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///////////////////////////////////////////////////////////////////////////////
// For information as to what this class does, see the Javadoc, below. //
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, //
// 2007, 2008, 2009, 2010, 2014, 2015, 2022 by Peter Spirtes, Richard //
// Scheines, Joseph Ramsey, and Clark Glymour. //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation; either version 2 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program; if not, write to the Free Software //
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA //
///////////////////////////////////////////////////////////////////////////////
package edu.cmu.tetrad.session;
import java.util.EventObject;
/**
* Notifies a listener that some change has occurred in the session--a node has been added or removed, an edge has been
* added or removed, a model has been created or destroyed.
*
* @author josephramsey
*/
public class SessionEvent extends EventObject {
public static final int NODE_ADDED = 0;
public static final int NODE_REMOVED = 1;
public static final int PARENT_ADDED = 2;
public static final int PARENT_REMOVED = 3;
public static final int MODEL_CREATED = 4;
public static final int MODEL_DESTROYED = 5;
public static final int MODEL_UNCLEAR = 6;
public static final int EXECUTION_STARTED = 7;
public static final int REPETITION_CHANGED = 8;
public static final int ADDING_EDGE = 9;
private SessionNode node;
private SessionNode parent;
private SessionNode child;
private int type = -1;
/**
* Constructs an event where one session node is involved--session node added or removed, model created or
* destroyed.
*/
public SessionEvent(Object source, int type) {
super(source);
switch (type) {
case SessionEvent.EXECUTION_STARTED:
this.type = type;
break;
case SessionEvent.ADDING_EDGE:
this.type = type;
break;
default:
throw new IllegalArgumentException(
"Not the type of event that " +
"requires zero session nodes " +
"as arguments.");
}
}
/**
* Constructs an event where one session node is involved--session node added or removed, model created or
* destroyed.
*/
public SessionEvent(Object source, SessionNode node, int type) {
super(source);
if (node != null) {
this.node = node;
} else {
throw new NullPointerException();
}
switch (type) {
case SessionEvent.NODE_ADDED:
// Falls through!
case SessionEvent.NODE_REMOVED:
// Falls through!
case SessionEvent.MODEL_CREATED:
// Falls through!
case SessionEvent.MODEL_DESTROYED:
// Falls through!
case SessionEvent.MODEL_UNCLEAR:
// Falls through!
case SessionEvent.REPETITION_CHANGED:
this.type = type;
break;
default:
throw new IllegalArgumentException(
"Not the type of event that " +
"requires one session node " + "as argument.");
}
}
/**
* Constructs an event where two session nodes are involved--parent added or removed.
*/
public SessionEvent(Object source, SessionNode parent, SessionNode child,
int type) {
super(source);
this.parent = parent;
this.child = child;
switch (type) {
case SessionEvent.PARENT_ADDED:
// Falls through!
case SessionEvent.PARENT_REMOVED:
this.type = type;
break;
default:
throw new IllegalArgumentException(
"Not the type of event that " +
"requires two session nodes " +
"as arguments.");
}
}
/**
* Creates a new SessionEvent with the same information as the given event but with a new source.
*/
public SessionEvent(Object source, SessionEvent event) {
super(source);
this.node = event.getNode();
this.parent = event.getParent();
this.child = event.getChild();
this.type = event.getType();
}
/**
* @return the session node set, if this event was constructed using one session node.
*/
public SessionNode getNode() {
return this.node;
}
/**
* @return the parent session node set, if this is an event constructed using two session nodes.
*/
public SessionNode getParent() {
return this.parent;
}
/**
* @return the child session node set, if this is an event constructed using two session nodes
*/
public SessionNode getChild() {
return this.child;
}
/**
* @return the type of this event--one of NODE_ADDED, NODE_REMOVED, PARENT_ADDED, PARENT_REMOVED, MODEL_CREATED,
* MODEL_DESTROYED, MODEL_UNCLEAR.
*/
public int getType() {
return this.type;
}
}
