用GWT JsInterop实现Javascript函数回调

public interface MyCallback {
    void onSuccess(String result);
    void onFailure(String error);
}

@JsType
public interface MyCallback {
    void onSuccess(String result);
    void onFailure(String error);
}

@JsFunction
public interface MyCallback {
    void onSuccess(String result);
    void onFailure(String error);
}

@JsMethod
public void performCallback(MyCallback callback) {
    // 执行一些操作，并根据结果调用回调方法
    if (someCondition) {
        callback.onSuccess("Success");
    } else {
        callback.onFailure("Error");
    }
}

var callback = {
    onSuccess: function(result) {
        console.log("Success: " + result);
    },
    onFailure: function(error) {
        console.log("Error: " + error);
    }
};

$entry(myJavaObject.performCallback(callback));