code: function () {
  
  		if (!this._focus_acquired_listener) {
  			this._focus_acquired_listener = Lava.app.on('focus_acquired', this._onFocusTargetAcquired, this);
  			this._focus_lost_listener = Lava.app.on('focus_lost', this.clearFocusedTarget, this);
  			this._focus_listener = Lava.Core.addGlobalHandler('blur', this._onElementBlurred, this);
  			this._blur_listener = Lava.Core.addGlobalHandler('focus', this._onElementFocused, this);
  		}
  
  	}
docs: Start listening to global focus-related events