khtml Library API Documentation

khtml_part.h

00001 // -*- c-basic-offset: 2 -*-
00002 /* This file is part of the KDE project
00003  *
00004  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
00005  *                     1999-2001 Lars Knoll <knoll@kde.org>
00006  *                     1999-2001 Antti Koivisto <koivisto@kde.org>
00007  *                     2000-2001 Simon Hausmann <hausmann@kde.org>
00008  *                     2000-2001 Dirk Mueller <mueller@kde.org>
00009  *                     2000 Stefan Schimanski <1Stein@gmx.de>
00010  *
00011  * This library is free software; you can redistribute it and/or
00012  * modify it under the terms of the GNU Library General Public
00013  * License as published by the Free Software Foundation; either
00014  * version 2 of the License, or (at your option) any later version.
00015  *
00016  * This library is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00019  * Library General Public License for more details.
00020  *
00021  * You should have received a copy of the GNU Library General Public License
00022  * along with this library; see the file COPYING.LIB.  If not, write to
00023  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00024  * Boston, MA 02111-1307, USA.
00025  */
00026 #ifndef __khtml_part_h__
00027 #define __khtml_part_h__
00028 
00029 #include "dom/html_document.h"
00030 #include "dom/dom2_range.h"
00031 
00032 #include <kparts/part.h>
00033 #include <kparts/browserextension.h>
00034 #include <kdemacros.h>
00035 #include <kfinddialog.h>
00036 
00037 #include <qregexp.h>
00038 
00039 class KHTMLPartPrivate;
00040 class KHTMLPartBrowserExtension;
00041 class KJSProxy;
00042 class KHTMLView;
00043 class KHTMLSettings;
00044 class KJavaAppletContext;
00045 class KJSErrorDlg;
00046 
00047 namespace DOM
00048 {
00049   class HTMLDocument;
00050   class HTMLDocumentImpl;
00051   class DocumentImpl;
00052   class HTMLTitleElementImpl;
00053   class HTMLElementImpl;
00054   class HTMLFrameElementImpl;
00055   class HTMLIFrameElementImpl;
00056   class HTMLObjectElementImpl;
00057   class HTMLFormElementImpl;
00058   class HTMLAnchorElementImpl;
00059   class HTMLMetaElementImpl;
00060   class NodeImpl;
00061   class Node;
00062   class HTMLEventListener;
00063   class EventListener;
00064 }
00065 
00066 namespace KJS
00067 {
00068   class Interpreter;
00069 }
00070 
00071 namespace khtml
00072 {
00073   class DocLoader;
00074   class RenderPart;
00075   class RenderPartObject;
00076   struct ChildFrame;
00077   class MouseEvent;
00078   class MousePressEvent;
00079   class MouseDoubleClickEvent;
00080   class MouseMoveEvent;
00081   class MouseReleaseEvent;
00082   class DrawContentsEvent;
00083   class CachedObject;
00084   class RenderWidget;
00085   class CSSStyleSelector;
00086   class HTMLTokenizer;
00087   class Decoder;
00088   class XMLTokenizer;
00089 }
00090 
00091 namespace KJS {
00092     class Window;
00093     class WindowFunc;
00094     class ExternalFunc;
00095     class JSEventListener;
00096     class JSLazyEventListener;
00097     class JSNodeFilter;
00098     class DOMDocument;
00099     class SourceFile;
00100     class ScheduledAction;
00101 }
00102 
00103 namespace KParts
00104 {
00105   class PartManager;
00106   class LiveConnectExtension;
00107 }
00108 
00109 namespace KWallet
00110 {
00111   class Wallet;
00112 }
00113 
00185 class KHTMLPart : public KParts::ReadOnlyPart
00186 {
00187   Q_OBJECT
00188   friend class KHTMLView;
00189   friend class DOM::HTMLTitleElementImpl;
00190   friend class DOM::HTMLFrameElementImpl;
00191   friend class DOM::HTMLIFrameElementImpl;
00192   friend class DOM::HTMLObjectElementImpl;
00193   friend class DOM::HTMLAnchorElementImpl;
00194   friend class DOM::HTMLMetaElementImpl;
00195   friend class DOM::NodeImpl;
00196   friend class KHTMLRun;
00197   friend class DOM::HTMLFormElementImpl;
00198   friend class khtml::RenderPartObject;
00199   friend class KJS::Window;
00200   friend class KJS::ScheduledAction;
00201   friend class KJS::JSNodeFilter;
00202   friend class KJS::WindowFunc;
00203   friend class KJS::ExternalFunc;
00204   friend class KJS::JSEventListener;
00205   friend class KJS::JSLazyEventListener;
00206   friend class KJS::DOMDocument;
00207   friend class KJS::SourceFile;
00208   friend class KJSProxy;
00209   friend class KHTMLPartBrowserExtension;
00210   friend class DOM::DocumentImpl;
00211   friend class DOM::HTMLDocumentImpl;
00212   friend class KHTMLPartBrowserHostExtension;
00213   friend class khtml::HTMLTokenizer;
00214   friend class khtml::XMLTokenizer;
00215   friend class khtml::RenderWidget;
00216   friend class khtml::CSSStyleSelector;
00217   friend class KHTMLPartIface;
00218   friend class KHTMLPartFunction;
00219 
00220   Q_PROPERTY( bool javaScriptEnabled READ jScriptEnabled WRITE setJScriptEnabled )
00221   Q_PROPERTY( bool javaEnabled READ javaEnabled WRITE setJavaEnabled )
00222   Q_PROPERTY( bool autoloadImages READ autoloadImages WRITE setAutoloadImages )
00223   Q_PROPERTY( bool dndEnabled READ dndEnabled WRITE setDNDEnabled )
00224   Q_PROPERTY( bool pluginsEnabled READ pluginsEnabled WRITE setPluginsEnabled )
00225   Q_PROPERTY( bool onlyLocalReferences READ onlyLocalReferences WRITE setOnlyLocalReferences )
00226   Q_PROPERTY( QCString dcopObjectId READ dcopObjectId )
00227   Q_PROPERTY( bool modified READ isModified )
00228   
00229 public:
00230   enum GUIProfile { DefaultGUI, BrowserViewGUI /* ... */ };
00231 
00244   KHTMLPart( QWidget *parentWidget = 0, const char *widgetname = 0,
00245              QObject *parent = 0, const char *name = 0, GUIProfile prof = DefaultGUI );
00246 
00247   KHTMLPart( KHTMLView *view, QObject *parent = 0, const char *name = 0, GUIProfile prof = DefaultGUI );
00248 
00252   virtual ~KHTMLPart();
00253 
00259   virtual bool openURL( const KURL &url );
00260 
00264   virtual bool closeURL();
00265 
00272   virtual void showError( KIO::Job* job );
00273 
00277   DOM::HTMLDocument htmlDocument() const;
00278 
00282   DOM::Document document() const;
00283 
00287   DOM::Node activeNode() const;
00288 
00292   KParts::BrowserExtension *browserExtension() const;
00293   KParts::LiveConnectExtension *liveConnectExtension( const khtml::RenderPart *) const;
00294   KParts::BrowserHostExtension *browserHostExtension() const;
00295 
00299   KHTMLView *view() const;
00300 
00307   void setJScriptEnabled( bool enable );
00308 
00313   bool jScriptEnabled() const;
00314 
00332   KJS::Interpreter *jScriptInterpreter();
00333 
00337   void setStatusMessagesEnabled( bool enable );
00338 
00342   bool statusMessagesEnabled() const;
00343 
00347   void setMetaRefreshEnabled( bool enable );
00348 
00352   bool metaRefreshEnabled() const;
00353 
00358   QVariant executeScript( const DOM::Node &n, const QString &script );
00359 
00364   void setDNDEnabled( bool b );
00365 
00369   bool dndEnabled() const;
00370 
00377   void setJavaEnabled( bool enable );
00378 
00382   bool javaEnabled() const;
00383 
00387   KJavaAppletContext *javaContext();
00388 
00393   KJavaAppletContext *createJavaContext();
00394 
00398   void setPluginsEnabled( bool enable );
00399 
00403   bool pluginsEnabled() const;
00404 
00411   void setAutoloadImages( bool enable );
00418   bool autoloadImages() const;
00419 
00436   void setOnlyLocalReferences( bool enable );
00437 
00442   bool onlyLocalReferences() const;
00443 
00447   bool isCaretMode() const;
00448 
00453   bool isEditable() const;
00454 
00468   void setCaretPosition(DOM::Node node, long offset, bool extendSelection = false);
00469 
00477   enum CaretDisplayPolicy {
00478     CaretVisible, CaretInvisible, CaretBlink
00479   };
00480 
00485   CaretDisplayPolicy caretDisplayPolicyNonFocused() const;
00486 
00497   void setCaretDisplayPolicyNonFocused(CaretDisplayPolicy policy);
00498 
00499 #ifndef KDE_NO_COMPAT
00500   void enableJScript( bool e ) { setJScriptEnabled(e); }
00501   void enableJava( bool e ) { setJavaEnabled(e); }
00502   void enablePlugins( bool e ) { setPluginsEnabled(e); }
00503   void autoloadImages( bool e ) { setAutoloadImages(e); }
00504   void enableMetaRefresh( bool e ) { setMetaRefreshEnabled(e); }
00505   bool setCharset( const QString &, bool ) { return true; }
00506 
00507   KURL baseURL() const;
00508   QString baseTarget() const;
00509 #endif
00510 
00514   KURL backgroundURL() const;
00515 
00519   void scheduleRedirection( int delay, const QString &url, bool lockHistory = true );
00520 
00543   virtual void begin( const KURL &url = KURL(), int xOffset = 0, int yOffset = 0 );
00544 
00565   virtual void write( const char *str, int len = -1 );
00566 
00574   virtual void write( const QString &str );
00575 
00579   virtual void end();
00580 
00581   /*
00582    * Prints the current HTML page laid out for the printer.
00583    *
00584    * (not implemented at the moment)
00585    */
00586   //    void print(QPainter *, int pageHeight, int pageWidth);
00587 
00591   void paint( QPainter *, const QRect &, int = 0, bool * = 0 );
00592 
00599   bool setEncoding( const QString &name, bool override = false );
00600 
00606   QString encoding() const;
00607 
00615   void setUserStyleSheet( const KURL &url );
00616 
00624   void setUserStyleSheet( const QString &styleSheet );
00625 
00626 public:
00627 
00633   void setStandardFont( const QString &name );
00634 
00641   void setFixedFont( const QString &name );
00642 
00650   bool gotoAnchor( const QString &name );
00651 
00658   bool nextAnchor();
00659 
00664   bool prevAnchor();
00665 
00669   void setURLCursor( const QCursor &c );
00670 
00674   QCursor urlCursor() const;
00675 
00680   enum FindOptions
00681   {
00682     FindLinksOnly   = 1 * KFindDialog::MinimumUserOption,
00683     FindNoPopups    = 2 * KFindDialog::MinimumUserOption
00684     //FindIncremental = 4 * KFindDialog::MinimumUserOption
00685   };
00686 
00692   void findText();
00693 
00702   void findText( const QString &str, long options, QWidget *parent = 0,
00703                  KFindDialog *findDialog = 0 );
00704 
00708   void findTextBegin();
00709 
00715   bool findTextNext( const QString &str, bool forward, bool caseSensitive, bool isRegExp );
00716 
00722   bool findTextNext();
00723 
00734   void setZoomFactor(int percent);
00735 
00739   int zoomFactor() const;
00740 
00744   virtual QString selectedText() const;
00745 
00749   DOM::Range selection() const;
00750 
00762   void selection(DOM::Node &startNode, long &startOffset,
00763         DOM::Node &endNode, long &endOffset) const;
00764 
00768   void setSelection( const DOM::Range & );
00769 
00778   bool hasSelection() const;
00779 
00783   void selectAll();
00784 
00790   void show();
00791 
00797   void hide();
00798 
00803   KParts::PartManager *partManager();
00804 
00812   virtual void saveState( QDataStream &stream );
00822   virtual void restoreState( QDataStream &stream );
00823 
00830   DOM::Node nodeUnderMouse() const;
00831 
00840   DOM::Node nonSharedNodeUnderMouse() const;
00841 
00845   const KHTMLSettings *settings() const;
00846 
00853   KHTMLPart *parentPart();
00854 
00860   QStringList frameNames() const;
00861 
00862   QPtrList<KParts::ReadOnlyPart> frames() const;
00863 
00867   KHTMLPart *findFrame( const QString &f );
00868 
00877   KHTMLPart *findFrameParent( KParts::ReadOnlyPart *callingPart, const QString &f, khtml::ChildFrame **childFrame=0 );
00878 
00884   KParts::ReadOnlyPart *currentFrame() const;
00885 
00892   bool frameExists( const QString &frameName );
00893 
00894 
00900   void setJSStatusBarText( const QString &text );
00901 
00907   void setJSDefaultStatusBarText( const QString &text );
00908 
00914   QString jsStatusBarText() const;
00915 
00921   QString jsDefaultStatusBarText() const;
00922 
00926   QString referrer() const;
00927 
00931   QString pageReferrer() const;
00932 
00936   QString lastModified() const;
00937 
00941   void preloadStyleSheet( const QString &url, const QString &stylesheet );
00942 
00946   void preloadScript( const QString &url, const QString &script );
00947 
00951   bool restored() const;
00952 
00953   // ### KDE4 remove me
00954   enum FormNotification { NoNotification = 0, Before, Only, Unused=255 };
00961   void setFormNotification(FormNotification fn);
00962 
00969   FormNotification formNotification() const;
00970 
00978   KURL toplevelURL();
00979 
00986   bool isModified() const;
00987 
00988 signals:
00992   void onURL( const QString &url );
00993 
00997   void popupMenu( const QString &url, const QPoint &point );
00998 
01002   void selectionChanged();
01003 
01011   void nodeActivated( const DOM::Node & );
01012 
01015   void docCreated();
01016 
01028   void caretPositionChanged(const DOM::Node &node, long offset);
01029 
01030 
01037   void formSubmitNotification(const char *action, const QString& url,
01038                   const QByteArray& formData, const QString& target,
01039                   const QString& contentType, const QString& boundary);
01040 
01041 
01042 protected:
01043 
01048   KURL completeURL( const QString &url );
01049 
01056   void htmlError( int errorCode, const QString& text, const KURL& reqUrl );
01057 
01058   virtual void customEvent( QCustomEvent *event );
01059 
01063   virtual void khtmlMousePressEvent( khtml::MousePressEvent *event );
01067   virtual void khtmlMouseDoubleClickEvent( khtml::MouseDoubleClickEvent * );
01071   virtual void khtmlMouseMoveEvent( khtml::MouseMoveEvent *event );
01075   virtual void khtmlMouseReleaseEvent( khtml::MouseReleaseEvent *event );
01079   virtual void khtmlDrawContentsEvent( khtml::DrawContentsEvent * );
01080 
01084   virtual void guiActivateEvent( KParts::GUIActivateEvent *event );
01085 
01089   virtual bool openFile();
01090 
01091   virtual void urlSelected( const QString &url, int button, int state,
01092                             const QString &_target, KParts::URLArgs args = KParts::URLArgs());
01093 
01102   virtual KParts::ReadOnlyPart *createPart( QWidget *parentWidget, const char *widgetName,
01103                                             QObject *parent, const char *name,
01104                                             const QString &mimetype, QString &serviceName,
01105                                             QStringList &serviceTypes, const QStringList &params);
01106 
01107   // This is for RenderPartObject. We want to ask the 'download plugin?'
01108   // question only once per mimetype
01109   bool pluginPageQuestionAsked( const QString& mimetype ) const;
01110   void setPluginPageQuestionAsked( const QString& mimetype );
01111 
01112   enum PageSecurity { NotCrypted, Encrypted, Mixed };
01113   void setPageSecurity( PageSecurity sec );
01114 
01118   virtual bool doOpenStream( const QString& mimeType );
01119 
01123   virtual bool doWriteStream( const QByteArray& data );
01124 
01128   virtual bool doCloseStream();
01129 
01130 public slots:
01131 
01141   void setActiveNode( const DOM::Node &node );
01142 
01146   void stopAnimations();
01147 
01148   QCString dcopObjectId() const;
01149 
01157   QVariant executeScript( const QString &script );
01158 
01169   void setCaretMode(bool enable);
01170 
01182   void setEditable(bool enable);
01183 
01200   void setCaretVisible(bool show);
01201 
01202   // ### KDE4 FIXME:
01203   //          Remove this and make the one below protected+virtual slot.
01204   //          Warning: this is effectively "internal".  Be careful.
01205   // @since 3.2
01206   void submitFormProxy( const char *action, const QString &url,
01207                         const QByteArray &formData,
01208                         const QString &target,
01209                         const QString& contentType = QString::null,
01210                         const QString& boundary = QString::null );
01211 
01212 private slots:
01217   void gotoAnchor();
01218 
01222   void reparseConfiguration();
01223 
01227   void slotData( KIO::Job*, const QByteArray &data );
01231   void slotInfoMessage( KIO::Job*, const QString& msg );
01235   void slotRestoreData( const QByteArray &data );
01239   void slotFinished( KIO::Job* );
01243   void slotFinishedParsing();
01247   void slotRedirect();
01251   void slotRedirection( KIO::Job*, const KURL& );
01255   void slotDebugScript();
01259   void slotDebugDOMTree();
01263   void slotDebugRenderTree();
01267   void slotStopAnimations();
01271   virtual void slotViewDocumentSource();
01275   virtual void slotViewFrameSource();
01279   void slotViewPageInfo();
01283   virtual void slotSaveBackground();
01287   virtual void slotSaveDocument();
01291   virtual void slotSaveFrame();
01295   virtual void slotSecurity();
01299   virtual void slotSetEncoding();
01300 
01304   virtual void slotUseStylesheet();
01305 
01306   virtual void slotFind();
01307   virtual void slotFindDone(); // ### remove me
01308   virtual void slotFindDialogDestroyed();
01309   void slotFindNext();
01310 
01311   void slotIncZoom();
01312   void slotDecZoom();
01313   void slotIncZoomFast();
01314   void slotDecZoomFast();
01315 
01316   void slotLoadImages();
01317   void slotWalletClosed();
01318   void launchWalletManager();
01319   void walletMenu();
01320 
01324   void submitFormAgain();
01325 
01329   void updateActions();
01333   void slotPartRemoved( KParts::Part *part );
01337   void slotActiveFrameChanged( KParts::Part *part );
01341   void slotChildStarted( KIO::Job *job );
01345   void slotChildCompleted();
01349   void slotChildCompleted( bool );
01353   void slotParentCompleted();
01357   void slotChildURLRequest( const KURL &url, const KParts::URLArgs &args );
01361   void slotChildDocCreated();
01365   void slotRequestFocus( KParts::ReadOnlyPart * );
01366   void slotLoaderRequestStarted( khtml::DocLoader*, khtml::CachedObject* obj);
01367   void slotLoaderRequestDone( khtml::DocLoader*, khtml::CachedObject *obj );
01368   void checkCompleted();
01369 
01373   void slotAutoScroll();
01374 
01375   void slotPrintFrame();
01376 
01377   void slotSelectAll();
01378 
01382   void slotProgressUpdate();
01383 
01384   /*
01385    * @internal
01386    */
01387   void slotJobPercent( KIO::Job*, unsigned long );
01388 
01389   /*
01390    * @internal
01391    */
01392   void slotJobDone( KIO::Job* );
01393 
01394   /*
01395    * @internal
01396    */
01397   void slotUserSheetStatDone( KIO::Job* );
01398 
01399   /*
01400    * @internal
01401    */
01402   void slotJobSpeed( KIO::Job*, unsigned long );
01403 
01407   void slotClearSelection();
01408 
01412   void slotZoomView( int );
01413 
01417   void slotHighlight( const QString &, int index, int length );
01418 
01422   void slotAutomaticDetectionLanguage( int _id );
01423 
01427   void slotToggleCaretMode();
01428 
01432   void launchJSErrorDialog();
01433 
01437   void removeJSErrorExtension();
01438 
01442   void disableJSErrorExtension();
01443 
01447   void jsErrorDialogContextMenu();
01448 
01452   void restoreScrollPosition();
01453 
01454 private:
01455 
01456   KJSErrorDlg *jsErrorExtension();
01457 
01458   enum StatusBarPriority { BarDefaultText, BarHoverText, BarOverrideText };
01459   void setStatusBarText( const QString& text, StatusBarPriority p);
01460 
01461   bool restoreURL( const KURL &url );
01462   void emitSelectionChanged();
01463   // Returns whether callingHtmlPart may access this part
01464   bool checkFrameAccess(KHTMLPart *callingHtmlPart);
01465   bool openURLInFrame( const KURL &url, const KParts::URLArgs &urlArgs );
01466   void startAutoScroll();
01467   void stopAutoScroll();
01468   void overURL( const QString &url, const QString &target, bool shiftPressed = false );
01469 
01470   bool processObjectRequest( khtml::ChildFrame *child, const KURL &url, const QString &mimetype );
01471 
01472   KWallet::Wallet* wallet();
01473 
01477   // ### KDE4 FIXME:
01478   //          It is desirable to be able to filter form submissions as well.
01479   //          For instance, forms can have a target and an inheriting class
01480   //          might want to filter based on the target.  Make this protected
01481   //          and virtual, or provide a better solution.
01482   //          See the web_module for the sidebar for an example where this is
01483   //          necessary.
01484   void submitForm( const char *action, const QString &url, const QByteArray &formData,
01485                    const QString &target, const QString& contentType = QString::null,
01486                    const QString& boundary = QString::null );
01487 
01488   void popupMenu( const QString &url );
01489 
01490   void init( KHTMLView *view, GUIProfile prof );
01491 
01492 
01493   void clear();
01494 
01495   bool scheduleScript( const DOM::Node &n, const QString& script);
01496 
01497   QVariant crossFrameExecuteScript(const QString& target, const QString& script);
01498   QVariant executeScheduledScript();
01499 
01500   bool requestFrame( khtml::RenderPart *frame, const QString &url, const QString &frameName,
01501                      const QStringList &args = QStringList(), bool isIFrame = false );
01502 
01510   QString requestFrameName();
01511 
01512   bool requestObject( khtml::RenderPart *frame, const QString &url, const QString &serviceType,
01513                       const QStringList &args = QStringList() );
01514 
01515   bool requestObject( khtml::ChildFrame *child, const KURL &url, const KParts::URLArgs &args = KParts::URLArgs() );
01516 
01517   DOM::EventListener *createHTMLEventListener( QString code, QString name );
01518 
01519   DOM::HTMLDocumentImpl *docImpl() const;
01520   DOM::DocumentImpl *xmlDocImpl() const;
01521   khtml::ChildFrame *frame( const QObject *obj );
01522 
01523   khtml::ChildFrame *recursiveFrameRequest( KHTMLPart *callingHtmlPart, const KURL &url, const KParts::URLArgs &args, bool callParent = true );
01524 
01525   bool checkLinkSecurity( const KURL &linkURL,const QString &message = QString::null, const QString &button = QString::null );
01526   QVariant executeScript( const QString& filename, int baseLine, const DOM::Node &n, const QString& script );
01527 
01528   KJSProxy *jScript();
01529 
01530   KHTMLPart *opener();
01531   long cacheId() const;
01532   void setOpener( KHTMLPart *_opener );
01533   bool openedByJS();
01534   void setOpenedByJS( bool _openedByJS );
01535 
01536   void checkEmitLoadEvent();
01537   void emitLoadEvent();
01538 
01539   bool initFindNode( bool selection, bool reverse, bool fromCursor );
01540 
01541   void extendSelection( DOM::NodeImpl* node, long offset, DOM::Node& selectionNode, long& selectionOffset, bool right, bool paragraph );
01551   void extendSelectionTo(int x, int y, int absX, int absY, const DOM::Node &innerNode);
01555   bool isExtendingSelection() const;
01556   khtml::Decoder *createDecoder();
01557   QString defaultEncoding() const;
01558 
01562   void zoomIn(const int stepping[], int count);
01566   void zoomOut(const int stepping[], int count);
01567 
01568   void emitCaretPositionChanged(const DOM::Node &node, long offset);
01569 
01570   void setDebugScript( bool enable );
01571 
01572   KHTMLPartPrivate *d;
01573   friend class KHTMLPartPrivate;
01574 };
01575 
01576 
01577 #endif
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This file is part of the documentation for khtml Library Version 3.3.1.
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