ComboBox.getValue return null after binding???

[lichnost]

When I call ComboBox.getValue() just after binding, it return null however ComboBox.value field not null. If I select then something selected value returns as well.

Here is the example


public void onModuleLoad() {

TestBean bean = new TestBean();
bean.setName("Main bean");

TestBean nestedBean = new TestBean();
nestedBean.setName("Nested bean");
bean.setNested(nestedBean);


FormPanel form = new FormPanel();
final TextField<String> nameField = new TextField<String>();
nameField.setFieldLabel("Name");
form.add(nameField);

final ComboBox<BeanModel> combo = new ComboBox<BeanModel>();
ListStore<BeanModel> store = new ListStore<BeanModel>();

TestBean comboBean = new TestBean();
comboBean.setName("Nested bean 2");
store.add(BeanModelLookup.get().getFactory(TestBean.class).createModel(comboBean));

comboBean = new TestBean();
comboBean.setName("Nested bean 3");
store.add(BeanModelLookup.get().getFactory(TestBean.class).createModel(comboBean));

combo.setStore(store);
combo.setFieldLabel("Nested");
combo.setDisplayField("name");
form.add(combo);

final Bindings bindings = new Bindings();
bindings.addFieldBinding(new FieldBinding(nameField,"name"));
bindings.addFieldBinding(new FieldBinding(combo,"nested"));
bindings.bind(BeanModelLookup.get().getFactory(TestBean.class).createModel(bean));
RootPanel.get().add(form);

Button initBtn = new Button("Init", new SelectionListener<ComponentEvent>(){

@Override
public void componentSelected(ComponentEvent ce) {
TestBean bean = new TestBean();
bean.setName("Main bean");

TestBean nestedBean = new TestBean();
nestedBean.setName("Nested bean");
bean.setNested(nestedBean);

bindings.bind(BeanModelLookup.get().getFactory(TestBean.class).createModel(bean));
}

});
RootPanel.get().add(initBtn);

Button changeBtn = new Button("Check combobox", new SelectionListener<ComponentEvent>(){

@Override
public void componentSelected(ComponentEvent ce) {
if(combo.getValue()==null)
combo.markInvalid(null);
else Info.display("Yeah!!", "All right");
if(nameField.getValue()==null)
nameField.markInvalid(null);
}

});
RootPanel.get().add(changeBtn);
}Any suggestions?

[sven]

Post some complete example, also with your TestBean class.

[lichnost]

Here is it


public class TestBean implements BeanModelTag, Serializable{

/**
*
*/
private static final long serialVersionUID = 1L;

private TestBean nested;

private String name;

public void setName(String name) {
this.name = name;
}

public String getName() {
return name;
}

public void setNested(TestBean nested) {
this.nested = nested;
}

public TestBean getNested() {
return nested;
}

}

[kolli]

Are you selecting an item from the combo Box before clicking the changeBtn?? As it returns null if a value is not selected before.

[sven]

I looked into this and maybe found the reason and we will fix it.

[lichnost]

Are you selecting an item from the combo Box before clicking the changeBtn?? As it returns null if a value is not selected before.

Well.. if I'm not selecting an item, then it must return value binded with Bindings, right?

[kolli]

ooh i am really sorry i have no idea about bindings i will take a look into that..
thanks

[lichnost]

any progress for this issue??

[brginfo05]

There is a hack you can do to by pass that problem. I´ll post my code as soon as i can.

[brginfo05]

Forget my hack, its too unstable. Some times work sometimes dont.

[lichnost]

The workaround is to add model to the store manually after binding.

[tothit]

subscribe

[brginfo05]

Now i have another problem. When i select a new combobox value my grid store doesnt update. The textfields again work fine.

[brginfo05]

After some tests a realize that in the method updateModel() any code i put after r.set(property, val) doesnt work. The val is a ModelData type.