Core: Add tabindex to code blocks to enable keyboard navigation (#2799)

Author: RunDevelopment

components/prism-core.js

@@ -558,6 +558,12 @@ var _ = {
 
 		_.hooks.run('before-sanity-check', env);
 
+		// plugins may change/add the parent/element
+		parent = env.element.parentElement;
+		if (parent && parent.nodeName.toLowerCase() === 'pre' && !parent.hasAttribute('tabindex')) {
+			parent.setAttribute('tabindex', '0');
+		}
+
 		if (!env.code) {
 			_.hooks.run('complete', env);
 			callback && callback.call(env.element);

components/prism-core.min.js

@@ -73,7 +73,7 @@ <h2>
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line671">line 671</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line677">line 677</a>
     </li></ul></dd>
 
 
@@ -152,7 +152,7 @@ <h4 class="name" id=".add"><span class="type-signature">(static) </span>add<span
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line686">line 686</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line692">line 692</a>
     </li></ul></dd>
 
 
@@ -314,7 +314,7 @@ <h4 class="name" id=".run"><span class="type-signature">(static) </span>run<span
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line703">line 703</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line709">line 709</a>
     </li></ul></dd>
 
 

docs/Prism.hooks.html

@@ -263,7 +263,7 @@ <h4 class="name" id=".highlight"><span class="type-signature">(static) </span>hi
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line612">line 612</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line618">line 618</a>
     </li></ul></dd>
 
 
@@ -1157,7 +1157,7 @@ <h4 class="name" id=".tokenize"><span class="type-signature">(static) </span>tok
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line648">line 648</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line654">line 654</a>
     </li></ul></dd>
 
 

docs/Prism.html

@@ -80,7 +80,7 @@ <h4 class="name" id="Token"><span class="type-signature"></span>new Token<span c
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line737">line 737</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line743">line 743</a>
     </li></ul></dd>
 
 
@@ -364,7 +364,7 @@ <h4 class="name" id="alias"><span class="type-signature"></span>alias<span class
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line764">line 764</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line770">line 770</a>
     </li></ul></dd>
 
 
@@ -447,7 +447,7 @@ <h4 class="name" id="content"><span class="type-signature"></span>content<span c
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line756">line 756</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line762">line 762</a>
     </li></ul></dd>
 
 
@@ -524,7 +524,7 @@ <h4 class="name" id="type"><span class="type-signature"></span>type<span class="
 
     <dt class="tag-source">Source:</dt>
     <dd class="tag-source"><ul class="dummy"><li>
-        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line747">line 747</a>
+        <a href="prism-core.js.html">prism-core.js</a>, <a href="prism-core.js.html#line753">line 753</a>
     </li></ul></dd>