feat(docs): disqus integration

- add style for disqus threads in css
- add loadDisqus method to be called afterPartialLoaded
- add div container for disqus threads

Author: dandoyon

docs/src/templates/docs.css

@@ -268,7 +268,7 @@ li {
 
 /*----- content styles -----*/
 
-#content-panel {
+.content-panel {
   float: left;
   margin-top: 4em;
   margin-left: 3em;
@@ -286,16 +286,15 @@ li {
   border-radius: 15px;
 }
 
-#content-panel > h2 {
+.content-panel > h2 {
   font-size: 2em;
   font-weight: normal;
   color: #fff;
   margin: 0 4em 0 0;
   height: 1em;
 }
 
-
-#content {
+.content-panel-content {
   background-color: #fff;
   display: block;
   margin: 0.7em -1em -1em;
@@ -354,6 +353,10 @@ li {
   padding-left: 0;
 }
 
+#disqus #disqus_thread {
+  margin: 0.7em -1em -1em;
+}
+
 /* subpages */
 
 #fader {

docs/src/templates/docs.js

@@ -71,11 +71,13 @@ function DocsController($location, $window, $cookies) {
   };
 
   scope.afterPartialLoaded = function() {
+    var currentPageId = $location.path();
     scope.loading--;
     scope.partialTitle = scope.futurePartialTitle;
     SyntaxHighlighter.highlight();
     $window.scrollTo(0,0);
-    $window._gaq.push(['_trackPageview', $location.path()]);
+    $window._gaq.push(['_trackPageview', currentPageId]);
+    loadDisqus(currentPageId);
   };
 
   scope.getFeedbackUrl = function() {
@@ -105,6 +107,26 @@ function DocsController($location, $window, $cookies) {
       });
     }
   });
+
+  function loadDisqus(currentPageId) {
+    // http://docs.disqus.com/help/2/
+    window.disqus_shortname = 'angularjs';
+    window.disqus_identifier = currentPageId;
+
+    if ($location.host() == 'localhost') {
+      window.disqus_developer = 1;
+    }
+
+    // http://docs.disqus.com/developers/universal/
+    (function() {
+        var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
+      dsq.src = 'http://angularjs.disqus.com/embed.js';
+      (document.getElementsByTagName('head')[0] ||
+        document.getElementsByTagName('body')[0]).appendChild(dsq);
+    })();
+
+    angular.element(document.getElementById('disqus_thread')).html('');
+  }
 }
 
 // prevent compilation of code

docs/src/templates/index.html

@@ -114,10 +114,18 @@
     <div id="loading" ng:show="loading">Loading...</div>
 
 
-    <div id="content-panel">
+    <div class="content-panel">
       <h2 ng:bind="partialTitle"></h2>
       <a id="feedback" ng:href="{{getFeedbackUrl()}}">Report an Issue or Ask a Question</a>
-      <ng:include id="content" src="getCurrentPartial()" onload="afterPartialLoaded()"></ng:include>
+      <ng:include id="content"
+                  class="content-panel-content"
+                  src="getCurrentPartial()"
+                  onload="afterPartialLoaded()"></ng:include>
+    </div>
+
+    <div id="disqus" class="content-panel">
+      <h2>Discussion</h2>
+      <div id="disqus_thread" class="content-panel-content"></div>
     </div>
 
     <div id="footer" ng:cloak>