content: package act.inject;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import act.app.App;
  import act.event.ActEvent;
  import act.event.SystemEvent;
  import org.osgl.util.E;
  
  import javax.inject.Provider;
  
  /**
   * Used to pass class binding resolution to DI plugin(s)
   */
  public abstract class DependencyInjectionBinder<T> extends ActEvent implements Provider<T>, SystemEvent {
  
      private Class<T> targetClass;
  
      public DependencyInjectionBinder(Object source, Class<T> targetClass) {
          super(source);
          E.NPE(targetClass);
          this.targetClass = targetClass;
      }
  
      @Override
      public Class eventType() {
          return DependencyInjectionBinder.class;
      }
  
      public Class<T> targetClass() {
          return targetClass;
      }
  
      public abstract T resolve(App app);
  
      @Override
      public T get() {
          return resolve(App.instance());
      }
  
  
  }
  