JGraphx一次更新一个节点的图形

Question

我正在使用Jacc生成的解析器来构造AST。在解析器中，我创建了一个JGraphT可听图：

public ListenableGraph<Expr, DefaultEdge> listenableGraph =
    new DefaultListenableGraph<>(graph);

并在解析时添加AST节点：

public Expr addNode(Expr node)
{
    listenableGraph.addVertex(node);

    if (node instanceof BinExpr)
    {
        listenableGraph.addEdge(node, 
            ((BinExpr)node).getLeft(), 
            new LabeledEdge());
        listenableGraph.addEdge(node, 
            ((BinExpr)node).getRight(), 
            new LabeledEdge());
    }
    else if (node instanceof Calc)
    {
        listenableGraph.addEdge(node, 
            ((Calc)node).getAst(), 
            new LabeledEdge());
    }
    else if (node instanceof UnaryExpr)
    {
        listenableGraph.addEdge(node,
            ((UnaryExpr)node).getValue());
    }
    else if (node instanceof Value)
    {
        listenableGraph.addEdge(node,
            ((Value)node).getLiteral());
    }

    return node;
}

我正在使用JGraphx和Swing显示我的AST。它可以工作，但是我想在添加第一个节点时显示该图，并在每次添加节点时对其进行更新。这是我的代码

import java.io.*;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

import com.mxgraph.layout.*;
import com.mxgraph.swing.*;
import org.jgrapht.*;
import org.jgrapht.ext.*;
import org.jgrapht.graph.*;
import org.jgrapht.event.*;


public class Main implements GraphListener<Expr, DefaultEdge>, ActionListener
{
    Parser parser;
    String expression;
    JTextField text = new JTextField();
    mxGraphComponent component;
    JGraphXAdapter<Expr, DefaultEdge> jgxAdapter;
    JPanel pane = new JPanel();
    JPanel innerPane = new JPanel();
    JButton button = new JButton("Eval");
    JFrame frame = new JFrame("AST");

    @Override
    public void edgeAdded(GraphEdgeChangeEvent<Expr, DefaultEdge> e)
    {
        jgxAdapter.getView().reload();
        innerPane.repaint();
        innerPane.revalidate();
    }

    @Override
    public void edgeRemoved(GraphEdgeChangeEvent<Expr, DefaultEdge> e)
    {
        jgxAdapter.getView().reload();
        innerPane.repaint();
        innerPane.revalidate();
    }

    @Override
    public void edgeWeightUpdated(GraphEdgeChangeEvent<Expr, DefaultEdge> e)
    {

    }

    @Override
    public void vertexAdded(GraphVertexChangeEvent<Expr> e)
    {
        jgxAdapter.getView().reload();
        innerPane.repaint();
        innerPane.revalidate();
    }

    @Override
    public void vertexRemoved(GraphVertexChangeEvent<Expr> e)
    {
        jgxAdapter.getView().reload();
        innerPane.repaint();
        innerPane.revalidate();
    }

    public void actionPerformed(ActionEvent e)
    {
        System.out.println(text.getText());

        parser = new Parser(new StringReader(text.getText()));
        parser.listenableGraph.addGraphListener(this);

        jgxAdapter = new JGraphXAdapter<>(parser.listenableGraph);
        jgxAdapter.setLabelsClipped(true);

        mxCompactTreeLayout layout = 
            new mxCompactTreeLayout(jgxAdapter);


        if(!(component ==  null))
        {
            innerPane.remove(component);
        }
        component = new mxGraphComponent(jgxAdapter);
        component.setMinimumSize(new Dimension(Integer.MAX_VALUE, 260));
        innerPane.add(component);

        parser.lexer.nextToken();
        parser.parse();

        layout.setHorizontal(false);
        layout.execute(jgxAdapter.getDefaultParent());

    }

    public static void main(String args[])
    {
        Main main = new Main();

        main.text.setMaximumSize(new Dimension(Integer.MAX_VALUE, 16));
        main.button.setMaximumSize(new Dimension(Integer.MAX_VALUE, 16));
        main.button.addActionListener(main);

        BoxLayout grid = new BoxLayout(main.pane, BoxLayout.Y_AXIS);
        main.pane.setLayout(grid);
        main.frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        main.frame.getContentPane().add(main.pane);
        main.pane.add(main.innerPane);
        main.innerPane.setLayout(new BorderLayout(0, 0));
        main.pane.add(main.text);
        main.pane.add(main.button);

        main.frame.setMinimumSize(new Dimension(600, 400));

        main.frame.pack();
        main.frame.setVisible(true);

    }

}

这确实有效，但是仅在添加所有节点后才显示AST。我的尝试是使用图侦听器并处理vertexAdded事件以使用repaint（）和revalidate（）更新图。捕获了事件，但只有在添加所有节点后，才会更新图摆动组件。