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/* 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.
*
* @author Frederik Heremans
*/
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();
}