source: fedd/abac-src/atnvis/src/com/algomagic/atn/NodeUpdate.java @ 40dd8c1

package com.algomagic.atn;

import att.grappa.*;


public class NodeUpdate 
    extends AbstractUpdate 
    implements Update, VisualizationConstants 
{
    private String _name;
    private String _type;
    private String _cluster;

    private String _satisfied;
    private String _processed;

    private boolean _local;

    private NodeState _oldState;
    private boolean _newNode;

    public NodeUpdate( String name, 
                       String type,
                       String cluster,
                       String satisfied,
                       String processed,
                       int side,
                       boolean local ) {
        _name = name;
        _type = type;
        _cluster = cluster;
        _satisfied = satisfied;
        _processed = processed;
        _side = side;
        _local = local;
        _newNode = false;
    }

    public String toString( ) {
        return "NodeUpdate: " + _name + " " + _type + " " + _cluster + " " + _satisfied + " " + _processed;
    }


    public boolean getLocal( ) {
        return _local;
    }

    public int initialize( VisualizationPanel visPanel ) {
        Graph g = visPanel.getGraph( );

        Node n = g.findNodeByName( _name );
        boolean newNode;
        int changed;

        if( n == null ) {
            new Node( g, _name );
            NodeState ns = new NodeState( _name, _type );
            changed = ns.updateState( this );

            newNode = visPanel.addNodeState( ns );
            _newNode = true;
            return 3;

        } else {

            NodeState ns = visPanel.getNodeState( _name );
            changed = ns.updateState( this );

            return changed;
        }

    }

    public Element getElement( VisualizationPanel visPanel ) {
        Graph g = visPanel.getGraph( );
        return g.findNodeByName( _name );
    }

    public boolean apply( VisualizationPanel visPanel ) {
        Graph g = visPanel.getGraph( );
        Node n = g.findNodeByName( _name );
        if( n != null ) {
            NodeState ns = visPanel.getNodeState( _name );
            _oldState = new NodeState( ns );

            ns.updateState( this );
            visPanel.setNodeProperties( n, ns, _local, _newNode );
            return true;
        }
        return false;
    }

    public void undo( VisualizationPanel visPanel ) {
        if( _oldState == null ) {
            throw new RuntimeException( );
        }
        
        Graph g = visPanel.getGraph( );
        Node n = g.findNodeByName( _name );

        if( n == null ) {
            throw new RuntimeException( );
        }

        NodeState ns = visPanel.getNodeState( _name );
        ns.setHidden( _oldState.getHidden( ) );
        ns.setSatisfied( _oldState.getSatisfied( ) );

        visPanel.setNodeProperties( n, _oldState, _local, _newNode );

    }

    public String getName( ) {
        return _name;
    }

    public String getSatisfied( ) {
        return _satisfied;
    }

    public String getProcessed( ) {
        return _processed;
    }

    public void setNew( ) {
        _newNode = true;
    }


}