java - How to make datepicker cell editable? -

i using gwt datepicker cell in celltable. here onclick event , on enter event popups datepicker , set cell value date have selected. want remove selected date cell , make cell blank , workaround this?

edit:

  public void onbrowserevent(context context, element parent, date value,                               nativeevent event, valueupdater<date> valueupdater) {        super.onbrowserevent(context, parent, value, event, valueupdater);        if ("click".equals(event.gettype()))         {             valueupdater.update(null);         }   } 

from understand want delete date table cell.

one way modify constructor of datepickercelland add button clears date.

first copy com.google.gwt.cell.client.datepickercell in progect

unfortunately editors can't modified , have copy editor. (all members private)

horizontalpanel horizontalpanel = new horizontalpanel();  button button = new button("clear"); button.addclickhandler(new clickhandler() {     //@override     public void onclick(clickevent event)     {         // remember values before hiding popup.         element cellparent = lastparent;         date oldvalue = lastvalue;         object key = lastkey;         int index = lastindex;         int column = lastcolumn;         panel.hide();          // update cell , value updater.         date date = null;         setviewdata(key, date);         setvalue(new context(index, column, key), cellparent, oldvalue);         if (valueupdater != null) {           valueupdater.update(date);         }     } });  horizontalpanel.add(button);