Re: widgets plan proposal

On Wednesday, April 2, 2003, at 02:52  AM, Charles Goodwin wrote:
> So the behaviour either has to assume the preapply of focus or be with 
> the
> preapply of focus.

This is where using traps/variables over functions makes this trait a 
powerful tool. Our core widgets without the proper preapply's (like 
xwt.theme.radiobutton) can assume they preapply focus. They might have 
traps like:

_keypress = function(k) { ... tricky stuff here ...}
_focused = function(k) { ... }

xwt.widget.radiobutton preapplies focusable, and suddenly all of this 
inactive code starts working.

However, a widget developer can use xwt.theme.radiobutton directly. 
They have access to all the functionality of these, but it only runs 
when they tell it to.

<template>
	<xwt.theme.radiobutton id="spec"/>
	_keypress = function(k) { if (myspecialcase) $spec.keypress = k; }
</template>

This is what I perceive to be the power of trap/function based control, 
and a reason to separate the preapply's. Removing one or two adjectives 
can leave all the functionality, but take all the automatic behavior.

d


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