Repeater refresh bug?

Question

I am having a problem with nested Repeater controls not
refreshing properly to reflect the data that is bound to the data
provider for each of the Repeater controls. My problem is related
to the following:
I have two classes, say Parent and Child which are as
follows:
[Bindable]
public class Parent {
public var children : ArrayCollection = new
ArrayCollection();
[Bindable]
public class Child {
public var name : String = “foo”;
public var isEnabled : Boolean = true;
public var isSelected : Boolean = false;
public var enabledChildren : ArrayCollection = …;
public var disabledChildren : ArrayCollection = …;
The enabledChildren and disabledChildren collections contain
references to other Child objects that exist within the children
collection of another parent.
Then I have the following nested Repeater control structure:
<mx:Repeater id="parentRepeater"
dataProvider="{model.parents}">
<mx:Repeater id="childRepeater" dataProvider="{
parentRepeater.currentItem.options}">
<mx:CheckBox label="{childRepeater.currentItem.name}"
enabled="{childRepeater.currentItem.isEnabled}"
selected="{childRepeater.currentItem.isSelected}"
click="optionClicked(event);" />
</mx:Repeater>
</mx:Repeater>
Where model.parents references an ArrayCollection of Parent
objects.
The problem that I am having is that when a checkbox is
clicked, the optionClicked function is called, and within this
function there is logic that iterates over the enabledChildren and
disabledChildren collections of the Child object bound to the
clicked checkbox, and it sets the isEnabled and isSelected
properties of each Child object in these collections to either true
or false, depending on the current state of the checkbox that was
clicked.
However, when I do this, the checkbox controls are not
updated properly, as the enabled and/or selected state of the
checkbox does not accurately reflect the value that is stored in
the object that is bound to this control.
The only way that I am able to have the checkboxes redraw
properly is to do a manual refresh on the model.parents collection,
but doing so causes the view to flicker pretty noticeably.
Is there any way to perform this type of operation and have
all of the controls update properly without having to do the manual
refresh? I know that the data that is bound to the controls is
being updated properly, but the actual view of the controls is not
being updated.
Any help that could be offered on this matter would be
greatly appreciated.

Answer 1

"Its impossible to use a two-dimensions Array with a
Repeater. " that is not correct. It is true that you should avoid
arrays as dataPRoviders, but I see you are using an
arrayCollection, which is good. What are (dataType) the child
objects of the model.parents?
what you have is close, I don't see an obvious problem. How
are you updating the dataProvider? You must be using the Collection
API, and never the low-level array[] notation.
Tracy