# kio Library API Documentation

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# kfilefiltercombo.cpp

    00001 /* This file is part of the KDE libraries
    00002     Copyright (C) Stephan Kulow <coolo@kde.org>
    00003
    00004     This library is free software; you can redistribute it and/or
    00005     modify it under the terms of the GNU Library General Public
    00006     License as published by the Free Software Foundation; either
    00007     version 2 of the License, or (at your option) any later version.
    00008
    00009     This library is distributed in the hope that it will be useful,
    00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012     Library General Public License for more details.
    00013
    00014     You should have received a copy of the GNU Library General Public License
    00015     along with this library; see the file COPYING.LIB.  If not, write to
    00016     the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00017     Boston, MA 02111-1307, USA.
    00018 */
    00019
    00020 #include <klocale.h>
    00021 #include <kdebug.h>
    00022 #include <kstaticdeleter.h>
    00023 #include <config-kfile.h>
    00024
    00025 #include "kfilefiltercombo.h"
    00026
    00027 class KFileFilterCombo::KFileFilterComboPrivate
    00028 {
    00029 public:
    00030     KFileFilterComboPrivate() {
    00031         hasAllSupportedFiles = false;
    00032         defaultFilter = i18n("*|All Files");
    00033         isMimeFilter = false;
    00034     }
    00035
    00036     // when we have more than 3 mimefilters and no default-filter,
    00037     // we don't show the comments of all mimefilters in one line,
    00038     // instead we show "All supported files". We have to translate
    00039     // that back to the list of mimefilters in currentFilter() tho.
    00040     bool hasAllSupportedFiles;
    00041     // true when setMimeFilter was called
    00042     bool isMimeFilter;
    00043     QString lastFilter;
    00044     QString defaultFilter;
    00045 };
    00046
    00047 KFileFilterCombo::KFileFilterCombo( QWidget *parent, const char *name)
    00048     : KComboBox(true, parent, name), d( new KFileFilterComboPrivate )
    00049 {
    00050     setTrapReturnKey( true );
    00051     setInsertionPolicy(NoInsertion);
    00052     connect( this, SIGNAL( activated( int )), this, SIGNAL( filterChanged() ));
    00053     connect( this, SIGNAL( returnPressed() ), this, SIGNAL( filterChanged() ));
    00054     connect( this, SIGNAL( filterChanged() ), SLOT( slotFilterChanged() ));
    00055     m_allTypes = false;
    00056 }
    00057
    00058 KFileFilterCombo::~KFileFilterCombo()
    00059 {
    00060     delete d;
    00061 }
    00062
    00063 void KFileFilterCombo::setFilter(const QString& filter)
    00064 {
    00065     clear();
    00066     filters.clear();
    00067     d->hasAllSupportedFiles = false;
    00068
    00069     if (!filter.isEmpty()) {
    00070     QString tmp = filter;
    00071     int index = tmp.find('\n');
    00072     while (index > 0) {
    00073         filters.append(tmp.left(index));
    00074         tmp = tmp.mid(index + 1);
    00075         index = tmp.find('\n');
    00076     }
    00077     filters.append(tmp);
    00078     }
    00079     else
    00080     filters.append( d->defaultFilter );
    00081
    00082     QStringList::ConstIterator it;
    00083     for (it = filters.begin(); it != filters.end(); it++) {
    00084     int tab = (*it).find('|');
    00085     insertItem((tab < 0) ? *it :
    00086            (*it).mid(tab + 1));
    00087     }
    00088
    00089     d->lastFilter = currentText();
    00090     d->isMimeFilter = false;
    00091 }
    00092
    00093 QString KFileFilterCombo::currentFilter() const
    00094 {
    00095     QString f = currentText();
    00096     if (f == text(currentItem())) { // user didn't edit the text
    00097     f = *filters.at(currentItem());
    00098         if ( d->isMimeFilter || (currentItem() == 0 && d->hasAllSupportedFiles) ) {
    00099             return f; // we have a mimetype as filter
    00100         }
    00101     }
    00102
    00103     int tab = f.find('|');
    00104     if (tab < 0)
    00105     return f;
    00106     else
    00107     return f.left(tab);
    00108 }
    00109
    00110 void KFileFilterCombo::setCurrentFilter( const QString& filter )
    00111 {
    00112     setCurrentText( filter );
    00113     filterChanged();
    00114 }
    00115
    00116 void KFileFilterCombo::setMimeFilter( const QStringList& types,
    00117                                       const QString& defaultType )
    00118 {
    00119     clear();
    00120     filters.clear();
    00121     QString delim = QString::fromLatin1(", ");
    00122     d->hasAllSupportedFiles = false;
    00123
    00124     m_allTypes = defaultType.isEmpty() && (types.count() > 1);
    00125
    00126     QString allComments, allTypes;
    00127     int i = 0;
    00128     for(QStringList::ConstIterator it = types.begin(); it != types.end(); ++it,  ++i)
    00129     {
    00130         if ( m_allTypes && it != types.begin() ) {
    00131             allComments += delim;
    00132             allTypes += ' ';
    00133         }
    00134
    00135     kdDebug(kfile_area) << *it << endl;
    00136         KMimeType::Ptr type = KMimeType::mimeType( *it );
    00137         filters.append( type->name() );
    00138         if ( m_allTypes )
    00139         {
    00140             allTypes += type->name();
    00141             allComments += type->comment();
    00142         }
    00143         insertItem( type->comment() );
    00144         if ( type->name() == defaultType )
    00145             setCurrentItem( i );
    00146     }
    00147
    00148     if ( m_allTypes )
    00149     {
    00150         if ( i < 3 ) // show the mime-comments of at max 3 types
    00151             insertItem( allComments, 0 );
    00152         else {
    00153             insertItem( i18n("All Supported Files"), 0 );
    00154             d->hasAllSupportedFiles = true;
    00155         }
    00156
    00157         filters.prepend( allTypes );
    00158     }
    00159
    00160     d->lastFilter = currentText();
    00161     d->isMimeFilter = true;
    00162 }
    00163
    00164 void KFileFilterCombo::slotFilterChanged()
    00165 {
    00166     d->lastFilter = currentText();
    00167 }
    00168
    00169 bool KFileFilterCombo::eventFilter( QObject *o, QEvent *e )
    00170 {
    00171     if ( o == lineEdit() && e->type() == QEvent::FocusOut ) {
    00172         if ( currentText() != d->lastFilter )
    00173             emit filterChanged();
    00174     }
    00175
    00176     return KComboBox::eventFilter( o, e );
    00177 }
    00178
    00179 void KFileFilterCombo::setDefaultFilter( const QString& filter )
    00180 {
    00181     d->defaultFilter = filter;
    00182 }
    00183
    00184 QString KFileFilterCombo::defaultFilter() const
    00185 {
    00186     return d->defaultFilter;
    00187 }
    00188
    00189 void KFileFilterCombo::virtual_hook( int id, void* data )
    00190 { KComboBox::virtual_hook( id, data ); }
    00191
    00192 #include "kfilefiltercombo.moc"

This file is part of the documentation for kio Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Sat Jun 11 20:23:57 2005 by doxygen 1.4.1 written by Dimitri van Heesch, © 1997-2003