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view tests/focus.ur @ 1940:1484ba362062

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Add a bit of manual clarification about channels and clients
author Adam Chlipala <adam@chlipala.net>
date Wed, 25 Dec 2013 12:02:42 -0500
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>