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/* 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 "kfilefiltercombo.h"
#include <kdebug.h>
#include <klocale.h>
#include <kmimetype.h>
#include <config-kfile.h>
#include <QtCore/QEvent>
#include <QtGui/QLineEdit>
class KFileFilterCombo::Private
{
public:
Private( KFileFilterCombo *_parent )
: parent(_parent),
hasAllSupportedFiles(false),
isMimeFilter(false),
defaultFilter(i18n("*|All Files"))
{
}
void _k_slotFilterChanged();
KFileFilterCombo *parent;
// 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;
QStringList m_filters;
bool m_allTypes;
};
KFileFilterCombo::KFileFilterCombo( QWidget *parent)
: KComboBox(true, parent), d( new Private(this) )
{
setTrapReturnKey( true );
setInsertPolicy(QComboBox::NoInsert);
connect( this, SIGNAL(activated(int)), this, SIGNAL(filterChanged()));
connect( this, SIGNAL(returnPressed()), this, SIGNAL(filterChanged()));
connect( this, SIGNAL(filterChanged()), SLOT(_k_slotFilterChanged()));
d->m_allTypes = false;
}
KFileFilterCombo::~KFileFilterCombo()
{
delete d;
}
void KFileFilterCombo::setFilter(const QString& filter)
{
clear();
d->m_filters.clear();
d->hasAllSupportedFiles = false;
if (!filter.isEmpty()) {
QString tmp = filter;
int index = tmp.indexOf('\n');
while (index > 0) {
d->m_filters.append(tmp.left(index));
tmp = tmp.mid(index + 1);
index = tmp.indexOf('\n');
}
d->m_filters.append(tmp);
}
else
d->m_filters.append( d->defaultFilter );
QStringList::ConstIterator it;
QStringList::ConstIterator end(d->m_filters.constEnd());
for (it = d->m_filters.constBegin(); it != end; ++it) {
int tab = (*it).indexOf('|');
addItem((tab < 0) ? *it :
(*it).mid(tab + 1));
}
d->lastFilter = currentText();
d->isMimeFilter = false;
}
QString KFileFilterCombo::currentFilter() const
{
QString f = currentText();
if (f == itemText(currentIndex())) { // user didn't edit the text
f = d->m_filters.value(currentIndex());
if ( d->isMimeFilter || (currentIndex() == 0 && d->hasAllSupportedFiles) ) {
return f; // we have a mimetype as filter
}
}
int tab = f.indexOf('|');
if (tab < 0)
return f;
else
return f.left(tab);
}
bool KFileFilterCombo::showsAllTypes() const
{
return d->m_allTypes;
}
QStringList KFileFilterCombo::filters() const
{
return d->m_filters;
}
void KFileFilterCombo::setCurrentFilter( const QString& filter )
{
setCurrentIndex(d->m_filters.indexOf(filter));
filterChanged();
}
void KFileFilterCombo::setMimeFilter( const QStringList& types,
const QString& defaultType )
{
clear();
d->m_filters.clear();
QString delim = QLatin1String(", ");
d->hasAllSupportedFiles = false;
bool hasAllFilesFilter = false;
d->m_allTypes = defaultType.isEmpty() && (types.count() > 1);
QString allComments, allTypes;
for(QStringList::ConstIterator it = types.begin(); it != types.end(); ++it)
{
kDebug(kfile_area) << *it;
KMimeType::Ptr type = KMimeType::mimeType( *it );
if (!type) {
kDebug(kfile_area) << "Could not create mimetype!\n";
continue;
}
if ( type->name().startsWith( QLatin1String( "all/" ) ) ) {
hasAllFilesFilter = true;
continue;
}
if ( d->m_allTypes && it != types.begin() ) {
allComments += delim;
allTypes += ' ';
}
d->m_filters.append( type->name() );
if ( d->m_allTypes )
{
allTypes += type->name();
allComments += type->comment();
}
addItem( type->comment() );
if ( type->name() == defaultType )
setCurrentIndex( count() - 1 );
}
if ( d->m_allTypes )
{
if ( count() <= 3 ) // show the mime-comments of at max 3 types
insertItem(0, allComments);
else {
insertItem(0, i18n("All Supported Files"));
d->hasAllSupportedFiles = true;
}
setCurrentIndex( 0 );
d->m_filters.prepend( allTypes );
}
if ( hasAllFilesFilter ) {
addItem(i18n("All Files"));
d->m_filters.append( QLatin1String("all/allfiles") );
}
d->lastFilter = currentText();
d->isMimeFilter = true;
}
void KFileFilterCombo::Private::_k_slotFilterChanged()
{
lastFilter = parent->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;
}
bool KFileFilterCombo::isMimeFilter() const
{
return d->isMimeFilter;
}
#include "kfilefiltercombo.moc"
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