API: datasource Type.js (YUI Library)

# Yahoo! UI Library

### DataSource Utility 2.8.1

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    /****************************************************************************/
    /****************************************************************************/
    /****************************************************************************/

    /**
     * The static Number class provides helper functions to deal with data of type
     * Number.
     *
     * @namespace YAHOO.util
     * @requires yahoo
     * @class Number
     * @static
     */
     YAHOO.util.Number = {

         /**
         * Takes a native JavaScript Number and formats to string for display to user.
         *
         * @method format
         * @param nData {Number} Number.
         * @param oConfig {Object} (Optional) Optional configuration values:
         *  <dl>
         *   <dt>prefix {String}</dd>
         *   <dd>String prepended before each number, like a currency designator "$"</dd>
         *   <dt>decimalPlaces {Number}</dd>
         *   <dd>Number of decimal places to round.</dd>
         *   <dt>decimalSeparator {String}</dd>
         *   <dd>Decimal separator</dd>
         *   <dt>thousandsSeparator {String}</dd>
         *   <dd>Thousands separator</dd>
         *   <dt>suffix {String}</dd>
         *   <dd>String appended after each number, like " items" (note the space)</dd>
         *   <dt>negativeFormat</dt>
         *   <dd>String used as a guide for how to indicate negative numbers.  The first '#' character in the string will be replaced by the number.  Default '-#'.</dd>
         *  </dl>
         * @return {String} Formatted number for display. Note, the following values
         * return as "": null, undefined, NaN, "".
         */
        format : function(n, cfg) {
            if (!isFinite(+n)) {
                return '';
            }

            n   = !isFinite(+n) ? 0 : +n;
            cfg = YAHOO.lang.merge(YAHOO.util.Number.format.defaults, (cfg || {}));

            var neg    = n < 0,        absN   = Math.abs(n),
                places = cfg.decimalPlaces,
                sep    = cfg.thousandsSeparator,
                s, bits, i;

            if (places < 0) {
                // Get rid of the decimal info
                s = absN - (absN % 1) + '';
                i = s.length + places;

                // avoid 123 vs decimalPlaces -4 (should return "0")
                if (i > 0) {
                        // leverage toFixed by making 123 => 0.123 for the rounding
                        // operation, then add the appropriate number of zeros back on
                    s = Number('.' + s).toFixed(i).slice(2) +
                        new Array(s.length - i + 1).join('0');
                } else {
                    s = "0";
                }
            } else {        // There is a bug in IE's toFixed implementation:
                // for n in {(-0.94, -0.5], [0.5, 0.94)} n.toFixed() returns 0
                // instead of -1 and 1. Manually handle that case.
                s = absN < 1 && absN >= 0.5 && !places ? '1' : absN.toFixed(places);
            }

            if (absN > 1000) {
                bits  = s.split(/\D/);
                i  = bits[0].length % 3 || 3;

                bits[0] = bits[0].slice(0,i) +
                          bits[0].slice(i).replace(/(\d{3})/g, sep + '$1');

                s = bits.join(cfg.decimalSeparator);
            }

            s = cfg.prefix + s + cfg.suffix;

            return neg ? cfg.negativeFormat.replace(/#/,s) : s;
        }
    };
    YAHOO.util.Number.format.defaults = {
        decimalSeparator : '.',
        decimalPlaces    : null,
        thousandsSeparator : '',
        prefix : '',
        suffix : '',
        negativeFormat : '-#'
    };

    /****************************************************************************/
    /****************************************************************************/
    /****************************************************************************/

    (function () {

    var xPad=function (x, pad, r)
    {
        if(typeof r === 'undefined')
        {
            r=10;
        }
        for( ; parseInt(x, 10)<r && r>1; r/=10) {
            x = pad.toString() + x;
        }
        return x.toString();
    };

    /**
     * The static Date class provides helper functions to deal with data of type Date.
     *
     * @namespace YAHOO.util
     * @requires yahoo
     * @class Date
     * @static
     */
     var Dt = {
        formats: {
            a: function (d, l) { return l.a[d.getDay()]; },
            A: function (d, l) { return l.A[d.getDay()]; },
            b: function (d, l) { return l.b[d.getMonth()]; },
            B: function (d, l) { return l.B[d.getMonth()]; },
            C: function (d) { return xPad(parseInt(d.getFullYear()/100, 10), 0); },
            d: ['getDate', '0'],
            e: ['getDate', ' '],
            g: function (d) { return xPad(parseInt(Dt.formats.G(d)%100, 10), 0); },
            G: function (d) {
                    var y = d.getFullYear();
                    var V = parseInt(Dt.formats.V(d), 10);
                    var W = parseInt(Dt.formats.W(d), 10);

                    if(W > V) {
                        y++;
                    } else if(W===0 && V>=52) {
                        y--;
                    }

                    return y;
                },
            H: ['getHours', '0'],
            I: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, 0); },
            j: function (d) {
                    var gmd_1 = new Date('' + d.getFullYear() + '/1/1 GMT');
                    var gmdate = new Date('' + d.getFullYear() + '/' + (d.getMonth()+1) + '/' + d.getDate() + ' GMT');
                    var ms = gmdate - gmd_1;
                    var doy = parseInt(ms/60000/60/24, 10)+1;
                    return xPad(doy, 0, 100);
                },
            k: ['getHours', ' '],
            l: function (d) { var I=d.getHours()%12; return xPad(I===0?12:I, ' '); },
            m: function (d) { return xPad(d.getMonth()+1, 0); },
            M: ['getMinutes', '0'],
            p: function (d, l) { return l.p[d.getHours() >= 12 ? 1 : 0 ]; },
            P: function (d, l) { return l.P[d.getHours() >= 12 ? 1 : 0 ]; },
            s: function (d, l) { return parseInt(d.getTime()/1000, 10); },
            S: ['getSeconds', '0'],
            u: function (d) { var dow = d.getDay(); return dow===0?7:dow; },
            U: function (d) {
                    var doy = parseInt(Dt.formats.j(d), 10);
                    var rdow = 6-d.getDay();
                    var woy = parseInt((doy+rdow)/7, 10);
                    return xPad(woy, 0);
                },
            V: function (d) {
                    var woy = parseInt(Dt.formats.W(d), 10);
                    var dow1_1 = (new Date('' + d.getFullYear() + '/1/1')).getDay();
                    // First week is 01 and not 00 as in the case of %U and %W,
                    // so we add 1 to the final result except if day 1 of the year
                    // is a Monday (then %W returns 01).
                    // We also need to subtract 1 if the day 1 of the year is
                    // Friday-Sunday, so the resulting equation becomes:
                    var idow = woy + (dow1_1 > 4 || dow1_1 <= 1 ? 0 : 1);
                    if(idow === 53 && (new Date('' + d.getFullYear() + '/12/31')).getDay() < 4)
                    {
                        idow = 1;
                    }
                    else if(idow === 0)
                    {
                        idow = Dt.formats.V(new Date('' + (d.getFullYear()-1) + '/12/31'));
                    }

                    return xPad(idow, 0);
                },
            w: 'getDay',
            W: function (d) {
                    var doy = parseInt(Dt.formats.j(d), 10);
                    var rdow = 7-Dt.formats.u(d);
                    var woy = parseInt((doy+rdow)/7, 10);
                    return xPad(woy, 0, 10);
                },
            y: function (d) { return xPad(d.getFullYear()%100, 0); },
            Y: 'getFullYear',
            z: function (d) {
                    var o = d.getTimezoneOffset();
                    var H = xPad(parseInt(Math.abs(o/60), 10), 0);
                    var M = xPad(Math.abs(o%60), 0);
                    return (o>0?'-':'+') + H + M;
                },
            Z: function (d) {
    		var tz = d.toString().replace(/^.*:\d\d( GMT[+-]\d+)? \(?([A-Za-z ]+)\)?\d*$/, '$2').replace(/[a-z ]/g, '');
    		if(tz.length > 4) {
    			tz = Dt.formats.z(d);
    		}
    		return tz;
    	},
            '%': function (d) { return '%'; }
        },

        aggregates: {
            c: 'locale',
            D: '%m/%d/%y',
            F: '%Y-%m-%d',
            h: '%b',
            n: '\n',
            r: 'locale',
            R: '%H:%M',
            t: '\t',
            T: '%H:%M:%S',
            x: 'locale',
            X: 'locale'
            //'+': '%a %b %e %T %Z %Y'
        },

         /**
         * Takes a native JavaScript Date and formats to string for display to user.
         *
         * @method format
         * @param oDate {Date} Date.
         * @param oConfig {Object} (Optional) Object literal of configuration values:
         *  <dl>
         *   <dt>format &lt;String&gt;</dt>
         *   <dd>
         *   <p>
         *   Any strftime string is supported, such as "%I:%M:%S %p". strftime has several format specifiers defined by the Open group at
         *   <a href="http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html">http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html</a>
         *   </p>
         *   <p>
         *   PHP added a few of its own, defined at <a href="http://www.php.net/strftime">http://www.php.net/strftime</a>
         *   </p>
         *   <p>
         *   This javascript implementation supports all the PHP specifiers and a few more.  The full list is below:
         *   </p>
         *   <dl>
         *    <dt>%a</dt> <dd>abbreviated weekday name according to the current locale</dd>
         *    <dt>%A</dt> <dd>full weekday name according to the current locale</dd>
         *    <dt>%b</dt> <dd>abbreviated month name according to the current locale</dd>
         *    <dt>%B</dt> <dd>full month name according to the current locale</dd>
         *    <dt>%c</dt> <dd>preferred date and time representation for the current locale</dd>
         *    <dt>%C</dt> <dd>century number (the year divided by 100 and truncated to an integer, range 00 to 99)</dd>
         *    <dt>%d</dt> <dd>day of the month as a decimal number (range 01 to 31)</dd>
         *    <dt>%D</dt> <dd>same as %m/%d/%y</dd>
         *    <dt>%e</dt> <dd>day of the month as a decimal number, a single digit is preceded by a space (range ' 1' to '31')</dd>
         *    <dt>%F</dt> <dd>same as %Y-%m-%d (ISO 8601 date format)</dd>
         *    <dt>%g</dt> <dd>like %G, but without the century</dd>
         *    <dt>%G</dt> <dd>The 4-digit year corresponding to the ISO week number</dd>
         *    <dt>%h</dt> <dd>same as %b</dd>
         *    <dt>%H</dt> <dd>hour as a decimal number using a 24-hour clock (range 00 to 23)</dd>
         *    <dt>%I</dt> <dd>hour as a decimal number using a 12-hour clock (range 01 to 12)</dd>
         *    <dt>%j</dt> <dd>day of the year as a decimal number (range 001 to 366)</dd>
         *    <dt>%k</dt> <dd>hour as a decimal number using a 24-hour clock (range 0 to 23); single digits are preceded by a blank. (See also %H.)</dd>
         *    <dt>%l</dt> <dd>hour as a decimal number using a 12-hour clock (range 1 to 12); single digits are preceded by a blank. (See also %I.) </dd>
         *    <dt>%m</dt> <dd>month as a decimal number (range 01 to 12)</dd>
         *    <dt>%M</dt> <dd>minute as a decimal number</dd>
         *    <dt>%n</dt> <dd>newline character</dd>
         *    <dt>%p</dt> <dd>either `AM' or `PM' according to the given time value, or the corresponding strings for the current locale</dd>
         *    <dt>%P</dt> <dd>like %p, but lower case</dd>
         *    <dt>%r</dt> <dd>time in a.m. and p.m. notation equal to %I:%M:%S %p</dd>
         *    <dt>%R</dt> <dd>time in 24 hour notation equal to %H:%M</dd>
         *    <dt>%s</dt> <dd>number of seconds since the Epoch, ie, since 1970-01-01 00:00:00 UTC</dd>
         *    <dt>%S</dt> <dd>second as a decimal number</dd>
         *    <dt>%t</dt> <dd>tab character</dd>
         *    <dt>%T</dt> <dd>current time, equal to %H:%M:%S</dd>
         *    <dt>%u</dt> <dd>weekday as a decimal number [1,7], with 1 representing Monday</dd>
         *    <dt>%U</dt> <dd>week number of the current year as a decimal number, starting with the
         *            first Sunday as the first day of the first week</dd>
         *    <dt>%V</dt> <dd>The ISO 8601:1988 week number of the current year as a decimal number,
         *            range 01 to 53, where week 1 is the first week that has at least 4 days
         *            in the current year, and with Monday as the first day of the week.</dd>
         *    <dt>%w</dt> <dd>day of the week as a decimal, Sunday being 0</dd>
         *    <dt>%W</dt> <dd>week number of the current year as a decimal number, starting with the
         *            first Monday as the first day of the first week</dd>
         *    <dt>%x</dt> <dd>preferred date representation for the current locale without the time</dd>
         *    <dt>%X</dt> <dd>preferred time representation for the current locale without the date</dd>
         *    <dt>%y</dt> <dd>year as a decimal number without a century (range 00 to 99)</dd>
         *    <dt>%Y</dt> <dd>year as a decimal number including the century</dd>
         *    <dt>%z</dt> <dd>numerical time zone representation</dd>
         *    <dt>%Z</dt> <dd>time zone name or abbreviation</dd>
         *    <dt>%%</dt> <dd>a literal `%' character</dd>
         *   </dl>
         *  </dd>
         * </dl>
         * @param sLocale {String} (Optional) The locale to use when displaying days of week,
         *  months of the year, and other locale specific strings.  The following locales are
         *  built in:
         *  <dl>
         *   <dt>en</dt>
         *   <dd>English</dd>
         *   <dt>en-US</dt>
         *   <dd>US English</dd>
         *   <dt>en-GB</dt>
         *   <dd>British English</dd>
         *   <dt>en-AU</dt>
         *   <dd>Australian English (identical to British English)</dd>
         *  </dl>
         *  More locales may be added by subclassing of YAHOO.util.DateLocale.
         *  See YAHOO.util.DateLocale for more information.
         * @return {String} Formatted date for display.
         * @sa YAHOO.util.DateLocale
         */
        format : function (oDate, oConfig, sLocale) {
            oConfig = oConfig || {};

            if(!(oDate instanceof Date)) {
                return YAHOO.lang.isValue(oDate) ? oDate : "";
            }

            var format = oConfig.format || "%m/%d/%Y";

            // Be backwards compatible, support strings that are
            // exactly equal to YYYY/MM/DD, DD/MM/YYYY and MM/DD/YYYY
            if(format === 'YYYY/MM/DD') {
                format = '%Y/%m/%d';
            } else if(format === 'DD/MM/YYYY') {
                format = '%d/%m/%Y';
            } else if(format === 'MM/DD/YYYY') {
                format = '%m/%d/%Y';
            }
            // end backwards compatibility block

            sLocale = sLocale || "en";

            // Make sure we have a definition for the requested locale, or default to en.
            if(!(sLocale in YAHOO.util.DateLocale)) {
                if(sLocale.replace(/-[a-zA-Z]+$/, '') in YAHOO.util.DateLocale) {
                    sLocale = sLocale.replace(/-[a-zA-Z]+$/, '');
                } else {
                    sLocale = "en";
                }
            }

            var aLocale = YAHOO.util.DateLocale[sLocale];

            var replace_aggs = function (m0, m1) {
                var f = Dt.aggregates[m1];
                return (f === 'locale' ? aLocale[m1] : f);
            };

            var replace_formats = function (m0, m1) {
                var f = Dt.formats[m1];
                if(typeof f === 'string') {             // string => built in date function
                    return oDate[f]();
                } else if(typeof f === 'function') {    // function => our own function
                    return f.call(oDate, oDate, aLocale);
                } else if(typeof f === 'object' && typeof f[0] === 'string') {  // built in function with padding
                    return xPad(oDate[f[0]](), f[1]);
                } else {
                    return m1;
                }
            };

            // First replace aggregates (run in a loop because an agg may be made up of other aggs)
            while(format.match(/%[cDFhnrRtTxX]/)) {
                format = format.replace(/%([cDFhnrRtTxX])/g, replace_aggs);
            }

            // Now replace formats (do not run in a loop otherwise %%a will be replace with the value of %a)
            var str = format.replace(/%([aAbBCdegGHIjklmMpPsSuUVwWyYzZ%])/g, replace_formats);

            replace_aggs = replace_formats = undefined;

            return str;
        }
     };

     YAHOO.namespace("YAHOO.util");
     YAHOO.util.Date = Dt;

    /**
     * The DateLocale class is a container and base class for all
     * localised date strings used by YAHOO.util.Date. It is used
     * internally, but may be extended to provide new date localisations.
     *
     * To create your own DateLocale, follow these steps:
     * <ol>
     *  <li>Find an existing locale that matches closely with your needs</li>
     *  <li>Use this as your base class.  Use YAHOO.util.DateLocale if nothing
     *   matches.</li>
     *  <li>Create your own class as an extension of the base class using
     *   YAHOO.lang.merge, and add your own localisations where needed.</li>
     * </ol>
     * See the YAHOO.util.DateLocale['en-US'] and YAHOO.util.DateLocale['en-GB']
     * classes which extend YAHOO.util.DateLocale['en'].
     *
     * For example, to implement locales for French french and Canadian french,
     * we would do the following:
     * <ol>
     *  <li>For French french, we have no existing similar locale, so use
     *   YAHOO.util.DateLocale as the base, and extend it:
     *   <pre>
     *      YAHOO.util.DateLocale['fr'] = YAHOO.lang.merge(YAHOO.util.DateLocale, {
     *          a: ['dim', 'lun', 'mar', 'mer', 'jeu', 'ven', 'sam'],
     *          A: ['dimanche', 'lundi', 'mardi', 'mercredi', 'jeudi', 'vendredi', 'samedi'],
     *          b: ['jan', 'f&eacute;v', 'mar', 'avr', 'mai', 'jun', 'jui', 'ao&ucirc;', 'sep', 'oct', 'nov', 'd&eacute;c'],
     *          B: ['janvier', 'f&eacute;vrier', 'mars', 'avril', 'mai', 'juin', 'juillet', 'ao&ucirc;t', 'septembre', 'octobre', 'novembre', 'd&eacute;cembre'],
     *          c: '%a %d %b %Y %T %Z',
     *          p: ['', ''],
     *          P: ['', ''],
     *          x: '%d.%m.%Y',
     *          X: '%T'
     *      });
     *   </pre>
     *  </li>
     *  <li>For Canadian french, we start with French french and change the meaning of \%x:
     *   <pre>
     *      YAHOO.util.DateLocale['fr-CA'] = YAHOO.lang.merge(YAHOO.util.DateLocale['fr'], {
     *          x: '%Y-%m-%d'
     *      });
     *   </pre>
     *  </li>
     * </ol>
     *
     * With that, you can use your new locales:
     * <pre>
     *    var d = new Date("2008/04/22");
     *    YAHOO.util.Date.format(d, {format: "%A, %d %B == %x"}, "fr");
     * </pre>
     * will return:
     * <pre>
     *    mardi, 22 avril == 22.04.2008
     * </pre>
     * And
     * <pre>
     *    YAHOO.util.Date.format(d, {format: "%A, %d %B == %x"}, "fr-CA");
     * </pre>
     * Will return:
     * <pre>
     *   mardi, 22 avril == 2008-04-22
     * </pre>
     * @namespace YAHOO.util
     * @requires yahoo
     * @class DateLocale
     */
     YAHOO.util.DateLocale = {
            a: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
            A: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'],
            b: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
            B: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
            c: '%a %d %b %Y %T %Z',
            p: ['AM', 'PM'],
            P: ['am', 'pm'],
            r: '%I:%M:%S %p',
            x: '%d/%m/%y',
            X: '%T'
     };

     YAHOO.util.DateLocale['en'] = YAHOO.lang.merge(YAHOO.util.DateLocale, {});

     YAHOO.util.DateLocale['en-US'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en'], {
            c: '%a %d %b %Y %I:%M:%S %p %Z',
            x: '%m/%d/%Y',
            X: '%I:%M:%S %p'
     });

     YAHOO.util.DateLocale['en-GB'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en'], {
            r: '%l:%M:%S %P %Z'
     });
     YAHOO.util.DateLocale['en-AU'] = YAHOO.lang.merge(YAHOO.util.DateLocale['en']);

    })();

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