[Table] Swing Table 中使用 button

使用到自定义的 CellRenderer和 CellEditor. 它们以作为inner class加入到table所在的class中

定义一个cell的Jbutton渲染对象

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;
          }
        }

定义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;
          }

         //这里是点击button执行的操作 
                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中加入他们, 假设添加到table中名为＂button＂的列

table.getColumn( " Button " ).setCellRenderer( new  ButtonRenderer());
            
    table.getColumn( " Button " ).setCellEditor(  new  ButtonEditor( new  JCheckBox()));