This might be related to the lack of a public/private focus system in
Laszlo. I'm not sure if there was an existing bug filed on it, so I went
ahead and added one:
http://www.openlaszlo.org/jira/browse/LPP-1330
-Antun
William Krick wrote:
We're trying to develop a fairly sophisticated application in laszlo.
One of the most difficult and frustrating parts is validating user input and
this may cause us to give up on laszlo entirely.
We really need the ability to stop a focus change if the contents of a field
is invalid.
In Java, this problem was solved by giving each component a
shouldYieldFocus() method.
The way this works, when any other component wants to take focus, either by
user action via keyboard or mouse, or programmatically, the focus system has
to call the current focus owner's shouldYieldFocus() method first. This
method by default just always returns true. However, you can override the
method with your own implementation that can return false if certain
conditions aren't met. Returning false prevents the focus system from
moving focus to the new component.
Laszlo really needs something similar in order for it to be viable for
"real" applications. Otherwise we might as well just go back to HTML forms
and do all our validation server-side.
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