If you really want the checkbox to invoke a back-end action, I believe you'd have to do a short onselect JavaScript call to automatically "click" a hidden <h:commandLink> component that itself is defined to invoke the action. That's because actions are normally invoked only as a result of clicking on a link or button.
- Brendan -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, November 03, 2005 11:08 PM To: MyFaces Discussion; Simon Kitching Cc: MyFaces Discussion Subject: Re: Checkbox event That was helpful. But, I would like to try some other way to utilize the power of JSF :). Is there a action event or valuechange event for checkbox. Any idea? Thanks. Quoting Simon Kitching <[EMAIL PROTECTED]>: > [EMAIL PROTECTED] wrote: > > Hi, > > > > I need to display a list box when a checkbox is clicked. I guess we need > to > > implement OnSelect event for this purpose. Please, correct me here if I am > wrong. > > Does anybody have some examples of using onSelect in the backing bean?. > Any help > > is appreciated. > > > > onSelect is a *client side* thing only. It is a normal HTML feature that > allows an arbitrary piece of scripting to be run in the browser. Nothing > to do with JSF at all. > > You could implement what you want entirely on the client by ensuring > your page includes the listbox, but with its style set to display:none. > You should then be able to specify some script in the checkbox onSelect > attribute which finds that component and sets its style to visible. This > is really not JSF at all but that doesn't mean it's a bad solution. > > Alternatively, I expect you could map the checkbox value to some boolean > value on a backing bean, and use the same value to control the > "rendered" attribute of the listbox. > <h:selectBooleanCheckbox value="#{someBean.listBoxEnabled}"/> > <h:selectManyListbox rendered="#{someBean.listBoxEnabled}" ... /> > The problem here is that you need some mechanism for submitting the > entire form back to the server when the checkbox value is changed so the > page can be regenerated. > > > Maybe you can use tomahawk's collapsible panel control instead of the > checkbox/listbox combination, and avoid the whole issue? > > Regards, > > Simon >
