content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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 org.activiti.engine.impl.bpmn.helper;
  
  import org.activiti.engine.delegate.event.ActivitiEntityEvent;
  import org.activiti.engine.delegate.event.ActivitiEvent;
  import org.activiti.engine.delegate.event.ActivitiEventListener;
  
  /**
   * Base implementation of a {@link ActivitiEventListener}, used when creating event-listeners that are part of a BPMN definition.
   *
  
   */
  public abstract class BaseDelegateEventListener implements ActivitiEventListener {
  
      protected Class<?> entityClass;
  
      public void setEntityClass(Class<?> entityClass) {
          this.entityClass = entityClass;
      }
  
      protected boolean isValidEvent(ActivitiEvent event) {
          boolean valid = false;
          if (entityClass != null) {
              if (event instanceof ActivitiEntityEvent) {
                  Object entity = ((ActivitiEntityEvent) event).getEntity();
                  if (entity != null) {
                      valid = entityClass.isAssignableFrom(entity.getClass());
                  }
              }
          } else {
              // If no class is specified, all events are valid
              valid = true;
          }
          return valid;
      }
  }
  