On Jan 13, 8:54 am, Ignat Alexeyenko <[email protected]> wrote: > Hello everybody! > > Please consider the following use-case. > > I want to create a form with : > > Login > Password > Submit-Button > > Submit-Button should be enabled only if both login and password is not > empty. > > To implement the requirement I'm trying to use MVP as specified in GWT best > practieces. > Unfortunately the Button widget in GWT has no interface that can say the > object can be enabled/disabled. > > So, we somehow should export the "EnableAble" interface from Display (MVP) > for the presenter (MVP). > We can do it by applying the Adapter design pattern (GoF): create a wrapper > that will wrap the button and implement the custom interface - but this > approach looks pretty-bad - we should write a custom wrapper for every > widget we want to enable/disable. > > I think that all GWT widgets that can be enabled/disabled can implement the > interface that has the only "setEnabled(boolean enabled)" method. > > What do you think about it? > Maybe this suggest should be somehow placed in GWT wishlist?
See http://code.google.com/p/google-web-toolkit/issues/detail?id=2744 > Can you suggest other nice ways to resolve the task? Let's be pragmatic, I simply use a setSubmitEnabled(boolean) method.
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