java - 添加顶点后如何更新 JGraphT View ？

Question

我使用 JGraphT 库创建了一个图形:

g = new ListenableUndirectedWeightedGraph <String, MyEdge>(MyEdge.class);
graphAdapter = new JGraphXAdapter<String, MyEdge>(g);

layout = new mxOrganicLayout(graphAdapter);
layout.execute(graphAdapter.getDefaultParent());

mxGraphComponent component = new mxGraphComponent(graphAdapter);

component.setPreferredSize(new Dimension(dim.width - 50, dim.height - 200));

add(component);

我想在按下按钮后动态添加一个新顶点

@Override
public void actionPerformed(ActionEvent e) {
    String a="1";
    String b="2";
    g.addVertex(a);
    g.addVertex(b);
    g.addEdge(a,b);

}

public static class MyEdge extends DefaultWeightedEdge { //weight
    @Override
    public String toString() {
        return String.valueOf(getWeight());
    }
}

如何刷新 View ？

Answer 1

试试这个:

public void actionPerformed(ActionEvent e) {
    String a="1";
    String b="2";
    [your mxGraph variable].getModel().beginUpdate();
    g.addVertex(a);
    g.addVertex(b);
    g.addEdge(a,b);
    [your mxGraph variable].getModel().endUpdate();
    [your mxGraph variable].refresh();

}

Java API for mxGraph
Java API for mxIGraphModel