help: How to set checkbox with single check?

[wch2001 <wc...@hotmail.com>]

Dear all,

I have one ListView , inside  need to add checkbox for users to select, only
can select one, how can i  do? thanks a lot.

the following is the codes:

Java:
            ListView fileListView = new ListView("fileList", files) {

                @Override
                protected void populateItem(final ListItem item) {
                  
                    final FileObj fileObj = (FileObj) item.getModelObject();
                    
                    if (fileObj.isMain()) {
                        setPhotoMainStatus(true);
                        photoMainStatus = true;
                    }

                    CheckBox chkPhotoMain = new CheckBox("chkPhotoMain", new
PropertyModel(getParent(), "photoMainStatus"));
                    chkPhotoMain.add(new
AjaxFormComponentUpdatingBehavior("onClick") 
                    {
                        @Override
                        protected void onUpdate(AjaxRequestTarget target) 
                        {
                            System.out.println("----------------in the
checkbox, fileObj.getId()" + fileObj.getId());
                            
                        }
                    });
                    item.add(chkPhotoMain);

                    item.add(new AttributeModifier("class", true, new
AbstractReadOnlyModel() {

                        @Override
                        public Object getObject() {
                            return ((item.getIndex() % 2) == 1) ? "even" :
"odd";
                        }
                    }));
                }
            };

htmL;

<td width="100"><input type="checkbox" wicket:id="chkPhotoMain"/>main</td>


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Re: help: How to set checkbox with single check?

[Timo Rantalaiho <Ti...@ri.fi>]

Please post messages like this on the users list in the future.

On Tue, 02 Sep 2008, wch2001 wrote:
> I have one ListView , inside  need to add checkbox for users to select, only
> can select one, how can i  do? thanks a lot.

Shouldn't it be a RadioButton instead of CheckBox, then?

I would try something like

   chkPhotoMain.add(newAjaxFormComponentUpdatingBehavior("onClick") {
      @Override
      protected void onUpdate(final AjaxRequestTarget target) {
          ListView fileList = (ListView) findParent(ListView.class);
	  fileList.visitChildren(CheckBox.class, new IVisitor() {
	      public Object component(Component checkbox) {
	          doDisableOrSetModelObjectFalseOrWhatEverYouWantWith(checkbox);
		  target.addComponent(component);
	      }
	  });
      }
   });



>                     item.add(new AttributeModifier("class", true, new
> AbstractReadOnlyModel() {
> 
>                         @Override
>                         public Object getObject() {
>                             return ((item.getIndex() % 2) == 1) ? "even" :
> "odd";
>                         }

I think that OddEvenRowItem or something like that provides
this part out of the box.

Best wishes,
Timo

-- 
Timo Rantalaiho           
Reaktor Innovations Oy    <URL: http://www.ri.fi/ >