Posted on 2008-03-02 00:16
kooyee 閱讀(1048)
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Swing/Applet
使用到自定義的
CellRenderer和 CellEditor. 它們以作為inner class加入到table所在的class中
定義一個cell的Jbutton渲染對象
class ButtonRenderer extends JButton implements TableCellRenderer 
{
public ButtonRenderer() {
setOpaque(true);
}
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
if (isSelected) {
setForeground(table.getSelectionForeground());
setBackground(table.getSelectionBackground());
} else {
setForeground(table.getForeground());
setBackground(UIManager.getColor("Button.background"));
}
setText((value == null) ? "" : value.toString());
return this;
}
}
定義button cell editor
class ButtonEditor extends DefaultCellEditor {
protected JButton button;
private String label;
private boolean isPushed;
private String selectId;
public ButtonEditor(JCheckBox checkBox) {
super(checkBox);
button = new JButton();
button.setOpaque(true);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
fireEditingStopped();
}
});
}
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected, int row, int column) {
if (isSelected) {
button.setForeground(table.getSelectionForeground());
button.setBackground(table.getSelectionBackground());
} else {
button.setForeground(table.getForeground());
button.setBackground(table.getBackground());
}
label = (value == null) ? "" : value.toString();
button.setText(label);
//get the value of the first cell in this selected row
selectId = table.getValueAt(row, 0).toString();
isPushed = true;
return button;
}
//這里是點擊button執行的操作
public Object getCellEditorValue() {
if (isPushed) {
JOptionPane.showMessageDialog(null, "The first of this row is"+selectId, "", JOptionPane.ERROR_MESSAGE);
}
isPushed = false;
return new String(label);
}
public boolean stopCellEditing() {
isPushed = false;
return super.stopCellEditing();
}
protected void fireEditingStopped() {
super.fireEditingStopped();
}
}
最后在table中加入他們, 假設添加到table中名為＂button＂的列
table.getColumn("Button").setCellRenderer(new ButtonRenderer());
table.getColumn("Button").setCellEditor( new ButtonEditor(new JCheckBox()));