GWT 列表编辑器绑定

Question

public interface Person {
    String getName();
    void setName(String name);
    List<PersonFriend> getFriends();
}

public interface PersonFriend {
    String getName();
}

我正在尝试为Person 实现一个仅查看的编辑器：

public class PersonViewEditor extends Composite implements Editor<Person> {
    private static PersonViewEditorUiBinder uiBinder = GWT.create(PersonViewEditorUiBinder.class);
    interface PersonViewEditorUiBinder extends UiBinder<Widget, PersonViewEditor> {}

    @UiField Label nameEditor;
    @UiField PersonFriendsViewEditor friendsEditor;

    @UiField FancyAnchor editAnchor;

    public PersonViewEditor(ClientFactory clientFactory) {
        initWidget(uiBinder.createAndBindUi(this));
        editAnchor.setPlace(
                clientFactory.getPlaceHistoryMapper(), 
                clientFactory.getPlaceController(), 
                new EditPersonPlace());
    }
}

public class PersonFriendsViewEditor extends Composite {
    private static PersonFriendsViewEditorUiBinder uiBinder = GWT.create(PersonFriendsViewEditorUiBinder.class);
    interface PersonFriendsViewEditorUiBinder extends UiBinder<Widget, PersonFriendsViewEditor> {}

    interface Driver extends SimpleBeanEditorDriver<List<PersonFriend>, ListEditor<PersonFriend, PersonFriendViewEditor>> {}

    private class PersonFriendViewEditorSource extends EditorSource<PersonFriendViewEditor> {
        @Override
        public PersonFriendViewEditor create(int index) {
            PersonFriendViewEditor friend = new PersonFriendViewEditor();
            containerPanel.insert(friend, index);       
            return friend;
        }       
    }

    @UiField HorizontalPanel containerPanel;

    public PersonFriendsViewEditor() {
        initWidget(uiBinder.createAndBindUi(this));     
        Driver driver = GWT.create(Driver.class);
        ListEditor<PersonFriend, PersonFriendViewEditor> editor = ListEditor.of(new PersonFriendViewEditorSource());
        driver.initialize(editor);  
    }
}

当我将Person 对象绑定到PersonViewEditor 时，friendsEditor 永远不会绑定到某人的朋友列表。看起来PersonFriendsViewEditor 应该实现一些魔术接口以允许 GWT 与之交互，但我找不到任何相关文档。 GWT 中有 dynatablerf 示例，但它们显式绑定了列表编辑器，我很好奇将其绑定为“外部”对象的一部分，所以我只是将 Person 绑定到 PersonViewEditor，它拥有所有数据/集小部件。

有什么想法吗？

Answer 1

PersonFriendsViewEditor 应该实现 IsEditor<ListEditor<PersonFriend, PersonFriendViewEditor>> - 这解决了问题。