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.delegate.event;
  
  /**
   * Dispatcher which allows for adding and removing {@link ActivitiEventListener} s to the Activiti Engine as well as dispatching {@link ActivitiEvent} to all the listeners registered.
   *
  
   */
  public interface ActivitiEventDispatcher {
      /**
       * Adds an event-listener which will be notified of ALL events by the dispatcher.
       *
       * @param listenerToAdd
       *          the listener to add
       */
      void addEventListener(ActivitiEventListener listenerToAdd);
  
      /**
       * Adds an event-listener which will only be notified when an event of the given types occurs.
       *
       * @param listenerToAdd
       *          the listener to add
       * @param types
       *          types of events the listener should be notified for
       */
      void addEventListener(ActivitiEventListener listenerToAdd, ActivitiEventType... types);
  
      /**
       * Removes the given listener from this dispatcher. The listener will no longer be notified, regardless of the type(s) it was registered for in the first place.
       *
       * @param listenerToRemove
       *          listener to remove
       */
      void removeEventListener(ActivitiEventListener listenerToRemove);
  
      /**
       * Dispatches the given event to any listeners that are registered.
       *
       * @param event
       *          event to dispatch.
       */
      void dispatchEvent(ActivitiEvent event);
  
      /**
       * @param enabled
       *          true, if event dispatching should be enabled.
       */
      void setEnabled(boolean enabled);
  
      /**
       * @return true, if event dispatcher is enabled.
       */
      boolean isEnabled();
  }
  