Question

我有一个主要课程：

public class Main extends JFrame {
  public static void main(String args[]) {
 SwingUtilities.invokeLater(new Runnable() {
       public void run() {
       Main m = new Main();
       m.initGUI(); 
      }
 }); 
 public void initGUI() {
   //add components for this JFrame
   //add JPanel with table
   //etc..
   this.pack();
   this.setLocationRelativeTo(null);
   this.setVisible(true);
  }

}

然后我有一个扩展JPanel的类：

class CTable extends JPanel {
  JTable table;
   public void initGUI() {
  //add components, table to JPanel etc...
  //action listeners to table
 }
 public void handleTableRowOnClick(String data) { 
   InfoDialog d = new InfoDialog(data);
   //HERE IS MY PROBLEM
   //do something else here (THIS SHOULD EXECUTE BUT IT DOESN'T) such as:
   String test = "test"
   //(IT ONLY EXECUTES AFTER I CLOSE THE DIALOG)
    //and I need the ModalityType.APPLICATION_MODAL functionality
 } 
}

然后我有另一个班：

class InfoDialog extends JDialog {
  JComboBox cb;
  String data;
   public void initGUI() { 
    //add components such as JComboBox
    //etc...
    this.setModalityType(ModalityType.APPLICATION_MODAL);
    this.setTitle("test");
    this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    this.pack();
    this.setLocationRelativeTo(null);
    this.setVisible(true);
  }
  public InfoDialog(String data) {
   this.data = data;
   this.initGUI();
  }

}

我的问题是，在这种情况下，确保InfoDialog实例位于同一事件调度线程（EDT）中的最佳方法是什么？

感谢您的回复。

Answer 1

最佳解决方案是在创建对话框之前检查EventQueue.isDispatchingThread ...

public void handleTableRowOnClick(final String data) { 
    Runnable runner = new Runnable() {
        public void run() {
            InfoDialog d = new InfoDialog(data);
        }
    }
    if (EventQueue.isDispatchingThread()) {
        runner.run();
    } else {
        EventQueue.invokeLater(runner);
    }
}

正如我在上一个问题中所说的那样，调用者应该负责确保代码的正确执行而不是你的组件。

确保在同一个（EDT）事件调度线程中

1 个答案: