如何跟蹤我的內部框架？

這個例子的代碼是我的實際程序的一個短版：如何跟蹤我的內部框架？

import java.awt.BorderLayout; 
import java.awt.EventQueue; 
import javax.swing.*; 


public class Example extends JFrame { 

private JPanel contentPane; 
private JTable table; 

/** 
* Launch the application. 
*/ 
public static void main(String[] args) { 
    EventQueue.invokeLater(new Runnable() { 
     public void run() { 
      try { 
       Example frame = new Example(); 
       frame.setVisible(true); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    }); 
} 

/** 
* Create the frame. 
*/ 
public Example() { 
    //what to do @ close 
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    setBounds(100, 100, 792, 585); 

    //content pane 
    contentPane = new JPanel(); 
    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); 
    contentPane.setLayout(new BorderLayout(0, 0)); 
    setContentPane(contentPane); 

    //create desktop pane add it to content pane 
    final JDesktopPane desktopPane = new JDesktopPane(); 
    contentPane.add(desktopPane, BorderLayout.CENTER); 

    //create Int Frame with table 
    JInternalFrame tableIntFrame = new JInternalFrame("TableIntFrame"); 
    tableIntFrame.setBounds(31, 29, 300, 205); 
    desktopPane.add(tableIntFrame); 

    //create the table 
    table = new JTable(); 

    table.setFillsViewportHeight(true); 
    table.setModel(new DefaultTableModel(
     new Object[][] { 
      {"Row 0 (click for more info)"}, 
      {"Row 1 (click for more info)"}, 
     }, 
     new String[] { 
      "Collumn 0" 
     } 
    )); 

    //add the table to a ScrollPane 
    JScrollPane scrollPane = new JScrollPane(); 
    scrollPane.setViewportView(table); 
    //add Scrollpane to table  
    tableIntFrame.getContentPane().add(scrollPane, BorderLayout.CENTER); 
    tableIntFrame.setVisible(true); 

    //Listen for events on selection 
    table.getSelectionModel().addListSelectionListener(new 
      ListSelectionListener() { 
     public void valueChanged(ListSelectionEvent e) { 

      // only fires ones 
      if (! e.getValueIsAdjusting()) 
      { 
       //create info frame with title set to selectedrow index 
       createFrame(desktopPane, table.getSelectedRow()+""); 

      } 

     } 
    }); 
    // Allow only one row to be selected. 
    table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); 



} 

//Creates an int frame with the title set to the row 
private void createFrame(JDesktopPane desktopPane, String selectedRow){ 

    JInternalFrame InfoIntFrame = new JInternalFrame("Info Row "+selectedRow); 
    InfoIntFrame.setBounds(425, 44, 183, 72); 
    //add to desktop 
    desktopPane.add(InfoIntFrame); 
    //set visible 
    InfoIntFrame.setVisible(true); 
    } 
}

如何獲得它爲這項工作，當點擊它的相應infoIntFrame已經打開不會創建infoIntframe的另一個實例一排？（注：infoIntFrames必須在運行時創建）

來源

2012-02-09 Arjhun

因爲您檢查並確保它不爲空，所以您不會在第一個FrameListIntFrame之後創建一個新的FrameListIntFrame。看起來你只是進入if語句一次。 – Dodd10x 2012-02-09 22:22:15

它可能是很好的問題，請與http://sscce.org/ – mKorbel 2012-02-09 22:37:19

這【答案】（http://stackoverflow.com/a/2741726/230513）編輯您的帖子引用了使用'Action'一個實例跟蹤多個內部幀。 – trashgod 2012-02-09 23:01:39

有兩個方面：

1）JInternalFrame tableIntFrame = new JInternalFrame("TableIntFrame");失去焦點

2）你必須檢查是否存在數組，創建新的前返回desktopPane.getAllFrames()另一個JInternalFrame，因爲（AFAIK）方法desktopPane.getAllFrames（）只返回可見的JInternalFrame

來源

2012-02-10 13:27:29 mKorbel

如何跟蹤我的內部框架？

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