Fix for bug #600 Renaming layer in legend doesn't stick

git-svn-id: http://svn.osgeo.org/qgis/trunk@6615 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/app/legend/qgslegend.cpp

@@ -1456,6 +1456,16 @@ void QgsLegend::handleItemChange(QTreeWidgetItem* item, int row)
     }
 
   closePersistentEditor(item, row);
+  //if the text of a QgsLegendLayer has changed, change the display names of all its maplayers
+  QgsLegendLayer* theLegendLayer = dynamic_cast<QgsLegendLayer*>(item); //item is a legend layer
+  if(theLegendLayer)
+    {
+       std::list<QgsMapLayer*> theMapLayers = theLegendLayer->mapLayers();
+       for(std::list<QgsMapLayer*>::iterator it = theMapLayers.begin(); it != theMapLayers.end(); ++it)
+	 {
+	   (*it)->setLayerName(theLegendLayer->text(0));
+	 }
+    }
 
   std::map<QTreeWidgetItem*, Qt::CheckState>::iterator it = mStateOfCheckBoxes.find(item);
   if (it == mStateOfCheckBoxes.end())