/**
 * @requires moment
 */
(function(ns) {
    "use strict";
    /**
     * @alias lib.form.element.TimeSelect
     * @constructor
     */
    ns.TimeSelect = function () { this.construct.apply(this, arguments); };

    ns.TimeSelect.prototype.construct = function (options) {
        this.id = options.id;
        this.format = options.format;
        this.element = $('#' + this.id);
        if (!this.element.length) {
            throw new Error('TimeSelect element [id="' + this.id + '"] initialization failed');
        }
        this.dropdowns = this.element.parent().find('select[data-target="' + this.id +'"]');
        this.dropdowns.change(_.bind(this.onChange, this));
    };

    ns.TimeSelect.prototype.onChange = function ()
    {
        var value = this.format;
        this.dropdowns.each(function () {
            if (!this.value.length) {
                value = '';
                return false;
            }
            value = value.replace($(this).data('part'), this.value);
            return true;
        });
        var time = moment(value, this.getJsFormat());
        if (time.isValid()) {
            value = time.format('HH:mm:ss');
        } else {
            value = '';
        }
        this.element.val(value);
    };

    ns.TimeSelect.prototype.getJsFormat = function ()
    {
        return this.format.replace('g', 'h').replace('i', 'mm');
    };
})(qs.defineNS('lib.form.element'));