根据节点选择折叠 jung 节点

发布于 2024-11-01 04:04:05 字数 728 浏览 4 评论 0 原文

当用户单击顶点时，我试图折叠顶点的所有子节点。但问题是，每次我尝试这样做时，都会出现以下错误：

Tree must not contain edu.ics.jung.graph.DelegateForest@17510d96

代码如下：

public void graphClicked(MyNode v, MouseEvent me)
{
    Collection<MyNode> childrens = graph.getChildren(v);
    Collection picked = new Hashset(childrens);

    if(picked.size>1)
    {
        Graph ingraph = this.radialLayout.getGraph();

        Graph clusterGraph = collapser.getClusterGraph(graph,childrens);
        Graph g = collapser.collapse(ingraph,clustergraph); //The error report points on this line
        .
        .
        .
    }
}

我正在使用 Forest 和 RadialLayout。谁能帮助我吗？我该如何解决这个问题？

原文

I am trying to collapse all the children of a vertex when a user clicks on it. But the problem is that, every time I tried to do so, I got the following error:

Tree must not contain edu.ics.jung.graph.DelegateForest@17510d96

The code is given below:

public void graphClicked(MyNode v, MouseEvent me)
{
    Collection<MyNode> childrens = graph.getChildren(v);
    Collection picked = new Hashset(childrens);

    if(picked.size>1)
    {
        Graph ingraph = this.radialLayout.getGraph();

        Graph clusterGraph = collapser.getClusterGraph(graph,childrens);
        Graph g = collapser.collapse(ingraph,clustergraph); //The error report points on this line
        .
        .
        .
    }
}

I am using a Forest with RadialLayout.
Can anyone help me? How can I solve the problem?