src/panels/filter/filterpanel.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2010 by Sebastian Trueg <trueg@kde.org>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "filterpanel.h"
  21
  22 #include <nepomuk/filequery.h>
  23 #include <nepomuk/facetwidget.h>
  24 #include <Nepomuk/Query/FileQuery>
  25 #include <Nepomuk/Query/Term>
  26
  27 #include <kfileitem.h>
  28 #include <kio/jobclasses.h>
  29 #include <kio/job.h>
  30
  31 #include <QtGui/QVBoxLayout>
  32 #include <QtGui/QTreeView>
  33 #include <QtGui/QPushButton>
  34 #include <kdebug.h>
  35
  36
  37 FilterPanel::FilterPanel(QWidget* parent)
  38     : Panel(parent)
  39 {
  40     QVBoxLayout* layout = new QVBoxLayout(this);
  41     m_buttonRemoveFolderRestriction = new QPushButton( i18n( "Remove folder restriction" ), this );
  42     connect( m_buttonRemoveFolderRestriction, SIGNAL( clicked() ), SLOT( slotRemoveFolderRestrictionClicked() ) );
  43
  44     layout->addWidget(m_buttonRemoveFolderRestriction);
  45
  46     m_facetWidget = new Nepomuk::Utils::FacetWidget( this );
  47     layout->addWidget( m_facetWidget, 1 );
  48     connect(m_facetWidget, SIGNAL(facetsChanged()), this, SLOT(slotFacetsChanged()) );
  49
  50     // init to empty panel
  51     setQuery(Nepomuk::Query::Query());
  52 }
  53
  54
  55 FilterPanel::~FilterPanel()
  56 {
  57 }
  58
  59 void FilterPanel::setUrl(const KUrl& url)
  60 {
  61     kDebug() << url;
  62     Panel::setUrl(url);
  63
  64     // disable us
  65     setQuery(Nepomuk::Query::Query());
  66
  67     // get the query from the item
  68     m_lastSetUrlStatJob = KIO::stat(url, KIO::HideProgressInfo);
  69     connect(m_lastSetUrlStatJob, SIGNAL(result(KJob*)),
  70             this, SLOT(slotSetUrlStatFinished(KJob*)));
  71 }
  72
  73
  74 void FilterPanel::setQuery(const Nepomuk::Query::Query& query)
  75 {
  76     kDebug() << query << query.isValid() << query.toSparqlQuery();
  77
  78     if (query.isValid()) {
  79         m_buttonRemoveFolderRestriction->setVisible( query.isFileQuery() && !query.toFileQuery().includeFolders().isEmpty() );
  80         m_unfacetedRestQuery = query;
  81         m_unfacetedRestQuery.setTerm( m_facetWidget->extractFacetsFromTerm( query.term() ) );
  82         m_facetWidget->setClientQuery( query );
  83         kDebug() << "Rest query after facets:" << m_unfacetedRestQuery;
  84         setEnabled(true);
  85     }
  86     else {
  87         m_unfacetedRestQuery = Nepomuk::Query::Query();
  88         setEnabled(false);
  89     }
  90 }
  91
  92
  93 void FilterPanel::slotSetUrlStatFinished(KJob* job)
  94 {
  95     m_lastSetUrlStatJob = 0;
  96     kDebug() << url();
  97     const KIO::UDSEntry uds = static_cast<KIO::StatJob*>(job)->statResult();
  98     const QString nepomukQueryStr = uds.stringValue( KIO::UDSEntry::UDS_NEPOMUK_QUERY );
  99     kDebug() << nepomukQueryStr;
 100     Nepomuk::Query::FileQuery nepomukQuery;
 101     if ( !nepomukQueryStr.isEmpty() ) {
 102         nepomukQuery = Nepomuk::Query::Query::fromString( nepomukQueryStr );
 103     }
 104     else if ( url().isLocalFile() ) {
 105         // fallback query for local file URLs
 106         nepomukQuery.addIncludeFolder(url(), false);
 107     }
 108     kDebug() << nepomukQuery;
 109     setQuery(nepomukQuery);
 110 }
 111
 112
 113 void FilterPanel::slotFacetsChanged()
 114 {
 115     Nepomuk::Query::Query query( m_unfacetedRestQuery && m_facetWidget->queryTerm() );
 116     kDebug() << query;
 117     emit urlActivated( query.toSearchUrl() );
 118 }
 119
 120
 121 void FilterPanel::slotRemoveFolderRestrictionClicked()
 122 {
 123     Nepomuk::Query::FileQuery query( m_unfacetedRestQuery && m_facetWidget->queryTerm() );
 124     query.setIncludeFolders( KUrl::List() );
 125     query.setExcludeFolders( KUrl::List() );
 126     m_facetWidget->setClientQuery( query );
 127     emit urlActivated( query.toSearchUrl() );
 128 }