在Vertex上添加一個鼠標偵聽器

Question

我想用Java中的JGraphX製作一個圖形，並在特定類型的頂點上添加一個mouseListener。

我已經嘗試使用graphComponent但不起任何作用......

這是我的代碼：

 mxGraphComponent graphComponent = new mxGraphComponent(graph); 

     graphComponent.getGraphControl().addMouseListener(new MouseAdapter() { 
      @Override 
      public void mousePressed(MouseEvent e) { 
       mxCell cell = (mxCell) graphComponent.getCellAt(e.getX(), e.getY()); 
       System.out.println("TOTO"); 

       if(cell != null && cell instanceof mxCell){ 
        if(cell.getValue().toString().equals("AAM")){ 
         System.out.println("My Cell selected"); 
        } 

       } 
      } 
     }); 

Answer 1

您的代碼工作正常，我。試試這個，它應該100％工作：

public class HelloWorld extends JFrame 
{ 
    private static final long serialVersionUID = -2707712944901661771L; 

    public HelloWorld() 
    { 
     super("Hello, World!"); 

     mxGraph graph = new mxGraph(); 
     Object parent = graph.getDefaultParent(); 

     graph.getModel().beginUpdate(); 
     try 
     { 
      String s1 = "Hello"; 
      String s2 = "World!"; 
      Object v1 = graph.insertVertex(parent, "ID1", s1, 20, 20, 80, 30); 
      Object v2 = graph.insertVertex(parent, "ID2", s2, 240, 150, 80, 30); 
      Object edge = graph.insertEdge(parent, "ID3", "TEST", v1, v2); 
     } 
     finally 
     { 
      graph.getModel().endUpdate(); 
     } 
     final mxGraphComponent graphComponent = new mxGraphComponent(graph); 

     graphComponent.getGraphControl().addMouseListener(new MouseAdapter() 
     { 
      @Override 
      public void mousePressed(MouseEvent e) 
      { 
       Object cell = graphComponent.getCellAt(e.getX(), e.getY()); 
       if (cell instanceof mxCell) 
       { 
        System.out.println(((mxCell) cell).getValue()); 
       } 
      } 
     }); 
     getContentPane().add(graphComponent); 
    } 

    public static void main(String[] args) 
    { 
     HelloWorld frame = new HelloWorld(); 
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     frame.setSize(400, 320); 
     frame.setVisible(true); 
    } 
}