+ // Header text cannot flex, but must be natural size if it's being centered
+ delete me.header.items.items[0].flex;
+
+ // For Centering, surround the text with two flex:1 spacers.
+ me.suspendLayout = true;
+ me.header.insert(1, {
+ xtype: 'component',
+ ui : me.ui,
+ flex : 1
+ });