手动实例化PresenterWidget（GWTP） [英] Instantiate a PresenterWidget (GWTP) manually

问题描述

我是GWT，GWTP的新手。

我有一个PresenterWidget，它可以多次实例化并添加到插槽中。我想以编程方式定义实例的数量。我只知道我通过注入它来创建一个新的Widget实例。

  @Inject MyWidgetPresenter first; 
 @Inject MyWidgetPresenter秒; 
 // ... 
  

我可以用新的实例化它吗？如何实例化视图？

我试图使用复合，因为它似乎是最聪明的解决方案，因为它不包含太多的逻辑。但我不能添加一个复合到一个插槽。

预先致谢 您可以获取 ClientGinjector 引用并调用getYourPresenter（）方法。如果声明为 @Singleton ，它将返回相同的实例，如果不是，将会创建一个新实例，与使用new相同，但将所有参数注入构造函数。
这与添加@Inject到一个字段相同。

新增：
如果您没有必要的演示者，你的 ClientGinjector ，你可以简单地在这个接口上写一个getter方法。例如：
$ b

  public interface ClientGinjector扩展了Ginjector {
 .... 
 SideMenuPresenter getSideMenuPresenter（）; 
 .... 
} 
  

i am new to GWT, GWTP.

I have a PresenterWidget which gets instantiated multiple times and gets added to a slot. I want to define the amount of instances programmatically. I only know that I make a new Instance of the Widget by Injecting it.

@Inject MyWidgetPresenter first; 
@Inject MyWidgetPresenter second; 
// ...

Can I instantiate it with new? how do instantiate the view?

I tried to use a composite because it seemed to be the smartest solution, because it doesnt contain much logic anyway. But I cant add a composite to a slot.

Thanks in advance

解决方案

You can get the ClientGinjector reference and call a getYourPresenter() method. If it's declared as @Singleton it will return the same instance, if is not will create a new instance, same as using new, but injecting all parameters to the constructor. It will be the same as adding @Inject to a field.

Added: If you don't have the required presenter there, at your ClientGinjector, you can simply write a getter method at that interface. Ex:

public interface ClientGinjector extends Ginjector {
    ....
    SideMenuPresenter getSideMenuPresenter();
    ....
}

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