Hello guys, I would like to talk to you about validation and the MVP pattern. Does someone already have implemented it? I checked out some validation frameworks, some of them are very interesting but I'm having problems to use them with the MVP pattern. I think that most of validation feedback screens can be cataloged as: 1. The ones that show messages in some part of the application, all messages together. Usually you need the same behavior inside a popup for example. 2. The ones that show messages near the widget that generates the problem, for example an invalid e-mail address message beside the TextBox. 3. The ones that are a mix of the two above.
For the the first one the solution is quite simple, I did it creating two events, ValidationError and ValidationOk, the presenter fire those events after validation. The ValidationErrorEvent keeps the list of error messages (or message keys). I didn't find a solution to work with popups in this case. For the other two I haven't found a solution. Maybe creating an interface and adding it to each widget that accepts interface modifications because of validations. I don't know, I'm using as reference these two frameworks: http://gwt-validation.googlecode.com and http://sourceforge.net/projects/gwt-vl/ (you can find a comparison of them here: http://techblog.maydu.eu/?p=7) Let's talk about it... As soon as I get progress I will post here. Best regards, -- Eduardo S. Nunes http://e-nunes.com.br --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
