sheetablejframe.java

《SWING HACKS》源码 作者: Joshua Marinacci,Chris Adamson 著 徐晔 译 出版: 2007年2月

import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;

public class SheetableJFrame extends JFrame {

    JComponent sheet;
    JPanel glass;

    public SheetableJFrame (String name) {
        super(name);
        glass = (JPanel) getGlassPane();
    }

    public JComponent showJDialogAsSheet (JDialog dialog) {
        sheet = (JComponent) dialog.getContentPane();
        sheet.setBackground (Color.red);
        glass.setLayout (new GridBagLayout());
        sheet.setBorder (new LineBorder(Color.black, 1));
        glass.removeAll();
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.anchor = GridBagConstraints.NORTH;
        glass.add (sheet, gbc);
        gbc.gridy=1;
        gbc.weighty = Integer.MAX_VALUE;
        glass.add (Box.createGlue(), gbc);
        glass.setVisible(true);
        return sheet;
    }

    public void hideSheet() {
        glass.setVisible(false);
    }

}