SelectionListener for Container

[Hùng Phạm]

If you are experiencing an issue please mention the full platform your issue applies to:
IDE: NetBeans

Desktop OS : Window
Simulator
------------------------------------------------------------- 

Dear Mr. Shai.

I got a problem about using tablelayout. It can not be full in screen that i expect.

By the way, could you give me idea to catch selection event when user click on the container.

(The container looks like a items of list on the right figure)

somecode.java

             layout = new TableLayout(5, 2);

            TableLayout.Constraint ct = layout.createConstraint();

            ct.setHorizontalSpan(2);

            lbName = new SpanLabel(); 

            lbName.setUIID("LabelTitle");

            lbSender = new Label();

            lbSenderDate = new Label();

......

            this.addComponent( ct,lbName);

            this.addComponent(lbSender);

Thank you !

[Shai Almog]

Hi,
I'm assuming that what you want about selection event is really the lead component: http://www.codenameone.com/blog/leading

Define the column width constraint to -2 to make it take up the rest of available space.

[Hùng Phạm]

Thank for your suggestion.

I wonder if I dont have any button in my container( Ex: my container has only label).

 I can not catch the event like ActionListener via setLeadComponent() approach. 

[Chen Fishbein]

The button does not have to be on the Container

            Button lead = new Button();

            lead.addActionListener(new ActionListener() {

                public void actionPerformed(ActionEvent evt) {

                }

            });

            container.setLeadComponent(lead);

[Hùng Phạm]

Thank Chen.

But i think it should be appropriate with one or two container. (We set 2 button to listen event on each container)
In my situation, I have list of container like that( You can see in first post)

It would suggest me to make a dummy button to catch this event but dont show it on UI. 

Is it a good idea?

[Shai Almog]

Did you try Chen's suggestion?
See http://www.codenameone.com/blog/leading

[Hùng Phạm]

Yes, i did it. 

I want to catch event like press/ long press on my custom list. My custom list contains list of container. Each of item container have only Label or SpanLabel. 

Following setLeadComponent() approach, we have to add a dummy button on each items to determine which item pressed and dont show this button on UI

// Somecode.java

Container center = new Container();

center.addComponent( ItemTaskItem[]);

 class ItemTaskView extends Container {

     

        private SpanLabel lbSender, lbSenderDate, lbReceiver, lbStartDate, lbCode, lbStatus;

        SpanLabel lbName;

      ..

Button dummy = new Button();

this.setLeadComponent(dummy);

dummy.setActionListener( ...)

}

[Shai Almog]

If this is in the renderer then you need to do something else entirely: http://www.codenameone.com/blog/deeper-in-the-renderer