私はJTableを持っています。キーボードを上下に押すと、JTable のローソーターも変更されます。
質問する
780 次
1 に答える
4
に追加
KeyBinding
する必要がありますJTableHeader
3 つのステータスがあり
ASCENDING
、DESCENDING
UNSORTED
RowSorter
と KeyStroke
からの簡単な例F8
import java.awt.*;
import java.awt.event.*;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.List;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.RowSorter.SortKey;
class SelectedColumnTest {
private JPopupMenu popup = new JPopupMenu();
private JTableHeader header;
private Object selectedColumn = null;
private String[] columnNames = {"String", "Integer", "Boolean"};
private Object[][] data = {{"aaa", 12, true}, {"bbb", 5, false}, {"CCC", 92, true}};
private TableModel model = new DefaultTableModel(data, columnNames) {
private static final long serialVersionUID = 1L;
@Override
public Class<?> getColumnClass(int column) {
return getValueAt(0, column).getClass();
}
};
private JTable table = new JTable(model);
public JComponent makeUI() {
table.setRowSorter(new TableRowSorter<TableModel>(model) {
@Override
public void toggleSortOrder(int column) {
}
});
header = table.getTableHeader();
header.getActionMap().put("toggleSortOrder2", new AbstractAction() {
private static final long serialVersionUID = 1L;
@Override
public void actionPerformed(ActionEvent e) {
e.setSource(table);
table.getActionMap().get("focusHeader").actionPerformed(e);
if (selectedColumn != null) {
int i = header.getColumnModel().getColumnIndex(selectedColumn);
SortOrder order = SortOrder.ASCENDING;
List<SortKey> keys = new ArrayList<SortKey>(table.getRowSorter().getSortKeys());
if (!keys.isEmpty()) {
SortKey sortKey = keys.get(0);
if (sortKey.getColumn() == i && sortKey.getSortOrder() == SortOrder.ASCENDING) {
order = SortOrder.DESCENDING;
}
}
table.getRowSorter().setSortKeys(Arrays.asList(new SortKey(i, order)));
}
header.repaint();
}
});
InputMap im = header.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_F8, 0), "toggleSortOrder2");
header.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
JTableHeader h = (JTableHeader) e.getSource();
int i = h.columnAtPoint(e.getPoint());
Object o = h.getColumnModel().getColumn(i).getHeaderValue();
/*if (SwingUtilities.isRightMouseButton(e) && e.getClickCount() == 1) {
if (i < 0 || o == selectedColumn) {
selectedColumn = null;
popup.show(e.getComponent(), e.getX(), e.getY());
return;
}
selectedColumn = o;
} else*/ if (SwingUtilities.isLeftMouseButton(e) && e.getClickCount() == 1) {
if (i < 0 || o == selectedColumn) {
selectedColumn = null;
return;
}
selectedColumn = o;
h.requestFocusInWindow();
}
}
});
final TableCellRenderer hr = table.getTableHeader().getDefaultRenderer();
header.setDefaultRenderer(new TableCellRenderer() {
@Override
public Component getTableCellRendererComponent(JTable t, Object v,
boolean isS, boolean hasF, int row, int col) {
return (v == selectedColumn) ? hr.getTableCellRendererComponent(
t, v, true, true, row, col) : hr.getTableCellRendererComponent(
t, v, false, false, row, col);
}
});
header.setToolTipText("Sorting by F8");
JPanel p = new JPanel(new BorderLayout());
p.add(new JScrollPane(table));
createPopupMenu();
return p;
}
private void createPopupMenu() {
popup = new JPopupMenu();
JMenuItem myMenuItem1 = new JMenuItem("cccccccccccccccccccccc");
JMenuItem myMenuItem2 = new JMenuItem("bbbbbbbbbbbbbbbbbbbbbb");
popup.add(myMenuItem1);
popup.add(myMenuItem2);
MouseListener popupListener = new PopupListener(popup);
header.addMouseListener(popupListener);
}
private class PopupListener extends MouseAdapter {
private JPopupMenu popup;
PopupListener(JPopupMenu popupMenu) {
popup = popupMenu;
}
@Override
public void mousePressed(MouseEvent e) {
maybeShowPopup(e);
}
@Override
public void mouseReleased(MouseEvent e) {
maybeShowPopup(e);
}
private void maybeShowPopup(MouseEvent e) {
if (e.isPopupTrigger()) {
popup.show(e.getComponent(), e.getX(), e.getY());
}
}
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
createAndShowGUI();
}
});
}
public static void createAndShowGUI() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new SelectedColumnTest().makeUI());
f.setSize(320, 240);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}
于 2012-11-18T07:17:42.807 に答える