Setting a button press on hitting the enter key from the keyboard

[vishy_sb]

I have a form inside a modal window. The form has a textfield field and a
button in it. I want to set the focus on the button when I enter something
in the textfield. I tried adding the following behaviour to the textfield
but it is not working. 

textfield.add(new AbstractBehavior(){

                        private static final long serialVersionUID = 1L;
                       
                @Override
                public void onComponentTag(Component component, ComponentTag 
tag) {
                        tag.put("onkeydown",
"if(event.keyCode==13){searchButton.click();return false;}");
                }
        }); 

Also can someone suggest a way to hook up the button in the form with the
Enter key on the keyboard so that whenever I input something in the
textfield and hit the enter key the onClick() or onSubmit() event of the
button gets fired???
 
Any help will be greatly appreciated.

Thanks,
vishy
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