Apply the facets-patch written by Sebastian Trüg, which allows to filter search results in a very comfortable way. A lot of finetuning is necessary (e.g. the custom filter-prototypes from Dolphin will get removed etc). This will be done during the next weeks.

svn path=/trunk/KDE/kdebase/apps/; revision=1189951

2 files changed, 195 insertions, 0 deletions

diff --git a/src/panels/facets/facetpanel.cpp b/src/panels/facets/facetpanel.cpp
new file mode 100644
index 000000000..3c930209c
--- /dev/null
+++ b/src/panels/facets/facetpanel.cpp
@@ -0,0 +1,128 @@
+/***************************************************************************
+ *   Copyright (C) 2010 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 "facetpanel.h"
+
+#include <nepomuk/filequery.h>
+#include <nepomuk/facetwidget.h>
+#include <Nepomuk/Query/FileQuery>
+#include <Nepomuk/Query/Term>
+
+#include <kfileitem.h>
+#include <kio/jobclasses.h>
+#include <kio/job.h>
+
+#include <QtGui/QVBoxLayout>
+#include <QtGui/QTreeView>
+#include <QtGui/QPushButton>
+#include <kdebug.h>
+
+
+FacetPanel::FacetPanel(QWidget* parent)
+    : Panel(parent)
+{
+    QVBoxLayout* layout = new QVBoxLayout(this);
+    m_buttonRemoveFolderRestriction = new QPushButton( i18n( "Remove folder restriction" ), this );
+    connect( m_buttonRemoveFolderRestriction, SIGNAL( clicked() ), SLOT( slotRemoveFolderRestrictionClicked() ) );
+
+    layout->addWidget(m_buttonRemoveFolderRestriction);
+
+    m_facetWidget = new Nepomuk::Utils::FacetWidget( this );
+    layout->addWidget( m_facetWidget, 1 );
+    connect(m_facetWidget, SIGNAL(facetsChanged()), this, SLOT(slotFacetsChanged()) );
+
+    // init to empty panel
+    setQuery(Nepomuk::Query::Query());
+}
+
+
+FacetPanel::~FacetPanel()
+{
+}
+
+void FacetPanel::setUrl(const KUrl& url)
+{
+    kDebug() << url;
+    Panel::setUrl(url);
+
+    // disable us
+    setQuery(Nepomuk::Query::Query());
+
+    // get the query from the item
+    m_lastSetUrlStatJob = KIO::stat(url, KIO::HideProgressInfo);
+    connect(m_lastSetUrlStatJob, SIGNAL(result(KJob*)),
+            this, SLOT(slotSetUrlStatFinished(KJob*)));
+}
+
+
+void FacetPanel::setQuery(const Nepomuk::Query::Query& query)
+{
+    kDebug() << query << query.isValid() << query.toSparqlQuery();
+
+    if (query.isValid()) {
+        m_buttonRemoveFolderRestriction->setVisible( query.isFileQuery() && !query.toFileQuery().includeFolders().isEmpty() );
+        m_unfacetedRestQuery = query;
+        m_unfacetedRestQuery.setTerm( m_facetWidget->extractFacetsFromTerm( query.term() ) );
+        m_facetWidget->setClientQuery( query );
+        kDebug() << "Rest query after facets:" << m_unfacetedRestQuery;
+        setEnabled(true);
+    }
+    else {
+        m_unfacetedRestQuery = Nepomuk::Query::Query();
+        setEnabled(false);
+    }
+}
+
+
+void FacetPanel::slotSetUrlStatFinished(KJob* job)
+{
+    m_lastSetUrlStatJob = 0;
+    kDebug() << url();
+    const KIO::UDSEntry uds = static_cast<KIO::StatJob*>(job)->statResult();
+    const QString nepomukQueryStr = uds.stringValue( KIO::UDSEntry::UDS_NEPOMUK_QUERY );
+    kDebug() << nepomukQueryStr;
+    Nepomuk::Query::FileQuery nepomukQuery;
+    if ( !nepomukQueryStr.isEmpty() ) {
+        nepomukQuery = Nepomuk::Query::Query::fromString( nepomukQueryStr );
+    }
+    else if ( url().isLocalFile() ) {
+        // fallback query for local file URLs
+        nepomukQuery.addIncludeFolder(url(), false);
+    }
+    kDebug() << nepomukQuery;
+    setQuery(nepomukQuery);
+}
+
+
+void FacetPanel::slotFacetsChanged()
+{
+    Nepomuk::Query::Query query( m_unfacetedRestQuery && m_facetWidget->queryTerm() );
+    kDebug() << query;
+    emit urlActivated( query.toSearchUrl() );
+}
+
+
+void FacetPanel::slotRemoveFolderRestrictionClicked()
+{
+    Nepomuk::Query::FileQuery query( m_unfacetedRestQuery && m_facetWidget->queryTerm() );
+    query.setIncludeFolders( KUrl::List() );
+    query.setExcludeFolders( KUrl::List() );
+    m_facetWidget->setClientQuery( query );
+    emit urlActivated( query.toSearchUrl() );
+}
diff --git a/src/panels/facets/facetpanel.h b/src/panels/facets/facetpanel.h
new file mode 100644
index 000000000..6673c7953
--- /dev/null
+++ b/src/panels/facets/facetpanel.h
@@ -0,0 +1,67 @@
+/***************************************************************************
+ *   Copyright (C) 2010 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            *
+ ***************************************************************************/
+
+#ifndef FACETPANEL_H
+#define FACETPANEL_H
+
+#include "../panel.h"
+#include <nepomuk/query.h>
+
+class KJob;
+class QPushButton;
+
+namespace Nepomuk {
+    namespace Utils {
+        class FacetWidget;
+    }
+}
+
+class FacetPanel : public Panel
+{
+    Q_OBJECT
+
+public:
+    FacetPanel(QWidget* parent = 0);
+    ~FacetPanel();
+
+public slots:
+    void setUrl(const KUrl& url);
+    void setQuery(const Nepomuk::Query::Query& query);
+
+signals:
+    void urlActivated( const KUrl& url );
+
+private slots:
+    void slotSetUrlStatFinished(KJob*);
+    void slotFacetsChanged();
+    void slotRemoveFolderRestrictionClicked();
+
+private:
+    bool urlChanged() {
+        return true;
+    }
+
+    KJob* m_lastSetUrlStatJob;
+
+    QPushButton* m_buttonRemoveFolderRestriction;
+    Nepomuk::Utils::FacetWidget* m_facetWidget;
+    Nepomuk::Query::Query m_unfacetedRestQuery;
+};
+
+#endif // FACETPANEL_H