for the link!
In that case, yep, have to do what Alex suggested.
As far as maintainable code, you can extend a Cairngorm Event class (or you
own), and attach a callback function to it. Your Command classes can then
call this function when they are done. This will allow the View who
dispatched the command to know when it's done, and immediately call another
one, etc.
----- Original Message -----
From: "Andrea Varga" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, April 23, 2006 1:35 PM
Subject: Re: [flexcoders] Caurngorm 2 - where to deal with system events?
I have read that using EventBroadcaster is deprecated in Cairngorm 2,
instead the built in dispatchEvent() should be used:
http://weblogs.macromedia.com/swebster/archives/2006/02/index.cfm
OT - My messages appear with several hours delay on the list. Does
anyone know why?
Andi
JesterXL wrote:
>You don't need that if you are using Cairngorm's EventBroadcaster; it has
>nothing to do with DisplayObjects. Simply do what Alex suggested in the
>result of your Command, do:
>
>EventBroadcaster.getInstance().broadcastEvent ( Event.YOUR_EVENT, {param:
>value});
>
>----- Original Message -----
>From: "Alex Uhlmann" <[EMAIL PROTECTED]>
>To: <[email protected]>
>Sent: Sunday, April 23, 2006 12:03 PM
>Subject: RE: [flexcoders] Caurngorm 2 - where to deal with system events?
>
>
>Hi Andi,
>
>You can certainly call another Command in the onResult of your
>LoginCommand. But since a Command class in not on the display list,
>events wouldn't make it to Cairngorm's FrontController. You have to use
>mx.core.Application.application.dispatchEvent. Darron Schall has a nice
>explanation of it here:
>http://www.darronschall.com/weblog/archives/000224.cfm
>
>Best,
>Alex
>
>Alex Uhlmann
>Consultant (Rich Internet Applications)
>Adobe Consulting
>Westpoint, 4 Redheughs Rigg, South Gyle, Edinburgh, EH12 9DQ, UK
>p: +44 (0) 131 338 6969
>m: +44 (0) 7917 428 951
>[EMAIL PROTECTED]
>
>
>-----Original Message-----
>From: [email protected] [mailto:[EMAIL PROTECTED] On
>Behalf Of Andrea Varga
>Sent: 23 April 2006 11:15
>To: [email protected]
>Subject: [flexcoders] Caurngorm 2 - where to deal with system events?
>
>Hi All!
>
>I have to mention that I'm new to Cairngorm and Flex.
>What is best practice to deal with system events (or whatever the events
>that are not dispatched by a user gesture are called)?
>For example: after a successful user login I have to display a list of
>products (list loded from the server).
>So, I have a login form in a component: Login.mxml, where I have a
>dispatch for the LoginEvent => the LoginCommand takes care of it...
>(goes to server etc.), the onResult method in the LoginCommand is
>called. If the login was successful, I set the
>ModelLocator.applicationState to the new state, the view is binded to
>that, so now I have the correct view (with a datagrid for example), and
>now I need the list of the products.
>But for that, I need the list of the products = the
>ProductListGetCommand must be executed which means, that somebody has to
>dispatch an event for that, but there is no user gesture here.
>Where should I place the code for dispathing the event?
>Or, is my whole logic correct?
>
>My only idea here is to place it in LoginCommand.onResult?
>
>I have tried that:
>var tmpEvent:ProductListGetEvent = new ProductListGetEvent();
>dispatchEvent( tmpEvent ); I got the error: Call to a possibly undefined
>method 'dispatchEvent'
>
>That's why I think this might not be the right place.
>
>
>I'm using Cairngorm 2.0 Flex 2.0 and AMFPHP , but I think this is not
>reallt relevant here.
>
>Thanks
>Andi
>
>
>
>
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