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, 21 insertions, 0 deletions

diff --git a/src/views/dolphinviewactionhandler.cpp b/src/views/dolphinviewactionhandler.cpp
index aead11d25..eb127e2f7 100644
--- a/src/views/dolphinviewactionhandler.cpp
+++ b/src/views/dolphinviewactionhandler.cpp
@@ -20,6 +20,8 @@
 
 #include "dolphinviewactionhandler.h"
 
+#include <config-nepomuk.h>
+
 #include "settings/viewpropertiesdialog.h"
 #include "views/dolphinview.h"
 #include "views/zoomlevelinfo.h"
@@ -37,6 +39,10 @@
 #include <KRun>
 #include <KPropertiesDialog>
 
+#ifdef HAVE_NEPOMUK
+    #include <Nepomuk/ResourceManager>
+#endif
+
 #include <KDebug>
 
 DolphinViewActionHandler::DolphinViewActionHandler(KActionCollection* collection, QObject* parent) :
@@ -228,6 +234,16 @@ QActionGroup* DolphinViewActionHandler::createFileItemRolesActionGroup(const QSt
     KActionMenu* groupMenu = 0;
     QActionGroup* groupMenuGroup = 0;
 
+    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
+
     const QList<KFileItemModel::RoleInfo> rolesInfo = KFileItemModel::rolesInformation();
     foreach (const KFileItemModel::RoleInfo& info, rolesInfo) {
         if (!isSortGroup && info.role == "name") {
@@ -265,6 +281,11 @@ QActionGroup* DolphinViewActionHandler::createFileItemRolesActionGroup(const QSt
         action->setText(info.translation);
         action->setData(info.role);
 
+        const bool enable = (!info.requiresNepomuk && !info.requiresIndexer) ||
+                            (info.requiresNepomuk && nepomukRunning) ||
+                            (info.requiresIndexer && indexingEnabled);
+        action->setEnabled(enable);
+
         if (isSortGroup) {
             m_sortByActions.insert(info.role, action);
         } else {