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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     }
    00034
    00035     // when we have more than 3 mimefilters and no default-filter,
    00036     // we don't show the comments of all mimefilters in one line,
    00037     // instead we show "All supported files". We have to translate
    00038     // that back to the list of mimefilters in currentFilter() tho.
    00039     bool hasAllSupportedFiles;
    00040     QString lastFilter;
    00041     QString defaultFilter;
    00042 };
    00043
    00044 KFileFilterCombo::KFileFilterCombo( QWidget *parent, const char *name)
    00045     : KComboBox(true, parent, name), d( new KFileFilterComboPrivate )
    00046 {
    00047     setTrapReturnKey( true );
    00048     setInsertionPolicy(NoInsertion);
    00049     connect( this, SIGNAL( activated( int )), this, SIGNAL( filterChanged() ));
    00050     connect( this, SIGNAL( returnPressed() ), this, SIGNAL( filterChanged() ));
    00051     connect( this, SIGNAL( filterChanged() ), SLOT( slotFilterChanged() ));
    00052     m_allTypes = false;
    00053 }
    00054
    00055 KFileFilterCombo::~KFileFilterCombo()
    00056 {
    00057     delete d;
    00058 }
    00059
    00060 void KFileFilterCombo::setFilter(const QString& filter)
    00061 {
    00062     clear();
    00063     filters.clear();
    00064     d->hasAllSupportedFiles = false;
    00065
    00066     if (!filter.isEmpty()) {
    00067         QString tmp = filter;
    00068         int index = tmp.find('\n');
    00069         while (index > 0) {
    00070             filters.append(tmp.left(index));
    00071             tmp = tmp.mid(index + 1);
    00072             index = tmp.find('\n');
    00073         }
    00074         filters.append(tmp);
    00075     }
    00076     else
    00077         filters.append( d->defaultFilter );
    00078
    00079     QStringList::ConstIterator it;
    00080     for (it = filters.begin(); it != filters.end(); it++) {
    00081         int tab = (*it).find('|');
    00082         insertItem((tab < 0) ? *it :
    00083                    (*it).mid(tab + 1));
    00084     }
    00085
    00086     d->lastFilter = currentText();
    00087 }
    00088
    00089 QString KFileFilterCombo::currentFilter() const
    00090 {
    00091     QString f = currentText();
    00092     if (f == text(currentItem())) { // user didn't edit the text
    00093         f = *filters.at(currentItem());
    00094         int mime = f.contains( '/' );
    00095         if ( mime > 0 || (currentItem() == 0 && d->hasAllSupportedFiles) ) {
    00096             return f; // we have a mimetype as filter
    00097         }
    00098     }
    00099
    00100     int tab = f.find('|');
    00101     if (tab < 0)
    00102         return f;
    00103     else
    00104         return f.left(tab);
    00105 }
    00106
    00107 void KFileFilterCombo::setMimeFilter( const QStringList& types,
    00108                                       const QString& defaultType )
    00109 {
    00110     clear();
    00111     filters.clear();
    00112     QString delim = QString::fromLatin1(", ");
    00113     d->hasAllSupportedFiles = false;
    00114
    00115     m_allTypes = defaultType.isEmpty() && (types.count() > 1);
    00116
    00117     QString allComments, allTypes;
    00118     int i = 0;
    00119     for(QStringList::ConstIterator it = types.begin(); it != types.end(); ++it,  ++i)
    00120     {
    00121         if ( m_allTypes && it != types.begin() ) {
    00122             allComments += delim;
    00123             allTypes += ' ';
    00124         }
    00125
    00126         kdDebug(kfile_area) << *it << endl;
    00127         KMimeType::Ptr type = KMimeType::mimeType( *it );
    00128         filters.append( type->name() );
    00129         if ( m_allTypes )
    00130         {
    00131             allTypes += type->name();
    00132             allComments += type->comment();
    00133         }
    00134         insertItem( type->comment() );
    00135         if ( type->name() == defaultType )
    00136             setCurrentItem( i );
    00137     }
    00138
    00139     if ( m_allTypes )
    00140     {
    00141         if ( i < 3 ) // show the mime-comments of at max 3 types
    00142             insertItem( allComments, 0 );
    00143         else {
    00144             insertItem( i18n("All supported files"), 0 );
    00145             d->hasAllSupportedFiles = true;
    00146         }
    00147
    00148         filters.prepend( allTypes );
    00149     }
    00150
    00151     d->lastFilter = currentText();
    00152 }
    00153
    00154 void KFileFilterCombo::slotFilterChanged()
    00155 {
    00156     d->lastFilter = currentText();
    00157 }
    00158
    00159 bool KFileFilterCombo::eventFilter( QObject *o, QEvent *e )
    00160 {
    00161     if ( o == lineEdit() && e->type() == QEvent::FocusOut ) {
    00162         if ( currentText() != d->lastFilter )
    00163             emit filterChanged();
    00164     }
    00165
    00166     return KComboBox::eventFilter( o, e );
    00167 }
    00168
    00169 void KFileFilterCombo::setDefaultFilter( const QString& filter )
    00170 {
    00171     d->defaultFilter = filter;
    00172 }
    00173
    00174 QString KFileFilterCombo::defaultFilter() const
    00175 {
    00176     return d->defaultFilter;
    00177 }
    00178
    00179 void KFileFilterCombo::virtual_hook( int id, void* data )
    00180 { KComboBox::virtual_hook( id, data ); }
    00181
    00182 #include "kfilefiltercombo.moc"

This file is part of the documentation for kdelibs Version 3.1.5.
Documentation copyright © 1996-2002 the KDE developers.
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