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 <QtGui/QLabel>
  27 #include <QtGui/QGridLayout>
  28 #include <QtGui/QTextEdit>
  29
  30 #ifdef HAVE_NEPOMUK
  31 #include <nepomuk/kmetadatatagwidget.h>
  32 #include <nepomuk/resourcemanager.h>
  33 #include <nepomuk/resource.h>
  34 #include <nepomuk/variant.h>
  35 #include <nepomuk/kratingwidget.h>
  36 #include <nepomuk/global.h>
  37 #endif
  38
  39
  40 bool MetaDataWidget::metaDataAvailable()
  41 {
  42 #ifdef HAVE_NEPOMUK
  43     return !Nepomuk::ResourceManager::instance()->init();
  44 #else
  45     return false;
  46 #endif
  47 }
  48
  49
  50 class MetaDataWidget::Private
  51 {
  52 public:
  53 #ifdef HAVE_NEPOMUK
  54     void loadComment(const QString& comment);
  55
  56     QMap<KUrl, Nepomuk::Resource> files;
  57
  58     QTextEdit* editComment;
  59     KRatingWidget* ratingWidget;
  60     Nepomuk::TagWidget* tagWidget;
  61 #endif
  62 };
  63
  64 #ifdef HAVE_NEPOMUK
  65 void MetaDataWidget::Private::loadComment(const QString& comment)
  66 {
  67     editComment->blockSignals(true);
  68     if (comment.isEmpty()) {
  69         editComment->setFontItalic(true);
  70         editComment->setText(i18n("Click to add comment..."));
  71     } else {
  72         editComment->setFontItalic(false);
  73         editComment->setText(comment);
  74     }
  75     editComment->blockSignals(false);
  76 }
  77 #endif
  78
  79
  80 MetaDataWidget::MetaDataWidget(QWidget* parent) :
  81     QWidget(parent)
  82 {
  83 #ifdef HAVE_NEPOMUK
  84     d = new Private;
  85     d->editComment = new QTextEdit(this);
  86     d->ratingWidget = new KRatingWidget(this);
  87     d->tagWidget = new Nepomuk::TagWidget(this);
  88     connect(d->ratingWidget, SIGNAL(ratingChanged(unsigned int)), this, SLOT(slotRatingChanged(unsigned int)));
  89     connect(d->editComment, SIGNAL(textChanged()), this, SLOT(slotCommentChanged()));
  90
  91     QVBoxLayout* lay = new QVBoxLayout(this);
  92     lay->setMargin(0);
  93     QHBoxLayout* hbox = new QHBoxLayout;
  94     hbox->addWidget(new QLabel(i18n("Rating:"), this));
  95     hbox->addStretch(1);
  96     hbox->addWidget(d->ratingWidget);
  97     lay->addLayout(hbox);
  98     lay->addWidget(d->editComment);
  99     hbox = new QHBoxLayout;
 100     hbox->addWidget(new QLabel(i18n("Tags:"), this));
 101     hbox->addWidget(d->tagWidget, 1);
 102     lay->addLayout(hbox);
 103
 104     d->editComment->installEventFilter(this);
 105     d->editComment->viewport()->installEventFilter(this);
 106 #else
 107     d = 0;
 108 #endif
 109 }
 110
 111
 112 MetaDataWidget::~MetaDataWidget()
 113 {
 114     delete d;
 115 }
 116
 117
 118 void MetaDataWidget::setFile(const KUrl& url)
 119 {
 120     KUrl::List urls;
 121     urls.append( url );
 122     setFiles( urls );
 123 }
 124
 125
 126 void MetaDataWidget::setFiles(const KUrl::List& urls)
 127 {
 128 #ifdef HAVE_NEPOMUK
 129     // FIXME: replace with KMetaData::File once we have it again
 130     d->files.clear();
 131     bool first = true;
 132     QList<Nepomuk::Resource> fileRes;
 133     Q_FOREACH( KUrl url, urls ) {
 134         Nepomuk::Resource file( url.url(), Nepomuk::NFO::File() );
 135 //    file.setLocation(url.url());
 136         d->files.insert( url, file );
 137         fileRes.append( file );
 138
 139        if ( !first &&
 140             d->ratingWidget->rating() != file.rating() ) {
 141            d->ratingWidget->setRating( 0 ); // reset rating
 142        }
 143        else if ( first ) {
 144            d->ratingWidget->setRating( file.rating() );
 145        }
 146
 147        if ( !first &&
 148             d->editComment->toPlainText() != file.description() ) {
 149            d->loadComment( QString() );
 150        }
 151        else if ( first ) {
 152            d->loadComment( file.description() );
 153        }
 154        first = false;
 155     }
 156     d->tagWidget->setTaggedResources(fileRes);
 157 #endif
 158 }
 159
 160
 161 void MetaDataWidget::slotCommentChanged()
 162 {
 163 #ifdef HAVE_NEPOMUK
 164     for ( QMap<KUrl, Nepomuk::Resource>::iterator it = d->files.begin();
 165           it != d->files.end(); ++it ) {
 166         it.value().setDescription(d->editComment->toPlainText());
 167     }
 168 #endif
 169 }
 170
 171
 172 void MetaDataWidget::slotRatingChanged(unsigned int rating)
 173 {
 174 #ifdef HAVE_NEPOMUK
 175     for ( QMap<KUrl, Nepomuk::Resource>::iterator it = d->files.begin();
 176           it != d->files.end(); ++it ) {
 177         it.value().setRating(rating);
 178     }
 179 #endif
 180 }
 181
 182
 183 bool MetaDataWidget::eventFilter(QObject* obj, QEvent* event)
 184 {
 185 #ifdef HAVE_NEPOMUK
 186     if (obj == d->editComment->viewport() || obj == d->editComment) {
 187         if (event->type() == QEvent::FocusOut) {
 188             // make sure the info text is displayed again
 189             d->loadComment(d->editComment->toPlainText());
 190         } else if (event->type() == QEvent::FocusIn) {
 191             d->editComment->setFontItalic(false);
 192             if (!d->files.isEmpty() && d->files.begin().value().description().isEmpty()) {
 193                 d->editComment->setText(QString());
 194             }
 195         }
 196     }
 197 #endif
 198
 199     return QWidget::eventFilter(obj, event);
 200 }
 201
 202 #include "metadatawidget.moc"