Allow showing Nepomuk metadata inside views

Metadata like image-size, rating, comments, tags, ... can be shown
now in the view (e.g. as column in the Details mode).

Still open: The rating-information needs to be shown as stars.

In the context of this feature also the following bugs have been
fixed:
- Fix visual glitches in the header of the Details mode
- Improve the minimum column width calculation to respect also
  the headling and not only the content

BUG: 296782
FIXED-IN: 4.9.0

1 files changed, 24 insertions, 0 deletions

diff --git a/src/settings/additionalinfodialog.cpp b/src/settings/additionalinfodialog.cpp
index 9e5f170da..3cac35b7b 100644
--- a/src/settings/additionalinfodialog.cpp
+++ b/src/settings/additionalinfodialog.cpp
@@ -19,12 +19,18 @@
 
 #include "additionalinfodialog.h"
 
+#include <config-nepomuk.h>
+
 #include <KLocale>
 #include "kitemviews/kfileitemmodel.h"
 #include <QCheckBox>
 #include <QLabel>
 #include <QVBoxLayout>
 
+#ifdef HAVE_NEPOMUK
+    #include <Nepomuk/ResourceManager>
+#endif
+
 AdditionalInfoDialog::AdditionalInfoDialog(QWidget* parent,
                                            const QList<QByteArray>& visibleRoles) :
     KDialog(parent),
@@ -44,12 +50,30 @@ AdditionalInfoDialog::AdditionalInfoDialog(QWidget* parent,
     header->setWordWrap(true);
 
     // Add checkboxes
+    bool nepomukRunning = false;
+    bool indexingEnabled = false;
+#ifdef HAVE_NEPOMUK
+    nepomukRunning = (Nepomuk::ResourceManager::instance()->init() == 0);
+    if (nepomukRunning) {
+        KConfig config("nepomukserverrc");
+        indexingEnabled = config.group("Service-nepomukfileindexer").readEntry("autostart", false);
+    }
+#endif
+
     m_listWidget = new QListWidget(mainWidget);
     m_listWidget->setSelectionMode(QAbstractItemView::NoSelection);
     const QList<KFileItemModel::RoleInfo> rolesInfo = KFileItemModel::rolesInformation();
     foreach (const KFileItemModel::RoleInfo& info, rolesInfo) {
         QListWidgetItem* item = new QListWidgetItem(info.translation, m_listWidget);
         item->setCheckState(visibleRoles.contains(info.role) ? Qt::Checked : Qt::Unchecked);
+
+        const bool enable = (!info.requiresNepomuk && !info.requiresIndexer) ||
+                            (info.requiresNepomuk && nepomukRunning) ||
+                            (info.requiresIndexer && indexingEnabled);
+
+        if (!enable) {
+            item->setFlags(item->flags() & ~Qt::ItemIsEnabled);
+        }
     }
 
     QVBoxLayout* layout = new QVBoxLayout(mainWidget);