/*
* Copyright (C) 2012 Jason Gedge <http://www.gedge.ca>
*
* This file is part of the OpGraph project.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/**
*
*/
package ca.gedge.opgraph;
/**
* A listener for {@link OpNode}.
*/
public interface OpNodeListener {
/**
* Called when a basic property is changed on the node.
*
* @param propertyName the name of the property
* @param oldValue the old value of the property
* @param newValue the new value of the property
*/
public abstract void nodePropertyChanged(String propertyName, Object oldValue, Object newValue);
/**
* Called when an input field was added to a node.
*
* @param node the source node to which the input field was added
* @param field the input field that was added
*/
public abstract void fieldAdded(OpNode node, InputField field);
/**
* Called when an input field was removed from a node.
*
* @param node the source node from which the input field was removed
* @param field the input field that was removed
*/
public abstract void fieldRemoved(OpNode node, InputField field);
/**
* Called when an output field was added to a node.
*
* @param node the source node to which the output field was added
* @param field the output field that was added
*/
public abstract void fieldAdded(OpNode node, OutputField field);
/**
* Called when an output field was removed from a node.
*
* @param node the source node from which the output field was removed
* @param field the output field that was removed
*/
public abstract void fieldRemoved(OpNode node, OutputField field);
}