Thank you all. I will experiment with the Javascript
option.
O. Oke
--- [EMAIL PROTECTED] wrote:
> I'm not sure how tricky it is in JavaScript...
>
> function doit(obj) {
> obj = obj.form;
> i = 0;
> while (obj.elements[i] != null) {
> if (obj.elements[i].type.toLowerCase() !=
> "button") {
> obj.elements[i].value = "";
> }
> i++;
> }
> }
>
> Attach this to the onClick event of a button in the
> form you want to clear, passing "this" as the
> argument, and that should do the trick. You might
> have to tweak it a little bit (for instance, I'm not
> sure it will clear file type input fields,
> checkboxes or radios), but it's probably close.
> Depends on your requirements and whether the
> round-trip to the server is acceptable or not. I
> tend to want to avoid any server trips I can, and
> something like this seems like a purely GUI
> function, so strikes me as a place whether the
> server doesn't need to be involved.
>
> --
> Frank W. Zammetti
> Founder and Chief Software Architect
> Omnytex Technologies
> http://www.omnytex.com
>
> On Mon, November 29, 2004 11:25 am, Pilgrim, Peter
> said:
> >
> >> -----Original Message-----
> >> From: aris [mailto:[EMAIL PROTECTED]
> >>
> >>
> >> Instead of a reset you could use a simple button
> and the
> >> related onClick
> >> event to call a javascript that sets all field to
> "".
> >> What do you think about this "workaround"?
> >> Take note that it isn't an expected behaviour for
> a reset
> >> button. I suggest
> >> you to name such a button with a value different
> from
> >> "reset". What do you
> >> think about "wipe" or "erase"?
> >> Bye,
> >> aris.
> >>
> >> ----- Original Message -----
> >> From: "O. Oke" <[EMAIL PROTECTED]>
> >> To: <[EMAIL PROTECTED]>
> >> Sent: Monday, November 29, 2004 3:01 PM
> >> Subject: Reset button does not clear JSP fields
> >>
> >>
> >> > Please help!
> >> >
> >> > Background
> >> > ==========
> >> > I retrieve data from the database, copy the
> data into
> >> > an Action Form, the data is then automatically
> entered
> >> > into corresponding fields.
> >> >
> >> >
> >> > After viewing the data, I want the RESET button
> to
> >> > empty all fields whenever it is clicked.
> Presently,
> >> > after clicking the RESET button, all fields
> still have
> >> > data. I believe the fields are repopulated
> with the
> >> > data in the Action Form.
> >> >
> >> > Does the RESET button have to forward to an
> Action
> >> > class that in turn replaces the relevant Action
> Form
> >> > in the relevant scope with an Action Form that
> has no
> >> > data? If not, can you please tell me the
> conventional
> >> > Struts way of setting all JSP fields to empty.
> >> >
> >
> > There is no conventional method. I recommend that
> you
> > avoid <html:cancel> because it is slightly
> confusing.
> >
> > The way I did is, is assume that RESET or REVERT
> button
> > is just same behaviour to a SUBMIT button in terms
> of Struts
> >
> > See below
> >
> >> > Note: In the reset method of the Action form,
> I set
> >> > all fields to "" .
> >> >
> >> > Thank you.
> >> >
> >> > O. Oke
> >
> >
> > ==////==
> >
> > What kind of reset functionality do you need ?
> >
> > 1. Reset as in "Clear"
> >
> > Clear all the input fields in a HTML Form to be
> blank.
> >
> > 2. Reset as in "Revert"
> >
> > Change all the input fields back to their original
> values,
> > before the user edited the form.
> >
> >
> > With (1) you can write a function with JavaScript
> to navigate
> > your around the DOM for your HTML Form element.
> You can
> > make an Struts Action that clears the ActionForm
> for you
> > (the so-called "going back to the server" option).
> >
> > With (2) you can program it with JavaScript, quick
> tricky
> > to do but not impossible. It is much easier to do
> this
> > inside server side Java. You will need to make the
> ActionForm
> > session scope. It will have to have to duplicate
> beans or
> > delegated beans inside, but if you know Commons
> BeanUtils
> > you can copy the value of one bean to another
> easily.
> >
> > I would use delegated beans for this to implement
> (2) revert
> >
> > class EmployeePayrollBean { ... }
> >
> > class SomeDahForm extends ActionForm {
> >
> > EmployeePayrollBean payroll = ... ;
> > EmployeePayrollBean payroll_backup = ... ;
> >
> > // assume getter/setter methods exists
> > }
> >
> > In the Action itself
> >
> > class SomeTypeOfAction extends Action {
> >
> > public void execute( ... ) {
> >
> > if ( button.equals("REVERT") {
> >
> > BeanUtils.copyProperties(
> > yourform.getPayroll(),
> > yourform.getPayrollBackup() );
> > // forward request back to JSP/view
> > }
> > }
> > }
> >
> > Because of the "nested" properties in
> Struts/Commons BeanUtils/JSTL the
> > above shouldn't be a problem for creating a JSP.
> >
> > It is trivial to take the Common BeanUtils API to
> write a ``GenericBean''
> > resetter that will reset all properties of a POJO
> to
> > either 0, 0.0F, 0.0, "" , null
> > (but be very careful list Java Collections!!!)
> >
> > HTH
> >
> > --
> > Peter Pilgrim
> > Operations/IT - Credit Suisse First Boston,
> > 10 South Colonnade, London E14 4QJ, United Kingdom
> > Tel: +44-(0)207-883-4497
> >
> >
> >
>
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