[Arp] arpx - > CommandControl

Fri Dec 22 05:56:55 PST 2006

Nyls, you mentioned you thought that putting the event to command
mapping in an xml document and I agree if your application doesn't
change much... We have cases where a command / event is mapped
differently depending on where its deployed, for example sometimes my
authentiation function will do simple authentication to a file (in
testing) and then authenticate to a database in production, I could put
code in my application with a swtich but using the xml document lets we
swap out commands at runtime.  I also don't use imports on the commands
to force them into the swf, I use the -pack option of MTASC to include
my commands folder on my classpath.

I think if your applications event to command mapping doesn't change
very often then you are correct, its easier not to use the xml.

I've used arp and arpx on about 10 major projects now and its really
good, so thanks to Aral and the arp community!  :)

Cheers,
Grant

...........................................
> b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
> grant at bluetube.com
> http://www.bluetube.com/bti <http://www.bluetube.com/bti> 
> A Tribal Chicken Designs Affiliate <http://www.tribalchicken.com/> 

________________________________

From: arp-bounces at ariaware.com [mailto:arp-bounces at ariaware.com] On
Behalf Of nyls
Sent: Friday, December 22, 2006 7:51 AM
To: 'General List for Ariaware RIA Platform users and developers'
Subject: Re: [Arp] arpx - > CommandControl

Hello 

Here are a few extensions/ extra classes I am using, with some real good
tutorials to go with it.. 

-          Appsettings : singleton which can load application props from
an XML  >Christophe Herreman
http://www.herrodius.com/blog/?p=26

-          LocaleManager: localization multi-lingual user interfaces
>Christophe Herreman   
http://www.herrodius.com/blog/?cat=9

-          CommandController/ SystemController >> Grant Davies
http://theresidentalien.typepad.com/ginormous/2005/10/extending_arp.html

-          StageManager: wrapper for the Stage class >Christophe
Herreman   

During Christmas break (YESS)  I will wrap some of the above classes in
the Pizza Example .

nyls

________________________________

Van: arp-bounces at ariaware.com [mailto:arp-bounces at ariaware.com] Namens
Michiel van der Ros
Verzonden: Thursday, December 21, 2006 12:34 PM
Aan: General List for Ariaware RIA Platform users and developers
Onderwerp: Re: [Arp] arpx - > CommandControl

Totally agree. Studying the source of a working example is probably the
best way to understand concepts and patterns like this. I couldn't have
learned ARP without Aral's Pizza Service ;-)

@Sander: Nice to see others in Amsterdam working with ARP!

COLIN LIGHT wrote: 

 Hi Guys,

It Would be nice to consolidate some of these ideas into one working
example like Aral's Pizza RIA. It would really help and hopefully speed
up understanding for people like myself.

Col. 

Sander Wichers <sander at qi-ideas.com> <mailto:sander at qi-ideas.com>
wrote:

	Nyls is talking about me :), so here is my (grants) stripped
	commandcontroller:

	Adding mappings:

CommandController.getInstance().addEventMapping(EventNames.FOO_REQUEST,
	"com.foo.command.GetFooCommand", com.foo.command.GetFooCommand);

	I prefer to use the commandcontroller instead of the
systemcontroller,
	so dispatching would be something like this:
	CommandController.getInstance().dispatchEvent({type:
	EventNames.FOO_REQUEST, target: this});

	-- Sander

	import mx.utils.Delegate;
	import mx.events.EventDispatcher;

	import com.ariaware.arp.CommandTemplate;

	class com.foo.CommandController
	{
	private static var instance : CommandController = null;

	private var eventCommandMap : Object;

	public var addEventListener : Function;
	public var removeEventListener : Function;
	public var dispatchEvent : Function;

	private function CommandController() 
	{
	EventDispatcher.initialize(this);

	this.eventCommandMap = new Object();
	}

	public static function getInstance() : CommandController 
	{
	if (!instance)
	{
	instance = new CommandController();
	}
	return instance;
	}

	public function addEventMapping(event : String, cmd : String,
	classRef : Function) : Void
	{
	// dynamically create a command:
	var command : Function = eval("_global." + cmd);

	if (command == null)
	{
	trace("CommandController:addEventMapping() Could
	not create instance for command [" + cmd + "] make sure the
command is
	FORCED into your swf file.");
	}

	if (!this.eventCommandMap [ event ])
	{
	this.eventCommandMap [ event ] = command;
	this.addEventListener(event, this);
	}
	}

	private function handleEvent(event:Object) : Void
	{
	var cmd : CommandTemplate;

	if ((cmd = this.eventCommandMap[event.type]) != null)
	{
	var theCommand : Object = new cmd();

	// Execute the command 
	theCommand.execute( event.target );
	}
	else
	{
	trace("CommandController:handleEvent() Could not
	find command for event " + event.type); 
	}
	}

	} 

	________________________________

	From: arp-bounces at ariaware.com [mailto:arp-bounces at ariaware.com]
On
	Behalf Of henrik weber (freemind-design)
	Sent: donderdag 21 december 2006 11:25
	To: General List for Ariaware RIA Platform users and developers
	Subject: [Arp] arpx - > CommandControl

	hi nyls,

	this sounds really interesting; totally failed to notice the
	CommandControl-class.
	your college absolutely has a point... could someone sketch how
we could
	use it this way?

	@colin: grant explained his thoughts about arpx pretty detailed
here ->

http://theresidentalien.typepad.com/ginormous/2005/10/extending_arp.html

	hth

	henrik

	--
	_______freemind design_______
	MediaDesign & FlashDevelopment
	home: www.freemind-design.de

	nyls wrote: 

	Yeps, 

	I use the CommandControl class, it just binds commands
	to events .. I think it is more elegant then the original ARP
controller
	.. speaking with my new upcoming college :> he made his point
that it is
	maybe a little overkill to use an external XML file for mapping
commands
	to events, why not do the 'binding' in the command controller
class
	itself. You need to 'import' the commands anyway (forceImport
for
	compiling) 

	nyls

	________________________________

	Van: arp-bounces at ariaware.com
	[mailto:arp-bounces at ariaware.com] Namens COLIN LIGHT
	Verzonden: Wednesday, December 20, 2006 5:32 PM
	Aan: General List for Ariaware RIA Platform users and developers
	Onderwerp: Re: [Arp] Another ModelLocator Question

	Hi Nyls,

	I've just been looking at Grants arpx classes. Can you
	tell me do you use his CommandControl class? from what I can
make out
	brings in commands from the 'command-config.xml'

	Col.

	COLIN LIGHT 
	wrote:

	Hi Nyls,

	Thanks again for getting back to me.

	Yeah this does make sense. I've been
	getting a little muddled up cos I downloaded Grants arpx (which
doesn't
	seem to contain a ModelLocator) and christophes version which
seems
	slightly different with a modelLocator with binding etc.

	Col.

	nyls wrote:

	Hey,

	The modellocator (ML) is
	a singleton so there is only one instance of it in your app.
This is
	your single entry point to your data/ models from everywhere in
your
	app. 

	I tend to use the ARPX
	-systemcontroller from Grant , So I let views listen to the
	systemcontroller for 'update' events.

	So when a command get's
	it's result it fills a model through the ML and dispatches an
	systemEvent

ModelLocator.getInstance().setModel(ModelNames.NAVIGATION_MODEL,OCLiteVO
	(response.ocliteVO));

SystemController.getInstance().dispatchEvent({type:EventNames.NAVIGATION
	_MODEL_CHANGE})

	And in the appropriate
	views I listen for thos system events and grab the model from
the
	modellocator

SystemController.getInstance().addEventListener(EventNames.NAVIGATION_MO
	DEL_CHANGE, Proxy.create(this, navigationModelChanged));

	var navModel =

ModelLocator.getInstance().getModel(ModelNames.NAVIGATION_MODEL).getValu
	e();

	That's how I do it,

	Is this of help ??

	nyls

	________________________________

	Van:
	arp-bounces at ariaware.com [mailto:arp-bounces at ariaware.com]
Namens COLIN
	LIGHT
	Verzonden: Wednesday, December 20, 2006 2:37 PM
	Aan: arp at ariaware.com
	Onderwerp: [Arp] Another ModelLocator Question

	Hi List, 

	I'm (as ever) hoping
	someone can help me out with an ARP issue. I've been using arp
for a few
	months now and just when I think I'm get it something else comes
along
	and I question my own understanding :(

	I've been looking at the
	ModelLocator pattern, I have read previous post's about this and
found
	some sample files although it does seem a little confusing. I
downloaded
	the arpx classes 
http://www.herrodius.com/upload/arp_extensions.zip
	which contain quite a comprehensive version with databinding
etc, I've
	also seen and much simpler single class version which I have
been trying
	to use.

	I have a number of
	ArpForms which compose my views. Within these forms are other
Arpforms
	which effectively are like components.

	What I'm struggling with
	is how to populate mx components in my component forms, is it
good
	practice to import my modelLocator class and then have an update
method
	which gets called from the main application class when the model
gets
	populate or create a listener on each form for update events
from the
	modelLocator? 

	Col.

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