kfilefiltercombo.cpp
/* This file is part of the KDE libraries
Copyright (C) Stephan Kulow <coolo@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <klocale.h>
#include <kdebug.h>
#include <kstaticdeleter.h>
#include <config-kfile.h>
#include "kfilefiltercombo.h"
class KFileFilterCombo::KFileFilterComboPrivate
{
public:
KFileFilterComboPrivate() {
hasAllSupportedFiles = false;
defaultFilter = i18n("*|All Files");
isMimeFilter = false;
}
// when we have more than 3 mimefilters and no default-filter,
// we don't show the comments of all mimefilters in one line,
// instead we show "All supported files". We have to translate
// that back to the list of mimefilters in currentFilter() tho.
bool hasAllSupportedFiles;
// true when setMimeFilter was called
bool isMimeFilter;
QString lastFilter;
QString defaultFilter;
};
KFileFilterCombo::KFileFilterCombo( QWidget *parent, const char *name)
: KComboBox(true, parent, name), d( new KFileFilterComboPrivate )
{
setTrapReturnKey( true );
setInsertionPolicy(NoInsertion);
connect( this, SIGNAL( activated( int )), this, SIGNAL( filterChanged() ));
connect( this, SIGNAL( returnPressed() ), this, SIGNAL( filterChanged() ));
connect( this, SIGNAL( filterChanged() ), SLOT( slotFilterChanged() ));
m_allTypes = false;
}
KFileFilterCombo::~KFileFilterCombo()
{
delete d;
}
void KFileFilterCombo::setFilter(const QString& filter)
{
clear();
filters.clear();
d->hasAllSupportedFiles = false;
if (!filter.isEmpty()) {
QString tmp = filter;
int index = tmp.find('\n');
while (index > 0) {
filters.append(tmp.left(index));
tmp = tmp.mid(index + 1);
index = tmp.find('\n');
}
filters.append(tmp);
}
else
filters.append( d->defaultFilter );
QStringList::ConstIterator it;
QStringList::ConstIterator end(filters.end());
for (it = filters.begin(); it != end; ++it) {
int tab = (*it).find('|');
insertItem((tab < 0) ? *it :
(*it).mid(tab + 1));
}
d->lastFilter = currentText();
d->isMimeFilter = false;
}
QString KFileFilterCombo::currentFilter() const
{
QString f = currentText();
if (f == text(currentItem())) { // user didn't edit the text
f = *filters.at(currentItem());
if ( d->isMimeFilter || (currentItem() == 0 && d->hasAllSupportedFiles) ) {
return f; // we have a mimetype as filter
}
}
int tab = f.find('|');
if (tab < 0)
return f;
else
return f.left(tab);
}
void KFileFilterCombo::setCurrentFilter( const QString& filter )
{
int pos = 0;
for( QStringList::ConstIterator it = filters.begin();
it != filters.end();
++it, ++pos ) {
if( *it == filter ) {
setCurrentItem( pos );
filterChanged();
return;
}
}
setCurrentText( filter );
filterChanged();
}
void KFileFilterCombo::setMimeFilter( const QStringList& types,
const QString& defaultType )
{
clear();
filters.clear();
QString delim = QString::fromLatin1(", ");
d->hasAllSupportedFiles = false;
m_allTypes = defaultType.isEmpty() && (types.count() > 1);
QString allComments, allTypes;
int i = 0;
for(QStringList::ConstIterator it = types.begin(); it != types.end(); ++it, ++i)
{
if ( m_allTypes && it != types.begin() ) {
allComments += delim;
allTypes += ' ';
}
kdDebug(kfile_area) << *it << endl;
KMimeType::Ptr type = KMimeType::mimeType( *it );
filters.append( type->name() );
if ( m_allTypes )
{
allTypes += type->name();
allComments += type->comment();
}
insertItem( type->comment() );
if ( type->name() == defaultType )
setCurrentItem( i );
}
if ( m_allTypes )
{
if ( i < 3 ) // show the mime-comments of at max 3 types
insertItem( allComments, 0 );
else {
insertItem( i18n("All Supported Files"), 0 );
d->hasAllSupportedFiles = true;
}
filters.prepend( allTypes );
}
d->lastFilter = currentText();
d->isMimeFilter = true;
}
void KFileFilterCombo::slotFilterChanged()
{
d->lastFilter = currentText();
}
bool KFileFilterCombo::eventFilter( QObject *o, QEvent *e )
{
if ( o == lineEdit() && e->type() == QEvent::FocusOut ) {
if ( currentText() != d->lastFilter )
emit filterChanged();
}
return KComboBox::eventFilter( o, e );
}
void KFileFilterCombo::setDefaultFilter( const QString& filter )
{
d->defaultFilter = filter;
}
QString KFileFilterCombo::defaultFilter() const
{
return d->defaultFilter;
}
void KFileFilterCombo::virtual_hook( int id, void* data )
{ KComboBox::virtual_hook( id, data ); }
#include "kfilefiltercombo.moc"
KFileDialog::filterChanged
void filterChanged(const QString &filter)
Emitted when the filter changed, i.e.

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