static/ext/src/util/KeyMap.js
function() {
        var me = this;
        
        if (!me.enabled) {
            me.target.on(me.eventName, me.handleTargetEvent, me);
            me.enabled = true;
        }
    }
function() {
        var me = this;
        
        if (!me.enabled) {
            me.target.on(me.eventName, me.handleTargetEvent, me);
            me.enabled = true;
        }
    }
Enables this KeyMap