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 #include <kdebug.h>
  27 #include <kprotocolinfo.h>
  28
  29 #include <nepomuk/resource.h>
  30
  31 KLoadMetaDataThread::KLoadMetaDataThread() :
  32     m_rating(0),
  33     m_comment(),
  34     m_tags(),
  35     m_items(),
  36     m_files(),
  37     m_urls(),
  38     m_canceled(false)
  39 {
  40 }
  41
  42 KLoadMetaDataThread::~KLoadMetaDataThread()
  43 {
  44 }
  45
  46 void KLoadMetaDataThread::load(const KUrl::List& urls)
  47 {
  48     m_urls = urls;
  49     m_canceled = false;
  50     start();
  51 }
  52
  53 void KLoadMetaDataThread::cancelAndDelete()
  54 {
  55     connect(this, SIGNAL(finished()), this, SLOT(slotFinished()));
  56     m_canceled = true;
  57     // Setting m_canceled to true will cancel KLoadMetaDataThread::run()
  58     // as soon as possible. Afterwards the thread will delete itself
  59     // asynchronously inside slotFinished().
  60 }
  61
  62 void KLoadMetaDataThread::run()
  63 {
  64     KConfig config("kmetainformationrc", KConfig::NoGlobals);
  65     KConfigGroup settings = config.group("Show");
  66
  67     bool first = true;
  68     foreach (const KUrl& url, m_urls) {
  69         if (m_canceled) {
  70             return;
  71         }
  72
  73         Nepomuk::Resource file(url);
  74         if (!file.isValid()) {
  75             continue;
  76         }
  77
  78         m_files.insert(url, file);
  79
  80         if (!first && (m_rating != file.rating())) {
  81             m_rating = 0; // reset rating
  82         } else if (first) {
  83             m_rating = file.rating();
  84         }
  85
  86         if (!first && (m_comment != file.description())) {
  87             m_comment.clear(); // reset comment
  88         } else if (first) {
  89             m_comment = file.description();
  90         }
  91
  92         if (!first && (m_tags != file.tags())) {
  93             m_tags.clear(); // reset tags
  94         } else if (first) {
  95             m_tags = file.tags();
  96         }
  97
  98         if (first && (m_urls.count() == 1)) {
  99             // TODO: show shared meta information instead
 100             // of not showing anything on multiple selections
 101             QHash<QUrl, Nepomuk::Variant> variants = file.properties();
 102             QHash<QUrl, Nepomuk::Variant>::const_iterator it = variants.constBegin();
 103             while (it != variants.constEnd()) {
 104                 Nepomuk::Types::Property prop(it.key());
 105                 if (settings.readEntry(prop.name(), true)) {
 106                     Item item;
 107                     item.name = prop.name();
 108                     item.label = tunedLabel(prop.label());
 109                     item.value = formatValue(it.value());
 110                     m_items.append(item);
 111                 }
 112                 ++it;
 113             }
 114         }
 115
 116         first = false;
 117     }
 118 }
 119
 120 int KLoadMetaDataThread::rating() const
 121 {
 122     return m_rating;
 123 }
 124
 125 QString KLoadMetaDataThread::comment() const
 126 {
 127     return m_comment;
 128 }
 129
 130 QList<Nepomuk::Tag> KLoadMetaDataThread::tags() const
 131 {
 132     return m_tags;
 133 }
 134
 135 QList<KLoadMetaDataThread::Item> KLoadMetaDataThread::items() const
 136 {
 137     return m_items;
 138 }
 139
 140 QMap<KUrl, Nepomuk::Resource> KLoadMetaDataThread::files() const
 141 {
 142     return m_files;
 143 }
 144
 145 void KLoadMetaDataThread::slotFinished()
 146 {
 147     deleteLater();
 148 }
 149
 150 QString  KLoadMetaDataThread::tunedLabel(const QString& label) const
 151 {
 152     QString tunedLabel;
 153     const int labelLength = label.length();
 154     if (labelLength > 0) {
 155         tunedLabel.reserve(labelLength);
 156         tunedLabel = label[0].toUpper();
 157         for (int i = 1; i < labelLength; ++i) {
 158             if (label[i].isUpper() && !label[i - 1].isSpace() && !label[i - 1].isUpper()) {
 159                 tunedLabel += ' ';
 160                 tunedLabel += label[i].toLower();
 161             } else {
 162                 tunedLabel += label[i];
 163             }
 164         }
 165     }
 166     return tunedLabel + ':';
 167 }
 168
 169 QString  KLoadMetaDataThread::formatValue(const Nepomuk::Variant& value)
 170 {
 171     if (value.isDateTime()) {
 172         return KGlobal::locale()->formatDateTime(value.toDateTime(), KLocale::FancyLongDate);
 173     }
 174
 175     if (value.isResource() || value.isResourceList()) {
 176         QStringList links;
 177         foreach(const Nepomuk::Resource& res, value.toResourceList()) {
 178             if (KProtocolInfo::isKnownProtocol(res.resourceUri())) {
 179                 links << QString::fromLatin1("<a href=\"%1\">%2</a>")
 180                          .arg(KUrl(res.resourceUri()).url())
 181                          .arg(res.genericLabel());
 182             } else {
 183                 links << res.genericLabel();
 184             }
 185         }
 186         return links.join(QLatin1String(";\n"));
 187     }
 188
 189     return value.toString();
 190 }
 191
 192 #include "kloadmetadatathread_p.moc"