That's what I've been deadling with for the past 2 days!
I won't suggest best practices, I'll just suggest what works as of 1:00pm
this afternoon.
My model is much like yours, on ModelLocator, but it's not actually written
to unless the user hits save or apply. As such, I create a copy of the
preferences object by passing the true one into a fucntion, which makes a
copy, and uses that as something to bind to. That way, all my bindings
work, but they only affect the real data if the user hits save.
Psuedo code:
prefsWindow = PopUpManager.createPopUp(this, PrefsWindow, true);
prefsWindow.setFormData(ModelLocator.prefsObject);
// psudeo code in PrefsWindow
public var formData:Object;
public function setFormData(o:Object):Void
{
// could be a specific ValueObject type as well
// just DON'T set it to null, or delete it; this'll screw up the
bindings
formData = new Object();
for(var p in o)
{
formData[p] = o[p];
}
}
public function getFormData():Object
{
return formData;
}
Then, in your main class, just replace your VO on the ModelLocator with the
formData. For avoiding references, see the earlier threads today about
Object.copy.
- Original Message -
From: charged2885 [EMAIL PROTECTED]
To: flexcoders@yahoogroups.com
Sent: Thursday, December 01, 2005 4:45 PM
Subject: [flexcoders] PreferencesWindow design pattern
Note, this example is mitigated. there are dozens of preferences i want my
users to be
able to set. Anyways
I have a simple preference i want my users to be able to set:
showConsoleWindow. I have
created a simple PreferencesWindow with a CheckBox on it. This checkbox's
selected
property is bound to ModelLocator.currentUser.preferences.showConsoleWindow.
currentUser is a UserVO object as described below:
class UserVO {
preferences:PreferencesVO;
username:String;
}
class PreferencesVO {
showConsoleWindow:Boolean;
}
I'd like to offer a cancel button to my PreferencesWindow. however, since
showConsoleWindow is bound, this approach won't work. It seems I should
first, create a
temporary preferences object to bind to. This is where my question comes in.
How do I
create a copy of my ModelLocator.currentUser.preferences object?
Or would you implement this functionality differently? Please, I'm new to
flex and I want to
do this the right way. Thanks for your time.
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