src/aria/widgets/form/MultiSelect.js
function (information) {
            var event = information.event;
            var keyCode = event.keyCode;

            if (this._isShiftF10Pressed(event) || (keyCode == ariaDomEvent.KC_ARROW_UP && this._checkCloseItem(information))) {
                this.focus();
                this._toggleDropdown();
                return true;
            }

            if (keyCode == ariaDomEvent.KC_ESCAPE) {
                if (this._dropDownOpen) {
                    this._toggleDropdown();
                    return true;
                }
            }

            if (keyCode == ariaDomEvent.KC_TAB) {
                return true;
            }
            return false;
        }
function (information) {
            var event = information.event;
            var keyCode = event.keyCode;

            if (this._isShiftF10Pressed(event) || (keyCode == ariaDomEvent.KC_ARROW_UP && this._checkCloseItem(information))) {
                this.focus();
                this._toggleDropdown();
                return true;
            }

            if (keyCode == ariaDomEvent.KC_ESCAPE) {
                if (this._dropDownOpen) {
                    this._toggleDropdown();
                    return true;
                }
            }

            if (keyCode == ariaDomEvent.KC_TAB) {
                return true;
            }
            return false;
        }
function ( information ) { var event = information . event ; var keyCode = event . keyCode ; if ( this . _isShiftF10Pressed ( event ) || ( keyCode == ariaDomEvent . KC_ARROW_UP && this . _checkCloseItem ( information ) ) ) { this . focus ( ) ; this . _toggleDropdown ( ) ; return true ; } if ( keyCode == ariaDomEvent . KC_ESCAPE ) { if ( this . _dropDownOpen ) { this . _toggleDropdown ( ) ; return true ; } } if ( keyCode == ariaDomEvent . KC_TAB ) { return true ; } return false ; }
Handle key event not handled by the list, in this case arrow up to close the dropdown

@protected

@param {Object} information Information about the key event.

@return {Boolean}
Handle key event not handled by the list in this case arrow up to close the dropdown