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MainPanel.java
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/
MainPanel.java
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// -*- mode:java; encoding:utf-8 -*-
// vim:set fileencoding=utf-8:
// @homepage@
package example;
import java.awt.*;
import java.util.stream.Stream;
import javax.swing.*;
public final class MainPanel extends JPanel {
private MainPanel() {
super(new BorderLayout());
JTextField field0 = new JTextField("Initially has BasicTextUI$TextTransferHandler");
field0.setName("default");
JTextField field1 = new JTextField("setEditable(false)");
field1.setEditable(false);
JTextField field2 = new JTextField("setEnabled(false)");
field2.setEnabled(false);
JTextField field3 = new JTextField("setTransferHandler(null)");
field3.setTransferHandler(null);
JTextField field4 = new JTextField("setDropTarget(null)");
field4.setDropTarget(null);
JTextField field5 = new JTextField("TransferHandler#canImport(...): false");
field5.setTransferHandler(new TransferHandler() {
@Override public boolean canImport(TransferSupport info) {
return false;
}
});
EventQueue.invokeLater(() -> {
// Component c = SwingUtilities.getRoot(getRootPane());
Container c = getTopLevelAncestor();
if (c instanceof JFrame) {
((JFrame) c).setTransferHandler(new TransferHandler() {
@Override public boolean canImport(TransferSupport info) {
return true;
}
@Override public boolean importData(TransferSupport support) {
// System.out.println(support.getTransferable());
return true;
}
});
}
});
Box box = Box.createVerticalBox();
box.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
Stream.of(field0, field1, field2, field3, field4, field5).forEach(tf -> {
tf.setDragEnabled(true);
box.add(tf);
box.add(Box.createVerticalStrut(10));
});
add(box, BorderLayout.NORTH);
setPreferredSize(new Dimension(320, 240));
}
public static void main(String[] args) {
EventQueue.invokeLater(MainPanel::createAndShowGui);
}
private static void createAndShowGui() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (UnsupportedLookAndFeelException ignored) {
Toolkit.getDefaultToolkit().beep();
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException ex) {
ex.printStackTrace();
return;
}
JFrame frame = new JFrame("@title@");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.getContentPane().add(new MainPanel());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}