src/panels/information/kloadmetadatathread.cpp

   1 /*****************************************************************************
   2  * Copyright (C) 2009 by Peter Penz <peter.penz@gmx.at>                      *
   3  * Copyright (C) 2009 by Sebastian Trueg <trueg@kde.org>                     *
   4  *                                                                           *
   5  * This library is free software; you can redistribute it and/or             *
   6  * modify it under the terms of the GNU Library General Public               *
   7  * License version 2 as published by the Free Software Foundation.           *
   8  *                                                                           *
   9  * This library 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 GNU         *
  12  * Library General Public License for more details.                          *
  13  *                                                                           *
  14  * You should have received a copy of the GNU Library General Public License *
  15  * along with this library; see the file COPYING.LIB.  If not, write to      *
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,      *
  17  * Boston, MA 02110-1301, USA.                                               *
  18  *****************************************************************************/
  19
  20 #include "kloadmetadatathread_p.h"
  21
  22 #include <kconfig.h>
  23 #include <kconfiggroup.h>
  24 #include <kglobal.h>
  25 #include <klocale.h>
  26
  27 #include <nepomuk/resource.h>
  28
  29 KLoadMetaDataThread::KLoadMetaDataThread() :
  30     m_rating(0),
  31     m_comment(),
  32     m_tags(),
  33     m_items(),
  34     m_files(),
  35     m_urls(),
  36     m_canceled(false)
  37 {
  38 }
  39
  40 KLoadMetaDataThread::~KLoadMetaDataThread()
  41 {
  42 }
  43
  44 void KLoadMetaDataThread::load(const KUrl::List& urls)
  45 {
  46     m_urls = urls;
  47     m_canceled = false;
  48     start();
  49 }
  50
  51 void KLoadMetaDataThread::cancelAndDelete()
  52 {
  53     connect(this, SIGNAL(finished()), this, SLOT(slotFinished()));
  54     m_canceled = true;
  55     // Setting m_canceled to true will cancel KLoadMetaDataThread::run()
  56     // as soon as possible. Afterwards the thread will delete itself
  57     // asynchronously inside slotFinished().
  58 }
  59
  60 void KLoadMetaDataThread::run()
  61 {
  62     KConfig config("kmetainformationrc", KConfig::NoGlobals);
  63     KConfigGroup settings = config.group("Show");
  64
  65     bool first = true;
  66     unsigned int rating = 0;
  67     foreach (const KUrl& url, m_urls) {
  68         if (m_canceled) {
  69             return;
  70         }
  71
  72         Nepomuk::Resource file(url);
  73         m_files.insert(url, file);
  74
  75         if (!first && (rating != file.rating())) {
  76             rating = 0; // reset rating
  77         } else if (first) {
  78             rating = file.rating();
  79         }
  80
  81         if (!first && (m_comment != file.description())) {
  82             m_comment.clear(); // reset comment
  83         } else if (first) {
  84             m_comment = file.description();
  85         }
  86
  87         if (!first && (m_tags != file.tags())) {
  88             m_tags.clear(); // reset tags
  89         } else if (first) {
  90             m_tags = file.tags();
  91         }
  92
  93         if (first && (m_urls.count() == 1)) {
  94             // TODO: show shared meta information instead
  95             // of not showing anything on multiple selections
  96             QHash<QUrl, Nepomuk::Variant> variants = file.properties();
  97             QHash<QUrl, Nepomuk::Variant>::const_iterator it = variants.constBegin();
  98             while (it != variants.constEnd()) {
  99                 Nepomuk::Types::Property prop(it.key());
 100                 if (settings.readEntry(prop.name(), true)) {
 101                     Item item;
 102                     item.name = prop.name();
 103                     item.label = tunedLabel(prop.label());
 104                     item.value = formatValue(it.value());
 105                     m_items.append(item);
 106                 }
 107                 ++it;
 108             }
 109         }
 110
 111         first = false;
 112     }
 113 }
 114
 115 int KLoadMetaDataThread::rating() const
 116 {
 117     return m_rating;
 118 }
 119
 120 QString KLoadMetaDataThread::comment() const
 121 {
 122     return m_comment;
 123 }
 124
 125 QList<Nepomuk::Tag> KLoadMetaDataThread::tags() const
 126 {
 127     return m_tags;
 128 }
 129
 130 QList<KLoadMetaDataThread::Item> KLoadMetaDataThread::items() const
 131 {
 132     return m_items;
 133 }
 134
 135 QMap<KUrl, Nepomuk::Resource> KLoadMetaDataThread::files() const
 136 {
 137     return m_files;
 138 }
 139
 140 void KLoadMetaDataThread::slotFinished()
 141 {
 142     deleteLater();
 143 }
 144
 145 QString  KLoadMetaDataThread::tunedLabel(const QString& label) const
 146 {
 147     QString tunedLabel;
 148     const int labelLength = label.length();
 149     if (labelLength > 0) {
 150         tunedLabel.reserve(labelLength);
 151         tunedLabel = label[0].toUpper();
 152         for (int i = 1; i < labelLength; ++i) {
 153             if (label[i].isUpper() && !label[i - 1].isSpace() && !label[i - 1].isUpper()) {
 154                 tunedLabel += ' ';
 155                 tunedLabel += label[i].toLower();
 156             } else {
 157                 tunedLabel += label[i];
 158             }
 159         }
 160     }
 161     return tunedLabel + ':';
 162 }
 163
 164 QString  KLoadMetaDataThread::formatValue(const Nepomuk::Variant& value)
 165 {
 166     if (value.isDateTime()) {
 167         return KGlobal::locale()->formatDateTime(value.toDateTime(), KLocale::FancyLongDate);
 168     } else if (value.isResource()) {
 169         return value.toResource().genericLabel();
 170     } else if (value.isResourceList()) {
 171         QStringList list;
 172         foreach(const Nepomuk::Resource& res, value.toResourceList()) {
 173             list << res.genericLabel();
 174         }
 175         return list.join(QLatin1String(";\n"));
 176     } else {
 177         return value.toString();
 178     }
 179 }
 180
 181 #include "kloadmetadatathread_p.moc"