I am creating a calculator where a user can do the various operations by clicking on virtual numpad. Now I want to restrict the user to only select the various characters by clicking on the buttons and s/he should not be able to enter the values using keyboard. I tried using readonly="true"
but it is neither validating the input nor setting the values in the bean when we click on any button.
Do we have any such restrictions available in jsf?
I found another workaround:
That's the effect of JSF's safeguard against tampered/attacked requests wherein the hacker attempts to circumvent the
readonly
(anddisabled
) attribute by manipulating the HTML DOM and/or the HTTP request.Instead of
use
or
This makes sure that
readonly
is only effective during render response phase and not during all other JSF phases. So, when JSF is about to decode the input component during the apply request values phase, it will considerreadonly="false"
this way.See also:
#{facesContext.currentPhaseId.ordinal}
The key codes for the top row of numbers are 48-57 so you could write a function to disable keypress on those characters.
Something like this