michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 sw=2 et tw=78: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0:  * Class for managing loading of a subframe (creation of the docshell,
michael@0:  * handling of loads in it, recursion-checking).
michael@0:  */
michael@0: 
michael@0: #include "base/basictypes.h"
michael@0: 
michael@0: #include "prenv.h"
michael@0: 
michael@0: #include "mozIApplication.h"
michael@0: #include "nsIDOMHTMLIFrameElement.h"
michael@0: #include "nsIDOMHTMLFrameElement.h"
michael@0: #include "nsIDOMMozBrowserFrame.h"
michael@0: #include "nsIDOMWindow.h"
michael@0: #include "nsIPresShell.h"
michael@0: #include "nsIContentInlines.h"
michael@0: #include "nsIContentViewer.h"
michael@0: #include "nsIDocument.h"
michael@0: #include "nsIDOMDocument.h"
michael@0: #include "nsIDOMFile.h"
michael@0: #include "nsPIDOMWindow.h"
michael@0: #include "nsIWebNavigation.h"
michael@0: #include "nsIWebProgress.h"
michael@0: #include "nsIDocShell.h"
michael@0: #include "nsIDocShellTreeOwner.h"
michael@0: #include "nsIDocShellLoadInfo.h"
michael@0: #include "nsIDOMApplicationRegistry.h"
michael@0: #include "nsIBaseWindow.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "nsCxPusher.h"
michael@0: #include "nsIXPConnect.h"
michael@0: #include "nsUnicharUtils.h"
michael@0: #include "nsIScriptGlobalObject.h"
michael@0: #include "nsIScriptSecurityManager.h"
michael@0: #include "nsIScrollable.h"
michael@0: #include "nsFrameLoader.h"
michael@0: #include "nsIDOMEventTarget.h"
michael@0: #include "nsIFrame.h"
michael@0: #include "nsIScrollableFrame.h"
michael@0: #include "nsSubDocumentFrame.h"
michael@0: #include "nsError.h"
michael@0: #include "nsISHistory.h"
michael@0: #include "nsISHistoryInternal.h"
michael@0: #include "nsIDOMHTMLDocument.h"
michael@0: #include "nsIXULWindow.h"
michael@0: #include "nsIEditor.h"
michael@0: #include "nsIMozBrowserFrame.h"
michael@0: #include "nsIPermissionManager.h"
michael@0: #include "nsISHistory.h"
michael@0: #include "nsNullPrincipal.h"
michael@0: 
michael@0: #include "nsLayoutUtils.h"
michael@0: #include "nsView.h"
michael@0: 
michael@0: #include "nsIURI.h"
michael@0: #include "nsIURL.h"
michael@0: #include "nsNetUtil.h"
michael@0: 
michael@0: #include "nsGkAtoms.h"
michael@0: #include "nsNameSpaceManager.h"
michael@0: 
michael@0: #include "nsThreadUtils.h"
michael@0: 
michael@0: #include "nsIDOMChromeWindow.h"
michael@0: #include "nsInProcessTabChildGlobal.h"
michael@0: 
michael@0: #include "Layers.h"
michael@0: 
michael@0: #include "AppProcessChecker.h"
michael@0: #include "ContentParent.h"
michael@0: #include "TabParent.h"
michael@0: #include "mozilla/AsyncEventDispatcher.h"
michael@0: #include "mozilla/GuardObjects.h"
michael@0: #include "mozilla/Preferences.h"
michael@0: #include "mozilla/unused.h"
michael@0: #include "mozilla/dom/Element.h"
michael@0: #include "mozilla/layout/RenderFrameParent.h"
michael@0: #include "nsIAppsService.h"
michael@0: #include "GeckoProfiler.h"
michael@0: 
michael@0: #include "jsapi.h"
michael@0: #include "mozilla/dom/HTMLIFrameElement.h"
michael@0: #include "nsSandboxFlags.h"
michael@0: #include "JavaScriptParent.h"
michael@0: 
michael@0: #include "mozilla/dom/StructuredCloneUtils.h"
michael@0: 
michael@0: #ifdef MOZ_XUL
michael@0: #include "nsXULPopupManager.h"
michael@0: #endif
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::hal;
michael@0: using namespace mozilla::dom;
michael@0: using namespace mozilla::dom::ipc;
michael@0: using namespace mozilla::layers;
michael@0: using namespace mozilla::layout;
michael@0: typedef FrameMetrics::ViewID ViewID;
michael@0: 
michael@0: class nsAsyncDocShellDestroyer : public nsRunnable
michael@0: {
michael@0: public:
michael@0:   nsAsyncDocShellDestroyer(nsIDocShell* aDocShell)
michael@0:     : mDocShell(aDocShell)
michael@0:   {
michael@0:   }
michael@0: 
michael@0:   NS_IMETHOD Run()
michael@0:   {
michael@0:     nsCOMPtr<nsIBaseWindow> base_win(do_QueryInterface(mDocShell));
michael@0:     if (base_win) {
michael@0:       base_win->Destroy();
michael@0:     }
michael@0:     return NS_OK;
michael@0:   }
michael@0:   nsRefPtr<nsIDocShell> mDocShell;
michael@0: };
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(nsContentView, nsIContentView)
michael@0: 
michael@0: nsresult
michael@0: nsContentView::Update(const ViewConfig& aConfig)
michael@0: {
michael@0:   if (aConfig == mConfig) {
michael@0:     return NS_OK;
michael@0:   }
michael@0:   mConfig = aConfig;
michael@0: 
michael@0:   // View changed.  Try to locate our subdoc frame and invalidate
michael@0:   // it if found.
michael@0:   if (!mFrameLoader) {
michael@0:     if (IsRoot()) {
michael@0:       // Oops, don't have a frame right now.  That's OK; the view
michael@0:       // config persists and will apply to the next frame we get, if we
michael@0:       // ever get one.
michael@0:       return NS_OK;
michael@0:     } else {
michael@0:       // This view is no longer valid.
michael@0:       return NS_ERROR_NOT_AVAILABLE;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   if (RenderFrameParent* rfp = mFrameLoader->GetCurrentRemoteFrame()) {
michael@0:     rfp->ContentViewScaleChanged(this);
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::ScrollTo(float aXpx, float aYpx)
michael@0: {
michael@0:   ViewConfig config(mConfig);
michael@0:   config.mScrollOffset = nsPoint(nsPresContext::CSSPixelsToAppUnits(aXpx),
michael@0:                                  nsPresContext::CSSPixelsToAppUnits(aYpx));
michael@0:   return Update(config);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::ScrollBy(float aDXpx, float aDYpx)
michael@0: {
michael@0:   ViewConfig config(mConfig);
michael@0:   config.mScrollOffset.MoveBy(nsPresContext::CSSPixelsToAppUnits(aDXpx),
michael@0:                               nsPresContext::CSSPixelsToAppUnits(aDYpx));
michael@0:   return Update(config);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::SetScale(float aXScale, float aYScale)
michael@0: {
michael@0:   ViewConfig config(mConfig);
michael@0:   config.mXScale = aXScale;
michael@0:   config.mYScale = aYScale;
michael@0:   return Update(config);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::GetScrollX(float* aViewScrollX)
michael@0: {
michael@0:   *aViewScrollX = nsPresContext::AppUnitsToFloatCSSPixels(
michael@0:     mConfig.mScrollOffset.x);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::GetScrollY(float* aViewScrollY)
michael@0: {
michael@0:   *aViewScrollY = nsPresContext::AppUnitsToFloatCSSPixels(
michael@0:     mConfig.mScrollOffset.y);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::GetViewportWidth(float* aWidth)
michael@0: {
michael@0:   *aWidth = nsPresContext::AppUnitsToFloatCSSPixels(mViewportSize.width);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::GetViewportHeight(float* aHeight)
michael@0: {
michael@0:   *aHeight = nsPresContext::AppUnitsToFloatCSSPixels(mViewportSize.height);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::GetContentWidth(float* aWidth)
michael@0: {
michael@0:   *aWidth = nsPresContext::AppUnitsToFloatCSSPixels(mContentSize.width);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::GetContentHeight(float* aHeight)
michael@0: {
michael@0:   *aHeight = nsPresContext::AppUnitsToFloatCSSPixels(mContentSize.height);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsContentView::GetId(nsContentViewId* aId)
michael@0: {
michael@0:   NS_ASSERTION(sizeof(nsContentViewId) == sizeof(ViewID),
michael@0:                "ID size for XPCOM ID and internal ID type are not the same!");
michael@0:   *aId = mScrollId;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: // Bug 136580: Limit to the number of nested content frames that can have the
michael@0: //             same URL. This is to stop content that is recursively loading
michael@0: //             itself.  Note that "#foo" on the end of URL doesn't affect
michael@0: //             whether it's considered identical, but "?foo" or ";foo" are
michael@0: //             considered and compared.
michael@0: // Bug 228829: Limit this to 1, like IE does.
michael@0: #define MAX_SAME_URL_CONTENT_FRAMES 1
michael@0: 
michael@0: // Bug 8065: Limit content frame depth to some reasonable level. This
michael@0: // does not count chrome frames when determining depth, nor does it
michael@0: // prevent chrome recursion.  Number is fairly arbitrary, but meant to
michael@0: // keep number of shells to a reasonable number on accidental recursion with a
michael@0: // small (but not 1) branching factor.  With large branching factors the number
michael@0: // of shells can rapidly become huge and run us out of memory.  To solve that,
michael@0: // we'd need to re-institute a fixed version of bug 98158.
michael@0: #define MAX_DEPTH_CONTENT_FRAMES 10
michael@0: 
michael@0: NS_IMPL_CYCLE_COLLECTION(nsFrameLoader, mDocShell, mMessageManager, mChildMessageManager)
michael@0: NS_IMPL_CYCLE_COLLECTING_ADDREF(nsFrameLoader)
michael@0: NS_IMPL_CYCLE_COLLECTING_RELEASE(nsFrameLoader)
michael@0: 
michael@0: NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsFrameLoader)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIFrameLoader)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIContentViewManager)
michael@0:   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIFrameLoader)
michael@0: NS_INTERFACE_MAP_END
michael@0: 
michael@0: nsFrameLoader::nsFrameLoader(Element* aOwner, bool aNetworkCreated)
michael@0:   : mOwnerContent(aOwner)
michael@0:   , mAppIdSentToPermissionManager(nsIScriptSecurityManager::NO_APP_ID)
michael@0:   , mDetachedSubdocViews(nullptr)
michael@0:   , mDepthTooGreat(false)
michael@0:   , mIsTopLevelContent(false)
michael@0:   , mDestroyCalled(false)
michael@0:   , mNeedsAsyncDestroy(false)
michael@0:   , mInSwap(false)
michael@0:   , mInShow(false)
michael@0:   , mHideCalled(false)
michael@0:   , mNetworkCreated(aNetworkCreated)
michael@0:   , mRemoteBrowserShown(false)
michael@0:   , mRemoteFrame(false)
michael@0:   , mClipSubdocument(true)
michael@0:   , mClampScrollPosition(true)
michael@0:   , mRemoteBrowserInitialized(false)
michael@0:   , mObservingOwnerContent(false)
michael@0:   , mVisible(true)
michael@0:   , mCurrentRemoteFrame(nullptr)
michael@0:   , mRemoteBrowser(nullptr)
michael@0:   , mChildID(0)
michael@0:   , mRenderMode(RENDER_MODE_DEFAULT)
michael@0:   , mEventMode(EVENT_MODE_NORMAL_DISPATCH)
michael@0:   , mPendingFrameSent(false)
michael@0: {
michael@0:   ResetPermissionManagerStatus();
michael@0: }
michael@0: 
michael@0: nsFrameLoader::~nsFrameLoader()
michael@0: {
michael@0:   mNeedsAsyncDestroy = true;
michael@0:   if (mMessageManager) {
michael@0:     mMessageManager->Disconnect();
michael@0:   }
michael@0:   nsFrameLoader::Destroy();
michael@0: }
michael@0: 
michael@0: nsFrameLoader*
michael@0: nsFrameLoader::Create(Element* aOwner, bool aNetworkCreated)
michael@0: {
michael@0:   NS_ENSURE_TRUE(aOwner, nullptr);
michael@0:   nsIDocument* doc = aOwner->OwnerDoc();
michael@0:   NS_ENSURE_TRUE(!doc->IsResourceDoc() &&
michael@0:                  ((!doc->IsLoadedAsData() && aOwner->GetCurrentDoc()) ||
michael@0:                    doc->IsStaticDocument()),
michael@0:                  nullptr);
michael@0: 
michael@0:   return new nsFrameLoader(aOwner, aNetworkCreated);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::LoadFrame()
michael@0: {
michael@0:   NS_ENSURE_TRUE(mOwnerContent, NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:   nsAutoString src;
michael@0: 
michael@0:   bool isSrcdoc = mOwnerContent->IsHTML(nsGkAtoms::iframe) &&
michael@0:                   mOwnerContent->HasAttr(kNameSpaceID_None, nsGkAtoms::srcdoc);
michael@0:   if (isSrcdoc) {
michael@0:     src.AssignLiteral("about:srcdoc");
michael@0:   }
michael@0:   else {
michael@0:     GetURL(src);
michael@0: 
michael@0:     src.Trim(" \t\n\r");
michael@0: 
michael@0:     if (src.IsEmpty()) {
michael@0:       // If the frame is a XUL element and has the attribute 'nodefaultsrc=true'
michael@0:       // then we will not use 'about:blank' as fallback but return early without
michael@0:       // starting a load if no 'src' attribute is given (or it's empty).
michael@0:       if (mOwnerContent->IsXUL() &&
michael@0:           mOwnerContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::nodefaultsrc,
michael@0:                                      nsGkAtoms::_true, eCaseMatters)) {
michael@0:         return NS_OK;
michael@0:       }
michael@0:       src.AssignLiteral("about:blank");
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   nsIDocument* doc = mOwnerContent->OwnerDoc();
michael@0:   if (doc->IsStaticDocument()) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIURI> base_uri = mOwnerContent->GetBaseURI();
michael@0:   const nsAFlatCString &doc_charset = doc->GetDocumentCharacterSet();
michael@0:   const char *charset = doc_charset.IsEmpty() ? nullptr : doc_charset.get();
michael@0: 
michael@0:   nsCOMPtr<nsIURI> uri;
michael@0:   nsresult rv = NS_NewURI(getter_AddRefs(uri), src, charset, base_uri);
michael@0: 
michael@0:   // If the URI was malformed, try to recover by loading about:blank.
michael@0:   if (rv == NS_ERROR_MALFORMED_URI) {
michael@0:     rv = NS_NewURI(getter_AddRefs(uri), NS_LITERAL_STRING("about:blank"),
michael@0:                    charset, base_uri);
michael@0:   }
michael@0: 
michael@0:   if (NS_SUCCEEDED(rv)) {
michael@0:     rv = LoadURI(uri);
michael@0:   }
michael@0:   
michael@0:   if (NS_FAILED(rv)) {
michael@0:     FireErrorEvent();
michael@0: 
michael@0:     return rv;
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::FireErrorEvent()
michael@0: {
michael@0:   if (!mOwnerContent) {
michael@0:     return;
michael@0:   }
michael@0:   nsRefPtr<AsyncEventDispatcher > loadBlockingAsyncDispatcher =
michael@0:     new LoadBlockingAsyncEventDispatcher(mOwnerContent,
michael@0:                                          NS_LITERAL_STRING("error"),
michael@0:                                          false, false);
michael@0:   loadBlockingAsyncDispatcher->PostDOMEvent();
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::LoadURI(nsIURI* aURI)
michael@0: {
michael@0:   if (!aURI)
michael@0:     return NS_ERROR_INVALID_POINTER;
michael@0:   NS_ENSURE_STATE(!mDestroyCalled && mOwnerContent);
michael@0: 
michael@0:   nsCOMPtr<nsIDocument> doc = mOwnerContent->OwnerDoc();
michael@0: 
michael@0:   nsresult rv = CheckURILoad(aURI);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   mURIToLoad = aURI;
michael@0:   rv = doc->InitializeFrameLoader(this);
michael@0:   if (NS_FAILED(rv)) {
michael@0:     mURIToLoad = nullptr;
michael@0:   }
michael@0:   return rv;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::ReallyStartLoading()
michael@0: {
michael@0:   nsresult rv = ReallyStartLoadingInternal();
michael@0:   if (NS_FAILED(rv)) {
michael@0:     FireErrorEvent();
michael@0:   }
michael@0:   
michael@0:   return rv;
michael@0: }
michael@0: 
michael@0: class DelayedStartLoadingRunnable : public nsRunnable
michael@0: {
michael@0: public:
michael@0:   DelayedStartLoadingRunnable(nsFrameLoader* aFrameLoader)
michael@0:     : mFrameLoader(aFrameLoader)
michael@0:   {
michael@0:   }
michael@0: 
michael@0:   NS_IMETHOD Run()
michael@0:   {
michael@0:     // Retry the request.
michael@0:     mFrameLoader->ReallyStartLoading();
michael@0: 
michael@0:     // We delayed nsFrameLoader::ReallyStartLoading() after the child process is
michael@0:     // ready and might not be able to notify the remote browser in
michael@0:     // UpdatePositionAndSize() when reflow finished. Retrigger reflow.
michael@0:     nsIFrame* frame = mFrameLoader->GetPrimaryFrameOfOwningContent();
michael@0:     if (!frame) {
michael@0:       return NS_OK;
michael@0:     }
michael@0:     frame->InvalidateFrame();
michael@0:     frame->PresContext()->PresShell()->
michael@0:       FrameNeedsReflow(frame, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
michael@0: 
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   nsRefPtr<nsFrameLoader> mFrameLoader;
michael@0: };
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::ReallyStartLoadingInternal()
michael@0: {
michael@0:   NS_ENSURE_STATE(mURIToLoad && mOwnerContent && mOwnerContent->IsInDoc());
michael@0: 
michael@0:   PROFILER_LABEL("nsFrameLoader", "ReallyStartLoading");
michael@0: 
michael@0:   nsresult rv = MaybeCreateDocShell();
michael@0:   if (NS_FAILED(rv)) {
michael@0:     return rv;
michael@0:   }
michael@0: 
michael@0:   if (mRemoteFrame) {
michael@0:     if (!mRemoteBrowser) {
michael@0:       if (!mPendingFrameSent) {
michael@0:         nsCOMPtr<nsIObserverService> os = services::GetObserverService();
michael@0:         if (os && !mRemoteBrowserInitialized) {
michael@0:           os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, this),
michael@0:                               "remote-browser-pending", nullptr);
michael@0:           mPendingFrameSent = true;
michael@0:         }
michael@0:       }
michael@0:       if (Preferences::GetBool("dom.ipc.processPrelaunch.enabled", false) &&
michael@0:           !ContentParent::PreallocatedProcessReady()) {
michael@0: 
michael@0:         ContentParent::RunAfterPreallocatedProcessReady(
michael@0:             new DelayedStartLoadingRunnable(this));
michael@0:         return NS_ERROR_FAILURE;
michael@0:       }
michael@0: 
michael@0:       TryRemoteBrowser();
michael@0: 
michael@0:       if (!mRemoteBrowser) {
michael@0:         NS_WARNING("Couldn't create child process for iframe.");
michael@0:         return NS_ERROR_FAILURE;
michael@0:       }
michael@0:     }
michael@0: 
michael@0:     if (mRemoteBrowserShown || ShowRemoteFrame(nsIntSize(0, 0))) {
michael@0:       // FIXME get error codes from child
michael@0:       mRemoteBrowser->LoadURL(mURIToLoad);
michael@0:     } else {
michael@0:       NS_WARNING("[nsFrameLoader] ReallyStartLoadingInternal tried but couldn't show remote browser.\n");
michael@0:     }
michael@0: 
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   NS_ASSERTION(mDocShell,
michael@0:                "MaybeCreateDocShell succeeded with a null mDocShell");
michael@0: 
michael@0:   // Just to be safe, recheck uri.
michael@0:   rv = CheckURILoad(mURIToLoad);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
michael@0:   mDocShell->CreateLoadInfo(getter_AddRefs(loadInfo));
michael@0:   NS_ENSURE_TRUE(loadInfo, NS_ERROR_FAILURE);
michael@0: 
michael@0:   // If this frame is sandboxed with respect to origin we will set it up with
michael@0:   // a null principal later in nsDocShell::DoURILoad.
michael@0:   // We do it there to correctly sandbox content that was loaded into
michael@0:   // the frame via other methods than the src attribute.
michael@0:   // We'll use our principal, not that of the document loaded inside us.  This
michael@0:   // is very important; needed to prevent XSS attacks on documents loaded in
michael@0:   // subframes!
michael@0:   loadInfo->SetOwner(mOwnerContent->NodePrincipal());
michael@0: 
michael@0:   nsCOMPtr<nsIURI> referrer;
michael@0:   
michael@0:   nsAutoString srcdoc;
michael@0:   bool isSrcdoc = mOwnerContent->IsHTML(nsGkAtoms::iframe) &&
michael@0:                   mOwnerContent->GetAttr(kNameSpaceID_None, nsGkAtoms::srcdoc,
michael@0:                                          srcdoc);
michael@0: 
michael@0:   if (isSrcdoc) {
michael@0:     nsAutoString referrerStr;
michael@0:     mOwnerContent->OwnerDoc()->GetReferrer(referrerStr);
michael@0:     rv = NS_NewURI(getter_AddRefs(referrer), referrerStr);
michael@0: 
michael@0:     loadInfo->SetSrcdocData(srcdoc);
michael@0:     nsCOMPtr<nsIURI> baseURI = mOwnerContent->GetBaseURI();
michael@0:     loadInfo->SetBaseURI(baseURI);
michael@0:   }
michael@0:   else {
michael@0:     rv = mOwnerContent->NodePrincipal()->GetURI(getter_AddRefs(referrer));
michael@0:     NS_ENSURE_SUCCESS(rv, rv);
michael@0:   }
michael@0: 
michael@0:   // Use referrer as long as it is not an nsNullPrincipalURI.
michael@0:   // We could add a method such as GetReferrerURI to principals to make this
michael@0:   // cleaner, but given that we need to start using Source Browsing Context for
michael@0:   // referrer (see Bug 960639) this may be wasted effort at this stage.
michael@0:   if (referrer) {
michael@0:     bool isNullPrincipalScheme;
michael@0:     rv = referrer->SchemeIs(NS_NULLPRINCIPAL_SCHEME, &isNullPrincipalScheme);
michael@0:     if (NS_SUCCEEDED(rv) && !isNullPrincipalScheme) {
michael@0:       loadInfo->SetReferrer(referrer);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   // Default flags:
michael@0:   int32_t flags = nsIWebNavigation::LOAD_FLAGS_NONE;
michael@0: 
michael@0:   // Flags for browser frame:
michael@0:   if (OwnerIsBrowserFrame()) {
michael@0:     flags = nsIWebNavigation::LOAD_FLAGS_ALLOW_THIRD_PARTY_FIXUP |
michael@0:             nsIWebNavigation::LOAD_FLAGS_DISALLOW_INHERIT_OWNER;
michael@0:   }
michael@0: 
michael@0:   // Kick off the load...
michael@0:   bool tmpState = mNeedsAsyncDestroy;
michael@0:   mNeedsAsyncDestroy = true;
michael@0:   nsCOMPtr<nsIURI> uriToLoad = mURIToLoad;
michael@0:   rv = mDocShell->LoadURI(uriToLoad, loadInfo, flags, false);
michael@0:   mNeedsAsyncDestroy = tmpState;
michael@0:   mURIToLoad = nullptr;
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::CheckURILoad(nsIURI* aURI)
michael@0: {
michael@0:   // Check for security.  The fun part is trying to figure out what principals
michael@0:   // to use.  The way I figure it, if we're doing a LoadFrame() accidentally
michael@0:   // (eg someone created a frame/iframe node, we're being parsed, XUL iframes
michael@0:   // are being reframed, etc.) then we definitely want to use the node
michael@0:   // principal of mOwnerContent for security checks.  If, on the other hand,
michael@0:   // someone's setting the src on our owner content, or created it via script,
michael@0:   // or whatever, then they can clearly access it... and we should still use
michael@0:   // the principal of mOwnerContent.  I don't think that leads to privilege
michael@0:   // escalation, and it's reasonably guaranteed to not lead to XSS issues
michael@0:   // (since caller can already access mOwnerContent in this case).  So just use
michael@0:   // the principal of mOwnerContent no matter what.  If script wants to run
michael@0:   // things with its own permissions, which differ from those of mOwnerContent
michael@0:   // (which means the script is privileged in some way) it should set
michael@0:   // window.location instead.
michael@0:   nsIScriptSecurityManager *secMan = nsContentUtils::GetSecurityManager();
michael@0: 
michael@0:   // Get our principal
michael@0:   nsIPrincipal* principal = mOwnerContent->NodePrincipal();
michael@0: 
michael@0:   // Check if we are allowed to load absURL
michael@0:   nsresult rv =
michael@0:     secMan->CheckLoadURIWithPrincipal(principal, aURI,
michael@0:                                       nsIScriptSecurityManager::STANDARD);
michael@0:   if (NS_FAILED(rv)) {
michael@0:     return rv; // We're not
michael@0:   }
michael@0: 
michael@0:   // Bail out if this is an infinite recursion scenario
michael@0:   rv = MaybeCreateDocShell();
michael@0:   if (NS_FAILED(rv)) {
michael@0:     return rv;
michael@0:   }
michael@0:   if (mRemoteFrame) {
michael@0:     return NS_OK;
michael@0:   }
michael@0:   return CheckForRecursiveLoad(aURI);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetDocShell(nsIDocShell **aDocShell)
michael@0: {
michael@0:   *aDocShell = nullptr;
michael@0:   nsresult rv = NS_OK;
michael@0: 
michael@0:   // If we have an owner, make sure we have a docshell and return
michael@0:   // that. If not, we're most likely in the middle of being torn down,
michael@0:   // then we just return null.
michael@0:   if (mOwnerContent) {
michael@0:     nsresult rv = MaybeCreateDocShell();
michael@0:     if (NS_FAILED(rv))
michael@0:       return rv;
michael@0:     if (mRemoteFrame) {
michael@0:       NS_WARNING("No docshells for remote frames!");
michael@0:       return rv;
michael@0:     }
michael@0:     NS_ASSERTION(mDocShell,
michael@0:                  "MaybeCreateDocShell succeeded, but null mDocShell");
michael@0:   }
michael@0: 
michael@0:   *aDocShell = mDocShell;
michael@0:   NS_IF_ADDREF(*aDocShell);
michael@0: 
michael@0:   return rv;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::Finalize()
michael@0: {
michael@0:   nsCOMPtr<nsIBaseWindow> base_win(do_QueryInterface(mDocShell));
michael@0:   if (base_win) {
michael@0:     base_win->Destroy();
michael@0:   }
michael@0:   mDocShell = nullptr;
michael@0: }
michael@0: 
michael@0: static void
michael@0: FirePageHideEvent(nsIDocShellTreeItem* aItem,
michael@0:                   EventTarget* aChromeEventHandler)
michael@0: {
michael@0:   nsCOMPtr<nsIDocument> internalDoc = do_GetInterface(aItem);
michael@0:   NS_ASSERTION(internalDoc, "What happened here?");
michael@0:   internalDoc->OnPageHide(true, aChromeEventHandler);
michael@0: 
michael@0:   int32_t childCount = 0;
michael@0:   aItem->GetChildCount(&childCount);
michael@0:   nsAutoTArray<nsCOMPtr<nsIDocShellTreeItem>, 8> kids;
michael@0:   kids.AppendElements(childCount);
michael@0:   for (int32_t i = 0; i < childCount; ++i) {
michael@0:     aItem->GetChildAt(i, getter_AddRefs(kids[i]));
michael@0:   }
michael@0: 
michael@0:   for (uint32_t i = 0; i < kids.Length(); ++i) {
michael@0:     if (kids[i]) {
michael@0:       FirePageHideEvent(kids[i], aChromeEventHandler);
michael@0:     }
michael@0:   }
michael@0: }
michael@0: 
michael@0: // The pageshow event is fired for a given document only if IsShowing() returns
michael@0: // the same thing as aFireIfShowing.  This gives us a way to fire pageshow only
michael@0: // on documents that are still loading or only on documents that are already
michael@0: // loaded.
michael@0: static void
michael@0: FirePageShowEvent(nsIDocShellTreeItem* aItem,
michael@0:                   EventTarget* aChromeEventHandler,
michael@0:                   bool aFireIfShowing)
michael@0: {
michael@0:   int32_t childCount = 0;
michael@0:   aItem->GetChildCount(&childCount);
michael@0:   nsAutoTArray<nsCOMPtr<nsIDocShellTreeItem>, 8> kids;
michael@0:   kids.AppendElements(childCount);
michael@0:   for (int32_t i = 0; i < childCount; ++i) {
michael@0:     aItem->GetChildAt(i, getter_AddRefs(kids[i]));
michael@0:   }
michael@0: 
michael@0:   for (uint32_t i = 0; i < kids.Length(); ++i) {
michael@0:     if (kids[i]) {
michael@0:       FirePageShowEvent(kids[i], aChromeEventHandler, aFireIfShowing);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocument> internalDoc = do_GetInterface(aItem);
michael@0:   NS_ASSERTION(internalDoc, "What happened here?");
michael@0:   if (internalDoc->IsShowing() == aFireIfShowing) {
michael@0:     internalDoc->OnPageShow(true, aChromeEventHandler);
michael@0:   }
michael@0: }
michael@0: 
michael@0: static void
michael@0: SetTreeOwnerAndChromeEventHandlerOnDocshellTree(nsIDocShellTreeItem* aItem,
michael@0:                                                 nsIDocShellTreeOwner* aOwner,
michael@0:                                                 EventTarget* aHandler)
michael@0: {
michael@0:   NS_PRECONDITION(aItem, "Must have item");
michael@0: 
michael@0:   aItem->SetTreeOwner(aOwner);
michael@0: 
michael@0:   int32_t childCount = 0;
michael@0:   aItem->GetChildCount(&childCount);
michael@0:   for (int32_t i = 0; i < childCount; ++i) {
michael@0:     nsCOMPtr<nsIDocShellTreeItem> item;
michael@0:     aItem->GetChildAt(i, getter_AddRefs(item));
michael@0:     if (aHandler) {
michael@0:       nsCOMPtr<nsIDocShell> shell(do_QueryInterface(item));
michael@0:       shell->SetChromeEventHandler(aHandler);
michael@0:     }
michael@0:     SetTreeOwnerAndChromeEventHandlerOnDocshellTree(item, aOwner, aHandler);
michael@0:   }
michael@0: }
michael@0: 
michael@0: /**
michael@0:  * Set the type of the treeitem and hook it up to the treeowner.
michael@0:  * @param aItem the treeitem we're working with
michael@0:  * @param aTreeOwner the relevant treeowner; might be null
michael@0:  * @param aParentType the nsIDocShellTreeItem::GetType of our parent docshell
michael@0:  * @param aParentNode if non-null, the docshell we should be added as a child to
michael@0:  *
michael@0:  * @return whether aItem is top-level content
michael@0:  */
michael@0: bool
michael@0: nsFrameLoader::AddTreeItemToTreeOwner(nsIDocShellTreeItem* aItem,
michael@0:                                       nsIDocShellTreeOwner* aOwner,
michael@0:                                       int32_t aParentType,
michael@0:                                       nsIDocShell* aParentNode)
michael@0: {
michael@0:   NS_PRECONDITION(aItem, "Must have docshell treeitem");
michael@0:   NS_PRECONDITION(mOwnerContent, "Must have owning content");
michael@0:   
michael@0:   nsAutoString value;
michael@0:   bool isContent = false;
michael@0:   mOwnerContent->GetAttr(kNameSpaceID_None, TypeAttrName(), value);
michael@0: 
michael@0:   // we accept "content" and "content-xxx" values.
michael@0:   // at time of writing, we expect "xxx" to be "primary" or "targetable", but
michael@0:   // someday it might be an integer expressing priority or something else.
michael@0: 
michael@0:   isContent = value.LowerCaseEqualsLiteral("content") ||
michael@0:     StringBeginsWith(value, NS_LITERAL_STRING("content-"),
michael@0:                      nsCaseInsensitiveStringComparator());
michael@0: 
michael@0:   // Force mozbrowser frames to always be typeContent, even if the
michael@0:   // mozbrowser interfaces are disabled.
michael@0:   nsCOMPtr<nsIDOMMozBrowserFrame> mozbrowser =
michael@0:     do_QueryInterface(mOwnerContent);
michael@0:   if (mozbrowser) {
michael@0:     bool isMozbrowser = false;
michael@0:     mozbrowser->GetMozbrowser(&isMozbrowser);
michael@0:     isContent |= isMozbrowser;
michael@0:   }
michael@0: 
michael@0:   if (isContent) {
michael@0:     // The web shell's type is content.
michael@0: 
michael@0:     aItem->SetItemType(nsIDocShellTreeItem::typeContent);
michael@0:   } else {
michael@0:     // Inherit our type from our parent docshell.  If it is
michael@0:     // chrome, we'll be chrome.  If it is content, we'll be
michael@0:     // content.
michael@0: 
michael@0:     aItem->SetItemType(aParentType);
michael@0:   }
michael@0: 
michael@0:   // Now that we have our type set, add ourselves to the parent, as needed.
michael@0:   if (aParentNode) {
michael@0:     aParentNode->AddChild(aItem);
michael@0:   }
michael@0: 
michael@0:   bool retval = false;
michael@0:   if (aParentType == nsIDocShellTreeItem::typeChrome && isContent) {
michael@0:     retval = true;
michael@0: 
michael@0:     bool is_primary = value.LowerCaseEqualsLiteral("content-primary");
michael@0: 
michael@0:     if (aOwner) {
michael@0:       bool is_targetable = is_primary ||
michael@0:         value.LowerCaseEqualsLiteral("content-targetable");
michael@0:       mOwnerContent->AddMutationObserver(this);
michael@0:       mObservingOwnerContent = true;
michael@0:       aOwner->ContentShellAdded(aItem, is_primary, is_targetable, value);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return retval;
michael@0: }
michael@0: 
michael@0: static bool
michael@0: AllDescendantsOfType(nsIDocShellTreeItem* aParentItem, int32_t aType)
michael@0: {
michael@0:   int32_t childCount = 0;
michael@0:   aParentItem->GetChildCount(&childCount);
michael@0: 
michael@0:   for (int32_t i = 0; i < childCount; ++i) {
michael@0:     nsCOMPtr<nsIDocShellTreeItem> kid;
michael@0:     aParentItem->GetChildAt(i, getter_AddRefs(kid));
michael@0: 
michael@0:     if (kid->ItemType() != aType || !AllDescendantsOfType(kid, aType)) {
michael@0:       return false;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: /**
michael@0:  * A class that automatically sets mInShow to false when it goes
michael@0:  * out of scope.
michael@0:  */
michael@0: class MOZ_STACK_CLASS AutoResetInShow {
michael@0:   private:
michael@0:     nsFrameLoader* mFrameLoader;
michael@0:     MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
michael@0:   public:
michael@0:     AutoResetInShow(nsFrameLoader* aFrameLoader MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
michael@0:       : mFrameLoader(aFrameLoader)
michael@0:     {
michael@0:       MOZ_GUARD_OBJECT_NOTIFIER_INIT;
michael@0:     }
michael@0:     ~AutoResetInShow() { mFrameLoader->mInShow = false; }
michael@0: };
michael@0: 
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::Show(int32_t marginWidth, int32_t marginHeight,
michael@0:                     int32_t scrollbarPrefX, int32_t scrollbarPrefY,
michael@0:                     nsSubDocumentFrame* frame)
michael@0: {
michael@0:   if (mInShow) {
michael@0:     return false;
michael@0:   }
michael@0:   // Reset mInShow if we exit early.
michael@0:   AutoResetInShow resetInShow(this);
michael@0:   mInShow = true;
michael@0: 
michael@0:   nsresult rv = MaybeCreateDocShell();
michael@0:   if (NS_FAILED(rv)) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   if (!mRemoteFrame) {
michael@0:     if (!mDocShell)
michael@0:       return false;
michael@0: 
michael@0:     mDocShell->SetMarginWidth(marginWidth);
michael@0:     mDocShell->SetMarginHeight(marginHeight);
michael@0: 
michael@0:     nsCOMPtr<nsIScrollable> sc = do_QueryInterface(mDocShell);
michael@0:     if (sc) {
michael@0:       sc->SetDefaultScrollbarPreferences(nsIScrollable::ScrollOrientation_X,
michael@0:                                          scrollbarPrefX);
michael@0:       sc->SetDefaultScrollbarPreferences(nsIScrollable::ScrollOrientation_Y,
michael@0:                                          scrollbarPrefY);
michael@0:     }
michael@0: 
michael@0:     nsCOMPtr<nsIPresShell> presShell = mDocShell->GetPresShell();
michael@0:     if (presShell) {
michael@0:       // Ensure root scroll frame is reflowed in case scroll preferences or
michael@0:       // margins have changed
michael@0:       nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame();
michael@0:       if (rootScrollFrame) {
michael@0:         presShell->FrameNeedsReflow(rootScrollFrame, nsIPresShell::eResize,
michael@0:                                     NS_FRAME_IS_DIRTY);
michael@0:       }
michael@0:       return true;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   nsIntSize size = frame->GetSubdocumentSize();
michael@0:   if (mRemoteFrame) {
michael@0:     return ShowRemoteFrame(size, frame);
michael@0:   }
michael@0: 
michael@0:   nsView* view = frame->EnsureInnerView();
michael@0:   if (!view)
michael@0:     return false;
michael@0: 
michael@0:   nsCOMPtr<nsIBaseWindow> baseWindow = do_QueryInterface(mDocShell);
michael@0:   NS_ASSERTION(baseWindow, "Found a nsIDocShell that isn't a nsIBaseWindow.");
michael@0:   baseWindow->InitWindow(nullptr, view->GetWidget(), 0, 0,
michael@0:                          size.width, size.height);
michael@0:   // This is kinda whacky, this "Create()" call doesn't really
michael@0:   // create anything, one starts to wonder why this was named
michael@0:   // "Create"...
michael@0:   baseWindow->Create();
michael@0:   baseWindow->SetVisibility(true);
michael@0:   NS_ENSURE_TRUE(mDocShell, false);
michael@0: 
michael@0:   // Trigger editor re-initialization if midas is turned on in the
michael@0:   // sub-document. This shouldn't be necessary, but given the way our
michael@0:   // editor works, it is. See
michael@0:   // https://bugzilla.mozilla.org/show_bug.cgi?id=284245
michael@0:   nsCOMPtr<nsIPresShell> presShell = mDocShell->GetPresShell();
michael@0:   if (presShell) {
michael@0:     nsCOMPtr<nsIDOMHTMLDocument> doc =
michael@0:       do_QueryInterface(presShell->GetDocument());
michael@0: 
michael@0:     if (doc) {
michael@0:       nsAutoString designMode;
michael@0:       doc->GetDesignMode(designMode);
michael@0: 
michael@0:       if (designMode.EqualsLiteral("on")) {
michael@0:         // Hold on to the editor object to let the document reattach to the
michael@0:         // same editor object, instead of creating a new one.
michael@0:         nsCOMPtr<nsIEditor> editor;
michael@0:         nsresult rv = mDocShell->GetEditor(getter_AddRefs(editor));
michael@0:         NS_ENSURE_SUCCESS(rv, false);
michael@0: 
michael@0:         doc->SetDesignMode(NS_LITERAL_STRING("off"));
michael@0:         doc->SetDesignMode(NS_LITERAL_STRING("on"));
michael@0:       } else {
michael@0:         // Re-initialize the presentation for contenteditable documents
michael@0:         bool editable = false,
michael@0:              hasEditingSession = false;
michael@0:         mDocShell->GetEditable(&editable);
michael@0:         mDocShell->GetHasEditingSession(&hasEditingSession);
michael@0:         nsCOMPtr<nsIEditor> editor;
michael@0:         mDocShell->GetEditor(getter_AddRefs(editor));
michael@0:         if (editable && hasEditingSession && editor) {
michael@0:           editor->PostCreate();
michael@0:         }
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   mInShow = false;
michael@0:   if (mHideCalled) {
michael@0:     mHideCalled = false;
michael@0:     Hide();
michael@0:     return false;
michael@0:   }
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::MarginsChanged(uint32_t aMarginWidth,
michael@0:                               uint32_t aMarginHeight)
michael@0: {
michael@0:   // We assume that the margins are always zero for remote frames.
michael@0:   if (mRemoteFrame)
michael@0:     return;
michael@0: 
michael@0:   // If there's no docshell, we're probably not up and running yet.
michael@0:   // nsFrameLoader::Show() will take care of setting the right
michael@0:   // margins.
michael@0:   if (!mDocShell)
michael@0:     return;
michael@0: 
michael@0:   // Set the margins
michael@0:   mDocShell->SetMarginWidth(aMarginWidth);
michael@0:   mDocShell->SetMarginHeight(aMarginHeight);
michael@0: 
michael@0:   // Trigger a restyle if there's a prescontext
michael@0:   nsRefPtr<nsPresContext> presContext;
michael@0:   mDocShell->GetPresContext(getter_AddRefs(presContext));
michael@0:   if (presContext)
michael@0:     presContext->RebuildAllStyleData(nsChangeHint(0));
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::ShowRemoteFrame(const nsIntSize& size,
michael@0:                                nsSubDocumentFrame *aFrame)
michael@0: {
michael@0:   NS_ASSERTION(mRemoteFrame, "ShowRemote only makes sense on remote frames.");
michael@0: 
michael@0:   if (!mRemoteBrowser) {
michael@0:     TryRemoteBrowser();
michael@0: 
michael@0:     if (!mRemoteBrowser) {
michael@0:       NS_ERROR("Couldn't create child process.");
michael@0:       return false;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   // FIXME/bug 589337: Show()/Hide() is pretty expensive for
michael@0:   // cross-process layers; need to figure out what behavior we really
michael@0:   // want here.  For now, hack.
michael@0:   if (!mRemoteBrowserShown) {
michael@0:     if (!mOwnerContent ||
michael@0:         !mOwnerContent->GetCurrentDoc()) {
michael@0:       return false;
michael@0:     }
michael@0: 
michael@0:     nsRefPtr<layers::LayerManager> layerManager =
michael@0:       nsContentUtils::LayerManagerForDocument(mOwnerContent->GetCurrentDoc());
michael@0:     if (!layerManager) {
michael@0:       // This is just not going to work.
michael@0:       return false;
michael@0:     }
michael@0: 
michael@0:     mRemoteBrowser->Show(size);
michael@0:     mRemoteBrowserShown = true;
michael@0: 
michael@0:     EnsureMessageManager();
michael@0: 
michael@0:     nsCOMPtr<nsIObserverService> os = services::GetObserverService();
michael@0:     if (os && !mRemoteBrowserInitialized) {
michael@0:       if (!mPendingFrameSent) {
michael@0:         os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, this),
michael@0:                             "remote-browser-pending", nullptr);
michael@0:         mPendingFrameSent = true;
michael@0:       }
michael@0:       os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, this),
michael@0:                           "remote-browser-shown", nullptr);
michael@0:       mRemoteBrowserInitialized = true;
michael@0:     }
michael@0:   } else {
michael@0:     nsRect dimensions;
michael@0:     NS_ENSURE_SUCCESS(GetWindowDimensions(dimensions), false);
michael@0: 
michael@0:     // Don't show remote iframe if we are waiting for the completion of reflow.
michael@0:     if (!aFrame || !(aFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
michael@0:       mRemoteBrowser->UpdateDimensions(dimensions, size);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::Hide()
michael@0: {
michael@0:   if (mHideCalled) {
michael@0:     return;
michael@0:   }
michael@0:   if (mInShow) {
michael@0:     mHideCalled = true;
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (!mDocShell)
michael@0:     return;
michael@0: 
michael@0:   nsCOMPtr<nsIContentViewer> contentViewer;
michael@0:   mDocShell->GetContentViewer(getter_AddRefs(contentViewer));
michael@0:   if (contentViewer)
michael@0:     contentViewer->SetSticky(false);
michael@0: 
michael@0:   nsCOMPtr<nsIBaseWindow> baseWin = do_QueryInterface(mDocShell);
michael@0:   NS_ASSERTION(baseWin,
michael@0:                "Found an nsIDocShell which doesn't implement nsIBaseWindow.");
michael@0:   baseWin->SetVisibility(false);
michael@0:   baseWin->SetParentWidget(nullptr);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::SwapWithOtherLoader(nsFrameLoader* aOther,
michael@0:                                    nsRefPtr<nsFrameLoader>& aFirstToSwap,
michael@0:                                    nsRefPtr<nsFrameLoader>& aSecondToSwap)
michael@0: {
michael@0:   NS_PRECONDITION((aFirstToSwap == this && aSecondToSwap == aOther) ||
michael@0:                   (aFirstToSwap == aOther && aSecondToSwap == this),
michael@0:                   "Swapping some sort of random loaders?");
michael@0:   NS_ENSURE_STATE(!mInShow && !aOther->mInShow);
michael@0: 
michael@0:   Element* ourContent = mOwnerContent;
michael@0:   Element* otherContent = aOther->mOwnerContent;
michael@0: 
michael@0:   if (!ourContent || !otherContent) {
michael@0:     // Can't handle this
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   // Make sure there are no same-origin issues
michael@0:   bool equal;
michael@0:   nsresult rv =
michael@0:     ourContent->NodePrincipal()->Equals(otherContent->NodePrincipal(), &equal);
michael@0:   if (NS_FAILED(rv) || !equal) {
michael@0:     // Security problems loom.  Just bail on it all
michael@0:     return NS_ERROR_DOM_SECURITY_ERR;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocShell> ourDocshell = GetExistingDocShell();
michael@0:   nsCOMPtr<nsIDocShell> otherDocshell = aOther->GetExistingDocShell();
michael@0:   if (!ourDocshell || !otherDocshell) {
michael@0:     // How odd
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   // To avoid having to mess with session history, avoid swapping
michael@0:   // frameloaders that don't correspond to root same-type docshells,
michael@0:   // unless both roots have session history disabled.
michael@0:   nsCOMPtr<nsIDocShellTreeItem> ourRootTreeItem, otherRootTreeItem;
michael@0:   ourDocshell->GetSameTypeRootTreeItem(getter_AddRefs(ourRootTreeItem));
michael@0:   otherDocshell->GetSameTypeRootTreeItem(getter_AddRefs(otherRootTreeItem));
michael@0:   nsCOMPtr<nsIWebNavigation> ourRootWebnav =
michael@0:     do_QueryInterface(ourRootTreeItem);
michael@0:   nsCOMPtr<nsIWebNavigation> otherRootWebnav =
michael@0:     do_QueryInterface(otherRootTreeItem);
michael@0: 
michael@0:   if (!ourRootWebnav || !otherRootWebnav) {
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsISHistory> ourHistory;
michael@0:   nsCOMPtr<nsISHistory> otherHistory;
michael@0:   ourRootWebnav->GetSessionHistory(getter_AddRefs(ourHistory));
michael@0:   otherRootWebnav->GetSessionHistory(getter_AddRefs(otherHistory));
michael@0: 
michael@0:   if ((ourRootTreeItem != ourDocshell || otherRootTreeItem != otherDocshell) &&
michael@0:       (ourHistory || otherHistory)) {
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   // Also make sure that the two docshells are the same type. Otherwise
michael@0:   // swapping is certainly not safe. If this needs to be changed then
michael@0:   // the code below needs to be audited as it assumes identical types.
michael@0:   int32_t ourType = ourDocshell->ItemType();
michael@0:   int32_t otherType = otherDocshell->ItemType();
michael@0:   if (ourType != otherType) {
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   // One more twist here.  Setting up the right treeowners in a heterogeneous
michael@0:   // tree is a bit of a pain.  So make sure that if ourType is not
michael@0:   // nsIDocShellTreeItem::typeContent then all of our descendants are the same
michael@0:   // type as us.
michael@0:   if (ourType != nsIDocShellTreeItem::typeContent &&
michael@0:       (!AllDescendantsOfType(ourDocshell, ourType) ||
michael@0:        !AllDescendantsOfType(otherDocshell, otherType))) {
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0:   
michael@0:   // Save off the tree owners, frame elements, chrome event handlers, and
michael@0:   // docshell and document parents before doing anything else.
michael@0:   nsCOMPtr<nsIDocShellTreeOwner> ourOwner, otherOwner;
michael@0:   ourDocshell->GetTreeOwner(getter_AddRefs(ourOwner));
michael@0:   otherDocshell->GetTreeOwner(getter_AddRefs(otherOwner));
michael@0:   // Note: it's OK to have null treeowners.
michael@0: 
michael@0:   nsCOMPtr<nsIDocShellTreeItem> ourParentItem, otherParentItem;
michael@0:   ourDocshell->GetParent(getter_AddRefs(ourParentItem));
michael@0:   otherDocshell->GetParent(getter_AddRefs(otherParentItem));
michael@0:   if (!ourParentItem || !otherParentItem) {
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   // Make sure our parents are the same type too
michael@0:   int32_t ourParentType = ourParentItem->ItemType();
michael@0:   int32_t otherParentType = otherParentItem->ItemType();
michael@0:   if (ourParentType != otherParentType) {
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsPIDOMWindow> ourWindow = do_GetInterface(ourDocshell);
michael@0:   nsCOMPtr<nsPIDOMWindow> otherWindow = do_GetInterface(otherDocshell);
michael@0: 
michael@0:   nsCOMPtr<Element> ourFrameElement =
michael@0:     ourWindow->GetFrameElementInternal();
michael@0:   nsCOMPtr<Element> otherFrameElement =
michael@0:     otherWindow->GetFrameElementInternal();
michael@0: 
michael@0:   nsCOMPtr<EventTarget> ourChromeEventHandler =
michael@0:     do_QueryInterface(ourWindow->GetChromeEventHandler());
michael@0:   nsCOMPtr<EventTarget> otherChromeEventHandler =
michael@0:     do_QueryInterface(otherWindow->GetChromeEventHandler());
michael@0: 
michael@0:   NS_ASSERTION(SameCOMIdentity(ourFrameElement, ourContent) &&
michael@0:                SameCOMIdentity(otherFrameElement, otherContent) &&
michael@0:                SameCOMIdentity(ourChromeEventHandler, ourContent) &&
michael@0:                SameCOMIdentity(otherChromeEventHandler, otherContent),
michael@0:                "How did that happen, exactly?");
michael@0: 
michael@0:   nsCOMPtr<nsIDocument> ourChildDocument = ourWindow->GetExtantDoc();
michael@0:   nsCOMPtr<nsIDocument> otherChildDocument = otherWindow ->GetExtantDoc();
michael@0:   if (!ourChildDocument || !otherChildDocument) {
michael@0:     // This shouldn't be happening
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocument> ourParentDocument =
michael@0:     ourChildDocument->GetParentDocument();
michael@0:   nsCOMPtr<nsIDocument> otherParentDocument =
michael@0:     otherChildDocument->GetParentDocument();
michael@0: 
michael@0:   // Make sure to swap docshells between the two frames.
michael@0:   nsIDocument* ourDoc = ourContent->GetCurrentDoc();
michael@0:   nsIDocument* otherDoc = otherContent->GetCurrentDoc();
michael@0:   if (!ourDoc || !otherDoc) {
michael@0:     // Again, how odd, given that we had docshells
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   NS_ASSERTION(ourDoc == ourParentDocument, "Unexpected parent document");
michael@0:   NS_ASSERTION(otherDoc == otherParentDocument, "Unexpected parent document");
michael@0: 
michael@0:   nsIPresShell* ourShell = ourDoc->GetShell();
michael@0:   nsIPresShell* otherShell = otherDoc->GetShell();
michael@0:   if (!ourShell || !otherShell) {
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   if (ourDocshell->GetIsBrowserElement() !=
michael@0:       otherDocshell->GetIsBrowserElement() ||
michael@0:       ourDocshell->GetIsApp() != otherDocshell->GetIsApp()) {
michael@0:       return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   if (mInSwap || aOther->mInSwap) {
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0:   mInSwap = aOther->mInSwap = true;
michael@0: 
michael@0:   // Fire pageshow events on still-loading pages, and then fire pagehide
michael@0:   // events.  Note that we do NOT fire these in the normal way, but just fire
michael@0:   // them on the chrome event handlers.
michael@0:   FirePageShowEvent(ourDocshell, ourChromeEventHandler, false);
michael@0:   FirePageShowEvent(otherDocshell, otherChromeEventHandler, false);
michael@0:   FirePageHideEvent(ourDocshell, ourChromeEventHandler);
michael@0:   FirePageHideEvent(otherDocshell, otherChromeEventHandler);
michael@0:   
michael@0:   nsIFrame* ourFrame = ourContent->GetPrimaryFrame();
michael@0:   nsIFrame* otherFrame = otherContent->GetPrimaryFrame();
michael@0:   if (!ourFrame || !otherFrame) {
michael@0:     mInSwap = aOther->mInSwap = false;
michael@0:     FirePageShowEvent(ourDocshell, ourChromeEventHandler, true);
michael@0:     FirePageShowEvent(otherDocshell, otherChromeEventHandler, true);
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   nsSubDocumentFrame* ourFrameFrame = do_QueryFrame(ourFrame);
michael@0:   if (!ourFrameFrame) {
michael@0:     mInSwap = aOther->mInSwap = false;
michael@0:     FirePageShowEvent(ourDocshell, ourChromeEventHandler, true);
michael@0:     FirePageShowEvent(otherDocshell, otherChromeEventHandler, true);
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0: 
michael@0:   // OK.  First begin to swap the docshells in the two nsIFrames
michael@0:   rv = ourFrameFrame->BeginSwapDocShells(otherFrame);
michael@0:   if (NS_FAILED(rv)) {
michael@0:     mInSwap = aOther->mInSwap = false;
michael@0:     FirePageShowEvent(ourDocshell, ourChromeEventHandler, true);
michael@0:     FirePageShowEvent(otherDocshell, otherChromeEventHandler, true);
michael@0:     return rv;
michael@0:   }
michael@0: 
michael@0:   // Now move the docshells to the right docshell trees.  Note that this
michael@0:   // resets their treeowners to null.
michael@0:   ourParentItem->RemoveChild(ourDocshell);
michael@0:   otherParentItem->RemoveChild(otherDocshell);
michael@0:   if (ourType == nsIDocShellTreeItem::typeContent) {
michael@0:     ourOwner->ContentShellRemoved(ourDocshell);
michael@0:     otherOwner->ContentShellRemoved(otherDocshell);
michael@0:   }
michael@0:   
michael@0:   ourParentItem->AddChild(otherDocshell);
michael@0:   otherParentItem->AddChild(ourDocshell);
michael@0: 
michael@0:   // Restore the correct chrome event handlers.
michael@0:   ourDocshell->SetChromeEventHandler(otherChromeEventHandler);
michael@0:   otherDocshell->SetChromeEventHandler(ourChromeEventHandler);
michael@0:   // Restore the correct treeowners
michael@0:   // (and also chrome event handlers for content frames only).
michael@0:   SetTreeOwnerAndChromeEventHandlerOnDocshellTree(ourDocshell, otherOwner,
michael@0:     ourType == nsIDocShellTreeItem::typeContent ? otherChromeEventHandler : nullptr);
michael@0:   SetTreeOwnerAndChromeEventHandlerOnDocshellTree(otherDocshell, ourOwner,
michael@0:     ourType == nsIDocShellTreeItem::typeContent ? ourChromeEventHandler : nullptr);
michael@0: 
michael@0:   // Switch the owner content before we start calling AddTreeItemToTreeOwner.
michael@0:   // Note that we rely on this to deal with setting mObservingOwnerContent to
michael@0:   // false and calling RemoveMutationObserver as needed.
michael@0:   SetOwnerContent(otherContent);
michael@0:   aOther->SetOwnerContent(ourContent);
michael@0: 
michael@0:   AddTreeItemToTreeOwner(ourDocshell, otherOwner, otherParentType, nullptr);
michael@0:   aOther->AddTreeItemToTreeOwner(otherDocshell, ourOwner, ourParentType,
michael@0:                                  nullptr);
michael@0: 
michael@0:   // SetSubDocumentFor nulls out parent documents on the old child doc if a
michael@0:   // new non-null document is passed in, so just go ahead and remove both
michael@0:   // kids before reinserting in the parent subdoc maps, to avoid
michael@0:   // complications.
michael@0:   ourParentDocument->SetSubDocumentFor(ourContent, nullptr);
michael@0:   otherParentDocument->SetSubDocumentFor(otherContent, nullptr);
michael@0:   ourParentDocument->SetSubDocumentFor(ourContent, otherChildDocument);
michael@0:   otherParentDocument->SetSubDocumentFor(otherContent, ourChildDocument);
michael@0: 
michael@0:   ourWindow->SetFrameElementInternal(otherFrameElement);
michael@0:   otherWindow->SetFrameElementInternal(ourFrameElement);
michael@0: 
michael@0:   nsRefPtr<nsFrameMessageManager> ourMessageManager = mMessageManager;
michael@0:   nsRefPtr<nsFrameMessageManager> otherMessageManager = aOther->mMessageManager;
michael@0:   // Swap pointers in child message managers.
michael@0:   if (mChildMessageManager) {
michael@0:     nsInProcessTabChildGlobal* tabChild =
michael@0:       static_cast<nsInProcessTabChildGlobal*>(mChildMessageManager.get());
michael@0:     tabChild->SetOwner(otherContent);
michael@0:     tabChild->SetChromeMessageManager(otherMessageManager);
michael@0:   }
michael@0:   if (aOther->mChildMessageManager) {
michael@0:     nsInProcessTabChildGlobal* otherTabChild =
michael@0:       static_cast<nsInProcessTabChildGlobal*>(aOther->mChildMessageManager.get());
michael@0:     otherTabChild->SetOwner(ourContent);
michael@0:     otherTabChild->SetChromeMessageManager(ourMessageManager);
michael@0:   }
michael@0:   // Swap and setup things in parent message managers.
michael@0:   if (mMessageManager) {
michael@0:     mMessageManager->SetCallback(aOther);
michael@0:   }
michael@0:   if (aOther->mMessageManager) {
michael@0:     aOther->mMessageManager->SetCallback(this);
michael@0:   }
michael@0:   mMessageManager.swap(aOther->mMessageManager);
michael@0: 
michael@0:   aFirstToSwap.swap(aSecondToSwap);
michael@0: 
michael@0:   // Drop any cached content viewers in the two session histories.
michael@0:   nsCOMPtr<nsISHistoryInternal> ourInternalHistory =
michael@0:     do_QueryInterface(ourHistory);
michael@0:   nsCOMPtr<nsISHistoryInternal> otherInternalHistory =
michael@0:     do_QueryInterface(otherHistory);
michael@0:   if (ourInternalHistory) {
michael@0:     ourInternalHistory->EvictAllContentViewers();
michael@0:   }
michael@0:   if (otherInternalHistory) {
michael@0:     otherInternalHistory->EvictAllContentViewers();
michael@0:   }
michael@0: 
michael@0:   NS_ASSERTION(ourFrame == ourContent->GetPrimaryFrame() &&
michael@0:                otherFrame == otherContent->GetPrimaryFrame(),
michael@0:                "changed primary frame");
michael@0: 
michael@0:   ourFrameFrame->EndSwapDocShells(otherFrame);
michael@0: 
michael@0:   // If the content being swapped came from windows on two screens with
michael@0:   // incompatible backing resolution (e.g. dragging a tab between windows on
michael@0:   // hi-dpi and low-dpi screens), it will have style data that is based on
michael@0:   // the wrong appUnitsPerDevPixel value. So we tell the PresShells that their
michael@0:   // backing scale factor may have changed. (Bug 822266)
michael@0:   ourShell->BackingScaleFactorChanged();
michael@0:   otherShell->BackingScaleFactorChanged();
michael@0: 
michael@0:   ourParentDocument->FlushPendingNotifications(Flush_Layout);
michael@0:   otherParentDocument->FlushPendingNotifications(Flush_Layout);
michael@0: 
michael@0:   FirePageShowEvent(ourDocshell, otherChromeEventHandler, true);
michael@0:   FirePageShowEvent(otherDocshell, ourChromeEventHandler, true);
michael@0: 
michael@0:   mInSwap = aOther->mInSwap = false;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::DestroyChild()
michael@0: {
michael@0:   if (mRemoteBrowser) {
michael@0:     mRemoteBrowser->SetOwnerElement(nullptr);
michael@0:     mRemoteBrowser->Destroy();
michael@0:     mRemoteBrowser = nullptr;
michael@0:   }
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::Destroy()
michael@0: {
michael@0:   if (mDestroyCalled) {
michael@0:     return NS_OK;
michael@0:   }
michael@0:   mDestroyCalled = true;
michael@0: 
michael@0:   if (mMessageManager) {
michael@0:     mMessageManager->Disconnect();
michael@0:   }
michael@0:   if (mChildMessageManager) {
michael@0:     static_cast<nsInProcessTabChildGlobal*>(mChildMessageManager.get())->Disconnect();
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocument> doc;
michael@0:   bool dynamicSubframeRemoval = false;
michael@0:   if (mOwnerContent) {
michael@0:     doc = mOwnerContent->OwnerDoc();
michael@0:     dynamicSubframeRemoval = !mIsTopLevelContent && !doc->InUnlinkOrDeletion();
michael@0:     doc->SetSubDocumentFor(mOwnerContent, nullptr);
michael@0: 
michael@0:     SetOwnerContent(nullptr);
michael@0:   }
michael@0:   DestroyChild();
michael@0: 
michael@0:   // Seems like this is a dynamic frame removal.
michael@0:   if (dynamicSubframeRemoval) {
michael@0:     if (mDocShell) {
michael@0:       mDocShell->RemoveFromSessionHistory();
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   // Let the tree owner know we're gone.
michael@0:   if (mIsTopLevelContent) {
michael@0:     if (mDocShell) {
michael@0:       nsCOMPtr<nsIDocShellTreeItem> parentItem;
michael@0:       mDocShell->GetParent(getter_AddRefs(parentItem));
michael@0:       nsCOMPtr<nsIDocShellTreeOwner> owner = do_GetInterface(parentItem);
michael@0:       if (owner) {
michael@0:         owner->ContentShellRemoved(mDocShell);
michael@0:       }
michael@0:     }
michael@0:   }
michael@0:   
michael@0:   // Let our window know that we are gone
michael@0:   nsCOMPtr<nsPIDOMWindow> win_private(do_GetInterface(mDocShell));
michael@0:   if (win_private) {
michael@0:     win_private->SetFrameElementInternal(nullptr);
michael@0:   }
michael@0: 
michael@0:   if ((mNeedsAsyncDestroy || !doc ||
michael@0:        NS_FAILED(doc->FinalizeFrameLoader(this))) && mDocShell) {
michael@0:     nsCOMPtr<nsIRunnable> event = new nsAsyncDocShellDestroyer(mDocShell);
michael@0:     NS_ENSURE_TRUE(event, NS_ERROR_OUT_OF_MEMORY);
michael@0:     NS_DispatchToCurrentThread(event);
michael@0: 
michael@0:     // Let go of our docshell now that the async destroyer holds on to
michael@0:     // the docshell.
michael@0: 
michael@0:     mDocShell = nullptr;
michael@0:   }
michael@0: 
michael@0:   // NOTE: 'this' may very well be gone by now.
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetDepthTooGreat(bool* aDepthTooGreat)
michael@0: {
michael@0:   *aDepthTooGreat = mDepthTooGreat;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::SetOwnerContent(Element* aContent)
michael@0: {
michael@0:   if (mObservingOwnerContent) {
michael@0:     mObservingOwnerContent = false;
michael@0:     mOwnerContent->RemoveMutationObserver(this);
michael@0:   }
michael@0:   mOwnerContent = aContent;
michael@0:   if (RenderFrameParent* rfp = GetCurrentRemoteFrame()) {
michael@0:     rfp->OwnerContentChanged(aContent);
michael@0:   }
michael@0: 
michael@0:   ResetPermissionManagerStatus();
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::OwnerIsBrowserOrAppFrame()
michael@0: {
michael@0:   nsCOMPtr<nsIMozBrowserFrame> browserFrame = do_QueryInterface(mOwnerContent);
michael@0:   return browserFrame ? browserFrame->GetReallyIsBrowserOrApp() : false;
michael@0: }
michael@0: 
michael@0: // The xpcom getter version
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetOwnerIsBrowserOrAppFrame(bool* aResult)
michael@0: {
michael@0:   *aResult = OwnerIsBrowserOrAppFrame();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::OwnerIsAppFrame()
michael@0: {
michael@0:   nsCOMPtr<nsIMozBrowserFrame> browserFrame = do_QueryInterface(mOwnerContent);
michael@0:   return browserFrame ? browserFrame->GetReallyIsApp() : false;
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::OwnerIsBrowserFrame()
michael@0: {
michael@0:   return OwnerIsBrowserOrAppFrame() && !OwnerIsAppFrame();
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::GetOwnerAppManifestURL(nsAString& aOut)
michael@0: {
michael@0:   aOut.Truncate();
michael@0:   nsCOMPtr<nsIMozBrowserFrame> browserFrame = do_QueryInterface(mOwnerContent);
michael@0:   if (browserFrame) {
michael@0:     browserFrame->GetAppManifestURL(aOut);
michael@0:   }
michael@0: }
michael@0: 
michael@0: already_AddRefed<mozIApplication>
michael@0: nsFrameLoader::GetOwnApp()
michael@0: {
michael@0:   nsAutoString manifest;
michael@0:   GetOwnerAppManifestURL(manifest);
michael@0:   if (manifest.IsEmpty()) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIAppsService> appsService = do_GetService(APPS_SERVICE_CONTRACTID);
michael@0:   NS_ENSURE_TRUE(appsService, nullptr);
michael@0: 
michael@0:   nsCOMPtr<mozIApplication> app;
michael@0:   appsService->GetAppByManifestURL(manifest, getter_AddRefs(app));
michael@0: 
michael@0:   return app.forget();
michael@0: }
michael@0: 
michael@0: already_AddRefed<mozIApplication>
michael@0: nsFrameLoader::GetContainingApp()
michael@0: {
michael@0:   // See if our owner content's principal has an associated app.
michael@0:   uint32_t appId = mOwnerContent->NodePrincipal()->GetAppId();
michael@0:   MOZ_ASSERT(appId != nsIScriptSecurityManager::UNKNOWN_APP_ID);
michael@0: 
michael@0:   if (appId == nsIScriptSecurityManager::NO_APP_ID ||
michael@0:       appId == nsIScriptSecurityManager::UNKNOWN_APP_ID) {
michael@0:     return nullptr;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIAppsService> appsService = do_GetService(APPS_SERVICE_CONTRACTID);
michael@0:   NS_ENSURE_TRUE(appsService, nullptr);
michael@0: 
michael@0:   nsCOMPtr<mozIApplication> app;
michael@0:   appsService->GetAppByLocalId(appId, getter_AddRefs(app));
michael@0: 
michael@0:   return app.forget();
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::ShouldUseRemoteProcess()
michael@0: {
michael@0:   if (PR_GetEnv("MOZ_DISABLE_OOP_TABS") ||
michael@0:       Preferences::GetBool("dom.ipc.tabs.disabled", false)) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   // If we're inside a content process, don't use a remote process for this
michael@0:   // frame; it won't work properly until bug 761935 is fixed.
michael@0:   if (XRE_GetProcessType() == GeckoProcessType_Content) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   // If we're an <iframe mozbrowser> and we don't have a "remote" attribute,
michael@0:   // fall back to the default.
michael@0:   if (OwnerIsBrowserOrAppFrame() &&
michael@0:       !mOwnerContent->HasAttr(kNameSpaceID_None, nsGkAtoms::Remote)) {
michael@0: 
michael@0:     return Preferences::GetBool("dom.ipc.browser_frames.oop_by_default", false);
michael@0:   }
michael@0: 
michael@0:   // Otherwise, we're remote if we have "remote=true" and we're either a
michael@0:   // browser frame or a XUL element.
michael@0:   return (OwnerIsBrowserOrAppFrame() ||
michael@0:           mOwnerContent->GetNameSpaceID() == kNameSpaceID_XUL) &&
michael@0:          mOwnerContent->AttrValueIs(kNameSpaceID_None,
michael@0:                                     nsGkAtoms::Remote,
michael@0:                                     nsGkAtoms::_true,
michael@0:                                     eCaseMatters);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::MaybeCreateDocShell()
michael@0: {
michael@0:   if (mDocShell) {
michael@0:     return NS_OK;
michael@0:   }
michael@0:   if (mRemoteFrame) {
michael@0:     return NS_OK;
michael@0:   }
michael@0:   NS_ENSURE_STATE(!mDestroyCalled);
michael@0: 
michael@0:   if (ShouldUseRemoteProcess()) {
michael@0:     mRemoteFrame = true;
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   // Get our parent docshell off the document of mOwnerContent
michael@0:   // XXXbz this is such a total hack.... We really need to have a
michael@0:   // better setup for doing this.
michael@0:   nsIDocument* doc = mOwnerContent->OwnerDoc();
michael@0:   if (!(doc->IsStaticDocument() || mOwnerContent->IsInDoc())) {
michael@0:     return NS_ERROR_UNEXPECTED;
michael@0:   }
michael@0: 
michael@0:   if (doc->IsResourceDoc() || !doc->IsActive()) {
michael@0:     // Don't allow subframe loads in resource documents, nor
michael@0:     // in non-active documents.
michael@0:     return NS_ERROR_NOT_AVAILABLE;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocShell> docShell = doc->GetDocShell();
michael@0:   nsCOMPtr<nsIWebNavigation> parentAsWebNav = do_QueryInterface(docShell);
michael@0:   NS_ENSURE_STATE(parentAsWebNav);
michael@0: 
michael@0:   // Create the docshell...
michael@0:   mDocShell = do_CreateInstance("@mozilla.org/docshell;1");
michael@0:   NS_ENSURE_TRUE(mDocShell, NS_ERROR_FAILURE);
michael@0: 
michael@0:   // Apply sandbox flags even if our owner is not an iframe, as this copies
michael@0:   // flags from our owning content's owning document.
michael@0:   uint32_t sandboxFlags = 0;
michael@0:   HTMLIFrameElement* iframe = HTMLIFrameElement::FromContent(mOwnerContent);
michael@0:   if (iframe) {
michael@0:     sandboxFlags = iframe->GetSandboxFlags();
michael@0:   }
michael@0:   ApplySandboxFlags(sandboxFlags);
michael@0: 
michael@0:   if (!mNetworkCreated) {
michael@0:     if (mDocShell) {
michael@0:       mDocShell->SetCreatedDynamically(true);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   // Get the frame name and tell the docshell about it.
michael@0:   NS_ENSURE_TRUE(mDocShell, NS_ERROR_FAILURE);
michael@0:   nsAutoString frameName;
michael@0: 
michael@0:   int32_t namespaceID = mOwnerContent->GetNameSpaceID();
michael@0:   if (namespaceID == kNameSpaceID_XHTML && !mOwnerContent->IsInHTMLDocument()) {
michael@0:     mOwnerContent->GetAttr(kNameSpaceID_None, nsGkAtoms::id, frameName);
michael@0:   } else {
michael@0:     mOwnerContent->GetAttr(kNameSpaceID_None, nsGkAtoms::name, frameName);
michael@0:     // XXX if no NAME then use ID, after a transition period this will be
michael@0:     // changed so that XUL only uses ID too (bug 254284).
michael@0:     if (frameName.IsEmpty() && namespaceID == kNameSpaceID_XUL) {
michael@0:       mOwnerContent->GetAttr(kNameSpaceID_None, nsGkAtoms::id, frameName);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   if (!frameName.IsEmpty()) {
michael@0:     mDocShell->SetName(frameName);
michael@0:   }
michael@0: 
michael@0:   // Inform our docShell that it has a new child.
michael@0:   // Note: This logic duplicates a lot of logic in
michael@0:   // nsSubDocumentFrame::AttributeChanged.  We should fix that.
michael@0: 
michael@0:   int32_t parentType = docShell->ItemType();
michael@0: 
michael@0:   // XXXbz why is this in content code, exactly?  We should handle
michael@0:   // this some other way.....  Not sure how yet.
michael@0:   nsCOMPtr<nsIDocShellTreeOwner> parentTreeOwner;
michael@0:   docShell->GetTreeOwner(getter_AddRefs(parentTreeOwner));
michael@0:   NS_ENSURE_STATE(parentTreeOwner);
michael@0:   mIsTopLevelContent =
michael@0:     AddTreeItemToTreeOwner(mDocShell, parentTreeOwner, parentType, docShell);
michael@0: 
michael@0:   // Make sure all shells have links back to the content element
michael@0:   // in the nearest enclosing chrome shell.
michael@0:   nsCOMPtr<nsIDOMEventTarget> chromeEventHandler;
michael@0: 
michael@0:   if (parentType == nsIDocShellTreeItem::typeChrome) {
michael@0:     // Our parent shell is a chrome shell. It is therefore our nearest
michael@0:     // enclosing chrome shell.
michael@0: 
michael@0:     chromeEventHandler = do_QueryInterface(mOwnerContent);
michael@0:     NS_ASSERTION(chromeEventHandler,
michael@0:                  "This mContent should implement this.");
michael@0:   } else {
michael@0:     // Our parent shell is a content shell. Get the chrome event
michael@0:     // handler from it and use that for our shell as well.
michael@0: 
michael@0:     docShell->GetChromeEventHandler(getter_AddRefs(chromeEventHandler));
michael@0:   }
michael@0: 
michael@0:   mDocShell->SetChromeEventHandler(chromeEventHandler);
michael@0: 
michael@0:   // This is nasty, this code (the do_GetInterface(mDocShell) below)
michael@0:   // *must* come *after* the above call to
michael@0:   // mDocShell->SetChromeEventHandler() for the global window to get
michael@0:   // the right chrome event handler.
michael@0: 
michael@0:   // Tell the window about the frame that hosts it.
michael@0:   nsCOMPtr<Element> frame_element = mOwnerContent;
michael@0:   NS_ASSERTION(frame_element, "frame loader owner element not a DOM element!");
michael@0: 
michael@0:   nsCOMPtr<nsPIDOMWindow> win_private(do_GetInterface(mDocShell));
michael@0:   nsCOMPtr<nsIBaseWindow> base_win(do_QueryInterface(mDocShell));
michael@0:   if (win_private) {
michael@0:     win_private->SetFrameElementInternal(frame_element);
michael@0:   }
michael@0: 
michael@0:   // This is kinda whacky, this call doesn't really create anything,
michael@0:   // but it must be called to make sure things are properly
michael@0:   // initialized.
michael@0:   if (NS_FAILED(base_win->Create()) || !win_private) {
michael@0:     // Do not call Destroy() here. See bug 472312.
michael@0:     NS_WARNING("Something wrong when creating the docshell for a frameloader!");
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   if (mIsTopLevelContent &&
michael@0:       mOwnerContent->IsXUL(nsGkAtoms::browser) &&
michael@0:       !mOwnerContent->HasAttr(kNameSpaceID_None, nsGkAtoms::disablehistory)) {
michael@0:     nsresult rv;
michael@0:     nsCOMPtr<nsISHistory> sessionHistory =
michael@0:       do_CreateInstance(NS_SHISTORY_CONTRACTID, &rv);
michael@0:     NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:     nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(mDocShell));
michael@0:     webNav->SetSessionHistory(sessionHistory);
michael@0:   }
michael@0: 
michael@0:   EnsureMessageManager();
michael@0: 
michael@0:   if (OwnerIsAppFrame()) {
michael@0:     // You can't be both an app and a browser frame.
michael@0:     MOZ_ASSERT(!OwnerIsBrowserFrame());
michael@0: 
michael@0:     nsCOMPtr<mozIApplication> ownApp = GetOwnApp();
michael@0:     MOZ_ASSERT(ownApp);
michael@0:     uint32_t ownAppId = nsIScriptSecurityManager::NO_APP_ID;
michael@0:     if (ownApp) {
michael@0:       NS_ENSURE_SUCCESS(ownApp->GetLocalId(&ownAppId), NS_ERROR_FAILURE);
michael@0:     }
michael@0: 
michael@0:     mDocShell->SetIsApp(ownAppId);
michael@0:   }
michael@0: 
michael@0:   if (OwnerIsBrowserFrame()) {
michael@0:     // You can't be both a browser and an app frame.
michael@0:     MOZ_ASSERT(!OwnerIsAppFrame());
michael@0: 
michael@0:     nsCOMPtr<mozIApplication> containingApp = GetContainingApp();
michael@0:     uint32_t containingAppId = nsIScriptSecurityManager::NO_APP_ID;
michael@0:     if (containingApp) {
michael@0:       NS_ENSURE_SUCCESS(containingApp->GetLocalId(&containingAppId),
michael@0:                         NS_ERROR_FAILURE);
michael@0:     }
michael@0:     mDocShell->SetIsBrowserInsideApp(containingAppId);
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIObserverService> os = services::GetObserverService();
michael@0:   if (os) {
michael@0:     os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, this),
michael@0:                         "inprocess-browser-shown", nullptr);
michael@0:   }
michael@0: 
michael@0:   if (OwnerIsBrowserOrAppFrame() && mMessageManager) {
michael@0:     mMessageManager->LoadFrameScript(
michael@0:       NS_LITERAL_STRING("chrome://global/content/BrowserElementChild.js"),
michael@0:       /* allowDelayedLoad = */ true,
michael@0:       /* aRunInGlobalScope */ true);
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::GetURL(nsString& aURI)
michael@0: {
michael@0:   aURI.Truncate();
michael@0: 
michael@0:   if (mOwnerContent->Tag() == nsGkAtoms::object) {
michael@0:     mOwnerContent->GetAttr(kNameSpaceID_None, nsGkAtoms::data, aURI);
michael@0:   } else {
michael@0:     mOwnerContent->GetAttr(kNameSpaceID_None, nsGkAtoms::src, aURI);
michael@0:   }
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::CheckForRecursiveLoad(nsIURI* aURI)
michael@0: {
michael@0:   nsresult rv;
michael@0: 
michael@0:   mDepthTooGreat = false;
michael@0:   rv = MaybeCreateDocShell();
michael@0:   if (NS_FAILED(rv)) {
michael@0:     return rv;
michael@0:   }
michael@0:   NS_ASSERTION(!mRemoteFrame,
michael@0:                "Shouldn't call CheckForRecursiveLoad on remote frames.");
michael@0:   if (!mDocShell) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   // Check that we're still in the docshell tree.
michael@0:   nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
michael@0:   mDocShell->GetTreeOwner(getter_AddRefs(treeOwner));
michael@0:   NS_WARN_IF_FALSE(treeOwner,
michael@0:                    "Trying to load a new url to a docshell without owner!");
michael@0:   NS_ENSURE_STATE(treeOwner);
michael@0:   
michael@0:   if (mDocShell->ItemType() != nsIDocShellTreeItem::typeContent) {
michael@0:     // No need to do recursion-protection here XXXbz why not??  Do we really
michael@0:     // trust people not to screw up with non-content docshells?
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   // Bug 8065: Don't exceed some maximum depth in content frames
michael@0:   // (MAX_DEPTH_CONTENT_FRAMES)
michael@0:   nsCOMPtr<nsIDocShellTreeItem> parentAsItem;
michael@0:   mDocShell->GetSameTypeParent(getter_AddRefs(parentAsItem));
michael@0:   int32_t depth = 0;
michael@0:   while (parentAsItem) {
michael@0:     ++depth;
michael@0:     
michael@0:     if (depth >= MAX_DEPTH_CONTENT_FRAMES) {
michael@0:       mDepthTooGreat = true;
michael@0:       NS_WARNING("Too many nested content frames so giving up");
michael@0: 
michael@0:       return NS_ERROR_UNEXPECTED; // Too deep, give up!  (silently?)
michael@0:     }
michael@0: 
michael@0:     nsCOMPtr<nsIDocShellTreeItem> temp;
michael@0:     temp.swap(parentAsItem);
michael@0:     temp->GetSameTypeParent(getter_AddRefs(parentAsItem));
michael@0:   }
michael@0: 
michael@0:   // Bug 136580: Check for recursive frame loading excluding about:srcdoc URIs.
michael@0:   // srcdoc URIs require their contents to be specified inline, so it isn't
michael@0:   // possible for undesirable recursion to occur without the aid of a
michael@0:   // non-srcdoc URI,  which this method will block normally.
michael@0:   // Besides, URI is not enough to guarantee uniqueness of srcdoc documents.
michael@0:   nsAutoCString buffer;
michael@0:   rv = aURI->GetScheme(buffer);
michael@0:   if (NS_SUCCEEDED(rv) && buffer.EqualsLiteral("about")) {
michael@0:     rv = aURI->GetPath(buffer);
michael@0:     if (NS_SUCCEEDED(rv) && buffer.EqualsLiteral("srcdoc")) {
michael@0:       // Duplicates allowed up to depth limits
michael@0:       return NS_OK;
michael@0:     }
michael@0:   }
michael@0:   int32_t matchCount = 0;
michael@0:   mDocShell->GetSameTypeParent(getter_AddRefs(parentAsItem));
michael@0:   while (parentAsItem) {
michael@0:     // Check the parent URI with the URI we're loading
michael@0:     nsCOMPtr<nsIWebNavigation> parentAsNav(do_QueryInterface(parentAsItem));
michael@0:     if (parentAsNav) {
michael@0:       // Does the URI match the one we're about to load?
michael@0:       nsCOMPtr<nsIURI> parentURI;
michael@0:       parentAsNav->GetCurrentURI(getter_AddRefs(parentURI));
michael@0:       if (parentURI) {
michael@0:         // Bug 98158/193011: We need to ignore data after the #
michael@0:         bool equal;
michael@0:         rv = aURI->EqualsExceptRef(parentURI, &equal);
michael@0:         NS_ENSURE_SUCCESS(rv, rv);
michael@0:         
michael@0:         if (equal) {
michael@0:           matchCount++;
michael@0:           if (matchCount >= MAX_SAME_URL_CONTENT_FRAMES) {
michael@0:             NS_WARNING("Too many nested content frames have the same url (recursion?) so giving up");
michael@0:             return NS_ERROR_UNEXPECTED;
michael@0:           }
michael@0:         }
michael@0:       }
michael@0:     }
michael@0:     nsCOMPtr<nsIDocShellTreeItem> temp;
michael@0:     temp.swap(parentAsItem);
michael@0:     temp->GetSameTypeParent(getter_AddRefs(parentAsItem));
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::GetWindowDimensions(nsRect& aRect)
michael@0: {
michael@0:   // Need to get outer window position here
michael@0:   nsIDocument* doc = mOwnerContent->GetDocument();
michael@0:   if (!doc) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   if (doc->IsResourceDoc()) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIWebNavigation> parentAsWebNav =
michael@0:     do_GetInterface(doc->GetWindow());
michael@0: 
michael@0:   if (!parentAsWebNav) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocShellTreeItem> parentAsItem(do_QueryInterface(parentAsWebNav));
michael@0: 
michael@0:   nsCOMPtr<nsIDocShellTreeOwner> parentOwner;
michael@0:   if (NS_FAILED(parentAsItem->GetTreeOwner(getter_AddRefs(parentOwner))) ||
michael@0:       !parentOwner) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIBaseWindow> treeOwnerAsWin(do_GetInterface(parentOwner));
michael@0:   treeOwnerAsWin->GetPosition(&aRect.x, &aRect.y);
michael@0:   treeOwnerAsWin->GetSize(&aRect.width, &aRect.height);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::UpdatePositionAndSize(nsSubDocumentFrame *aIFrame)
michael@0: {
michael@0:   if (mRemoteFrame) {
michael@0:     if (mRemoteBrowser) {
michael@0:       nsIntSize size = aIFrame->GetSubdocumentSize();
michael@0:       nsRect dimensions;
michael@0:       NS_ENSURE_SUCCESS(GetWindowDimensions(dimensions), NS_ERROR_FAILURE);
michael@0:       mRemoteBrowser->UpdateDimensions(dimensions, size);
michael@0:     }
michael@0:     return NS_OK;
michael@0:   }
michael@0:   return UpdateBaseWindowPositionAndSize(aIFrame);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::UpdateBaseWindowPositionAndSize(nsSubDocumentFrame *aIFrame)
michael@0: {
michael@0:   nsCOMPtr<nsIDocShell> docShell;
michael@0:   GetDocShell(getter_AddRefs(docShell));
michael@0:   nsCOMPtr<nsIBaseWindow> baseWindow(do_QueryInterface(docShell));
michael@0: 
michael@0:   // resize the sub document
michael@0:   if (baseWindow) {
michael@0:     int32_t x = 0;
michael@0:     int32_t y = 0;
michael@0: 
michael@0:     nsWeakFrame weakFrame(aIFrame);
michael@0: 
michael@0:     baseWindow->GetPositionAndSize(&x, &y, nullptr, nullptr);
michael@0: 
michael@0:     if (!weakFrame.IsAlive()) {
michael@0:       // GetPositionAndSize() killed us
michael@0:       return NS_OK;
michael@0:     }
michael@0: 
michael@0:     nsIntSize size = aIFrame->GetSubdocumentSize();
michael@0: 
michael@0:     baseWindow->SetPositionAndSize(x, y, size.width, size.height, false);
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetRenderMode(uint32_t* aRenderMode)
michael@0: {
michael@0:   *aRenderMode = mRenderMode;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::SetRenderMode(uint32_t aRenderMode)
michael@0: {
michael@0:   if (aRenderMode == mRenderMode) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   mRenderMode = aRenderMode;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetEventMode(uint32_t* aEventMode)
michael@0: {
michael@0:   *aEventMode = mEventMode;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::SetEventMode(uint32_t aEventMode)
michael@0: {
michael@0:   mEventMode = aEventMode;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetClipSubdocument(bool* aResult)
michael@0: {
michael@0:   *aResult = mClipSubdocument;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::SetClipSubdocument(bool aClip)
michael@0: {
michael@0:   mClipSubdocument = aClip;
michael@0:   nsIFrame* frame = GetPrimaryFrameOfOwningContent();
michael@0:   if (frame) {
michael@0:     frame->InvalidateFrame();
michael@0:     frame->PresContext()->PresShell()->
michael@0:       FrameNeedsReflow(frame, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
michael@0:     nsSubDocumentFrame* subdocFrame = do_QueryFrame(frame);
michael@0:     if (subdocFrame) {
michael@0:       nsIFrame* subdocRootFrame = subdocFrame->GetSubdocumentRootFrame();
michael@0:       if (subdocRootFrame) {
michael@0:         nsIFrame* subdocRootScrollFrame = subdocRootFrame->PresContext()->PresShell()->
michael@0:           GetRootScrollFrame();
michael@0:         if (subdocRootScrollFrame) {
michael@0:           frame->PresContext()->PresShell()->
michael@0:             FrameNeedsReflow(frame, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
michael@0:         }
michael@0:       }
michael@0:     }
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetClampScrollPosition(bool* aResult)
michael@0: {
michael@0:   *aResult = mClampScrollPosition;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::SetClampScrollPosition(bool aClamp)
michael@0: {
michael@0:   mClampScrollPosition = aClamp;
michael@0: 
michael@0:   // When turning clamping on, make sure the current position is clamped.
michael@0:   if (aClamp) {
michael@0:     nsIFrame* frame = GetPrimaryFrameOfOwningContent();
michael@0:     nsSubDocumentFrame* subdocFrame = do_QueryFrame(frame);
michael@0:     if (subdocFrame) {
michael@0:       nsIFrame* subdocRootFrame = subdocFrame->GetSubdocumentRootFrame();
michael@0:       if (subdocRootFrame) {
michael@0:         nsIScrollableFrame* subdocRootScrollFrame = subdocRootFrame->PresContext()->PresShell()->
michael@0:           GetRootScrollFrameAsScrollable();
michael@0:         if (subdocRootScrollFrame) {
michael@0:           subdocRootScrollFrame->ScrollTo(subdocRootScrollFrame->GetScrollPosition(), nsIScrollableFrame::INSTANT);
michael@0:         }
michael@0:       }
michael@0:     }
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::TryRemoteBrowser()
michael@0: {
michael@0:   NS_ASSERTION(!mRemoteBrowser, "TryRemoteBrowser called with a remote browser already?");
michael@0: 
michael@0:   nsIDocument* doc = mOwnerContent->GetDocument();
michael@0:   if (!doc) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   if (doc->IsResourceDoc()) {
michael@0:     // Don't allow subframe loads in external reference documents
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIWebNavigation> parentAsWebNav =
michael@0:     do_GetInterface(doc->GetWindow());
michael@0: 
michael@0:   if (!parentAsWebNav) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocShellTreeItem> parentAsItem(do_QueryInterface(parentAsWebNav));
michael@0: 
michael@0:   // <iframe mozbrowser> gets to skip these checks.
michael@0:   if (!OwnerIsBrowserOrAppFrame()) {
michael@0:     if (parentAsItem->ItemType() != nsIDocShellTreeItem::typeChrome) {
michael@0:       return false;
michael@0:     }
michael@0: 
michael@0:     if (!mOwnerContent->IsXUL()) {
michael@0:       return false;
michael@0:     }
michael@0: 
michael@0:     nsAutoString value;
michael@0:     mOwnerContent->GetAttr(kNameSpaceID_None, nsGkAtoms::type, value);
michael@0: 
michael@0:     if (!value.LowerCaseEqualsLiteral("content") &&
michael@0:         !StringBeginsWith(value, NS_LITERAL_STRING("content-"),
michael@0:                           nsCaseInsensitiveStringComparator())) {
michael@0:       return false;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   uint32_t chromeFlags = 0;
michael@0:   nsCOMPtr<nsIDocShellTreeOwner> parentOwner;
michael@0:   if (NS_FAILED(parentAsItem->GetTreeOwner(getter_AddRefs(parentOwner))) ||
michael@0:       !parentOwner) {
michael@0:     return false;
michael@0:   }
michael@0:   nsCOMPtr<nsIXULWindow> window(do_GetInterface(parentOwner));
michael@0:   if (!window) {
michael@0:     return false;
michael@0:   }
michael@0:   if (NS_FAILED(window->GetChromeFlags(&chromeFlags))) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   PROFILER_LABEL("nsFrameLoader", "CreateRemoteBrowser");
michael@0: 
michael@0:   MutableTabContext context;
michael@0:   nsCOMPtr<mozIApplication> ownApp = GetOwnApp();
michael@0:   nsCOMPtr<mozIApplication> containingApp = GetContainingApp();
michael@0:   ScrollingBehavior scrollingBehavior = DEFAULT_SCROLLING;
michael@0: 
michael@0:   if (Preferences::GetBool("dom.browser_frames.useAsyncPanZoom", false) ||
michael@0:       mOwnerContent->AttrValueIs(kNameSpaceID_None,
michael@0:                                  nsGkAtoms::mozasyncpanzoom,
michael@0:                                  nsGkAtoms::_true,
michael@0:                                  eCaseMatters)) {
michael@0:     scrollingBehavior = ASYNC_PAN_ZOOM;
michael@0:   }
michael@0: 
michael@0:   bool rv = true;
michael@0:   if (ownApp) {
michael@0:     rv = context.SetTabContextForAppFrame(ownApp, containingApp, scrollingBehavior);
michael@0:   } else if (OwnerIsBrowserFrame()) {
michael@0:     // The |else| above is unnecessary; OwnerIsBrowserFrame() implies !ownApp.
michael@0:     rv = context.SetTabContextForBrowserFrame(containingApp, scrollingBehavior);
michael@0:   } else {
michael@0:     rv = context.SetTabContextForNormalFrame(scrollingBehavior);
michael@0:   }
michael@0:   NS_ENSURE_TRUE(rv, false);
michael@0: 
michael@0:   nsCOMPtr<Element> ownerElement = mOwnerContent;
michael@0:   mRemoteBrowser = ContentParent::CreateBrowserOrApp(context, ownerElement);
michael@0:   if (mRemoteBrowser) {
michael@0:     mChildID = mRemoteBrowser->Manager()->ChildID();
michael@0:     nsCOMPtr<nsIDocShellTreeItem> rootItem;
michael@0:     parentAsItem->GetRootTreeItem(getter_AddRefs(rootItem));
michael@0:     nsCOMPtr<nsIDOMWindow> rootWin = do_GetInterface(rootItem);
michael@0:     nsCOMPtr<nsIDOMChromeWindow> rootChromeWin = do_QueryInterface(rootWin);
michael@0:     NS_ABORT_IF_FALSE(rootChromeWin, "How did we not get a chrome window here?");
michael@0: 
michael@0:     nsCOMPtr<nsIBrowserDOMWindow> browserDOMWin;
michael@0:     rootChromeWin->GetBrowserDOMWindow(getter_AddRefs(browserDOMWin));
michael@0:     mRemoteBrowser->SetBrowserDOMWindow(browserDOMWin);
michael@0: 
michael@0:     mContentParent = mRemoteBrowser->Manager();
michael@0: 
michael@0:     if (mOwnerContent->AttrValueIs(kNameSpaceID_None,
michael@0:                                    nsGkAtoms::mozpasspointerevents,
michael@0:                                    nsGkAtoms::_true,
michael@0:                                    eCaseMatters)) {
michael@0:       unused << mRemoteBrowser->SendSetUpdateHitRegion(true);
michael@0:     }
michael@0:   }
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: mozilla::dom::PBrowserParent*
michael@0: nsFrameLoader::GetRemoteBrowser()
michael@0: {
michael@0:   return mRemoteBrowser;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::ActivateRemoteFrame() {
michael@0:   if (mRemoteBrowser) {
michael@0:     mRemoteBrowser->Activate();
michael@0:     return NS_OK;
michael@0:   }
michael@0:   return NS_ERROR_UNEXPECTED;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::DeactivateRemoteFrame() {
michael@0:   if (mRemoteBrowser) {
michael@0:     mRemoteBrowser->Deactivate();
michael@0:     return NS_OK;
michael@0:   }
michael@0:   return NS_ERROR_UNEXPECTED;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::SendCrossProcessMouseEvent(const nsAString& aType,
michael@0:                                           float aX,
michael@0:                                           float aY,
michael@0:                                           int32_t aButton,
michael@0:                                           int32_t aClickCount,
michael@0:                                           int32_t aModifiers,
michael@0:                                           bool aIgnoreRootScrollFrame)
michael@0: {
michael@0:   if (mRemoteBrowser) {
michael@0:     mRemoteBrowser->SendMouseEvent(aType, aX, aY, aButton,
michael@0:                                    aClickCount, aModifiers,
michael@0:                                    aIgnoreRootScrollFrame);
michael@0:     return NS_OK;
michael@0:   }
michael@0:   return NS_ERROR_FAILURE;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::ActivateFrameEvent(const nsAString& aType,
michael@0:                                   bool aCapture)
michael@0: {
michael@0:   if (mRemoteBrowser) {
michael@0:     return mRemoteBrowser->SendActivateFrameEvent(nsString(aType), aCapture) ?
michael@0:       NS_OK : NS_ERROR_NOT_AVAILABLE;
michael@0:   }
michael@0:   return NS_ERROR_FAILURE;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::SendCrossProcessKeyEvent(const nsAString& aType,
michael@0:                                         int32_t aKeyCode,
michael@0:                                         int32_t aCharCode,
michael@0:                                         int32_t aModifiers,
michael@0:                                         bool aPreventDefault)
michael@0: {
michael@0:   if (mRemoteBrowser) {
michael@0:     mRemoteBrowser->SendKeyEvent(aType, aKeyCode, aCharCode, aModifiers,
michael@0:                                  aPreventDefault);
michael@0:     return NS_OK;
michael@0:   }
michael@0:   return NS_ERROR_FAILURE;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::CreateStaticClone(nsIFrameLoader* aDest)
michael@0: {
michael@0:   nsFrameLoader* dest = static_cast<nsFrameLoader*>(aDest);
michael@0:   dest->MaybeCreateDocShell();
michael@0:   NS_ENSURE_STATE(dest->mDocShell);
michael@0: 
michael@0:   nsCOMPtr<nsIDocument> dummy = do_GetInterface(dest->mDocShell);
michael@0:   nsCOMPtr<nsIContentViewer> viewer;
michael@0:   dest->mDocShell->GetContentViewer(getter_AddRefs(viewer));
michael@0:   NS_ENSURE_STATE(viewer);
michael@0: 
michael@0:   nsCOMPtr<nsIDocShell> origDocShell;
michael@0:   GetDocShell(getter_AddRefs(origDocShell));
michael@0:   nsCOMPtr<nsIDocument> doc = do_GetInterface(origDocShell);
michael@0:   NS_ENSURE_STATE(doc);
michael@0:   nsCOMPtr<nsIDocument> clonedDoc = doc->CreateStaticClone(dest->mDocShell);
michael@0:   nsCOMPtr<nsIDOMDocument> clonedDOMDoc = do_QueryInterface(clonedDoc);
michael@0: 
michael@0:   viewer->SetDOMDocument(clonedDOMDoc);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::DoLoadFrameScript(const nsAString& aURL, bool aRunInGlobalScope)
michael@0: {
michael@0:   mozilla::dom::PBrowserParent* tabParent = GetRemoteBrowser();
michael@0:   if (tabParent) {
michael@0:     return tabParent->SendLoadRemoteScript(nsString(aURL), aRunInGlobalScope);
michael@0:   }
michael@0:   nsRefPtr<nsInProcessTabChildGlobal> tabChild =
michael@0:     static_cast<nsInProcessTabChildGlobal*>(GetTabChildGlobalAsEventTarget());
michael@0:   if (tabChild) {
michael@0:     tabChild->LoadFrameScript(aURL, aRunInGlobalScope);
michael@0:   }
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: class nsAsyncMessageToChild : public nsSameProcessAsyncMessageBase,
michael@0:                               public nsRunnable
michael@0: {
michael@0: public:
michael@0:   nsAsyncMessageToChild(JSContext* aCx,
michael@0:                         nsFrameLoader* aFrameLoader,
michael@0:                         const nsAString& aMessage,
michael@0:                         const StructuredCloneData& aData,
michael@0:                         JS::Handle<JSObject *> aCpows,
michael@0:                         nsIPrincipal* aPrincipal)
michael@0:     : nsSameProcessAsyncMessageBase(aCx, aMessage, aData, aCpows, aPrincipal)
michael@0:     , mFrameLoader(aFrameLoader)
michael@0:   {
michael@0:   }
michael@0: 
michael@0:   NS_IMETHOD Run()
michael@0:   {
michael@0:     nsInProcessTabChildGlobal* tabChild =
michael@0:       static_cast<nsInProcessTabChildGlobal*>(mFrameLoader->mChildMessageManager.get());
michael@0:     if (tabChild && tabChild->GetInnerManager()) {
michael@0:       nsCOMPtr<nsIXPConnectJSObjectHolder> kungFuDeathGrip(tabChild->GetGlobal());
michael@0:       ReceiveMessage(static_cast<EventTarget*>(tabChild),
michael@0:                      tabChild->GetInnerManager());
michael@0:     }
michael@0:     return NS_OK;
michael@0:   }
michael@0:   nsRefPtr<nsFrameLoader> mFrameLoader;
michael@0: };
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::DoSendAsyncMessage(JSContext* aCx,
michael@0:                                   const nsAString& aMessage,
michael@0:                                   const StructuredCloneData& aData,
michael@0:                                   JS::Handle<JSObject *> aCpows,
michael@0:                                   nsIPrincipal* aPrincipal)
michael@0: {
michael@0:   TabParent* tabParent = mRemoteBrowser;
michael@0:   if (tabParent) {
michael@0:     ClonedMessageData data;
michael@0:     ContentParent* cp = tabParent->Manager();
michael@0:     if (!BuildClonedMessageDataForParent(cp, aData, data)) {
michael@0:       return false;
michael@0:     }
michael@0:     InfallibleTArray<mozilla::jsipc::CpowEntry> cpows;
michael@0:     if (aCpows && !cp->GetCPOWManager()->Wrap(aCx, aCpows, &cpows)) {
michael@0:       return false;
michael@0:     }
michael@0:     return tabParent->SendAsyncMessage(nsString(aMessage), data, cpows,
michael@0:                                        aPrincipal);
michael@0:   }
michael@0: 
michael@0:   if (mChildMessageManager) {
michael@0:     nsRefPtr<nsIRunnable> ev = new nsAsyncMessageToChild(aCx, this, aMessage,
michael@0:                                                          aData, aCpows,
michael@0:                                                          aPrincipal);
michael@0:     NS_DispatchToCurrentThread(ev);
michael@0:     return true;
michael@0:   }
michael@0: 
michael@0:   // We don't have any targets to send our asynchronous message to.
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::CheckPermission(const nsAString& aPermission)
michael@0: {
michael@0:   return AssertAppProcessPermission(GetRemoteBrowser(),
michael@0:                                     NS_ConvertUTF16toUTF8(aPermission).get());
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::CheckManifestURL(const nsAString& aManifestURL)
michael@0: {
michael@0:   return AssertAppProcessManifestURL(GetRemoteBrowser(),
michael@0:                                      NS_ConvertUTF16toUTF8(aManifestURL).get());
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsFrameLoader::CheckAppHasPermission(const nsAString& aPermission)
michael@0: {
michael@0:   return AssertAppHasPermission(GetRemoteBrowser(),
michael@0:                                 NS_ConvertUTF16toUTF8(aPermission).get());
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetMessageManager(nsIMessageSender** aManager)
michael@0: {
michael@0:   EnsureMessageManager();
michael@0:   if (mMessageManager) {
michael@0:     CallQueryInterface(mMessageManager, aManager);
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetContentViewsIn(float aXPx, float aYPx,
michael@0:                                  float aTopSize, float aRightSize,
michael@0:                                  float aBottomSize, float aLeftSize,
michael@0:                                  uint32_t* aLength,
michael@0:                                  nsIContentView*** aResult)
michael@0: {
michael@0:   nscoord x = nsPresContext::CSSPixelsToAppUnits(aXPx - aLeftSize);
michael@0:   nscoord y = nsPresContext::CSSPixelsToAppUnits(aYPx - aTopSize);
michael@0:   nscoord w = nsPresContext::CSSPixelsToAppUnits(aLeftSize + aRightSize) + 1;
michael@0:   nscoord h = nsPresContext::CSSPixelsToAppUnits(aTopSize + aBottomSize) + 1;
michael@0:   nsRect target(x, y, w, h);
michael@0: 
michael@0:   nsIFrame* frame = GetPrimaryFrameOfOwningContent();
michael@0: 
michael@0:   nsTArray<ViewID> ids;
michael@0:   nsLayoutUtils::GetRemoteContentIds(frame, target, ids, true);
michael@0:   if (ids.Length() == 0 || !GetCurrentRemoteFrame()) {
michael@0:     *aResult = nullptr;
michael@0:     *aLength = 0;
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   nsIContentView** result = reinterpret_cast<nsIContentView**>(
michael@0:     NS_Alloc(ids.Length() * sizeof(nsIContentView*)));
michael@0: 
michael@0:   for (uint32_t i = 0; i < ids.Length(); i++) {
michael@0:     nsIContentView* view = GetCurrentRemoteFrame()->GetContentView(ids[i]);
michael@0:     NS_ABORT_IF_FALSE(view, "Retrieved ID from RenderFrameParent, it should be valid!");
michael@0:     nsRefPtr<nsIContentView>(view).forget(&result[i]);
michael@0:   }
michael@0: 
michael@0:   *aResult = result;
michael@0:   *aLength = ids.Length();
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetRootContentView(nsIContentView** aContentView)
michael@0: {
michael@0:   RenderFrameParent* rfp = GetCurrentRemoteFrame();
michael@0:   if (!rfp) {
michael@0:     *aContentView = nullptr;
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   nsContentView* view = rfp->GetRootContentView();
michael@0:   NS_ABORT_IF_FALSE(view, "Should always be able to create root scrollable!");
michael@0:   nsRefPtr<nsIContentView>(view).forget(aContentView);
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFrameLoader::EnsureMessageManager()
michael@0: {
michael@0:   NS_ENSURE_STATE(mOwnerContent);
michael@0: 
michael@0:   nsresult rv = MaybeCreateDocShell();
michael@0:   if (NS_FAILED(rv)) {
michael@0:     return rv;
michael@0:   }
michael@0: 
michael@0:   if (!mIsTopLevelContent && !OwnerIsBrowserOrAppFrame() && !mRemoteFrame) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   if (mMessageManager) {
michael@0:     if (ShouldUseRemoteProcess() && mRemoteBrowserShown) {
michael@0:       mMessageManager->InitWithCallback(this);
michael@0:     }
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   nsIScriptContext* sctx = mOwnerContent->GetContextForEventHandlers(&rv);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0:   NS_ENSURE_STATE(sctx);
michael@0:   AutoPushJSContext cx(sctx->GetNativeContext());
michael@0:   NS_ENSURE_STATE(cx);
michael@0: 
michael@0:   nsCOMPtr<nsIDOMChromeWindow> chromeWindow =
michael@0:     do_QueryInterface(GetOwnerDoc()->GetWindow());
michael@0:   nsCOMPtr<nsIMessageBroadcaster> parentManager;
michael@0:   if (chromeWindow) {
michael@0:     chromeWindow->GetMessageManager(getter_AddRefs(parentManager));
michael@0:   }
michael@0: 
michael@0:   if (ShouldUseRemoteProcess()) {
michael@0:     mMessageManager = new nsFrameMessageManager(mRemoteBrowserShown ? this : nullptr,
michael@0:                                                 static_cast<nsFrameMessageManager*>(parentManager.get()),
michael@0:                                                 MM_CHROME);
michael@0:   } else {
michael@0:     mMessageManager = new nsFrameMessageManager(nullptr,
michael@0:                                                 static_cast<nsFrameMessageManager*>(parentManager.get()),
michael@0:                                                 MM_CHROME);
michael@0: 
michael@0:     mChildMessageManager =
michael@0:       new nsInProcessTabChildGlobal(mDocShell, mOwnerContent, mMessageManager);
michael@0:     // Force pending frame scripts to be loaded.
michael@0:     mMessageManager->InitWithCallback(this);
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: EventTarget*
michael@0: nsFrameLoader::GetTabChildGlobalAsEventTarget()
michael@0: {
michael@0:   return static_cast<nsInProcessTabChildGlobal*>(mChildMessageManager.get());
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetOwnerElement(nsIDOMElement **aElement)
michael@0: {
michael@0:   nsCOMPtr<nsIDOMElement> ownerElement = do_QueryInterface(mOwnerContent);
michael@0:   ownerElement.forget(aElement);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetChildID(uint64_t* aChildID)
michael@0: {
michael@0:   *aChildID = mChildID;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::SetRemoteBrowser(nsITabParent* aTabParent)
michael@0: {
michael@0:   MOZ_ASSERT(!mRemoteBrowser);
michael@0:   MOZ_ASSERT(!mCurrentRemoteFrame);
michael@0:   mRemoteFrame = true;
michael@0:   mRemoteBrowser = static_cast<TabParent*>(aTabParent);
michael@0:   mChildID = mRemoteBrowser ? mRemoteBrowser->Manager()->ChildID() : 0;
michael@0:   ShowRemoteFrame(nsIntSize(0, 0));
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::SetDetachedSubdocView(nsView* aDetachedViews,
michael@0:                                      nsIDocument* aContainerDoc)
michael@0: {
michael@0:   mDetachedSubdocViews = aDetachedViews;
michael@0:   mContainerDocWhileDetached = aContainerDoc;
michael@0: }
michael@0: 
michael@0: nsView*
michael@0: nsFrameLoader::GetDetachedSubdocView(nsIDocument** aContainerDoc) const
michael@0: {
michael@0:   NS_IF_ADDREF(*aContainerDoc = mContainerDocWhileDetached);
michael@0:   return mDetachedSubdocViews;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::ApplySandboxFlags(uint32_t sandboxFlags)
michael@0: {
michael@0:   if (mDocShell) {
michael@0:     uint32_t parentSandboxFlags = mOwnerContent->OwnerDoc()->GetSandboxFlags();
michael@0: 
michael@0:     // The child can only add restrictions, never remove them.
michael@0:     sandboxFlags |= parentSandboxFlags;
michael@0:     mDocShell->SetSandboxFlags(sandboxFlags);
michael@0:   }
michael@0: }
michael@0: 
michael@0: /* virtual */ void
michael@0: nsFrameLoader::AttributeChanged(nsIDocument* aDocument,
michael@0:                                 mozilla::dom::Element* aElement,
michael@0:                                 int32_t      aNameSpaceID,
michael@0:                                 nsIAtom*     aAttribute,
michael@0:                                 int32_t      aModType)
michael@0: {
michael@0:   MOZ_ASSERT(mObservingOwnerContent);
michael@0:   // TODO: Implement ContentShellAdded for remote browsers (bug 658304)
michael@0:   MOZ_ASSERT(!mRemoteBrowser);
michael@0: 
michael@0:   if (aNameSpaceID != kNameSpaceID_None || aAttribute != TypeAttrName()) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (aElement != mOwnerContent) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   // Note: This logic duplicates a lot of logic in
michael@0:   // MaybeCreateDocshell.  We should fix that.
michael@0: 
michael@0:   // Notify our enclosing chrome that our type has changed.  We only do this
michael@0:   // if our parent is chrome, since in all other cases we're random content
michael@0:   // subframes and the treeowner shouldn't worry about us.
michael@0:   if (!mDocShell) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocShellTreeItem> parentItem;
michael@0:   mDocShell->GetParent(getter_AddRefs(parentItem));
michael@0:   if (!parentItem) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (parentItem->ItemType() != nsIDocShellTreeItem::typeChrome) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDocShellTreeOwner> parentTreeOwner;
michael@0:   parentItem->GetTreeOwner(getter_AddRefs(parentTreeOwner));
michael@0:   if (!parentTreeOwner) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   nsAutoString value;
michael@0:   aElement->GetAttr(kNameSpaceID_None, TypeAttrName(), value);
michael@0: 
michael@0:   bool is_primary = value.LowerCaseEqualsLiteral("content-primary");
michael@0: 
michael@0: #ifdef MOZ_XUL
michael@0:   // when a content panel is no longer primary, hide any open popups it may have
michael@0:   if (!is_primary) {
michael@0:     nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
michael@0:     if (pm)
michael@0:       pm->HidePopupsInDocShell(mDocShell);
michael@0:   }
michael@0: #endif
michael@0: 
michael@0:   parentTreeOwner->ContentShellRemoved(mDocShell);
michael@0:   if (value.LowerCaseEqualsLiteral("content") ||
michael@0:       StringBeginsWith(value, NS_LITERAL_STRING("content-"),
michael@0:                        nsCaseInsensitiveStringComparator())) {
michael@0:     bool is_targetable = is_primary ||
michael@0:       value.LowerCaseEqualsLiteral("content-targetable");
michael@0: 
michael@0:     parentTreeOwner->ContentShellAdded(mDocShell, is_primary,
michael@0:                                        is_targetable, value);
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFrameLoader::ResetPermissionManagerStatus()
michael@0: {
michael@0:   // The resetting of the permissions status can run only
michael@0:   // in the main process.
michael@0:   if (XRE_GetProcessType() == GeckoProcessType_Content) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   // Finding the new app Id:
michael@0:   // . first we check if the owner is an app frame
michael@0:   // . second, we check if the owner is a browser frame
michael@0:   // in both cases we populate the appId variable.
michael@0:   uint32_t appId = nsIScriptSecurityManager::NO_APP_ID;
michael@0:   if (OwnerIsAppFrame()) {
michael@0:     // You can't be both an app and a browser frame.
michael@0:     MOZ_ASSERT(!OwnerIsBrowserFrame());
michael@0: 
michael@0:     nsCOMPtr<mozIApplication> ownApp = GetOwnApp();
michael@0:     MOZ_ASSERT(ownApp);
michael@0:     uint32_t ownAppId = nsIScriptSecurityManager::NO_APP_ID;
michael@0:     if (ownApp && NS_SUCCEEDED(ownApp->GetLocalId(&ownAppId))) {
michael@0:       appId = ownAppId;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   if (OwnerIsBrowserFrame()) {
michael@0:     // You can't be both a browser and an app frame.
michael@0:     MOZ_ASSERT(!OwnerIsAppFrame());
michael@0: 
michael@0:     nsCOMPtr<mozIApplication> containingApp = GetContainingApp();
michael@0:     uint32_t containingAppId = nsIScriptSecurityManager::NO_APP_ID;
michael@0:     if (containingApp && NS_SUCCEEDED(containingApp->GetLocalId(&containingAppId))) {
michael@0:       appId = containingAppId;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   // Nothing changed.
michael@0:   if (appId == mAppIdSentToPermissionManager) {
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIPermissionManager> permMgr = do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
michael@0:   if (!permMgr) {
michael@0:     NS_ERROR("No PermissionManager available!");
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   // If previously we registered an appId, we have to unregister it.
michael@0:   if (mAppIdSentToPermissionManager != nsIScriptSecurityManager::NO_APP_ID) {
michael@0:     permMgr->ReleaseAppId(mAppIdSentToPermissionManager);
michael@0:     mAppIdSentToPermissionManager = nsIScriptSecurityManager::NO_APP_ID;
michael@0:   }
michael@0: 
michael@0:   // Register the new AppId.
michael@0:   if (appId != nsIScriptSecurityManager::NO_APP_ID) {
michael@0:     mAppIdSentToPermissionManager = appId;
michael@0:     permMgr->AddrefAppId(mAppIdSentToPermissionManager);
michael@0:   }
michael@0: }
michael@0: 
michael@0: /* [infallible] */ NS_IMETHODIMP
michael@0: nsFrameLoader::SetVisible(bool aVisible)
michael@0: {
michael@0:   if (mVisible == aVisible) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   mVisible = aVisible;
michael@0:   nsCOMPtr<nsIObserverService> os = services::GetObserverService();
michael@0:   if (os) {
michael@0:     os->NotifyObservers(NS_ISUPPORTS_CAST(nsIFrameLoader*, this),
michael@0:                         "frameloader-visible-changed", nullptr);
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* [infallible] */ NS_IMETHODIMP
michael@0: nsFrameLoader::GetVisible(bool* aVisible)
michael@0: {
michael@0:   *aVisible = mVisible;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetTabParent(nsITabParent** aTabParent)
michael@0: {
michael@0:   nsCOMPtr<nsITabParent> tp = mRemoteBrowser;
michael@0:   tp.forget(aTabParent);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFrameLoader::GetLoadContext(nsILoadContext** aLoadContext)
michael@0: {
michael@0:   nsCOMPtr<nsILoadContext> loadContext;
michael@0:   if (mRemoteBrowser) {
michael@0:     loadContext = mRemoteBrowser->GetLoadContext();
michael@0:   } else {
michael@0:     nsCOMPtr<nsIDocShell> docShell;
michael@0:     GetDocShell(getter_AddRefs(docShell));
michael@0:     loadContext = do_GetInterface(docShell);
michael@0:   }
michael@0:   loadContext.forget(aLoadContext);
michael@0:   return NS_OK;
michael@0: }