Thank you.
I am unclear on where the classes QueryBuilderTreeDelegate and
ReferenceDataBrowserDelegate are supposed to be.
I realize that I can implement ITreeDataDescriptor and use getChildren() to
provide the
children of any given node. What I don't know how to do is fetch a node's
child data
asynchronously from the server. getChildren() has to return something right
away, so what
does the callback function (from the asynchronous server call) do? Should it
fire an event
to the tree? If so, which one?
Dan
--- In flexcoders@yahoogroups.com, Johannes Nel johannes@... wrote:
Implement ITreeDataDescriptor and set the tree's data descriptor
thus every time you open a node you call the getChildren function of your
data descriptor
a simple example
internal class ReferenceDataDescriptor implements ITreeDataDescriptor
{
private var __delegate:QueryBuilderTreeDelegate;
public function
ReferenceDataDescriptor(delegate:QueryBuilderTreeDelegate)
{
__delegate = delegate;
}
public function getChildren(node:Object,
model:Object=null):ICollectionView
{
var referenceDataDelegate:ReferenceDataBrowserDelegate =
__delegate.referenceDataDelegate
var gt:GenericTable = GenericTable
}
then store the data i get back in a hash table
so hash['a\b'] = ArraycCOlleciton
for local caching.
On Tue, Dec 9, 2008 at 4:04 AM, dandante danda...@... wrote:
Hello,
I have a Tree control and I want to load each node's children in lazy
fashion--that is, when
the user expands a node, I want to fetch that node's children from the
server. (there is way
too much data to populate the entire tree ahead of time).
I've looked around and the closest I came to a solution is this old post:
http://www.mail-archive.com/flexcoders@yahoogroups.com/msg62360.html
This code works, but it seems that it will only modify the children of the
root nodes. It isn't
clear how to expand this code to work with a deep tree.
Does anyone have ideas on that, specifically, or on other approaches to
this problem?
Thanks
--
j:pn
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