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我有一个包含简单搜索表单的GWTP PresenterWidget
和View
对。GWT:将SubmitHandler添加到表单中,而不会将逻辑放在视图中
目前我通过调用我的View
的getSearchForm()
方法,这是不好的做法,因为它引用的,而不是一个接口的实际类添加SubmitHandler
到窗体:
public class HeaderPresenter extends PresenterWidget<HeaderPresenter.MyView>
{
public interface MyView extends View
{
void submitForm();
Form getSearchForm();
}
// ...omitted for brevity
@Inject
public HeaderPresenter(EventBus eventBus, DispatchAsync dispatchAsync, MyView view, PlaceManager placeManager)
{
// ...omitted for brevity
}
@Override
protected void onBind()
{
super.onBind();
getView().getSearchForm().addSubmitHandler(new SubmitHandler()
{
@Override
public void onSubmit(SubmitEvent event)
{
// stops the form submission
event.cancel();
// now we can do our stuff
String query = getView().getSearchQuery();
if(query != "") // don't search for a blank string
{
PlaceRequest request = new PlaceRequest.Builder().nameToken(NameTokens.search).with("q", query).build();
placeManager.revealPlace(request);
}
}
});
}
有没有一种方式来增加SubmitHandler
在HeaderPresenter
,或者我必须把该代码放在View
?
我想在演示者中尽可能多地保留逻辑。