That sounds like unnecessary work.
Again, when you say "and whose properties were getting changed", how are they getting changed? By simple assignment? If so, then you can call the ArrayCollection.itemUpdated() method. Tracy ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Cooper Sent: Thursday, July 24, 2008 4:14 PM To: [email protected] Subject: [flexcoders] Re: Trees, DataProviders and dynamic screen updates Thanks, Tracy. What I meant was that I was adding Objects like { object:myObject } to ArrayCollection - where myObject was an instance of a proxy class - and whose properties were getting changed. I have now gone to a slightly different scheme, adding Objects like { object:mpObject, value:myObject.value } - and when 'value' property changes, I iterate through ArrayCollection, looking for match on 'object' - and, when I find that, I set 'value' to new myObject.value. This seems to trigger necessary dispatch and Tree's rendering updates. Thanks again for your help. =Eric --- In [email protected] <mailto:flexcoders%40yahoogroups.com> , "Tracy Spratt" <[EMAIL PROTECTED]> wrote: > > "...when the items referenced by the ArrayCollection change..." How is > that happening? The "items... change"? > > Tracy > > > > ________________________________ > > From: [email protected] <mailto:flexcoders%40yahoogroups.com> [mailto:[email protected] <mailto:flexcoders%40yahoogroups.com> ] On > Behalf Of Eric Cooper > Sent: Wednesday, July 23, 2008 6:24 PM > To: [email protected] <mailto:flexcoders%40yahoogroups.com> > Subject: [flexcoders] Re: Trees, DataProviders and dynamic screen > updates > > > > I am adding to and removing from ArrayCollection - and when I do that, > the Tree items > refresh and are current. But when the items referenced by the > ArrayCollection change, I > am doing nothing. > > Is there a way to "touch" the ArrayCollection so as to prompt Tree to > reload (or reevaluate) > its dataProvider and call labelFunction to generate updated rendering? > > Or is the preferred way to step walk through ArrayCollection and modify > (in place) the > changed objects? > > Thanks. > =Eric > > --- In [email protected] <mailto:flexcoders%40yahoogroups.com> <mailto:flexcoders%40yahoogroups.com> > , "Tracy Spratt" <tspratt@> wrote: > > > > If you use the ArrayCollection API to make the updates to the > > dataProvider, the changes should automatically reflect in the UI. > > > > > > > > How are you updating the ArrayCollection items? > > > > > > > > Tracy > > > > > > > > ________________________________ > > > > From: [email protected] <mailto:flexcoders%40yahoogroups.com> <mailto:flexcoders%40yahoogroups.com> > [mailto:[email protected] <mailto:flexcoders%40yahoogroups.com> <mailto:flexcoders%40yahoogroups.com> > ] On > > Behalf Of Eric Cooper > > Sent: Wednesday, July 23, 2008 3:53 PM > > To: [email protected] <mailto:flexcoders%40yahoogroups.com> <mailto:flexcoders%40yahoogroups.com> > > Subject: [flexcoders] Trees, DataProviders and dynamic screen updates > > > > > > > > Hi, > > I am trying to display changes in state for proxy objects (where > "real" > > state exists on a > > server). I have defined a Tree and set its dataProvider to be an > > ArrayCollection. I have tried > > having this be an array of references to actual proxy object and also > as > > array of dynamically > > created Objects (of form {name:foo.toString(), object:foo} > > > > Server-side events result in client being notified that properties in > > proxy object have > > changed. I would like these changes in proxy object properties to > > propagate through the > > Tree's items. > > > > I have searched docs and this forum, but not found anything that > > addresses this issue. At the > > same time, I suspect that this is something that has been discussed - > > and may simply involve > > setting some flag on the Tree or the DataProvider... > > > > Thanks for any help! > > =Eric > > >
