MediaWiki:Gadget-Countdown.js

// ==================
// Countdown 2.0, rewrite by Pecoes
// Original script by Splarka + Eladkse
// ==================

$(function (module, mw, $) {
	'use strict';

	var translations = $.extend(true, {
		en: {
			and: 'and',
			second: 'second',
			seconds: 'seconds',
			minute: 'minute',
			minutes: 'minutes',
			hour: 'hour',
			hours: 'hours',
			day: 'day',
			days: 'days'
		}
	}, module.translations || {}),
	i18n = translations[
		mw.config.get('wgContentLanguage')
	] || translations.en;

	var countdowns = [];

	var NO_LEADING_ZEROS = 1;

	function output (i, diff) {
		/*jshint bitwise:false*/
		var delta, result, parts = [];
		delta = diff % 60;
		parts.unshift(delta + ' ' + i18n[delta === 1 ? 'second' : 'seconds']);
		diff = Math.floor(diff / 60);
		delta = diff % 60;
		parts.unshift(delta + ' ' + i18n[delta === 1 ? 'minute' : 'minutes']);
		diff = Math.floor(diff / 60);
		delta = diff % 24;
		parts.unshift(delta + ' ' + i18n[delta === 1 ? 'hour'   : 'hours'  ]);
		diff = Math.floor(diff / 24);
		parts.unshift(diff  + ' ' + i18n[diff  === 1 ? 'day'	: 'days'   ]);
		result = parts.pop();
		if (countdowns[i].opts & NO_LEADING_ZEROS) {
			while (parts.length && parts[0][0] === '0') {
				parts.shift();
			}
		}
		if (parts.length) {
			result = parts.join(', ') + ' ' + i18n.and + ' ' + result;
		}
		countdowns[i].node.text(result);
	}

	function end (i) {
		var c = countdowns[i].node.parent();
		switch (c.attr('data-end')) {
			case 'remove':
				c.remove();
				countdowns.splice(i, 1);
				return;
			case 'stop':
				output(i, 0);
				countdowns.splice(i, 1);
				return;
			case 'toggle':
				var toggle = c.attr('data-toggle');
				if (toggle && $(toggle).length) {
					$(toggle).css('display', 'inline');
					c.css('display', 'none');
					countdowns.splice(i, 1);
					return;
				}
				break;
			case 'callback':
				var callback = c.attr('data-callback');
				if (callback && $.isFunction(module[callback])) {
					output(i, 0);
					countdowns.splice(i, 1);
					module[callback].call(c);
					return;
				}
				break;
		}
		countdowns[i].countup = true;
		output(i, 0);
	}

	function update () {
		var now = Date.now();
		$.each(countdowns.slice(0), function (i, countdown) {
			var diff = Math.floor((countdown.date - now) / 1000);
			if (diff <= 0 && !countdown.countup) {
				end(i);
			} else {
				output(i, Math.abs(diff));
			}
		});
		if (countdowns.length) {
			window.setTimeout(function () {
				update();
			}, 1000);
		}
	}

	function getOptions (node) {
		/*jshint bitwise:false*/
		var text = node.parent().attr('data-options'),
			opts = 0;
		if (text) {
			if (/no-leading-zeros/.test(text)) {
				opts |= NO_LEADING_ZEROS;
			}
		}
		return opts;
	}

	$(function () {
		var countdown = $('.countdown');
		if (!countdown.length) return;
		$('.nocountdown').css('display', 'none');
		countdown
		.css('display', 'inline')
		.find('.countdowndate')
		.each(function () {
			var $this = $(this),
				date = (new Date($this.text())).valueOf();
			if (isNaN(date)) {
				$this.text('BAD DATE');
				return;
			}
			countdowns.push({
				node: $this,
				opts: getOptions($this),
				date: date,
			});
		});
		if (countdowns.length) {
			update();
		}
	});
}(window.countdownTimer = window.countdownTimer || {}, mediaWiki, jQuery));