X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/d2ee1c034911e5b42eb7ad182d90607529d741a4..d316a52151685a1b7c295baa12b73a73eabe5657:/apps/wolnelektury_core/static/js/jquery.countdown.js?ds=sidebyside diff --git a/apps/wolnelektury_core/static/js/jquery.countdown.js b/apps/wolnelektury_core/static/js/jquery.countdown.js new file mode 100644 index 000000000..f9c58d370 --- /dev/null +++ b/apps/wolnelektury_core/static/js/jquery.countdown.js @@ -0,0 +1,759 @@ +/* http://keith-wood.name/countdown.html + Countdown for jQuery v1.5.8. + 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', 'Hours', 'Minutes', 'Seconds'], + // The display texts for the counters if only one + labels1: ['Year', 'Month', 'Week', 'Day', 'Hour', 'Minute', 'Second'], + 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);