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Protect uw_Basis_new_client_source from invalid ctx->id We assume that FFI code may create new contextes with id left unassigned
author Sergey Mironov <grrwlf@gmail.com>
date Wed, 26 Feb 2014 09:43:47 +0000
parents ffd7ed3bc0b7
children
line wrap: on
line source
fun main () : transaction page =
    id1 <- fresh;
    id2 <- fresh;
    s1 <- source "";
    s2 <- source "";
    which <- source False;

    return <xml><body>
      <ctextbox id={id1} source={s1}/>
      <ctextbox id={id2} source={s2}/>
      <button onclick={fn _ => w <- get which;
                          set which (not w);
                          giveFocus (if w then id1 else id2)}/>
    </body></xml>