GWT Editors - temporary field

[Manuel]

Hi everyone,

my question is regarding the Editors framework with Requestfactor, that im qctually using.

I got a proxy with two dates, that is used with editors. Now I want to show the difference of these two dates in a seperate field (i.e. 2 hours).
One simple approach could be, after calling driver.edit(proxy), to calculate the diff for the dates manually.
Another could be, to add the diff-field to my proxy. Since the field is read-only + its a temporary field, that is not and should not be persisted, that wouldnt be the best solution I think.


Im not deep in editors, I just got the base Editors+Requestfactory example running. So my question is, whats the best / simplest way, to include a temporary non persitent field with editors?

Thanks in advance.

Regards,
Manuel

[Thomas Broyer]

I would implement ValueAwareEditor on the editor that contains the subeditors for the two fields.

On setValue, compute the difference/duration and put it into a label for display (annotated with @Editor.Ignore, as it's not a field of the "model").

[Manuel]

Hi Thomas,
thanks for the your help, using ValueAwareEditor works well.

Now I also want to update the diff field, whenever one of the date fields value changes.
onPropertyChange dont get called, after changing one of the datefields. I think I have to add valueChangeHandlers on the datefields to recognize changes on them to update the diff-field, or is there also some mechanism in the editors-framework for this?

Thanks in advance.

Regards,
Manuel

[Thomas Broyer]

On Sunday, March 29, 2015 at 6:56:12 PM UTC+2, Manuel wrote:

Hi Thomas,
thanks for the your help, using ValueAwareEditor works well.

Now I also want to update the diff field, whenever one of the date fields value changes.
onPropertyChange dont get called, after changing one of the datefields. I think I have to add valueChangeHandlers on the datefields to recognize changes on them to update the diff-field, or is there also some mechanism in the editors-framework for this?

By design, the Editor framework doesn't listen for "live" changes, this is why you flush(). So yes, you have to register ValueChangeHandlers on the date fields yourself.