I think a flag similar to 'noSelectionRequired' would make the most sense....when true the unselectedLabel stays, when false it goes away upon a selection.
Nate Perkins General Dynamics C4 Systems This email message is for the sole use of the intended recipient(s) and may contain GDC4S confidential or privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not an intended recipient, please contact the sender by reply email and destroy all copies of the original message. ________________________________ From: Gerhard Petracek [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 12, 2007 5:29 AM To: MyFaces Discussion Subject: Re: [Trinidad] selectOneChoice: Make "unselectedLabel" item go away after selection? hello, @unselectedLabel: let's think about the following scenario: users have the option to select an entry (emphasis on option). -> a user would like to discard his/her choice. with your suggestion there is no neutral field any more. -> the user has no easy possibility to deselect his/her choice. ok - after the bug is fixed you have to use tr:selectItem instead of unselectedLabel to provide a permanent neutral option for the scenario above. or we have to introduce a new attribute (e.g. permanentUnselectedLabel or something similar, which indicates if the unselectedLabel should stay available or not). what's your opinion about that? @dynamic items: again just sample source code: <tr:selectOneChoice id="selectOne" value="-1" valueChangeListener="#{ bean.change}" autoSubmit="true" partialTriggers="selectOne" immediate="true"> <tr:selectItem label="Please choose" value="-1" rendered="#{!bean.valueSelected}"/> <f:selectItems value="#{bean.items}"/> </tr:selectOneChoice> within the bean: private boolean valueSelected; private List<SelectItem> items; public boolean isValueSelected() { return valueSelected; } public void setValueSelected(boolean valueSelected) { this.valueSelected = valueSelected; } public List<SelectItem> getItems() { if(items == null) { items = new ArrayList<SelectItem>(); for(int i = 0; i < 3; i++) { items.add( new SelectItem( i, "value: " + i ) ); } } return items; } public void setItems(List<SelectItem> items) { this.items = items; } public void change(ValueChangeEvent event) { setValueSelected( true ); } regards, gerhard 2007/12/12, Matthias Wessendorf <[EMAIL PROTECTED]>: this sounds odd to me as well. I would expect, the unselectedLabel goes away, once there was a selection. Do you mind to file a bug for this? -M On Dec 12, 2007 12:21 PM, Stephen Friedrich < [EMAIL PROTECTED]> wrote: > Thanks for the answer. > So basically you are saying I can't use > <tr:selectOneChoice unselectedLabel="Please choose" ...> for this?! > As you suggested I can "fake" that label myself, but I wonder what's the > purpose of the trinidad attribute if it does not do this automatically. > Part of the problem is that my select items are not hardcoded (are they ever > in real apps?), but based on a query. So I would have to wrap that query in > my backing bean to dynamically add/remove the unselected label. If I do that > I have to stop using entites (which are automatically converted to select > items by seam's s:selectItems), but will have to explicitly create > SelectItems. Quite a mess for such a simple feature. > > The current behaviour seems like a bug to me. > Why the heck does trinidad show an "unselected label" if there actually _is_ > a selection? > > > > hello, > > just a sample source code: > > <tr:selectOneChoice id="selectOne" value="0" > valueChangeListener="#{ bean.change}" autoSubmit="true" > partialTriggers="selectOne" immediate="true"> > <tr:selectItem label="Please choose" value="0" > rendered="#{!bean.valueSelected}"/> > <tr:selectItem label="one" value="1"/> > <tr:selectItem label="two" value="2"/> > </tr:selectOneChoice> > > > within the bean: > > private boolean valueSelected; > > public boolean isValueSelected() > { > return valueSelected; > } > > public void setValueSelected(boolean valueSelected) > { > this.valueSelected = valueSelected; > } > > public void change(ValueChangeEvent event) > { > setValueSelected( true ); > } > > regards, > gerhard > > > > 2007/12/12, Stephen Friedrich < [EMAIL PROTECTED]>: > I like to show "Please choose" in a selectOneChoice as long as no > option has been selected, yet. > As soon as the user selects one of the items the label should vanish > from the list. > (autoSubmit is set and the selectOneChoice is partialTrigger for itself.) > It really doesn't make any sense to select "Please choose" from > the list after having already selected something for real. > > > > -- > > http://www.irian.at > > Your JSF powerhouse - > JSF Consulting, Development and > Courses in English and German > > Professional Support for Apache MyFaces -- Matthias Wessendorf further stuff: blog: http://matthiaswessendorf.wordpress.com/ sessions: http://www.slideshare.net/mwessendorf mail: matzew-at-apache-dot-org -- http://www.irian.at Your JSF powerhouse - JSF Consulting, Development and Courses in English and German Professional Support for Apache MyFaces
