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