+ void onAddLandCovers();
+ /**
+ * Remove selected land covers from the calculation case.
+ */
+ void onRemoveLandCovers();
+
+ /**
+ * Set the given bathymetry/type merge type to the current zone.
+ */
+ void onSetMergeType( int theMergeType, QString& theMergeObjectName );
+ /**
+ * Set the given Strickler merge type to the current zone.
+ */
+ void onSetMergeStricklerType( int theMergeType, QString& theStricklerTypeName );