Thank you Dimitrios! Now it all makes sense to me - the key is using the Getters and Setters as the method for handling all the value assignments. Once you do that, you have all the CollectionEvents at your disposal. So I guess in some odd way, we are still using Event Broadcasting to accomplish my goals, but just not in the way that I envisioned doing it. Very nice :) Again, thanks for the wonderful advice - Mike
________________________________ From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Dimitrios Gianninas Sent: Sunday, January 14, 2007 11:29 AM To: flexcoders@yahoogroups.com Subject: RE: [flexcoders] Need primer on Events, from the List Gurus - Ok here is how I would do it. Say the ArrayCollection held notes as an example. // in command ModelLocator.getInstance().notes.addItem( mynewnote ); // view is binded <bla:MYView notes="{ModelLocator.getInstance().notes}"/> // inside the view public function set notes( values:ArrayCollection ):void { mygrid.dataProvider = values; values.addEventListener( CollectionEvent.COLLECTION_CHANGE, onCollectionChange ); } Now what will happen is the minute you add a new note to your model, the "onCollectionChange" method will be called and that will allow you to do any added operations you wish, hope that helps. Dimitrios Gianninas RIA Developer Optimal Payments Inc. ________________________________ From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mike Anderson Sent: Friday, January 12, 2007 11:03 PM To: flexcoders@yahoogroups.com Subject: RE: [flexcoders] Need primer on Events, from the List Gurus - Hello Dimitrios, I was trying to keep my post as generic as possible - which is why I didn't post specifics. In this particular instance however, I want to broadcast a Custom Event to a DataGrid residing on a Panel Control - to Scroll to the very top, whenever I add a new record to an ArrayCollection (residing in the ModelLocater). This can happen ONLY when I add a new record - and this is why I want to create a Custom Event for this. I am pushing for a Custom Event, because I don't think there is a built-in Event native to the DataGrid, that I can count on 100% of the time, to fire off ONLY when New Records are being added. The catch is, I can't dispatch the Event until I get my onResult response from the ColdFusion Server - indicating that the Database Insert was in fact successful, and that it's now okay to update the Model's ArrayCollection with the new ValueObject. Since the onResult logic resides in a Cairngorm Command Class, this is where I need to dispatch the Event from. Or at least initiate the command to dispatch the Event, which can reside in the ModelLocater - and dispatch it from there. Since all of my primary Views containing the Model-bound Controls, have a reference to the ModelLocater, I am thinking that there must be a way to dispatch these Events from the Model - and have a way for these Views to respond accordingly. If you could help me out in this regard, I really would be truly grateful. My application development, has literally come to a screeching HALT, because of me not knowing how to handle all these issues. I am tracking down every Event Broadcaster and Listener Tutorial I can get my hands on, so that I can learn more about how all this works. But in all of the examples I download and dissect, they ALL have a common View, that centralizes the code - in which it's quite easy to tie everything together. In my case, I have Views and Controls scattered all over the place - and they can be instantiated (or not be for that matter) at any given moment. I just don't know how to write code to broadcast Events in such a manner, so that each component has no prior knowledge of any other component. I hope I'm explaining all this properly... Thanks in advance, Mike ________________________________ From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Dimitrios Gianninas Sent: Friday, January 12, 2007 3:01 PM To: flexcoders@yahoogroups.com Subject: RE: [flexcoders] Need primer on Events, from the List Gurus - what "other" thing do u want to do? give an example and we can take it from there. Dimitrios Gianninas RIA Developer Optimal Payments Inc. ________________________________ From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mike Anderson Sent: Friday, January 12, 2007 1:53 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Need primer on Events, from the List Gurus - Hello All, This thread, directly relates to all the other ones I've posted recently - as I think one of my root problems, is truly understanding on how Events get propagated within an application. They say the Event model is so great, due to all the components being so loosely coupled. So either I am missing something really rudimentary here, or the Event model doesn't work the way I thought it did. In every example I've seen, for an Event Listener and Broadcaster setup to work properly, there must be a common link (like a container) between the 2 components - and then, there are the 3 key things which must be in place: The Event Listener, the Broadcaster, and the Function that gets run whenever the Event gets triggered. But what about the times, where I won't know for sure beforehand, which component I will be using at the time? Especially in a Cairngorm Application, where the Commands (which is where I desperately need to broadcast my Custom Events from) literally NEVER know where their Result Events are going to be sent. Of course, this is where the true power of Cairngorm-based Applications comes into play. All the Commands do really, is update the ModelLocater with their updated results - and because of Data Binding, the Components in the Application show the updated results. For me unfortunately, there is always much more that needs to be done, after a Result is brought back - and I need to find a way to tell my Application Components, to perform their next task (based on a Custom Event, that I broadcast). Can anybody show me how to Broadcast Events in such a manner, that they get disseminated "Application-wide"??? This way, I don't need to know beforehand, which Components will be Receiving the Events. This is the final thing on my plate that I must figure out, then I can FINALLY finish my app and find some peace in my life.... Thanks in advance, Mike AVIS IMPORTANT WARNING Ce message électronique et ses pièces jointes peuvent contenir des renseignements confidentiels, exclusifs ou légalement privilégiés destinés au seul usage du destinataire visé. 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