When the user selects an action to do on a file ('remove', 'thumbs', 'delete', 'trash'). there is no INFO about what he just selected.
this is what I do:
in order to do that we have to modify the file root\administrator\components\com_component\dom\html\form\input\file\default.php around the line 160, add this:
$jsRemove .= "jQuery('#". $this->getInputId('action-selected') ."').html('". JText::_("JDOM_ACTION_SELECTED") .": ". $item['text'] ."');";
around the line 179 modify the following lines:
		//Close the control		
		$html .= '</div>' .LN;
		$html .= '</div>' .LN;
		
		//MaxSize
		$html .= $this->buildMaxSize();
to:
		//Close the control		
		$html .= '</div>' .LN;
		
		//MaxSize
		$html .= $this->buildMaxSize();
		$html .= '</div>' .LN; /* hack */
 
around line 188 change the following lines:
		$html .= $this->buildFileExtensions();
		
		return $html;
and add:
		$html .= $this->buildFileExtensions();
		$html .= '<span class="action-info" id="'.  $this->getInputId('action-selected') .'"></span>'; /* hack */
		
		return $html;
 
add a bit of CSS to the css files:
.action-info {
	font-size: 80%;
	font-style: italic;
	color:green;
	font-weight: bold;
}
add language string: JDOM_ACTION_SELECTED="Action selected"
to the language files.
and we are done.