[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-1598) s:clearButton/s:clearLink

[Dan Allen (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBSEAM-1598?page=comments#action_12368906 ] 
            
Dan Allen commented on JBSEAM-1598:
-----------------------------------

Hmm...well, it will work perfectly for text fields, assuming of course that "this" is really a form button.  If it is a link, then there needs to be some find logic for the current form. The tricky part is other types of fields. Like should a checkbox be checked or not checked? What about a select?

Let me try a slightly different idea. If we mirror s:link and s:button, then for this to work, all we have to do is NOT send any data-related query parameters. The trouble with s:link and s:button is that they automatically propagate these values. So it isn't that we want to "clear" the form values, so much as it is that we want to submit without sending any POST or GET data other than what is needed to correlate it with the action, conversation, and task.

Basically you take UIButton, which extends UISeamCommandBase, and you override the getUrl() method to prevent appending the PageParameters and UIParameters. Keep the conversation, task, and action stuff. What you are saying is, I would like to continue onwards, but I don't want the data from the form. Of course, you could also argue that a simple flag on s:link and s:button would accomplish the same thing.

> s:clearButton/s:clearLink
> -------------------------
>
>                 Key: JBSEAM-1598
>                 URL: http://jira.jboss.com/jira/browse/JBSEAM-1598
>             Project: JBoss Seam
>          Issue Type: Feature Request
>          Components: JSF
>    Affects Versions: 2.0.0.BETA1
>            Reporter: Dan Allen
>            Priority: Minor
>   Original Estimate: 30 minutes
>  Remaining Estimate: 30 minutes
>
> The search is a very nice feature to have on the list pages generated by seam-gen, but I have watched people (and struggled myself) with figuring out how to clear the current  filter.  It is very annoying to have to manually erase all the values entered in the form and then submit the form again once cleared.  Far easier would be to have a Clear button on this form.
> The following button would do the trick.
> <h:commandButton id="clear" value="Clear" onclick="for (var i = 0, len = this.form.length; i &lt; len; i++) { if (this.form[i].type == 'text') { this.form[i].value = ''; } }" action="/${listPageName}.xhtml"/>
> I will admit that the JavaScript is a little hacky, but it gets the point across.  Feel free to refine.

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