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;
        }
    }
function ( ) { var me = this ; if ( ! me . enabled ) { me . target . on ( me . eventName , me . handleTargetEvent , me ) ; me . enabled = true ; } }
Enables this KeyMap
Enables this KeyMap