Change map layer display name if name is changed in the legend

git-svn-id: http://svn.osgeo.org/qgis/trunk@5859 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/gui/qgsmaplayer.cpp

@@ -112,12 +112,12 @@ QString const & QgsMapLayer::getLayerID() const
 }
 
 /** Write property of QString layerName. */
-void QgsMapLayer::setLayerName(const QString & _newVal)
+void QgsMapLayer::setLayerName(const QString & _newVal, bool updateLegend)
 {
   QgsDebugMsg("QgsMapLayer::setLayerName: new name is '" + _newVal);
   layerName = capitaliseLayerName(_newVal);
   // And update the legend if one exists
-  if (mLegend)
+  if (mLegend && updateLegend)
     mLegend->setName(mLegendLayerFile, layerName);
 }
 

src/gui/qgsmaplayer.h

@@ -73,8 +73,10 @@ class QgsMapLayer : public QObject
 
     /*! Set the display name of the layer
        # @param name New name for the layer
+       # @param updateLegend false if legend should not be updated
+       (to avoid infinite recursion when this function is called from the legend itself)
      */
-    void setLayerName(const QString & name);
+    void setLayerName(const QString & name, bool updateLegend=true);
 
     /*! Get the display name of the layer
      * @return the layer name

src/legend/qgslegend.cpp

@@ -1478,7 +1478,18 @@ void QgsLegend::handleItemChange(QTreeWidgetItem* item, int row)
       return;
     }
 
+  //close the editor (for QgsLegendLayer and QgsLegendGroup)
   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), false);
+	 }
+    }
 
   std::map<QTreeWidgetItem*, Qt::CheckState>::iterator it = mStateOfCheckBoxes.find(item);
   if(it != mStateOfCheckBoxes.end())