Swing/SliderInTableCell の変更点

---
category: swing
folder: SliderInTableCell
title: JTableのCellEditorとCellRendererにJSliderを使用する
tags: [JTable, TableCellEditor, TableCellRenderer, JSlider, ChangeListener]
author: aterai
pubdate: 2010-02-08T14:27:32+09:00
description: JTableのCellEditorとCellRendererにJSliderを使用するように設定します。
image: https://lh3.googleusercontent.com/_9Z4BYR88imo/TQTTK5HPd3I/AAAAAAAAAj8/qhIGBo92NNE/s800/SliderInTableCell.png
---
* 概要 [#summary]
`JTable`の`CellEditor`と`CellRenderer`に`JSlider`を使用するように設定します。

#download(https://lh3.googleusercontent.com/_9Z4BYR88imo/TQTTK5HPd3I/AAAAAAAAAj8/qhIGBo92NNE/s800/SliderInTableCell.png)

* サンプルコード [#sourcecode]
#code(link){{
class SliderRenderer extends JSlider implements TableCellRenderer {
  public SliderRenderer() {
    super();
    setName("Table.cellRenderer");
    setOpaque(true);
  }

  @Override public Component getTableCellRendererComponent(
      JTable table, Object value,
      boolean isSelected, boolean hasFocus,
      int row, int column) {
    Integer i = (Integer) value;
    setBackground(isSelected ? table.getSelectionBackground()
                             : table.getBackground());
    setValue(i.intValue());
    return this;
  }

  //Overridden for performance reasons. ---->
  @Override public void firePropertyChange(String p, boolean ov, boolean nv) {}
  // ...
}

class SliderEditor extends JSlider implements TableCellEditor {
  public SliderEditor(final JTable table) {
    super();
    setOpaque(true);
    addChangeListener(new ChangeListener() {
      @Override public void stateChanged(ChangeEvent e) {
        EventQueue.invokeLater(new Runnable() {
          @Override public void run() {
            int row = table.convertRowIndexToModel(table.getEditingRow());
            table.getModel().setValueAt(getValue(), row, 0);
            table.getModel().setValueAt(getValue(), row, 1);
          }
        });
      }
    });
  }

  @Override public Component getTableCellEditorComponent(JTable table,
      Object value, boolean isSelected, int row, int column) {
    Integer i = (Integer) value;
    this.setBackground(table.getSelectionBackground());
    this.setValue(i.intValue());
    return this;
  }

  @Override public Object getCellEditorValue() {
    return Integer.valueOf(getValue());
  }

  //Copied from AbstractCellEditor
  // ...
}
}}

* 解説 [#explanation]
- `0`列目
-- 編集不可
- `1`列目
-- `JSlider`を継承するセルエディタ、セルレンダラーを作成して設定
-- このスライダーのセルエディタに`ChangeListener`を追加し、同じ行の`0`列目の値と同期するよう設定

* 参考リンク [#reference]
- [[CellEditorをJSpinnerにして日付を変更>Swing/DateCellEditor]]
- [https://bugs.openjdk.org/browse/JDK-6348946 Bug ID: 6348946 JSlider's thumb moves in the wrong direction when used as a JTable cell editor.]
-- [https://community.oracle.com/thread/2153323 Swing - How to insert a JComponent into a cell of JTable]

* コメント [#comment]
#comment
- メモ: [https://bugs.openjdk.org/browse/JDK-6348946 Bug ID: 6348946 JSlider's thumb moves in the wrong direction when used as a JTable cell editor.] via. [https://community.oracle.com/thread/2153323 Swing - How to insert a JComponent into a cell of JTable] -- &user(aterai); &new{2011-01-16 (日) 02:25:31};

#comment