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SuggestBox覆盖addSelectionHandler

我有一个带有Objects的自定义Oracle传递给SuggestBox.然后我需要从de SuggestBox中选择一个对象.

public HandlerRegistration addSelectionHandler(SelectionHandler<SuggestOracle.Suggestion> handler)
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问题是我没有建议.我有"CustomSuggestion".我读了de API,我尝试编写一个实现HasSelectionHandlers接口的Custom SuggestBox,但我不能,因为SuggestBox有一个接口的实现.我收到错误:

The interface HasSelectionHandlers cannot be implemented more than once with different arguments: HasSelectionHandlers<SuggestOracle.Suggestion> and HasSelectionHandlers<CustomSuggestion>
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你能帮助我吗?对不起,我的英语不好.

gwt

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