org.opencms.main

Class CmsEventManager

java.lang.Object

org.opencms.main.CmsEventManager

public class CmsEventManager
extends java.lang.Object

Manager that controls the OpenCms event system. There is only one instance of this event manager class used by the OpenCms runtime. This instance can be obtained by calling OpenCms.getEventManager().

Events can be used in OpenCms to notify custom event listeners that certain system events have happened. Event listeners have to implement the interface I_CmsEventListener.

Since:

7.0.0

See Also:

CmsEvent, I_CmsEventListener

Field Summary

Fields

Modifier and Type	Field and Description
protected static I_CmsEventListener[]	EVENT_LIST Required as template for event list generation.

Constructor Summary

Constructors

Constructor and Description
CmsEventManager() Create a new instance of an OpenCms event manager.

Method Summary

Methods

Modifier and Type	Method and Description
void	addCmsEventListener(I_CmsEventListener listener) Add an OpenCms event listener that listens to all events.
void	addCmsEventListener(I_CmsEventListener listener, int[] eventTypes) Add an OpenCms event listener.
void	fireEvent(CmsEvent event) Notify all event listeners that a particular event has occurred.
void	fireEvent(int type) Notify all event listeners that a particular event has occurred without any additional event data.
void	fireEvent(int type, java.util.Map<java.lang.String,java.lang.Object> data) Notify all event listeners that a particular event has occurred.
protected void	fireEventHandler(java.util.List<I_CmsEventListener> listeners, CmsEvent event) Fires the specified event to a list of event listeners.
protected java.util.Map<java.lang.Integer,java.util.List<I_CmsEventListener>>	getEventListeners() Returns the map of all configured event listeners.
protected void	initialize(CmsEventManager base) Initialize this event manager with all events from the given base event manager.
void	removeCmsEventListener(I_CmsEventListener listener) Removes a cms event listener.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EVENT_LIST

protected static final I_CmsEventListener[] EVENT_LIST

Required as template for event list generation.

Constructor Detail

CmsEventManager

public CmsEventManager()

Create a new instance of an OpenCms event manager.

Method Detail

addCmsEventListener

public void addCmsEventListener(I_CmsEventListener listener)

Add an OpenCms event listener that listens to all events.

Parameters:

listener - the listener to add

addCmsEventListener

public void addCmsEventListener(I_CmsEventListener listener,
                       int[] eventTypes)

Add an OpenCms event listener.

Parameters:

listener - the listener to add

eventTypes - the events to listen for

fireEvent

public void fireEvent(CmsEvent event)

Notify all event listeners that a particular event has occurred.

Parameters:

event - the event that is forwarded to all listeners

fireEvent

public void fireEvent(int type)

Notify all event listeners that a particular event has occurred without any additional event data.

Parameters:

type - event type

fireEvent

public void fireEvent(int type,
             java.util.Map<java.lang.String,java.lang.Object> data)

Notify all event listeners that a particular event has occurred.

Parameters:

type - event type

data - event data

fireEventHandler

protected void fireEventHandler(java.util.List<I_CmsEventListener> listeners,
                    CmsEvent event)

Fires the specified event to a list of event listeners.

Parameters:

listeners - the listeners to fire

event - the event to fire

getEventListeners

protected java.util.Map<java.lang.Integer,java.util.List<I_CmsEventListener>> getEventListeners()

Returns the map of all configured event listeners.

Returns:

the map of all configured event listeners

initialize

protected void initialize(CmsEventManager base)

Initialize this event manager with all events from the given base event manager.

Parameters:

base - the base event manager to initialize this event manager with

removeCmsEventListener

public void removeCmsEventListener(I_CmsEventListener listener)

Removes a cms event listener.

Parameters:

listener - the listener to remove