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 #ifdef HAVE_KMETADATA
  70 void MetaDataWidget::Private::loadComment(const QString& comment)
  71 {
  72     editComment->blockSignals(true);
  73     if (comment.isEmpty()) {
  74         editComment->setFontItalic(true);
  75         editComment->setText(i18n("Click to add comment..."));
  76     } else {
  77         editComment->setFontItalic(false);
  78         editComment->setText(comment);
  79     }
  80     editComment->blockSignals(false);
  81 }
  82 #endif
  83
  84
  85 MetaDataWidget::MetaDataWidget(QWidget* parent) :
  86     QWidget(parent)
  87 {
  88 #ifdef HAVE_KMETADATA
  89     d = new Private;
  90     d->editComment = new QTextEdit(this);
  91     d->ratingWidget = new KRatingWidget(this);
  92     d->tagWidget = new Nepomuk::KMetaData::TagWidget(this);
  93     connect(d->ratingWidget, SIGNAL(ratingChanged(int)), this, SLOT(slotRatingChanged(int)));
  94     connect(d->editComment, SIGNAL(textChanged()), this, SLOT(slotCommentChanged()));
  95
  96     QVBoxLayout* lay = new QVBoxLayout(this);
  97     lay->setMargin(0);
  98     QHBoxLayout* hbox = new QHBoxLayout;
  99     hbox->addWidget(new QLabel(i18n("Rating:"), this));
 100     hbox->addStretch(1);
 101     hbox->addWidget(d->ratingWidget);
 102     lay->addLayout(hbox);
 103     lay->addWidget(d->editComment);
 104     hbox = new QHBoxLayout;
 105     hbox->addWidget(new QLabel(i18n("Tags:"), this));
 106     hbox->addWidget(d->tagWidget, 1);
 107     lay->addLayout(hbox);
 108
 109     d->editComment->installEventFilter(this);
 110     d->editComment->viewport()->installEventFilter(this);
 111 #else
 112     d = 0;
 113 #endif
 114 }
 115
 116
 117 MetaDataWidget::~MetaDataWidget()
 118 {
 119     delete d;
 120 }
 121
 122
 123 void MetaDataWidget::setFile(const KUrl& url)
 124 {
 125 #ifdef HAVE_KMETADATA
 126     // FIXME: replace with KMetaData::File once we have it again
 127     d->fileUrl = url;
 128     d->file = Nepomuk::KMetaData::Resource(url.url(), s_nfoFile);
 129     d->ratingWidget->setRating(d->file.rating());
 130     d->tagWidget->setTaggedResource(d->file);
 131     d->loadComment(d->file.description());
 132 #endif
 133 }
 134
 135
 136 void MetaDataWidget::setFiles(const KUrl::List& urls)
 137 {
 138 #ifdef HAVE_KMETADATA
 139     // FIXME: support multiple files
 140     setFile(urls.first());
 141 #endif
 142 }
 143
 144
 145 void MetaDataWidget::slotCommentChanged()
 146 {
 147 #ifdef HAVE_KMETADATA
 148     if (d->editComment->toPlainText() != d->file.description()) {
 149 //    d->file.setLocation(url.url());
 150         d->file.setProperty(s_nfoFileUrl, d->fileUrl.url());
 151         d->file.setDescription(d->editComment->toPlainText());
 152     }
 153 #endif
 154 }
 155
 156
 157 void MetaDataWidget::slotRatingChanged(int rating)
 158 {
 159 #ifdef HAVE_KMETADATA
 160     if (rating != d->file.rating()) {
 161         //    d->file.setLocation(url.url());
 162         d->file.setProperty(s_nfoFileUrl, d->fileUrl.url());
 163         d->file.setRating(rating);
 164     }
 165 #endif
 166 }
 167
 168
 169 bool MetaDataWidget::eventFilter(QObject* obj, QEvent* event)
 170 {
 171 #ifdef HAVE_KMETADATA
 172     if (obj == d->editComment->viewport() || obj == d->editComment) {
 173         if (event->type() == QEvent::FocusOut) {
 174             // make sure the info text is displayed again
 175             d->loadComment(d->editComment->toPlainText());
 176         } else if (event->type() == QEvent::FocusIn) {
 177             d->editComment->setFontItalic(false);
 178             if (d->file.description().isEmpty()) {
 179                 d->editComment->setText(QString());
 180             }
 181         }
 182     }
 183 #endif
 184
 185     return QWidget::eventFilter(obj, event);
 186 }
 187
 188 #include "metadatawidget.moc"