hopefully fix the keyboard navigation

svn path=/trunk/KDE/kdegraphics/okular/; revision=703795

ui/sidebar.cpp

@@ -229,8 +229,54 @@ void SidebarListWidget::mouseReleaseEvent( QMouseEvent *event )
 
 QModelIndex SidebarListWidget::moveCursor( QAbstractItemView::CursorAction cursorAction, Qt::KeyboardModifiers modifiers )
 {
+    Q_UNUSED( modifiers )
     QModelIndex oldindex = currentIndex();
-    QModelIndex newindex = QListWidget::moveCursor( cursorAction, modifiers );
+    QModelIndex newindex = oldindex;
+    switch ( cursorAction )
+    {
+        case MoveUp:
+        case MovePrevious:
+        {
+            int row = oldindex.row() - 1;
+            while ( row > -1 && !( model()->index( row, 0 ).flags() & Qt::ItemIsSelectable ) ) --row;
+            if ( row > -1 )
+                newindex = model()->index( row, 0 );
+            break;
+        }
+        case MoveDown:
+        case MoveNext:
+        {
+            int row = oldindex.row() + 1;
+            int max = model()->rowCount();
+            while ( row < max && !( model()->index( row, 0 ).flags() & Qt::ItemIsSelectable ) ) ++row;
+            if ( row < max )
+                newindex = model()->index( row, 0 );
+            break;
+        }
+        case MoveHome:
+        case MovePageUp:
+        {
+            int row = 0;
+            while ( row < oldindex.row() && !( model()->index( row, 0 ).flags() & Qt::ItemIsSelectable ) ) ++row;
+            if ( row < oldindex.row() )
+                newindex = model()->index( row, 0 );
+            break;
+        }
+        case MoveEnd:
+        case MovePageDown:
+        {
+            int row = model()->rowCount() - 1;
+            while ( row > oldindex.row() && !( model()->index( row, 0 ).flags() & Qt::ItemIsSelectable ) ) --row;
+            if ( row > oldindex.row() )
+                newindex = model()->index( row, 0 );
+            break;
+        }
+        // no navigation possible for these
+        case MoveLeft:
+        case MoveRight:
+            break;
+    }
+
     // dirty hack to change item when the key cursor changes item
     if ( oldindex != newindex )
     {