TITLE:JTableのセルに複数のJButtonを配置する
#navi(../)
#tags(JTable, TableCellEditor, TableCellRenderer, JButton, JPanel, ActionListener)
RIGHT:Posted by &author(aterai); at 2009-10-05
*JTableのセルに複数のJButtonを配置する [#wd1c2d32]
``JTable``のセル内にクリック可能な複数の``JButton``を配置します。

-&jnlp;
-&jar;
-&zip;

//#screenshot
#ref(http://lh4.ggpht.com/_9Z4BYR88imo/TQTQRygoYeI/AAAAAAAAAfU/-Sr9o7PsQkM/s800/MultipleButtonsInTableCell.png)

**サンプルコード [#ybe99159]
#code(link){{
class ButtonsPanel extends JPanel {
  public final List<JButton> buttons =
    Arrays.asList(new JButton("view"), new JButton("edit"));
  public ButtonsPanel() {
    super();
    setOpaque(true);
    for(JButton b: buttons) {
      b.setFocusable(false);
      b.setRolloverEnabled(false);
      add(b);
    }
  }
}
}}
#code{{
class ButtonsRenderer extends ButtonsPanel
                      implements TableCellRenderer {
  public ButtonsRenderer() {
    super();
    setName("Table.cellRenderer");
  }
  @Override public Component getTableCellRendererComponent(JTable table,
        Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    setBackground(isSelected?table.getSelectionBackground():table.getBackground());
    return this;
  }
}
}}
#code{{
class ButtonsEditor extends ButtonsPanel
                    implements TableCellEditor {
  public ButtonsEditor(final JTable table) {
    super();
    //---->
    //DEBUG: view button click -> control key down + edit button(same cell) press
    //       -> remain selection color
    MouseListener ml = new MouseAdapter() {
      @Override public void mousePressed(MouseEvent e) {
        ButtonModel m = ((JButton)e.getSource()).getModel();
        if(m.isPressed() && table.isRowSelected(table.getEditingRow())
                         && e.isControlDown()) {
          setBackground(table.getBackground());
        }
      }
    };
    buttons.get(0).addMouseListener(ml);
    buttons.get(1).addMouseListener(ml);
    //<----

    buttons.get(0).addActionListener(new ActionListener() {
      @Override public void actionPerformed(ActionEvent e) {
        fireEditingStopped();
        JOptionPane.showMessageDialog(table, "Viewing");
      }
    });

    buttons.get(1).addActionListener(new ActionListener() {
      @Override public void actionPerformed(ActionEvent e) {
        int row = table.convertRowIndexToModel(table.getEditingRow());
        Object o = table.getModel().getValueAt(row, 0);
        fireEditingStopped();
        JOptionPane.showMessageDialog(table, "Editing: "+o);
      }
    });

    addMouseListener(new MouseAdapter() {
      @Override public void mousePressed(MouseEvent e) {
        fireEditingStopped();
      }
    });
  }
  @Override public Component getTableCellEditorComponent(JTable table,
        Object value, boolean isSelected, int row, int column) {
    this.setBackground(table.getSelectionBackground());
    return this;
  }
  @Override public Object getCellEditorValue() {
    return "";
  }
  //Copid from AbstractCellEditor
  //protected EventListenerList listenerList = new EventListenerList();
  transient protected ChangeEvent changeEvent = null;
  @Override public boolean isCellEditable(java.util.EventObject e) {
    return true;
  }
//......
}}

**解説 [#e6806cbc]
上記のサンプルでは、``CellRenderer``用と``CellEditor``用に、``JButton``を2つ配置した``JPanel``をそれぞれ作成しています。アクションイベントを設定するのは、``CellEditor``用の``JButton``で、``CellRenderer``用の``JButton``は表示のためのダミーです。

// %%行の選択状態が切り替わるとき(例えば、一行目を選択していて、二行目のボタンをクリック)には、``CellEditor``用の``JButton``がうまくクリックできないので、``JTable``自体に以下のようなマウスリスナーを設定しています。%%
//
//#code{{
//class CellButtonsMouseListener extends MouseAdapter{
//  @Override public void mouseReleased(MouseEvent e) {
//    JTable t = (JTable)e.getComponent();
//    Point pt = e.getPoint();
//    int row  = t.rowAtPoint(pt);
//    int col  = t.columnAtPoint(pt);
//    if(t.convertRowIndexToModel(row)>=0 && t.convertColumnIndexToModel(col)==1) {
//      TableCellEditor ce = t.getCellEditor(row, col);
//      ce.stopCellEditing();
//      Component c = ce.getTableCellEditorComponent(t, null, true, row, col);
//      Point p = SwingUtilities.convertPoint(t, pt, c);
//      Component b = SwingUtilities.getDeepestComponentAt(c, p.x, p.y);
//      if(b instanceof JButton) ((JButton)b).doClick();
//    }
//  }
//}
//}}

----
- ``JSpinner``(``JButton``*``2``+``JTextField``)を``CellEditor``に使用する
-- [[CellEditorをJSpinnerにして日付を変更>Swing/DateCellEditor]]

#code{{
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.List;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
import javax.swing.text.*;

public class ButtonsInsideCellTest {
  private JComponent makeUI() {
    String[] columnNames = {"Buttons", "Spinner"};
    Object[][] data = {
      {50, 100}, {100, 50}, {30, 20}, {0, 100}
    };
    DefaultTableModel model = new DefaultTableModel(data, columnNames) {
      @Override public Class<?> getColumnClass(int column) {
        return getValueAt(0, column).getClass();
      }
    };
    JTable table = new JTable(model);
    table.setRowHeight(36);
    table.setAutoCreateRowSorter(true);

    TableColumn column = table.getColumnModel().getColumn(0);
    column.setCellRenderer(new ButtonsRenderer());
    column.setCellEditor(new ButtonsEditor());

    column = table.getColumnModel().getColumn(1);
    column.setCellRenderer(new SpinnerRenderer());
    column.setCellEditor(new SpinnerEditor());

    return new JScrollPane(table);
  }
  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 ButtonsInsideCellTest().makeUI());
    f.setSize(320, 240);
    f.setLocationRelativeTo(null);
    f.setVisible(true);
  }
}

class SpinnerPanel extends JPanel {
  public final JSpinner spinner = new JSpinner(new SpinnerNumberModel(100, 0, 200, 1));
  public SpinnerPanel() {
    super(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();

    c.weightx = 1.0;
    c.insets = new Insets(0, 10, 0, 10);
    c.fill = GridBagConstraints.HORIZONTAL;

    setOpaque(true);
    add(spinner, c);
  }
}
class SpinnerRenderer extends SpinnerPanel implements TableCellRenderer {
  public SpinnerRenderer() {
    super();
    setName("Table.cellRenderer");
  }
  @Override public Component getTableCellRendererComponent(
      JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    setBackground(isSelected?table.getSelectionBackground():table.getBackground());
    spinner.setValue((Integer)value);
    return this;
  }
}

class SpinnerEditor extends SpinnerPanel implements TableCellEditor {
//     public SpinnerEditor(final JTable table, final int column) {
//         super();
//     }
  @Override public Component getTableCellEditorComponent(
      JTable table, Object value, boolean isSelected, int row, int column) {
    this.setBackground(table.getSelectionBackground());
    spinner.setValue((Integer)value);
    return this;
  }
  @Override public Object getCellEditorValue() {
    //System.out.println("getCellEditorValue: " + spinner.getValue());
    //try {
    //  spinner.commitEdit();
    //} catch(Exception pe) {
    //  // Edited value is invalid, spinner.getValue() will return
    //  // the last valid value, you could revert the spinner to show that:
    //  JComponent editor = spinner.getEditor();
    //  if (editor instanceof JSpinner.DefaultEditor) {
    //    ((JSpinner.DefaultEditor)editor).getTextField().setValue(spinner.getValue());
    //  }
    //}
    return spinner.getValue();
  }

  //Copid from AbstractCellEditor
  //protected EventListenerList listenerList = new EventListenerList();
  transient protected ChangeEvent changeEvent = null;

  @Override public boolean isCellEditable(EventObject e) {
    return true;
  }
  @Override public boolean shouldSelectCell(EventObject anEvent) {
    return true;
  }
  @Override public boolean stopCellEditing() {
    try {
      spinner.commitEdit();
    } catch(Exception pe) {
      Toolkit.getDefaultToolkit().beep();
      return false;
      // 直前の値に戻して、編集を終了する場合
      // Edited value is invalid, spinner.getValue() will return
      // the last valid value, you could revert the spinner to show that:
      //JComponent editor = spinner.getEditor();
      //if (editor instanceof JSpinner.DefaultEditor) {
      //  ((JSpinner.DefaultEditor)editor).getTextField().setValue(spinner.getValue());
      //}
    }
    fireEditingStopped();
    return true;
  }
  @Override public void  cancelCellEditing() {
    fireEditingCanceled();
  }
  @Override public void addCellEditorListener(CellEditorListener l) {
    listenerList.add(CellEditorListener.class, l);
  }
  @Override public void removeCellEditorListener(CellEditorListener l) {
    listenerList.remove(CellEditorListener.class, l);
  }
  public CellEditorListener[] getCellEditorListeners() {
    return listenerList.getListeners(CellEditorListener.class);
  }
  protected void fireEditingStopped() {
    // Guaranteed to return a non-null array
    Object[] listeners = listenerList.getListenerList();
    // Process the listeners last to first, notifying
    // those that are interested in this event
    for(int i = listeners.length-2; i>=0; i-=2) {
      if(listeners[i]==CellEditorListener.class) {
        // Lazily create the event:
        if(changeEvent == null) changeEvent = new ChangeEvent(this);
        ((CellEditorListener)listeners[i+1]).editingStopped(changeEvent);
      }
    }
  }
  protected void fireEditingCanceled() {
    // Guaranteed to return a non-null array
    Object[] listeners = listenerList.getListenerList();
    // Process the listeners last to first, notifying
    // those that are interested in this event
    for(int i = listeners.length-2; i>=0; i-=2) {
      if(listeners[i]==CellEditorListener.class) {
        // Lazily create the event:
        if(changeEvent == null) changeEvent = new ChangeEvent(this);
        ((CellEditorListener)listeners[i+1]).editingCanceled(changeEvent);
      }
    }
  }
}

class ButtonsPanel extends JPanel {
  public final List<JButton> buttons = Arrays.asList(new JButton("+"), new JButton("-"));
  public final JLabel label = new JLabel() {
    @Override public Dimension getPreferredSize() {
      Dimension d = super.getPreferredSize();
      d.width = 50;
      return d;
    }
  };
  public int i = -1;
  public ButtonsPanel() {
    super();
    label.setHorizontalAlignment(SwingConstants.RIGHT);
    setOpaque(true);
    add(label);
    for(JButton b: buttons) {
      b.setFocusable(false);
      b.setRolloverEnabled(false);
      add(b);
    }
  }
}
class ButtonsRenderer extends ButtonsPanel implements TableCellRenderer {
  public ButtonsRenderer() {
    super();
    setName("Table.cellRenderer");
  }
  @Override public Component getTableCellRendererComponent(
      JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    this.setBackground(isSelected?table.getSelectionBackground():table.getBackground());
    label.setText(value!=null?value.toString():"");
    return this;
  }
}
class ButtonsEditor extends ButtonsPanel implements TableCellEditor {
  public ButtonsEditor() {
    super();
    buttons.get(0).addActionListener(new ActionListener() {
      @Override public void actionPerformed(ActionEvent e) {
        i++;
        label.setText(""+i);
        fireEditingStopped();
      }
    });

    buttons.get(1).addActionListener(new ActionListener() {
      @Override public void actionPerformed(ActionEvent e) {
        i--;
        label.setText(""+i);
        fireEditingStopped();
      }
    });

    addMouseListener(new MouseAdapter() {
      @Override public void mousePressed(MouseEvent e) {
        fireEditingStopped();
      }
    });
  }
  @Override public Component getTableCellEditorComponent(
      JTable table, Object value, boolean isSelected, int row, int column) {
    this.setBackground(table.getSelectionBackground());
    i = (Integer)value;
    label.setText(""+i);
    return this;
  }
  @Override public Object getCellEditorValue() {
    return i;
  }

  //Copid from AbstractCellEditor
  //protected EventListenerList listenerList = new EventListenerList();
  transient protected ChangeEvent changeEvent = null;

  @Override public boolean isCellEditable(EventObject e) {
    return true;
  }
  @Override public boolean shouldSelectCell(EventObject anEvent) {
    return true;
  }
  @Override public boolean stopCellEditing() {
    fireEditingStopped();
    return true;
  }
  @Override public void  cancelCellEditing() {
    fireEditingCanceled();
  }
  @Override public void addCellEditorListener(CellEditorListener l) {
    listenerList.add(CellEditorListener.class, l);
  }
  @Override public void removeCellEditorListener(CellEditorListener l) {
    listenerList.remove(CellEditorListener.class, l);
  }
  public CellEditorListener[] getCellEditorListeners() {
    return listenerList.getListeners(CellEditorListener.class);
  }
  protected void fireEditingStopped() {
    // Guaranteed to return a non-null array
    Object[] listeners = listenerList.getListenerList();
    // Process the listeners last to first, notifying
    // those that are interested in this event
    for(int i = listeners.length-2; i>=0; i-=2) {
      if(listeners[i]==CellEditorListener.class) {
        // Lazily create the event:
        if(changeEvent == null) changeEvent = new ChangeEvent(this);
        ((CellEditorListener)listeners[i+1]).editingStopped(changeEvent);
      }
    }
  }
  protected void fireEditingCanceled() {
    // Guaranteed to return a non-null array
    Object[] listeners = listenerList.getListenerList();
    // Process the listeners last to first, notifying
    // those that are interested in this event
    for(int i = listeners.length-2; i>=0; i-=2) {
      if(listeners[i]==CellEditorListener.class) {
        // Lazily create the event:
        if(changeEvent == null) changeEvent = new ChangeEvent(this);
        ((CellEditorListener)listeners[i+1]).editingCanceled(changeEvent);
      }
    }
  }
}
}}

**参考リンク [#b4c9d73f]
-[[JTableのセルにJButtonを追加して行削除>Swing/DeleteButtonInCell]]
-[[JTableのセルにHyperlinkを表示>Swing/HyperlinkInTableCell]]
-[http://tips4java.wordpress.com/2009/07/12/table-button-column/ Table Button Column « Java Tips Weblog]
-[[JTableのセル中にJRadioButtonを配置>Swing/RadioButtonsInTableCell]]
-[[JTableのCellにJCheckBoxを複数配置する>Swing/CheckBoxesInTableCell]]

**コメント [#le0df76f]
- 第``0``列目が編集状態でボタンをクリックした場合、パネルが二度表示されるバグを修正。 -- [[aterai]] &new{2009-10-06 (火) 11:56:21};
- [http://tips4java.wordpress.com/2009/07/12/table-button-column/ Table Button Column « Java Tips Weblog]を参考にして、``JTable#editCellAt``ではなく、逆に``TableCellEditor#stopCellEditing()``を使用してクリック直後に編集終了するように変更。 -- [[aterai]] &new{2009-11-03 (火) 04:36:55};
- ``Ctrl``キーを押しながら、``edit``ボタンをクリックすると異なる行(``table.getSelectedRow()``)の内容が表示されるバグを修正。 -- [[aterai]] &new{2011-03-10 (木) 02:35:35};
- すごいと思いました! -- [[いわく]] &new{2013-05-24 (金) 11:57:26};
-- こんばんは。たしかに``JTable``の``TableCellRenderer``、``TableCellEditor``の仕組みは、すごい良くできているといつも感心してしまいます :) -- [[aterai]] &new{2013-05-24 (金) 23:59:16};

#comment