/* http://keith-wood.name/countdown.html
Countdown for jQuery v1.5.9.
Written by Keith Wood (kbwood{at}iinet.com.au) January 2008.
Dual licensed under the GPL (http://dev.jquery.com/browser/trunk/jquery/GPL-LICENSE.txt) and
MIT (http://dev.jquery.com/browser/trunk/jquery/MIT-LICENSE.txt) licenses.
Please attribute the author if you use it. */
/* Display a countdown timer.
Attach it with options like:
$('div selector').countdown(
{until: new Date(2009, 1 - 1, 1, 0, 0, 0), onExpiry: happyNewYear}); */
(function($){ // Hide scope, no $ conflict
/*
* Countdown manager.
*
*/
function Countdown(){
this.regional = []; // Available regional settings, indexed by language code
this.regional[''] = { // Default regional settings
// The display texts for the counters
labels: ['Years', 'Months', 'Weeks', 'Days', 'h', 'm', 's'],
// The display texts for the counters if only one
labels1: ['Year', 'Month', 'Week', 'Day', 'h', 'm', 's'],
compactLabels: ['y', 'm', 'w', 'd'], // The compact texts for the counters
whichLabels: null, // Function to determine which labels to use
timeSeparator: ':', // Separator for time periods
isRTL: false // True for right-to-left languages, false for left-to-right
};
this._defaults = {
until: null, // new Date(year, mth - 1, day, hr, min, sec) - date/time to count down to
// or numeric for seconds offset, or string for unit offset(s):
// 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds
since: null, // new Date(year, mth - 1, day, hr, min, sec) - date/time to count up from
// or numeric for seconds offset, or string for unit offset(s):
// 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds
timezone: null, // The timezone (hours or minutes from GMT) for the target times,
// or null for client local
serverSync: null, // A function to retrieve the current server time for synchronisation
format: 'dHMS', // Format for display - upper case for always, lower case only if non-zero,
// 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds
layout: '', // Build your own layout for the countdown
compact: false, // True to display in a compact format, false for an expanded one
significant: 0, // The number of periods with values to show, zero for all
description: '', // The description displayed for the countdown
expiryUrl: '', // A URL to load upon expiry, replacing the current page
expiryText: '', // Text to display upon expiry, replacing the countdown
alwaysExpire: false, // True to trigger onExpiry even if never counted down
onExpiry: null, // Callback when the countdown expires -
// receives no parameters and 'this' is the containing division
onTick: null, // Callback when the countdown is updated -
// receives int[7] being the breakdown by period (based on format)
// and 'this' is the containing division
tickInterval: 1 // Interval (seconds) between onTick callbacks
};
$.extend(this._defaults, this.regional['']);
this._serverSyncs = [];
}
var PROP_NAME = 'countdown';
var Y = 0; // Years
var O = 1; // Months
var W = 2; // Weeks
var D = 3; // Days
var H = 4; // Hours
var M = 5; // Minutes
var S = 6; // Seconds
$.extend(Countdown.prototype, {
/* Class name added to elements to indicate already configured with countdown. */
markerClassName: 'hasCountdown',
/* Shared timer for all countdowns. */
_timer: setInterval(function(){
$.countdown._updateTargets();
}, 980),
/* List of currently active countdown targets. */
_timerTargets: [],
/* Override the default settings for all instances of the countdown widget.
@param options (object) the new settings to use as defaults */
setDefaults: function(options){
this._resetExtraLabels(this._defaults, options);
extendRemove(this._defaults, options || {});
},
/* Convert a date/time to UTC.
@param tz (number) the hour or minute offset from GMT, e.g. +9, -360
@param year (Date) the date/time in that timezone or
(number) the year in that timezone
@param month (number, optional) the month (0 - 11) (omit if year is a Date)
@param day (number, optional) the day (omit if year is a Date)
@param hours (number, optional) the hour (omit if year is a Date)
@param mins (number, optional) the minute (omit if year is a Date)
@param secs (number, optional) the second (omit if year is a Date)
@param ms (number, optional) the millisecond (omit if year is a Date)
@return (Date) the equivalent UTC date/time */
UTCDate: function(tz, year, month, day, hours, mins, secs, ms){
if (typeof year == 'object' && year.constructor == Date) {
ms = year.getMilliseconds();
secs = year.getSeconds();
mins = year.getMinutes();
hours = year.getHours();
day = year.getDate();
month = year.getMonth();
year = year.getFullYear();
}
var d = new Date();
d.setUTCFullYear(year);
d.setUTCDate(1);
d.setUTCMonth(month || 0);
d.setUTCDate(day || 1);
d.setUTCHours(hours || 0);
d.setUTCMinutes((mins || 0) - (Math.abs(tz) < 30 ? tz * 60 : tz));
d.setUTCSeconds(secs || 0);
d.setUTCMilliseconds(ms || 0);
return d;
},
/* Convert a set of periods into seconds.
Averaged for months and years.
@param periods (number[7]) the periods per year/month/week/day/hour/minute/second
@return (number) the corresponding number of seconds */
periodsToSeconds: function(periods){
return periods[0] * 31557600 + periods[1] * 2629800 + periods[2] * 604800 +
periods[3] * 86400 +
periods[4] * 3600 +
periods[5] * 60 +
periods[6];
},
/* Retrieve one or more settings values.
@param name (string, optional) the name of the setting to retrieve
or 'all' for all instance settings or omit for all default settings
@return (any) the requested setting(s) */
_settingsCountdown: function(target, name){
if (!name) {
return $.countdown._defaults;
}
var inst = $.data(target, PROP_NAME);
return (name == 'all' ? inst.options : inst.options[name]);
},
/* Attach the countdown widget to a div.
@param target (element) the containing division
@param options (object) the initial settings for the countdown */
_attachCountdown: function(target, options){
var $target = $(target);
if ($target.hasClass(this.markerClassName)) {
return;
}
$target.addClass(this.markerClassName);
var inst = {
options: $.extend({}, options),
_periods: [0, 0, 0, 0, 0, 0, 0]
};
$.data(target, PROP_NAME, inst);
this._changeCountdown(target);
},
/* Add a target to the list of active ones.
@param target (element) the countdown target */
_addTarget: function(target){
if (!this._hasTarget(target)) {
this._timerTargets.push(target);
}
},
/* See if a target is in the list of active ones.
@param target (element) the countdown target
@return (boolean) true if present, false if not */
_hasTarget: function(target){
return ($.inArray(target, this._timerTargets) > -1);
},
/* Remove a target from the list of active ones.
@param target (element) the countdown target */
_removeTarget: function(target){
this._timerTargets = $.map(this._timerTargets, function(value){
return (value == target ? null : value);
}); // delete entry
},
/* Update each active timer target. */
_updateTargets: function(){
for (var i = this._timerTargets.length - 1; i >= 0; i--) {
this._updateCountdown(this._timerTargets[i]);
}
},
/* Redisplay the countdown with an updated display.
@param target (jQuery) the containing division
@param inst (object) the current settings for this instance */
_updateCountdown: function(target, inst){
var $target = $(target);
inst = inst || $.data(target, PROP_NAME);
if (!inst) {
return;
}
$target.html(this._generateHTML(inst));
$target[(this._get(inst, 'isRTL') ? 'add' : 'remove') + 'Class']('countdown_rtl');
var onTick = this._get(inst, 'onTick');
if (onTick) {
var periods = inst._hold != 'lap' ? inst._periods : this._calculatePeriods(inst, inst._show, this._get(inst, 'significant'), new Date());
var tickInterval = this._get(inst, 'tickInterval');
if (tickInterval == 1 || this.periodsToSeconds(periods) % tickInterval == 0) {
onTick.apply(target, [periods]);
}
}
var expired = inst._hold != 'pause' &&
(inst._since ? inst._now.getTime() < inst._since.getTime() : inst._now.getTime() >= inst._until.getTime());
if (expired && !inst._expiring) {
inst._expiring = true;
if (this._hasTarget(target) || this._get(inst, 'alwaysExpire')) {
this._removeTarget(target);
var onExpiry = this._get(inst, 'onExpiry');
if (onExpiry) {
onExpiry.apply(target, []);
}
var expiryText = this._get(inst, 'expiryText');
if (expiryText) {
var layout = this._get(inst, 'layout');
inst.options.layout = expiryText;
this._updateCountdown(target, inst);
inst.options.layout = layout;
}
var expiryUrl = this._get(inst, 'expiryUrl');
if (expiryUrl) {
window.location = expiryUrl;
}
}
inst._expiring = false;
} else if (inst._hold == 'pause') {
this._removeTarget(target);
}
$.data(target, PROP_NAME, inst);
},
/* Reconfigure the settings for a countdown div.
@param target (element) the containing division
@param options (object) the new settings for the countdown or
(string) an individual property name
@param value (any) the individual property value
(omit if options is an object) */
_changeCountdown: function(target, options, value){
options = options || {};
if (typeof options == 'string') {
var name = options;
options = {};
options[name] = value;
}
var inst = $.data(target, PROP_NAME);
if (inst) {
this._resetExtraLabels(inst.options, options);
extendRemove(inst.options, options);
this._adjustSettings(target, inst);
$.data(target, PROP_NAME, inst);
var now = new Date();
if ((inst._since && inst._since < now) ||
(inst._until && inst._until > now)) {
this._addTarget(target);
}
this._updateCountdown(target, inst);
}
},
/* Reset any extra labelsn and compactLabelsn entries if changing labels.
@param base (object) the options to be updated
@param options (object) the new option values */
_resetExtraLabels: function(base, options){
var changingLabels = false;
for (var n in options) {
if (n != 'whichLabels' && n.match(/[Ll]abels/)) {
changingLabels = true;
break;
}
}
if (changingLabels) {
for (var n in base) { // Remove custom numbered labels
if (n.match(/[Ll]abels[0-9]/)) {
base[n] = null;
}
}
}
},
/* Calculate interal settings for an instance.
@param target (element) the containing division
@param inst (object) the current settings for this instance */
_adjustSettings: function(target, inst){
var now;
var serverSync = this._get(inst, 'serverSync');
var serverOffset = 0;
var serverEntry = null;
for (var i = 0; i < this._serverSyncs.length; i++) {
if (this._serverSyncs[i][0] == serverSync) {
serverEntry = this._serverSyncs[i][1];
break;
}
}
if (serverEntry != null) {
serverOffset = (serverSync ? serverEntry : 0);
now = new Date();
} else {
var serverResult = (serverSync ? serverSync.apply(target, []) : null);
now = new Date();
serverOffset = (serverResult ? now.getTime() - serverResult.getTime() : 0);
this._serverSyncs.push([serverSync, serverOffset]);
}
var timezone = this._get(inst, 'timezone');
timezone = (timezone == null ? -now.getTimezoneOffset() : timezone);
inst._since = this._get(inst, 'since');
if (inst._since != null) {
inst._since = this.UTCDate(timezone, this._determineTime(inst._since, null));
if (inst._since && serverOffset) {
inst._since.setMilliseconds(inst._since.getMilliseconds() + serverOffset);
}
}
inst._until = this.UTCDate(timezone, this._determineTime(this._get(inst, 'until'), now));
if (serverOffset) {
inst._until.setMilliseconds(inst._until.getMilliseconds() + serverOffset);
}
inst._show = this._determineShow(inst);
},
/* Remove the countdown widget from a div.
@param target (element) the containing division */
_destroyCountdown: function(target){
var $target = $(target);
if (!$target.hasClass(this.markerClassName)) {
return;
}
this._removeTarget(target);
$target.removeClass(this.markerClassName).empty();
$.removeData(target, PROP_NAME);
},
/* Pause a countdown widget at the current time.
Stop it running but remember and display the current time.
@param target (element) the containing division */
_pauseCountdown: function(target){
this._hold(target, 'pause');
},
/* Pause a countdown widget at the current time.
Stop the display but keep the countdown running.
@param target (element) the containing division */
_lapCountdown: function(target){
this._hold(target, 'lap');
},
/* Resume a paused countdown widget.
@param target (element) the containing division */
_resumeCountdown: function(target){
this._hold(target, null);
},
/* Pause or resume a countdown widget.
@param target (element) the containing division
@param hold (string) the new hold setting */
_hold: function(target, hold){
var inst = $.data(target, PROP_NAME);
if (inst) {
if (inst._hold == 'pause' && !hold) {
inst._periods = inst._savePeriods;
var sign = (inst._since ? '-' : '+');
inst[inst._since ? '_since' : '_until'] = this._determineTime(sign + inst._periods[0] + 'y' +
sign +
inst._periods[1] +
'o' +
sign +
inst._periods[2] +
'w' +
sign +
inst._periods[3] +
'd' +
sign +
inst._periods[4] +
'h' +
sign +
inst._periods[5] +
'm' +
sign +
inst._periods[6] +
's');
this._addTarget(target);
}
inst._hold = hold;
inst._savePeriods = (hold == 'pause' ? inst._periods : null);
$.data(target, PROP_NAME, inst);
this._updateCountdown(target, inst);
}
},
/* Return the current time periods.
@param target (element) the containing division
@return (number[7]) the current periods for the countdown */
_getTimesCountdown: function(target){
var inst = $.data(target, PROP_NAME);
return (!inst ? null : (!inst._hold ? inst._periods : this._calculatePeriods(inst, inst._show, this._get(inst, 'significant'), new Date())));
},
/* Get a setting value, defaulting if necessary.
@param inst (object) the current settings for this instance
@param name (string) the name of the required setting
@return (any) the setting's value or a default if not overridden */
_get: function(inst, name){
return (inst.options[name] != null ? inst.options[name] : $.countdown._defaults[name]);
},
/* A time may be specified as an exact value or a relative one.
@param setting (string or number or Date) - the date/time value
as a relative or absolute value
@param defaultTime (Date) the date/time to use if no other is supplied
@return (Date) the corresponding date/time */
_determineTime: function(setting, defaultTime){
var offsetNumeric = function(offset){ // e.g. +300, -2
var time = new Date();
time.setTime(time.getTime() + offset * 1000);
return time;
};
var offsetString = function(offset){ // e.g. '+2d', '-4w', '+3h +30m'
offset = offset.toLowerCase();
var time = new Date();
var year = time.getFullYear();
var month = time.getMonth();
var day = time.getDate();
var hour = time.getHours();
var minute = time.getMinutes();
var second = time.getSeconds();
var pattern = /([+-]?[0-9]+)\s*(s|m|h|d|w|o|y)?/g;
var matches = pattern.exec(offset);
while (matches) {
switch (matches[2] || 's') {
case 's':
second += parseInt(matches[1], 10);
break;
case 'm':
minute += parseInt(matches[1], 10);
break;
case 'h':
hour += parseInt(matches[1], 10);
break;
case 'd':
day += parseInt(matches[1], 10);
break;
case 'w':
day += parseInt(matches[1], 10) * 7;
break;
case 'o':
month += parseInt(matches[1], 10);
day = Math.min(day, $.countdown._getDaysInMonth(year, month));
break;
case 'y':
year += parseInt(matches[1], 10);
day = Math.min(day, $.countdown._getDaysInMonth(year, month));
break;
}
matches = pattern.exec(offset);
}
return new Date(year, month, day, hour, minute, second, 0);
};
var time = (setting == null ? defaultTime : (typeof setting == 'string' ? offsetString(setting) : (typeof setting == 'number' ? offsetNumeric(setting) : setting)));
if (time) time.setMilliseconds(0);
return time;
},
/* Determine the number of days in a month.
@param year (number) the year
@param month (number) the month
@return (number) the days in that month */
_getDaysInMonth: function(year, month){
return 32 - new Date(year, month, 32).getDate();
},
/* Determine which set of labels should be used for an amount.
@param num (number) the amount to be displayed
@return (number) the set of labels to be used for this amount */
_normalLabels: function(num){
return num;
},
/* Generate the HTML to display the countdown widget.
@param inst (object) the current settings for this instance
@return (string) the new HTML for the countdown display */
_generateHTML: function(inst){
// Determine what to show
var significant = this._get(inst, 'significant');
inst._periods = (inst._hold ? inst._periods : this._calculatePeriods(inst, inst._show, significant, new Date()));
// Show all 'asNeeded' after first non-zero value
var shownNonZero = false;
var showCount = 0;
var sigCount = significant;
var show = $.extend({}, inst._show);
for (var period = Y; period <= S; period++) {
shownNonZero |= (inst._show[period] == '?' && inst._periods[period] > 0);
show[period] = (inst._show[period] == '?' && !shownNonZero ? null : inst._show[period]);
showCount += (show[period] ? 1 : 0);
sigCount -= (inst._periods[period] > 0 ? 1 : 0);
}
var showSignificant = [false, false, false, false, false, false, false];
for (var period = S; period >= Y; period--) { // Determine significant periods
if (inst._show[period]) {
if (inst._periods[period]) {
showSignificant[period] = true;
} else {
showSignificant[period] = sigCount > 0;
sigCount--;
}
}
}
var compact = this._get(inst, 'compact');
var layout = this._get(inst, 'layout');
var labels = (compact ? this._get(inst, 'compactLabels') : this._get(inst, 'labels'));
var whichLabels = this._get(inst, 'whichLabels') || this._normalLabels;
var timeSeparator = this._get(inst, 'timeSeparator');
var description = this._get(inst, 'description') || '';
var showCompact = function(period){
var labelsNum = $.countdown._get(inst, 'compactLabels' + whichLabels(inst._periods[period]));
return (show[period] ? inst._periods[period] +
(labelsNum ? labelsNum[period] : labels[period]) +
' ' : '');
};
var showFull = function(period){
var labelsNum = $.countdown._get(inst, 'labels' + whichLabels(inst._periods[period]));
return ((!significant && show[period]) || (significant && showSignificant[period]) ? '' +
inst._periods[period] +
'' + //
(labelsNum ? labelsNum[period] : labels[period]) +
'' : '');
};
return (layout ? this._buildLayout(inst, show, layout, compact, significant, showSignificant) : ((compact ? // Compact version
'' +
showCompact(Y) +
showCompact(O) +
showCompact(W) +
showCompact(D) +
(show[H] ? this._minDigits(inst._periods[H], 2) : '') +
(show[M] ? (show[H] ? timeSeparator : '') +
this._minDigits(inst._periods[M], 2) : '') +
(show[S] ? (show[H] || show[M] ? timeSeparator : '') +
this._minDigits(inst._periods[S], 2) : '') : // Full version
'' +
showFull(Y) +
showFull(O) +
showFull(W) +
showFull(D) +
showFull(H) +
showFull(M) +
showFull(S)) +
'' +
(description ? '' + description + '' : '')));
},
/* Construct a custom layout.
@param inst (object) the current settings for this instance
@param show (string[7]) flags indicating which periods are requested
@param layout (string) the customised layout
@param compact (boolean) true if using compact labels
@param significant (number) the number of periods with values to show, zero for all
@param showSignificant (boolean[7]) other periods to show for significance
@return (string) the custom HTML */
_buildLayout: function(inst, show, layout, compact, significant, showSignificant){
var labels = this._get(inst, (compact ? 'compactLabels' : 'labels'));
var whichLabels = this._get(inst, 'whichLabels') || this._normalLabels;
var labelFor = function(index){
return ($.countdown._get(inst, (compact ? 'compactLabels' : 'labels') + whichLabels(inst._periods[index])) ||
labels)[index];
};
var digit = function(value, position){
return Math.floor(value / position) % 10;
};
var subs = {
desc: this._get(inst, 'description'),
sep: this._get(inst, 'timeSeparator'),
yl: labelFor(Y),
yn: inst._periods[Y],
ynn: this._minDigits(inst._periods[Y], 2),
ynnn: this._minDigits(inst._periods[Y], 3),
y1: digit(inst._periods[Y], 1),
y10: digit(inst._periods[Y], 10),
y100: digit(inst._periods[Y], 100),
y1000: digit(inst._periods[Y], 1000),
ol: labelFor(O),
on: inst._periods[O],
onn: this._minDigits(inst._periods[O], 2),
onnn: this._minDigits(inst._periods[O], 3),
o1: digit(inst._periods[O], 1),
o10: digit(inst._periods[O], 10),
o100: digit(inst._periods[O], 100),
o1000: digit(inst._periods[O], 1000),
wl: labelFor(W),
wn: inst._periods[W],
wnn: this._minDigits(inst._periods[W], 2),
wnnn: this._minDigits(inst._periods[W], 3),
w1: digit(inst._periods[W], 1),
w10: digit(inst._periods[W], 10),
w100: digit(inst._periods[W], 100),
w1000: digit(inst._periods[W], 1000),
dl: labelFor(D),
dn: inst._periods[D],
dnn: this._minDigits(inst._periods[D], 2),
dnnn: this._minDigits(inst._periods[D], 3),
d1: digit(inst._periods[D], 1),
d10: digit(inst._periods[D], 10),
d100: digit(inst._periods[D], 100),
d1000: digit(inst._periods[D], 1000),
hl: labelFor(H),
hn: inst._periods[H],
hnn: this._minDigits(inst._periods[H], 2),
hnnn: this._minDigits(inst._periods[H], 3),
h1: digit(inst._periods[H], 1),
h10: digit(inst._periods[H], 10),
h100: digit(inst._periods[H], 100),
h1000: digit(inst._periods[H], 1000),
ml: labelFor(M),
mn: inst._periods[M],
mnn: this._minDigits(inst._periods[M], 2),
mnnn: this._minDigits(inst._periods[M], 3),
m1: digit(inst._periods[M], 1),
m10: digit(inst._periods[M], 10),
m100: digit(inst._periods[M], 100),
m1000: digit(inst._periods[M], 1000),
sl: labelFor(S),
sn: inst._periods[S],
snn: this._minDigits(inst._periods[S], 2),
snnn: this._minDigits(inst._periods[S], 3),
s1: digit(inst._periods[S], 1),
s10: digit(inst._periods[S], 10),
s100: digit(inst._periods[S], 100),
s1000: digit(inst._periods[S], 1000)
};
var html = layout;
// Replace period containers: {p<}...{p>}
for (var i = Y; i <= S; i++) {
var period = 'yowdhms'.charAt(i);
var re = new RegExp('\\{' + period + '<\\}(.*)\\{' + period + '>\\}', 'g');
html = html.replace(re, ((!significant && show[i]) ||
(significant && showSignificant[i]) ? '$1' : ''));
}
// Replace period values: {pn}
$.each(subs, function(n, v){
var re = new RegExp('\\{' + n + '\\}', 'g');
html = html.replace(re, v);
});
return html;
},
/* Ensure a numeric value has at least n digits for display.
@param value (number) the value to display
@param len (number) the minimum length
@return (string) the display text */
_minDigits: function(value, len){
value = '' + value;
if (value.length >= len) {
return value;
}
value = '0000000000' + value;
return value.substr(value.length - len);
},
/* Translate the format into flags for each period.
@param inst (object) the current settings for this instance
@return (string[7]) flags indicating which periods are requested (?) or
required (!) by year, month, week, day, hour, minute, second */
_determineShow: function(inst){
var format = this._get(inst, 'format');
var show = [];
show[Y] = (format.match('y') ? '?' : (format.match('Y') ? '!' : null));
show[O] = (format.match('o') ? '?' : (format.match('O') ? '!' : null));
show[W] = (format.match('w') ? '?' : (format.match('W') ? '!' : null));
show[D] = (format.match('d') ? '?' : (format.match('D') ? '!' : null));
show[H] = (format.match('h') ? '?' : (format.match('H') ? '!' : null));
show[M] = (format.match('m') ? '?' : (format.match('M') ? '!' : null));
show[S] = (format.match('s') ? '?' : (format.match('S') ? '!' : null));
return show;
},
/* Calculate the requested periods between now and the target time.
@param inst (object) the current settings for this instance
@param show (string[7]) flags indicating which periods are requested/required
@param significant (number) the number of periods with values to show, zero for all
@param now (Date) the current date and time
@return (number[7]) the current time periods (always positive)
by year, month, week, day, hour, minute, second */
_calculatePeriods: function(inst, show, significant, now){
// Find endpoints
inst._now = now;
inst._now.setMilliseconds(0);
var until = new Date(inst._now.getTime());
if (inst._since) {
if (now.getTime() < inst._since.getTime()) {
inst._now = now = until;
} else {
now = inst._since;
}
} else {
until.setTime(inst._until.getTime());
if (now.getTime() > inst._until.getTime()) {
inst._now = now = until;
}
}
// Calculate differences by period
var periods = [0, 0, 0, 0, 0, 0, 0];
if (show[Y] || show[O]) {
// Treat end of months as the same
var lastNow = $.countdown._getDaysInMonth(now.getFullYear(), now.getMonth());
var lastUntil = $.countdown._getDaysInMonth(until.getFullYear(), until.getMonth());
var sameDay = (until.getDate() == now.getDate() ||
(until.getDate() >= Math.min(lastNow, lastUntil) &&
now.getDate() >= Math.min(lastNow, lastUntil)));
var getSecs = function(date){
return (date.getHours() * 60 + date.getMinutes()) * 60 + date.getSeconds();
};
var months = Math.max(0, (until.getFullYear() - now.getFullYear()) * 12 + until.getMonth() - now.getMonth() +
((until.getDate() < now.getDate() && !sameDay) ||
(sameDay && getSecs(until) < getSecs(now)) ? -1 : 0));
periods[Y] = (show[Y] ? Math.floor(months / 12) : 0);
periods[O] = (show[O] ? months - periods[Y] * 12 : 0);
// Adjust for months difference and end of month if necessary
now = new Date(now.getTime());
var wasLastDay = (now.getDate() == lastNow);
var lastDay = $.countdown._getDaysInMonth(now.getFullYear() + periods[Y], now.getMonth() + periods[O]);
if (now.getDate() > lastDay) {
now.setDate(lastDay);
}
now.setFullYear(now.getFullYear() + periods[Y]);
now.setMonth(now.getMonth() + periods[O]);
if (wasLastDay) {
now.setDate(lastDay);
}
}
var diff = Math.floor((until.getTime() - now.getTime()) / 1000);
var extractPeriod = function(period, numSecs){
periods[period] = (show[period] ? Math.floor(diff / numSecs) : 0);
diff -= periods[period] * numSecs;
};
extractPeriod(W, 604800);
extractPeriod(D, 86400);
extractPeriod(H, 3600);
extractPeriod(M, 60);
extractPeriod(S, 1);
if (diff > 0 && !inst._since) { // Round up if left overs
var multiplier = [1, 12, 4.3482, 7, 24, 60, 60];
var lastShown = S;
var max = 1;
for (var period = S; period >= Y; period--) {
if (show[period]) {
if (periods[lastShown] >= max) {
periods[lastShown] = 0;
diff = 1;
}
if (diff > 0) {
periods[period]++;
diff = 0;
lastShown = period;
max = 1;
}
}
max *= multiplier[period];
}
}
if (significant) { // Zero out insignificant periods
for (var period = Y; period <= S; period++) {
if (significant && periods[period]) {
significant--;
} else if (!significant) {
periods[period] = 0;
}
}
}
return periods;
}
});
/* jQuery extend now ignores nulls!
@param target (object) the object to update
@param props (object) the new settings
@return (object) the updated object */
function extendRemove(target, props){
$.extend(target, props);
for (var name in props) {
if (props[name] == null) {
target[name] = null;
}
}
return target;
}
/* Process the countdown functionality for a jQuery selection.
@param command (string) the command to run (optional, default 'attach')
@param options (object) the new settings to use for these countdown instances
@return (jQuery) for chaining further calls */
$.fn.countdown = function(options){
var otherArgs = Array.prototype.slice.call(arguments, 1);
if (options == 'getTimes' || options == 'settings') {
return $.countdown['_' + options + 'Countdown'].apply($.countdown, [this[0]].concat(otherArgs));
}
return this.each(function(){
if (typeof options == 'string') {
$.countdown['_' + options + 'Countdown'].apply($.countdown, [this].concat(otherArgs));
} else {
$.countdown._attachCountdown(this, options);
}
});
};
/* Initialise the countdown functionality. */
$.countdown = new Countdown(); // singleton instance
})(jQuery);