[Laszlo-dev] Using 'this' within static LzNode.initialize

[Donald Anderson]

I don't see a way in the AS3 API to get from a Class instance to its  
parent Class instance.
Seems like I should emit a list of classes along with their  
superclasses.
  var classlist =  { { Foo, FooParent }, { Bar, BarParent } };
      ....
(or whatever the proper syntax).

Also it seems like we need everything to inherit from a class we  
control,
so we can put something into its constructor to catch initialization -
and eventually call initialize (?)

So I should inherit from what, LzObject?  LzSWF9Object?

Maybe this is probably something that the tag compiler should send
me a pragma about, since I probably don't want to do this for every
class in the LFC.

    #pragma lzclass
    public class foo {
    }

Tells me to insert 'extends' if missing, and to add the class/super  
to a list.
?

- Don

On Dec 14, 2007, at 10:27 AM, P T Withington wrote:

> We need to reconcile the need (in our class system) to be able to  
> get from an instance to both it's class and superclass. In the  
> current system, the constructor property of an instance is its  
> class and the constructor.prototype.constructor is its superclass.  
> That would conflict with this proposal.
>
> But maybe the answer is that we should create a new property for  
> our superclass chains.
>
> On Dec 13, 2007, at 18:33, Donald Anderson <dda at ddanderson.com> wrote:
>
>> If I'm in a static function (like initialize), I get errors when I  
>> reference 'this'.
>> Reading http://livedocs.adobe.com/flex/201/langref/ 
>> Object.html#constructor
>> it seems like we can get to the 'this' object using the prototype,  
>> provided
>> the object wasn't created with a 'constructor function'.
>>
>> Here's what I had in mind:
>>
>> // class initializer
>> static function initialize (prototype) {
>>
>>   var thisobj;
>>   if ($swf9) {
>>      thisobj = prototype.constructor;
>>   }
>>   else {
>>      thisobj = this;
>>  }
>>
>>  // Hereafter use thisobj in place of this, needed for SWF9.
>>
>>  // was:  if (this.hasOwnProperty('tagname')) ....
>>
>>   if (thisobj.hasOwnProperty('tagname')) {
>>
>> Does that seem like it would work?
>>
>> - Don
>>
>> --
>>
>> Don Anderson
>> Java/C/C++, Berkeley DB, systems consultant
>>
>> Voice:  617-547-7881
>> Email:  dda at ddanderson.com
>> WWW:    http://www.ddanderson.com
>>


--

Don Anderson
Java/C/C++, Berkeley DB, systems consultant

Voice:  617-547-7881
Email:  dda at ddanderson.com
WWW:    http://www.ddanderson.com