SafeHtmlCell column is not firing the handler onBrowserEvent

In cell table column,i created a column of type SafeHtmlCell.Inside i overridden the getvalue()and onBrowserEvent() Method. But when i click the column its not firing the event.See the below

 @Override   public SafeHtml getValue(final Object object) {   SafeHtmlBuilder sb = new SafeHtmlBuilder();   sb.appendHtmlConstant("<B>");   sb.appendHtmlConstant(value);   sb.appendHtmlConstant("</B>");   sb.appendHtmlConstant("<i class='icon-pencil'></i></span>");   return sb.toSafeHtml();        }       @Override      public void onBrowserEvent(Context context, Element elem,                          Object object, NativeEvent event) {             if ("click".equals(event.getType())) {             EventTarget eventTarget = event.getEventTarget();              if (elem.isOrHasChild(Element.as(eventTarget))) {              Element el = Element.as(eventTarget);              if ("icon-pencil".equals(el.getClassName())) {                          Window.alert("Successfully clicked");                                                          }                                          }                              }                      }

How to solve this? Wether i need override render() Method as well?Any idea?

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