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Re: Force sub-component to re-grab its bindings
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Re: Force sub-component to re-grab its bindings


  • Subject: Re: Force sub-component to re-grab its bindings
  • From: Chuck Hill <email@hidden>
  • Date: Fri, 29 Feb 2008 17:10:34 -0800


On Feb 29, 2008, at 5:01 PM, Baiss Eric Magnusson wrote:

I have a sub-component <MonthDayYear>.

In Awake of that sub-component I call <pullValuesFromParent> if I can.
		if (  value == null && canGetValueForBinding( "value" )) {
			pullValuesFromParent();
			value = (NSTimestamp)valueForBinding( "value" );

When I Submit in the Main Component, the Action method of the submit button is called after <Awake> in the sub-component, therefore the sub-component does not get the right bindings.

As I see below, after cloning and adding a week, the sub-component has the old binding:

Awakening MonthDayYear 2007-02-12 03:00:00 Etc/GMT
Dumping editEvent.eventDate in StartEdit- > 2007-02-19 03:00:00 Etc/ GMT

I am trying, and failing, to understand why you need or want that code in awake. I can't think of any time that I ever explicitly called pullValuesFromParent(). Try taking all of that out of awake, and add this method:


public NSTimestamp value() {
return canGetValueForBinding( "value" ) ? NSTimestamp)valueForBinding( "value" ) : null;
}


I am not even sure about the canGetValueForBinding for check. That seems more like it should be a design time check driven by the API. Or at least should throw a RuntimeException if it returns false.

Chuck


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 >Force sub-component to re-grab its bindings (From: Baiss Eric Magnusson <email@hidden>)

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