NotifyTabDestroying(this);

   298   mMarkedDestroying = true;

   299 }

   301 bool

   302 TabParent::Recv__delete__()

   303 {

   304   Manager()->NotifyTabDestroyed(this, mMarkedDestroying);

   305   return true;

   306 }

   308 void

   309 TabParent::ActorDestroy(ActorDestroyReason why)

   310 {

   311   if (sEventCapturer == this) {

   312     sEventCapturer = nullptr;

   313   }

   314   if (mIMETabParent == this) {

   315     mIMETabParent = nullptr;

   316   }

   317   nsRefPtr<nsFrameLoader> frameLoader = GetFrameLoader();

   318   nsCOMPtr<nsIObserverService> os = services::GetObserverService();

   319   nsRefPtr<nsFrameMessageManager> fmm;

   320   if (frameLoader) {

   321     fmm = frameLoader->GetFrameMessageManager();

   322     nsCOMPtr<Element> frameElement(mFrameElement);

   323     ReceiveMessage(CHILD_PROCESS_SHUTDOWN_MESSAGE, false, nullptr, nullptr,

   324                    nullptr);

   325     frameLoader->DestroyChild();

   327     if (why == AbnormalShutdown && os) {

   328       os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, frameLoader),

   329                           "oop-frameloader-crashed", nullptr);

   330       nsContentUtils::DispatchTrustedEvent(frameElement->OwnerDoc(), frameElement,

   331                                            NS_LITERAL_STRING("oop-browser-crashed"),

   332                                            true, true);

   333     }

   334   }

   336   if (os) {

   337     os->NotifyObservers(NS_ISUPPORTS_CAST(nsITabParent*, this), "ipc:browser-destroyed", nullptr);

   338   }

   339   if (fmm) {

   340     fmm->Disconnect();

   341   }

   342 }

   344 bool

   345 TabParent::RecvMoveFocus(const bool& aForward)

   346 {

   347   nsCOMPtr<nsIFocusManager> fm = do_GetService(FOCUSMANAGER_CONTRACTID);

   348   if (fm) {

   349     nsCOMPtr<nsIDOMElement> dummy;

   350     uint32_t type = aForward ? uint32_t(nsIFocusManager::MOVEFOCUS_FORWARD)

   351                              : uint32_t(nsIFocusManager::MOVEFOCUS_BACKWARD);

   352     nsCOMPtr<nsIDOMElement> frame = do_QueryInterface(mFrameElement);

   353     fm->MoveFocus(nullptr, frame, type, nsIFocusManager::FLAG_BYKEY,

   354                   getter_AddRefs(dummy));

   355   }

   356   return true;

   357 }

   359 bool

   360 TabParent::RecvEvent(const RemoteDOMEvent& aEvent)

   361 {

   362   nsCOMPtr<nsIDOMEvent> event = do_QueryInterface(aEvent.mEvent);

   363   NS_ENSURE_TRUE(event, true);

   365   nsCOMPtr<mozilla::dom::EventTarget> target = do_QueryInterface(mFrameElement);

   366   NS_ENSURE_TRUE(target, true);

   368   event->SetOwner(target);

   370   bool dummy;

   371   target->DispatchEvent(event, &dummy);

   372   return true;

   373 }

   375 bool

   376 TabParent::AnswerCreateWindow(PBrowserParent** retval)

   377 {

   378     if (!mBrowserDOMWindow) {

   379         return false;

   380     }

   382     // Only non-app, non-browser processes may call CreateWindow.

   383     if (IsBrowserOrApp()) {

   384         return false;

   385     }

   387     // Get a new rendering area from the browserDOMWin.  We don't want

   388     // to be starting any loads here, so get it with a null URI.

   389     nsCOMPtr<nsIFrameLoaderOwner> frameLoaderOwner;

   390     mBrowserDOMWindow->OpenURIInFrame(nullptr, nullptr,

   391                                       nsIBrowserDOMWindow::OPEN_NEWTAB,

   392                                       nsIBrowserDOMWindow::OPEN_NEW,

   393                                       getter_AddRefs(frameLoaderOwner));

   394     if (!frameLoaderOwner) {

   395         return false;

   396     }

   398     nsRefPtr<nsFrameLoader> frameLoader = frameLoaderOwner->GetFrameLoader();

   399     if (!frameLoader) {

   400         return false;

   401     }

   403     *retval = frameLoader->GetRemoteBrowser();

   404     return true;

   405 }

   407 void

   408 TabParent::LoadURL(nsIURI* aURI)

   409 {

   410     MOZ_ASSERT(aURI);

   412     if (mIsDestroyed) {

   413         return;

   414     }

   416     nsCString spec;

   417     aURI->GetSpec(spec);

   419     if (!mShown) {

   420         NS_WARNING(nsPrintfCString("TabParent::LoadURL(%s) called before "

   421                                    "Show(). Ignoring LoadURL.\n",

   422                                    spec.get()).get());

   423         return;

   424     }

   426     unused << SendLoadURL(spec);

   428     // If this app is a packaged app then we can speed startup by sending over

   429     // the file descriptor for the "application.zip" file that it will

   430     // invariably request. Only do this once.

   431     if (!mAppPackageFileDescriptorSent) {

   432         mAppPackageFileDescriptorSent = true;

   434         nsCOMPtr<mozIApplication> app = GetOwnOrContainingApp();

   435         if (app) {

   436             nsString manifestURL;

   437             nsresult rv = app->GetManifestURL(manifestURL);

   438             NS_ENSURE_SUCCESS_VOID(rv);

   440             if (StringBeginsWith(manifestURL, NS_LITERAL_STRING("app:"))) {

   441                 nsString basePath;

   442                 rv = app->GetBasePath(basePath);

   443                 NS_ENSURE_SUCCESS_VOID(rv);

   445                 nsString appId;

   446                 rv = app->GetId(appId);

   447                 NS_ENSURE_SUCCESS_VOID(rv);

   449                 nsCOMPtr<nsIFile> packageFile;

   450                 rv = NS_NewLocalFile(basePath, false,

   451                                      getter_AddRefs(packageFile));

   452                 NS_ENSURE_SUCCESS_VOID(rv);

   454                 rv = packageFile->Append(appId);

   455                 NS_ENSURE_SUCCESS_VOID(rv);

   457                 rv = packageFile->Append(NS_LITERAL_STRING("application.zip"));

   458                 NS_ENSURE_SUCCESS_VOID(rv);

   460                 nsString path;

   461                 rv = packageFile->GetPath(path);

   462                 NS_ENSURE_SUCCESS_VOID(rv);

   464                 nsRefPtr<OpenFileAndSendFDRunnable> openFileRunnable =

   465                     new OpenFileAndSendFDRunnable(path, this);

   466                 openFileRunnable->Dispatch();

   467             }

   468         }

   469     }

   470 }

   472 void

   473 TabParent::Show(const nsIntSize& size)

   474 {

   475     // sigh

   476     mShown = true;

   477     mDimensions = size;

   478     if (!mIsDestroyed) {

   479       unused << SendShow(size);

   480     }

   481 }

   483 void

   484 TabParent::UpdateDimensions(const nsRect& rect, const nsIntSize& size)

   485 {

   486   if (mIsDestroyed) {

   487     return;

   488   }

   489   hal::ScreenConfiguration config;

   490   hal::GetCurrentScreenConfiguration(&config);

   491   ScreenOrientation orientation = config.orientation();

   493   if (!mUpdatedDimensions || mOrientation != orientation ||

   494       mDimensions != size || !mRect.IsEqualEdges(rect)) {

   495     mUpdatedDimensions = true;

   496     mRect = rect;

   497     mDimensions = size;

   498     mOrientation = orientation;

   500     unused << SendUpdateDimensions(mRect, mDimensions, mOrientation);

   501   }

   502 }

   504 void

   505 TabParent::UpdateFrame(const FrameMetrics& aFrameMetrics)

   506 {

   507   if (!mIsDestroyed) {

   508     unused << SendUpdateFrame(aFrameMetrics);

   509   }

   510 }

   512 void

   513 TabParent::AcknowledgeScrollUpdate(const ViewID& aScrollId, const uint32_t& aScrollGeneration)

   514 {

   515   if (!mIsDestroyed) {

   516     unused << SendAcknowledgeScrollUpdate(aScrollId, aScrollGeneration);

   517   }

   518 }

   520 void TabParent::HandleDoubleTap(const CSSPoint& aPoint,

   521                                 int32_t aModifiers,

   522                                 const ScrollableLayerGuid &aGuid)

   523 {

   524   if (!mIsDestroyed) {

   525     unused << SendHandleDoubleTap(aPoint, aGuid);

   526   }

   527 }

   529 void TabParent::HandleSingleTap(const CSSPoint& aPoint,

   530                                 int32_t aModifiers,

   531                                 const ScrollableLayerGuid &aGuid)

   532 {

   533   // TODO Send the modifier data to TabChild for use in mouse events.

   534   if (!mIsDestroyed) {

   535     unused << SendHandleSingleTap(aPoint, aGuid);

   536   }

   537 }

   539 void TabParent::HandleLongTap(const CSSPoint& aPoint,

   540                               int32_t aModifiers,

   541                               const ScrollableLayerGuid &aGuid)

   542 {

   543   if (!mIsDestroyed) {

   544     unused << SendHandleLongTap(aPoint, aGuid);

   545   }

   546 }

   548 void TabParent::HandleLongTapUp(const CSSPoint& aPoint,

   549                                 int32_t aModifiers,

   550                                 const ScrollableLayerGuid &aGuid)

   551 {

   552   if (!mIsDestroyed) {

   553     unused << SendHandleLongTapUp(aPoint, aGuid);

   554   }

   555 }

   557 void TabParent::NotifyAPZStateChange(ViewID aViewId,

   558                                      APZStateChange aChange,

   559                                      int aArg)

   560 {

   561   if (!mIsDestroyed) {

   562     unused << SendNotifyAPZStateChange(aViewId, aChange, aArg);

   563   }

   564 }

   566 void

   567 TabParent::Activate()

   568 {

   569   if (!mIsDestroyed) {

   570     unused << SendActivate();

   571   }

   572 }

   574 void

   575 TabParent::Deactivate()

   576 {

   577   if (!mIsDestroyed) {

   578     unused << SendDeactivate();

   579   }

   580 }

   582 NS_IMETHODIMP

   583 TabParent::Init(nsIDOMWindow *window)

   584 {

   585   return NS_OK;

   586 }

   588 NS_IMETHODIMP

   589 TabParent::GetState(uint32_t *aState)

   590 {

   591   NS_ENSURE_ARG(aState);

   592   NS_WARNING("SecurityState not valid here");

   593   *aState = 0;

   594   return NS_OK;

   595 }

   597 NS_IMETHODIMP

   598 TabParent::SetDocShell(nsIDocShell *aDocShell)

   599 {

   600   NS_ENSURE_ARG(aDocShell);

   601   NS_WARNING("No mDocShell member in TabParent so there is no docShell to set");

   602   return NS_OK;

   603 }

   605 PDocumentRendererParent*

   606 TabParent::AllocPDocumentRendererParent(const nsRect& documentRect,

   607                                         const gfx::Matrix& transform,

   608                                         const nsString& bgcolor,

   609                                         const uint32_t& renderFlags,

   610                                         const bool& flushLayout,

   611                                         const nsIntSize& renderSize)

   612 {

   613     return new DocumentRendererParent();

   614 }

   616 bool

   617 TabParent::DeallocPDocumentRendererParent(PDocumentRendererParent* actor)

   618 {

   619     delete actor;

   620     return true;

   621 }

   623 PContentPermissionRequestParent*

   624 TabParent::AllocPContentPermissionRequestParent(const InfallibleTArray<PermissionRequest>& aRequests,

   625                                                 const IPC::Principal& aPrincipal)

   626 {

   627   return CreateContentPermissionRequestParent(aRequests, mFrameElement, aPrincipal);

   628 }

   630 bool

   631 TabParent::DeallocPContentPermissionRequestParent(PContentPermissionRequestParent* actor)

   632 {

   633   delete actor;

   634   return true;

   635 }

   637 PFilePickerParent*

   638 TabParent::AllocPFilePickerParent(const nsString& aTitle, const int16_t& aMode)

   639 {

   640   return new FilePickerParent(aTitle, aMode);

   641 }

   643 bool

   644 TabParent::DeallocPFilePickerParent(PFilePickerParent* actor)

   645 {

   646   delete actor;

   647   return true;

   648 }

   650 void

   651 TabParent::SendMouseEvent(const nsAString& aType, float aX, float aY,

   652                           int32_t aButton, int32_t aClickCount,

   653                           int32_t aModifiers, bool aIgnoreRootScrollFrame)

   654 {

   655   if (!mIsDestroyed) {

   656     unused << PBrowserParent::SendMouseEvent(nsString(aType), aX, aY,

   657                                              aButton, aClickCount,

   658                                              aModifiers, aIgnoreRootScrollFrame);

   659   }

   660 }

   662 void

   663 TabParent::SendKeyEvent(const nsAString& aType,

   664                         int32_t aKeyCode,

   665                         int32_t aCharCode,

   666                         int32_t aModifiers,

   667                         bool aPreventDefault)

   668 {

   669   if (!mIsDestroyed) {

   670     unused << PBrowserParent::SendKeyEvent(nsString(aType), aKeyCode, aCharCode,

   671                                            aModifiers, aPreventDefault);

   672   }

   673 }

   675 bool

   676 TabParent::MapEventCoordinatesForChildProcess(WidgetEvent* aEvent)

   677 {

   678   nsRefPtr<nsFrameLoader> frameLoader = GetFrameLoader();

   679   if (!frameLoader) {

   680     return false;

   681   }

   682   LayoutDeviceIntPoint offset =

   683     EventStateManager::GetChildProcessOffset(frameLoader, *aEvent);

   684   MapEventCoordinatesForChildProcess(offset, aEvent);

   685   return true;

   686 }

   688 void

   689 TabParent::MapEventCoordinatesForChildProcess(

   690   const LayoutDeviceIntPoint& aOffset, WidgetEvent* aEvent)

   691 {

   692   if (aEvent->eventStructType != NS_TOUCH_EVENT) {

   693     aEvent->refPoint = aOffset;

   694   } else {

   695     aEvent->refPoint = LayoutDeviceIntPoint();

   696     // Then offset all the touch points by that distance, to put them

   697     // in the space where top-left is 0,0.

   698     const nsTArray< nsRefPtr<Touch> >& touches =

   699       aEvent->AsTouchEvent()->touches;

   700     for (uint32_t i = 0; i < touches.Length(); ++i) {

   701       Touch* touch = touches[i];

   702       if (touch) {

   703         touch->mRefPoint += LayoutDeviceIntPoint::ToUntyped(aOffset);

   704       }

   705     }

   706   }

   707 }

   709 bool TabParent::SendRealMouseEvent(WidgetMouseEvent& event)

   710 {

   711   if (mIsDestroyed) {

   712     return false;

   713   }

   714   MaybeForwardEventToRenderFrame(event, nullptr);

   715   if (!MapEventCoordinatesForChildProcess(&event)) {

   716     return false;

   717   }

   718   return PBrowserParent::SendRealMouseEvent(event);

   719 }

   721 CSSPoint TabParent::AdjustTapToChildWidget(const CSSPoint& aPoint)

   722 {

   723   nsCOMPtr<nsIContent> content = do_QueryInterface(mFrameElement);

   725   if (!content || !content->OwnerDoc()) {

   726     return aPoint;

   727   }

   729   nsIDocument* doc = content->OwnerDoc();

   730   if (!doc || !doc->GetShell()) {

   731     return aPoint;

   732   }

   733   nsPresContext* presContext = doc->GetShell()->GetPresContext();

   735   return aPoint + CSSPoint(

   736     presContext->DevPixelsToFloatCSSPixels(mChildProcessOffsetAtTouchStart.x),

   737     presContext->DevPixelsToFloatCSSPixels(mChildProcessOffsetAtTouchStart.y));

   738 }

   740 bool TabParent::SendHandleSingleTap(const CSSPoint& aPoint, const ScrollableLayerGuid& aGuid)

   741 {

   742   if (mIsDestroyed) {

   743     return false;

   744   }

   746   return PBrowserParent::SendHandleSingleTap(AdjustTapToChildWidget(aPoint), aGuid);

   747 }

   749 bool TabParent::SendHandleLongTap(const CSSPoint& aPoint, const ScrollableLayerGuid& aGuid)

   750 {

   751   if (mIsDestroyed) {

   752     return false;

   753   }

   755   return PBrowserParent::SendHandleLongTap(AdjustTapToChildWidget(aPoint), aGuid);

   756 }

   758 bool TabParent::SendHandleLongTapUp(const CSSPoint& aPoint, const ScrollableLayerGuid& aGuid)

   759 {

   760   if (mIsDestroyed) {

   761     return false;

   762   }

   764   return PBrowserParent::SendHandleLongTapUp(AdjustTapToChildWidget(aPoint), aGuid);

   765 }

   767 bool TabParent::SendHandleDoubleTap(const CSSPoint& aPoint, const ScrollableLayerGuid& aGuid)

   768 {

   769   if (mIsDestroyed) {

   770     return false;

   771   }

   773   return PBrowserParent::SendHandleDoubleTap(AdjustTapToChildWidget(aPoint), aGuid);

   774 }

   776 bool TabParent::SendMouseWheelEvent(WidgetWheelEvent& event)

   777 {

   778   if (mIsDestroyed) {

   779     return false;

   780   }

   781   MaybeForwardEventToRenderFrame(event, nullptr);

   782   if (!MapEventCoordinatesForChildProcess(&event)) {

   783     return false;

   784   }

   785   return PBrowserParent::SendMouseWheelEvent(event);

   786 }

   788 static void

   789 DoCommandCallback(mozilla::Command aCommand, void* aData)

   790 {

   791   static_cast<InfallibleTArray<mozilla::CommandInt>*>(aData)->AppendElement(aCommand);

   792 }

   794 bool

   795 TabParent::RecvRequestNativeKeyBindings(const WidgetKeyboardEvent& aEvent,

   796                                         MaybeNativeKeyBinding* aBindings)

   797 {

   798   AutoInfallibleTArray<mozilla::CommandInt, 4> singleLine;

   799   AutoInfallibleTArray<mozilla::CommandInt, 4> multiLine;

   800   AutoInfallibleTArray<mozilla::CommandInt, 4> richText;

   802   *aBindings = mozilla::void_t();

   804   nsCOMPtr<nsIWidget> widget = GetWidget();

   805   if (!widget) {

   806     return true;

   807   }

   809   WidgetKeyboardEvent localEvent(aEvent);

   811   if (NS_FAILED(widget->AttachNativeKeyEvent(localEvent))) {

   812     return true;

   813   }

   815   widget->ExecuteNativeKeyBinding(nsIWidget::NativeKeyBindingsForSingleLineEditor,

   816                                   localEvent, DoCommandCallback, &singleLine);

   817   widget->ExecuteNativeKeyBinding(nsIWidget::NativeKeyBindingsForMultiLineEditor,

   818                                   localEvent, DoCommandCallback, &multiLine);

   819   widget->ExecuteNativeKeyBinding(nsIWidget::NativeKeyBindingsForRichTextEditor,

   820                                   localEvent, DoCommandCallback, &richText);

   822   if (!singleLine.IsEmpty() || !multiLine.IsEmpty() || !richText.IsEmpty()) {

   823     *aBindings = NativeKeyBinding(singleLine, multiLine, richText);

   824   }

   826   return true;

   827 }

   829 bool TabParent::SendRealKeyEvent(WidgetKeyboardEvent& event)

   830 {

   831   if (mIsDestroyed) {

   832     return false;

   833   }

   834   MaybeForwardEventToRenderFrame(event, nullptr);

   835   if (!MapEventCoordinatesForChildProcess(&event)) {

   836     return false;

   837   }

   840   MaybeNativeKeyBinding bindings;

   841   bindings = void_t();

   842   if (event.message == NS_KEY_PRESS) {

   843     nsCOMPtr<nsIWidget> widget = GetWidget();

   845     AutoInfallibleTArray<mozilla::CommandInt, 4> singleLine;

   846     AutoInfallibleTArray<mozilla::CommandInt, 4> multiLine;

   847     AutoInfallibleTArray<mozilla::CommandInt, 4> richText;

   849     widget->ExecuteNativeKeyBinding(nsIWidget::NativeKeyBindingsForSingleLineEditor,

   850                                     event, DoCommandCallback, &singleLine);

   851     widget->ExecuteNativeKeyBinding(nsIWidget::NativeKeyBindingsForMultiLineEditor,

   852                                     event, DoCommandCallback, &multiLine);

   853     widget->ExecuteNativeKeyBinding(nsIWidget::NativeKeyBindingsForRichTextEditor,

   854                                     event, DoCommandCallback, &richText);

   856     if (!singleLine.IsEmpty() || !multiLine.IsEmpty() || !richText.IsEmpty()) {

   857       bindings = NativeKeyBinding(singleLine, multiLine, richText);

   858     }

   859   }

   861   return PBrowserParent::SendRealKeyEvent(event, bindings);

   862 }

   864 bool TabParent::SendRealTouchEvent(WidgetTouchEvent& event)

   865 {

   866   if (mIsDestroyed) {

   867     return false;

   868   }

   869   if (event.message == NS_TOUCH_START) {

   870     // Adjust the widget coordinates to be relative to our frame.

   871     nsRefPtr<nsFrameLoader> frameLoader = GetFrameLoader();

   872     if (!frameLoader) {

   873       // No frame anymore?

   874       sEventCapturer = nullptr;

   875       return false;

   876     }

   878     mChildProcessOffsetAtTouchStart =

   879       EventStateManager::GetChildProcessOffset(frameLoader, event);

   881     MOZ_ASSERT((!sEventCapturer && mEventCaptureDepth == 0) ||

   882                (sEventCapturer == this && mEventCaptureDepth > 0));

   883     // We want to capture all remaining touch events in this series

   884     // for fast-path dispatch.

   885     sEventCapturer = this;

   886     ++mEventCaptureDepth;

   887   }

   889   // PresShell::HandleEventInternal adds touches on touch end/cancel.  This

   890   // confuses remote content and the panning and zooming logic into thinking

   891   // that the added touches are part of the touchend/cancel, when actually

   892   // they're not.

   893   if (event.message == NS_TOUCH_END || event.message == NS_TOUCH_CANCEL) {

   894     for (int i = event.touches.Length() - 1; i >= 0; i--) {

   895       if (!event.touches[i]->mChanged) {

   896         event.touches.RemoveElementAt(i);

   897       }

   898     }

   899   }

   901   ScrollableLayerGuid guid;

   902   MaybeForwardEventToRenderFrame(event, &guid);

   904   if (mIsDestroyed) {

   905     return false;

   906   }

   908   MapEventCoordinatesForChildProcess(mChildProcessOffsetAtTouchStart, &event);

   910   return (event.message == NS_TOUCH_MOVE) ?

   911     PBrowserParent::SendRealTouchMoveEvent(event, guid) :

   912     PBrowserParent::SendRealTouchEvent(event, guid);

   913 }

   915 /*static*/ TabParent*

   916 TabParent::GetEventCapturer()

   917 {

   918   return sEventCapturer;

   919 }

   921 bool

   922 TabParent::TryCapture(const WidgetGUIEvent& aEvent)

   923 {

   924   MOZ_ASSERT(sEventCapturer == this && mEventCaptureDepth > 0);

   926   if (aEvent.eventStructType != NS_TOUCH_EVENT) {

   927     // Only capture of touch events is implemented, for now.

   928     return false;

   929   }

   931   WidgetTouchEvent event(*aEvent.AsTouchEvent());

   933   bool isTouchPointUp = (event.message == NS_TOUCH_END ||

   934                          event.message == NS_TOUCH_CANCEL);

   935   if (event.message == NS_TOUCH_START || isTouchPointUp) {

   936     // Let the DOM see touch start/end events so that its touch-point

   937     // state stays consistent.

   938     if (isTouchPointUp && 0 == --mEventCaptureDepth) {

   939       // All event series are un-captured, don't try to catch any

   940       // more.

   941       sEventCapturer = nullptr;

   942     }

   943     return false;

   944   }

   946   SendRealTouchEvent(event);

   947   return true;

   948 }

   950 bool

   951 TabParent::RecvSyncMessage(const nsString& aMessage,

   952                            const ClonedMessageData& aData,

   953                            const InfallibleTArray<CpowEntry>& aCpows,

   954                            const IPC::Principal& aPrincipal,

   955                            InfallibleTArray<nsString>* aJSONRetVal)

   956 {

   957   nsIPrincipal* principal = aPrincipal;

   958   ContentParent* parent = static_cast<ContentParent*>(Manager());

   959   if (!Preferences::GetBool("dom.testing.ignore_ipc_principal", false) &&

   960       principal && !AssertAppPrincipal(parent, principal)) {

   961     return false;

   962   }

   964   StructuredCloneData cloneData = ipc::UnpackClonedMessageDataForParent(aData);

   965   CpowIdHolder cpows(parent->GetCPOWManager(), aCpows);

   966   return ReceiveMessage(aMessage, true, &cloneData, &cpows, aPrincipal, aJSONRetVal);

   967 }

   969 bool

   970 TabParent::AnswerRpcMessage(const nsString& aMessage,

   971                             const ClonedMessageData& aData,

   972                             const InfallibleTArray<CpowEntry>& aCpows,

   973                             const IPC::Principal& aPrincipal,

   974                             InfallibleTArray<nsString>* aJSONRetVal)

   975 {

   976   nsIPrincipal* principal = aPrincipal;

   977   ContentParent* parent = static_cast<ContentParent*>(Manager());

   978   if (!Preferences::GetBool("dom.testing.ignore_ipc_principal", false) &&

   979       principal && !AssertAppPrincipal(parent, principal)) {

   980     return false;

   981   }

   983   StructuredCloneData cloneData = ipc::UnpackClonedMessageDataForParent(aData);

   984   CpowIdHolder cpows(parent->GetCPOWManager(), aCpows);

   985   return ReceiveMessage(aMessage, true, &cloneData, &cpows, aPrincipal, aJSONRetVal);

   986 }

   988 bool

   989 TabParent::RecvAsyncMessage(const nsString& aMessage,

   990                             const ClonedMessageData& aData,

   991                             const InfallibleTArray<CpowEntry>& aCpows,

   992                             const IPC::Principal& aPrincipal)

   993 {

   994   nsIPrincipal* principal = aPrincipal;

   995   ContentParent* parent = static_cast<ContentParent*>(Manager());

   996   if (!Preferences::GetBool("dom.testing.ignore_ipc_principal", false) &&

   997       principal && !AssertAppPrincipal(parent, principal)) {

   998     return false;

   999   }

  1001   StructuredCloneData cloneData = ipc::UnpackClonedMessageDataForParent(aData);

  1002   CpowIdHolder cpows(parent->GetCPOWManager(), aCpows);

  1003   return ReceiveMessage(aMessage, false, &cloneData, &cpows, aPrincipal, nullptr);

  1004 }

  1006 bool

  1007 TabParent::RecvSetCursor(const uint32_t& aCursor)

  1008 {

  1009   nsCOMPtr<nsIWidget> widget = GetWidget();

  1010   if (widget) {

  1011     widget->SetCursor((nsCursor) aCursor);

  1012   }

  1013   return true;

  1014 }

  1016 bool

  1017 TabParent::RecvSetBackgroundColor(const nscolor& aColor)

  1018 {

  1019   if (RenderFrameParent* frame = GetRenderFrame()) {

  1020     frame->SetBackgroundColor(aColor);

  1021   }

  1022   return true;

  1023 }

  1025 nsIXULBrowserWindow*

  1026 TabParent::GetXULBrowserWindow()

  1027 {

  1028   nsCOMPtr<nsIContent> frame = do_QueryInterface(mFrameElement);

  1029   if (!frame) {

  1030     return nullptr;

  1031   }

  1033   nsCOMPtr<nsIDocShell> docShell = frame->OwnerDoc()->GetDocShell();

  1034   if (!docShell) {

  1035     return nullptr;

  1036   }

  1038   nsCOMPtr<nsIDocShellTreeOwner> treeOwner;

  1039   docShell->GetTreeOwner(getter_AddRefs(treeOwner));

  1040   if (!treeOwner) {

  1041     return nullptr;

  1042   }

  1044   nsCOMPtr<nsIXULWindow> window = do_GetInterface(treeOwner);

  1045   if (!window) {

  1046     return nullptr;

  1047   }

  1049   nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow;

  1050   window->GetXULBrowserWindow(getter_AddRefs(xulBrowserWindow));

  1051   return xulBrowserWindow;

  1052 }

  1054 bool

  1055 TabParent::RecvSetStatus(const uint32_t& aType, const nsString& aStatus)

  1056 {

  1057   nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow = GetXULBrowserWindow();

  1058   if (!xulBrowserWindow) {

  1059     return true;

  1060   }

  1062   switch (aType) {

  1063    case nsIWebBrowserChrome::STATUS_SCRIPT:

  1064     xulBrowserWindow->SetJSStatus(aStatus);

  1065     break;

  1066    case nsIWebBrowserChrome::STATUS_LINK:

  1067     xulBrowserWindow->SetOverLink(aStatus, nullptr);

  1068     break;

  1069   }

  1070   return true;

  1071 }

  1073 bool

  1074 TabParent::RecvShowTooltip(const uint32_t& aX, const uint32_t& aY, const nsString& aTooltip)

  1075 {

  1076   nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow = GetXULBrowserWindow();

  1077   if (!xulBrowserWindow) {

  1078     return true;

  1079   }

  1081   xulBrowserWindow->ShowTooltip(aX, aY, aTooltip);

  1082   return true;

  1083 }

  1085 bool

  1086 TabParent::RecvHideTooltip()

  1087 {

  1088   nsCOMPtr<nsIXULBrowserWindow> xulBrowserWindow = GetXULBrowserWindow();

  1089   if (!xulBrowserWindow) {

  1090     return true;

  1091   }

  1093   xulBrowserWindow->HideTooltip();

  1094   return true;

  1095 }

  1097 bool

  1098 TabParent::RecvNotifyIMEFocus(const bool& aFocus,

  1099                               nsIMEUpdatePreference* aPreference,

  1100                               uint32_t* aSeqno)

  1101 {

  1102   nsCOMPtr<nsIWidget> widget = GetWidget();

  1103   if (!widget) {

  1104     *aPreference = nsIMEUpdatePreference();

  1105     return true;

  1106   }

  1108   *aSeqno = mIMESeqno;

  1109   mIMETabParent = aFocus ? this : nullptr;

  1110   mIMESelectionAnchor = 0;

  1111   mIMESelectionFocus = 0;

  1112   widget->NotifyIME(IMENotification(aFocus ? NOTIFY_IME_OF_FOCUS :

  1113                                              NOTIFY_IME_OF_BLUR));

  1115   if (aFocus) {

  1116     *aPreference = widget->GetIMEUpdatePreference();

  1117   } else {

  1118     mIMECacheText.Truncate(0);

  1119   }

  1120   return true;

  1121 }

  1123 bool

  1124 TabParent::RecvNotifyIMETextChange(const uint32_t& aStart,

  1125                                    const uint32_t& aEnd,

  1126                                    const uint32_t& aNewEnd,

  1127                                    const bool& aCausedByComposition)

  1128 {

  1129   nsCOMPtr<nsIWidget> widget = GetWidget();

  1130   if (!widget)

  1131     return true;

  1133 #ifdef DEBUG

  1134   nsIMEUpdatePreference updatePreference = widget->GetIMEUpdatePreference();

  1135   NS_ASSERTION(updatePreference.WantTextChange(),

  1136                "Don't call Send/RecvNotifyIMETextChange without NOTIFY_TEXT_CHANGE");

  1137   MOZ_ASSERT(!aCausedByComposition ||

  1138                updatePreference.WantChangesCausedByComposition(),

  1139     "The widget doesn't want text change notification caused by composition");

  1140 #endif

  1142   IMENotification notification(NOTIFY_IME_OF_TEXT_CHANGE);

  1143   notification.mTextChangeData.mStartOffset = aStart;

  1144   notification.mTextChangeData.mOldEndOffset = aEnd;

  1145   notification.mTextChangeData.mNewEndOffset = aNewEnd;

  1146   notification.mTextChangeData.mCausedByComposition = aCausedByComposition;

  1147   widget->NotifyIME(notification);

  1148   return true;

  1149 }

  1151 bool

  1152 TabParent::RecvNotifyIMESelectedCompositionRect(const uint32_t& aOffset,

  1153                                                 const nsIntRect& aRect,

  1154                                                 const nsIntRect& aCaretRect)

  1155 {

  1156   // add rect to cache for another query

  1157   mIMECompositionRectOffset = aOffset;

  1158   mIMECompositionRect = aRect;

  1159   mIMECaretRect = aCaretRect;

  1161   nsCOMPtr<nsIWidget> widget = GetWidget();

  1162   if (!widget) {

  1163     return true;

  1164   }

  1165   widget->NotifyIME(IMENotification(NOTIFY_IME_OF_COMPOSITION_UPDATE));

  1166   return true;

  1167 }

  1169 bool

  1170 TabParent::RecvNotifyIMESelection(const uint32_t& aSeqno,

  1171                                   const uint32_t& aAnchor,

  1172                                   const uint32_t& aFocus,

  1173                                   const bool& aCausedByComposition)

  1174 {

  1175   nsCOMPtr<nsIWidget> widget = GetWidget();

  1176   if (!widget)

  1177     return true;

  1179   if (aSeqno == mIMESeqno) {

  1180     mIMESelectionAnchor = aAnchor;

  1181     mIMESelectionFocus = aFocus;

  1182     const nsIMEUpdatePreference updatePreference =

  1183       widget->GetIMEUpdatePreference();

  1184     if (updatePreference.WantSelectionChange() &&

  1185         (updatePreference.WantChangesCausedByComposition() ||

  1186          !aCausedByComposition)) {

  1187       IMENotification notification(NOTIFY_IME_OF_SELECTION_CHANGE);

  1188       notification.mSelectionChangeData.mCausedByComposition =

  1189         aCausedByComposition;

  1190       widget->NotifyIME(notification);

  1191     }

  1192   }

  1193   return true;

  1194 }

  1196 bool

  1197 TabParent::RecvNotifyIMETextHint(const nsString& aText)

  1198 {

  1199   // Replace our cache with new text

  1200   mIMECacheText = aText;

  1201   return true;

  1202 }

  1204 bool

  1205 TabParent::RecvRequestFocus(const bool& aCanRaise)

  1206 {

  1207   nsCOMPtr<nsIFocusManager> fm = nsFocusManager::GetFocusManager();

  1208   if (!fm) {

  1209     return true;

  1210   }

  1212   nsCOMPtr<nsIContent> content = do_QueryInterface(mFrameElement);

  1213   if (!content || !content->OwnerDoc()) {

  1214     return true;

  1215   }

  1217   uint32_t flags = nsIFocusManager::FLAG_NOSCROLL;

  1218   if (aCanRaise)

  1219     flags |= nsIFocusManager::FLAG_RAISE;

  1221   nsCOMPtr<nsIDOMElement> node = do_QueryInterface(mFrameElement);

  1222   fm->SetFocus(node, flags);

  1223   return true;

  1224 }

  1226 nsIntPoint

  1227 TabParent::GetChildProcessOffset()

  1228 {

  1229   // The "toplevel widget" in child processes is always at position

  1230   // 0,0.  Map the event coordinates to match that.

  1232   nsIntPoint offset(0, 0);

  1233   nsRefPtr<nsFrameLoader> frameLoader = GetFrameLoader();

  1234   if (!frameLoader) {

  1235     return offset;

  1236   }

  1237   nsIFrame* targetFrame = frameLoader->GetPrimaryFrameOfOwningContent();

  1238   if (!targetFrame) {

  1239     return offset;

  1240   }

  1242   // Find out how far we're offset from the nearest widget.

  1243   nsCOMPtr<nsIWidget> widget = GetWidget();

  1244   if (!widget) {

  1245     return offset;

  1246   }

  1247   nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(widget,

  1248                                                             nsIntPoint(0, 0),

  1249                                                             targetFrame);

  1251   return LayoutDeviceIntPoint::ToUntyped(LayoutDeviceIntPoint::FromAppUnitsToNearest(

  1252            pt, targetFrame->PresContext()->AppUnitsPerDevPixel()));

  1253 }

  1255 bool

  1256 TabParent::RecvReplyKeyEvent(const WidgetKeyboardEvent& event)

  1257 {

  1258   NS_ENSURE_TRUE(mFrameElement, true);

  1260   WidgetKeyboardEvent localEvent(event);

  1261   // Set mNoCrossProcessBoundaryForwarding to avoid this event from

  1262   // being infinitely redispatched and forwarded to the child again.

  1263   localEvent.mFlags.mNoCrossProcessBoundaryForwarding = true;

  1265   // Here we convert the WidgetEvent that we received to an nsIDOMEvent

  1266   // to be able to dispatch it to the <browser> element as the target element.

  1267   nsIDocument* doc = mFrameElement->OwnerDoc();

  1268   nsIPresShell* presShell = doc->GetShell();

  1269   NS_ENSURE_TRUE(presShell, true);

  1270   nsPresContext* presContext = presShell->GetPresContext();

  1271   NS_ENSURE_TRUE(presContext, true);

  1273   EventDispatcher::Dispatch(mFrameElement, presContext, &localEvent);

  1274   return true;

  1275 }

  1277 /**

  1278  * Try to answer query event using cached text.

  1279  *

  1280  * For NS_QUERY_SELECTED_TEXT, fail if the cache doesn't contain the whole

  1281  *  selected range. (This shouldn't happen because PuppetWidget should have

  1282  *  already sent the whole selection.)

  1283  *

  1284  * For NS_QUERY_TEXT_CONTENT, fail only if the cache doesn't overlap with

  1285  *  the queried range. Note the difference from above. We use

  1286  *  this behavior because a normal NS_QUERY_TEXT_CONTENT event is allowed to

  1287  *  have out-of-bounds offsets, so that widget can request content without

  1288  *  knowing the exact length of text. It's up to widget to handle cases when

  1289  *  the returned offset/length are different from the queried offset/length.

  1290  *

  1291  * For NS_QUERY_TEXT_RECT, fail if cached offset/length aren't equals to input.

  1292  *   Cocoa widget always queries selected offset, so it works on it.

  1293  *

  1294  * For NS_QUERY_CARET_RECT, fail if cached offset isn't equals to input

  1295  */

  1296 bool

  1297 TabParent::HandleQueryContentEvent(WidgetQueryContentEvent& aEvent)

  1298 {

  1299   aEvent.mSucceeded = false;

  1300   aEvent.mWasAsync = false;

  1301   aEvent.mReply.mFocusedWidget = nsCOMPtr<nsIWidget>(GetWidget()).get();

  1303   switch (aEvent.message)

  1304   {

  1305   case NS_QUERY_SELECTED_TEXT:

  1306     {

  1307       aEvent.mReply.mOffset = std::min(mIMESelectionAnchor, mIMESelectionFocus);

  1308       if (mIMESelectionAnchor == mIMESelectionFocus) {

  1309         aEvent.mReply.mString.Truncate(0);

  1310       } else {

  1311         if (mIMESelectionAnchor > mIMECacheText.Length() ||

  1312             mIMESelectionFocus > mIMECacheText.Length()) {

  1313           break;

  1314         }

  1315         uint32_t selLen = mIMESelectionAnchor > mIMESelectionFocus ?

  1316                           mIMESelectionAnchor - mIMESelectionFocus :

  1317                           mIMESelectionFocus - mIMESelectionAnchor;

  1318         aEvent.mReply.mString = Substring(mIMECacheText,

  1319                                           aEvent.mReply.mOffset,

  1320                                           selLen);

  1321       }

  1322       aEvent.mReply.mReversed = mIMESelectionFocus < mIMESelectionAnchor;

  1323       aEvent.mReply.mHasSelection = true;

  1324       aEvent.mSucceeded = true;

  1325     }

  1326     break;

  1327   case NS_QUERY_TEXT_CONTENT:

  1328     {

  1329       uint32_t inputOffset = aEvent.mInput.mOffset,

  1330                inputEnd = inputOffset + aEvent.mInput.mLength;

  1332       if (inputEnd > mIMECacheText.Length()) {

  1333         inputEnd = mIMECacheText.Length();

  1334       }

  1335       if (inputEnd < inputOffset) {

  1336         break;

  1337       }

  1338       aEvent.mReply.mOffset = inputOffset;

  1339       aEvent.mReply.mString = Substring(mIMECacheText,

  1340                                         inputOffset,

  1341                                         inputEnd - inputOffset);

  1342       aEvent.mSucceeded = true;

  1343     }

  1344     break;

  1345   case NS_QUERY_TEXT_RECT:

  1346     {

  1347       if (aEvent.mInput.mOffset != mIMECompositionRectOffset ||

  1348           aEvent.mInput.mLength != 1) {

  1349         break;

  1350       }

  1352       aEvent.mReply.mOffset = mIMECompositionRectOffset;

  1353       aEvent.mReply.mRect = mIMECompositionRect - GetChildProcessOffset();

  1354       aEvent.mSucceeded = true;

  1355     }

  1356     break;

  1357   case NS_QUERY_CARET_RECT:

  1358     {

  1359       if (aEvent.mInput.mOffset != mIMECompositionRectOffset) {

  1360         break;

  1361       }

  1363       aEvent.mReply.mOffset = mIMECompositionRectOffset;

  1364       aEvent.mReply.mRect = mIMECaretRect - GetChildProcessOffset();

  1365       aEvent.mSucceeded = true;

  1366     }

  1367     break;

  1368   }

  1369   return true;

  1370 }

  1372 bool

  1373 TabParent::SendCompositionEvent(WidgetCompositionEvent& event)

  1374 {

  1375   if (mIsDestroyed) {

  1376     return false;

  1377   }

  1378   mIMEComposing = event.message != NS_COMPOSITION_END;

  1379   mIMECompositionStart = std::min(mIMESelectionAnchor, mIMESelectionFocus);

  1380   if (mIMECompositionEnding)

  1381     return true;

  1382   event.mSeqno = ++mIMESeqno;

  1383   return PBrowserParent::SendCompositionEvent(event);

  1384 }

  1386 /**

  1387  * During REQUEST_TO_COMMIT_COMPOSITION or REQUEST_TO_CANCEL_COMPOSITION,

  1388  * widget usually sends a NS_TEXT_TEXT event to finalize or clear the

  1389  * composition, respectively

  1390  *

  1391  * Because the event will not reach content in time, we intercept it

  1392  * here and pass the text as the EndIMEComposition return value

  1393  */

  1394 bool

  1395 TabParent::SendTextEvent(WidgetTextEvent& event)

  1396 {

  1397   if (mIsDestroyed) {

  1398     return false;

  1399   }

  1400   if (mIMECompositionEnding) {

  1401     mIMECompositionText = event.theText;

  1402     return true;

  1403   }

  1405   // We must be able to simulate the selection because

  1406   // we might not receive selection updates in time

  1407   if (!mIMEComposing) {

  1408     mIMECompositionStart = std::min(mIMESelectionAnchor, mIMESelectionFocus);

  1409   }

  1410   mIMESelectionAnchor = mIMESelectionFocus =

  1411       mIMECompositionStart + event.theText.Length();

  1413   event.mSeqno = ++mIMESeqno;

  1414   return PBrowserParent::SendTextEvent(event);

  1415 }

  1417 bool

  1418 TabParent::SendSelectionEvent(WidgetSelectionEvent& event)

  1419 {

  1420   if (mIsDestroyed) {

  1421     return false;

  1422   }

  1423   mIMESelectionAnchor = event.mOffset + (event.mReversed ? event.mLength : 0);

  1424   mIMESelectionFocus = event.mOffset + (!event.mReversed ? event.mLength : 0);

  1425   event.mSeqno = ++mIMESeqno;

  1426   return PBrowserParent::SendSelectionEvent(event);

  1427 }

  1429 /*static*/ TabParent*

  1430 TabParent::GetFrom(nsFrameLoader* aFrameLoader)

  1431 {

  1432   if (!aFrameLoader) {

  1433     return nullptr;

  1434   }

  1435   PBrowserParent* remoteBrowser = aFrameLoader->GetRemoteBrowser();

  1436   return static_cast<TabParent*>(remoteBrowser);

  1437 }

  1439 /*static*/ TabParent*

  1440 TabParent::GetFrom(nsIContent* aContent)

  1441 {

  1442   nsCOMPtr<nsIFrameLoaderOwner> loaderOwner = do_QueryInterface(aContent);

  1443   if (!loaderOwner) {

  1444     return nullptr;

  1445   }

  1446   nsRefPtr<nsFrameLoader> frameLoader = loaderOwner->GetFrameLoader();

  1447   return GetFrom(frameLoader);

  1448 }

  1450 RenderFrameParent*

  1451 TabParent::GetRenderFrame()

  1452 {

  1453   if (ManagedPRenderFrameParent().IsEmpty()) {

  1454     return nullptr;

  1455   }

  1456   return static_cast<RenderFrameParent*>(ManagedPRenderFrameParent()[0]);

  1457 }

  1459 bool

  1460 TabParent::RecvEndIMEComposition(const bool& aCancel,

  1461                                  nsString* aComposition)

  1462 {

  1463   nsCOMPtr<nsIWidget> widget = GetWidget();

  1464   if (!widget)

  1465     return true;

  1467   mIMECompositionEnding = true;

  1469   widget->NotifyIME(IMENotification(aCancel ? REQUEST_TO_CANCEL_COMPOSITION :

  1470                                               REQUEST_TO_COMMIT_COMPOSITION));

  1472   mIMECompositionEnding = false;

  1473   *aComposition = mIMECompositionText;

  1474   mIMECompositionText.Truncate(0);

  1475   return true;

  1476 }

  1478 bool

  1479 TabParent::RecvGetInputContext(int32_t* aIMEEnabled,

  1480                                int32_t* aIMEOpen,

  1481                                intptr_t* aNativeIMEContext)

  1482 {

  1483   nsCOMPtr<nsIWidget> widget = GetWidget();

  1484   if (!widget) {

  1485     *aIMEEnabled = IMEState::DISABLED;

  1486     *aIMEOpen = IMEState::OPEN_STATE_NOT_SUPPORTED;

  1487     *aNativeIMEContext = 0;

  1488     return true;

  1489   }

  1491   InputContext context = widget->GetInputContext();

  1492   *aIMEEnabled = static_cast<int32_t>(context.mIMEState.mEnabled);

  1493   *aIMEOpen = static_cast<int32_t>(context.mIMEState.mOpen);

  1494   *aNativeIMEContext = reinterpret_cast<intptr_t>(context.mNativeIMEContext);

  1495   return true;

  1496 }

  1498 bool

  1499 TabParent::RecvSetInputContext(const int32_t& aIMEEnabled,

  1500                                const int32_t& aIMEOpen,

  1501                                const nsString& aType,

  1502                                const nsString& aInputmode,

  1503                                const nsString& aActionHint,

  1504                                const int32_t& aCause,

  1505                                const int32_t& aFocusChange)

  1506 {

  1507   // mIMETabParent (which is actually static) tracks which if any TabParent has IMEFocus

  1508   // When the input mode is set to anything but IMEState::DISABLED,

  1509   // mIMETabParent should be set to this

  1510   mIMETabParent =

  1511     aIMEEnabled != static_cast<int32_t>(IMEState::DISABLED) ? this : nullptr;

  1512   nsCOMPtr<nsIWidget> widget = GetWidget();

  1513   if (!widget || !AllowContentIME())

  1514     return true;

  1516   InputContext context;

  1517   context.mIMEState.mEnabled = static_cast<IMEState::Enabled>(aIMEEnabled);

  1518   context.mIMEState.mOpen = static_cast<IMEState::Open>(aIMEOpen);

  1519   context.mHTMLInputType.Assign(aType);

  1520   context.mHTMLInputInputmode.Assign(aInputmode);

  1521   context.mActionHint.Assign(aActionHint);

  1522   InputContextAction action(

  1523     static_cast<InputContextAction::Cause>(aCause),

  1524     static_cast<InputContextAction::FocusChange>(aFocusChange));

  1525   widget->SetInputContext(context, action);

  1527   nsCOMPtr<nsIObserverService> observerService = mozilla::services::GetObserverService();

  1528   if (!observerService)

  1529     return true;

  1531   nsAutoString state;

  1532   state.AppendInt(aIMEEnabled);

  1533   observerService->NotifyObservers(nullptr, "ime-enabled-state-changed", state.get());

  1535   return true;

  1536 }

  1538 bool

  1539 TabParent::RecvIsParentWindowMainWidgetVisible(bool* aIsVisible)

  1540 {

  1541   nsCOMPtr<nsIContent> frame = do_QueryInterface(mFrameElement);

  1542   if (!frame)

  1543     return true;

  1544   nsCOMPtr<nsIDOMWindowUtils> windowUtils =

  1545     do_QueryInterface(frame->OwnerDoc()->GetWindow());

  1546   nsresult rv = windowUtils->GetIsParentWindowMainWidgetVisible(aIsVisible);

  1547   return NS_SUCCEEDED(rv);

  1548 }

  1550 bool

  1551 TabParent::RecvGetDPI(float* aValue)

  1552 {

  1553   TryCacheDPIAndScale();

  1555   NS_ABORT_IF_FALSE(mDPI > 0,

  1556                     "Must not ask for DPI before OwnerElement is received!");

  1557   *aValue = mDPI;

  1558   return true;

  1559 }

  1561 bool

  1562 TabParent::RecvGetDefaultScale(double* aValue)

  1563 {

  1564   TryCacheDPIAndScale();

  1566   NS_ABORT_IF_FALSE(mDefaultScale.scale > 0,

  1567                     "Must not ask for scale before OwnerElement is received!");

  1568   *aValue = mDefaultScale.scale;

  1569   return true;

  1570 }

  1572 bool

  1573 TabParent::RecvGetWidgetNativeData(WindowsHandle* aValue)

  1574 {

  1575   nsCOMPtr<nsIContent> content = do_QueryInterface(mFrameElement);

  1576   if (content) {

  1577     nsIPresShell* shell = content->OwnerDoc()->GetShell();

  1578     if (shell) {

  1579       nsViewManager* vm = shell->GetViewManager();

  1580       nsCOMPtr<nsIWidget> widget;

  1581       vm->GetRootWidget(getter_AddRefs(widget));

  1582       if (widget) {

  1583         *aValue = reinterpret_cast<WindowsHandle>(

  1584           widget->GetNativeData(NS_NATIVE_SHAREABLE_WINDOW));

  1585         return true;

  1586       }

  1587     }

  1588   }

  1589   return false;

  1590 }

  1592 bool

  1593 TabParent::ReceiveMessage(const nsString& aMessage,

  1594                           bool aSync,

  1595                           const StructuredCloneData* aCloneData,

  1596                           CpowHolder* aCpows,

  1597                           nsIPrincipal* aPrincipal,

  1598                           InfallibleTArray<nsString>* aJSONRetVal)

  1599 {

  1600   nsRefPtr<nsFrameLoader> frameLoader = GetFrameLoader();

  1601   if (frameLoader && frameLoader->GetFrameMessageManager()) {

  1602     nsRefPtr<nsFrameMessageManager> manager =

  1603       frameLoader->GetFrameMessageManager();

  1605     manager->ReceiveMessage(mFrameElement,

  1606                             aMessage,

  1607                             aSync,

  1608                             aCloneData,

  1609                             aCpows,

  1610                             aPrincipal,

  1611                             aJSONRetVal);

  1612   }

  1613   return true;

  1614 }

  1616 PIndexedDBParent*

  1617 TabParent::AllocPIndexedDBParent(

  1618                             const nsCString& aGroup,

  1619                             const nsCString& aASCIIOrigin, bool* /* aAllowed */)

  1620 {

  1621   return new IndexedDBParent(this);

  1622 }

  1624 bool

  1625 TabParent::DeallocPIndexedDBParent(PIndexedDBParent* aActor)

  1626 {

  1627   delete aActor;

  1628   return true;

  1629 }

  1631 bool

  1632 TabParent::RecvPIndexedDBConstructor(PIndexedDBParent* aActor,

  1633                                      const nsCString& aGroup,

  1634                                      const nsCString& aASCIIOrigin,

  1635                                      bool* aAllowed)

  1636 {

  1637   nsRefPtr<IndexedDatabaseManager> mgr = IndexedDatabaseManager::GetOrCreate();

  1638   NS_ENSURE_TRUE(mgr, false);

  1640   if (!IndexedDatabaseManager::IsMainProcess()) {

  1641     NS_RUNTIMEABORT("Not supported yet!");

  1642   }

  1644   nsresult rv;

  1646   // XXXbent Need to make sure we have a whitelist for chrome databases!

  1648   // Verify that the child is requesting to access a database it's allowed to

  1649   // see.  (aASCIIOrigin here specifies a TabContext + a website origin, and

  1650   // we're checking that the TabContext may access it.)

  1651   //

  1652   // We have to check IsBrowserOrApp() because TabContextMayAccessOrigin will

  1653   // fail if we're not a browser-or-app, since aASCIIOrigin will be a plain URI,

  1654   // but TabContextMayAccessOrigin will construct an extended origin using

  1655   // app-id 0.  Note that as written below, we allow a non browser-or-app child

  1656   // to read any database.  That's a security hole, but we don't ship a

  1657   // configuration which creates non browser-or-app children, so it's not a big

  1658   // deal.

  1659   if (!aASCIIOrigin.EqualsLiteral("chrome") && IsBrowserOrApp() &&

  1660       !IndexedDatabaseManager::TabContextMayAccessOrigin(*this, aASCIIOrigin)) {

  1662     NS_WARNING("App attempted to open databases that it does not have "

  1663                "permission to access!");

  1664     return false;

  1665   }

  1667   nsCOMPtr<nsINode> node = do_QueryInterface(GetOwnerElement());

  1668   NS_ENSURE_TRUE(node, false);

  1670   nsIDocument* doc = node->GetOwnerDocument();

  1671   NS_ENSURE_TRUE(doc, false);

  1673   nsCOMPtr<nsPIDOMWindow> window = doc->GetInnerWindow();

  1674   NS_ENSURE_TRUE(window, false);

  1676   // Let's do a current inner check to see if the inner is active or is in

  1677   // bf cache, and bail out if it's not active.

  1678   nsCOMPtr<nsPIDOMWindow> outer = doc->GetWindow();

  1679   if (!outer || outer->GetCurrentInnerWindow() != window) {

  1680     *aAllowed = false;

  1681     return true;

  1682   }

  1684   ContentParent* contentParent = Manager();

  1685   NS_ASSERTION(contentParent, "Null manager?!");

  1687   nsRefPtr<IDBFactory> factory;

  1688   rv = IDBFactory::Create(window, aGroup, aASCIIOrigin, contentParent,

  1689                           getter_AddRefs(factory));

  1690   NS_ENSURE_SUCCESS(rv, false);

  1692   if (!factory) {

  1693     *aAllowed = false;

  1694     return true;

  1695   }

  1697   IndexedDBParent* actor = static_cast<IndexedDBParent*>(aActor);

  1698   actor->mFactory = factory;

  1699   actor->mASCIIOrigin = aASCIIOrigin;

  1701   *aAllowed = true;

  1702   return true;

  1703 }

  1705 // nsIAuthPromptProvider

  1707 // This method is largely copied from nsDocShell::GetAuthPrompt

  1708 NS_IMETHODIMP

  1709 TabParent::GetAuthPrompt(uint32_t aPromptReason, const nsIID& iid,

  1710                           void** aResult)

  1711 {

  1712   // we're either allowing auth, or it's a proxy request

  1713   nsresult rv;

  1714   nsCOMPtr<nsIPromptFactory> wwatch =

  1715     do_GetService(NS_WINDOWWATCHER_CONTRACTID, &rv);

  1716   NS_ENSURE_SUCCESS(rv, rv);

  1718   nsCOMPtr<nsIDOMWindow> window;

  1719   nsCOMPtr<nsIContent> frame = do_QueryInterface(mFrameElement);

  1720   if (frame)

  1721     window = do_QueryInterface(frame->OwnerDoc()->GetWindow());

  1723   // Get an auth prompter for our window so that the parenting

  1724   // of the dialogs works as it should when using tabs.

  1725   return wwatch->GetPrompt(window, iid,

  1726                            reinterpret_cast<void**>(aResult));

  1727 }

  1729 PColorPickerParent*

  1730 TabParent::AllocPColorPickerParent(const nsString& aTitle,

  1731                                    const nsString& aInitialColor)

  1732 {

  1733   return new ColorPickerParent(aTitle, aInitialColor);

  1734 }

  1736 bool

  1737 TabParent::DeallocPColorPickerParent(PColorPickerParent* actor)

  1738 {

  1739   delete actor;

  1740   return true;

  1741 }

  1743 bool

  1744 TabParent::RecvInitRenderFrame(PRenderFrameParent* aFrame,

  1745                                ScrollingBehavior* aScrolling,

  1746                                TextureFactoryIdentifier* aTextureFactoryIdentifier,

  1747                                uint64_t* aLayersId,

  1748                                bool *aSuccess)

  1749 {

  1750   *aScrolling = UseAsyncPanZoom() ? ASYNC_PAN_ZOOM : DEFAULT_SCROLLING;

  1751   *aTextureFactoryIdentifier = TextureFactoryIdentifier();

  1752   *aLayersId = 0;

  1754   nsRefPtr<nsFrameLoader> frameLoader = GetFrameLoader();

  1755   if (!frameLoader) {

  1756     NS_WARNING("Can't allocate graphics resources. May already be shutting down.");

  1757     *aSuccess = false;

  1758     return true;

  1759   }

  1761   static_cast<RenderFrameParent*>(aFrame)->Init(frameLoader, *aScrolling,

  1762                                                 aTextureFactoryIdentifier, aLayersId);

  1764   *aSuccess = true;

  1765   return true;

  1766 }

  1768 PRenderFrameParent*

  1769 TabParent::AllocPRenderFrameParent()

  1770 {

  1771   MOZ_ASSERT(ManagedPRenderFrameParent().IsEmpty());

  1772   return new RenderFrameParent();

  1773 }

  1775 bool

  1776 TabParent::DeallocPRenderFrameParent(PRenderFrameParent* aFrame)

  1777 {

  1778   delete aFrame;

  1779   return true;

  1780 }

  1782 mozilla::docshell::POfflineCacheUpdateParent*

  1783 TabParent::AllocPOfflineCacheUpdateParent(const URIParams& aManifestURI,

  1784                                           const URIParams& aDocumentURI,

  1785                                           const bool& aStickDocument)

  1786 {

  1787   nsRefPtr<mozilla::docshell::OfflineCacheUpdateParent> update =

  1788     new mozilla::docshell::OfflineCacheUpdateParent(OwnOrContainingAppId(),

  1789                                                     IsBrowserElement());

  1790   // Use this reference as the IPDL reference.

  1791   return update.forget().take();

  1792 }

  1794 bool

  1795 TabParent::RecvPOfflineCacheUpdateConstructor(POfflineCacheUpdateParent* aActor,

  1796                                               const URIParams& aManifestURI,

  1797                                               const URIParams& aDocumentURI,

  1798                                               const bool& aStickDocument)

  1799 {

  1800   MOZ_ASSERT(aActor);

  1802   nsRefPtr<mozilla::docshell::OfflineCacheUpdateParent> update =

  1803     static_cast<mozilla::docshell::OfflineCacheUpdateParent*>(aActor);

  1805   nsresult rv = update->Schedule(aManifestURI, aDocumentURI, aStickDocument);

  1806   if (NS_FAILED(rv) && !IsDestroyed()) {

  1807     // Inform the child of failure.

  1808     unused << update->SendFinish(false, false);

  1809   }

  1811   return true;

  1812 }

  1814 bool

  1815 TabParent::DeallocPOfflineCacheUpdateParent(POfflineCacheUpdateParent* aActor)

  1816 {

  1817   // Reclaim the IPDL reference.

  1818   nsRefPtr<mozilla::docshell::OfflineCacheUpdateParent> update =

  1819     dont_AddRef(

  1820       static_cast<mozilla::docshell::OfflineCacheUpdateParent*>(aActor));

  1821   return true;

  1822 }

  1824 bool

  1825 TabParent::RecvSetOfflinePermission(const IPC::Principal& aPrincipal)

  1826 {

  1827   nsIPrincipal* principal = aPrincipal;

  1828   nsContentUtils::MaybeAllowOfflineAppByDefault(principal, nullptr);

  1829   return true;

  1830 }

  1832 bool

  1833 TabParent::AllowContentIME()

  1834 {

  1835   nsFocusManager* fm = nsFocusManager::GetFocusManager();

  1836   NS_ENSURE_TRUE(fm, false);

  1838   nsCOMPtr<nsIContent> focusedContent = fm->GetFocusedContent();

  1839   if (focusedContent && focusedContent->IsEditable())

  1840     return false;

  1842   return true;

  1843 }

  1845 already_AddRefed<nsFrameLoader>

  1846 TabParent::GetFrameLoader() const

  1847 {

  1848   nsCOMPtr<nsIFrameLoaderOwner> frameLoaderOwner = do_QueryInterface(mFrameElement);

  1849   return frameLoaderOwner ? frameLoaderOwner->GetFrameLoader() : nullptr;

  1850 }

  1852 void

  1853 TabParent::TryCacheDPIAndScale()

  1854 {

  1855   if (mDPI > 0) {

  1856     return;

  1857   }

  1859   nsCOMPtr<nsIWidget> widget = GetWidget();

  1861   if (!widget && mFrameElement) {

  1862     // Even if we don't have a widget (e.g. because we're display:none), there's

  1863     // probably a widget somewhere in the hierarchy our frame element lives in.

  1864     widget = nsContentUtils::WidgetForDocument(mFrameElement->OwnerDoc());

  1865   }

  1867   if (widget) {

  1868     mDPI = widget->GetDPI();

  1869     mDefaultScale = widget->GetDefaultScale();

  1870   }

  1871 }

  1873 already_AddRefed<nsIWidget>

  1874 TabParent::GetWidget() const

  1875 {

  1876   nsCOMPtr<nsIContent> content = do_QueryInterface(mFrameElement);

  1877   if (!content)

  1878     return nullptr;

  1880   nsIFrame *frame = content->GetPrimaryFrame();

  1881   if (!frame)

  1882     return nullptr;

  1884   nsCOMPtr<nsIWidget> widget = frame->GetNearestWidget();

  1885   return widget.forget();

  1886 }

  1888 bool

  1889 TabParent::UseAsyncPanZoom()

  1890 {

  1891   bool usingOffMainThreadCompositing = !!CompositorParent::CompositorLoop();

  1892   bool asyncPanZoomEnabled =

  1893     Preferences::GetBool("layers.async-pan-zoom.enabled", false);

  1894   return (usingOffMainThreadCompositing && asyncPanZoomEnabled &&

  1895           GetScrollingBehavior() == ASYNC_PAN_ZOOM);

  1896 }

  1898 void

  1899 TabParent::MaybeForwardEventToRenderFrame(WidgetInputEvent& aEvent,

  1900                                           ScrollableLayerGuid* aOutTargetGuid)

  1901 {

  1902   if (RenderFrameParent* rfp = GetRenderFrame()) {

  1903     rfp->NotifyInputEvent(aEvent, aOutTargetGuid);

  1904   }

  1905 }

  1907 bool

  1908 TabParent::RecvBrowserFrameOpenWindow(PBrowserParent* aOpener,

  1909                                       const nsString& aURL,

  1910                                       const nsString& aName,

  1911                                       const nsString& aFeatures,

  1912                                       bool* aOutWindowOpened)

  1913 {

  1914   BrowserElementParent::OpenWindowResult opened =

  1915     BrowserElementParent::OpenWindowOOP(static_cast<TabParent*>(aOpener),

  1916                                         this, aURL, aName, aFeatures);

  1917   *aOutWindowOpened = (opened != BrowserElementParent::OPEN_WINDOW_CANCELLED);

  1918   return true;

  1919 }

  1921 bool

  1922 TabParent::RecvPRenderFrameConstructor(PRenderFrameParent* actor)

  1923 {

  1924   return true;

  1925 }

  1927 bool

  1928 TabParent::RecvZoomToRect(const uint32_t& aPresShellId,

  1929                           const ViewID& aViewId,

  1930                           const CSSRect& aRect)

  1931 {

  1932   if (RenderFrameParent* rfp = GetRenderFrame()) {

  1933     rfp->ZoomToRect(aPresShellId, aViewId, aRect);

  1934   }

  1935   return true;

  1936 }

  1938 bool

  1939 TabParent::RecvUpdateZoomConstraints(const uint32_t& aPresShellId,

  1940                                      const ViewID& aViewId,

  1941                                      const bool& aIsRoot,

  1942                                      const ZoomConstraints& aConstraints)

  1943 {

  1944   if (RenderFrameParent* rfp = GetRenderFrame()) {

  1945     rfp->UpdateZoomConstraints(aPresShellId, aViewId, aIsRoot, aConstraints);

  1946   }

  1947   return true;

  1948 }

  1950 bool

  1951 TabParent::RecvContentReceivedTouch(const ScrollableLayerGuid& aGuid,

  1952                                     const bool& aPreventDefault)

  1953 {

  1954   if (RenderFrameParent* rfp = GetRenderFrame()) {

  1955     rfp->ContentReceivedTouch(aGuid, aPreventDefault);

  1956   }

  1957   return true;

  1958 }

  1960 already_AddRefed<nsILoadContext>

  1961 TabParent::GetLoadContext()

  1962 {

  1963   nsCOMPtr<nsILoadContext> loadContext;

  1964   if (mLoadContext) {

  1965     loadContext = mLoadContext;

  1966   } else {

  1967     loadContext = new LoadContext(GetOwnerElement(),

  1968                                   OwnOrContainingAppId(),

  1969                                   true /* aIsContent */,

  1970                                   mChromeFlags & nsIWebBrowserChrome::CHROME_PRIVATE_WINDOW,

  1971                                   mChromeFlags & nsIWebBrowserChrome::CHROME_REMOTE_WINDOW,

  1972                                   IsBrowserElement());

  1973     mLoadContext = loadContext;

  1974   }

  1975   return loadContext.forget();

  1976 }

  1978 /* Be careful if you call this method while proceding a real touch event. For

  1979  * example sending a touchstart during a real touchend may results into

  1980  * a busted mEventCaptureDepth and following touch events may not do what you

  1981  * expect.

  1982  */

  1983 NS_IMETHODIMP

  1984 TabParent::InjectTouchEvent(const nsAString& aType,

  1985                             uint32_t* aIdentifiers,

  1986                             int32_t* aXs,

  1987                             int32_t* aYs,

  1988                             uint32_t* aRxs,

  1989                             uint32_t* aRys,

  1990                             float* aRotationAngles,

  1991                             float* aForces,

  1992                             uint32_t aCount,

  1993                             int32_t aModifiers)

  1994 {

  1995   uint32_t msg;

  1996   nsContentUtils::GetEventIdAndAtom(aType, NS_TOUCH_EVENT, &msg);

  1997   if (msg != NS_TOUCH_START && msg != NS_TOUCH_MOVE &&

  1998       msg != NS_TOUCH_END && msg != NS_TOUCH_CANCEL) {

  1999     return NS_ERROR_FAILURE;

  2000   }

  2002   nsCOMPtr<nsIWidget> widget = GetWidget();

  2003   if (!widget) {

  2004     return NS_ERROR_FAILURE;

  2005   }

  2007   WidgetTouchEvent event(true, msg, widget);

  2008   event.modifiers = aModifiers;

  2009   event.time = PR_IntervalNow();

  2011   event.touches.SetCapacity(aCount);

  2012   for (uint32_t i = 0; i < aCount; ++i) {

  2013     nsRefPtr<Touch> t = new Touch(aIdentifiers[i],

  2014                                   nsIntPoint(aXs[i], aYs[i]),

  2015                                   nsIntPoint(aRxs[i], aRys[i]),

  2016                                   aRotationAngles[i],

  2017                                   aForces[i]);

  2019     // Consider all injected touch events as changedTouches. For more details

  2020     // about the meaning of changedTouches for each event, see

  2021     // https://developer.mozilla.org/docs/Web/API/TouchEvent.changedTouches

  2022     t->mChanged = true;

  2023     event.touches.AppendElement(t);

  2024   }

  2026   if ((msg == NS_TOUCH_END || msg == NS_TOUCH_CANCEL) && sEventCapturer) {

  2027     WidgetGUIEvent* guiEvent = event.AsGUIEvent();

  2028     TryCapture(*guiEvent);

  2029   }

  2031   SendRealTouchEvent(event);

  2032   return NS_OK;

  2033 }

  2035 NS_IMETHODIMP

  2036 TabParent::GetUseAsyncPanZoom(bool* useAsyncPanZoom)

  2037 {

  2038   *useAsyncPanZoom = UseAsyncPanZoom();

  2039   return NS_OK;

  2040 }

  2042 NS_IMETHODIMP

  2043 TabParent::SetIsDocShellActive(bool isActive)

  2044 {

  2045   unused << SendSetIsDocShellActive(isActive);

  2046   return NS_OK;

  2047 }

  2049 } // namespace tabs

  2050 } // namespace mozilla

The Tor Browser / file revision

dom/ipc/TabParent.cpp@6474c204b198

dom/ipc/TabParent.cpp