java - Need to prevent popup getting closed on press of esc key -

i have popup inside have selectonechoice drop down. while clicking on drop down , pressing escape key entire popup getting closed in adf. requirement prevent closing popup on press of esc key if selectonechoice selected.

i have been trying close normal popup using below code not working

window.onkeydown = function(event){     if(event.keycode == 27){         event.cancel();       } } 

i have tried out options overwrite clientlisteners popupclosed , popupcanceled didn't either.

any on how interpret esc key functionality , prevent adf popup getting closed.

each adf faces component class has javascript equivalent. popup richpopup class reflected adfrichpopup in javascript.

you can achieve supressing cancel's method in javascript object adfrichpopup:

<af:resource type="javascript">   function onpopupopened(event)   {                 var popup = event.getsource();               popup.cancel = function() {};    }  </af:resource>    <af:popup>  <af:clientlistener method="onpopupopened" type="popupopened"/> </af:popup> 

of course, means won't able use cancel() method yourself, can use hide() method instead.