Added count() method to ElementsCollectionItem class and its subclasses.

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/branches/0.3@1216 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/elementdefinition.cpp

@@ -175,6 +175,20 @@ ElementDefinition *ElementDefinition::createElement(const QString &) {
 	return(0);
 }
 
+/**
+	@return always true - an element contains nothing but itself
+*/
+bool ElementDefinition::isEmpty() {
+	return(false);
+}
+
+/**
+	@return always 1
+*/
+int ElementDefinition::count() {
+	return(1);
+}
+
 /**
 	@return toujours 0 - un element n'est pas une collection
 */