If Null is As Designed for the ListEditor, I suggest using an assertion to tell the user. I don't mind sending the List Editor an empty list, its when I forget to do code for that, that I try finding it. I appreciate the info about the other options. Thanks for looking at this too.
I'll have to setup breakpoints on exceptions. Thanks for the tip. Have a good day, Brandon Donnelson +Follow Me <https://plus.google.com/u/0/111739836936169749229/posts> On Thu, May 17, 2012 at 1:40 PM, Thomas Broyer <[email protected]> wrote: > >> >> On Thursday, May 17, 2012 8:47:22 PM UTC+2, Brandon Donnelson wrote: >>> >>> True that would fix the flush. But I'm wondering if this isn't a symptom >>> of an earlier problem. I'm thinking if the list is null on instantiation >>> the list backing doesn't get setup properly. So the question I would have >>> is if I add an item, will the list no longer be null and it seems to me >>> that it will still be null. So I think to fix the problem might be to >>> instantiate the list differently as well. >> >> >> You won't be able to add an item, as ListEditor#getList() will return >> 'null' if 'null' was passed to setValue(). >> >> Originally, when asked about 'null', BobV said you should use an >> OptionalFieldEditor in between the parent editor and the ListEditor (and >> then months later he added the 'null' handling in ListEditor#setValue). In >> this case, I think the OptionalFieldEditor is the way to go: if you want to >> "add a value to a 'null' list", then first make it "non-null" by calling >> the OptionalFieldEditor's setValue with an empty list, then add an element >> to ListEditor#getList() (which will then be non-null). I suppose, as an >> "optimization", you could also directly set a non-empty/populated list to >> the OptionalFieldEditor. >> > -- > You received this message because you are subscribed to the Google Groups > "Google Web Toolkit" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/google-web-toolkit/-/l2o-zTa8FykJ. > > 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. > -- 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.
