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POprogrammatically close a JPanel which is displayed in JDialog
 

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  1. POprogrammatically close a JPanel which is displayed in JDialog
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    <p>I have a main application frame (<code>MainFrame class</code>). On actionperformed event of a <code>JButton</code>, a <code>JPanel (MyJPanel class)</code> is opened by placing it in <code>JDialog</code>. I am not extending <code>JDialog</code> to create <code>MyJPanel</code> class because I might need MyJPanel at other purposes too.</p> <p>My Problem is I cannot programmatically close the <code>MyJPanel</code> which is displayed in <code>JDialog</code>. Is there anything that I missing? Could you please figure it out?</p> <pre><code>import java.awt.EventQueue; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.WindowConstants; public class MainFrame extends JPanel { public MainFrame() { JButton btnOpenJdialog = new JButton("Open JDialog"); add(btnOpenJdialog); btnOpenJdialog.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { JDialog jd = new JDialog(); MyJPanel mjp = new MyJPanel(true);//showing in JDialog jd.setTitle("JDialog"); jd.add(mjp); jd.pack(); jd.setVisible(true); } }); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } public static void createAndShowGUI() { JFrame frame = new JFrame("Test-JFrame"); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.getContentPane().add(new MainFrame()); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } } </code></pre> <p>MyJPanel Class :</p> <pre><code>import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JPanel; import javax.swing.JButton; public class MyJPanel extends JPanel { private boolean isShownInJDialog = false; public MyJPanel() { JButton btnCloseMe = new JButton("Finish Action"); add(btnCloseMe); btnCloseMe.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if (isShownInJDialog) { MyJPanel.this.setVisible(false); //how to close the JDialog too. } else { //just hide the content, MyJPanel.this.setVisible(false); } } }); } public MyJPanel(boolean isShownInJDialog) { this(); this.isShownInJDialog = isShownInJDialog; } } </code></pre> <p><strong>UPDATE</strong> I was able to solve this using Howard's answer as :</p> <pre><code>... if (isShownInJDialog) { Window w = SwingUtilities.getWindowAncestor(MyJPanel.this); w.setVisible(false); } ... </code></pre>
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    1. USgtiwari333
    1. USgtiwari333
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    1. COBy 'close the panel' DYM 'close the dialog'? Panels themselves are either shown or hidden, perhaps swapped in a `CardLayout`.
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      1. USAndrew Thompson
    2. CO[please to read this thread, especially comment by @missingfaktor](http://stackoverflow.com/questions/10933968/design-or-class-component-hierarchy-to-be-followed-for-the-wizard-application)
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      1. USmKorbel
    3. CO@AndrewThompson, I have modified my code, Actually there will be a `Boolean` to decide if `MyJPanel` is currently showing in `JDialog` (or anything that extends `Window`) or in another `Container`. I am able to solve this by the help of Howard's answer.
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      1. USgtiwari333
 

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