title: How to open select box when pressing tab key?
body: <p>When pressing the <kbd>tab</kbd> key, the focus changes to another field. What I want is that, when the focus comes to a <code>&lt;select&gt;</code>, the option list is shown.</p>
  
  <p>This is working:</p>
  
  <pre><code>  &lt;div ng-controller="TypeaheadCtrl"&gt;
    &lt;input type="text" /&gt;&lt;br&gt;
      &lt;input type="text" /&gt;&lt;br&gt;
      &lt;input type="text" ng-model="selected" typeahead="state for state in states " /&gt;
  
  &lt;/div&gt;
  </code></pre>
  
  <p>This is not working:</p>
  
  <pre><code>&lt;div ng-controller="TypeaheadCtrl"&gt;
    &lt;input type="text" /&gt;&lt;br&gt;
      &lt;input type="text" /&gt;&lt;br&gt;
      &lt;!-- this is not working --&gt;
      &lt;select  ng-model="selected" &gt;
                              &lt;option value="aa"&gt;aa&lt;/option&gt;
                              &lt;option value="bb"&gt;bb&lt;/option&gt;
                          &lt;/select&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>My plunker code is <a href="http://plnkr.co/edit/2optNOlEemRvcQb1VrRX?p=preview" rel="nofollow">here</a>.</p>