Group classes into folders, Dolphin is too big in the meantime for having a flat directory hierarchy. dolphin/src/CMakeLists.txt will be cleaned up later.

svn path=/trunk/KDE/kdebase/apps/; revision=911065

1 files changed, 281 insertions, 0 deletions

diff --git a/src/panels/information/metadatawidget.cpp b/src/panels/information/metadatawidget.cpp
new file mode 100644
index 000000000..44a4c029f
--- /dev/null
+++ b/src/panels/information/metadatawidget.cpp
@@ -0,0 +1,281 @@
+/***************************************************************************
+ *   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 "metadatawidget.h"
+
+#include "commentwidget.h"
+
+#include <config-nepomuk.h>
+
+#include <klocale.h>
+#include <KDebug>
+#include <KMessageBox>
+
+#include <QtCore/QEvent>
+#include <QtCore/QMutex>
+#include <QtCore/QMutexLocker>
+#include <QtCore/QThread>
+#include <QtGui/QLabel>
+#include <QtGui/QGridLayout>
+#include <QtGui/QTextEdit>
+
+#ifdef HAVE_NEPOMUK
+#include "nepomukmassupdatejob.h"
+#include <nepomuk/kmetadatatagwidget.h>
+#include <nepomuk/resourcemanager.h>
+#include <nepomuk/resource.h>
+#include <nepomuk/variant.h>
+#include <nepomuk/kratingwidget.h>
+#include <Soprano/Vocabulary/Xesam>
+#include "resourcetaggingwidget.h"
+#endif
+
+
+bool MetaDataWidget::metaDataAvailable()
+{
+#ifdef HAVE_NEPOMUK
+    return !Nepomuk::ResourceManager::instance()->init();
+#else
+    return false;
+#endif
+}
+
+
+class MetaDataWidget::Private
+{
+public:
+#ifdef HAVE_NEPOMUK
+    void loadComment(const QString& comment);
+
+    CommentWidget* editComment;
+    KRatingWidget* ratingWidget;
+    Nepomuk::ResourceTaggingWidget* tagWidget;
+
+    // shared data between the GUI-thread and
+    // the loader-thread (see LoadFilesThread):
+    QMutex mutex;
+    struct SharedData
+    {
+        int rating;
+        QString comment;
+        QList<Nepomuk::Resource> fileRes;
+        QMap<KUrl, Nepomuk::Resource> files;
+    } sharedData;
+
+    /**
+     * Loads the meta data of files and writes
+     * the result into a shared data pool that
+     * can be used by the widgets in the GUI thread.
+     */
+    class LoadFilesThread : public QThread
+    {
+    public:
+        LoadFilesThread(SharedData* sharedData, QMutex* mutex);
+        void setFiles(const KUrl::List& urls);
+        virtual void run();
+
+    private:
+        SharedData* m_sharedData;
+        QMutex* m_mutex;
+        KUrl::List m_urls;
+    };
+
+    LoadFilesThread* loadFilesThread;
+#endif
+};
+
+#ifdef HAVE_NEPOMUK
+void MetaDataWidget::Private::loadComment(const QString& comment)
+{
+    editComment->setComment( comment );
+}
+
+MetaDataWidget::Private::LoadFilesThread::LoadFilesThread(
+    MetaDataWidget::Private::SharedData* sharedData,
+    QMutex* mutex) :
+    m_sharedData(sharedData),
+    m_mutex(mutex),
+    m_urls()
+{
+}
+
+void MetaDataWidget::Private::LoadFilesThread::setFiles(const KUrl::List& urls)
+{
+    QMutexLocker locker( m_mutex );
+    m_urls = urls;
+}
+
+void MetaDataWidget::Private::LoadFilesThread::run()
+{
+    QMutexLocker locker( m_mutex );
+    const KUrl::List urls = m_urls;
+    locker.unlock();
+
+    bool first = true;
+    QList<Nepomuk::Resource> fileRes;
+    QMap<KUrl, Nepomuk::Resource> files;
+    unsigned int rating = 0;
+    QString comment;
+    Q_FOREACH( const KUrl &url, urls ) {
+        Nepomuk::Resource file( url, Soprano::Vocabulary::Xesam::File() );
+        files.insert( url, file );
+        fileRes.append( file );
+
+        if ( !first && rating != file.rating() ) {
+            rating = 0; // reset rating
+        }
+        else if ( first ) {
+            rating = file.rating();
+        }
+
+        if ( !first && comment != file.description() ) {
+            comment.clear();
+        }
+        else if ( first ) {
+            comment = file.description();
+        }
+        first = false;
+    }
+
+    locker.relock();
+    m_sharedData->rating = rating;
+    m_sharedData->comment = comment;
+    m_sharedData->fileRes = fileRes;
+    m_sharedData->files = files;
+}
+#endif
+
+MetaDataWidget::MetaDataWidget(QWidget* parent) :
+    QWidget(parent)
+{
+#ifdef HAVE_NEPOMUK
+    d = new Private;
+    d->editComment = new CommentWidget(this);
+    d->editComment->setFocusPolicy(Qt::ClickFocus);
+    d->ratingWidget = new KRatingWidget(this);
+    d->ratingWidget->setAlignment( Qt::AlignCenter );
+    d->tagWidget = new Nepomuk::ResourceTaggingWidget(this);
+    connect(d->ratingWidget, SIGNAL(ratingChanged(unsigned int)), this, SLOT(slotRatingChanged(unsigned int)));
+    connect(d->editComment, SIGNAL(commentChanged(const QString&)), this, SLOT(slotCommentChanged(const QString&)));
+    connect( d->tagWidget, SIGNAL( tagClicked( const Nepomuk::Tag& ) ), this, SLOT( slotTagClicked( const Nepomuk::Tag& ) ) );
+
+    d->sharedData.rating = 0;
+    d->loadFilesThread = new Private::LoadFilesThread(&d->sharedData, &d->mutex);
+    connect(d->loadFilesThread, SIGNAL(finished()), this, SLOT(slotLoadingFinished()));
+
+    QVBoxLayout* lay = new QVBoxLayout(this);
+    lay->setMargin(0);
+    lay->addWidget(d->ratingWidget);
+    lay->addWidget(d->editComment);
+    lay->addWidget( d->tagWidget );
+#else
+    d = 0;
+#endif
+}
+
+
+MetaDataWidget::~MetaDataWidget()
+{
+#ifdef HAVE_NEPOMUK
+    delete d->loadFilesThread;
+#endif
+    delete d;
+}
+
+
+void MetaDataWidget::setFile(const KUrl& url)
+{
+    kDebug() << url;
+    KUrl::List urls;
+    urls.append( url );
+    setFiles( urls );
+}
+
+void MetaDataWidget::setFiles(const KUrl::List& urls)
+{
+#ifdef HAVE_NEPOMUK
+    d->loadFilesThread->setFiles( urls );
+    d->loadFilesThread->start();
+#else
+    Q_UNUSED( urls );
+#endif
+}
+
+
+void MetaDataWidget::slotCommentChanged( const QString& s )
+{
+#ifdef HAVE_NEPOMUK
+    QMutexLocker locker( &d->mutex );
+    Nepomuk::MassUpdateJob* job = Nepomuk::MassUpdateJob::commentResources( d->sharedData.files.values(), s );
+    connect( job, SIGNAL( result( KJob* ) ),
+             this, SLOT( metadataUpdateDone() ) );
+    setEnabled( false ); // no updates during execution
+    job->start();
+#else
+    Q_UNUSED( s );
+#endif
+}
+
+
+void MetaDataWidget::slotRatingChanged(unsigned int rating)
+{
+#ifdef HAVE_NEPOMUK
+    QMutexLocker locker( &d->mutex );
+    Nepomuk::MassUpdateJob* job = Nepomuk::MassUpdateJob::rateResources( d->sharedData.files.values(), rating );
+    connect( job, SIGNAL( result( KJob* ) ),
+             this, SLOT( metadataUpdateDone() ) );
+    setEnabled( false ); // no updates during execution
+    job->start();
+#else
+    Q_UNUSED( rating );
+#endif
+}
+
+
+void MetaDataWidget::metadataUpdateDone()
+{
+    setEnabled( true );
+}
+
+
+bool MetaDataWidget::eventFilter(QObject* obj, QEvent* event)
+{
+    return QWidget::eventFilter(obj, event);
+}
+
+
+void MetaDataWidget::slotTagClicked( const Nepomuk::Tag& tag )
+{
+    Q_UNUSED( tag );
+#ifdef HAVE_NEPOMUK
+    d->tagWidget->showTagPopup( QCursor::pos() );
+#endif
+}
+
+void MetaDataWidget::slotLoadingFinished()
+{
+#ifdef HAVE_NEPOMUK
+    QMutexLocker locker( &d->mutex );
+    d->ratingWidget->setRating( d->sharedData.rating );
+    d->loadComment( d->sharedData.comment );
+    d->tagWidget->setResources( d->sharedData.fileRes );
+#endif
+}
+
+#include "metadatawidget.moc"