I have a cairngorm 2 application with a custom view that represents
an "order_item" with various properties. My ModelLocator uses an
array of value objects (of type order_item_vo) and then the
application has a series of "order_item_view" objects in the UI.
Everything works very well, *except* for one problem that I've been
struggling with for a while now. The "order_item_view" component
has 2 mx:ComboBox controls (in addition to various TextInput and
other controls). One of these ComboBox controls has a definition
like this:
<mx:ComboBox width="200" height="20" id="finish"
dataProvider="{model.order_entry_item_array.getItemAt
(item_array_offset).finish_array}"
selectedIndex="{model.order_entry_item_array.getItemAt
(item_array_offset).finish_selected_index}" change="validate_finish
()" ></mx:ComboBox>
The dataProvider is working great (pulls from an XML web service)
and everything is fine *until* you select a value in the ComboBox.
At first, everything looks fine, but then if you make a change to
any other control (change text in another TextInput, for example)
then the ComboBox reverts back to a selectedIndex = 0 (it re-selects
the first item in the box).
Here is my "validate_finish()" function:
private function validate_finish() : void
{
model.order_entry_item_array.getItemAt
(item_array_offset).finish_selected_index = finish.selectedIndex;
//finish.selectedIndex =
model.order_entry_item_array.getItemAt
(item_array_offset).finish_selected_index;
//Alert.show("3: " + finish.selectedIndex.toString() + " = "
+ model.order_entry_item_array.getItemAt
(item_array_offset).finish_selected_index);
}
I left the commented lines in there because I've tried a few things
to figure out what is going on. It seems that any time I make *any*
change to the model, the finish.SelectedIndex goes back to 0. This
happens regardless of whether or not the selectedIndex property of
the ComboBox is set to the model...finish_selected_index value,
something that I found to be *very* strange since at that point the
control was not tied to the model at all.
I can't figure out how to keep the finish.selectedIndex
from "resetting" when the model changes, and it's driving my crazy!
Any insight?
Thanks in advance!
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