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 <config-kmetadata.h>
  21
  22 #include "metadatawidget.h"
  23
  24 #include <klocale.h>
  25
  26 #include <QtGui/QLabel>
  27 #include <QtGui/QGridLayout>
  28 #include <QtGui/QTextEdit>
  29
  30 #ifdef HAVE_KMETADATA
  31 #include <kmetadata/kmetadatatagwidget.h>
  32 #include <kmetadata/resourcemanager.h>
  33 #include <kmetadata/resource.h>
  34 #include <kmetadata/variant.h>
  35 #include <kmetadata/kratingwidget.h>
  36 #endif
  37
  38 // FIXME: these should be replaced by using KMetaData::File once it is available again
  39 static const char* s_nfoFile = "http://ont.semanticdesktop.org/2007/03/22/nfo#File";
  40 static const char* s_nfoFileUrl = "http://ont.semanticdesktop.org/2007/03/22/nfo#fileUrl";
  41
  42
  43 bool MetaDataWidget::metaDataAvailable()
  44 {
  45 #ifdef HAVE_KMETADATA
  46     return !Nepomuk::KMetaData::ResourceManager::instance()->init();
  47 #else
  48     return false;
  49 #endif
  50 }
  51
  52
  53 class MetaDataWidget::Private
  54 {
  55 public:
  56 #ifdef HAVE_KMETADATA
  57     void loadComment(const QString& comment)
  58     {
  59         editComment->blockSignals(true);
  60         if (comment.isEmpty()) {
  61             editComment->setFontItalic(true);
  62             editComment->setText(i18n("Click to add comment..."));
  63         } else {
  64             editComment->setFontItalic(false);
  65             editComment->setText(comment);
  66         }
  67         editComment->blockSignals(false);
  68     }
  69
  70     KUrl fileUrl;
  71
  72     Nepomuk::KMetaData::Resource file;
  73
  74     QTextEdit* editComment;
  75     KRatingWidget* ratingWidget;
  76     Nepomuk::KMetaData::TagWidget* tagWidget;
  77 #endif
  78 };
  79
  80
  81 MetaDataWidget::MetaDataWidget(QWidget* parent)
  82         : QWidget(parent)
  83 {
  84 #ifdef HAVE_KMETADATA
  85     d = new Private;
  86     d->editComment = new QTextEdit(this);
  87     d->tagWidget = new Nepomuk::KMetaData::TagWidget(this);
  88     d->ratingWidget = new KRatingWidget(this);
  89     connect(d->ratingWidget, SIGNAL(ratingChanged(int)), this, SLOT(slotRatingChanged(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(i18n("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(i18n("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 #ifdef HAVE_KMETADATA
 122     // FIXME: replace with KMetaData::File once we have it again
 123     d->fileUrl = url;
 124     d->file = Nepomuk::KMetaData::Resource(url.url(), s_nfoFile);
 125     d->ratingWidget->setRating(d->file.rating());
 126     d->tagWidget->setTaggedResource(d->file);
 127     d->loadComment(d->file.description());
 128 #endif
 129 }
 130
 131
 132 void MetaDataWidget::setFiles(const KUrl::List urls)
 133 {
 134 #ifdef HAVE_KMETADATA
 135     // FIXME: support multiple files
 136     setFile( urls.first() );
 137 #endif
 138 }
 139
 140
 141 void MetaDataWidget::slotCommentChanged()
 142 {
 143 #ifdef HAVE_KMETADATA
 144     if ( d->editComment->toPlainText() != d->file.description() ) {
 145 //    d->file.setLocation(url.url());
 146         d->file.setProperty( s_nfoFileUrl, d->fileUrl.url() );
 147         d->file.setDescription(d->editComment->toPlainText());
 148     }
 149 #endif
 150 }
 151
 152
 153 void MetaDataWidget::slotRatingChanged(int r)
 154 {
 155 #ifdef HAVE_KMETADATA
 156     if ( r != d->file.rating() ) {
 157         //    d->file.setLocation(url.url());
 158         d->file.setProperty( s_nfoFileUrl, d->fileUrl.url() );
 159         d->file.setRating(r);
 160     }
 161 #endif
 162 }
 163
 164
 165 bool MetaDataWidget::eventFilter(QObject* obj, QEvent* event)
 166 {
 167 #ifdef HAVE_KMETADATA
 168     if (obj == d->editComment->viewport()
 169             || obj == d->editComment) {
 170         if (event->type() == QEvent::FocusOut) {
 171             // make sure the info text is displayed again
 172             d->loadComment(d->editComment->toPlainText());
 173         } else if (event->type() == QEvent::FocusIn) {
 174             d->editComment->setFontItalic(false);
 175             if (d->file.description().isEmpty())
 176                 d->editComment->setText(QString());
 177         }
 178     }
 179 #endif
 180
 181     return QWidget::eventFilter(obj, event);
 182 }
 183
 184 #include "metadatawidget.moc"