add twitter via support

README.md

@@ -92,6 +92,7 @@ Make sure you have installed the [Grunt CLI](http://gruntjs.com/getting-started#
 | `data-referrer-track` | A string that will be appended to the share url. Can be disabled using `null`. | `null` |
 | `data-services`   | An entity-encoded JSON string containing an array of service names to be enabled. Example: `data-services="["facebook","googleplus"]"` Available service names: `twitter`, `facebook`, `googleplus`, `mail`, `info` | (all enabled) |
 | `data-theme`       | We include two color schemes, `standard` or `grey`. | `standard` |
+| `data-twitter-via` | Screen name of the user to attribute the Tweet to | `null` |
 | `data-url`         | The canonical URL of the page to check. | page's canonical URL or `og:url` or current URL |
 
 ## Backends

demo/index.html

@@ -50,12 +50,13 @@ <h1>Lorem ipsum dolor sit amet, consectetuer adipiscing elit</h1>
         <dt>data-orientation:</dt><dd>default</dd>
         <dt>data-services:</dt><dd>default</dd>
         <dt>data-theme:</dt><dd>grey</dd>
+        <dt>data-twitter-via:</dt><dd>heiseonline</dd>
         <dt>data-url:</dt><dd>http://www.heise.de/ct/</dd>
     </dl>
     <article class="slim">
         <header>
             <h1>Lorem ipsum dolor sit amet, consectetuer adipiscing elit</h1>
-            <div data-backend-url="/shariff/" data-theme="grey" data-lang="en" class="shariff" data-url="http://www.heise.de/ct/" data-info-url="http://example.com"></div>
+            <div data-backend-url="/shariff/" data-theme="grey" data-lang="en" class="shariff" data-url="http://www.heise.de/ct/" data-info-url="http://example.com" data-twitter-via="heiseonline"></div>
             <time datetime="2014-11-13T10:45:00+02:00">13.11.2014 - 12:45 Uhr</time>
         </header>
         <p class="deck">Even the all-powerful Pointing has no control about the blind texts it is an almost unorthographic life One day however a small line of blind text by the name of Lorem Ipsum decided to leave for the far World of Grammar.</p>

src/js/services/twitter.js

@@ -1,7 +1,18 @@
 'use strict';
 
+var url = require('url');
+
 module.exports = function(shariff) {
-    var url = encodeURIComponent(shariff.getURL());
+    var shareUrl = url.parse('https://twitter.com/intent/tweet', true);
+
+    // TODO FIXME: remove "encodeURIComponent()" from getShareText()
+    shareUrl.query.text = decodeURIComponent(shariff.getShareText());
+    shareUrl.query.url = shariff.getURL();
+    if (typeof shariff.options.twitterVia !== null) {
+        shareUrl.query.via = shariff.options.twitterVia;
+    }
+    delete shareUrl.search;
+
     return {
         popup: true,
         shareText: 'tweet',
@@ -12,6 +23,7 @@ module.exports = function(shariff) {
             'en': 'Share on Twitter',
             'es': 'Compartir en Twitter'
         },
-        shareUrl: 'https://twitter.com/intent/tweet?text='+ shariff.getShareText() + '&url=' + url + shariff.getReferrerTrack()
+        // shareUrl: 'https://twitter.com/intent/tweet?text='+ shariff.getShareText() + '&url=' + url
+        shareUrl: url.format(shareUrl) + shariff.getReferrerTrack()
     };
 };

src/js/shariff.js

@@ -67,6 +67,8 @@ _Shariff.prototype = {
         // services to be enabled in the following order
         services   : ['twitter', 'facebook', 'googleplus', 'info'],
 
+        twitterVia: null,
+
         // build URI from rel="canonical" or document.location
         url: function() {
             var url = global.document.location.href;