src/metadatawidget.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2007 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 "metadatawidget.h"
  21
  22 #include <config-nepomuk.h>
  23
  24 #include <klocale.h>
  25
  26 #include <QtCore/QEvent>
  27 #include <QtGui/QLabel>
  28 #include <QtGui/QGridLayout>
  29 #include <QtGui/QTextEdit>
  30
  31 #ifdef HAVE_NEPOMUK
  32 #include <nepomuk/kmetadatatagwidget.h>
  33 #include <nepomuk/resourcemanager.h>
  34 #include <nepomuk/resource.h>
  35 #include <nepomuk/variant.h>
  36 #include <nepomuk/kratingwidget.h>
  37 #include <nepomuk/global.h>
  38 #include <Soprano/Vocabulary/Xesam>
  39 #endif
  40
  41
  42 bool MetaDataWidget::metaDataAvailable()
  43 {
  44 #ifdef HAVE_NEPOMUK
  45     return !Nepomuk::ResourceManager::instance()->init();
  46 #else
  47     return false;
  48 #endif
  49 }
  50
  51
  52 class MetaDataWidget::Private
  53 {
  54 public:
  55 #ifdef HAVE_NEPOMUK
  56     void loadComment(const QString& comment);
  57
  58     QMap<KUrl, Nepomuk::Resource> files;
  59
  60     QTextEdit* editComment;
  61     KRatingWidget* ratingWidget;
  62     Nepomuk::TagWidget* tagWidget;
  63 #endif
  64 };
  65
  66 #ifdef HAVE_NEPOMUK
  67 void MetaDataWidget::Private::loadComment(const QString& comment)
  68 {
  69     editComment->blockSignals(true);
  70     if (comment.isEmpty()) {
  71         editComment->setFontItalic(true);
  72         editComment->setText(i18nc("@info:tooltip", "Click to add comment..."));
  73     } else {
  74         editComment->setFontItalic(false);
  75         editComment->setText(comment);
  76     }
  77     editComment->blockSignals(false);
  78 }
  79 #endif
  80
  81
  82 MetaDataWidget::MetaDataWidget(QWidget* parent) :
  83     QWidget(parent)
  84 {
  85 #ifdef HAVE_NEPOMUK
  86     d = new Private;
  87     d->editComment = new QTextEdit(this);
  88     d->ratingWidget = new KRatingWidget(this);
  89     d->tagWidget = new Nepomuk::TagWidget(this);
  90     connect(d->ratingWidget, SIGNAL(ratingChanged(unsigned int)), this, SLOT(slotRatingChanged(unsigned int)));
  91     connect(d->editComment, SIGNAL(textChanged()), this, SLOT(slotCommentChanged()));
  92
  93     QVBoxLayout* lay = new QVBoxLayout(this);
  94     lay->setMargin(0);
  95     QHBoxLayout* hbox = new QHBoxLayout;
  96     hbox->addWidget(new QLabel(i18nc("@label:slider", "Rating:"), this));
  97     hbox->addStretch(1);
  98     hbox->addWidget(d->ratingWidget);
  99     lay->addLayout(hbox);
 100     lay->addWidget(d->editComment);
 101     hbox = new QHBoxLayout;
 102     hbox->addWidget(new QLabel(i18nc("@label:textbox", "Tags:"), this));
 103     hbox->addWidget(d->tagWidget, 1);
 104     lay->addLayout(hbox);
 105
 106     d->editComment->installEventFilter(this);
 107     d->editComment->viewport()->installEventFilter(this);
 108 #else
 109     d = 0;
 110 #endif
 111 }
 112
 113
 114 MetaDataWidget::~MetaDataWidget()
 115 {
 116     delete d;
 117 }
 118
 119
 120 void MetaDataWidget::setFile(const KUrl& url)
 121 {
 122     KUrl::List urls;
 123     urls.append( url );
 124     setFiles( urls );
 125 }
 126
 127
 128 void MetaDataWidget::setFiles(const KUrl::List& urls)
 129 {
 130 #ifdef HAVE_NEPOMUK
 131     // FIXME: replace with KMetaData::File once we have it again
 132     d->files.clear();
 133     bool first = true;
 134     QList<Nepomuk::Resource> fileRes;
 135     Q_FOREACH( KUrl url, urls ) {
 136         Nepomuk::Resource file( url.url(), Soprano::Vocabulary::Xesam::File() );
 137 //    file.setLocation(url.url());
 138         d->files.insert( url, file );
 139         fileRes.append( file );
 140
 141        if ( !first &&
 142             d->ratingWidget->rating() != file.rating() ) {
 143            d->ratingWidget->setRating( 0 ); // reset rating
 144        }
 145        else if ( first ) {
 146            d->ratingWidget->setRating( file.rating() );
 147        }
 148
 149        if ( !first &&
 150             d->editComment->toPlainText() != file.description() ) {
 151            d->loadComment( QString() );
 152        }
 153        else if ( first ) {
 154            d->loadComment( file.description() );
 155        }
 156        first = false;
 157     }
 158     d->tagWidget->setTaggedResources(fileRes);
 159 #endif
 160 }
 161
 162
 163 void MetaDataWidget::slotCommentChanged()
 164 {
 165 #ifdef HAVE_NEPOMUK
 166     for ( QMap<KUrl, Nepomuk::Resource>::iterator it = d->files.begin();
 167           it != d->files.end(); ++it ) {
 168         it.value().setDescription(d->editComment->toPlainText());
 169     }
 170 #endif
 171 }
 172
 173
 174 void MetaDataWidget::slotRatingChanged(unsigned int rating)
 175 {
 176 #ifdef HAVE_NEPOMUK
 177     for ( QMap<KUrl, Nepomuk::Resource>::iterator it = d->files.begin();
 178           it != d->files.end(); ++it ) {
 179         it.value().setRating(rating);
 180     }
 181 #endif
 182 }
 183
 184
 185 bool MetaDataWidget::eventFilter(QObject* obj, QEvent* event)
 186 {
 187 #ifdef HAVE_NEPOMUK
 188     if (obj == d->editComment->viewport() || obj == d->editComment) {
 189         if (event->type() == QEvent::FocusOut) {
 190             // make sure the info text is displayed again
 191             d->loadComment(d->editComment->toPlainText());
 192         } else if (event->type() == QEvent::FocusIn) {
 193             d->editComment->setFontItalic(false);
 194             if (!d->files.isEmpty() && d->files.begin().value().description().isEmpty()) {
 195                 d->editComment->setText(QString());
 196             }
 197         }
 198     }
 199 #endif
 200
 201     return QWidget::eventFilter(obj, event);
 202 }
 203
 204 #include "metadatawidget.moc"