Thanks -- yeah it seems like the something's happening on the stomp / callback
before it's getting to me.
Have another quickie about itemrenderers and factory properties, but going to
ask on another thread.
On Sep 22, 2011, at 2:11 PM, Alex Harui wrote:
>
>
> IMHO anonymous functions are way more trouble than they are worth. If I had
> the time, I would eliminate them from all framework code.
>
> Looks from the stacktrace that someone is using apply() to change the this
> pointer.
>
>
> On 9/22/11 10:46 AM, "grimmwerks" <gr...@grimmwerks.com> wrote:
>
>>
>>
>>
>>
>>
>> Not getting an error, just getting ignored and the function is never called.
>>
>>
>> var scope:Object = this;
>> private var echoOrderCacheEvent:Function = function(jstr:String):void{
>> Alert.show(this);
>> trace(scope);
>>
>> }
>>
>> I've tried the old pass through - but it's definitely not working properly;
>> the 'this' that's getting called within the function is NOT the function -
>> it's a SubscriptionListener in the stomp framework as that's what's calling
>> the callback through the interface; something another dev has created and
>> just want to come back with enough ammunition that the callbacks aren't
>> being set properly:
>>
>> It seems to me that he's creating another anonymous function as part of the
>> stomp dispatching and then everything is getting lost:
>>
>> ReferenceError: Error #1069: Property com.investlab.mix.common.model::scope
>> not found on interbahn.SubscriptionListener and there is no default value.
>> at
>> Function/<anonymous>()[/Users/grimm/Documents/__WORK/__INVESTLAB/MIX/src/com/investlab/mix/common/model/OrderProxyNew.as:142]
>> at
>> interbahn::SubscriptionListener/apply()[C:\transfer\IdeaProjects\as3-interbahn\main\as3\src\interbahn\SubscriptionListener.as:59]
>> at
>> Function/<anonymous>()[C:\transfer\IdeaProjects\as3-interbahn\main\as3\src\interbahn\stomp\StompConnection.as:35]
>> at flash.events::EventDispatcher/dispatchEventFunction()
>> at flash.events::EventDispatcher/dispatchEvent()
>> at
>> org.codehaus.stomp::Stomp/dispatchFrame()[/Users/grimm/Documents/__WORK/__INVESTLAB/MIX/src/org/codehaus/stomp/Stomp.as:350]
>> at
>> org.codehaus.stomp::Stomp/processFrame()[/Users/grimm/Documents/__WORK/__INVESTLAB/MIX/src/org/codehaus/stomp/Stomp.as:326]
>> at
>> org.codehaus.stomp::Stomp/onData()[/Users/grimm/Documents/__WORK/__INVESTLAB/MIX/src/org/codehaus/stomp/Stomp.as:312]
>>
>>
>>
>> On Sep 22, 2011, at 1:32 PM, Alex Harui wrote:
>>
>>>
>>>
>>> I don’t know why passing in echoEvent wouldn’t work. What error did you
>>> get?
>>>
>>> Another options are to pass in a third parameter as the object for use in
>>> call or apply.
>>>
>>> You can theoretically do this as well in the constructor of the class:
>>> Public function MyClassConstructor()
>>> {
>>> var thisObject:Object = this;
>>> echoOrderCacheEvent = function(jstr:String):void{
>>> trace(thisObject); // use ‘thisObject’ instead of ‘this’
>>> }
>>> }
>>>
>>>
>>> On 9/22/11 9:50 AM, "grimmwerks" <gr...@grimmwerks.com> wrote:
>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> OK I don't mean to make this a bit convoluted - but I guess the basics of
>>>> the question is regarding using anonymous functions within a member class
>>>> and being able to set variables within that member class.
>>>>
>>>> The convoluted question is this: I've got in my app an Interface class
>>>> that has pointers to scala/java functions and are passed in callbacks like
>>>> so:
>>>>
>>>>
>>>>
>>>> function echoOrderEvent(callback:Function):void ;
>>>>
>>>> [UriParams(p1="correlationId")]
>>>> function echoOrderCacheEvent(callback:Function,extension:Object):void ;
>>>> &n! bsp;
>>>>
>>>>
>>>> Now in my class I create vars as functions for callbacks like so:
>>>>
>>>> private var echoOrderCacheEvent:Function = function(jstr:String):void{
>>>> Alert.show("GOT ORDER EVENT ");
>>>> }
>>>>
>>>> I set up the call back to this function as such:
>>>>
>>>> interfaceClass.echoOrderCacheEvent(echoOrderCacheEvent, {correlationId:
>>>> sessionId});
>>>> !
>>>> ! ;
>>>> Now, this works great except in the anonymous function I don't have any
>>>> access to the public or private member vars of the class - only of course
>>>> if I make the vars static, which is not what I want to do.
>>>>
>>>> What I *can't* figure out is how to make the callback a regular member
>>>> function such as:
>>>>
>>>> public function echoEvent(str:String):void{
>>>> blah blah
>>>> }
>>>>
>>>> And have that work with the interface class --
>>>> asinterfaceClass.echoOrderCacheEvent(echoEvent, {correlationId:
>>>> sessionId}) won't work; what I was thinking was perhaps .call or .apply
>>>> methods but not sure how best to use them here...
>>>>
>>>>
>>>>
>>>> Garry Schafer
>>>> grimmwerks
>>>> gr...@grimmwerks.com
>>>> portfolio: www.grimmwerks.com/ <http://www.grimmwerks.com/>
>>>> <http://www.grimmwerks.com/>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>
> --
> Alex Harui
> Flex SDK Team
> Adobe System, Inc.
> http://blogs.adobe.com/aharui
>
>
>
Garry Schafer
grimmwerks
gr...@grimmwerks.com
portfolio: www.grimmwerks.com/
