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