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- (function ($) {
- 'use strict';
- var RSS = function (target, url, options, callback) {
- this.target = target;
- this.url = url;
- this.html = [];
- this.effectQueue = [];
- this.options = $.extend({
- ssl: false,
- host: 'www.feedrapp.info',
- limit: 3,
- key: null,
- layoutTemplate: '<div class="entries">{entries}</div>',
- entryTemplate: '<div class="one-third column"><a href="{url}"><div class="entimg">{teaserImage}</div><h5>{title}</h5><p class=snippet"">{shortBodyPlain}...</p><p><span class="author">{author}</span>{date}</p></div>',
- tokens: {},
- outputMode: 'json',
- dateFormat: 'MMMM Do',
- dateLocale: 'en',
- effect: 'show',
- offsetStart: false,
- offsetEnd: false,
- error: function () {
- console.log('jQuery RSS: url doesn\'t link to RSS-Feed');
- },
- onData: function () {},
- success: function () {}
- }, options || {});
- this.callback = callback || this.options.success;
- };
- RSS.htmlTags = [
- 'doctype', 'html', 'head', 'title', 'base', 'link', 'meta', 'style', 'script', 'noscript',
- 'body', 'article', 'nav', 'aside', 'section', 'header', 'footer', 'h1-h6', 'hgroup', 'address',
- 'p', 'hr', 'pre', 'blockquote', 'ol', 'ul', 'li', 'dl', 'dt', 'dd', 'figure', 'figcaption',
- 'div', 'table', 'caption', 'thead', 'tbody', 'tfoot', 'tr', 'th', 'td', 'col', 'colgroup',
- 'form', 'fieldset', 'legend', 'label', 'input', 'button', 'select', 'datalist', 'optgroup',
- 'option', 'textarea', 'keygen', 'output', 'progress', 'meter', 'details', 'summary', 'command',
- 'menu', 'del', 'ins', 'img', 'iframe', 'embed', 'object', 'param', 'video', 'audio', 'source',
- 'canvas', 'track', 'map', 'area', 'a', 'em', 'strong', 'i', 'b', 'u', 's', 'small', 'abbr', 'q',
- 'cite', 'dfn', 'sub', 'sup', 'time', 'code', 'kbd', 'samp', 'var', 'mark', 'bdi', 'bdo', 'ruby',
- 'rt', 'rp', 'span', 'br', 'wbr'
- ];
- RSS.prototype.load = function (callback) {
- var apiProtocol = 'https' + (this.options.ssl ? 's' : '');
- var apiHost = apiProtocol + '://' + this.options.host;
- var apiUrl = apiHost + '?callback=?&q=' + encodeURIComponent(this.url);
- // set limit to offsetEnd if offset has been set
- if (this.options.offsetStart && this.options.offsetEnd) {
- this.options.limit = this.options.offsetEnd;
- }
- if (this.options.limit !== null) {
- apiUrl += '&num=' + this.options.limit;
- }
- if (this.options.key !== null) {
- apiUrl += '&key=' + this.options.key;
- }
- $.getJSON(apiUrl, callback);
- };
- RSS.prototype.render = function () {
- var self = this;
- this.load(function (data) {
- try {
- self.feed = data.responseData.feed;
- self.entries = data.responseData.feed.entries;
- } catch (e) {
- self.entries = [];
- self.feed = null;
- return self.options.error.call(self);
- }
- var html = self.generateHTMLForEntries();
- self.target.append(html.layout);
- if (html.entries.length !== 0) {
- if ($.isFunction(self.options.onData)) {
- self.options.onData.call(self);
- }
- var container = $(html.layout).is('entries') ? html.layout : $('entries', html.layout);
- self.appendEntriesAndApplyEffects(container, html.entries);
- }
- if (self.effectQueue.length > 0) {
- self.executeEffectQueue(self.callback);
- } else if ($.isFunction(self.callback)) {
- self.callback.call(self);
- }
- });
- };
- RSS.prototype.appendEntriesAndApplyEffects = function (target, entries) {
- var self = this;
- $.each(entries, function (idx, entry) {
- var $html = self.wrapContent(entry);
- if (self.options.effect === 'show') {
- target.before($html);
- } else {
- $html.css({ display: 'none' });
- target.before($html);
- self.applyEffect($html, self.options.effect);
- }
- });
- target.remove();
- };
- RSS.prototype.generateHTMLForEntries = function () {
- var self = this;
- var result = { entries: [], layout: null };
- $(this.entries).each(function () {
- var entry = this;
- var offsetStart = self.options.offsetStart;
- var offsetEnd = self.options.offsetEnd;
- var evaluatedString;
- // offset required
- if (offsetStart && offsetEnd) {
- if (index >= offsetStart && index <= offsetEnd) {
- if (self.isRelevant(entry, result.entries)) {
- evaluatedString = self.evaluateStringForEntry(
- self.options.entryTemplate, entry
- );
- result.entries.push(evaluatedString);
- }
- }
- } else {
- // no offset
- if (self.isRelevant(entry, result.entries)) {
- evaluatedString = self.evaluateStringForEntry(
- self.options.entryTemplate, entry
- );
- result.entries.push(evaluatedString);
- }
- }
- });
- if (!!this.options.entryTemplate) {
- // we have an entryTemplate
- result.layout = this.wrapContent(
- this.options.layoutTemplate.replace('{entries}', '<entries></entries>')
- );
- } else {
- // no entryTemplate available
- result.layout = this.wrapContent('<div><entries></entries></div>');
- }
- return result;
- };
- RSS.prototype.wrapContent = function (content) {
- if (($.trim(content).indexOf('<') !== 0)) {
- // the content has no html => create a surrounding div
- return $('<div>' + content + '</div>');
- } else {
- // the content has html => don't touch it
- return $(content);
- }
- };
- RSS.prototype.applyEffect = function ($element, effect, callback) {
- var self = this;
- switch (effect) {
- case 'slide':
- $element.slideDown('slow', callback);
- break;
- case 'slideFast':
- $element.slideDown(callback);
- break;
- case 'slideSynced':
- self.effectQueue.push({ element: $element, effect: 'slide' });
- break;
- case 'slideFastSynced':
- self.effectQueue.push({ element: $element, effect: 'slideFast' });
- break;
- }
- };
- RSS.prototype.executeEffectQueue = function (callback) {
- var self = this;
- this.effectQueue.reverse();
- var executeEffectQueueItem = function () {
- var item = self.effectQueue.pop();
- if (item) {
- self.applyEffect(item.element, item.effect, executeEffectQueueItem);
- } else if (callback) {
- callback();
- }
- };
- executeEffectQueueItem();
- };
- RSS.prototype.evaluateStringForEntry = function (string, entry) {
- var result = string;
- var self = this;
- $(string.match(/(\{.*?\})/g)).each(function () {
- var token = this.toString();
- result = result.replace(token, self.getValueForToken(token, entry));
- });
- return result;
- };
- RSS.prototype.isRelevant = function (entry, entries) {
- var tokenMap = this.getTokenMap(entry);
- if (this.options.filter) {
- if (this.options.filterLimit && (this.options.filterLimit === entries.length)) {
- return false;
- } else {
- return this.options.filter(entry, tokenMap);
- }
- } else {
- return true;
- }
- };
- RSS.prototype.getFormattedDate = function (dateString) {
- // If a custom formatting function is provided, use that.
- if (this.options.dateFormatFunction) {
- return this.options.dateFormatFunction(dateString);
- } else if (typeof moment !== 'undefined') {
- // If moment.js is available and dateFormatFunction is not overriding it,
- // use it to format the date.
- var date = moment(new Date(dateString));
- if (date.locale) {
- date = date.locale(this.options.dateLocale);
- } else {
- date = date.lang(this.options.dateLocale);
- }
- return date.format(this.options.dateFormat);
- } else {
- // If all else fails, just use the date as-is.
- return dateString;
- }
- };
- RSS.prototype.getTokenMap = function (entry) {
- if (!this.feedTokens) {
- var feed = JSON.parse(JSON.stringify(this.feed));
- delete feed.entries;
- this.feedTokens = feed;
- }
- return $.extend({
- feed: this.feedTokens,
- url: entry.link,
- author: entry.author,
- date: this.getFormattedDate(entry.publishedDate),
- title: entry.title,
- body: entry.content,
- shortBody: entry.contentSnippet,
- bodyPlain: (function (entry) {
- var result = entry.content
- .replace(/<script[\\r\\\s\S]*<\/script>/mgi, '')
- .replace(/<\/?[^>]+>/gi, '');
- for (var i = 0; i < RSS.htmlTags.length; i++) {
- result = result.replace(new RegExp('<' + RSS.htmlTags[i], 'gi'), '');
- }
- return result;
- })(entry),
- shortBodyPlain: entry.contentSnippet.replace(/<\/?[^>]+>/gi, ''),
- index: $.inArray(entry, this.entries),
- totalEntries: this.entries.length,
- teaserImage: (function (entry) {
- try {
- return entry.content.match(/(<img.*?>)/gi)[0];
- }
- catch (e) {
- return '';
- }
- })(entry),
- teaserImageUrl: (function (entry) {
- try {
- return entry.content.match(/(<img.*?>)/gi)[0].match(/src="(.*?)"/)[1];
- }
- catch (e) {
- return '';
- }
- })(entry)
- }, this.options.tokens);
- };
- RSS.prototype.getValueForToken = function (_token, entry) {
- var tokenMap = this.getTokenMap(entry);
- var token = _token.replace(/[\{\}]/g, '');
- var result = tokenMap[token];
- if (typeof result !== 'undefined') {
- return ((typeof result === 'function') ? result(entry, tokenMap) : result);
- } else {
- throw new Error('Unknown token: ' + _token + ', url:' + this.url);
- }
- };
- $.fn.rss = function (url, options, callback) {
- new RSS(this, url, options, callback).render();
- return this; // Implement chaining
- };
- })(jQuery);
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