# Yahoo! UI Library

### queue 3.0.0b1

Yahoo! UI Library > queue > queue-promote.js (source view)
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    /**
     * Adds methods promote, remove, and indexOf to Queue instances.
     *
     * @module queue
     * @submodule queue-promote
     * @for Queue
     */

    Y.mix(Y.Queue.prototype, {
        /**
         * Returns the current index in the queue of the specified item
         *
         * @method indexOf
         * @param needle {MIXED} the item to search for
         * @return {Number} the index of the item or -1 if not found
         */
        indexOf : function (callback) {
            return Y.Array.indexOf(this._q, callback);
        },

        /**
         * Moves the referenced item to the head of the queue
         *
         * @method promote
         * @param item {MIXED} an item in the queue
         */
        promote : function (callback) {
            var index = this.indexOf(callback);

            if (index > -1) {
                this._q.unshift(this._q.splice(index,1));
            }
        },

        /**
         * Removes the referenced item from the queue
         *
         * @method remove
         * @param item {MIXED} an item in the queue
         */
        remove : function (callback) {
            var index = this.indexOf(callback);

            if (index > -1) {
                this._q.splice(index,1);
            }
        }

    });

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