glowingbear-mainbox/directives/input.html

<form class="form form-horizontal" id="inputform" ng-submit="sendMessage()" imgur-drop>
  <div class="input-group">
    <textarea id="{{inputId}}" class="form-control favorite-font" ng-trim="false" rows="1" ng-change="inputChanged()" autocomplete="on" ng-model="command" ng-focus="hideSidebar()">
    </textarea>
    <span class="input-group-btn">
      <label class="btn btn-send-image unselectable" for="imgur-upload" title="Send image">
        <i class="glyphicon glyphicon-picture"></i>
        <input type="file" accept="image/*" multiple title="Send image" id="imgur-upload" class="imgur-upload" file-change="uploadImage($event, files)">
      </label>
      <button class="btn btn-send unselectable"><i class="glyphicon glyphicon-send"></i></button>
    </span>
  </div>
  <div id="imgur-upload-progress"></div>
</form>