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673 lines
17 KiB
673 lines
17 KiB
/* This file is part of the KDE project
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Copyright (C) 2004 Frans Englich <frans.englich@telia.com>
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Copyright (C) 2003 Matthias Kretz <kretz@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <tqapplication.h>
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#include <tqcursor.h>
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#include <tqdatastream.h>
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#include <tqevent.h>
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#include <tqfileinfo.h>
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#include <tqframe.h>
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#include <tqlabel.h>
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#include <tqlayout.h>
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#include <tqpoint.h>
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#include <tqscrollview.h>
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#include <tqtextstream.h>
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#include <tqvbox.h>
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#include <tqwhatsthis.h>
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#include <tqwidget.h>
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#include <dcopclient.h>
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#include <qxembed.h>
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#include <tdeapplication.h>
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#include <tdeaboutdata.h>
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#include <tdecmodule.h>
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#include <tdecmoduleinfo.h>
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#include <tdecmoduleloader.h>
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#include <kdebug.h>
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#include <kdialog.h>
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#include <tdelocale.h>
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#include <tdeprocess.h>
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#include <kservice.h>
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#include <kstandarddirs.h>
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#include <kuser.h>
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#include <X11/Xlib.h>
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#include "tdecmoduleproxy.h"
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#include "tdecmoduleproxyIface.h"
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#include "tdecmoduleproxyIfaceImpl.h"
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/***************************************************************/
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class TDECModuleProxy::TDECModuleProxyPrivate
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{
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public:
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TDECModuleProxyPrivate( const TDECModuleInfo & info )
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: args( 0 )
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, kcm( 0 )
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//, view( 0 )
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, embedWidget( 0 )
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, rootProcess ( 0 )
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, embedFrame ( 0 )
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, dcopObject( 0 )
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, dcopClient( 0 )
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, topLayout( 0 )
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, rootCommunicator( 0 )
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, rootInfo( 0 )
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, modInfo( info )
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, withFallback( false )
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, changed( false )
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, rootMode( false )
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, bogusOccupier( false )
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, isInitialized( false )
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{}
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~TDECModuleProxyPrivate()
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{
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delete rootInfo; // Delete before embedWidget!
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delete embedWidget; // Delete before embedFrame!
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delete embedFrame;
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delete dcopClient;
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delete dcopObject;
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delete rootCommunicator;
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delete rootProcess;
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delete kcm;
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}
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TQStringList args;
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TDECModule *kcm;
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QXEmbed *embedWidget;
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TDEProcess *rootProcess;
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TQVBox *embedFrame;
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TDECModuleProxyIfaceImpl *dcopObject;
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DCOPClient *dcopClient;
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TQVBoxLayout *topLayout; /* Contains TQScrollView view, and root stuff */
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TDECModuleProxyRootCommunicatorImpl *rootCommunicator;
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TQLabel *rootInfo;
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TQCString dcopName;
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TDECModuleInfo modInfo;
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bool withFallback;
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bool changed;
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bool rootMode;
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bool bogusOccupier;
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bool isInitialized;
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};
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/***************************************************************/
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/*
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TODO:
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- How TDECModuleProxy behaves wrt memory leaks and behavior, when exiting
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from root mode is not tested, because no code make use of it. It needs
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work, if it should be used.
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- Should write a document which outlines test cases, to avoid
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regressions. This class is a hazard.
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- Two Layout problems in runAsRoot:
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* lblBusy doesn't show
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* d->kcm/d->rootInfo doesn't get it right when the user
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presses cancel in the tdesu dialog
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- Resizing horizontally is contrained; minimum size is set somewhere.
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It appears to be somehow derived from the module's size.
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- Prettify: set icon in KCMultiDialog.
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- Perhaps it's possible to link against tdesu such that
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the dialog is in process?
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*/
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/***************************************************************/
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TDECModule * TDECModuleProxy::realModule() const
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{
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/*
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* Note, don't call any function that calls realModule() since
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* that leads to an infinite loop.
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*/
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kdDebug(711) << k_funcinfo << endl;
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/* Already loaded */
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if( d->kcm )
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return d->kcm;
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/* /We/ have no kcm, but tdecmshell running with root prevs does.. */
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if( d->rootMode )
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return 0;
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TQApplication::setOverrideCursor( TQt::WaitCursor );
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TDECModuleProxy * that = const_cast<TDECModuleProxy*>( this );
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if( !d->isInitialized )
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{
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d->dcopName = TQString(moduleInfo().handle().prepend("TDECModuleProxy-")).utf8();
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d->topLayout = new TQVBoxLayout( that, 0, 0, "topLayout" );
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d->isInitialized = true;
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}
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if( !d->dcopClient )
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d->dcopClient = new DCOPClient();
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if( !d->dcopClient->isRegistered() )
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d->dcopClient->registerAs( d->dcopName, false );
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d->dcopClient->setAcceptCalls( true );
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if( d->dcopClient->appId() == d->dcopName || d->bogusOccupier )
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{ /* We got the name we requested, because no one was before us,
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* or, it was an random application which had picked that name */
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kdDebug(711) << "Module not already loaded, loading module" << endl;
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d->dcopObject = new TDECModuleProxyIfaceImpl( d->dcopName, that );
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d->kcm = TDECModuleLoader::loadModule( moduleInfo(), TDECModuleLoader::Inline, d->withFallback,
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that, name(), d->args );
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connect( d->kcm, TQ_SIGNAL( changed( bool ) ),
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TQ_SLOT(moduleChanged(bool)) );
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connect( d->kcm, TQ_SIGNAL( destroyed() ),
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TQ_SLOT( moduleDestroyed() ) );
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connect( d->kcm, TQ_SIGNAL(quickHelpChanged()),
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TQ_SIGNAL(quickHelpChanged()));
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TQWhatsThis::add( that, d->kcm->quickHelp() );
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d->topLayout->addWidget( d->kcm );
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if ( !d->rootInfo && /* If the message was not yet created */
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d->kcm->useRootOnlyMsg() /* and the module requests the message */ &&
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moduleInfo().needsRootPrivileges() /* and the module wants root access */ &&
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!KUser().isSuperUser() ) /* and we are not currently root */
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{
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d->rootInfo = new TQLabel( that, "rootInfo" );
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d->topLayout->insertWidget( 0, d->rootInfo );
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d->rootInfo->setFrameShape(TQFrame::Box);
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d->rootInfo->setFrameShadow(TQFrame::Raised);
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const TQString msg = d->kcm->rootOnlyMsg();
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if( msg.isEmpty() )
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d->rootInfo->setText(i18n(
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"<b>Changes in this section requires root access.</b><br />"
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"Click the \"Administrator Mode\" button to "
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"allow modifications."));
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else
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d->rootInfo->setText(msg);
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TQWhatsThis::add( d->rootInfo, i18n(
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"This section requires special permissions, probably "
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"for system-wide changes; therefore, it is "
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"required that you provide the root password to be "
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"able to change the module's properties. If "
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"you do not provide the password, the module will be "
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"disabled."));
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}
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}
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else
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{
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kdDebug(711) << "Module already loaded, loading KCMError" << endl;
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d->dcopClient->detach();
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/* Re-register as anonymous */
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d->dcopClient->attach();
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d->dcopClient->setNotifications( true );
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connect( d->dcopClient, TQ_SIGNAL( applicationRemoved( const TQCString& )),
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TQ_SLOT( applicationRemoved( const TQCString& )));
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/* Figure out the name of where the module is already loaded */
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TQByteArray replyData, data;
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TQCString replyType;
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TQString result;
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TQDataStream arg, stream( replyData, IO_ReadOnly );
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if( d->dcopClient->call( d->dcopName, d->dcopName, "applicationName()",
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data, replyType, replyData ))
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{
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stream >> result;
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d->kcm = TDECModuleLoader::reportError( TDECModuleLoader::Inline,
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i18n( "Argument is application name", "This configuration section is "
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"already opened in %1" ).arg( result ), " ", that );
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d->topLayout->addWidget( d->kcm );
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}
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else
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{
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kdDebug(711) << "Calling TDECModuleProxy's DCOP interface for fetching the name failed." << endl;
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d->bogusOccupier = true;
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TQApplication::restoreOverrideCursor();
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return realModule();
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}
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}
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TQApplication::restoreOverrideCursor();
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return d->kcm;
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}
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void TDECModuleProxy::applicationRemoved( const TQCString& app )
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{
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if( app == d->dcopName )
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{
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/* Violence: Get rid of KCMError & CO, so that
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* realModule() attempts to reload the module */
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delete d->kcm;
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d->kcm = 0;
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d->dcopClient->setNotifications( false );
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realModule();
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d->kcm->show();
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}
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}
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void TDECModuleProxy::showEvent( TQShowEvent * ev )
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{
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kdDebug(711) << k_funcinfo << endl;
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( void )realModule();
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/* We have no kcm, if we're in root mode */
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if( d->kcm )
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d->kcm->show();
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TQWidget::showEvent( ev );
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}
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void TDECModuleProxy::runAsRoot()
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{
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if ( !moduleInfo().needsRootPrivileges() )
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return;
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TQApplication::setOverrideCursor( TQt::WaitCursor );
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delete d->rootProcess;
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delete d->embedWidget;
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delete d->embedFrame;
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d->embedFrame = new TQVBox( this, "embedFrame" );
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d->embedFrame->setFrameStyle( TQFrame::Box | TQFrame::Raised );
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TQPalette pal( red );
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pal.setColor( TQColorGroup::Background,
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colorGroup().background() );
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d->embedFrame->setPalette( pal );
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d->embedFrame->setLineWidth( 2 );
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d->embedFrame->setMidLineWidth( 2 );
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d->topLayout->addWidget(d->embedFrame,1);
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d->embedWidget = new QXEmbed( d->embedFrame, "embedWidget" );
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d->embedFrame->show();
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TQLabel *lblBusy = new TQLabel(i18n("<big>Loading...</big>"), d->embedWidget, "lblBusy" );
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lblBusy->setTextFormat(RichText);
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lblBusy->setAlignment(AlignCenter);
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lblBusy->setGeometry(0,0, d->kcm->width(), d->kcm->height());
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lblBusy->show();
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deleteClient();
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/* The DCOP registration is now gone, and it will occur again when tdecmshell soon
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* registers. Here's a race condition in other words, but how likely is that?
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*
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* - It's a user initiated action, which means the user have to do weird stuff, very
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* quick.
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* - If the user _do_ manage to fsck up, the code will recover gracefully, see realModule().
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*
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* So no worry. At the end of this function, communication with
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* the DCOP object is established.
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*/
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/* Prepare the process to run the tdecmshell */
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TQString cmd = moduleInfo().service()->exec().stripWhiteSpace();
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if (cmd.left(5) == "tdesu")
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{
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cmd = TQString(cmd.remove(0,5)).stripWhiteSpace();
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/* Remove all tdesu switches */
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while( cmd.length() > 1 && cmd[ 0 ] == '-' )
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cmd = TQString(cmd.remove( 0, cmd.find( ' ' ) )).stripWhiteSpace();
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}
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if (cmd.left(8) == "tdecmshell")
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cmd = TQString(cmd.remove(0,8)).stripWhiteSpace();
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/* Run the process */
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TQString tdesu = TDEStandardDirs::findExe("tdesu");
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if (!tdesu.isEmpty())
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{
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d->rootProcess = new TDEProcess;
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*d->rootProcess << tdesu;
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*d->rootProcess << "--nonewdcop" << "-n" << "-d" << TQString( "-i%1" ).arg(moduleInfo().icon());
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*d->rootProcess << TQString("%1 %2 --embed-proxy %3 --lang %4").arg(locate("exe", "tdecmshell"))
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.arg(cmd).arg(d->embedWidget->winId()).arg(TDEGlobal::locale()->language());
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connect(d->rootProcess, TQ_SIGNAL(processExited(TDEProcess*)), TQ_SLOT(rootExited()));
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if ( !d->rootProcess->start( TDEProcess::NotifyOnExit ))
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{
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d->rootMode = false;
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rootExited();
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}
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else
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{
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d->rootMode = true;
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kapp->dcopClient();
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d->rootCommunicator = new TDECModuleProxyRootCommunicatorImpl( d->dcopName + "-RootCommunicator", this );
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}
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delete lblBusy;
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TQApplication::restoreOverrideCursor();
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return;
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}
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/* Clean up in case of failure */
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delete d->embedWidget;
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d->embedWidget = 0;
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delete d->embedFrame;
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d->embedFrame = 0;
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TQApplication::restoreOverrideCursor();
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}
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void TDECModuleProxy::rootExited()
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{
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kdDebug(711) << k_funcinfo << endl;
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if ( d->embedWidget->embeddedWinId() )
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XDestroyWindow(tqt_xdisplay(), d->embedWidget->embeddedWinId());
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delete d->embedWidget;
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d->embedWidget = 0;
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delete d->rootProcess;
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d->rootProcess = 0;
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delete d->embedFrame;
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d->embedFrame=0;
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delete d->rootCommunicator;
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d->rootCommunicator = 0;
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/* Such that the "ordinary" module loads again */
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d->rootMode = false;
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d->topLayout->invalidate();
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TQShowEvent ev;
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showEvent( &ev );
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moduleChanged( false );
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emit childClosed();
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}
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TDECModuleProxy::~TDECModuleProxy()
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{
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deleteClient();
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TDECModuleLoader::unloadModule(moduleInfo());
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delete d;
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}
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void TDECModuleProxy::deleteClient()
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{
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if( d->embedWidget )
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XKillClient(tqt_xdisplay(), d->embedWidget->embeddedWinId());
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delete d->kcm;
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d->kcm = 0;
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delete d->dcopObject;
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d->dcopObject = 0;
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if( d->dcopClient && !d->dcopClient->detach() )
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kdDebug(711) << "Unregistering from DCOP failed." << endl;
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delete d->dcopClient;
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d->dcopClient = 0;
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kapp->syncX();
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}
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void TDECModuleProxy::moduleChanged( bool c )
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{
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if( d->changed == c )
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return;
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d->changed = c;
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emit changed( c );
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emit changed( this );
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}
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void TDECModuleProxy::moduleDestroyed()
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{
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d->kcm = 0;
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}
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TDECModuleProxy::TDECModuleProxy( const KService::Ptr & service, bool withFallback,
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TQWidget * parent, const char * name, const TQStringList & args)
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: TQWidget( parent, name )
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{
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init( TDECModuleInfo( service ));
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d->args = args;
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d->withFallback = withFallback;
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}
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TDECModuleProxy::TDECModuleProxy( const TDECModuleInfo & info, bool withFallback,
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TQWidget * parent, const char * name, const TQStringList & args )
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: TQWidget( parent, name )
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{
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init( info );
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d->args = args;
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d->withFallback = withFallback;
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}
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TDECModuleProxy::TDECModuleProxy( const TQString& serviceName, bool withFallback,
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TQWidget * parent, const char * name,
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const TQStringList & args)
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: TQWidget( parent, name )
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{
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init( TDECModuleInfo( serviceName ));
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d->args = args;
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d->withFallback = withFallback;
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}
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void TDECModuleProxy::init( const TDECModuleInfo& info )
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{
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kdDebug(711) << k_funcinfo << endl;
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d = new TDECModuleProxyPrivate( info );
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/* This is all we do for now; all the heavy work is
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* done in realModule(). It's called when the module
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* _actually_ is needed, in for example showEvent().
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* The module is loaded "on demand" -- lazy loading.
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*/
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}
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void TDECModuleProxy::load()
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{
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if( d->rootMode )
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callRootModule( "load()" );
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else if( realModule() )
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{
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d->kcm->load();
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moduleChanged( false );
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}
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}
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void TDECModuleProxy::save()
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{
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if( d->rootMode )
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callRootModule( "save()" );
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else if( d->changed && realModule() )
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{
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d->kcm->save();
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moduleChanged( false );
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}
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}
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void TDECModuleProxy::callRootModule( const TQCString& function )
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{
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TQByteArray sendData, replyData;
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TQCString replyType;
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|
|
/* Note, we don't use d->dcopClient here, because it's used for
|
|
* the loaded module(and it's not "us" when this function is called) */
|
|
if( !kapp->dcopClient()->call( d->dcopName, d->dcopName, function, sendData,
|
|
replyType, replyData, true, -1 ))
|
|
kdDebug(711) << "Calling function '" << function << "' failed." << endl;
|
|
|
|
}
|
|
|
|
void TDECModuleProxy::defaults()
|
|
{
|
|
if( d->rootMode )
|
|
callRootModule( "defaults()" );
|
|
if( realModule() )
|
|
d->kcm->defaults();
|
|
}
|
|
|
|
TQString TDECModuleProxy::quickHelp() const
|
|
{
|
|
|
|
if( !d->rootMode )
|
|
return realModule() ? realModule()->quickHelp() : TQString::null;
|
|
else
|
|
{
|
|
TQByteArray data, replyData;
|
|
TQCString replyType;
|
|
|
|
if (kapp->dcopClient()->call(d->dcopName, d->dcopName, "quickHelp()",
|
|
data, replyType, replyData))
|
|
kdDebug(711) << "Calling DCOP function bool changed() failed." << endl;
|
|
else
|
|
{
|
|
TQDataStream reply(replyData, IO_ReadOnly);
|
|
if (replyType == "TQString")
|
|
{
|
|
TQString result;
|
|
reply >> result;
|
|
return result;
|
|
}
|
|
else
|
|
kdDebug(711) << "DCOP function changed() returned mumbo jumbo." << endl;
|
|
}
|
|
return TQString::null;
|
|
}
|
|
}
|
|
|
|
const TDEAboutData * TDECModuleProxy::aboutData() const
|
|
{
|
|
if( !d->rootMode ) {
|
|
return realModule() ? realModule()->aboutData() : 0;
|
|
}
|
|
else {
|
|
/* This needs fixing, perhaps cache a TDEAboutData copy
|
|
* while in root mode? */
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
TQString TDECModuleProxy::handbookDocPath() const
|
|
{
|
|
if( !d->rootMode ) {
|
|
return realModule() ? realModule()->handbookDocPath() : TQString::null;
|
|
}
|
|
else {
|
|
/* This needs fixing, perhaps cache a handbookSection() copy
|
|
* while in root mode? */
|
|
return TQString::null;
|
|
}
|
|
}
|
|
|
|
TQString TDECModuleProxy::handbookSection() const
|
|
{
|
|
if( !d->rootMode ) {
|
|
return realModule() ? realModule()->handbookSection() : TQString::null;
|
|
}
|
|
else {
|
|
/* This needs fixing, perhaps cache a handbookSection() copy
|
|
* while in root mode? */
|
|
return TQString::null;
|
|
}
|
|
}
|
|
|
|
int TDECModuleProxy::buttons() const
|
|
{
|
|
return realModule() ? realModule()->buttons() :
|
|
TDECModule::Help | TDECModule::Default | TDECModule::Apply ;
|
|
}
|
|
|
|
TQString TDECModuleProxy::rootOnlyMsg() const
|
|
{
|
|
return realModule() ? realModule()->rootOnlyMsg() : TQString::null;
|
|
}
|
|
|
|
bool TDECModuleProxy::useRootOnlyMsg() const
|
|
{
|
|
return realModule() ? realModule()->useRootOnlyMsg() : true;
|
|
}
|
|
|
|
TDEInstance * TDECModuleProxy::instance() const
|
|
{
|
|
return realModule() ? realModule()->instance() : 0;
|
|
}
|
|
|
|
bool TDECModuleProxy::changed() const
|
|
{
|
|
return d->changed;
|
|
}
|
|
|
|
const TDECModuleInfo& TDECModuleProxy::moduleInfo() const
|
|
{
|
|
return d->modInfo;
|
|
}
|
|
|
|
bool TDECModuleProxy::rootMode() const
|
|
{
|
|
return d->rootMode;
|
|
}
|
|
|
|
TQCString TDECModuleProxy::dcopName() const
|
|
{
|
|
return d->dcopName;
|
|
}
|
|
|
|
void TDECModuleProxy::emitQuickHelpChanged()
|
|
{
|
|
emit quickHelpChanged();
|
|
}
|
|
|
|
/***************************************************************/
|
|
#include "tdecmoduleproxy.moc"
|