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krusader/krusader/KViewer/krviewer.cpp

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/***************************************************************************
krviewer.cpp - description
-------------------
begin : Thu Apr 18 2002
copyright : (C) 2002 by Shie Erlich & Rafi Yanai
email :
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
// TQt includes
#include <tqdatastream.h>
#include <tqfile.h>
#include <tqpopupmenu.h>
#include <tqtimer.h>
// KDE includes
#include <tdemenubar.h>
#include <kmimetype.h>
#include <tdelocale.h>
#include <tdeparts/part.h>
#include <tdeparts/componentfactory.h>
#include <tdemessagebox.h>
#include <klibloader.h>
#include <ktrader.h>
#include <tdeio/netaccess.h>
#include <tdeio/jobclasses.h>
#include <tdeio/job.h>
#include <kstatusbar.h>
#include <kdebug.h>
#include <klargefile.h>
#include <tdehtml_part.h>
#include <kprocess.h>
#include <tdefileitem.h>
// Krusader includes
#include "krviewer.h"
#include "../krusader.h"
#include "../defaults.h"
#include "../kicons.h"
#include "panelviewer.h"
#define VIEW_ICON "viewmag"
#define EDIT_ICON "edit"
#define MODIFIED_ICON "document-save-as"
TQPtrList<KrViewer> KrViewer::viewers;
KrViewer::KrViewer( TQWidget *parent, const char *name ) :
KParts::MainWindow( parent, name ), manager( this, this ), tabBar( this ), returnFocusTo( 0 ), returnFocusTab( 0 ),
reservedKeys(), reservedKeyIDs() {
//setWFlags(WType_TopLevel | WDestructiveClose);
setXMLFile( "krviewer.rc" ); // kpart-related xml file
setHelpMenuEnabled( false );
setAutoSaveSettings( "KrViewerWindow", true );
tmpFile.setAutoDelete( true );
connect( &manager, TQT_SIGNAL( activePartChanged( KParts::Part* ) ),
this, TQT_SLOT( createGUI( KParts::Part* ) ) );
connect( &tabBar, TQT_SIGNAL( currentChanged( TQWidget *) ),
this, TQT_SLOT( tabChanged(TQWidget*) ) );
connect( &tabBar, TQT_SIGNAL( closeRequest( TQWidget *) ),
this, TQT_SLOT( tabCloseRequest(TQWidget*) ) );
tabBar.setTabReorderingEnabled(false);
#if KDE_IS_VERSION(3,4,0)
tabBar.setAutomaticResizeTabs(true);
#endif
// "edit"
// "document-save-as"
setCentralWidget( &tabBar );
printAction = KStdAction::print( this, TQT_SLOT( print() ), 0, 0 );
copyAction = KStdAction::copy( this, TQT_SLOT( copy() ), 0, 0 );
viewerMenu = new TQPopupMenu( this );
viewerMenu->insertItem( i18n( "&Generic viewer" ), this, TQT_SLOT( viewGeneric() ), CTRL + SHIFT + Key_G, 1 );
viewerMenu->insertItem( i18n( "&Text viewer" ), this, TQT_SLOT( viewText() ), CTRL + SHIFT + Key_T, 2 );
viewerMenu->insertItem( i18n( "&Hex viewer" ), this, TQT_SLOT( viewHex() ), CTRL + SHIFT + Key_H, 3 );
viewerMenu->insertSeparator();
viewerMenu->insertItem( i18n( "Text &editor" ), this, TQT_SLOT( editText() ), CTRL + SHIFT + Key_E, 4 );
viewerMenu->insertSeparator();
viewerMenu->insertItem( i18n( "&Next tab" ), this, TQT_SLOT( nextTab() ), ALT+Key_Right );
viewerMenu->insertItem( i18n( "&Previous tab" ), this, TQT_SLOT( prevTab() ), ALT+Key_Left );
detachActionIndex = viewerMenu->insertItem( i18n( "&Detach tab" ), this, TQT_SLOT( detachTab() ), CTRL + SHIFT + Key_D );
//no point in detaching only one tab..
viewerMenu->setItemEnabled(detachActionIndex,false);
viewerMenu->insertSeparator();
viewerMenu->insertItem( printAction->text(), this, TQT_SLOT( print() ), printAction->shortcut() );
viewerMenu->insertItem( copyAction->text(), this, TQT_SLOT( copy() ), copyAction->shortcut() );
viewerMenu->insertSeparator();
tabCloseID = viewerMenu->insertItem( i18n( "&Close current tab" ), this, TQT_SLOT( tabCloseRequest() ), Key_Escape );
closeID = viewerMenu->insertItem( i18n( "&Quit" ), this, TQT_SLOT( close() ), CTRL + Key_Q );
//toolBar() ->insertLined("Edit:",1,"",this,"",true ,i18n("Enter an URL to edit and press enter"));
tabBar.setHoverCloseButton(true);
checkModified();
}
KrViewer::~KrViewer() {
disconnect( &manager, TQT_SIGNAL( activePartChanged( KParts::Part* ) ),
this, TQT_SLOT( createGUI( KParts::Part* ) ) );
viewers.remove( this );
delete printAction;
delete copyAction;
}
void KrViewer::createGUI( KParts::Part* part ) {
if ( part == 0 ) /* TDEHTMLPart calls this function with 0 at destruction. */
return ; /* Can cause crash after JavaScript self.close() if removed */
// and show the new part widget
connect( part, TQT_SIGNAL( setStatusBarText( const TQString& ) ),
this, TQT_SLOT( slotSetStatusBarText( const TQString& ) ) );
KParts::MainWindow::createGUI( part );
toolBar() ->insertLineSeparator(0);
PanelViewerBase *pvb = getPanelViewerBase( part );
if( pvb )
updateActions( pvb );
toolBar() ->show();
statusBar() ->show();
// the KParts part may override the viewer shortcuts. We prevent it
// by installing an event filter on the menuBar() and the part
reservedKeys.clear();
reservedKeyIDs.clear();
// getting the key sequences of the viewer menu
for( unsigned w=0; w != viewerMenu->count(); w++ )
{
int id = viewerMenu->idAt( w );
TQKeySequence sequence = viewerMenu->accel( id );
if( sequence.count() > 0 )
{
reservedKeys.push_back( sequence[ 0 ] );
reservedKeyIDs.push_back( id );
}
}
// and "fix" the menubar
menuBar() ->removeItem( 70 );
menuBar() ->insertItem( i18n( "&KrViewer" ), viewerMenu, 70 );
menuBar() ->show();
// filtering out the key events
menuBar() ->installEventFilter( this );
part->installEventFilter( this );
}
bool KrViewer::eventFilter ( TQObject * /* watched */, TQEvent * e )
{
if( e->type() == TQEvent::AccelOverride )
{
TQKeyEvent* ke = (TQKeyEvent*) e;
if( reservedKeys.contains( ke->key() ) )
{
ke->accept();
int id = reservedKeyIDs[ reservedKeys.findIndex( ke->key() ) ];
if( id != -1 )
{
// don't activate the close functions immediately!
// it can cause crash
if( id == tabCloseID )
TQTimer::singleShot( 0, this, TQT_SLOT( tabCloseRequest() ) );
else if( id == closeID )
TQTimer::singleShot( 0, this, TQT_SLOT( close() ) );
else {
int index = viewerMenu->indexOf( id );
viewerMenu->activateItemAt( index );
}
}
return true;
}
}
else if( e->type() == TQEvent::KeyPress )
{
TQKeyEvent* ke = (TQKeyEvent*) e;
if( reservedKeys.contains( ke->key() ) )
{
ke->accept();
return true;
}
}
return false;
}
void KrViewer::keyPressEvent( TQKeyEvent *e ) {
switch ( e->key() ) {
case Key_F10:
close();
break;
case Key_Escape:
tabCloseRequest();
break;
default:
e->ignore();
break;
}
}
KrViewer* KrViewer::getViewer(bool new_window){
if( !new_window ){
if( !viewers.first() ){
viewers.prepend( new KrViewer() ); // add to first (active)
}
else {
if( viewers.first()->isMinimized() ) // minimized? -> show it again
viewers.first()->showNormal();
viewers.first()->raise();
viewers.first()->setActiveWindow();
}
return viewers.first();
}
else {
KrViewer *newViewer = new KrViewer();
viewers.prepend( newViewer );
return newViewer;
}
}
void KrViewer::view( KURL url, TQWidget * parent ) {
Mode defaultMode = Generic;
bool defaultWindow = false;
krConfig->setGroup( "General" );
defaultWindow = krConfig->readBoolEntry( "View In Separate Window",_ViewInSeparateWindow );
TQString modeString = krConfig->readEntry( "Default Viewer Mode","generic" );
if( modeString == "generic" ) defaultMode = Generic;
else if( modeString == "text" ) defaultMode = Text;
else if( modeString == "hex" ) defaultMode = Hex;
view(url,defaultMode,defaultWindow, parent );
}
void KrViewer::view( KURL url, Mode mode, bool new_window, TQWidget * parent ) {
KrViewer* viewer = getViewer(new_window);
PanelViewerBase* viewWidget = new PanelViewer(&viewer->tabBar);
KParts::Part* part = viewWidget->openURL(url,mode);
viewer->addTab(viewWidget,i18n( "Viewing" ),VIEW_ICON,part);
viewer->returnFocusTo = parent;
viewer->returnFocusTab = viewWidget;
}
void KrViewer::edit( KURL url, TQWidget * parent ) {
edit( url, Text, -1, parent );
}
void KrViewer::edit( KURL url, Mode mode, int new_window, TQWidget * parent ) {
krConfig->setGroup( "General" );
TQString edit = krConfig->readEntry( "Editor", _Editor );
if( new_window == -1 )
new_window = krConfig->readBoolEntry( "View In Separate Window",_ViewInSeparateWindow );
if ( edit != "internal editor" ) {
TDEProcess proc;
// if the file is local, pass a normal path and not a url. this solves
// the problem for editors that aren't url-aware
if ( url.isLocalFile() )
proc << TQStringList::split( ' ', edit ) << url.path();
else proc << TQStringList::split( ' ', edit ) << url.prettyURL();
if ( !proc.start( TDEProcess::DontCare ) )
KMessageBox::sorry( krApp, i18n( "Can't open " ) + "\"" + edit + "\"" );
return ;
}
KrViewer* viewer = getViewer(new_window);
PanelViewerBase* editWidget = new PanelEditor(&viewer->tabBar);
KParts::Part* part = editWidget->openURL(url,mode);
viewer->addTab(editWidget,i18n("Editing"),EDIT_ICON,part);
viewer->returnFocusTo = parent;
viewer->returnFocusTab = editWidget;
}
void KrViewer::addTab(PanelViewerBase* pvb, TQString msg, TQString iconName ,KParts::Part* part){
if( !part ) return;
KURL url = pvb->url();
setCaption( msg+": " + url.prettyURL() );
TQIconSet icon = TQIconSet(krLoader->loadIcon(iconName,TDEIcon::Small));
manager.addPart( part, this );
manager.setActivePart( part );
tabBar.insertTab(pvb,icon,url.fileName()+"("+msg+")");
tabBar.setCurrentPage(tabBar.indexOf(pvb));
tabBar.setTabToolTip(pvb,msg+": " + url.prettyURL());
updateActions( pvb );
// now we can offer the option to detach tabs (we have more than one)
if( tabBar.count() > 1 ){
viewerMenu->setItemEnabled(detachActionIndex,true);
}
show();
tabBar.show();
connect( pvb, TQT_SIGNAL( urlChanged( PanelViewerBase *, const KURL & ) ),
this, TQT_SLOT( tabURLChanged(PanelViewerBase *, const KURL & ) ) );
}
void KrViewer::tabURLChanged( PanelViewerBase *pvb, const KURL & url ) {
TQString msg = pvb->isEditor() ? i18n( "Editing" ) : i18n( "Viewing" );
tabBar.setTabLabel( pvb, url.fileName()+"("+msg+")" );
tabBar.setTabToolTip(pvb,msg+": " + url.prettyURL());
}
void KrViewer::tabChanged(TQWidget* w){
manager.setActivePart( static_cast<PanelViewerBase*>(w)->part() );
if( static_cast<PanelViewerBase*>(w) != returnFocusTab ) {
returnFocusTo = 0;
returnFocusTab = 0;
}
// set this viewer to be the main viewer
if( viewers.remove( this ) ) viewers.prepend( this ); // move to first
}
void KrViewer::tabCloseRequest(TQWidget *w){
if( !w ) return;
// important to save as returnFocusTo will be cleared at removePart
TQWidget * returnFocusToThisWidget = returnFocusTo;
PanelViewerBase* pvb = static_cast<PanelViewerBase*>(w);
if( !pvb->queryClose() )
return;
manager.removePart(pvb->part());
pvb->closeURL();
tabBar.removePage(w);
if( tabBar.count() <= 0 ){
if( returnFocusToThisWidget ){
returnFocusToThisWidget->raise();
returnFocusToThisWidget->setActiveWindow();
}
else {
krApp->raise();
krApp->setActiveWindow();
}
delete this;
return;
} else if( tabBar.count() == 1 ){
//no point in detaching only one tab..
viewerMenu->setItemEnabled(detachActionIndex,false);
}
if( returnFocusToThisWidget ){
returnFocusToThisWidget->raise();
returnFocusToThisWidget->setActiveWindow();
}
}
void KrViewer::tabCloseRequest(){
tabCloseRequest( tabBar.currentPage() );
}
bool KrViewer::queryClose() {
for( int i=0; i != tabBar.count(); i++ ) {
PanelViewerBase* pvb = static_cast<PanelViewerBase*>( tabBar.page( i ) );
if( !pvb )
continue;
tabBar.setCurrentPage( i );
if( !pvb->queryClose() )
return false;
}
return true;
}
bool KrViewer::queryExit() {
return true; // don't let the reference counter reach zero
}
void KrViewer::viewGeneric(){
PanelViewerBase* pvb = static_cast<PanelViewerBase*>( tabBar.currentPage() );
if( !pvb ) return;
PanelViewerBase* viewerWidget = new PanelViewer(&tabBar);
KParts::Part* part = viewerWidget->openURL(pvb->url(),Generic);
addTab(viewerWidget,i18n("Viewing"),VIEW_ICON,part);
}
void KrViewer::viewText(){
PanelViewerBase* pvb = static_cast<PanelViewerBase*>( tabBar.currentPage() );
if( !pvb ) return;
PanelViewerBase* viewerWidget = new PanelViewer(&tabBar);
KParts::Part* part = viewerWidget->openURL(pvb->url(),Text);
addTab(viewerWidget,i18n("Viewing"),VIEW_ICON,part);
}
void KrViewer::viewHex(){
PanelViewerBase* pvb = static_cast<PanelViewerBase*>( tabBar.currentPage() );
if( !pvb ) return;
PanelViewerBase* viewerWidget = new PanelViewer(&tabBar);
KParts::Part* part = viewerWidget->openURL(pvb->url(),Hex);
addTab(viewerWidget,i18n("Viewing"),VIEW_ICON,part);
}
void KrViewer::editText(){
PanelViewerBase* pvb = static_cast<PanelViewerBase*>( tabBar.currentPage() );
if( !pvb ) return;
PanelViewerBase* editWidget = new PanelEditor(&tabBar);
KParts::Part* part = editWidget->openURL(pvb->url(),Text);
addTab(editWidget,i18n("Editing"),EDIT_ICON,part);
}
void KrViewer::checkModified(){
TQTimer::singleShot( 1000, this, TQT_SLOT(checkModified()) );
PanelViewerBase* pvb = static_cast<PanelViewerBase*>( tabBar.currentPage() );
if( !pvb ) return;
if( !pvb->part()->url().equals( pvb->url(), true ) ) {
pvb->setUrl( pvb->part()->url() );
}
// add a * to modified files.
if( pvb->isModified() ){
TQString label = tabBar.tabLabel(pvb);
if( !label.startsWith("*" + pvb->part()->url().fileName() ) ){
label.prepend("*");
TQIconSet icon = TQIconSet(krLoader->loadIcon(MODIFIED_ICON,TDEIcon::Small));
tabBar.changeTab(pvb,icon,label);
}
}
// remove the * from previously modified files.
else {
TQString label = tabBar.tabLabel(pvb);
if( label.startsWith("*" + pvb->part()->url().fileName() ) ){
label = label.mid( 1 );
TQIconSet icon = TQIconSet(krLoader->loadIcon(EDIT_ICON,TDEIcon::Small));
tabBar.changeTab(pvb,icon,label);
}
}
}
void KrViewer::nextTab(){
int index = (tabBar.currentPageIndex()+1)%tabBar.count();
tabBar.setCurrentPage( index );
}
void KrViewer::prevTab(){
int index = (tabBar.currentPageIndex()-1)%tabBar.count();
while( index < 0 ) index+=tabBar.count();
tabBar.setCurrentPage( index );
}
void KrViewer::detachTab(){
PanelViewerBase* pvb = static_cast<PanelViewerBase*>( tabBar.currentPage() );
if( !pvb ) return;
KrViewer* viewer = getViewer(true);
manager.removePart(pvb->part());
tabBar.removePage(pvb);
if( tabBar.count() == 1 ) {
//no point in detaching only one tab..
viewerMenu->setItemEnabled(detachActionIndex,false);
}
pvb->reparent(&viewer->tabBar,TQPoint(0,0));
if( pvb->isEditor() )
viewer->addTab(pvb,i18n( "Editing" ),EDIT_ICON,pvb->part());
else
viewer->addTab(pvb,i18n( "Viewing" ),VIEW_ICON,pvb->part());
}
void KrViewer::windowActivationChange ( bool /* oldActive */ ) {
if( isActiveWindow() )
if( viewers.remove( this ) ) viewers.prepend( this ); // move to first
}
void KrViewer::print() {
PanelViewerBase* pvb = static_cast<PanelViewerBase*>( tabBar.currentPage() );
if( !pvb ) return;
KParts::BrowserExtension * ext = KParts::BrowserExtension::childObject( pvb->part() );
if( ext && ext->isActionEnabled( "print" ) )
Invoker( ext, TQT_SLOT( print() ) ).invoke();
}
void KrViewer::copy() {
PanelViewerBase* pvb = static_cast<PanelViewerBase*>( tabBar.currentPage() );
if( !pvb ) return;
KParts::BrowserExtension * ext = KParts::BrowserExtension::childObject( pvb->part() );
if( ext && ext->isActionEnabled( "copy" ) )
Invoker( ext, TQT_SLOT( copy() ) ).invoke();
}
PanelViewerBase * KrViewer::getPanelViewerBase( KParts::Part * part ) {
for( int i=0; i != tabBar.count(); i++ ) {
PanelViewerBase *pvb = static_cast<PanelViewerBase*>( tabBar.page( i ) );
if( pvb && pvb->part() == part )
return pvb;
}
return 0;
}
void KrViewer::updateActions( PanelViewerBase * pvb ) {
if( pvb->isEditor() ) {
printAction->unplugAll();
copyAction->unplugAll();
}
else {
if( !printAction->isPlugged( toolBar() ) )
printAction->plug( toolBar(), 0 );
if( !copyAction->isPlugged( toolBar() ) )
copyAction->plug( toolBar(), 1 );
}
}
#if 0
bool KrViewer::editGeneric( TQString mimetype, KURL _url ) {
KParts::ReadWritePart * kedit_part = 0L;
KLibFactory *factory = 0;
TDETrader::OfferList offers = TDETrader::self() ->query( mimetype );
// in theory, we only care about the first one.. but let's try all
// offers just in case the first can't be loaded for some reason
TDETrader::OfferList::Iterator it( offers.begin() );
for ( ; it != offers.end(); ++it ) {
KService::Ptr ptr = ( *it );
// we now know that our offer can handle mimetype and is a part.
// since it is a part, it must also have a library... let's try to
// load that now
factory = KLibLoader::self() ->factory( ptr->library().latin1() );
if ( factory ) {
kedit_part = static_cast<KParts::ReadWritePart *>( factory->create( this,
ptr->name().latin1(), "KParts::ReadWritePart" ) );
if ( kedit_part )
if ( kedit_part->openURL( _url ) ) break;
else {
delete kedit_part;
kedit_part = 0L;
}
}
}
if ( !kedit_part ) {
KMessageBox::error( this, i18n( "Sorry, can't find internal editor" ) );
return false;
}
setCentralWidget( kedit_part->widget() );
createGUI( kedit_part );
kedit_part->widget() ->show();
return true;
}
bool KrViewer::editText( bool create ) {
if ( !editor_part ) {
editor_part = static_cast<KParts::ReadWritePart*>( getPart( url, "text/plain", false, create ) );
if ( !editor_part ) return false;
manager.addPart( editor_part, this );
}
manager.setActivePart( editor_part );
tabBar.addTab(editor_part->widget(),url.fileName());
return true;
}
bool KrViewer::viewGeneric() {
TQString mimetype = KMimeType::findByURL( url ) ->name();
// ugly hack: don't try to get a part for an XML file, it usually don't work
if ( mimetype == "text/xml" ) return false;
if ( url.prettyURL().startsWith( "man:" ) ) mimetype = "text/html";
if ( mimetype == "text/plain" )
viewerMenu->setItemEnabled( 1, false );
if ( !generic_part ) {
if ( mimetype.contains( "html" ) ) {
TDEHTMLPart * p = new TDEHTMLPart( this, 0, 0, 0, TDEHTMLPart::BrowserViewGUI );
connect( p->browserExtension(), TQT_SIGNAL( openURLRequest( const KURL &, const KParts::URLArgs & ) ),
this, TQT_SLOT( handleOpenURLRequest( const KURL &, const KParts::URLArgs & ) ) );
/* At JavaScript self.close() the TDEHTMLPart destroys itself. */
/* After destruction, just close the window */
connect( p, TQT_SIGNAL( destroyed() ), this, TQT_SLOT( close() ) );
p-> openURL( url );
generic_part = p;
} else {
generic_part = static_cast<KParts::ReadOnlyPart*>( getPart( url, mimetype, true ) );
}
if ( generic_part ) manager.addPart( generic_part, this );
else return false;
}
manager.setActivePart( generic_part );
tabBar.addTab(generic_part->widget(),url.fileName());
return true;
}
bool KrViewer::viewText() {
if ( !text_part ) {
text_part = static_cast<KParts::ReadOnlyPart*>( getPart( url, "text/plain", true ) );
if ( !text_part ) return false;
manager.addPart( text_part, this );
}
manager.setActivePart( text_part );
tabBar.addTab(text_part->widget(),url.fileName());
return true;
}
void KrViewer::viewHex() {
if ( !hex_part ) {
TQString file;
// files that are not local must first be downloaded
if ( !url.isLocalFile() ) {
if ( !TDEIO::NetAccess::download( url, file ) ) {
KMessageBox::sorry( this, i18n( "KrViewer is unable to download: " ) + url.url() );
return ;
}
} else file = url.path();
// create a hex file
TQFile f_in( file );
f_in.open( IO_ReadOnly );
TQDataStream in( &f_in );
FILE *out = KDE_fopen( tmpFile.name().local8Bit(), "w" );
TDEIO::filesize_t fileSize = f_in.size();
TDEIO::filesize_t address = 0;
char buf[ 16 ];
unsigned int* pBuff = ( unsigned int* ) buf;
while ( address < fileSize ) {
memset( buf, 0, 16 );
int bufSize = ( ( fileSize - address ) > 16 ) ? 16 : ( fileSize - address );
in.readRawBytes( buf, bufSize );
fprintf( out, "0x%8.8llx: ", address );
for ( int i = 0; i < 4; ++i ) {
if ( i < ( bufSize / 4 ) ) fprintf( out, "%8.8x ", pBuff[ i ] );
else fprintf( out, " " );
}
fprintf( out, "| " );
for ( int i = 0; i < bufSize; ++i ) {
if ( buf[ i ] > ' ' && buf[ i ] < '~' ) fputc( buf[ i ], out );
else fputc( '.', out );
}
fputc( '\n', out );
address += 16;
}
// clean up
f_in.close();
fclose( out );
if ( !url.isLocalFile() )
TDEIO::NetAccess::removeTempFile( file );
hex_part = static_cast<KParts::ReadOnlyPart*>( getPart( tmpFile.name(), "text/plain", true ) );
if ( !hex_part ) return ;
manager.addPart( hex_part, this );
}
manager.setActivePart( hex_part );
tabBar.addTab(hex_part->widget(),url.fileName());
}
#endif
#include "krviewer.moc"
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