Smalltalk › Instantiations

updateOperation part execute and cancel

_‹ Previous Topic Next Topic _›

Classic

List

Threaded

3 messages Options

vinref

updateOperation part execute and cancel

I have a form with two-way connections to an 'updateOperation' variable holding an instance from an ObjectFactory. The attributes are all String instances.

A "Save" button clicked event is connected to the #execute of the updateOperation and a "Cancel" button clicked event is connected to the #cancel of the updateOperation. The #self attribute of the updateOperation is promoted.

Testing it shows that values are written to the updateOperation variable even if I press "Cancel".

What am I missing?

Vince

--
You received this message because you are subscribed to the Google Groups "VAST Community Forum" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email].
To view this discussion on the web visit https://groups.google.com/d/msgid/va-smalltalk/66d197f0-2089-4b84-8a40-b9cc80d44f33n%40googlegroups.com.

Marcus Wagner

Re: updateOperation part execute and cancel

Hi Vince,

I assume you expect support to "roll back" changes of attributes upon cancelling.

Are you missing to apply the deferred update part

https://www.instantiations.com/vast-support/documentation/1000/index.html#page/bh/vahelp158.html ?

Marcus

On Wednesday, April 14, 2021 at 6:44:00 AM UTC+2 [hidden email] wrote:

Hi

I have a form with two-way connections to an 'updateOperation' variable holding an instance from an ObjectFactory. The attributes are all String instances.

A "Save" button clicked event is connected to the #execute of the updateOperation and a "Cancel" button clicked event is connected to the #cancel of the updateOperation. The #self attribute of the updateOperation is promoted.

Testing it shows that values are written to the updateOperation variable even if I press "Cancel".

What am I missing?

Vince

--
You received this message because you are subscribed to the Google Groups "VAST Community Forum" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email].
To view this discussion on the web visit https://groups.google.com/d/msgid/va-smalltalk/ef5e9ac7-3d24-4767-994e-51946e6800e8n%40googlegroups.com.

vinref

Re: updateOperation part execute and cancel

Hi Marcus

Yes, I am using it to buffer the changes until they are written when the user hits 'Save' or discarded when the user hits 'Cancel'. I am following this help page: https://www.instantiations.com/vast-support/documentation/1000/index.html#page/ug/vaug367.html.

I do remember tearing off a deferred update part and getting that to work, but I was curious about the updateOperation, which is vaguely similar to the 'aspectBuffer' in Dolphin Smalltalk that I use.

Vince

--
You received this message because you are subscribed to the Google Groups "VAST Community Forum" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email].
To view this discussion on the web visit https://groups.google.com/d/msgid/va-smalltalk/2798f49c-8395-48d7-9e44-fd8c31e31149n%40googlegroups.com.