Parse an argument for a symbol that requires one

Hi guys,

if you have a SimpleButtonMorph, you can decide what it should do and  
it's pretty easy. You say

self target: aTarget
actionSelector:  #someAction.

And it works. But what if not only an action should be executed, what  
if the actionSelector gets a symbol that requires an argument? In my  
case I need to change a variable first before further proceeding you  
see. So I am wondering if it is possible to do something like this:

self target: aTarget
actionSelector: #someAction: argumentRequired

I have tried many ways, including constructing the action first in  
temporary variables and then just using that temp variable as  
actionSelector string. All my efforts have been in vain. There is a  
way to solve this for me, but it would be very tedious to do and would  
increase the code volume... and that's not what I want.

If you have any ideas on this, let me know.


Thanks,
Marcus

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"Marcus Strehlow" <[hidden email]> wrote in message
news:[hidden email]...
> Hi guys,
>
> self target: aTarget
> actionSelector:  #someAction.
>
> And it works. But what if not only an action should be executed, what  if
> the actionSelector gets a symbol that requires an argument?

Marcus,

I was curious about this, so i went and got this to work: (notice the ':' in
show:)

b := ScriptableButton new openInWorld.
b target: Transcript.
b actionSelector: #show:.
b arguments: (Array with: 'test').


HTH
    -Jeroen






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[Newbies] Parse an argument for a symbol that requires
one


Hi Marcus

To get the best help, please describe the user story.
What are you trying to do?


You can give buttons arguments:
myButton target: aTarget .
myButton actionSelector:  #someAction: .
myButton arguments: Array with: myArgument .
        (You have to change #arguments: when ever the
argument changes.)

or you can use blocks as targets

myButton target: [ aTarget someAction: myArgument ]
actionSelector: value .

where myArgument could be something like
(FillinTheBlank request: 'Eh wot Marcus?')


This all seems a difficult way to achieve something.
Which is why I mention telling the story first. Then
it might be seen if what you want is better achieved
some other way.

Yours in curiosity and service, --Jerome Peace

***
>Marcus Strehlow marcus.strehlow at gmail.com
>Mon Mar 3 20:51:44 UTC 2008
>
>
>Hi guys,
>
>if you have a SimpleButtonMorph, you can decide what
it should do and  
>it's pretty easy. You say
>
>self target: aTarget
>actionSelector:  #someAction.
>
>And it works. But what if not only an action should
be executed, what  
>if the actionSelector gets a symbol that requires an
argument? In my  
>case I need to change a variable first before further
proceeding you  
>see. So I am wondering if it is possible to do
something like this:
>
>self target: aTarget
>actionSelector: #someAction: argumentRequired
>
>I have tried many ways, including constructing the
action first in  
>temporary variables and then just using that temp
variable as  
>actionSelector string. All my efforts have been in
vain. There is a  
>way to solve this for me, but it would be very
tedious to do and would  
>increase the code volume... and that's not what I
want.
>
I'm not at all sure what you are describing here.

>If you have any ideas on this, let me know.
>
>
>Thanks,
>Marcus
>
***



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Hi Jerome,
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