borland.jbcl Packages  borland.jbcl Class Hierarchy  borland.jbcl.model 

GraphModelMulticaster class

java.lang.Object
   +----borland.jbcl.model.GraphModelMulticaster

About the GraphModelMulticaster class

Properties  Methods  

Implements GraphModelListener, EventListener

A class that dispatches graph-model events to multiple listeners. GraphModelMulticaster maintains an array of listeners. The add(), remove(), and find() methods are used to manage this list.

The hasListeners() method determines whether any objects are listening for graph-model events. The dispatch() method sends a graph-model event to all listeners.

GraphModelMulticaster is not required to synchronize its access of the array of listeners because all changes are made to a copy of the original list.


GraphModelMulticaster properties

*Read-only properties **Write-only properties

Properties implemented in java.lang.Object

GraphModelMulticaster methods

Methods implemented in this class

Methods implemented in java.lang.Object


GraphModelMulticaster methods

add(borland.jbcl.model.GraphModelListener)

  public final synchronized void add(borland.jbcl.model.GraphModelListener listener)
Adds an object to the array of listeners.

Parameters:

listener
The object that is added to the list of listeners for graph-model events.

dispatch(borland.jbcl.model.GraphModelEvent)

  public final void dispatch(borland.jbcl.model.GraphModelEvent e)
Sends a graph-model event to all listeners. This is a high-speed dispatcher that does not need to be synchronized. If the event ID is CONTENT_CHANGED, it calls the modelContentChanged() method of the graph-model listeners. If the event ID is STRUCTURE_CHANGED, it calls the modelStructureChanged() method of the graph-model listeners.

Parameters:

e
The graph-model event sent to all listeners.

find(borland.jbcl.model.GraphModelListener)

  public int find(borland.jbcl.model.GraphModelListener listener)
Searches for the specified listener among the array of listening objects.

Parameters:

listener
The object you are searching for in the list of listeners.

hasListeners()

  public final boolean hasListeners()
Determines if there are any listeners for graph-model events. If the method returns true, one or more listeners are present.

remove(borland.jbcl.model.GraphModelListener)

  public final synchronized void remove(borland.jbcl.model.GraphModelListener listener)
Removes the specified listening object from the array of listeners for graph-model events.

Parameters:

listener
The listening object that is removed from the array of listeners.