Hi, Yes, copying and adapting one for the validators is exactly what I did in the end using the twitter library they have. However, I found it a bit difficult to do because the current validator seems to use a coffee script (Something i'm not familiar with, I struggle with JS as it is!). So I ended up getting the validator.js from running my T5 program and downloading it (I'm sure there is a better way, but I couldn't find this .js file otherwise), and then I had to figure out how to use require.js properly as I wasn't used to it. I'm sure now I know how to do it, it'll be easy enough, but when I did the twitter one it actually took me a fair bit of time to figure out how to do it - but I got there in the end.
Perhaps when I make this i'll note down some steps and I can post them somewhere to make it easier for other people. It might be a few days until I get the time, but i'll certainly do that. Thanks, Steve On 10 June 2015 at 01:38, Thiago H de Paula Figueiredo <thiag...@gmail.com> wrote: > On Tue, 09 Jun 2015 19:01:33 -0300, Stephen Nutbrown <steves...@gmail.com> > wrote: > >> Hi, > > > Hi! > >> >> I saw some posts on StackOverflow about validating files using >> JavaScript's >> files api (it looks fairly new so may not be suitable for projects which >> need to support old browsers): >> >> >> https://www.google.co.uk/url?sa=t&source=web&rct=j&ei=omB3Vb_MKKi07QbRvoDYBQ&url=http://stackoverflow.com/questions/3717793/javascript-file-upload-size-validation&ved=0CB0QFjAA&usg=AFQjCNGck_7qB8b7VzFExHQM72vzF6JxZA&sig2=XgAbDcP-E8-daXfAyP0tEg > > > Interesting! Thanks! I learned something new today . . . > >> Some time ago I implemented a client side twitter validator to check the >> length of text field values (it gets a bit complicated because links >> count> as fewer characters etc). > > > Twitter has a JS library that does this character counting, so it's just a > matter of copying and adapting the MaxLength validator from Tapestry. > >> I can have a go at doing the same for the >> fileuploader and can put whatever I make up on github somewhere. > > > Don't forget to post an announcement here. :) > >> It won't >> work on old browsers as per: >> >> https://www.google.co.uk/url?sa=t&source=web&rct=j&ei=Y2F3Vbf0IIet7AarkoLgBA&url=http://caniuse.com/fileapi&ved=0CB0QFjAA&usg=AFQjCNEufMjex_NEpHKkWV7k-pakFWDNJQ&sig2=-hTtFzGroBPZc9w0v1bGIA >> >> I'm a bit surprised that this doesn't exist, > > > What's "this"? :) > > > I thought it would and so I >> >> expected that I was doing something horribly wrong. I'll come back when I >> have it working as it may help others. >> >> Thanks, >> Steve >> On 9 Jun 2015 20:06, "Thiago H de Paula Figueiredo" <thiag...@gmail.com> >> wrote: >> >>> On Tue, 09 Jun 2015 14:39:54 -0300, Stephen Nutbrown >>> <steves...@gmail.com> >>> wrote: >>> >>> Hi Thiago, >>>> >>>> >>> >>> Hi! >>> >>> >>>> That's interesting. Perhaps the documentation wants updating. It says: >>>> "Note the importance of return this;. A void event handler method, or >>>> one that returns null, will result in the FileUploadException being >>>> reported to the user as an uncaught runtime exception." >>>> >>>> https://tapestry.apache.org/uploading-files.html >>>> >>> >>> Not returning "this" isn't just for uploading exceptions: it's for all >>> event handler methods, so I don't think it makes sense to put this >>> warning >>> in uploading-files.html. >>> >>> In your original code, returning "this", if you annotated your field with >>> @Persist(PersistenceConstants.FLASH), the message would appear. In this >>> very case, it appears to be the right thing to do (return "this"), as >>> otherwise Tapestry still considers the event as not handled and the >>> generic >>> exception handling is used. >>> >>> -- >>> Thiago H. de Paula Figueiredo >>> Tapestry, Java and Hibernate consultant and developer >>> http://machina.com.br >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org >>> For additional commands, e-mail: users-h...@tapestry.apache.org >>> >>> > > > -- > Thiago H. de Paula Figueiredo > Tapestry, Java and Hibernate consultant and developer > http://machina.com.br > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > For additional commands, e-mail: users-h...@tapestry.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
