Pomestit' knopku v JTable mozhno tak:
| Код |
import javax.swing.*;
import javax.swing.table.*;
import java.awt.*;
import java.awt.event.*;
class JTableButtonRenderer implements TableCellRenderer
{
private TableCellRenderer defaultRenderer;
public JTableButtonRenderer(TableCellRenderer renderer)
{
defaultRenderer = renderer;
}
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected,
boolean hasFocus,
int row, int column)
{
if(value instanceof Component)
return (Component)value;
return defaultRenderer.getTableCellRendererComponent(
table, value, isSelected, hasFocus, row, column);
}
}
class JTableButtonModel extends AbstractTableModel
{
private Object[][] rows = new Object[4][2];
JTableButtonModel()
{
MyButton b1 = new MyButton("Change font");
MyButton b2 = new MyButton("Change size");
MyButton b3 = new MyButton("Change spacing");
MyButton b4 = new MyButton("Change margin");
rows[0][0] = "Font";
rows[0][1] = b1;
rows[1][0] = "Size";
rows[1][1] = b2;
rows[2][0] = "Spacing";
rows[2][1] = b3;
rows[3][0] = "Margin";
rows[3][1] = b4;
EventButHandler eventHandler = new EventButHandler();
eventHandler.register(b1, b2, b3, b4);
b1.addActionListener(eventHandler);
// etc ...
}
private String[] columns = { "Numbers", "Buttons" };
public String getColumnName(int column)
{
return columns[column];
}
public int getRowCount()
{
return rows.length;
}
public int getColumnCount()
{
return columns.length;
}
public Object getValueAt(int row, int column)
{
return rows[row][column];
}
public boolean isCellEditable(int row, int column)
{
return false;
}
public Class getColumnClass(int column)
{
return getValueAt(0, column).getClass();
}
}
class EventButHandler implements ActionListener
{
MyButton b1, b2, b3, b4;
void register (MyButton b1, MyButton b2, MyButton b3, MyButton b4)
{
this.b1= b1;
this.b2 = b2;
this.b3 = b3;
this.b4 = b4;
}
public void actionPerformed(ActionEvent ae)
{
if (ae.getSource().equals(b1))
{
System.out.println("Button pressed");
}
}
}
class MyButton extends JButton
{
MyButton(String name)
{
super(name);
}
void fireEvent(ActionEvent ae)
{
fireActionPerformed(ae);
}
}
class JTableButtonMouseListener implements MouseListener
{
private JTable table;
private void forwardEventToButton(MouseEvent e) {
TableColumnModel columnModel = table.getColumnModel();
int column = columnModel.getColumnIndexAtX(e.getX());
int row = e.getY() / table.getRowHeight();
Object value;
MyButton button;
MouseEvent buttonEvent;
if(row >= table.getRowCount() || row < 0 ||
column >= table.getColumnCount() || column < 0)
return;
value = table.getValueAt(row, column);
if(!(value instanceof MyButton))
return;
button = (MyButton)value;
button.fireEvent(new ActionEvent(button, ActionEvent.ACTION_PERFORMED, ""));
}
public JTableButtonMouseListener(JTable table)
{
this.table = table;
}
public void mouseClicked(MouseEvent e)
{
//forwardEventToButton(e);
}
public void mouseEntered(MouseEvent e)
{
}
public void mouseExited(MouseEvent e)
{
}
public void mousePressed(MouseEvent e)
{
forwardEventToButton(e);
}
public void mouseReleased(MouseEvent e)
{
}
}
public final class JTableButton extends JFrame
{
private JTable table;
private JScrollPane scrollPane;
public JTableButton() {
super("JTableButton Demo");
TableCellRenderer defaultRenderer;
table = new JTable(new JTableButtonModel());
defaultRenderer = table.getDefaultRenderer(JButton.class);
table.setDefaultRenderer(JButton.class,
new JTableButtonRenderer(defaultRenderer));
table.setPreferredScrollableViewportSize(new Dimension(400, 200));
table.addMouseListener(new JTableButtonMouseListener(table));
scrollPane = new JScrollPane(table);
setContentPane(scrollPane);
}
public static void main(String[] args)
{
Frame frame;
WindowListener exitListener;
exitListener = new WindowAdapter() {
public void windowClosing(WindowEvent e) {
Window window = e.getWindow();
window.setVisible(false);
window.dispose();
System.exit(0);
}
};
frame = new JTableButton();
frame.addWindowListener(exitListener);
frame.pack();
frame.setVisible(true);
}
}
|
Nu a kak sovmestit' ee e JLabel - nuzhno podumat'. |