},
updateValue: function(text, usage) {
- var me = this;
+ let me = this;
+
+ if (me.lastText === text && me.lastUsage === usage) {
+ return;
+ }
+ me.lastText = text;
+ me.lastUsage = usage;
+
var label = me.getComponent('label');
label.update(Ext.apply(label.data, { title: me.title, usage: text }));