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tdeedu/kmplot/kmplot/kparametereditor.cpp

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/*
* KmPlot - a math. function plotter for the KDE-Desktop
*
* Copyright (C) 2004 Fredrik Edemar
* f_edemar@linux.se
*
* This file is part of the KDE Project.
* KmPlot is part of the KDE-EDU Project.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <kdebug.h>
#include <tdefiledialog.h>
#include <kinputdialog.h>
#include <tdeio/netaccess.h>
#include <tdelistbox.h>
#include <tdelocale.h>
#include <tdemessagebox.h>
#include <kpushbutton.h>
#include <tdetempfile.h>
#include <kurl.h>
#include <tqfile.h>
#include <tqtextstream.h>
#include <tqvaluelist.h>
#include "kparametereditor.h"
class ParameterValueList;
KParameterEditor::KParameterEditor(XParser *m, TQValueList<ParameterValueItem> *l, TQWidget *parent, const char *name)
: QParameterEditor(parent,name, true, TQt::WDestructiveClose), m_parameter(l), m_parser(m)
{
for ( TQValueList<ParameterValueItem>::Iterator it = m_parameter->begin(); it != m_parameter->end(); ++it )
list->insertItem( (*it).expression );
list->sort();
connect( cmdNew, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdNew_clicked() ));
connect( cmdEdit, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdEdit_clicked() ));
connect( cmdDelete, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdDelete_clicked() ));
connect( cmdImport, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdImport_clicked() ));
connect( cmdExport, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdExport_clicked() ));
connect( cmdClose, TQT_SIGNAL( clicked() ), this, TQT_SLOT( close() ));
connect( list, TQT_SIGNAL( doubleClicked( TQListBoxItem * ) ), this, TQT_SLOT( varlist_doubleClicked( TQListBoxItem *) ));
connect( list, TQT_SIGNAL( clicked ( TQListBoxItem * ) ), this, TQT_SLOT( varlist_clicked(TQListBoxItem * ) ));
}
KParameterEditor::~KParameterEditor()
{
m_parameter->clear();
TQString item_text;
for (int i = 0; (uint)i <= list->count();i++)
{
item_text = list->text(i);
if ( !item_text.isEmpty() )
m_parameter->append( ParameterValueItem(item_text, m_parser->eval( item_text)) );
}
}
void KParameterEditor::cmdNew_clicked()
{
TQString result="";
while (1)
{
bool ok;
result = KInputDialog::getText( i18n("Parameter Value"), i18n( "Enter a new parameter value:" ), result, &ok );
if ( !ok)
return;
m_parser->eval( result );
if ( m_parser->parserError(false) != 0 )
{
m_parser->parserError();
continue;
}
if ( checkTwoOfIt(result) )
{
KMessageBox::error(0,i18n("The value %1 already exists and will therefore not be added.").arg(result));
continue;
}
list->insertItem(result);
list->sort();
break;
}
}
void KParameterEditor::cmdEdit_clicked()
{
TQString result=list->currentText();
while (1)
{
bool ok;
result = KInputDialog::getText( i18n("Parameter Value"), i18n( "Enter a new parameter value:" ), result, &ok );
if ( !ok)
return;
m_parser->eval(result);
if ( m_parser->parserError(false) != 0)
{
m_parser->parserError();
continue;
}
if ( checkTwoOfIt(result) )
{
if( result != list->currentText() )
KMessageBox::error(0,i18n("The value %1 already exists.").arg(result));
continue;
}
list->removeItem( list->currentItem());
list->insertItem(result);
list->sort();
break;
}
}
void KParameterEditor::cmdDelete_clicked()
{
list->removeItem( list->currentItem());
list->sort();
}
void KParameterEditor::cmdImport_clicked()
{
KURL url = KFileDialog::getOpenURL( TQString(),i18n("*.txt|Plain Text File "));
if ( url.isEmpty() )
return;
if (!TDEIO::NetAccess::exists(url,true,this) )
{
KMessageBox::error(0,i18n("The file does not exist."));
return;
}
bool verbose = false;
TQFile file;
TQString tmpfile;
if ( !url.isLocalFile() )
{
if ( !TDEIO::NetAccess::download(url, tmpfile, this) )
{
KMessageBox::error(0,i18n("An error appeared when opening this file"));
return;
}
file.setName(tmpfile);
}
else
file.setName(url.prettyURL(0,KURL::StripFileProtocol) );
if ( file.open(IO_ReadOnly) )
{
TQTextStream stream(&file);
TQString line;
for( int i=1; !stream.atEnd();i++ )
{
line = stream.readLine();
if (line.isEmpty())
continue;
m_parser->eval( line );
if ( m_parser->parserError(false) == 0)
{
if ( !checkTwoOfIt(line) )
{
list->insertItem(line);
list->sort();
}
}
else if ( !verbose)
{
if ( KMessageBox::warningContinueCancel(this,i18n("Line %1 is not a valid parameter value and will therefore not be included. Do you want to continue?").arg(i) ) == KMessageBox::Cancel)
{
file.close();
TDEIO::NetAccess::removeTempFile( tmpfile );
return;
}
else if (KMessageBox::warningYesNo(this,i18n("Would you like to be informed about other lines that cannot be read?"), TQString(), i18n("Get Informed"), i18n("Ignore Information") ) == KMessageBox::No)
verbose = true;
}
}
file.close();
}
else
KMessageBox::error(0,i18n("An error appeared when opening this file"));
if ( !url.isLocalFile() )
TDEIO::NetAccess::removeTempFile( tmpfile );
}
void KParameterEditor::cmdExport_clicked()
{
if ( !list->count() )
return;
KURL url = KFileDialog::getSaveURL( TQString(),i18n("*.txt|Plain Text File "));
if ( url.isEmpty() )
return;
if( !TDEIO::NetAccess::exists( url,false,this ) || KMessageBox::warningContinueCancel( this, i18n( "A file named \"%1\" already exists. Are you sure you want to continue and overwrite this file?" ).arg( url.url()), i18n( "Overwrite File?" ), KGuiItem( i18n( "&Overwrite" ) ) ) == KMessageBox::Continue )
{
TQString tmpfile;
TQFile file;
if ( !url.isLocalFile() )
{
KTempFile tmpfile;
file.setName(tmpfile.name() );
if (file.open( IO_WriteOnly ) )
{
TQTextStream stream(&file);
TQListBoxItem *it = list->firstItem();
while ( 1 )
{
stream << it->text();
it = it->next();
if (it)
stream << endl; //only write a new line if there are more text
else
break;
}
file.close();
}
else
KMessageBox::error(0,i18n("An error appeared when saving this file"));
if ( !TDEIO::NetAccess::upload(tmpfile.name(),url, this) )
{
KMessageBox::error(0,i18n("An error appeared when saving this file"));
tmpfile.unlink();
return;
}
tmpfile.unlink();
}
else
{
file.setName(url.prettyURL(0,KURL::StripFileProtocol));
if (file.open( IO_WriteOnly ) )
{
TQTextStream stream(&file);
TQListBoxItem *it = list->firstItem();
while ( 1 )
{
stream << it->text();
it = it->next();
if (it)
stream << endl; //only write a new line if there are more text
else
break;
}
file.close();
}
else
KMessageBox::error(0,i18n("An error appeared when saving this file"));
}
}
}
void KParameterEditor::varlist_clicked( TQListBoxItem * item )
{
if (item)
{
cmdEdit->setEnabled(true);
cmdDelete->setEnabled(true);
}
else
{
cmdEdit->setEnabled(false);
cmdDelete->setEnabled(false);
}
}
void KParameterEditor::varlist_doubleClicked( TQListBoxItem * )
{
cmdEdit_clicked();
}
bool KParameterEditor::checkTwoOfIt(const TQString & text)
{
if ( list->findItem(text,TQt::ExactMatch) == 0)
return false;
else
return true;
}
#include "kparametereditor.moc"
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