How to wrap a JS script inside an Angular directive - angularjs

Question

I am learning AngularJS and I have a conventional JS Script that I wrote a while ago and I would like to use it inside my new Angular app.
Can I literally just dump the entire script in side the directive or do I need to change some things like the keyword this to element etc...?
directive.directive("skillLevel", ['$timeout', function($timeout) {
return{
link: function(scope, el, atts){
// CAN I PASTE MY SCRIPT HERE??
}
}]);
I have this 'quite length some' script that I want to use. How would I go about effectivly using this inside my directive?
(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: null,
key: null,
layoutTemplate: '<ul>{entries}</ul>',
entryTemplate: '<li>[{author}#{date}] {title}<br/>{shortBodyPlain}</li>',
tokens: {},
outputMode: 'json',
dateFormat: 'dddd MMM 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 || {});
// The current SSL certificate is only valid for *.herokuapp.com
if (this.options.ssl && (this.options.host === 'www.feedrapp.info')) {
this.options.host = 'feedrapp.herokuapp.com';
}
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 = 'http' + (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);
}
self.appendEntriesAndApplyEffects($('entries', html.layout), html.entries);
}
if (self.effectQueue.length > 0) {
self.executeEffectQueue(self.callback);
} else if ($.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);

Answer 1

I think a better way would be to wrap that script in an angular module and load that module as a dependancy in your main app and use it anywhere you see fit.