My app has a use case where there is a page where the user can edit data and press save or interrupt editing and make a search or click links. The framework is kind of odd and uses javascript to submit a form for every link that is clicked so we ended up with a mishmash of javascript and java hacks the facilitate the dialogs and checks for unsaved data which became messy and I had to ask about it:
How to exclude components from javascript onkeydown
https://stackoverflow.com/questions/12525020/why-does-this-code-create-a-loop
I either got dialogs that never ended, pressing “yes” to “You have unsaved data. Do you want to comtinue?” made a loop to another same dialog and when I tried to fix it nothing works.
Now the program works on the screen but the solution is messy and if there is another bug or we notice that my solution affect other component there will be trouble.
So I’m asking if you know a plain Java way to check for unsaved session data? What happens is a form is presented to the user and clicking a link when data has been edited should present a dialog thatwarns that data is unsaved. I think doing it without javascript is a better solution, can you comment and/or help me here?
No.
The user enters data in their browser; there is no way for the server to know this unless you submit it.