Method select

src/dropkick.js:509–575

* Selects an option from the list * * @method select * @param {String} elem The element, index, or value to select * @param {Boolean} disabled Selects disabled options * @return {Node} The selected element * @example * var elm = new Drop

( elem, disabled )

   * elm.select("AL"); // selects & returns option with the value "AL"
   */
  select( elem, disabled ) {
    var i, index, option, combobox,
    select = this.data.select;

    if ( typeof elem === "number" ) {
      elem = this.item( elem );
    }

    if ( typeof elem === "string" ) {
      for ( i = 0; i < this.length; i++ ) {
        if ( this.options[ i ].getAttribute( "data-value" ) === elem ) {
          elem = this.options[ i ];
        }
      }
    }

    // No element or enabled option
    if ( !elem || typeof elem === "string" ||
         ( !disabled && _.hasClass( elem, "dk-option-disabled" ) ) ) {
      return false;
    }

    if ( _.hasClass( elem, "dk-option" ) ) {
      index = this.options.indexOf( elem );
      option = select.options[ index ];

      if ( this.multiple ) {
        _.toggleClass( elem, "dk-option-selected" );
        option.selected = !option.selected;

        if ( _.hasClass( elem, "dk-option-selected" ) ) {
          elem.setAttribute( "aria-selected", "true" );
          this.selectedOptions.push( elem );
        } else {
          elem.setAttribute( "aria-selected", "false" );
          index = this.selectedOptions.indexOf( elem );
          this.selectedOptions.splice( index, 1 );
        }
      } else {
        combobox = this.data.elem.firstChild;

        if ( this.selectedOptions.length ) {
          _.removeClass( this.selectedOptions[0], "dk-option-selected" );
          this.selectedOptions[0].setAttribute( "aria-selected", "false" );
        }

        _.addClass( elem, "dk-option-selected" );
        elem.setAttribute( "aria-selected", "true" );

        combobox.setAttribute( "aria-activedescendant", elem.id );
        combobox.className = "dk-selected " + option.className;
        combobox.innerHTML = option.innerHTML;

        this.selectedOptions[0] = elem;
        option.selected = true;
      }

      this.selectedIndex = select.selectedIndex;