Hi all,
I'll have to set the basics for a in-house framework and can't make my mind
on the basic Presenter interface. Is it better to use HasWidgets or
AcceptsOneWidget ? This would lead to:
public interface Presenter {
public void go(final HasWidgets container);
}
or
public interface Presenter {
public void go(final AcceptsOneWidget container);
}
The former is more generic I think but you always have to think about
adding the line container.clear() in your implementations. In the latter,
it's more straightforward (container.setWidget(myView) ) and it is clearer
as it's enforce the responsibility on the depper Presenter to provide only
one widget. It's his responsability to group every widget into one
container before calling setWidget().
I prefer the latter but it seems that more components implement HasWidgets
so in the end the former would be easier to developp. What do you think ?
For the record, I was forced to develop a wrapper
(HasWidgetsToAcceptsOneWidgetWrapper) in order to pass the RootLayoutPanel
to my first Presenter using the latter method. Here's the dirty code:
public class HasWidgetsToAcceptsOneWidgetWrapper implements
AcceptsOneWidget {
private HasWidgets wrapped;
public HasWidgetsToAcceptsOneWidgetWrapper(HasWidgets wrapped) {
this.wrapped = wrapped;
}
public void setWidget(IsWidget widgetToAdd) {
wrapped.clear();
wrapped.add(widgetToAdd.asWidget());
}
}
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