如何在 Google Web 工具包 (GWT) 中从 JSNI 调用接口（实例化）

Question

我有一个实现接口的 class，我需要在下面的代码 GWT.see 中从 JSNI 调用该方法，

接口:

public interface HeaderFormatter {
   String format(String value);
}

class:

 public GWTGrouping implements HeaderFormatter {

    public String format(String value){
      return "<span><i class='fa fa-stop'></i></span>";
    }
    public void performGrouping(){
        if(isgroup){
          grouping();
        }  
    }

    public static native void grouping() /*-{
    //dont want to pass whole class to this method (this)
    //Need to access format(String value) Method which will return some logic
    //How to access that method here by passing interface not whole class
    }-*/;

}

Answer 1

你可以这样做：

public static native void grouping(HeaderFormatter hf) /*-{
   var value = // some String 
   var result = hf.@path.to.interface.HeaderFormatter::format(Ljava/lang/String)(value);
}-*/;

如何在 Google Web 工具包 (GWT) 中从 JSNI 调用接口（实例化）

How to call interface(instantiate) from JSNI in Google Web toolkit(GWT)

javascript

java

gwt