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Amber Milan Eskridge

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Hello

is there something like #canPerfom: or #respondsTo: in Amber? I'd like to forward some messages to a delegate, that may not understand some messages.

Thanks for any help.

Bernat Romagosa

Re:

Not sure a method like that exists, but you could always do something like:

(MyClass methodAt: #methodName) notNil

Although it smells like you should not be doing that... If you want to forward messages to a delegate, I think you'd better handle that in #doesNotUnderstand:

Cheers,

2011/11/10 Amber Milan Eskridge <[hidden email]>

Hello

is there something like #canPerfom: or #respondsTo: in Amber? I'd like to forward some messages to a delegate, that may not understand some messages.

Thanks for any help.

--
Bernat Romagosa.

Amber Milan Eskridge

Re:

Good Idea, thank you.

So you would suggest something like:

[delegate update: self] on: MessageNotUnderstood do: [].

On Thu, Nov 10, 2011 at 6:11 PM, Bernat Romagosa <[hidden email]> wrote:

Not sure a method like that exists, but you could always do something like:

(MyClass methodAt: #methodName) notNil

Although it smells like you should not be doing that... If you want to forward messages to a delegate, I think you'd better handle that in #doesNotUnderstand:

Cheers,

2011/11/10 Amber Milan Eskridge <[hidden email]>

Hello

is there something like #canPerfom: or #respondsTo: in Amber? I'd like to forward some messages to a delegate, that may not understand some messages.

Thanks for any help.

--
Bernat Romagosa.

Nicolas Petton

Re:

I would override #dnu:

#doesNotUnderstand: aMessage
^self delegate
perform: aMessage selector
withArguments: aMessage arguments

Cheers,
Nico

On Fri, 2011-11-11 at 16:55 +0100, Amber Milan Eskridge wrote:

> Good Idea, thank you.
>
>
>
>
> So you would suggest something like:
>
>
> [delegate update: self] on: MessageNotUnderstood do: [].
>
>
> ?
>
>
> On Thu, Nov 10, 2011 at 6:11 PM, Bernat Romagosa
> <[hidden email]> wrote:
> Not sure a method like that exists, but you could always do
> something like:
>
>
> (MyClass methodAt: #methodName) notNil
>
>
> Although it smells like you should not be doing that... If you
> want to forward messages to a delegate, I think you'd better
> handle that in #doesNotUnderstand:
>
>
> Cheers,
>
>
> 2011/11/10 Amber Milan Eskridge
> <[hidden email]>
> Hello
>
>
> is there something like #canPerfom: or #respondsTo: in
> Amber? I'd like to forward some messages to a
> delegate, that may not understand some messages.
>
>
> Thanks for any help.
>
>
>
>
> --
> Bernat Romagosa.
>
>
>

Amber Milan Eskridge

Re:

That's inverse to what I'd like to achieve.

The delegate may not implement the methods, therefore this wouldn't help in this case.

What about this?

Object>>#ifPossibleDo

^ Proxy new on: self.

Proxy>>#on: anObject

subject := anObject.

Proxy>>#doesNotUnderstand: aMessage

^ (subject methodAt: #methodName)

ifNil: [^ subject]

ifNotNil: [subject perform: aMessage selector withArguments: aMessage arguments ]

...

self controller ifPossibleDo subviewMoved: aPoint.

On Sat, Nov 12, 2011 at 12:37 PM, Nicolas Petton <[hidden email]> wrote:

I would override #dnu:

#doesNotUnderstand: aMessage
^self delegate
perform: aMessage selector
withArguments: aMessage arguments

Cheers,
Nico

On Fri, 2011-11-11 at 16:55 +0100, Amber Milan Eskridge wrote:
> Good Idea, thank you.
>
>
>
>
> So you would suggest something like:
>
>
> [delegate update: self] on: MessageNotUnderstood do: [].
>
>
> ?
>
>
> On Thu, Nov 10, 2011 at 6:11 PM, Bernat Romagosa
> <[hidden email]> wrote:
> Not sure a method like that exists, but you could always do
> something like:
>
>
> (MyClass methodAt: #methodName) notNil
>
>
> Although it smells like you should not be doing that... If you
> want to forward messages to a delegate, I think you'd better
> handle that in #doesNotUnderstand:
>
>
> Cheers,
>
>
> 2011/11/10 Amber Milan Eskridge
> <[hidden email]>
> Hello
>
>
> is there something like #canPerfom: or #respondsTo: in
> Amber? I'd like to forward some messages to a
> delegate, that may not understand some messages.
>
>
> Thanks for any help.
>
>
>
>
> --
> Bernat Romagosa.
>
>
>