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-kmetadata.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     KUrl fileUrl;
  60
  61     Nepomuk::KMetaData::Resource file;
  62
  63     QTextEdit* editComment;
  64     KRatingWidget* ratingWidget;
  65     Nepomuk::KMetaData::TagWidget* tagWidget;
  66 #endif
  67 };
  68
  69 void MetaDataWidget::Private::loadComment(const QString& comment)
  70 {
  71     editComment->blockSignals(true);
  72     if (comment.isEmpty()) {
  73         editComment->setFontItalic(true);
  74         editComment->setText(i18n("Click to add comment..."));
  75     } else {
  76         editComment->setFontItalic(false);
  77         editComment->setText(comment);
  78     }
  79     editComment->blockSignals(false);
  80 }
  81
  82
  83 MetaDataWidget::MetaDataWidget(QWidget* parent) :
  84     QWidget(parent)
  85 {
  86 #ifdef HAVE_KMETADATA
  87     d = new Private;
  88     d->editComment = new QTextEdit(this);
  89     d->ratingWidget = new KRatingWidget(this);
  90     d->tagWidget = new Nepomuk::KMetaData::TagWidget(this);
  91     connect(d->ratingWidget, SIGNAL(ratingChanged(int)), this, SLOT(slotRatingChanged(int)));
  92     connect(d->editComment, SIGNAL(textChanged()), this, SLOT(slotCommentChanged()));
  93
  94     QVBoxLayout* lay = new QVBoxLayout(this);
  95     lay->setMargin(0);
  96     QHBoxLayout* hbox = new QHBoxLayout;
  97     hbox->addWidget(new QLabel(i18n("Rating:"), this));
  98     hbox->addStretch(1);
  99     hbox->addWidget(d->ratingWidget);
 100     lay->addLayout(hbox);
 101     lay->addWidget(d->editComment);
 102     hbox = new QHBoxLayout;
 103     hbox->addWidget(new QLabel(i18n("Tags:"), this));
 104     hbox->addWidget(d->tagWidget, 1);
 105     lay->addLayout(hbox);
 106
 107     d->editComment->installEventFilter(this);
 108     d->editComment->viewport()->installEventFilter(this);
 109 #else
 110     d = 0;
 111 #endif
 112 }
 113
 114
 115 MetaDataWidget::~MetaDataWidget()
 116 {
 117     delete d;
 118 }
 119
 120
 121 void MetaDataWidget::setFile(const KUrl& url)
 122 {
 123 #ifdef HAVE_KMETADATA
 124     // FIXME: replace with KMetaData::File once we have it again
 125     d->fileUrl = url;
 126     d->file = Nepomuk::KMetaData::Resource(url.url(), s_nfoFile);
 127     d->ratingWidget->setRating(d->file.rating());
 128     d->tagWidget->setTaggedResource(d->file);
 129     d->loadComment(d->file.description());
 130 #endif
 131 }
 132
 133
 134 void MetaDataWidget::setFiles(const KUrl::List& urls)
 135 {
 136 #ifdef HAVE_KMETADATA
 137     // FIXME: support multiple files
 138     setFile(urls.first());
 139 #endif
 140 }
 141
 142
 143 void MetaDataWidget::slotCommentChanged()
 144 {
 145 #ifdef HAVE_KMETADATA
 146     if (d->editComment->toPlainText() != d->file.description()) {
 147 //    d->file.setLocation(url.url());
 148         d->file.setProperty(s_nfoFileUrl, d->fileUrl.url());
 149         d->file.setDescription(d->editComment->toPlainText());
 150     }
 151 #endif
 152 }
 153
 154
 155 void MetaDataWidget::slotRatingChanged(int rating)
 156 {
 157 #ifdef HAVE_KMETADATA
 158     if (rating != d->file.rating()) {
 159         //    d->file.setLocation(url.url());
 160         d->file.setProperty(s_nfoFileUrl, d->fileUrl.url());
 161         d->file.setRating(rating);
 162     }
 163 #endif
 164 }
 165
 166
 167 bool MetaDataWidget::eventFilter(QObject* obj, QEvent* event)
 168 {
 169 #ifdef HAVE_KMETADATA
 170     if (obj == d->editComment->viewport() || obj == d->editComment) {
 171         if (event->type() == QEvent::FocusOut) {
 172             // make sure the info text is displayed again
 173             d->loadComment(d->editComment->toPlainText());
 174         } else if (event->type() == QEvent::FocusIn) {
 175             d->editComment->setFontItalic(false);
 176             if (d->file.description().isEmpty()) {
 177                 d->editComment->setText(QString());
 178             }
 179         }
 180     }
 181 #endif
 182
 183     return QWidget::eventFilter(obj, event);
 184 }
 185
 186 #include "metadatawidget.moc"