[英]How to make my JComponent conform to JFrame.pack and Layout Managers?
[英]How to make a modal JFrame or another JComponent?
我有一个主JFrame和一个额外的JFrame用于输入许多其他参数。 所以,我需要我的第二个jframe将数据返回到主jframe(使用ActionListener进行“保存”按钮),但我不知道如何做到这一点。 请告诉我,我希望你能帮助我。 谢谢。
当你想要模态时,最好使用JDialog而不是JFrame。
不要将第二个依赖窗口设为JFrame。 请改用模态JDialog或JOptionPane。 许多人没有意识到JOptionPanes可以简单地通过将一个将GUI保存到JOptionPane中的JPanel来保存复杂的GUI。
例如:
import java.awt.*;
import java.awt.event.*;
import java.util.HashMap;
import java.util.Map;
import javax.swing.*;
@SuppressWarnings("serial")
public class ComplexOptionPane extends JPanel {
private PlayerEditorPanel playerEditorPanel = new PlayerEditorPanel();
private JTextArea textArea = new JTextArea(12, 30);
public ComplexOptionPane() {
textArea.setEditable(false);
textArea.setFocusable(false);
textArea.setFont(new Font(Font.MONOSPACED, Font.PLAIN, 16));
JPanel bottomPanel = new JPanel();
bottomPanel.add(new JButton(new AbstractAction("Get Player Information") {
@Override
public void actionPerformed(ActionEvent arg0) {
int result = JOptionPane.showConfirmDialog(null, playerEditorPanel,
"Edit Player JOptionPane", JOptionPane.OK_CANCEL_OPTION,
JOptionPane.PLAIN_MESSAGE);
if (result == JOptionPane.OK_OPTION) {
for (PlayerEditorPanel.FieldTitle fieldTitle : PlayerEditorPanel.FieldTitle
.values()) {
textArea.append(String.format("%10s: %s%n",
fieldTitle.getTitle(),
playerEditorPanel.getFieldText(fieldTitle)));
}
}
}
}));
setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
setLayout(new BorderLayout(5, 5));
add(new JScrollPane(textArea), BorderLayout.CENTER);
add(bottomPanel, BorderLayout.PAGE_END);
}
private static void createAndShowGui() {
ComplexOptionPane mainPanel = new ComplexOptionPane();
JFrame frame = new JFrame("ComplexOptionPane");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
@SuppressWarnings("serial")
class PlayerEditorPanel extends JPanel {
enum FieldTitle {
NAME("Name"), SPEED("Speed"), STRENGTH("Strength"), HEALTH("Health");
private String title;
private FieldTitle(String title) {
this.title = title;
}
public String getTitle() {
return title;
}
};
private static final Insets WEST_INSETS = new Insets(5, 0, 5, 5);
private static final Insets EAST_INSETS = new Insets(5, 5, 5, 0);
private Map<FieldTitle, JTextField> fieldMap = new HashMap<FieldTitle, JTextField>();
public PlayerEditorPanel() {
setLayout(new GridBagLayout());
setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createTitledBorder("Player Editor"),
BorderFactory.createEmptyBorder(5, 5, 5, 5)));
GridBagConstraints gbc;
for (int i = 0; i < FieldTitle.values().length; i++) {
FieldTitle fieldTitle = FieldTitle.values()[i];
gbc = createGbc(0, i);
add(new JLabel(fieldTitle.getTitle() + ":", JLabel.LEFT), gbc);
gbc = createGbc(1, i);
JTextField textField = new JTextField(10);
add(textField, gbc);
fieldMap.put(fieldTitle, textField);
}
}
private GridBagConstraints createGbc(int x, int y) {
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = x;
gbc.gridy = y;
gbc.gridwidth = 1;
gbc.gridheight = 1;
gbc.anchor = (x == 0) ? GridBagConstraints.WEST : GridBagConstraints.EAST;
gbc.fill = (x == 0) ? GridBagConstraints.BOTH
: GridBagConstraints.HORIZONTAL;
gbc.insets = (x == 0) ? WEST_INSETS : EAST_INSETS;
gbc.weightx = (x == 0) ? 0.1 : 1.0;
gbc.weighty = 1.0;
return gbc;
}
public String getFieldText(FieldTitle fieldTitle) {
return fieldMap.get(fieldTitle).getText();
}
}
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