319 lines
12 KiB
JavaScript
319 lines
12 KiB
JavaScript
/**
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the script only works on "input [type=text]"
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http://teddevito.com/demos/calendar.php
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**/
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// don't declare anything out here in the global namespace
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(function($) { // create private scope (inside you can use $ instead of jQuery)
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// functions and vars declared here are effectively 'singletons'. there will be only a single
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// instance of them. so this is a good place to declare any immutable items or stateless
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// functions. for example:
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var today = new Date(); // used in defaults
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var months = 'January,February,March,April,May,June,July,August,September,October,November,December'.split(',');
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var months = l10n_cal_month;
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var monthlengths = '31,28,31,30,31,30,31,31,30,31,30,31'.split(',');
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var dateRegEx = /^\d{1,2}\/\d{1,2}\/\d{2}|\d{4}$/;
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var yearRegEx = /^\d{4,4}$/;
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// next, declare the plugin function
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$.fn.simpleDatepicker = function(options) {
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// functions and vars declared here are created each time your plugn function is invoked
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// you could probably refactor your 'build', 'load_month', etc, functions to be passed
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// the DOM element from below
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var opts = jQuery.extend({}, jQuery.fn.simpleDatepicker.defaults, options);
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// replaces a date string with a date object in opts.startdate and opts.enddate, if one exists
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// populates two new properties with a ready-to-use year: opts.startyear and opts.endyear
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setupYearRange();
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/** extracts and setup a valid year range from the opts object **/
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function setupYearRange () {
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var startyear, endyear;
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if (opts.startdate.constructor == Date) {
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startyear = opts.startdate.getFullYear();
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} else if (opts.startdate) {
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if (yearRegEx.test(opts.startdate)) {
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startyear = opts.startdate;
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} else if (dateRegEx.test(opts.startdate)) {
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opts.startdate = new Date(opts.startdate);
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startyear = opts.startdate.getFullYear();
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} else {
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startyear = today.getFullYear();
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}
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} else {
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startyear = today.getFullYear();
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}
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opts.startyear = startyear;
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if (opts.enddate.constructor == Date) {
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endyear = opts.enddate.getFullYear();
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} else if (opts.enddate) {
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if (yearRegEx.test(opts.enddate)) {
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endyear = opts.enddate;
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} else if (dateRegEx.test(opts.enddate)) {
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opts.enddate = new Date(opts.enddate);
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endyear = opts.enddate.getFullYear();
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} else {
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endyear = today.getFullYear();
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}
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} else {
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endyear = today.getFullYear();
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}
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opts.endyear = endyear;
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}
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/** HTML factory for the actual datepicker table element **/
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// has to read the year range so it can setup the correct years in our HTML <select>
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function newDatepickerHTML () {
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var years = [];
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// process year range into an array
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for (var i = 0; i <= opts.endyear - opts.startyear; i ++) years[i] = opts.startyear + i;
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// build the table structure
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var table = jQuery('<table class="datepicker" cellpadding="0" cellspacing="0"></table>');
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table.append('<thead></thead>');
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table.append('<tfoot></tfoot>');
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table.append('<tbody></tbody>');
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// month select field
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var monthselect = '<select name="month">';
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for (var i in l10n_cal_month) monthselect += '<option value="'+i+'">'+l10n_cal_month[i]+'</option>';
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monthselect += '</select>';
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// year select field
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var yearselect = '<select name="year">';
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for (var i in years) yearselect += '<option>'+years[i]+'</option>';
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yearselect += '</select>';
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jQuery("thead",table).append('<tr class="controls"><th colspan="7"><span class="prevMonth">«</span> '+monthselect+yearselect+' <span class="nextMonth">»</span></th></tr>');
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jQuery("thead",table).append('<tr class="days"><th>'+l10n_cal_days[0]+'</th><th>'+l10n_cal_days[1]+'</th><th>'+l10n_cal_days[2]+'</th><th>'+l10n_cal_days[3]+'</th><th>'+l10n_cal_days[4]+'</th><th>'+l10n_cal_days[5]+'</th><th>'+l10n_cal_days[6]+'</th></tr>');
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jQuery("tfoot",table).append('<tr><td colspan="2"><span class="today">'+l10n_cal_today+'</span></td><td colspan="3"> </td><td colspan="2"><span class="close">'+l10n_cal_close+'</span></td></tr>');
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for (var i = 0; i < 6; i++) jQuery("tbody",table).append('<tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>');
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return table;
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}
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/** get the real position of the input (well, anything really) **/
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//http://www.quirksmode.org/js/findpos.html
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function findPosition (obj) {
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var curleft = curtop = 0;
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if (obj.offsetParent) {
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do {
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curleft += obj.offsetLeft;
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curtop += obj.offsetTop;
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} while (obj = obj.offsetParent);
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return [curleft,curtop];
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} else {
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return false;
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}
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}
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/** load the initial date and handle all date-navigation **/
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// initial calendar load (e is null)
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// prevMonth & nextMonth buttons
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// onchange for the select fields
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function loadMonth (e, el, datepicker, chosendate) {
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// reference our years for the nextMonth and prevMonth buttons
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var mo = jQuery("select[name=month]", datepicker).get(0).selectedIndex;
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var yr = jQuery("select[name=year]", datepicker).get(0).selectedIndex;
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var yrs = jQuery("select[name=year] option", datepicker).get().length;
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// first try to process buttons that may change the month we're on
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if (e && jQuery(e.target).hasClass('prevMonth')) {
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if (0 == mo && yr) {
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yr -= 1; mo = 11;
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jQuery("select[name=month]", datepicker).get(0).selectedIndex = 11;
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jQuery("select[name=year]", datepicker).get(0).selectedIndex = yr;
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} else {
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mo -= 1;
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jQuery("select[name=month]", datepicker).get(0).selectedIndex = mo;
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}
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} else if (e && jQuery(e.target).hasClass('nextMonth')) {
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if (11 == mo && yr + 1 < yrs) {
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yr += 1; mo = 0;
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jQuery("select[name=month]", datepicker).get(0).selectedIndex = 0;
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jQuery("select[name=year]", datepicker).get(0).selectedIndex = yr;
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} else {
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mo += 1;
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jQuery("select[name=month]", datepicker).get(0).selectedIndex = mo;
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}
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}
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// maybe hide buttons
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if (0 == mo && !yr) jQuery("span.prevMonth", datepicker).hide();
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else jQuery("span.prevMonth", datepicker).show();
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if (yr + 1 == yrs && 11 == mo) jQuery("span.nextMonth", datepicker).hide();
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else jQuery("span.nextMonth", datepicker).show();
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// clear the old cells
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var cells = jQuery("tbody td", datepicker).unbind().empty().removeClass('date');
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// figure out what month and year to load
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var m = jQuery("select[name=month]", datepicker).val();
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var y = jQuery("select[name=year]", datepicker).val();
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var d = new Date(y, m, 1);
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var startindex = d.getDay();
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var numdays = monthlengths[m];
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// http://en.wikipedia.org/wiki/Leap_year
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if (1 == m && ((y%4 == 0 && y%100 != 0) || y%400 == 0)) numdays = 29;
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// test for end dates (instead of just a year range)
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if (opts.startdate.constructor == Date) {
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var startMonth = opts.startdate.getMonth();
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var startDate = opts.startdate.getDate();
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}
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if (opts.enddate.constructor == Date) {
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var endMonth = opts.enddate.getMonth();
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var endDate = opts.enddate.getDate();
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}
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// walk through the index and populate each cell, binding events too
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for (var i = 0; i < numdays; i++) {
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var cell = jQuery(cells.get(i+startindex)).removeClass('chosen');
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// test that the date falls within a range, if we have a range
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if (
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(yr || ((!startDate && !startMonth) || ((i+1 >= startDate && mo == startMonth) || mo > startMonth))) &&
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(yr + 1 < yrs || ((!endDate && !endMonth) || ((i+1 <= endDate && mo == endMonth) || mo < endMonth)))) {
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cell
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.text(i+1)
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.addClass('date')
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.hover(
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function () { jQuery(this).addClass('over'); },
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function () { jQuery(this).removeClass('over'); })
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.click(function () {
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var chosenDateObj = new Date(jQuery("select[name=year]", datepicker).val(), jQuery("select[name=month]", datepicker).val(), jQuery(this).text());
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closeIt(el, datepicker, chosenDateObj);
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});
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// highlight the previous chosen date
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if (i+1 == chosendate.getDate() && m == chosendate.getMonth() && y == chosendate.getFullYear()) cell.addClass('chosen');
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}
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}
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}
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/** closes the datepicker **/
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// sets the currently matched input element's value to the date, if one is available
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// remove the table element from the DOM
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// indicate that there is no datepicker for the currently matched input element
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function closeIt (el, datepicker, dateObj) {
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if (dateObj && dateObj.constructor == Date)
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el.val(jQuery.fn.simpleDatepicker.formatOutput(dateObj));
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datepicker.remove();
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datepicker = null;
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jQuery.data(el.get(0), "simpleDatepicker", { hasDatepicker : false });
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}
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// iterate the matched nodeset
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return this.each(function() {
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// functions and vars declared here are created for each matched element. so if
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// your functions need to manage or access per-node state you can defined them
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// here and use $this to get at the DOM element
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if ( jQuery(this).is('input') && 'text' == jQuery(this).attr('type')) {
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var datepicker;
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jQuery.data(jQuery(this).get(0), "simpleDatepicker", { hasDatepicker : false });
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// open a datepicker on the click event
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jQuery(this).click(function (ev) {
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var $this = jQuery(ev.target);
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if (false == jQuery.data($this.get(0), "simpleDatepicker").hasDatepicker) {
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// store data telling us there is already a datepicker
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jQuery.data($this.get(0), "simpleDatepicker", { hasDatepicker : true });
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// validate the form's initial content for a date
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var initialDate = $this.val();
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if (initialDate && dateRegEx.test(initialDate)) {
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var chosendate = new Date(initialDate);
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} else if (opts.chosendate.constructor == Date) {
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var chosendate = opts.chosendate;
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} else if (opts.chosendate) {
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var chosendate = new Date(opts.chosendate);
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} else {
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var chosendate = today;
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}
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// insert the datepicker in the DOM
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datepicker = newDatepickerHTML();
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jQuery("body").prepend(datepicker);
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// position the datepicker
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var elPos = findPosition($this.get(0));
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var x = (parseInt(opts.x) ? parseInt(opts.x) : 0) + elPos[0];
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var y = (parseInt(opts.y) ? parseInt(opts.y) : 0) + elPos[1];
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jQuery(datepicker).css({ position: 'absolute', left: x, top: y });
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// bind events to the table controls
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jQuery("span", datepicker).css("cursor","pointer");
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jQuery("select", datepicker).bind('change', function () { loadMonth (null, $this, datepicker, chosendate); });
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jQuery("span.prevMonth", datepicker).click(function (e) { loadMonth (e, $this, datepicker, chosendate); });
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jQuery("span.nextMonth", datepicker).click(function (e) { loadMonth (e, $this, datepicker, chosendate); });
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jQuery("span.today", datepicker).click(function () { closeIt($this, datepicker, new Date()); });
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jQuery("span.close", datepicker).click(function () { closeIt($this, datepicker); });
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// set the initial values for the month and year select fields
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// and load the first month
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jQuery("select[name=month]", datepicker).get(0).selectedIndex = chosendate.getMonth();
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jQuery("select[name=year]", datepicker).get(0).selectedIndex = Math.max(0, chosendate.getFullYear() - opts.startyear);
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loadMonth(null, $this, datepicker, chosendate);
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}
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});
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}
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});
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};
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// finally, I like to expose default plugin options as public so they can be manipulated. one
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// way to do this is to add a property to the already-public plugin fn
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jQuery.fn.simpleDatepicker.formatOutput = function (dateObj) {
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return (dateObj.getMonth() + 1) + "/" + dateObj.getDate() + "/" + dateObj.getFullYear();
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};
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jQuery.fn.simpleDatepicker.defaults = {
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// date string matching /^\d{1,2}\/\d{1,2}\/\d{2}|\d{4}$/
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chosendate : today,
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// date string matching /^\d{1,2}\/\d{1,2}\/\d{2}|\d{4}$/
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// or four digit year
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startdate : today.getFullYear(),
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enddate : today.getFullYear() + 1,
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// offset from the top left corner of the input element
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x : 1, // must be in px
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y : 18 // must be in px
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};
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})(jQuery);
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// Init the form
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$(document).ready(function(){
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$('#date_first').simpleDatepicker({startdate: 2005, enddate: 2100});
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$('#date_second').simpleDatepicker({startdate: 2005, enddate: 2100});
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$('#date_filter').change(function(){
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var show = $(this).val() == 'between' ? 'inline' : 'none';
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$('#date_second').css('display', show);
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$('#date_and').css('display', show);
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});
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}); |