user/test/com/google/gwt/core/interop/MyClassAcceptsJsFunctionAsCallBack.java

/*
 * Copyright 2015 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.gwt.core.interop;

/**
 * A class that has a field of JsFunction type, and a method that accepts JsFunction type parameter.
 */
public class MyClassAcceptsJsFunctionAsCallBack {

  private MyJsFunctionInterface callBack;

  public void setCallBack(MyJsFunctionInterface callBack) {
    this.callBack = callBack;
  }

  public int triggerCallBack(int a) {
    return callBack.foo(a);
  }
}