Hey!
my first guess is to find the element who is causing the event and
then stopping it.
I mean something like:
--- snip ---
confirmExit : function(ev) {
// my suggest:
var activator = Event.element(ev);
if (activator.hasClassName('ignore')){
Event.stop(ev);
// alert("event stopped");
}
// end
// Serialize the form contents again
this.newcontents = this.form.serialize();
// Compare latest form contents with original form contents
// to see if anything has changed.
if ((this.formcontents != this.newcontents) &&
! (this.submitted)) {
ev.returnValue = 'You have unsaved modifications to the
form data. If you leave without clicking the Save button, your changes
will be lost.';
// return Event.stop(ev);
}
--- snip ---
I did not test this since I currently have no time for deeper
investigation, but I hope this helps.
hf
Bastian
On Wed, May 21, 2008 at 3:20 PM, Mike P <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> I am new to Prototype and could use some assistance. I am using
> Prototype 1.6.0.1.
>
> Scenario:
>
> I have the following JS script elements included in the HEAD section
> of every page. This effectively creates an auto-confirm functionally
> when a user attempts to leave a modified form. Any form not decorated
> with the "ignoreForm" CSS class, will first prompt the user to confirm
> they want to exit without saving.
>
>
> <!-- Create class which will allow forms to monitor themselves for
> changes -->
> <script type="text/javascript">
>
> var FormWatch = Class.create();
>
> FormWatch.prototype = {
> initialize : function(form, options) {
> this.submitted = false;
>
> this.form = $(form);
>
> // Let's serialize this.form and store it...
> // This will store the "original" state of the form
> this.formcontents = $(form).serialize();
>
> // On submit, we let the user changes pass thru without
> prompting
> Event.observe(this.form, 'submit', function()
> {this.submitted =
> true; }.bind(this));
>
> // On beforeunload event, we check for changes using our
> confirmExit
> // method and prompt user to confirm, if necessary
> Event.observe(window, 'beforeunload',
> this.confirmExit.bind(this));
> // Event.stop(ev);
> },
> confirmExit : function(ev) {
> // Serialize the form contents again
> this.newcontents = this.form.serialize();
>
> // Compare latest form contents with original form
> contents
> // to see if anything has changed.
> if ((this.formcontents != this.newcontents) && !
> (this.submitted)) {
>
> ev.returnValue = 'You have unsaved modifications to the
> form data. If you leave without clicking the Save button, your changes
> will be lost.';
> // return Event.stop(ev);
> }
> }
> }
>
>
> </script>
>
> <script type="text/javascript">
> // Utilizes Prototype JS lib
> // On window load, loop thru forms on page which should not be
> ignored.
> // Register these forms with our modification listener so we can
> prompt
> // user to save changes. (see listener above)
>
> Event.observe(window, 'load', function() {
>
> // Get all forms on page
> var formArray = $A($(document.getElementsByTagName('form')));
>
> // Loop thru forms, register any forms which do NOT have the
> CSS
> // class "ignoreForm"
> formArray.each(function(aForm) {
>
> if (!($(aForm).hasClassName('ignoreForm'))) {
> new FormWatch(aForm);
> }
>
> });
>
> // Get all elements with a ignoreClick
> var linkArray = $A($(document.getElementsBy))
>
> });
>
>
> </script>
>
>
>
> The above code works fine.
>
> I need to incorporate the ability to selectively disable the
> beforeUnload logic based on the CSS class of the element which
> triggered the onPageUnload. In other words, I want the ability to
> apply a CSS class of "ignore" to an <A> or <INPUT> element and have
> the beforeUnload logic be ignored. This way, if I have a link which
> opens a popup or something similar, I do NOT prompt the user whether
> they want to save the form. The form processing would proceed as
> usual. I don't care how this is done, I played around with Event
> listeners using CSS selectors and also thought about wrapping events,
> but could not figure this out.
>
> Any help would be appreciated.
>
>
>
> >
>
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