Improved KMetaData integration. The Dolphin info sidebar now uses KMetaData to allow file rating, commenting, and tagging.

This commit is indended to show what can be done with KMetaData in an easy way. The GUI is not perfect yet.

svn path=/trunk/KDE/kdebase/apps/; revision=644510

1 files changed, 165 insertions, 0 deletions

diff --git a/src/metadatawidget.cpp b/src/metadatawidget.cpp
new file mode 100644
index 000000000..a057d0bba
--- /dev/null
+++ b/src/metadatawidget.cpp
@@ -0,0 +1,165 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Sebastian Trueg <[email protected]>                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#include <config-kmetadata.h>
+
+#include "metadatawidget.h"
+
+#include <klocale.h>
+
+#include <QLabel>
+#include <QGridLayout>
+#include <QTextEdit>
+
+#ifdef HAVE_KMETADATA
+#include <kmetadatatagwidget.h>
+#include <kmetadata/resourcemanager.h>
+#include <kmetadata/file.h>
+#include <kratingwidget.h>
+#include <kmetadatatagwidget.h>
+#endif
+
+
+bool MetaDataWidget::metaDataAvailable()
+{
+#ifdef HAVE_KMETADATA
+    return !Nepomuk::KMetaData::ResourceManager::instance()->init();
+#else
+    return false;
+#endif
+}
+
+
+class MetaDataWidget::Private
+{
+public:
+    void loadComment( const QString& comment ) {
+        editComment->blockSignals( true );
+        if ( comment.isEmpty() ) {
+            editComment->setFontItalic( true );
+            editComment->setText( i18n( "Click to add comment..." ) );
+        }
+        else {
+            editComment->setFontItalic( false );
+            editComment->setText( comment );
+        }
+        editComment->blockSignals( false );
+    }
+
+    KUrl fileUrl;
+
+#ifdef HAVE_KMETADATA
+    Nepomuk::KMetaData::File file;
+
+    QTextEdit* editComment;
+    KRatingWidget* ratingWidget;
+    Nepomuk::KMetaData::TagWidget* tagWidget;
+#endif
+};
+
+
+MetaDataWidget::MetaDataWidget( QWidget* parent )
+    : QWidget( parent )
+{
+    d = new Private;
+
+#ifdef HAVE_KMETADATA
+    d->editComment = new QTextEdit( this );
+    d->tagWidget = new Nepomuk::KMetaData::TagWidget( this );
+    d->ratingWidget = new KRatingWidget( this );
+    connect( d->ratingWidget, SIGNAL(ratingChanged(int)), this, SLOT(slotRatingChanged(int)) );
+    connect( d->editComment, SIGNAL( textChanged() ), this, SLOT( slotCommentChanged() ) );
+
+    QVBoxLayout* lay = new QVBoxLayout( this );
+    lay->setMargin( 0 );
+    QHBoxLayout* hbox = new QHBoxLayout;
+    hbox->addWidget( new QLabel( i18n( "Rating:" ), this ) );
+    hbox->addStretch( 1 );
+    hbox->addWidget( d->ratingWidget );
+    lay->addLayout( hbox );
+    lay->addWidget( d->editComment );
+    hbox = new QHBoxLayout;
+    hbox->addWidget( new QLabel( i18n( "Tags:" ), this ) );
+    hbox->addWidget( d->tagWidget, 1 );
+    lay->addLayout( hbox );
+
+    d->editComment->installEventFilter( this );
+    d->editComment->viewport()->installEventFilter( this );
+#endif
+}
+
+
+MetaDataWidget::~MetaDataWidget()
+{
+    delete d;
+}
+
+
+void MetaDataWidget::setFile( const KUrl& url )
+{
+#ifdef HAVE_KMETADATA
+    d->fileUrl = url;
+    d->file = Nepomuk::KMetaData::File( url.url() );
+    d->file.setLocation( url.url() );
+    d->ratingWidget->setRating( d->file.getRating() );
+    d->tagWidget->setTaggedResource( d->file );
+    d->loadComment( d->file.getComment() );
+#endif
+}
+
+
+void MetaDataWidget::setFiles( const KUrl::List urls )
+{
+    // FIXME: support multiple files
+    setFile( urls.first() );
+}
+
+
+void MetaDataWidget::slotCommentChanged()
+{
+    d->file.setComment( d->editComment->toPlainText() );
+}
+
+
+void MetaDataWidget::slotRatingChanged( int r )
+{
+    d->file.setRating( r );
+}
+
+
+bool MetaDataWidget::eventFilter( QObject* obj, QEvent* event )
+{
+    if (  obj == d->editComment->viewport()
+          || obj == d->editComment ) {
+        if ( event->type() == QEvent::FocusOut ) {
+            // make sure the info text is displayed again
+            d->loadComment( d->editComment->toPlainText() );
+        }
+        else if ( event->type() == QEvent::FocusIn ) {
+            qDebug() << "JKGHLKGLKH�LKJHL�" << endl;
+            d->editComment->setFontItalic( false );
+            if ( d->file.getComment().isEmpty() )
+                d->editComment->setText( QString() );
+        }
+    }
+
+    return QWidget::eventFilter( obj, event );
+}
+
+#include "metadatawidget.moc"