洞穴人:
我个人认为这是一个疯狂的想法。如果您的单元格代表一个复合对象,那么我会考虑使用对话框或其他方式,但这就是我。
就个人而言,我认为这会在你的脸上爆炸......
例子
提出的概念均基于如何使用表格中的信息
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import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.HashMap;
import java.util.Map;
import javax.swing.AbstractCellEditor;
import javax.swing.ComboBoxModel;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableColumnModel;
public class Enrolement {
public static void main(String[] args) {
new Enrolement();
}
public Enrolement() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
DefaultTableModel model = new DefaultTableModel(new Object[]{"Subject"}, 10);
JTable tbl = new JTable(model);
TableColumnModel columnModel = tbl.getColumnModel();
columnModel.getColumn(0).setCellEditor(new SubjectTableCellEditor());
tbl.setRowHeight(columnModel.getColumn(0).getCellEditor().getTableCellEditorComponent(tbl, "Astronomy/Aurora Sinistra", true, 0, 0).getPreferredSize().height);
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new JScrollPane(tbl));
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class SubjectTableCellEditor extends AbstractCellEditor implements TableCellEditor {
private JComboBox subject;
private JComboBox teacher;
private JPanel editor;
private Map<String, String[]> subjectTeachers = new HashMap<>(25);
public SubjectTableCellEditor() {
subjectTeachers.put("Astronomy", new String[]{"Aurora Sinistra"});
subjectTeachers.put("Charms", new String[]{"Filius Flitwick"});
subjectTeachers.put("Dark Arts", new String[]{"Igor Karkaroff", "Amycus Carrow"});
subjectTeachers.put("Defence Against the Dark Arts", new String[]{"Defence Against the Dark Arts",
"Quirinus Quirrell",
"Gilderoy Lockhart",
"Remus Lupin",
"Bartemius Crouch Jr.",
"Dolores Umbridge",
"Severus Snape",
"Amycus Carrow"});
subjectTeachers.put("Flying", new String[]{"Rolanda Hooch"});
subjectTeachers.put("Herbology", new String[]{"Herbert Beery",
"Pomona Sprout",
"Neville Longbottom"});
subjectTeachers.put("History of Magic", new String[]{"Professor Cuthbert Binns"});
subjectTeachers.put("Potions", new String[]{"Severus Snape",
"Horace Slughorn"});
subjectTeachers.put("Transfiguration", new String[]{"Minerva McGonagall",
"Albus Dumbledore"});
subject = new JComboBox(new String[]{
"Astronomy",
"Charms",
"Dark Arts",
"Defence Against the Dark Arts",
"Flying",
"Herbology",
"History of Magic",
"Potions",
"Transfiguration"
});
teacher = new JComboBox();
editor = new JPanel(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.weightx = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
editor.add(subject, gbc);
editor.add(teacher, gbc);
subject.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
teacher.setModel(new DefaultComboBoxModel(subjectTeachers.get(subject.getSelectedItem())));
}
});
}
@Override
public Object getCellEditorValue() {
return subject.getSelectedItem() + "/" + teacher.getSelectedItem();
}
@Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
if (value instanceof String) {
String parts[] = value.toString().split("/");
subject.setSelectedItem(parts[0]);
teacher.setSelectedItem(parts[1]);
}
editor.setBackground(isSelected ? table.getSelectionBackground() : table.getBackground());
return editor;
}
}
}