jquery.twitter-nettuts-tutorial.js

// Utility
if (typeof Object.create !== 'function') {
    Object.create = function (obj) {
		"use strict";
		function F() {}
		F.prototype = obj;
		return new F();
	};
}

(function ($, window, document, undefined) {

	var Twitter = {
		init: function (options, elem) {
			var self = this;

			self.elem = elem;
			self.$elem = $(elem);
			self.url = 'http://search.twitter.com/search.json';
			self.search = (typeof options === 'string')	? options : options.search;
			self.options = $.extend({}, $.fn.queryTwitter.options, options);
			self.refresh(1);
		},

		refresh: function (length) {
			var self = this;

			setTimeout(function () {
				self.fetch().done(function (results) {
					results = self.limit(results.results, self.options.limit);

					self.buildFrag(results);

					self.display();

					if (typeof self.options.onComplete === 'function') {
						self.options.onComplete.apply(self.elem, arguments);
					}

					if (self.options.refresh) {
						self.refresh();
					}
				});
			}, length || self.options.refresh);
		},

		fetch: function () {
			return $.ajax({
				url: this.url,
				data: { q: this.search },
				dataType: 'jsonp'
			});
		},

		buildFrag: function (results) {
			var self = this;

			self.tweets = $.map(results, function (obj, i) {
				return $(self.options.wrapEachWith).append(obj.text)[0];
			});
		},

		display: function () {
			var self = this;

			if (self.options.transition === 'none' || !self.options.transition) {
				self.$elem.html(self.tweets); // that's available??
			} else {
				self.$elem[self.options.transition](500, function () {
					$(this).html(self.tweets)[self.options.transition](500);
				});
			}
		},

		limit: function (obj, count) {
			return obj.slice(0, count);
		}
	};

	$.fn.queryTwitter = function (options) {
		return this.each(function () {
			var twitter = Object.create(Twitter);
			twitter.init(options, this);
			$.data(this, 'queryTwitter', twitter);
		});
	};

	$.fn.queryTwitter.options = {
		search: '@tutspremium',
		wrapEachWith: '<li></li>',
		limit: 10,
		refresh: null,
		onComplete: null,
		transition: 'fadeToggle'
	};

})(jQuery, window, document);