Question

我正在构建一个非常简单的日历应用程序，以熟悉与GWT 2.1版本一起引入的MVP框架。
我想要实现的是能够在预定约会列表和可用时间列表之间切换我创建了CalendarPlace，CalendarActivity，CalendarView和CalendarViewImpl。我知道要导航到另一个地方我会调用PlaceController.goTo（Place），所以在我的日历应用中我会打电话：

clientFactory.getPlaceController.goTo(new CalendarPlace("freeTime");

URL为index.html＃CalendarPlace：freeTime表示空闲时间列表或

clientFactory.getPlaceController.goTo(new CalendarPlace("appointments");

列出预约的约会。该URL将是index.html＃CalendarPlace：约会

但问题是我在哪里回应不同的令牌？我猜CalendarPlace会是正确的地方，但我该怎么做呢？这是我的源代码（我从教程here中获取了大部分样板文件：
CalendarPlace：

public class CalendarPlace extends Place {
    private String calendarName;
    public CalendarPlace(String token) {
        this.calendarName = token;
    }
    public String getCalendarName() {
        return calendarName;
    }
    public static class Tokenizer implements PlaceTokenizer<CalendarPlace> {
        @Override
        public CalendarPlace getPlace(String token) {
            return new CalendarPlace(token);
        }
        @Override
        public String getToken(CalendarPlace place) {
            return place.getCalendarName();
        }

    }
}

CalendarActivity：

public class CalendarActivity extends AbstractActivity
    implements
        CalendarView.Presenter {
    private ClientFactory clientFactory;
    private String name;
    public CalendarActivity(CalendarPlace place, ClientFactory clientFactory) {
        this.name = place.getCalendarName();
        this.clientFactory = clientFactory;
    }
    @Override
    public void goTo(Place place) {
        clientFactory.getPlaceController().goTo(place);
    }
    @Override
    public void start(AcceptsOneWidget containerWidget, EventBus eventBus) {
        CalendarView calendarView = clientFactory.getCalendarView();
        calendarView.setName(name);
        calendarView.setPresenter(this);
        containerWidget.setWidget(calendarView.asWidget());
    }
}

CalendarViewImpl：

public class CalendarViewImpl extends Composite implements CalendarView {
    private VerticalPanel content;
    private String name;
    private Presenter presenter;
    private OptionBox optionBox;
    public CalendarViewImpl() {
        //optionBox is used for navigation
        //optionBox is where I call PlaceController.goTo() from
        optionBox=new OptionBox();
        RootPanel.get("bluebar").add(optionBox);
        content=new VerticalPanel();
        this.initWidget(content);
    }
    @Override
    public void setPresenter(Presenter listener) {
        this.presenter=listener;
    }
    @Override
    public void setName(String calendarName) {
        this.name = calendarName;
    }

    public void displayFreeTime() {
        //called from somewhere to display the free time
    }
    public void getAppointments() {
        //called from somewhere to display the appointments
    }
}

Answer 1

在CalendarActivity构造函数中，您可以访问该位置，因此也可以访问该令牌。把它放在一边，然后在你的start（）方法中你可以使用它。活动是为每个新导航创建的轻量级对象。

如何使用GWT的内置MVP框架响应URL？

1 个答案: