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 "dolphin_searchsettings.h"
  23
  24 #include <nepomuk/filequery.h>
  25 #include <nepomuk/facetwidget.h>
  26 #include <nepomuk/facet.h>
  27 #include <nepomuk/resourcemanager.h>
  28 #include <Nepomuk/Utils/SimpleFacet>
  29 #include <Nepomuk/Utils/ProxyFacet>
  30 #include <Nepomuk/Utils/DynamicResourceFacet>
  31 #include <Nepomuk/Query/FileQuery>
  32 #include <Nepomuk/Query/ResourceTypeTerm>
  33 #include <Nepomuk/Query/LiteralTerm>
  34 #include <Nepomuk/Query/ComparisonTerm>
  35 #include <Nepomuk/Vocabulary/NFO>
  36 #include <Nepomuk/Vocabulary/NMM>
  37 #include <Nepomuk/Vocabulary/NIE>
  38
  39 #include <kfileitem.h>
  40 #include <kio/jobclasses.h>
  41 #include <kio/job.h>
  42 #include <kmenu.h>
  43
  44 #include <QPushButton>
  45 #include <QShowEvent>
  46 #include <QTreeView>
  47 #include <QVBoxLayout>
  48
  49 FilterPanel::FilterPanel(QWidget* parent) :
  50     Panel(parent),
  51     m_initialized(false),
  52     m_nepomukEnabled(false),
  53     m_lastSetUrlStatJob(0),
  54     m_facetWidget(0),
  55     m_unfacetedRestQuery()
  56 {
  57 }
  58
  59 FilterPanel::~FilterPanel()
  60 {
  61 }
  62
  63 bool FilterPanel::urlChanged()
  64 {
  65     if (isVisible() && m_nepomukEnabled) {
  66         setQuery(Nepomuk::Query::Query());
  67
  68         delete m_lastSetUrlStatJob;
  69
  70         m_lastSetUrlStatJob = KIO::stat(url(), KIO::HideProgressInfo);
  71         connect(m_lastSetUrlStatJob, SIGNAL(result(KJob*)),
  72                 this, SLOT(slotSetUrlStatFinished(KJob*)));
  73     }
  74
  75     return true;
  76 }
  77
  78 void FilterPanel::showEvent(QShowEvent* event)
  79 {
  80     if (event->spontaneous()) {
  81         Panel::showEvent(event);
  82         return;
  83     }
  84
  85     if (!m_initialized) {
  86         QVBoxLayout* layout = new QVBoxLayout(this);
  87         layout->setMargin(0);
  88
  89         Q_ASSERT(m_facetWidget == 0);
  90         m_facetWidget = new Nepomuk::Utils::FacetWidget(this);
  91         layout->addWidget(m_facetWidget, 1);
  92
  93         // File Type
  94         m_facetWidget->addFacet(Nepomuk::Utils::Facet::createFileTypeFacet());
  95
  96         // Image Size
  97         Nepomuk::Utils::ProxyFacet* imageSizeProxy = new Nepomuk::Utils::ProxyFacet();
  98         imageSizeProxy->setFacetCondition(Nepomuk::Query::ResourceTypeTerm(Nepomuk::Vocabulary::NFO::Image()));
  99         Nepomuk::Utils::SimpleFacet* imageSizeFacet = new Nepomuk::Utils::SimpleFacet(imageSizeProxy);
 100         imageSizeFacet->setSelectionMode(Nepomuk::Utils::Facet::MatchAny);
 101         imageSizeFacet->addTerm( i18nc("option:check Refers to a filter on image size", "Small"),
 102                                 Nepomuk::Vocabulary::NFO::width() <= Nepomuk::Query::LiteralTerm(300));
 103         imageSizeFacet->addTerm( i18nc("option:check Refers to a filter on image size", "Medium"),
 104                                 (Nepomuk::Vocabulary::NFO::width() > Nepomuk::Query::LiteralTerm(300)) &&
 105                                 (Nepomuk::Vocabulary::NFO::width() <= Nepomuk::Query::LiteralTerm(800)));
 106         imageSizeFacet->addTerm( i18nc("option:check Refers to a filter on image size", "Large"),
 107                                 Nepomuk::Vocabulary::NFO::width() > Nepomuk::Query::LiteralTerm(800));
 108         imageSizeProxy->setSourceFacet(imageSizeFacet);
 109         m_facetWidget->addFacet(imageSizeProxy);
 110
 111         // Artists
 112         Nepomuk::Utils::ProxyFacet* artistProxy = new Nepomuk::Utils::ProxyFacet();
 113         artistProxy->setFacetCondition(Nepomuk::Query::ResourceTypeTerm(Nepomuk::Vocabulary::NFO::Audio()) ||
 114                                        Nepomuk::Query::ComparisonTerm(Nepomuk::Vocabulary::NIE::mimeType(),
 115                                                                       Nepomuk::Query::LiteralTerm(QLatin1String("audio"))));
 116         Nepomuk::Utils::DynamicResourceFacet* artistFacet = new Nepomuk::Utils::DynamicResourceFacet(artistProxy);
 117         artistFacet->setSelectionMode(Nepomuk::Utils::Facet::MatchAny);
 118         artistFacet->setRelation(Nepomuk::Vocabulary::NMM::performer());
 119         artistProxy->setSourceFacet(artistFacet);
 120         m_facetWidget->addFacet(artistProxy);
 121
 122         // Misc
 123         m_facetWidget->addFacet(Nepomuk::Utils::Facet::createDateFacet());
 124         m_facetWidget->addFacet(Nepomuk::Utils::Facet::createRatingFacet());
 125         m_facetWidget->addFacet(Nepomuk::Utils::Facet::createTagFacet());
 126
 127         Q_ASSERT(m_lastSetUrlStatJob == 0);
 128         m_lastSetUrlStatJob = KIO::stat(url(), KIO::HideProgressInfo);
 129         connect(m_lastSetUrlStatJob, SIGNAL(result(KJob*)),
 130                 this, SLOT(slotSetUrlStatFinished(KJob*)));
 131
 132         connect(m_facetWidget, SIGNAL(queryTermChanged(Nepomuk::Query::Term)),
 133                 this, SLOT(slotQueryTermChanged(Nepomuk::Query::Term)));
 134
 135         m_nepomukEnabled = (Nepomuk::ResourceManager::instance()->init() == 0);
 136         m_facetWidget->setEnabled(m_nepomukEnabled);
 137
 138         m_initialized = true;
 139     }
 140
 141     Panel::showEvent(event);
 142 }
 143
 144 void FilterPanel::contextMenuEvent(QContextMenuEvent* event)
 145 {
 146     Panel::contextMenuEvent(event);
 147
 148     QWeakPointer<KMenu> popup = new KMenu(this);
 149     foreach (QAction* action, customContextMenuActions()) {
 150         popup.data()->addAction(action);
 151     }
 152     popup.data()->exec(QCursor::pos());
 153     delete popup.data();
 154 }
 155
 156 void FilterPanel::slotSetUrlStatFinished(KJob* job)
 157 {
 158     m_lastSetUrlStatJob = 0;
 159
 160     const KIO::UDSEntry uds = static_cast<KIO::StatJob*>(job)->statResult();
 161     const QString nepomukQueryStr = uds.stringValue(KIO::UDSEntry::UDS_NEPOMUK_QUERY);
 162     Nepomuk::Query::FileQuery nepomukQuery;
 163     if (!nepomukQueryStr.isEmpty()) {
 164         nepomukQuery = Nepomuk::Query::Query::fromString(nepomukQueryStr);
 165     } else if (url().isLocalFile()) {
 166         // Fallback query for local file URLs: List all files
 167         Nepomuk::Query::ComparisonTerm compTerm(
 168                                 Nepomuk::Vocabulary::NFO::fileName(),
 169                                 Nepomuk::Query::Term());
 170         nepomukQuery.setFileMode(Nepomuk::Query::FileQuery::QueryFiles);
 171         if (SearchSettings::location() == QLatin1String("FromHere")) {
 172             nepomukQuery.addIncludeFolder(url(), true);
 173         }
 174         nepomukQuery.setTerm(compTerm);
 175     }
 176     setQuery(nepomukQuery);
 177 }
 178
 179 void FilterPanel::slotQueryTermChanged(const Nepomuk::Query::Term& term)
 180 {
 181     Nepomuk::Query::FileQuery query(m_unfacetedRestQuery && term);
 182     emit urlActivated(query.toSearchUrl());
 183 }
 184
 185 void FilterPanel::setQuery(const Nepomuk::Query::Query& query)
 186 {
 187     if (query.isValid()) {
 188         const bool block = m_facetWidget->blockSignals(true);
 189
 190         m_unfacetedRestQuery = m_facetWidget->extractFacetsFromQuery(query);
 191         m_facetWidget->setClientQuery(query);
 192         setEnabled(true);
 193
 194         m_facetWidget->blockSignals(block);
 195     } else {
 196         m_unfacetedRestQuery = Nepomuk::Query::Query();
 197         setEnabled(false);
 198     }
 199 }