/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=2 sw=2 et tw=80: */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is Mozilla Communicator client code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Dan Rosen * Roland Mainz * Mats Palmgren * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ /* container for a document and its presentation */ #include "nscore.h" #include "nsCOMPtr.h" #include "nsCRT.h" #include "nsString.h" #include "nsReadableUtils.h" #include "nsISupports.h" #include "nsIContent.h" #include "nsIContentViewerContainer.h" #include "nsIDocumentViewer.h" #include "nsIDocumentViewerPrint.h" #include "nsIDocument.h" #include "nsPresContext.h" #include "nsIPresShell.h" #include "nsIEventStateManager.h" #include "nsStyleSet.h" #include "nsIStyleSheet.h" #include "nsICSSStyleSheet.h" #include "nsIFrame.h" #include "nsILinkHandler.h" #include "nsIDOMDocument.h" #include "nsISelectionListener.h" #include "nsISelectionPrivate.h" #include "nsIDOMHTMLDocument.h" #include "nsIDOMNSHTMLDocument.h" #include "nsIDOMHTMLCollection.h" #include "nsIDOMHTMLElement.h" #include "nsIDOMRange.h" #include "nsContentCID.h" #include "nsLayoutCID.h" #include "nsContentUtils.h" #include "nsLayoutStylesheetCache.h" #include "nsViewsCID.h" #include "nsWidgetsCID.h" #include "nsIDeviceContext.h" #include "nsIDeviceContextSpec.h" #include "nsIViewManager.h" #include "nsIView.h" #include "nsIPageSequenceFrame.h" #include "nsIURL.h" #include "nsNetUtil.h" #include "nsIContentViewerEdit.h" #include "nsIContentViewerFile.h" #include "nsICSSLoader.h" #include "nsIMarkupDocumentViewer.h" #include "nsIInterfaceRequestor.h" #include "nsIInterfaceRequestorUtils.h" #include "nsIDocShellTreeItem.h" #include "nsIDocShellTreeNode.h" #include "nsIDocShellTreeOwner.h" #include "nsIDocShell.h" #include "nsIBaseWindow.h" #include "nsIFrameDebug.h" #include "nsILayoutHistoryState.h" #include "nsIParser.h" #include "nsGUIEvent.h" #include "nsHTMLReflowState.h" #include "nsIDOMHTMLAnchorElement.h" #include "nsIDOMHTMLAreaElement.h" #include "nsIDOMHTMLLinkElement.h" #include "nsIImageLoadingContent.h" #include "nsCopySupport.h" #include "nsIDOMHTMLFrameSetElement.h" #ifdef MOZ_XUL #include "nsIXULDocument.h" #include "nsXULPopupManager.h" #endif #include "nsPrintfCString.h" #include "nsIClipboardHelper.h" #include "nsPIDOMWindow.h" #include "nsJSEnvironment.h" #include "nsIFocusController.h" #include "nsIMenuParent.h" #include "nsIScrollableView.h" #include "nsIHTMLDocument.h" #include "nsITimelineService.h" #include "nsGfxCIID.h" #include "nsStyleSheetService.h" #include "nsIPrompt.h" #include "imgIContainer.h" // image animation mode constants //-------------------------- // Printing Include //--------------------------- #ifdef NS_PRINTING #include "nsIWebBrowserPrint.h" #include "nsPrintEngine.h" // Print Options #include "nsIPrintSettings.h" #include "nsIPrintSettingsService.h" #include "nsIPrintOptions.h" #include "nsIServiceManager.h" #include "nsISimpleEnumerator.h" #include "nsXPCOM.h" #include "nsISupportsPrimitives.h" // PrintOptions is now implemented by PrintSettingsService static const char sPrintOptionsContractID[] = "@mozilla.org/gfx/printsettings-service;1"; // Printing Events #include "nsPrintPreviewListener.h" #include "nsIDOMHTMLFrameElement.h" #include "nsIDOMHTMLIFrameElement.h" #include "nsIDOMHTMLObjectElement.h" #include "nsIPluginDocument.h" // Print Progress #include "nsIPrintProgress.h" #include "nsIPrintProgressParams.h" // Print error dialog #include "nsIWindowWatcher.h" // Printing #include "nsPrintEngine.h" #include "nsPagePrintTimer.h" #endif // NS_PRINTING // FrameSet #include "nsIDocument.h" //focus #include "nsIDOMEventTarget.h" #include "nsIDOMFocusListener.h" #include "nsISelectionController.h" #include "nsBidiUtils.h" #include "nsISHEntry.h" #include "nsISHistory.h" #include "nsISHistoryInternal.h" #include "nsIWebNavigation.h" #include "nsWeakPtr.h" #include "nsEventDispatcher.h" #include "nsPresShellIterator.h" //paint forcing #include "prenv.h" #include //switch to page layout #include "nsGfxCIID.h" #ifdef NS_DEBUG #undef NOISY_VIEWER #else #undef NOISY_VIEWER #endif //----------------------------------------------------- // PR LOGGING #ifdef MOZ_LOGGING #define FORCE_PR_LOG /* Allow logging in the release build */ #endif #include "prlog.h" #ifdef PR_LOGGING static PRLogModuleInfo * kPrintingLogMod = PR_NewLogModule("printing"); #define PR_PL(_p1) PR_LOG(kPrintingLogMod, PR_LOG_DEBUG, _p1); #define PRT_YESNO(_p) ((_p)?"YES":"NO") #else #define PRT_YESNO(_p) #define PR_PL(_p1) #endif //----------------------------------------------------- class DocumentViewerImpl; // a small delegate class used to avoid circular references #ifdef XP_MAC #pragma mark ** nsDocViewerSelectionListener ** #endif class nsDocViewerSelectionListener : public nsISelectionListener { public: // nsISupports interface... NS_DECL_ISUPPORTS // nsISelectionListerner interface NS_DECL_NSISELECTIONLISTENER nsDocViewerSelectionListener() : mDocViewer(NULL) , mGotSelectionState(PR_FALSE) , mSelectionWasCollapsed(PR_FALSE) { } virtual ~nsDocViewerSelectionListener() {} nsresult Init(DocumentViewerImpl *aDocViewer); protected: DocumentViewerImpl* mDocViewer; PRPackedBool mGotSelectionState; PRPackedBool mSelectionWasCollapsed; }; /** editor Implementation of the FocusListener interface */ class nsDocViewerFocusListener : public nsIDOMFocusListener { public: /** default constructor */ nsDocViewerFocusListener(); /** default destructor */ virtual ~nsDocViewerFocusListener(); /*interfaces for addref and release and queryinterface*/ NS_DECL_ISUPPORTS /*BEGIN implementations of focus event handler interface*/ NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent); NS_IMETHOD Focus(nsIDOMEvent* aEvent); NS_IMETHOD Blur(nsIDOMEvent* aEvent); /*END implementations of focus event handler interface*/ nsresult Init(DocumentViewerImpl *aDocViewer); private: DocumentViewerImpl* mDocViewer; }; #ifdef XP_MAC #pragma mark ** DocumentViewerImpl ** #endif //------------------------------------------------------------- class DocumentViewerImpl : public nsIDocumentViewer, public nsIContentViewerEdit, public nsIContentViewerFile, public nsIMarkupDocumentViewer, public nsIDocumentViewerPrint #ifdef NS_PRINTING , public nsIWebBrowserPrint #endif { friend class nsDocViewerSelectionListener; friend class nsPagePrintTimer; friend class nsPrintEngine; public: DocumentViewerImpl(); NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW // nsISupports interface... NS_DECL_ISUPPORTS // nsIContentViewer interface... NS_DECL_NSICONTENTVIEWER // nsIDocumentViewer interface... NS_IMETHOD SetUAStyleSheet(nsIStyleSheet* aUAStyleSheet); NS_IMETHOD GetDocument(nsIDocument** aResult); NS_IMETHOD GetPresShell(nsIPresShell** aResult); NS_IMETHOD GetPresContext(nsPresContext** aResult); // nsIContentViewerEdit NS_DECL_NSICONTENTVIEWEREDIT // nsIContentViewerFile NS_DECL_NSICONTENTVIEWERFILE // nsIMarkupDocumentViewer NS_DECL_NSIMARKUPDOCUMENTVIEWER #ifdef NS_PRINTING // nsIWebBrowserPrint NS_DECL_NSIWEBBROWSERPRINT #endif typedef void (*CallChildFunc)(nsIMarkupDocumentViewer* aViewer, void* aClosure); void CallChildren(CallChildFunc aFunc, void* aClosure); // nsIDocumentViewerPrint Printing Methods NS_DECL_NSIDOCUMENTVIEWERPRINT protected: virtual ~DocumentViewerImpl(); private: /** * Creates a view manager, root view, and widget for the root view, setting * mViewManager and mWindow. * @param aSize the initial size in appunits */ nsresult MakeWindow(const nsSize& aSize); nsresult InitInternal(nsIWidget* aParentWidget, nsISupports *aState, nsIDeviceContext* aDeviceContext, const nsRect& aBounds, PRBool aDoCreation, PRBool aInPrintPreview, PRBool aNeedMakeCX = PR_TRUE); /** * @param aDoInitialReflow set to true if you want to kick off the initial * reflow * @param aReenableRefresh set to true if you want this to reenable refresh * before returning; otherwise this will return with refresh disabled * in the view manager */ nsresult InitPresentationStuff(PRBool aDoInitialReflow, PRBool aReenableRefresh); nsresult GetPopupNode(nsIDOMNode** aNode); nsresult GetPopupLinkNode(nsIDOMNode** aNode); nsresult GetPopupImageNode(nsIImageLoadingContent** aNode); void DumpContentToPPM(const char* aFileName); void PrepareToStartLoad(void); nsresult SyncParentSubDocMap(); nsresult GetDocumentSelection(nsISelection **aSelection); nsresult GetClipboardEventTarget(nsIDOMNode **aEventTarget); nsresult FireClipboardEvent(PRUint32 msg, PRBool* aPreventDefault); #ifdef NS_PRINTING // Called when the DocViewer is notified that the state // of Printing or PP has changed void SetIsPrintingInDocShellTree(nsIDocShellTreeNode* aParentNode, PRBool aIsPrintingOrPP, PRBool aStartAtTop); #endif // NS_PRINTING protected: // These return the current shell/prescontext etc. nsIPresShell* GetPresShell(); nsPresContext* GetPresContext(); nsIViewManager* GetViewManager(); // IMPORTANT: The ownership implicit in the following member // variables has been explicitly checked and set using nsCOMPtr // for owning pointers and raw COM interface pointers for weak // (ie, non owning) references. If you add any members to this // class, please make the ownership explicit (pinkerton, scc). nsWeakPtr mContainer; // it owns me! nsCOMPtr mDeviceContext; // ??? can't hurt, but... // the following six items are explicitly in this order // so they will be destroyed in the reverse order (pinkerton, scc) nsCOMPtr mDocument; nsCOMPtr mWindow; // ??? should we really own it? nsCOMPtr mViewManager; nsCOMPtr mPresContext; nsCOMPtr mPresShell; nsCOMPtr mUAStyleSheet; nsCOMPtr mSelectionListener; nsCOMPtr mFocusListener; nsCOMPtr mPreviousViewer; nsCOMPtr mSHEntry; nsIWidget* mParentWidget; // purposely won't be ref counted // mTextZoom/mPageZoom record the textzoom/pagezoom of the first (galley) // presshell only. float mTextZoom; // Text zoom, defaults to 1.0 float mPageZoom; PRInt16 mNumURLStarts; PRInt16 mDestroyRefCount; // a second "refcount" for the document viewer's "destroy" unsigned mEnableRendering : 1; unsigned mStopped : 1; unsigned mLoaded : 1; unsigned mDeferredWindowClose : 1; // document management data // these items are specific to markup documents (html and xml) // may consider splitting these out into a subclass unsigned mIsSticky : 1; unsigned mInPermitUnload : 1; #ifdef NS_PRINTING unsigned mClosingWhilePrinting : 1; #if NS_PRINT_PREVIEW // These data members support delayed printing when the document is loading unsigned mPrintIsPending : 1; unsigned mPrintDocIsFullyLoaded : 1; nsCOMPtr mCachedPrintSettings; nsCOMPtr mCachedPrintWebProgressListner; nsCOMPtr mPrintEngine; #endif // NS_PRINT_PREVIEW #ifdef NS_DEBUG FILE* mDebugFile; #endif // NS_DEBUG #endif // NS_PRINTING /* character set member data */ PRInt32 mHintCharsetSource; nsCString mHintCharset; nsCString mDefaultCharacterSet; nsCString mForceCharacterSet; nsCString mPrevDocCharacterSet; PRPackedBool mIsPageMode; }; //------------------------------------------------------------------ // DocumentViewerImpl //------------------------------------------------------------------ // Class IDs static NS_DEFINE_CID(kViewManagerCID, NS_VIEW_MANAGER_CID); static NS_DEFINE_CID(kWidgetCID, NS_CHILD_CID); //------------------------------------------------------------------ nsresult NS_NewDocumentViewer(nsIDocumentViewer** aResult) { *aResult = new DocumentViewerImpl(); if (!*aResult) { return NS_ERROR_OUT_OF_MEMORY; } NS_ADDREF(*aResult); return NS_OK; } void DocumentViewerImpl::PrepareToStartLoad() { mEnableRendering = PR_TRUE; mStopped = PR_FALSE; mLoaded = PR_FALSE; mDeferredWindowClose = PR_FALSE; #ifdef NS_PRINTING mPrintIsPending = PR_FALSE; mPrintDocIsFullyLoaded = PR_FALSE; mClosingWhilePrinting = PR_FALSE; // Make sure we have destroyed it and cleared the data member if (mPrintEngine) { mPrintEngine->Destroy(); mPrintEngine = nsnull; } #ifdef NS_PRINT_PREVIEW SetIsPrintPreview(PR_FALSE); #endif #ifdef NS_DEBUG mDebugFile = nsnull; #endif #endif // NS_PRINTING } // Note: operator new zeros our memory, so no need to init things to null. DocumentViewerImpl::DocumentViewerImpl() : mTextZoom(1.0), mPageZoom(1.0), mIsSticky(PR_TRUE), mHintCharsetSource(kCharsetUninitialized) { PrepareToStartLoad(); } NS_IMPL_ADDREF(DocumentViewerImpl) NS_IMPL_RELEASE(DocumentViewerImpl) NS_INTERFACE_MAP_BEGIN(DocumentViewerImpl) NS_INTERFACE_MAP_ENTRY(nsIContentViewer) NS_INTERFACE_MAP_ENTRY(nsIDocumentViewer) NS_INTERFACE_MAP_ENTRY(nsIMarkupDocumentViewer) NS_INTERFACE_MAP_ENTRY(nsIContentViewerFile) NS_INTERFACE_MAP_ENTRY(nsIContentViewerEdit) NS_INTERFACE_MAP_ENTRY(nsIDocumentViewerPrint) NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIContentViewer) #ifdef NS_PRINTING NS_INTERFACE_MAP_ENTRY(nsIWebBrowserPrint) #endif NS_INTERFACE_MAP_END DocumentViewerImpl::~DocumentViewerImpl() { if (mDocument) { Close(nsnull); mDocument->Destroy(); } NS_ASSERTION(!mPresShell && !mPresContext, "User did not call nsIContentViewer::Destroy"); if (mPresShell || mPresContext) { // Make sure we don't hand out a reference to the content viewer to // the SHEntry! mSHEntry = nsnull; Destroy(); } // XXX(?) Revoke pending invalidate events } /* * This method is called by the Document Loader once a document has * been created for a particular data stream... The content viewer * must cache this document for later use when Init(...) is called. * * This method is also called when an out of band document.write() happens. * In that case, the document passed in is the same as the previous document. */ NS_IMETHODIMP DocumentViewerImpl::LoadStart(nsISupports *aDoc) { #ifdef NOISY_VIEWER printf("DocumentViewerImpl::LoadStart\n"); #endif nsresult rv = NS_OK; if (!mDocument) { mDocument = do_QueryInterface(aDoc, &rv); } else if (mDocument == aDoc) { // Reset the document viewer's state back to what it was // when the document load started. PrepareToStartLoad(); } return rv; } nsresult DocumentViewerImpl::SyncParentSubDocMap() { nsCOMPtr item(do_QueryReferent(mContainer)); nsCOMPtr pwin(do_GetInterface(item)); nsCOMPtr content; if (mDocument && pwin) { content = do_QueryInterface(pwin->GetFrameElementInternal()); } if (content) { nsCOMPtr parent; item->GetParent(getter_AddRefs(parent)); nsCOMPtr parent_win(do_GetInterface(parent)); if (parent_win) { nsCOMPtr dom_doc; parent_win->GetDocument(getter_AddRefs(dom_doc)); nsCOMPtr parent_doc(do_QueryInterface(dom_doc)); if (parent_doc) { return parent_doc->SetSubDocumentFor(content, mDocument); } } } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetContainer(nsISupports* aContainer) { mContainer = do_GetWeakReference(aContainer); if (mPresContext) { mPresContext->SetContainer(aContainer); } // We're loading a new document into the window where this document // viewer lives, sync the parent document's frame element -> sub // document map return SyncParentSubDocMap(); } NS_IMETHODIMP DocumentViewerImpl::GetContainer(nsISupports** aResult) { NS_ENSURE_ARG_POINTER(aResult); *aResult = nsnull; nsCOMPtr container = do_QueryReferent(mContainer); container.swap(*aResult); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::Init(nsIWidget* aParentWidget, nsIDeviceContext* aDeviceContext, const nsRect& aBounds) { return InitInternal(aParentWidget, nsnull, aDeviceContext, aBounds, PR_TRUE, PR_FALSE); } nsresult DocumentViewerImpl::InitPresentationStuff(PRBool aDoInitialReflow, PRBool aReenableRefresh) { // Create the style set... nsStyleSet *styleSet; nsresult rv = CreateStyleSet(mDocument, &styleSet); NS_ENSURE_SUCCESS(rv, rv); // Now make the shell for the document rv = mDocument->CreateShell(mPresContext, mViewManager, styleSet, getter_AddRefs(mPresShell)); if (NS_FAILED(rv)) { delete styleSet; return rv; } // We're done creating the style set styleSet->EndUpdate(); if (aDoInitialReflow) { // Since InitialReflow() will create frames for *all* items // that are currently in the document tree, we need to flush // any pending notifications to prevent the content sink from // duplicating layout frames for content it has added to the tree // but hasn't notified the document about. (Bug 154018) // // Note that we are flushing before we add mPresShell as an observer // to avoid bogus notifications. mDocument->FlushPendingNotifications(Flush_ContentAndNotify); } mPresShell->BeginObservingDocument(); // Initialize our view manager nsRect bounds; mWindow->GetBounds(bounds); nscoord width = mPresContext->DeviceContext()->UnscaledAppUnitsPerDevPixel() * bounds.width; nscoord height = mPresContext->DeviceContext()->UnscaledAppUnitsPerDevPixel() * bounds.height; mViewManager->DisableRefresh(); mViewManager->SetWindowDimensions(width, height); mPresContext->SetTextZoom(mTextZoom); mPresContext->SetFullZoom(mPageZoom); // Setup default view manager background color // This may be overridden by the docshell with the background color // for the last document loaded into the docshell mViewManager->SetDefaultBackgroundColor(mPresContext->DefaultBackgroundColor()); if (aDoInitialReflow) { nsCOMPtr htmlDoc = do_QueryInterface(mDocument); if (htmlDoc) { nsCOMPtr frameset = do_QueryInterface(mDocument->GetRootContent()); htmlDoc->SetIsFrameset(frameset != nsnull); } nsCOMPtr shellGrip = mPresShell; // Initial reflow mPresShell->InitialReflow(width, height); } else { // Store the visible area so it's available for other callers of // InitialReflow, like nsContentSink::StartLayout. mPresContext->SetVisibleArea(nsRect(0, 0, width, height)); } // Now trigger a refresh if (aReenableRefresh && mEnableRendering && mViewManager) { mViewManager->EnableRefresh(NS_VMREFRESH_IMMEDIATE); } // now register ourselves as a selection listener, so that we get // called when the selection changes in the window nsDocViewerSelectionListener *selectionListener = new nsDocViewerSelectionListener(); NS_ENSURE_TRUE(selectionListener, NS_ERROR_OUT_OF_MEMORY); selectionListener->Init(this); // mSelectionListener is a owning reference mSelectionListener = selectionListener; nsCOMPtr selection; rv = GetDocumentSelection(getter_AddRefs(selection)); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr selPrivate(do_QueryInterface(selection)); rv = selPrivate->AddSelectionListener(mSelectionListener); if (NS_FAILED(rv)) return rv; // Save old listener so we can unregister it nsCOMPtr oldFocusListener = mFocusListener; // focus listener // // now register ourselves as a focus listener, so that we get called // when the focus changes in the window nsDocViewerFocusListener *focusListener; NS_NEWXPCOM(focusListener, nsDocViewerFocusListener); NS_ENSURE_TRUE(focusListener, NS_ERROR_OUT_OF_MEMORY); focusListener->Init(this); // mFocusListener is a strong reference mFocusListener = focusListener; if (mDocument) { rv = mDocument->AddEventListenerByIID(mFocusListener, NS_GET_IID(nsIDOMFocusListener)); NS_ASSERTION(NS_SUCCEEDED(rv), "failed to register focus listener"); if (oldFocusListener) { rv = mDocument->RemoveEventListenerByIID(oldFocusListener, NS_GET_IID(nsIDOMFocusListener)); NS_ASSERTION(NS_SUCCEEDED(rv), "failed to remove focus listener"); } } return NS_OK; } //----------------------------------------------- // This method can be used to initial the "presentation" // The aDoCreation indicates whether it should create // all the new objects or just initialize the existing ones nsresult DocumentViewerImpl::InitInternal(nsIWidget* aParentWidget, nsISupports *aState, nsIDeviceContext* aDeviceContext, const nsRect& aBounds, PRBool aDoCreation, PRBool aInPrintPreview, PRBool aNeedMakeCX /*= PR_TRUE*/) { mParentWidget = aParentWidget; // not ref counted nsresult rv = NS_OK; NS_ENSURE_TRUE(mDocument, NS_ERROR_NULL_POINTER); mDeviceContext = aDeviceContext; PRBool makeCX = PR_FALSE; if (aDoCreation) { if (aParentWidget && !mPresContext) { // Create presentation context if (mIsPageMode) { //Presentation context already created in SetPageMode which is calling this method } else mPresContext = new nsPresContext(mDocument, nsPresContext::eContext_Galley); NS_ENSURE_TRUE(mPresContext, NS_ERROR_OUT_OF_MEMORY); nsresult rv = mPresContext->Init(aDeviceContext); if (NS_FAILED(rv)) { mPresContext = nsnull; return rv; } #if defined(NS_PRINTING) && defined(NS_PRINT_PREVIEW) makeCX = !GetIsPrintPreview() && aNeedMakeCX; // needs to be true except when we are already in PP or we are enabling/disabling paginated mode. #else makeCX = PR_TRUE; #endif } if (mPresContext) { // Create the ViewManager and Root View... // We must do this before we tell the script global object about // this new document since doing that will cause us to re-enter // into nsSubDocumentFrame code through reflows caused by // FlushPendingNotifications() calls down the road... rv = MakeWindow(nsSize(mPresContext->DevPixelsToAppUnits(aBounds.width), mPresContext->DevPixelsToAppUnits(aBounds.height))); NS_ENSURE_SUCCESS(rv, rv); Hide(); #ifdef NS_PRINT_PREVIEW if (mIsPageMode) { // I'm leaving this in a broken state for the moment; we should // be measuring/scaling with the print device context, not the // screen device context, but this is good enough to allow // printing reftests to work. #if 0 nsCOMPtr devspec = do_CreateInstance("@mozilla.org/gfx/devicecontextspec;1", &rv); NS_ENSURE_SUCCESS(rv, rv); // mWindow has been initialized by preceding call to MakeWindow rv = devspec->Init(mWindow, mPresContext->GetPrintSettings(), PR_FALSE); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr devctx = do_CreateInstance("@mozilla.org/gfx/devicecontext;1", &rv); NS_ENSURE_SUCCESS(rv, rv); rv = devctx->InitForPrinting(devspec); NS_ENSURE_SUCCESS(rv, rv); // XXX I'm breaking this code; I'm not sure I really want to mess with // the document viewer at the moment to get the right device context // (this won't break anyone, since page layout mode was never really // usable) #endif double pageWidth = 0, pageHeight = 0; mPresContext->GetPrintSettings()->GetEffectivePageSize(&pageWidth, &pageHeight); mPresContext->SetPageSize( nsSize(mPresContext->TwipsToAppUnits(NSToIntFloor(pageWidth)), mPresContext->TwipsToAppUnits(NSToIntFloor(pageHeight)))); mPresContext->SetIsRootPaginatedDocument(PR_TRUE); mPresContext->SetPageScale(1.0f); } #endif } } nsCOMPtr requestor(do_QueryReferent(mContainer)); if (requestor) { if (mPresContext) { nsCOMPtr linkHandler; requestor->GetInterface(NS_GET_IID(nsILinkHandler), getter_AddRefs(linkHandler)); mPresContext->SetContainer(requestor); mPresContext->SetLinkHandler(linkHandler); } if (!aInPrintPreview) { // Set script-context-owner in the document nsCOMPtr window; requestor->GetInterface(NS_GET_IID(nsPIDOMWindow), getter_AddRefs(window)); if (window) { window->SetNewDocument(mDocument, aState, PR_TRUE); nsJSContext::LoadStart(); } } } if (aDoCreation && mPresContext) { // The ViewManager and Root View was created above (in // MakeWindow())... rv = InitPresentationStuff(!makeCX, !makeCX); } return rv; } // // LoadComplete(aStatus) // // aStatus - The status returned from loading the document. // // This method is called by the container when the document has been // completely loaded. // NS_IMETHODIMP DocumentViewerImpl::LoadComplete(nsresult aStatus) { /* We need to protect ourself against auto-destruction in case the window is closed while processing the OnLoad event. See bug http://bugzilla.mozilla.org/show_bug.cgi?id=78445 for more explanation. */ nsCOMPtr kungFuDeathGrip(this); // Flush out layout so it's up-to-date by the time onload is called. // Note that this could destroy the window, so do this before // checking for our mDocument and its window. if (mPresShell && !mStopped) { // Hold strong ref because this could conceivably run script nsCOMPtr shell = mPresShell; shell->FlushPendingNotifications(Flush_Layout); } nsresult rv = NS_OK; NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); // First, get the window from the document... nsPIDOMWindow *window = mDocument->GetWindow(); // Fail if no window is available... NS_ENSURE_TRUE(window, NS_ERROR_NULL_POINTER); mLoaded = PR_TRUE; // Now, fire either an OnLoad or OnError event to the document... PRBool restoring = PR_FALSE; if(NS_SUCCEEDED(aStatus)) { nsEventStatus status = nsEventStatus_eIgnore; nsEvent event(PR_TRUE, NS_LOAD); event.flags |= NS_EVENT_FLAG_CANT_BUBBLE; // XXX Dispatching to |window|, but using |document| as the target. event.target = mDocument; // If the document presentation is being restored, we don't want to fire // onload to the document content since that would likely confuse scripts // on the page. nsIDocShell *docShell = window->GetDocShell(); NS_ENSURE_TRUE(docShell, NS_ERROR_UNEXPECTED); docShell->GetRestoringDocument(&restoring); if (!restoring) { nsEventDispatcher::Dispatch(window, mPresContext, &event, nsnull, &status); #ifdef MOZ_TIMELINE // if navigator.xul's load is complete, the main nav window is visible // mark that point. //printf("DEBUG: getting uri from document (%p)\n", mDocument.get()); nsIURI *uri = mDocument ? mDocument->GetDocumentURI() : nsnull; if (uri) { //printf("DEBUG: getting spec for uri (%p)\n", uri.get()); nsCAutoString spec; uri->GetSpec(spec); if (spec.EqualsLiteral("chrome://navigator/content/navigator.xul") || spec.EqualsLiteral("chrome://browser/content/browser.xul")) { NS_TIMELINE_MARK("Navigator Window visible now"); } } #endif /* MOZ_TIMELINE */ } } else { // XXX: Should fire error event to the document... } // Notify the document that it has been shown (regardless of whether // it was just loaded). Note: mDocument may be null now if the above // firing of onload caused the document to unload. if (mDocument) mDocument->OnPageShow(restoring); // Now that the document has loaded, we can tell the presshell // to unsuppress painting. if (mPresShell && !mStopped) { nsCOMPtr shellDeathGrip(mPresShell); // bug 378682 mPresShell->UnsuppressPainting(); mPresShell->ScrollToAnchor(); } nsJSContext::LoadEnd(); #ifdef NS_PRINTING // Check to see if someone tried to print during the load if (mPrintIsPending) { mPrintIsPending = PR_FALSE; mPrintDocIsFullyLoaded = PR_TRUE; Print(mCachedPrintSettings, mCachedPrintWebProgressListner); mCachedPrintSettings = nsnull; mCachedPrintWebProgressListner = nsnull; } #endif return rv; } NS_IMETHODIMP DocumentViewerImpl::PermitUnload(PRBool *aPermitUnload) { *aPermitUnload = PR_TRUE; if (!mDocument || mInPermitUnload) { return NS_OK; } // First, get the script global object from the document... nsPIDOMWindow *window = mDocument->GetWindow(); if (!window) { // This is odd, but not fatal NS_WARNING("window not set for document!"); return NS_OK; } NS_ASSERTION(nsContentUtils::IsSafeToRunScript(), "This is unsafe"); // Now, fire an BeforeUnload event to the document and see if it's ok // to unload... nsEventStatus status = nsEventStatus_eIgnore; nsBeforePageUnloadEvent event(PR_TRUE, NS_BEFORE_PAGE_UNLOAD); event.flags |= NS_EVENT_FLAG_CANT_BUBBLE; // XXX Dispatching to |window|, but using |document| as the target. event.target = mDocument; nsresult rv = NS_OK; // In evil cases we might be destroyed while handling the // onbeforeunload event, don't let that happen. (see also bug#331040) nsRefPtr kungFuDeathGrip(this); { // Never permit popups from the beforeunload handler, no matter // how we get here. nsAutoPopupStatePusher popupStatePusher(openAbused, PR_TRUE); mInPermitUnload = PR_TRUE; nsEventDispatcher::Dispatch(window, mPresContext, &event, nsnull, &status); mInPermitUnload = PR_FALSE; } nsCOMPtr docShellNode(do_QueryReferent(mContainer)); if (NS_SUCCEEDED(rv) && (event.flags & NS_EVENT_FLAG_NO_DEFAULT || !event.text.IsEmpty())) { // Ask the user if it's ok to unload the current page nsCOMPtr prompt = do_GetInterface(docShellNode); if (prompt) { nsXPIDLString preMsg, postMsg; rv = nsContentUtils::GetLocalizedString(nsContentUtils::eDOM_PROPERTIES, "OnBeforeUnloadPreMessage", preMsg); rv |= nsContentUtils::GetLocalizedString(nsContentUtils::eDOM_PROPERTIES, "OnBeforeUnloadPostMessage", postMsg); // GetStringFromName can succeed, yet give NULL strings back. if (NS_FAILED(rv) || preMsg.IsEmpty() || postMsg.IsEmpty()) { NS_ERROR("Failed to get strings from dom.properties!"); return NS_OK; } // Limit the length of the text the page can inject into this // dialogue to 1024 characters. PRInt32 len = PR_MIN(event.text.Length(), 1024); nsAutoString msg; if (len == 0) { msg = preMsg + NS_LITERAL_STRING("\n\n") + postMsg; } else { msg = preMsg + NS_LITERAL_STRING("\n\n") + StringHead(event.text, len) + NS_LITERAL_STRING("\n\n") + postMsg; } // This doesn't pass a title, which makes the title be // "Confirm", is that ok, or do we want a localizable title for // this dialogue? if (NS_FAILED(prompt->Confirm(nsnull, msg.get(), aPermitUnload))) { *aPermitUnload = PR_TRUE; } } } if (docShellNode) { PRInt32 childCount; docShellNode->GetChildCount(&childCount); for (PRInt32 i = 0; i < childCount && *aPermitUnload; ++i) { nsCOMPtr item; docShellNode->GetChildAt(i, getter_AddRefs(item)); nsCOMPtr docShell(do_QueryInterface(item)); if (docShell) { nsCOMPtr cv; docShell->GetContentViewer(getter_AddRefs(cv)); if (cv) { cv->PermitUnload(aPermitUnload); } } } } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::PageHide(PRBool aIsUnload) { mEnableRendering = PR_FALSE; if (!mDocument) { return NS_ERROR_NULL_POINTER; } mDocument->OnPageHide(!aIsUnload); if (aIsUnload) { // if Destroy() was called during OnPageHide(), mDocument is nsnull. NS_ENSURE_STATE(mDocument); // First, get the window from the document... nsPIDOMWindow *window = mDocument->GetWindow(); if (!window) { // Fail if no window is available... NS_ERROR("window not set for document!"); return NS_ERROR_NULL_POINTER; } // Now, fire an Unload event to the document... nsEventStatus status = nsEventStatus_eIgnore; nsEvent event(PR_TRUE, NS_PAGE_UNLOAD); event.flags |= NS_EVENT_FLAG_CANT_BUBBLE; // XXX Dispatching to |window|, but using |document| as the target. event.target = mDocument; // Never permit popups from the unload handler, no matter how we get // here. nsAutoPopupStatePusher popupStatePusher(openAbused, PR_TRUE); nsEventDispatcher::Dispatch(window, mPresContext, &event, nsnull, &status); } #ifdef MOZ_XUL // look for open menupopups and close them after the unload event, in case // the unload event listeners open any new popups if (mDocument) nsContentUtils::HidePopupsInDocument(mDocument); #endif return NS_OK; } static void AttachContainerRecurse(nsIDocShell* aShell) { nsCOMPtr viewer; aShell->GetContentViewer(getter_AddRefs(viewer)); nsCOMPtr docViewer = do_QueryInterface(viewer); if (docViewer) { nsCOMPtr doc; docViewer->GetDocument(getter_AddRefs(doc)); if (doc) { doc->SetContainer(aShell); } nsCOMPtr pc; docViewer->GetPresContext(getter_AddRefs(pc)); if (pc) { pc->SetContainer(aShell); pc->SetLinkHandler(nsCOMPtr(do_QueryInterface(aShell))); } nsCOMPtr presShell; docViewer->GetPresShell(getter_AddRefs(presShell)); if (presShell) { presShell->SetForwardingContainer(nsnull); } } // Now recurse through the children nsCOMPtr node = do_QueryInterface(aShell); NS_ASSERTION(node, "docshells must implement nsIDocShellTreeNode"); PRInt32 childCount; node->GetChildCount(&childCount); for (PRInt32 i = 0; i < childCount; ++i) { nsCOMPtr childItem; node->GetChildAt(i, getter_AddRefs(childItem)); AttachContainerRecurse(nsCOMPtr(do_QueryInterface(childItem))); } } NS_IMETHODIMP DocumentViewerImpl::Open(nsISupports *aState, nsISHEntry *aSHEntry) { NS_ENSURE_TRUE(mPresShell, NS_ERROR_NOT_INITIALIZED); // Our container might have gone away while we were closed. // If this is the case, we must fail to open so we don't crash. nsCOMPtr container = do_QueryReferent(mContainer); if (!container) return NS_ERROR_NOT_AVAILABLE; nsRect bounds; mWindow->GetBounds(bounds); nsresult rv = InitInternal(mParentWidget, aState, mDeviceContext, bounds, PR_FALSE, PR_FALSE); NS_ENSURE_SUCCESS(rv, rv); if (mDocument) mDocument->SetContainer(nsCOMPtr(do_QueryReferent(mContainer))); if (mPresShell) mPresShell->SetForwardingContainer(nsnull); // Rehook the child presentations. The child shells are still in // session history, so get them from there. nsCOMPtr item; PRInt32 itemIndex = 0; while (NS_SUCCEEDED(aSHEntry->ChildShellAt(itemIndex++, getter_AddRefs(item))) && item) { AttachContainerRecurse(nsCOMPtr(do_QueryInterface(item))); } SyncParentSubDocMap(); if (mFocusListener && mDocument) { mDocument->AddEventListenerByIID(mFocusListener, NS_GET_IID(nsIDOMFocusListener)); } // XXX re-enable image animations once that works correctly PrepareToStartLoad(); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::Close(nsISHEntry *aSHEntry) { // All callers are supposed to call close to break circular // references. If we do this stuff in the destructor, the // destructor might never be called (especially if we're being // used from JS. mSHEntry = aSHEntry; // Close is also needed to disable scripts during paint suppression, // since we transfer the existing global object to the new document // that is loaded. In the future, the global object may become a proxy // for an object that can be switched in and out so that we don't need // to disable scripts during paint suppression. if (!mDocument) return NS_OK; #if defined(NS_PRINTING) && defined(NS_PRINT_PREVIEW) // Turn scripting back on // after PrintPreview had turned it off if (GetIsPrintPreview() && mPrintEngine) { mPrintEngine->TurnScriptingOn(PR_TRUE); } #endif #ifdef NS_PRINTING // A Close was called while we were printing // so don't clear the ScriptGlobalObject // or clear the mDocument below // Also, do an extra addref to keep the viewer from going away. if (mPrintEngine && !mClosingWhilePrinting) { mClosingWhilePrinting = PR_TRUE; NS_ADDREF_THIS(); } else #endif { // out of band cleanup of webshell mDocument->SetScriptGlobalObject(nsnull); if (!mSHEntry) mDocument->Destroy(); } if (mFocusListener && mDocument) { mDocument->RemoveEventListenerByIID(mFocusListener, NS_GET_IID(nsIDOMFocusListener)); } return NS_OK; } static void DetachContainerRecurse(nsIDocShell *aShell) { // Unhook this docshell's presentation nsCOMPtr viewer; aShell->GetContentViewer(getter_AddRefs(viewer)); nsCOMPtr docViewer = do_QueryInterface(viewer); if (docViewer) { nsCOMPtr doc; docViewer->GetDocument(getter_AddRefs(doc)); if (doc) { doc->SetContainer(nsnull); } nsCOMPtr pc; docViewer->GetPresContext(getter_AddRefs(pc)); if (pc) { pc->SetContainer(nsnull); pc->SetLinkHandler(nsnull); } nsCOMPtr presShell; docViewer->GetPresShell(getter_AddRefs(presShell)); if (presShell) { presShell->SetForwardingContainer(nsWeakPtr(do_GetWeakReference(aShell))); } } // Now recurse through the children nsCOMPtr node = do_QueryInterface(aShell); NS_ASSERTION(node, "docshells must implement nsIDocShellTreeNode"); PRInt32 childCount; node->GetChildCount(&childCount); for (PRInt32 i = 0; i < childCount; ++i) { nsCOMPtr childItem; node->GetChildAt(i, getter_AddRefs(childItem)); DetachContainerRecurse(nsCOMPtr(do_QueryInterface(childItem))); } } NS_IMETHODIMP DocumentViewerImpl::Destroy() { NS_ASSERTION(mDocument, "No document in Destroy()!"); #ifdef NS_PRINTING // Here is where we check to see if the docment was still being prepared // for printing when it was asked to be destroy from someone externally // This usually happens if the document is unloaded while the user is in the Print Dialog // // So we flip the bool to remember that the document is going away // and we can clean up and abort later after returning from the Print Dialog if (mPrintEngine) { if (mPrintEngine->CheckBeforeDestroy()) { return NS_OK; } } #endif // Don't let the document get unloaded while we are printing. // this could happen if we hit the back button during printing. // We also keep the viewer from being cached in session history, since // we require all documents there to be sanitized. if (mDestroyRefCount != 0) { --mDestroyRefCount; return NS_OK; } // If we were told to put ourselves into session history instead of destroy // the presentation, do that now. if (mSHEntry) { if (mPresShell) mPresShell->Freeze(); // Make sure the presentation isn't torn down by Hide(). mSHEntry->SetSticky(mIsSticky); mIsSticky = PR_TRUE; PRBool savePresentation = PR_TRUE; // Remove our root view from the view hierarchy. if (mPresShell) { nsIViewManager *vm = mPresShell->GetViewManager(); if (vm) { nsIView *rootView = nsnull; vm->GetRootView(rootView); if (rootView) { nsIView *rootViewParent = rootView->GetParent(); if (rootViewParent) { nsIViewManager *parentVM = rootViewParent->GetViewManager(); if (parentVM) { parentVM->RemoveChild(rootView); } } } } } #ifdef NS_PRINTING if (mPrintEngine) { // This code was moved earlier to fix a crash when a document was // destroyed while it was in print preview mode, see bug 396024 #ifdef NS_PRINT_PREVIEW PRBool doingPrintPreview; mPrintEngine->GetDoingPrintPreview(&doingPrintPreview); if (doingPrintPreview) { mPrintEngine->FinishPrintPreview(); } #endif mPrintEngine->Destroy(); mPrintEngine = nsnull; } #endif Hide(); // This is after Hide() so that the user doesn't see the inputs clear. if (mDocument) { nsresult rv = mDocument->Sanitize(); if (NS_FAILED(rv)) { // If we failed to sanitize, don't save presentation. savePresentation = PR_FALSE; } } // Reverse ownership. Do this *after* calling sanitize so that sanitize // doesn't cause mutations that make the SHEntry drop the presentation if (savePresentation) { mSHEntry->SetContentViewer(this); } else { mSHEntry->SyncPresentationState(); } nsCOMPtr shEntry = mSHEntry; // we'll need this below mSHEntry = nsnull; // Break the link from the document/presentation to the docshell, so that // link traversals cannot affect the currently-loaded document. // When the presentation is restored, Open() and InitInternal() will reset // these pointers to their original values. if (mDocument) mDocument->SetContainer(nsnull); if (mPresContext) { mPresContext->SetLinkHandler(nsnull); mPresContext->SetContainer(nsnull); } if (mPresShell) mPresShell->SetForwardingContainer(mContainer); // Do the same for our children. Note that we need to get the child // docshells from the SHEntry now; the docshell will have cleared them. nsCOMPtr item; PRInt32 itemIndex = 0; while (NS_SUCCEEDED(shEntry->ChildShellAt(itemIndex++, getter_AddRefs(item))) && item) { DetachContainerRecurse(nsCOMPtr(do_QueryInterface(item))); } return NS_OK; } if (mDocument) { mDocument->Destroy(); mDocument = nsnull; } // All callers are supposed to call destroy to break circular // references. If we do this stuff in the destructor, the // destructor might never be called (especially if we're being // used from JS. // Avoid leaking the old viewer. if (mPreviousViewer) { mPreviousViewer->Destroy(); mPreviousViewer = nsnull; } mDeviceContext = nsnull; if (mPresShell) { // Break circular reference (or something) mPresShell->EndObservingDocument(); nsCOMPtr selection; GetDocumentSelection(getter_AddRefs(selection)); nsCOMPtr selPrivate(do_QueryInterface(selection)); if (selPrivate && mSelectionListener) selPrivate->RemoveSelectionListener(mSelectionListener); mPresShell->Destroy(); mPresShell = nsnull; } if (mPresContext) { mPresContext->SetContainer(nsnull); mPresContext->SetLinkHandler(nsnull); mPresContext = nsnull; } mContainer = nsnull; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::Stop(void) { NS_ASSERTION(mDocument, "Stop called too early or too late"); if (mDocument) { mDocument->StopDocumentLoad(); } if (mEnableRendering && (mLoaded || mStopped) && mPresContext && !mSHEntry) mPresContext->SetImageAnimationMode(imgIContainer::kDontAnimMode); mStopped = PR_TRUE; if (!mLoaded && mPresShell) { // Well, we might as well paint what we have so far. nsCOMPtr shellDeathGrip(mPresShell); // bug 378682 mPresShell->UnsuppressPainting(); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetDOMDocument(nsIDOMDocument **aResult) { NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); return CallQueryInterface(mDocument, aResult); } NS_IMETHODIMP DocumentViewerImpl::SetDOMDocument(nsIDOMDocument *aDocument) { // Assumptions: // // 1) this document viewer has been initialized with a call to Init(). // 2) the stylesheets associated with the document have been added // to the document. // XXX Right now, this method assumes that the layout of the current // document hasn't started yet. More cleanup will probably be // necessary to make this method work for the case when layout *has* // occurred for the current document. // That work can happen when and if it is needed. nsresult rv; if (!aDocument) return NS_ERROR_NULL_POINTER; nsCOMPtr newDoc = do_QueryInterface(aDocument, &rv); if (NS_FAILED(rv)) return rv; // Set new container nsCOMPtr container = do_QueryReferent(mContainer); newDoc->SetContainer(container); if (mDocument != newDoc) { // Replace the old document with the new one. Do this only when // the new document really is a new document. mDocument = newDoc; // Set the script global object on the new document nsCOMPtr window = do_GetInterface(container); if (window) { window->SetNewDocument(newDoc, nsnull, PR_TRUE); } // Clear the list of old child docshells. CChild docshells for the new // document will be constructed as frames are created. nsCOMPtr node = do_QueryInterface(container); if (node) { PRInt32 count; node->GetChildCount(&count); for (PRInt32 i = 0; i < count; ++i) { nsCOMPtr child; node->GetChildAt(0, getter_AddRefs(child)); node->RemoveChild(child); } } } rv = SyncParentSubDocMap(); NS_ENSURE_SUCCESS(rv, rv); // Replace the current pres shell with a new shell for the new document nsCOMPtr linkHandler; if (mPresShell) { nsSize currentSize(0, 0); if (mViewManager) { mViewManager->GetWindowDimensions(¤tSize.width, ¤tSize.height); } if (mPresContext) { // Save the linkhandler (nsPresShell::Destroy removes it from // mPresContext). linkHandler = mPresContext->GetLinkHandler(); } mPresShell->EndObservingDocument(); mPresShell->Destroy(); mPresShell = nsnull; // This destroys the root view because it was associated with the root frame, // which has been torn down. Recreate the viewmanager and root view. MakeWindow(currentSize); } // And if we're already given a prescontext... if (mPresContext) { // If we had a linkHandler and it got removed, put it back. if (linkHandler) { mPresContext->SetLinkHandler(linkHandler); } rv = InitPresentationStuff(PR_FALSE, PR_TRUE); } return rv; } NS_IMETHODIMP DocumentViewerImpl::SetUAStyleSheet(nsIStyleSheet* aUAStyleSheet) { NS_ASSERTION(aUAStyleSheet, "unexpected null pointer"); nsCOMPtr sheet(do_QueryInterface(aUAStyleSheet)); if (sheet) { nsCOMPtr newSheet; sheet->Clone(nsnull, nsnull, nsnull, nsnull, getter_AddRefs(newSheet)); mUAStyleSheet = newSheet; } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetDocument(nsIDocument** aResult) { NS_IF_ADDREF(*aResult = mDocument); return NS_OK; } nsIPresShell* DocumentViewerImpl::GetPresShell() { if (!GetIsPrintPreview()) { return mPresShell; } NS_ENSURE_TRUE(mDocument, nsnull); nsCOMPtr shell; nsCOMPtr currentShell; nsPresShellIterator iter(mDocument); while ((shell = iter.GetNextShell())) { currentShell.swap(shell); } return currentShell.get(); } nsPresContext* DocumentViewerImpl::GetPresContext() { if (!GetIsPrintPreview()) { return mPresContext; } nsIPresShell* shell = GetPresShell(); return shell ? shell->GetPresContext() : nsnull; } nsIViewManager* DocumentViewerImpl::GetViewManager() { if (!GetIsPrintPreview()) { return mViewManager; } nsIPresShell* shell = GetPresShell(); return shell ? shell->GetViewManager() : nsnull; } NS_IMETHODIMP DocumentViewerImpl::GetPresShell(nsIPresShell** aResult) { nsIPresShell* shell = GetPresShell(); NS_IF_ADDREF(*aResult = shell); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetPresContext(nsPresContext** aResult) { nsPresContext* pc = GetPresContext(); NS_IF_ADDREF(*aResult = pc); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetBounds(nsRect& aResult) { NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); NS_PRECONDITION(mWindow, "null window"); if (mWindow) { mWindow->GetBounds(aResult); } else { aResult.SetRect(0, 0, 0, 0); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetPreviousViewer(nsIContentViewer** aViewer) { *aViewer = mPreviousViewer; NS_IF_ADDREF(*aViewer); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetPreviousViewer(nsIContentViewer* aViewer) { // NOTE: |Show| sets |mPreviousViewer| to null without calling this // function. if (aViewer) { NS_ASSERTION(!mPreviousViewer, "can't set previous viewer when there already is one"); // In a multiple chaining situation (which occurs when running a thrashing // test like i-bench or jrgm's tests with no delay), we can build up a // whole chain of viewers. In order to avoid this, we always set our previous // viewer to the MOST previous viewer in the chain, and then dump the intermediate // link from the chain. This ensures that at most only 2 documents are alive // and undestroyed at any given time (the one that is showing and the one that // is loading with painting suppressed). // It's very important that if this ever gets changed the code // before the RestorePresentation call in nsDocShell::InternalLoad // be changed accordingly. nsCOMPtr prevViewer; aViewer->GetPreviousViewer(getter_AddRefs(prevViewer)); if (prevViewer) { aViewer->SetPreviousViewer(nsnull); aViewer->Destroy(); return SetPreviousViewer(prevViewer); } } mPreviousViewer = aViewer; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetBounds(const nsRect& aBounds) { NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); if (mWindow) { // Don't have the widget repaint. Layout will generate repaint requests // during reflow mWindow->Resize(aBounds.x, aBounds.y, aBounds.width, aBounds.height, PR_FALSE); } // If there's a previous viewer, it's the one that's actually showing, // so be sure to resize it as well so it paints over the right area. // This may slow down the performance of the new page load, but resize // during load is also probably a relatively unusual condition // relating to things being hidden while something is loaded. It so // happens that Firefox does this a good bit with its infobar, and it // looks ugly if we don't do this. if (mPreviousViewer) mPreviousViewer->SetBounds(aBounds); #if defined(NS_PRINTING) && defined(NS_PRINT_PREVIEW) if (GetIsPrintPreview() && !mPrintEngine->GetIsCreatingPrintPreview()) { mPrintEngine->GetPrintPreviewWindow()->Resize(aBounds.x, aBounds.y, aBounds.width, aBounds.height, PR_FALSE); } #endif return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::Move(PRInt32 aX, PRInt32 aY) { NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); NS_PRECONDITION(mWindow, "null window"); if (mWindow) { mWindow->Move(aX, aY); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::Show(void) { NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); // We don't need the previous viewer anymore since we're not // displaying it. if (mPreviousViewer) { // This little dance *may* only be to keep // PresShell::EndObservingDocument happy, but I'm not sure. nsCOMPtr prevViewer(mPreviousViewer); mPreviousViewer = nsnull; prevViewer->Destroy(); // Make sure we don't have too many cached ContentViewers nsCOMPtr treeItem = do_QueryReferent(mContainer); if (treeItem) { // We need to find the root DocShell since only that object has an // SHistory and we need the SHistory to evict content viewers nsCOMPtr root; treeItem->GetSameTypeRootTreeItem(getter_AddRefs(root)); nsCOMPtr webNav = do_QueryInterface(root); nsCOMPtr history; webNav->GetSessionHistory(getter_AddRefs(history)); nsCOMPtr historyInt = do_QueryInterface(history); if (historyInt) { PRInt32 prevIndex,loadedIndex; nsCOMPtr docShell = do_QueryInterface(treeItem); docShell->GetPreviousTransIndex(&prevIndex); docShell->GetLoadedTransIndex(&loadedIndex); #ifdef DEBUG_PAGE_CACHE printf("About to evict content viewers: prev=%d, loaded=%d\n", prevIndex, loadedIndex); #endif historyInt->EvictContentViewers(prevIndex, loadedIndex); } } } if (mWindow) { mWindow->Show(PR_TRUE); } if (mDocument && !mPresShell && !mWindow) { nsresult rv; nsCOMPtr base_win(do_QueryReferent(mContainer)); NS_ENSURE_TRUE(base_win, NS_ERROR_UNEXPECTED); base_win->GetParentWidget(&mParentWidget); NS_ENSURE_TRUE(mParentWidget, NS_ERROR_UNEXPECTED); mParentWidget->Release(); // GetParentWidget AddRefs, but mParentWidget is weak mDeviceContext = mParentWidget->GetDeviceContext(); // Create presentation context NS_ASSERTION(!mPresContext, "Shouldn't have a prescontext if we have no shell!"); mPresContext = new nsPresContext(mDocument, nsPresContext::eContext_Galley); NS_ENSURE_TRUE(mPresContext, NS_ERROR_OUT_OF_MEMORY); rv = mPresContext->Init(mDeviceContext); if (NS_FAILED(rv)) { mPresContext = nsnull; return rv; } nsRect tbounds; mParentWidget->GetBounds(tbounds); rv = MakeWindow(nsSize(mPresContext->DevPixelsToAppUnits(tbounds.width), mPresContext->DevPixelsToAppUnits(tbounds.height))); if (NS_FAILED(rv)) return rv; if (mPresContext && base_win) { nsCOMPtr linkHandler(do_GetInterface(base_win)); if (linkHandler) { mPresContext->SetLinkHandler(linkHandler); } mPresContext->SetContainer(base_win); } if (mPresContext) { Hide(); rv = InitPresentationStuff(mDocument->MayStartLayout(), mDocument->MayStartLayout()); } // If we get here the document load has already started and the // window is shown because some JS on the page caused it to be // shown... nsCOMPtr shellDeathGrip(mPresShell); // bug 378682 mPresShell->UnsuppressPainting(); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::Hide(void) { NS_PRECONDITION(mWindow, "null window"); if (mWindow) { mWindow->Show(PR_FALSE); } if (!mPresShell) return NS_OK; NS_ASSERTION(mPresContext, "Can't have a presshell and no prescontext!"); // Avoid leaking the old viewer. if (mPreviousViewer) { mPreviousViewer->Destroy(); mPreviousViewer = nsnull; } if (mIsSticky) { // This window is sticky, that means that it might be shown again // and we don't want the presshell n' all that to be thrown away // just because the window is hidden. return NS_OK; } // Break circular reference (or something) mPresShell->EndObservingDocument(); nsCOMPtr selection; GetDocumentSelection(getter_AddRefs(selection)); nsCOMPtr selPrivate(do_QueryInterface(selection)); if (selPrivate && mSelectionListener) { selPrivate->RemoveSelectionListener(mSelectionListener); } nsCOMPtr docShell(do_QueryReferent(mContainer)); if (docShell) { PRBool saveLayoutState = PR_FALSE; docShell->GetShouldSaveLayoutState(&saveLayoutState); if (saveLayoutState) { nsCOMPtr layoutState; mPresShell->CaptureHistoryState(getter_AddRefs(layoutState), PR_TRUE); } } mPresShell->Destroy(); // Clear weak refs mPresContext->SetContainer(nsnull); mPresContext->SetLinkHandler(nsnull); mPresShell = nsnull; mPresContext = nsnull; mViewManager = nsnull; mWindow = nsnull; mDeviceContext = nsnull; mParentWidget = nsnull; nsCOMPtr base_win(do_QueryReferent(mContainer)); if (base_win) { base_win->SetParentWidget(nsnull); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetEnableRendering(PRBool aOn) { NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); mEnableRendering = aOn; if (mViewManager) { if (aOn) { mViewManager->EnableRefresh(NS_VMREFRESH_IMMEDIATE); nsIView* view; mViewManager->GetRootView(view); // views are not refCounted if (view) { mViewManager->UpdateView(view, NS_VMREFRESH_IMMEDIATE); } } else { mViewManager->DisableRefresh(); } } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetSticky(PRBool *aSticky) { *aSticky = mIsSticky; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetSticky(PRBool aSticky) { mIsSticky = aSticky; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetEnableRendering(PRBool* aResult) { NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); NS_PRECONDITION(nsnull != aResult, "null OUT ptr"); if (aResult) { *aResult = mEnableRendering; } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::RequestWindowClose(PRBool* aCanClose) { #ifdef NS_PRINTING if (mPrintIsPending || (mPrintEngine && mPrintEngine->GetIsPrinting())) { *aCanClose = PR_FALSE; mDeferredWindowClose = PR_TRUE; } else #endif *aCanClose = PR_TRUE; return NS_OK; } PR_STATIC_CALLBACK(PRBool) AppendAgentSheet(nsIStyleSheet *aSheet, void *aData) { nsStyleSet *styleSet = static_cast(aData); styleSet->AppendStyleSheet(nsStyleSet::eAgentSheet, aSheet); return PR_TRUE; } PR_STATIC_CALLBACK(PRBool) PrependUserSheet(nsIStyleSheet *aSheet, void *aData) { nsStyleSet *styleSet = static_cast(aData); styleSet->PrependStyleSheet(nsStyleSet::eUserSheet, aSheet); return PR_TRUE; } nsresult DocumentViewerImpl::CreateStyleSet(nsIDocument* aDocument, nsStyleSet** aStyleSet) { // Make sure this does the same thing as PresShell::AddSheet wrt ordering. // this should eventually get expanded to allow for creating // different sets for different media if (!mUAStyleSheet) { NS_WARNING("unable to load UA style sheet"); } nsStyleSet *styleSet = new nsStyleSet(); if (!styleSet) { return NS_ERROR_OUT_OF_MEMORY; } styleSet->BeginUpdate(); // The document will fill in the document sheets when we create the presshell // Handle the user sheets. nsCOMPtr docShell(do_QueryReferent(mContainer)); PRInt32 shellType; docShell->GetItemType(&shellType); nsICSSStyleSheet* sheet = nsnull; if (shellType == nsIDocShellTreeItem::typeChrome) { sheet = nsLayoutStylesheetCache::UserChromeSheet(); } else { sheet = nsLayoutStylesheetCache::UserContentSheet(); } if (sheet) styleSet->AppendStyleSheet(nsStyleSet::eUserSheet, sheet); // Append chrome sheets (scrollbars + forms). PRBool shouldOverride = PR_FALSE; nsCOMPtr ds(do_QueryInterface(docShell)); nsCOMPtr chromeHandler; nsCOMPtr uri; nsCOMPtr csssheet; ds->GetChromeEventHandler(getter_AddRefs(chromeHandler)); if (chromeHandler) { nsCOMPtr elt(do_QueryInterface(chromeHandler)); nsCOMPtr content(do_QueryInterface(elt)); if (elt && content) { nsCOMPtr baseURI = content->GetBaseURI(); nsAutoString sheets; elt->GetAttribute(NS_LITERAL_STRING("usechromesheets"), sheets); if (!sheets.IsEmpty() && baseURI) { nsCOMPtr cssLoader; NS_NewCSSLoader(getter_AddRefs(cssLoader)); char *str = ToNewCString(sheets); char *newStr = str; char *token; while ( (token = nsCRT::strtok(newStr, ", ", &newStr)) ) { NS_NewURI(getter_AddRefs(uri), nsDependentCString(token), nsnull, baseURI); if (!uri) continue; cssLoader->LoadSheetSync(uri, getter_AddRefs(csssheet)); if (!sheet) continue; styleSet->PrependStyleSheet(nsStyleSet::eAgentSheet, csssheet); shouldOverride = PR_TRUE; } nsMemory::Free(str); } } } if (!shouldOverride) { sheet = nsLayoutStylesheetCache::ScrollbarsSheet(); if (sheet) { styleSet->PrependStyleSheet(nsStyleSet::eAgentSheet, sheet); } } sheet = nsLayoutStylesheetCache::FormsSheet(); if (sheet) { styleSet->PrependStyleSheet(nsStyleSet::eAgentSheet, sheet); } if (mUAStyleSheet) { styleSet->PrependStyleSheet(nsStyleSet::eAgentSheet, mUAStyleSheet); } nsCOMPtr dummy = do_GetService(NS_STYLESHEETSERVICE_CONTRACTID); nsStyleSheetService *sheetService = nsStyleSheetService::gInstance; if (sheetService) { sheetService->AgentStyleSheets()->EnumerateForwards(AppendAgentSheet, styleSet); sheetService->UserStyleSheets()->EnumerateBackwards(PrependUserSheet, styleSet); } // Caller will handle calling EndUpdate, per contract. *aStyleSet = styleSet; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::ClearHistoryEntry() { mSHEntry = nsnull; return NS_OK; } //------------------------------------------------------- nsresult DocumentViewerImpl::MakeWindow(const nsSize& aSize) { nsresult rv; mViewManager = do_CreateInstance(kViewManagerCID, &rv); if (NS_FAILED(rv)) return rv; nsIDeviceContext *dx = mPresContext->DeviceContext(); rv = mViewManager->Init(dx); if (NS_FAILED(rv)) return rv; // Create a child window of the parent that is our "root view/window" // if aParentWidget has a view, we'll hook our view manager up to its view tree nsIView* containerView = nsIView::GetViewFor(mParentWidget); if (containerView) { // see if the containerView has already been hooked into a foreign view manager hierarchy // if it has, then we have to hook into the hierarchy too otherwise bad things will happen. nsIViewManager* containerVM = containerView->GetViewManager(); nsIView* pView = containerView; do { pView = pView->GetParent(); } while (pView && pView->GetViewManager() == containerVM); if (!pView) { // OK, so the container is not already hooked up into a foreign view manager hierarchy. // That means we can choose not to hook ourselves up. // // If the parent container is a chrome shell and we are a content shell // then we won't hook into its view // tree. This will improve performance a little bit (especially given scrolling/painting perf bugs) // but is really just for peace of mind. This check can be removed if we want to support fancy // chrome effects like transparent controls floating over content, transparent Web browsers, and // things like that, and the perf bugs are fixed. nsCOMPtr container(do_QueryReferent(mContainer)); nsCOMPtr sameTypeParent; if (container) { container->GetSameTypeParent(getter_AddRefs(sameTypeParent)); } if (!sameTypeParent) { containerView = nsnull; } } } // The root view is always at 0,0. nsRect tbounds(nsPoint(0, 0), aSize); // Create a view nsIView* view = mViewManager->CreateView(tbounds, containerView); if (!view) return NS_ERROR_OUT_OF_MEMORY; // pass in a native widget to be the parent widget ONLY if the view hierarchy will stand alone. // otherwise the view will find its own parent widget and "do the right thing" to // establish a parent/child widget relationship rv = view->CreateWidget(kWidgetCID, nsnull, containerView != nsnull ? nsnull : mParentWidget->GetNativeData(NS_NATIVE_WIDGET), PR_TRUE, PR_FALSE); if (NS_FAILED(rv)) return rv; // Setup hierarchical relationship in view manager mViewManager->SetRootView(view); mWindow = view->GetWidget(); // This SetFocus is necessary so the Arrow Key and Page Key events // go to the scrolled view as soon as the Window is created instead of going to // the browser window (this enables keyboard scrolling of the document) // mWindow->SetFocus(); return rv; } // Return the selection for the document. Note that text fields have their // own selection, which cannot be accessed with this method. Use // mPresShell->GetSelectionForCopy() instead. nsresult DocumentViewerImpl::GetDocumentSelection(nsISelection **aSelection) { NS_ENSURE_ARG_POINTER(aSelection); if (!mPresShell) { return NS_ERROR_NOT_INITIALIZED; } nsCOMPtr selcon; selcon = do_QueryInterface(mPresShell); if (selcon) return selcon->GetSelection(nsISelectionController::SELECTION_NORMAL, aSelection); return NS_ERROR_FAILURE; } /* ======================================================================================== * nsIContentViewerEdit * ======================================================================================== */ NS_IMETHODIMP DocumentViewerImpl::Search() { // Nothing to do here. return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetSearchable(PRBool *aSearchable) { // Nothing to do here. *aSearchable = PR_FALSE; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::ClearSelection() { nsresult rv; nsCOMPtr selection; // use mPresShell->GetSelectionForCopy() ? rv = GetDocumentSelection(getter_AddRefs(selection)); if (NS_FAILED(rv)) return rv; return selection->CollapseToStart(); } NS_IMETHODIMP DocumentViewerImpl::SelectAll() { // XXX this is a temporary implementation copied from nsWebShell // for now. I think nsDocument and friends should have some helper // functions to make this easier. nsCOMPtr selection; nsresult rv; // use mPresShell->GetSelectionForCopy() ? rv = GetDocumentSelection(getter_AddRefs(selection)); if (NS_FAILED(rv)) return rv; nsCOMPtr htmldoc = do_QueryInterface(mDocument); nsCOMPtr bodyNode; if (htmldoc) { nsCOMPtrbodyElement; rv = htmldoc->GetBody(getter_AddRefs(bodyElement)); if (NS_FAILED(rv) || !bodyElement) return rv; bodyNode = do_QueryInterface(bodyElement); } else if (mDocument) { bodyNode = do_QueryInterface(mDocument->GetRootContent()); } if (!bodyNode) return NS_ERROR_FAILURE; rv = selection->RemoveAllRanges(); if (NS_FAILED(rv)) return rv; rv = selection->SelectAllChildren(bodyNode); return rv; } NS_IMETHODIMP DocumentViewerImpl::CopySelection() { PRBool preventDefault; nsresult rv = FireClipboardEvent(NS_COPY, &preventDefault); if (NS_FAILED(rv) || preventDefault) return rv; return mPresShell->DoCopy(); } NS_IMETHODIMP DocumentViewerImpl::CopyLinkLocation() { NS_ENSURE_TRUE(mPresShell, NS_ERROR_NOT_INITIALIZED); nsCOMPtr node; GetPopupLinkNode(getter_AddRefs(node)); // make noise if we're not in a link NS_ENSURE_TRUE(node, NS_ERROR_FAILURE); nsAutoString locationText; nsresult rv = mPresShell->GetLinkLocation(node, locationText); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr clipboard(do_GetService("@mozilla.org/widget/clipboardhelper;1", &rv)); NS_ENSURE_SUCCESS(rv, rv); // copy the href onto the clipboard return clipboard->CopyString(locationText); } NS_IMETHODIMP DocumentViewerImpl::CopyImage(PRInt32 aCopyFlags) { NS_ENSURE_TRUE(mPresShell, NS_ERROR_NOT_INITIALIZED); nsCOMPtr node; GetPopupImageNode(getter_AddRefs(node)); // make noise if we're not in an image NS_ENSURE_TRUE(node, NS_ERROR_FAILURE); return nsCopySupport::ImageCopy(node, aCopyFlags); } nsresult DocumentViewerImpl::GetClipboardEventTarget(nsIDOMNode** aEventTarget) { NS_ENSURE_ARG_POINTER(aEventTarget); *aEventTarget = nsnull; if (!mPresShell) return NS_ERROR_NOT_INITIALIZED; nsCOMPtr sel; nsresult rv = mPresShell->GetSelectionForCopy(getter_AddRefs(sel)); if (NS_FAILED(rv)) return rv; if (!sel) return NS_ERROR_FAILURE; return nsCopySupport::GetClipboardEventTarget(sel, aEventTarget); } nsresult DocumentViewerImpl::FireClipboardEvent(PRUint32 msg, PRBool* aPreventDefault) { *aPreventDefault = PR_FALSE; NS_ENSURE_TRUE(mPresContext, NS_ERROR_NOT_INITIALIZED); NS_ENSURE_TRUE(mPresShell, NS_ERROR_NOT_INITIALIZED); // It seems to be unsafe to fire an event handler during reflow (bug 393696) PRBool isReflowing = PR_TRUE; nsresult rv = mPresShell->IsReflowLocked(&isReflowing); if (NS_FAILED(rv) || isReflowing) return NS_OK; nsCOMPtr eventTarget; rv = GetClipboardEventTarget(getter_AddRefs(eventTarget)); if (NS_FAILED(rv)) // On failure to get event target, just forget about it and don't fire. return NS_OK; nsEventStatus status = nsEventStatus_eIgnore; nsEvent evt(PR_TRUE, msg); nsEventDispatcher::Dispatch(eventTarget, mPresContext, &evt, nsnull, &status); // if event handler return'd false (PreventDefault) if (status == nsEventStatus_eConsumeNoDefault) *aPreventDefault = PR_TRUE; // Ensure that the calling function can use mPresShell -- if the event // handler closed this window, mPresShell will be gone. NS_ENSURE_STATE(mPresShell); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetCopyable(PRBool *aCopyable) { NS_ENSURE_ARG_POINTER(aCopyable); *aCopyable = PR_FALSE; NS_ENSURE_STATE(mPresShell); nsCOMPtr selection; nsresult rv = mPresShell->GetSelectionForCopy(getter_AddRefs(selection)); if (NS_FAILED(rv)) return rv; PRBool isCollapsed; selection->GetIsCollapsed(&isCollapsed); *aCopyable = !isCollapsed; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::CutSelection() { // preventDefault's value is ignored because cut from the document has no // default behaviour. PRBool preventDefault; return FireClipboardEvent(NS_CUT, &preventDefault); } NS_IMETHODIMP DocumentViewerImpl::GetCutable(PRBool *aCutable) { NS_ENSURE_ARG_POINTER(aCutable); *aCutable = PR_FALSE; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::Paste() { // preventDefault's value is ignored because paste into the document has no // default behaviour. PRBool preventDefault; return FireClipboardEvent(NS_PASTE, &preventDefault); } NS_IMETHODIMP DocumentViewerImpl::GetPasteable(PRBool *aPasteable) { NS_ENSURE_ARG_POINTER(aPasteable); *aPasteable = PR_FALSE; return NS_OK; } /* AString getContents (in string mimeType, in boolean selectionOnly); */ NS_IMETHODIMP DocumentViewerImpl::GetContents(const char *mimeType, PRBool selectionOnly, nsAString& aOutValue) { NS_ENSURE_TRUE(mPresShell, NS_ERROR_NOT_INITIALIZED); return mPresShell->DoGetContents(nsDependentCString(mimeType), 0, selectionOnly, aOutValue); } /* readonly attribute boolean canGetContents; */ NS_IMETHODIMP DocumentViewerImpl::GetCanGetContents(PRBool *aCanGetContents) { return GetCopyable(aCanGetContents); } #ifdef XP_MAC #pragma mark - #endif /* ======================================================================================== * nsIContentViewerFile * ======================================================================================== */ /** --------------------------------------------------- * See documentation above in the nsIContentViewerfile class definition * @update 01/24/00 dwc */ NS_IMETHODIMP DocumentViewerImpl::Print(PRBool aSilent, FILE * aDebugFile, nsIPrintSettings* aPrintSettings) { #ifdef NS_PRINTING nsCOMPtr printSettings; #ifdef NS_DEBUG nsresult rv = NS_ERROR_FAILURE; mDebugFile = aDebugFile; // if they don't pass in a PrintSettings, then make one // it will have all the default values printSettings = aPrintSettings; nsCOMPtr printOptions = do_GetService(sPrintOptionsContractID, &rv); if (NS_SUCCEEDED(rv)) { // if they don't pass in a PrintSettings, then make one if (printSettings == nsnull) { printOptions->CreatePrintSettings(getter_AddRefs(printSettings)); } NS_ASSERTION(printSettings, "You can't PrintPreview without a PrintSettings!"); } if (printSettings) printSettings->SetPrintSilent(aSilent); if (printSettings) printSettings->SetShowPrintProgress(PR_FALSE); #endif return Print(printSettings, nsnull); #else return NS_ERROR_FAILURE; #endif } /* [noscript] void printWithParent (in nsIDOMWindowInternal aParentWin, in nsIPrintSettings aThePrintSettings, in nsIWebProgressListener aWPListener); */ NS_IMETHODIMP DocumentViewerImpl::PrintWithParent(nsIDOMWindowInternal *aParentWin, nsIPrintSettings *aThePrintSettings, nsIWebProgressListener *aWPListener) { #ifdef NS_PRINTING return Print(aThePrintSettings, aWPListener); #else return NS_ERROR_FAILURE; #endif } // nsIContentViewerFile interface NS_IMETHODIMP DocumentViewerImpl::GetPrintable(PRBool *aPrintable) { NS_ENSURE_ARG_POINTER(aPrintable); *aPrintable = !GetIsPrinting(); return NS_OK; } //***************************************************************************** // nsIMarkupDocumentViewer //***************************************************************************** NS_IMETHODIMP DocumentViewerImpl::ScrollToNode(nsIDOMNode* aNode) { NS_ENSURE_ARG(aNode); NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); nsCOMPtr presShell; NS_ENSURE_SUCCESS(GetPresShell(getter_AddRefs(presShell)), NS_ERROR_FAILURE); // Get the nsIContent interface, because that's what we need to // get the primary frame nsCOMPtr content(do_QueryInterface(aNode)); NS_ENSURE_TRUE(content, NS_ERROR_FAILURE); // Tell the PresShell to scroll to the primary frame of the content. NS_ENSURE_SUCCESS(presShell->ScrollContentIntoView(content, NS_PRESSHELL_SCROLL_TOP, NS_PRESSHELL_SCROLL_ANYWHERE), NS_ERROR_FAILURE); return NS_OK; } void DocumentViewerImpl::CallChildren(CallChildFunc aFunc, void* aClosure) { nsCOMPtr docShellNode(do_QueryReferent(mContainer)); if (docShellNode) { PRInt32 i; PRInt32 n; docShellNode->GetChildCount(&n); for (i=0; i < n; i++) { nsCOMPtr child; docShellNode->GetChildAt(i, getter_AddRefs(child)); nsCOMPtr childAsShell(do_QueryInterface(child)); NS_ASSERTION(childAsShell, "null child in docshell"); if (childAsShell) { nsCOMPtr childCV; childAsShell->GetContentViewer(getter_AddRefs(childCV)); if (childCV) { nsCOMPtr markupCV = do_QueryInterface(childCV); if (markupCV) { (*aFunc)(markupCV, aClosure); } } } } } } struct ZoomInfo { float mZoom; }; static void SetChildTextZoom(nsIMarkupDocumentViewer* aChild, void* aClosure) { struct ZoomInfo* ZoomInfo = (struct ZoomInfo*) aClosure; aChild->SetTextZoom(ZoomInfo->mZoom); } static void SetChildFullZoom(nsIMarkupDocumentViewer* aChild, void* aClosure) { struct ZoomInfo* ZoomInfo = (struct ZoomInfo*) aClosure; aChild->SetFullZoom(ZoomInfo->mZoom); } NS_IMETHODIMP DocumentViewerImpl::SetTextZoom(float aTextZoom) { if (!GetIsPrintPreview()) { mTextZoom = aTextZoom; } nsIViewManager::UpdateViewBatch batch(GetViewManager()); // Set the text zoom on all children of mContainer (even if our zoom didn't // change, our children's zoom may be different, though it would be unusual). // Do this first, in case kids are auto-sizing and post reflow commands on // our presshell (which should be subsumed into our own style change reflow). struct ZoomInfo ZoomInfo = { aTextZoom }; CallChildren(SetChildTextZoom, &ZoomInfo); // Now change our own zoom nsPresContext* pc = GetPresContext(); if (pc && aTextZoom != mPresContext->TextZoom()) { pc->SetTextZoom(aTextZoom); } batch.EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetTextZoom(float* aTextZoom) { NS_ENSURE_ARG_POINTER(aTextZoom); nsPresContext* pc = GetPresContext(); *aTextZoom = pc ? pc->TextZoom() : 1.0f; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetFullZoom(float aFullZoom) { if (!GetIsPrintPreview()) { mPageZoom = aFullZoom; } nsIViewManager::UpdateViewBatch batch(GetViewManager()); struct ZoomInfo ZoomInfo = { aFullZoom }; CallChildren(SetChildFullZoom, &ZoomInfo); nsPresContext* pc = GetPresContext(); if (pc) { pc->SetFullZoom(aFullZoom); } batch.EndUpdateViewBatch(NS_VMREFRESH_NO_SYNC); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetFullZoom(float* aFullZoom) { NS_ENSURE_ARG_POINTER(aFullZoom); nsPresContext* pc = GetPresContext(); *aFullZoom = pc ? pc->GetFullZoom() : 1.0f; return NS_OK; } static void SetChildAuthorStyleDisabled(nsIMarkupDocumentViewer* aChild, void* aClosure) { PRBool styleDisabled = *static_cast(aClosure); aChild->SetAuthorStyleDisabled(styleDisabled); } NS_IMETHODIMP DocumentViewerImpl::SetAuthorStyleDisabled(PRBool aStyleDisabled) { if (mPresShell) { mPresShell->SetAuthorStyleDisabled(aStyleDisabled); } CallChildren(SetChildAuthorStyleDisabled, &aStyleDisabled); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetAuthorStyleDisabled(PRBool* aStyleDisabled) { if (mPresShell) { *aStyleDisabled = mPresShell->GetAuthorStyleDisabled(); } else { *aStyleDisabled = PR_FALSE; } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetDefaultCharacterSet(nsACString& aDefaultCharacterSet) { NS_ENSURE_STATE(nsCOMPtr(do_QueryReferent(mContainer))); if (mDefaultCharacterSet.IsEmpty()) { const nsAdoptingString& defCharset = nsContentUtils::GetLocalizedStringPref("intl.charset.default"); if (!defCharset.IsEmpty()) LossyCopyUTF16toASCII(defCharset, mDefaultCharacterSet); else mDefaultCharacterSet.AssignLiteral("ISO-8859-1"); } aDefaultCharacterSet = mDefaultCharacterSet; return NS_OK; } static void SetChildDefaultCharacterSet(nsIMarkupDocumentViewer* aChild, void* aClosure) { const nsACString* charset = static_cast(aClosure); aChild->SetDefaultCharacterSet(*charset); } NS_IMETHODIMP DocumentViewerImpl::SetDefaultCharacterSet(const nsACString& aDefaultCharacterSet) { mDefaultCharacterSet = aDefaultCharacterSet; // this does a copy of aDefaultCharacterSet // now set the default char set on all children of mContainer CallChildren(SetChildDefaultCharacterSet, (void*) &aDefaultCharacterSet); return NS_OK; } // XXX: SEMANTIC CHANGE! // returns a copy of the string. Caller is responsible for freeing result // using Recycle(aForceCharacterSet) NS_IMETHODIMP DocumentViewerImpl::GetForceCharacterSet(nsACString& aForceCharacterSet) { aForceCharacterSet = mForceCharacterSet; return NS_OK; } static void SetChildForceCharacterSet(nsIMarkupDocumentViewer* aChild, void* aClosure) { const nsACString* charset = static_cast(aClosure); aChild->SetForceCharacterSet(*charset); } NS_IMETHODIMP DocumentViewerImpl::SetForceCharacterSet(const nsACString& aForceCharacterSet) { mForceCharacterSet = aForceCharacterSet; // now set the force char set on all children of mContainer CallChildren(SetChildForceCharacterSet, (void*) &aForceCharacterSet); return NS_OK; } // XXX: SEMANTIC CHANGE! // returns a copy of the string. Caller is responsible for freeing result // using Recycle(aHintCharacterSet) NS_IMETHODIMP DocumentViewerImpl::GetHintCharacterSet(nsACString& aHintCharacterSet) { if(kCharsetUninitialized == mHintCharsetSource) { aHintCharacterSet.Truncate(); } else { aHintCharacterSet = mHintCharset; // this can't possibly be right. we can't set a value just because somebody got a related value! //mHintCharsetSource = kCharsetUninitialized; } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetHintCharacterSetSource(PRInt32 *aHintCharacterSetSource) { NS_ENSURE_ARG_POINTER(aHintCharacterSetSource); *aHintCharacterSetSource = mHintCharsetSource; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetPrevDocCharacterSet(nsACString& aPrevDocCharacterSet) { aPrevDocCharacterSet = mPrevDocCharacterSet; return NS_OK; } static void SetChildPrevDocCharacterSet(nsIMarkupDocumentViewer* aChild, void* aClosure) { const nsACString* charset = static_cast(aClosure); aChild->SetPrevDocCharacterSet(*charset); } NS_IMETHODIMP DocumentViewerImpl::SetPrevDocCharacterSet(const nsACString& aPrevDocCharacterSet) { mPrevDocCharacterSet = aPrevDocCharacterSet; CallChildren(SetChildPrevDocCharacterSet, (void*) &aPrevDocCharacterSet); return NS_OK; } static void SetChildHintCharacterSetSource(nsIMarkupDocumentViewer* aChild, void* aClosure) { aChild->SetHintCharacterSetSource(NS_PTR_TO_INT32(aClosure)); } NS_IMETHODIMP DocumentViewerImpl::SetHintCharacterSetSource(PRInt32 aHintCharacterSetSource) { mHintCharsetSource = aHintCharacterSetSource; // now set the hint char set source on all children of mContainer CallChildren(SetChildHintCharacterSetSource, (void*) aHintCharacterSetSource); return NS_OK; } static void SetChildHintCharacterSet(nsIMarkupDocumentViewer* aChild, void* aClosure) { const nsACString* charset = static_cast(aClosure); aChild->SetHintCharacterSet(*charset); } NS_IMETHODIMP DocumentViewerImpl::SetHintCharacterSet(const nsACString& aHintCharacterSet) { mHintCharset = aHintCharacterSet; // now set the hint char set on all children of mContainer CallChildren(SetChildHintCharacterSet, (void*) &aHintCharacterSet); return NS_OK; } static void SetChildBidiOptions(nsIMarkupDocumentViewer* aChild, void* aClosure) { aChild->SetBidiOptions(NS_PTR_TO_INT32(aClosure)); } NS_IMETHODIMP DocumentViewerImpl::SetBidiTextDirection(PRUint8 aTextDirection) { PRUint32 bidiOptions; GetBidiOptions(&bidiOptions); SET_BIDI_OPTION_DIRECTION(bidiOptions, aTextDirection); SetBidiOptions(bidiOptions); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetBidiTextDirection(PRUint8* aTextDirection) { PRUint32 bidiOptions; if (aTextDirection) { GetBidiOptions(&bidiOptions); *aTextDirection = GET_BIDI_OPTION_DIRECTION(bidiOptions); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetBidiTextType(PRUint8 aTextType) { PRUint32 bidiOptions; GetBidiOptions(&bidiOptions); SET_BIDI_OPTION_TEXTTYPE(bidiOptions, aTextType); SetBidiOptions(bidiOptions); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetBidiTextType(PRUint8* aTextType) { PRUint32 bidiOptions; if (aTextType) { GetBidiOptions(&bidiOptions); *aTextType = GET_BIDI_OPTION_TEXTTYPE(bidiOptions); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetBidiControlsTextMode(PRUint8 aControlsTextMode) { PRUint32 bidiOptions; GetBidiOptions(&bidiOptions); SET_BIDI_OPTION_CONTROLSTEXTMODE(bidiOptions, aControlsTextMode); SetBidiOptions(bidiOptions); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetBidiControlsTextMode(PRUint8* aControlsTextMode) { PRUint32 bidiOptions; if (aControlsTextMode) { GetBidiOptions(&bidiOptions); *aControlsTextMode = GET_BIDI_OPTION_CONTROLSTEXTMODE(bidiOptions); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetBidiNumeral(PRUint8 aNumeral) { PRUint32 bidiOptions; GetBidiOptions(&bidiOptions); SET_BIDI_OPTION_NUMERAL(bidiOptions, aNumeral); SetBidiOptions(bidiOptions); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetBidiNumeral(PRUint8* aNumeral) { PRUint32 bidiOptions; if (aNumeral) { GetBidiOptions(&bidiOptions); *aNumeral = GET_BIDI_OPTION_NUMERAL(bidiOptions); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetBidiSupport(PRUint8 aSupport) { PRUint32 bidiOptions; GetBidiOptions(&bidiOptions); SET_BIDI_OPTION_SUPPORT(bidiOptions, aSupport); SetBidiOptions(bidiOptions); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetBidiSupport(PRUint8* aSupport) { PRUint32 bidiOptions; if (aSupport) { GetBidiOptions(&bidiOptions); *aSupport = GET_BIDI_OPTION_SUPPORT(bidiOptions); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetBidiCharacterSet(PRUint8 aCharacterSet) { PRUint32 bidiOptions; GetBidiOptions(&bidiOptions); SET_BIDI_OPTION_CHARACTERSET(bidiOptions, aCharacterSet); SetBidiOptions(bidiOptions); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetBidiCharacterSet(PRUint8* aCharacterSet) { PRUint32 bidiOptions; if (aCharacterSet) { GetBidiOptions(&bidiOptions); *aCharacterSet = GET_BIDI_OPTION_CHARACTERSET(bidiOptions); } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SetBidiOptions(PRUint32 aBidiOptions) { if (mPresContext) { mPresContext->SetBidi(aBidiOptions, PR_TRUE); // could cause reflow } // now set bidi on all children of mContainer CallChildren(SetChildBidiOptions, (void*) aBidiOptions); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetBidiOptions(PRUint32* aBidiOptions) { if (aBidiOptions) { if (mPresContext) { *aBidiOptions = mPresContext->GetBidi(); } else *aBidiOptions = IBMBIDI_DEFAULT_BIDI_OPTIONS; } return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::SizeToContent() { NS_ENSURE_TRUE(mDocument, NS_ERROR_NOT_AVAILABLE); nsCOMPtr docShellAsItem(do_QueryReferent(mContainer)); NS_ENSURE_TRUE(docShellAsItem, NS_ERROR_FAILURE); nsCOMPtr docShellParent; docShellAsItem->GetSameTypeParent(getter_AddRefs(docShellParent)); // It's only valid to access this from a top frame. Doesn't work from // sub-frames. NS_ENSURE_TRUE(!docShellParent, NS_ERROR_FAILURE); nsCOMPtr presShell; GetPresShell(getter_AddRefs(presShell)); NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE); // Flush out all content and style updates. We can't use a resize reflow // because it won't change some sizes that a style change reflow will. mDocument->FlushPendingNotifications(Flush_Layout); nsIFrame *root = presShell->GetRootFrame(); NS_ENSURE_TRUE(root, NS_ERROR_FAILURE); nscoord prefWidth; { nsCOMPtr rcx; presShell->CreateRenderingContext(root, getter_AddRefs(rcx)); NS_ENSURE_TRUE(rcx, NS_ERROR_FAILURE); prefWidth = root->GetPrefWidth(rcx); } nsresult rv = presShell->ResizeReflow(prefWidth, NS_UNCONSTRAINEDSIZE); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr presContext; GetPresContext(getter_AddRefs(presContext)); NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE); PRInt32 width, height; // so how big is it? nsRect shellArea = presContext->GetVisibleArea(); // Protect against bogus returns here NS_ENSURE_TRUE(shellArea.width != NS_UNCONSTRAINEDSIZE && shellArea.height != NS_UNCONSTRAINEDSIZE, NS_ERROR_FAILURE); width = presContext->AppUnitsToDevPixels(shellArea.width); height = presContext->AppUnitsToDevPixels(shellArea.height); nsCOMPtr treeOwner; docShellAsItem->GetTreeOwner(getter_AddRefs(treeOwner)); NS_ENSURE_TRUE(treeOwner, NS_ERROR_FAILURE); /* presContext's size was calculated in app units and has already been rounded to the equivalent pixels (so the width/height calculation we just performed was probably exact, though it was based on values already rounded during ResizeReflow). In a surprising number of instances, this rounding makes a window which for want of one extra pixel's width ends up wrapping the longest line of text during actual window layout. This makes the window too short, generally clipping the OK/Cancel buttons. Here we add one pixel to the calculated width, to circumvent this problem. */ NS_ENSURE_SUCCESS(treeOwner->SizeShellTo(docShellAsItem, width+1, height), NS_ERROR_FAILURE); return NS_OK; } NS_IMPL_ISUPPORTS1(nsDocViewerSelectionListener, nsISelectionListener) nsresult nsDocViewerSelectionListener::Init(DocumentViewerImpl *aDocViewer) { mDocViewer = aDocViewer; return NS_OK; } /* * GetPopupNode, GetPopupLinkNode and GetPopupImageNode are helpers * for the cmd_copyLink / cmd_copyImageLocation / cmd_copyImageContents family * of commands. The focus controller stores the popup node, these retrieve * them and munge appropriately. Note that we have to store the popup node * rather than retrieving it from EventStateManager::GetFocusedContent because * not all content (images included) can receive focus. */ nsresult DocumentViewerImpl::GetPopupNode(nsIDOMNode** aNode) { NS_ENSURE_ARG_POINTER(aNode); nsresult rv; // get the document nsCOMPtr document; rv = GetDocument(getter_AddRefs(document)); NS_ENSURE_SUCCESS(rv, rv); NS_ENSURE_TRUE(document, NS_ERROR_FAILURE); // get the private dom window nsPIDOMWindow *privateWin = document->GetWindow(); NS_ENSURE_TRUE(privateWin, NS_ERROR_NOT_AVAILABLE); // get the focus controller nsIFocusController *focusController = privateWin->GetRootFocusController(); NS_ENSURE_TRUE(focusController, NS_ERROR_FAILURE); // get the popup node focusController->GetPopupNode(aNode); // addref happens here return rv; } // GetPopupLinkNode: return popup link node or fail nsresult DocumentViewerImpl::GetPopupLinkNode(nsIDOMNode** aNode) { NS_ENSURE_ARG_POINTER(aNode); // you get null unless i say so *aNode = nsnull; // find popup node nsCOMPtr node; nsresult rv = GetPopupNode(getter_AddRefs(node)); NS_ENSURE_SUCCESS(rv, rv); // find out if we have a link in our ancestry while (node) { // are we an anchor? nsCOMPtr anchor(do_QueryInterface(node)); nsCOMPtr area; nsCOMPtr link; nsAutoString xlinkType; if (!anchor) { // area? area = do_QueryInterface(node); if (!area) { // link? link = do_QueryInterface(node); if (!link) { // XLink? nsCOMPtr element(do_QueryInterface(node)); if (element) { element->GetAttributeNS(NS_LITERAL_STRING("http://www.w3.org/1999/xlink"),NS_LITERAL_STRING("type"),xlinkType); } } } } if (anchor || area || link || xlinkType.EqualsLiteral("simple")) { *aNode = node; NS_IF_ADDREF(*aNode); // addref return NS_OK; } else { // if not, get our parent and keep trying... nsCOMPtr parentNode; node->GetParentNode(getter_AddRefs(parentNode)); node = parentNode; } } // if we have no node, fail return NS_ERROR_FAILURE; } // GetPopupLinkNode: return popup image node or fail nsresult DocumentViewerImpl::GetPopupImageNode(nsIImageLoadingContent** aNode) { NS_ENSURE_ARG_POINTER(aNode); // you get null unless i say so *aNode = nsnull; // find popup node nsCOMPtr node; nsresult rv = GetPopupNode(getter_AddRefs(node)); NS_ENSURE_SUCCESS(rv, rv); if (node) CallQueryInterface(node, aNode); return NS_OK; } /* * XXX dr * ------ * These two functions -- GetInLink and GetInImage -- are kind of annoying * in that they only get called from the controller (in * nsDOMWindowController::IsCommandEnabled). The actual construction of the * context menus in communicator (nsContextMenu.js) has its own, redundant * tests. No big deal, but good to keep in mind if we ever clean context * menus. */ NS_IMETHODIMP DocumentViewerImpl::GetInLink(PRBool* aInLink) { #ifdef DEBUG_dr printf("dr :: DocumentViewerImpl::GetInLink\n"); #endif NS_ENSURE_ARG_POINTER(aInLink); // we're not in a link unless i say so *aInLink = PR_FALSE; // get the popup link nsCOMPtr node; nsresult rv = GetPopupLinkNode(getter_AddRefs(node)); if (NS_FAILED(rv)) return rv; NS_ENSURE_TRUE(node, NS_ERROR_FAILURE); // if we made it here, we're in a link *aInLink = PR_TRUE; return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetInImage(PRBool* aInImage) { #ifdef DEBUG_dr printf("dr :: DocumentViewerImpl::GetInImage\n"); #endif NS_ENSURE_ARG_POINTER(aInImage); // we're not in an image unless i say so *aInImage = PR_FALSE; // get the popup image nsCOMPtr node; nsresult rv = GetPopupImageNode(getter_AddRefs(node)); if (NS_FAILED(rv)) return rv; NS_ENSURE_TRUE(node, NS_ERROR_FAILURE); // if we made it here, we're in an image *aInImage = PR_TRUE; return NS_OK; } NS_IMETHODIMP nsDocViewerSelectionListener::NotifySelectionChanged(nsIDOMDocument *, nsISelection *, PRInt16) { NS_ASSERTION(mDocViewer, "Should have doc viewer!"); // get the selection state nsCOMPtr selection; nsresult rv = mDocViewer->GetDocumentSelection(getter_AddRefs(selection)); if (NS_FAILED(rv)) return rv; PRBool selectionCollapsed; selection->GetIsCollapsed(&selectionCollapsed); // we only call UpdateCommands when the selection changes from collapsed // to non-collapsed or vice versa. We might need another update string // for simple selection changes, but that would be expenseive. if (!mGotSelectionState || mSelectionWasCollapsed != selectionCollapsed) { nsCOMPtr theDoc; mDocViewer->GetDocument(getter_AddRefs(theDoc)); if (!theDoc) return NS_ERROR_FAILURE; nsPIDOMWindow *domWindow = theDoc->GetWindow(); if (!domWindow) return NS_ERROR_FAILURE; domWindow->UpdateCommands(NS_LITERAL_STRING("select")); mGotSelectionState = PR_TRUE; mSelectionWasCollapsed = selectionCollapsed; } return NS_OK; } //nsDocViewerFocusListener NS_IMPL_ISUPPORTS2(nsDocViewerFocusListener, nsIDOMFocusListener, nsIDOMEventListener) nsDocViewerFocusListener::nsDocViewerFocusListener() :mDocViewer(nsnull) { } nsDocViewerFocusListener::~nsDocViewerFocusListener(){} nsresult nsDocViewerFocusListener::HandleEvent(nsIDOMEvent* aEvent) { return NS_OK; } NS_IMETHODIMP nsDocViewerFocusListener::Focus(nsIDOMEvent* aEvent) { nsCOMPtr shell; if(!mDocViewer) return NS_ERROR_FAILURE; nsresult result = mDocViewer->GetPresShell(getter_AddRefs(shell)); if(NS_FAILED(result) || !shell) return result?result:NS_ERROR_FAILURE; nsCOMPtr selCon; selCon = do_QueryInterface(shell); PRInt16 selectionStatus; selCon->GetDisplaySelection(&selectionStatus); // If selection was disabled, re-enable it. if(selectionStatus == nsISelectionController::SELECTION_DISABLED || selectionStatus == nsISelectionController::SELECTION_HIDDEN) { selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON); selCon->RepaintSelection(nsISelectionController::SELECTION_NORMAL); } return result; } NS_IMETHODIMP nsDocViewerFocusListener::Blur(nsIDOMEvent* aEvent) { nsCOMPtr shell; if(!mDocViewer) return NS_ERROR_FAILURE; nsresult result = mDocViewer->GetPresShell(getter_AddRefs(shell)); if(NS_FAILED(result) || !shell) return result?result:NS_ERROR_FAILURE; nsCOMPtr selCon; selCon = do_QueryInterface(shell); PRInt16 selectionStatus; selCon->GetDisplaySelection(&selectionStatus); // If selection was on, disable it. if(selectionStatus == nsISelectionController::SELECTION_ON || selectionStatus == nsISelectionController::SELECTION_ATTENTION) { selCon->SetDisplaySelection(nsISelectionController::SELECTION_DISABLED); selCon->RepaintSelection(nsISelectionController::SELECTION_NORMAL); } return result; } nsresult nsDocViewerFocusListener::Init(DocumentViewerImpl *aDocViewer) { mDocViewer = aDocViewer; return NS_OK; } /** --------------------------------------------------- * From nsIWebBrowserPrint */ #ifdef NS_PRINTING NS_IMETHODIMP DocumentViewerImpl::Print(nsIPrintSettings* aPrintSettings, nsIWebProgressListener* aWebProgressListener) { #ifdef MOZ_XUL // Temporary code for Bug 136185 / Bug 240490 nsCOMPtr xulDoc(do_QueryInterface(mDocument)); if (xulDoc) { nsPrintEngine::ShowPrintErrorDialog(NS_ERROR_GFX_PRINTER_NO_XUL); return NS_ERROR_FAILURE; } #endif if (!mContainer) { PR_PL(("Container was destroyed yet we are still trying to use it!")); return NS_ERROR_FAILURE; } nsCOMPtr docShell(do_QueryReferent(mContainer)); NS_ASSERTION(docShell, "This has to be a docshell"); // Check to see if this document is still busy // If it is busy and we aren't already "queued" up to print then // Indicate there is a print pending and cache the args for later PRUint32 busyFlags = nsIDocShell::BUSY_FLAGS_NONE; if ((NS_FAILED(docShell->GetBusyFlags(&busyFlags)) || (busyFlags != nsIDocShell::BUSY_FLAGS_NONE && busyFlags & nsIDocShell::BUSY_FLAGS_PAGE_LOADING)) && !mPrintDocIsFullyLoaded) { if (!mPrintIsPending) { mCachedPrintSettings = aPrintSettings; mCachedPrintWebProgressListner = aWebProgressListener; mPrintIsPending = PR_TRUE; } PR_PL(("Printing Stopped - document is still busy!")); return NS_ERROR_GFX_PRINTER_DOC_IS_BUSY; } nsCOMPtr presShell; docShell->GetPresShell(getter_AddRefs(presShell)); if (!presShell || !mDocument || !mDeviceContext || !mParentWidget) { PR_PL(("Can't Print without pres shell, document etc")); return NS_ERROR_FAILURE; } nsresult rv; // if we are printing another URL, then exit // the reason we check here is because this method can be called while // another is still in here (the printing dialog is a good example). // the only time we can print more than one job at a time is the regression tests if (GetIsPrinting()) { // Let the user know we are not ready to print. rv = NS_ERROR_NOT_AVAILABLE; nsPrintEngine::ShowPrintErrorDialog(rv); return rv; } // If we are hosting a full-page plugin, tell it to print // first. It shows its own native print UI. nsCOMPtr pDoc(do_QueryInterface(mDocument)); if (pDoc) return pDoc->Print(); if (!mPrintEngine) { mPrintEngine = new nsPrintEngine(); NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_OUT_OF_MEMORY); rv = mPrintEngine->Initialize(this, docShell, mDocument, mDeviceContext, mParentWidget, #ifdef NS_DEBUG mDebugFile #else nsnull #endif ); if (NS_FAILED(rv)) { mPrintEngine->Destroy(); mPrintEngine = nsnull; return rv; } } rv = mPrintEngine->Print(aPrintSettings, aWebProgressListener); if (NS_FAILED(rv)) { OnDonePrinting(); } return rv; } NS_IMETHODIMP DocumentViewerImpl::PrintPreview(nsIPrintSettings* aPrintSettings, nsIDOMWindow *aChildDOMWin, nsIWebProgressListener* aWebProgressListener) { #if defined(NS_PRINTING) && defined(NS_PRINT_PREVIEW) nsresult rv = NS_OK; if (GetIsPrinting()) { nsPrintEngine::CloseProgressDialog(aWebProgressListener); return NS_ERROR_FAILURE; } #ifdef MOZ_XUL // Temporary code for Bug 136185 / Bug 240490 nsCOMPtr xulDoc(do_QueryInterface(mDocument)); if (xulDoc) { nsPrintEngine::CloseProgressDialog(aWebProgressListener); nsPrintEngine::ShowPrintErrorDialog(NS_ERROR_GFX_PRINTER_NO_XUL, PR_FALSE); return NS_ERROR_FAILURE; } #endif if (!mContainer) { PR_PL(("Container was destroyed yet we are still trying to use it!")); return NS_ERROR_FAILURE; } nsCOMPtr docShell(do_QueryReferent(mContainer)); NS_ASSERTION(docShell, "This has to be a docshell"); nsCOMPtr presShell; docShell->GetPresShell(getter_AddRefs(presShell)); if (!presShell || !mDocument || !mDeviceContext || !mParentWidget) { PR_PL(("Can't Print Preview without pres shell, document etc")); return NS_ERROR_FAILURE; } if (!mPrintEngine) { mPrintEngine = new nsPrintEngine(); NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_OUT_OF_MEMORY); rv = mPrintEngine->Initialize(this, docShell, mDocument, mDeviceContext, mParentWidget, #ifdef NS_DEBUG mDebugFile #else nsnull #endif ); if (NS_FAILED(rv)) { mPrintEngine->Destroy(); mPrintEngine = nsnull; return rv; } } rv = mPrintEngine->PrintPreview(aPrintSettings, aChildDOMWin, aWebProgressListener); if (NS_FAILED(rv)) { OnDonePrinting(); } return rv; #else return NS_ERROR_FAILURE; #endif } //---------------------------------------------------------------------- NS_IMETHODIMP DocumentViewerImpl::PrintPreviewNavigate(PRInt16 aType, PRInt32 aPageNum) { if (!GetIsPrintPreview() || mPrintEngine->GetIsCreatingPrintPreview()) return NS_ERROR_FAILURE; nsIScrollableView* scrollableView = nsnull; mPrintEngine->GetPrintPreviewViewManager()->GetRootScrollableView(&scrollableView); if (scrollableView == nsnull) return NS_OK; // Check to see if we can short circut scrolling to the top if (aType == nsIWebBrowserPrint::PRINTPREVIEW_HOME || (aType == nsIWebBrowserPrint::PRINTPREVIEW_GOTO_PAGENUM && aPageNum == 1)) { scrollableView->ScrollTo(0, 0, PR_TRUE); return NS_OK; } // Finds the SimplePageSequencer frame // in PP mPrtPreview->mPrintObject->mSeqFrame is null nsIFrame* seqFrame = nsnull; PRInt32 pageCount = 0; if (NS_FAILED(mPrintEngine->GetSeqFrameAndCountPages(seqFrame, pageCount))) { return NS_ERROR_FAILURE; } // Figure where we are currently scrolled to nscoord x; nscoord y; scrollableView->GetScrollPosition(x, y); PRInt32 pageNum = 1; nsIFrame * fndPageFrame = nsnull; nsIFrame * currentPage = nsnull; // If it is "End" then just do a "goto" to the last page if (aType == nsIWebBrowserPrint::PRINTPREVIEW_END) { aType = nsIWebBrowserPrint::PRINTPREVIEW_GOTO_PAGENUM; aPageNum = pageCount; } // Now, locate the current page we are on and // and the page of the page number nscoord gap = 0; nsIFrame* pageFrame = seqFrame->GetFirstChild(nsnull); while (pageFrame != nsnull) { nsRect pageRect = pageFrame->GetRect(); if (pageNum == 1) { gap = pageRect.y; } if (pageRect.Contains(pageRect.x, y)) { currentPage = pageFrame; } if (pageNum == aPageNum) { fndPageFrame = pageFrame; break; } pageNum++; pageFrame = pageFrame->GetNextSibling(); } if (aType == nsIWebBrowserPrint::PRINTPREVIEW_PREV_PAGE) { if (currentPage) { fndPageFrame = currentPage->GetPrevInFlow(); if (!fndPageFrame) { return NS_OK; } } else { return NS_OK; } } else if (aType == nsIWebBrowserPrint::PRINTPREVIEW_NEXT_PAGE) { if (currentPage) { fndPageFrame = currentPage->GetNextInFlow(); if (!fndPageFrame) { return NS_OK; } } else { return NS_OK; } } else { // If we get here we are doing "GoTo" if (aPageNum < 0 || aPageNum > pageCount) { return NS_OK; } } if (fndPageFrame && scrollableView) { nscoord deadSpaceGapTwips = 0; nsIPageSequenceFrame * sqf; if (NS_SUCCEEDED(CallQueryInterface(seqFrame, &sqf))) { sqf->GetDeadSpaceValue(&deadSpaceGapTwips); } // To compute deadSpaceGap, use the same presContext as was used // to layout the seqFrame. (That presContext may have different // TwipsToAppUnits conversion from this->mPresContext) nscoord deadSpaceGap = seqFrame->PresContext()->TwipsToAppUnits(deadSpaceGapTwips); nscoord newYPosn = nscoord(mPrintEngine->GetPrintPreviewScale() * float(fndPageFrame->GetPosition().y - deadSpaceGap)); scrollableView->ScrollTo(0, newYPosn, PR_TRUE); } return NS_OK; } /* readonly attribute nsIPrintSettings globalPrintSettings; */ NS_IMETHODIMP DocumentViewerImpl::GetGlobalPrintSettings(nsIPrintSettings * *aGlobalPrintSettings) { return nsPrintEngine::GetGlobalPrintSettings(aGlobalPrintSettings); } /* readonly attribute boolean doingPrint; */ // XXX This always returns PR_FALSE for subdocuments NS_IMETHODIMP DocumentViewerImpl::GetDoingPrint(PRBool *aDoingPrint) { NS_ENSURE_ARG_POINTER(aDoingPrint); *aDoingPrint = PR_FALSE; if (mPrintEngine) { // XXX shouldn't this be GetDoingPrint() ? return mPrintEngine->GetDoingPrintPreview(aDoingPrint); } return NS_OK; } /* readonly attribute boolean doingPrintPreview; */ // XXX This always returns PR_FALSE for subdocuments NS_IMETHODIMP DocumentViewerImpl::GetDoingPrintPreview(PRBool *aDoingPrintPreview) { NS_ENSURE_ARG_POINTER(aDoingPrintPreview); *aDoingPrintPreview = PR_FALSE; if (mPrintEngine) { return mPrintEngine->GetDoingPrintPreview(aDoingPrintPreview); } return NS_OK; } /* readonly attribute nsIPrintSettings currentPrintSettings; */ NS_IMETHODIMP DocumentViewerImpl::GetCurrentPrintSettings(nsIPrintSettings * *aCurrentPrintSettings) { NS_ENSURE_ARG_POINTER(aCurrentPrintSettings); *aCurrentPrintSettings = nsnull; NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_FAILURE); return mPrintEngine->GetCurrentPrintSettings(aCurrentPrintSettings); } /* readonly attribute nsIDOMWindow currentChildDOMWindow; */ NS_IMETHODIMP DocumentViewerImpl::GetCurrentChildDOMWindow(nsIDOMWindow * *aCurrentChildDOMWindow) { NS_ENSURE_ARG_POINTER(aCurrentChildDOMWindow); *aCurrentChildDOMWindow = nsnull; return NS_ERROR_NOT_IMPLEMENTED; } /* void cancel (); */ NS_IMETHODIMP DocumentViewerImpl::Cancel() { NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_FAILURE); return mPrintEngine->Cancelled(); } /* void exitPrintPreview (); */ NS_IMETHODIMP DocumentViewerImpl::ExitPrintPreview() { if (GetIsPrinting()) return NS_ERROR_FAILURE; NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_FAILURE); if (GetIsPrintPreview()) { ReturnToGalleyPresentation(); } return NS_OK; } //---------------------------------------------------------------------------------- // Enumerate all the documents for their titles NS_IMETHODIMP DocumentViewerImpl::EnumerateDocumentNames(PRUint32* aCount, PRUnichar*** aResult) { #ifdef NS_PRINTING NS_ENSURE_ARG(aCount); NS_ENSURE_ARG_POINTER(aResult); NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_FAILURE); return mPrintEngine->EnumerateDocumentNames(aCount, aResult); #else return NS_ERROR_FAILURE; #endif } /* readonly attribute boolean isFramesetFrameSelected; */ NS_IMETHODIMP DocumentViewerImpl::GetIsFramesetFrameSelected(PRBool *aIsFramesetFrameSelected) { #ifdef NS_PRINTING *aIsFramesetFrameSelected = PR_FALSE; NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_FAILURE); return mPrintEngine->GetIsFramesetFrameSelected(aIsFramesetFrameSelected); #else return NS_ERROR_FAILURE; #endif } /* readonly attribute long printPreviewNumPages; */ NS_IMETHODIMP DocumentViewerImpl::GetPrintPreviewNumPages(PRInt32 *aPrintPreviewNumPages) { #ifdef NS_PRINTING NS_ENSURE_ARG_POINTER(aPrintPreviewNumPages); NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_FAILURE); return mPrintEngine->GetPrintPreviewNumPages(aPrintPreviewNumPages); #else return NS_ERROR_FAILURE; #endif } /* readonly attribute boolean isFramesetDocument; */ NS_IMETHODIMP DocumentViewerImpl::GetIsFramesetDocument(PRBool *aIsFramesetDocument) { #ifdef NS_PRINTING *aIsFramesetDocument = PR_FALSE; NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_FAILURE); return mPrintEngine->GetIsFramesetDocument(aIsFramesetDocument); #else return NS_ERROR_FAILURE; #endif } /* readonly attribute boolean isIFrameSelected; */ NS_IMETHODIMP DocumentViewerImpl::GetIsIFrameSelected(PRBool *aIsIFrameSelected) { #ifdef NS_PRINTING *aIsIFrameSelected = PR_FALSE; NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_FAILURE); return mPrintEngine->GetIsIFrameSelected(aIsIFrameSelected); #else return NS_ERROR_FAILURE; #endif } /* readonly attribute boolean isRangeSelection; */ NS_IMETHODIMP DocumentViewerImpl::GetIsRangeSelection(PRBool *aIsRangeSelection) { #ifdef NS_PRINTING *aIsRangeSelection = PR_FALSE; NS_ENSURE_TRUE(mPrintEngine, NS_ERROR_FAILURE); return mPrintEngine->GetIsRangeSelection(aIsRangeSelection); #else return NS_ERROR_FAILURE; #endif } //---------------------------------------------------------------------------------- // Printing/Print Preview Helpers //---------------------------------------------------------------------------------- //---------------------------------------------------------------------------------- // Walks the document tree and tells each DocShell whether Printing/PP is happening void DocumentViewerImpl::SetIsPrintingInDocShellTree(nsIDocShellTreeNode* aParentNode, PRBool aIsPrintingOrPP, PRBool aStartAtTop) { NS_ASSERTION(aParentNode, "Parent can't be NULL!"); nsCOMPtr parentItem(do_QueryInterface(aParentNode)); // find top of "same parent" tree if (aStartAtTop) { while (parentItem) { nsCOMPtr parent; parentItem->GetSameTypeParent(getter_AddRefs(parent)); if (!parent) { break; } parentItem = do_QueryInterface(parent); } } NS_ASSERTION(parentItem, "parentItem can't be null"); // Check to see if the DocShell's ContentViewer is printing/PP nsCOMPtr viewerContainer(do_QueryInterface(parentItem)); if (viewerContainer) { viewerContainer->SetIsPrinting(aIsPrintingOrPP); } // Traverse children to see if any of them are printing. PRInt32 n; aParentNode->GetChildCount(&n); for (PRInt32 i=0; i < n; i++) { nsCOMPtr child; aParentNode->GetChildAt(i, getter_AddRefs(child)); nsCOMPtr childAsNode(do_QueryInterface(child)); NS_ASSERTION(childAsNode, "child isn't nsIDocShellTreeNode"); if (childAsNode) { SetIsPrintingInDocShellTree(childAsNode, aIsPrintingOrPP, PR_FALSE); } } } #endif // NS_PRINTING //------------------------------------------------------------ // XXX this always returns PR_FALSE for subdocuments PRBool DocumentViewerImpl::GetIsPrinting() { #ifdef NS_PRINTING if (mPrintEngine) { return mPrintEngine->GetIsPrinting(); } #endif return PR_FALSE; } //------------------------------------------------------------ // Notification from the PrintEngine of the current Printing status void DocumentViewerImpl::SetIsPrinting(PRBool aIsPrinting) { #ifdef NS_PRINTING // Set all the docShells in the docshell tree to be printing. // that way if anyone of them tries to "navigate" it can't if (mContainer) { nsCOMPtr docShellTreeNode(do_QueryReferent(mContainer)); NS_ASSERTION(docShellTreeNode, "mContainer has to be a nsIDocShellTreeNode"); SetIsPrintingInDocShellTree(docShellTreeNode, aIsPrinting, PR_TRUE); } #endif } //------------------------------------------------------------ // The PrintEngine holds the current value // this called from inside the DocViewer. // XXX it always returns PR_FALSE for subdocuments PRBool DocumentViewerImpl::GetIsPrintPreview() { #ifdef NS_PRINTING if (mPrintEngine) { return mPrintEngine->GetIsPrintPreview(); } #endif return PR_FALSE; } //------------------------------------------------------------ // Notification from the PrintEngine of the current PP status void DocumentViewerImpl::SetIsPrintPreview(PRBool aIsPrintPreview) { #ifdef NS_PRINTING // Set all the docShells in the docshell tree to be printing. // that way if anyone of them tries to "navigate" it can't if (mContainer) { nsCOMPtr docShellTreeNode(do_QueryReferent(mContainer)); NS_ASSERTION(docShellTreeNode, "mContainer has to be a nsIDocShellTreeNode"); SetIsPrintingInDocShellTree(docShellTreeNode, aIsPrintPreview, PR_TRUE); } #endif } //---------------------------------------------------------------------------------- // nsIDocumentViewerPrint IFace //---------------------------------------------------------------------------------- //------------------------------------------------------------ void DocumentViewerImpl::IncrementDestroyRefCount() { ++mDestroyRefCount; } //------------------------------------------------------------ static void ResetFocusState(nsIDocShell* aDocShell); void DocumentViewerImpl::ReturnToGalleyPresentation() { #if defined(NS_PRINTING) && defined(NS_PRINT_PREVIEW) if (!GetIsPrintPreview()) { NS_ERROR("Wow, we should never get here!"); return; } SetIsPrintPreview(PR_FALSE); mPrintEngine->TurnScriptingOn(PR_TRUE); mPrintEngine->Destroy(); mPrintEngine = nsnull; mViewManager->EnableRefresh(NS_VMREFRESH_DEFERRED); nsCOMPtr docShell(do_QueryReferent(mContainer)); ResetFocusState(docShell); if (mPresContext) mPresContext->RestoreImageAnimationMode(); SetTextZoom(mTextZoom); SetFullZoom(mPageZoom); Show(); #endif // NS_PRINTING && NS_PRINT_PREVIEW } //------------------------------------------------------------ // Reset ESM focus for all descendent doc shells. static void ResetFocusState(nsIDocShell* aDocShell) { nsCOMPtr docShellEnumerator; aDocShell->GetDocShellEnumerator(nsIDocShellTreeItem::typeContent, nsIDocShell::ENUMERATE_FORWARDS, getter_AddRefs(docShellEnumerator)); nsCOMPtr currentDocShell; nsCOMPtr currentContainer; PRBool hasMoreDocShells; while (NS_SUCCEEDED(docShellEnumerator->HasMoreElements(&hasMoreDocShells)) && hasMoreDocShells) { docShellEnumerator->GetNext(getter_AddRefs(currentContainer)); currentDocShell = do_QueryInterface(currentContainer); if (!currentDocShell) { break; } nsCOMPtr presContext; currentDocShell->GetPresContext(getter_AddRefs(presContext)); nsIEventStateManager* esm = presContext ? presContext->EventStateManager() : nsnull; if (esm) { esm->SetContentState(nsnull, NS_EVENT_STATE_FOCUS); esm->SetFocusedContent(nsnull); } } } //------------------------------------------------------------ // This called ONLY when printing has completed and the DV // is being notified that it should get rid of the PrintEngine. // // BUT, if we are in Print Preview then we want to ignore the // notification (we do not get rid of the PrintEngine) // // One small caveat: // This IS called from two places in this module for cleaning // up when an error occurred during the start up printing // and print preview // void DocumentViewerImpl::OnDonePrinting() { #if defined(NS_PRINTING) && defined(NS_PRINT_PREVIEW) if (mPrintEngine) { if (GetIsPrintPreview()) { mPrintEngine->DestroyPrintingData(); } else { mPrintEngine->Destroy(); mPrintEngine = nsnull; } // We are done printing, now cleanup if (mDeferredWindowClose) { mDeferredWindowClose = PR_FALSE; nsCOMPtr container = do_QueryReferent(mContainer); nsCOMPtr win = do_GetInterface(container); if (win) win->Close(); } else if (mClosingWhilePrinting) { if (mDocument) { mDocument->SetScriptGlobalObject(nsnull); mDocument->Destroy(); mDocument = nsnull; } mClosingWhilePrinting = PR_FALSE; NS_RELEASE_THIS(); } if (mPresContext) mPresContext->RestoreImageAnimationMode(); } #endif // NS_PRINTING && NS_PRINT_PREVIEW } NS_IMETHODIMP DocumentViewerImpl::SetPageMode(PRBool aPageMode, nsIPrintSettings* aPrintSettings) { // XXX Page mode is only partially working; it's currently used for // reftests that require a paginated context mIsPageMode = aPageMode; // Get the current size of what is being viewed nsRect bounds; mWindow->GetBounds(bounds); if (mPresShell) { // Break circular reference (or something) mPresShell->EndObservingDocument(); nsCOMPtr selection; nsresult rv = GetDocumentSelection(getter_AddRefs(selection)); nsCOMPtr selPrivate(do_QueryInterface(selection)); if (NS_SUCCEEDED(rv) && selPrivate && mSelectionListener) selPrivate->RemoveSelectionListener(mSelectionListener); mPresShell->Destroy(); } if (mPresContext) { mPresContext->SetContainer(nsnull); mPresContext->SetLinkHandler(nsnull); } mPresShell = nsnull; mPresContext = nsnull; mViewManager = nsnull; mWindow = nsnull; NS_ENSURE_STATE(mDocument); if (aPageMode) { mPresContext = new nsPresContext(mDocument, nsPresContext::eContext_PageLayout); NS_ENSURE_TRUE(mPresContext, NS_ERROR_OUT_OF_MEMORY); mPresContext->SetPaginatedScrolling(PR_TRUE); mPresContext->SetPrintSettings(aPrintSettings); nsresult rv = mPresContext->Init(mDeviceContext); NS_ENSURE_SUCCESS(rv, rv); } InitInternal(mParentWidget, nsnull, mDeviceContext, bounds, PR_TRUE, PR_FALSE, PR_FALSE); mViewManager->EnableRefresh(NS_VMREFRESH_NO_SYNC); Show(); return NS_OK; } NS_IMETHODIMP DocumentViewerImpl::GetHistoryEntry(nsISHEntry **aHistoryEntry) { NS_IF_ADDREF(*aHistoryEntry = mSHEntry); return NS_OK; }