Custom component with children?

[Jana Parvanova <ja...@sirma.bg>]

Hi all!

I have a strange problem while trying to create a custom component.
I extend ComponentBase and add 4 child components:

public class UIAddressInput extends UIComponentBase implements ValueHolder, 
StateHolder {
....
 public UIAddressInput() {
....
  countryList.addValueChangeListener(new AddressChangeListener());

  countryList.setImmediate(true);
  countryList.setOnchange("this.form.submit( );");

  getChildren().clear();
  getChildren().add(countryList);
  getChildren().add(regionFld);
  getChildren().add(municipalityFld);
  getChildren().add(siteFld);
}

I don't save/restore the children in the save/restoreState method of the 
custom component.
Everything goes fine up to the form submission. I get:

java.lang.IndexOutOfBoundsException: Index: 4, Size: 4
        at java.util.ArrayList.RangeCheck(ArrayList.java:547)
        at java.util.ArrayList.get(ArrayList.java:322)
        at 
com.sirma.speedy.common.ui.component.UIAddressInput.processRestoreState(UIAddressInput.java:218)
        at 
javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:502)
        at 
javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:502)
        at 
org.apache.myfaces.application.jsp.JspStateManagerImpl.restoreComponentState(JspStateManagerImpl.java:129)

It occurred that in this method my component's getChildren method has 8 
items instead of 4 (that is, all children are duplicated there).
Children list is ok (4) in encodeBegin, decode, saveState and restoreState 
methods.
I just don't know when the children were added once more.

Any ideas?

Thanks,
Jana