Loading, Validating, Saving

XMLDialog keeps a handle to the ScriptExecutionContext passed to its constructor.
It also keeps a list of components implementing XMLDataWidget

It uses these when loading, validating, and saving data.

public class XMLDialog extends KDialog {
    private ScriptExecutionContext context;
    private Vector components = new Vector();

    public XMLDialog(... ScriptExecutionContext context) {
        ...
        this.context = context;
        parseNode(doc.getDocumentElement());
        loadData();
        ...
    }

    private void addComponent(Component component) {
        XMLBox box = (XMLBox)containers.peek();
        if (component instanceof XMLDataWidget) {
            components.add(component);
        }
        box.add(component);
    }

    private void loadData() {
        Iterator i = components.iterator();
        while (i.hasNext()) {
            XMLDataWidget widget = (XMLDataWidget)i.next();
            widget.loadData(context);
        }
    }

    private boolean validateData() {
        Iterator i = components.iterator();
        while (i.hasNext()) {
            Object object = i.next();
            if (object instanceof XMLDataValidator) {
                XMLDataValidator widget = (XMLDataValidator)object;
                if (!widget.validateData()) {
                    return false;
                }
            }
        }
        return true;
    }

    private void saveData() {
        Iterator i = components.iterator();
        while (i.hasNext()) {
            XMLDataWidget widget = (XMLDataWidget)i.next();
            widget.saveData(context);
        }
    }
}