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JTable-一列中有多个单元格编辑器

jtable swing java

Konrad Garus · 技术社区 · 16 年前

我想要我的 JTable 对单个列中的不同单元格使用不同的单元格编辑器。设想一个两列标签值表,如:

Name          | Value
--------------+--------------------------------
Identifier    | ST33442 (string editor)
Purchase Date | 7/7/10 (custom calendar editor)
Status        | Broken (combo editor)

如何动态构建编辑器?有点像 TableCellEditorFactory 太完美了。

2 回复 | 直到 16 年前

Guillaume 16 年前

您必须实现自己的单元编辑器并将其分配给列。您可能应该对单元渲染器执行相同的操作(例如,布尔将作为复选框而不是“true”/“false”进行渲染)。

public class TableEditorTest {

    public static void main(String[] args) {
        Object[][] data = new Object[][] {{"Identifier", "ST33442"}, {"Purchase Date", new Date()}, {"Status", Boolean.FALSE}};
        String[] columnNames = new String[] {"Name", "Value"};
        TableModel model = new DefaultTableModel(data, columnNames);
        JTable table = new JTable(model);
        JScrollPane scrollPane = new JScrollPane(table);
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(scrollPane);
        frame.pack();
        frame.setVisible(true);

        table.getColumnModel().getColumn(1).setCellEditor(new CustomTableCellEditor());
    }

    public static class CustomTableCellEditor extends AbstractCellEditor implements TableCellEditor {
        private TableCellEditor editor;

        @Override
        public Object getCellEditorValue() {
            if (editor != null) {
                return editor.getCellEditorValue();
            }

            return null;
        }

        @Override
        public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
            if (value instanceof Date) {
                editor = new DatePickerCellEditor();
            } else if (value instanceof String) {
                editor = new DefaultCellEditor(new JTextField());
            } else if (value instanceof Boolean) {
                editor = new DefaultCellEditor(new JCheckBox());
            }

            return editor.getTableCellEditorComponent(table, value, isSelected, row, column);
        }
    }
}

注意。 DatePickerCellEditor

Adrien Clerc 15 年前

我想到了另一个解决方案,因为我想重用默认编辑器,下面的类重新定义getColumnClass以获得不同的答案。据我测试,它运行良好,我可以使用setDefaultEditor等等。您可以注意到,可以增强此行为以仅将其应用于所需的列。

public class JXMultiTypeColumnTable extends JXTable {

private Map<Integer, Class<?>> viewedClassByColumn = new HashMap<Integer, Class<?>>();

public JXMultiTypeColumnTable(Object[][] rowData, Object[] columnNames) {
    super(rowData, columnNames);
}

public JXMultiTypeColumnTable(int numRows, int numColumns) {
    super(numRows, numColumns);
}

public JXMultiTypeColumnTable(TableModel dm, TableColumnModel cm, ListSelectionModel sm) {
    super(dm, cm, sm);
}

public JXMultiTypeColumnTable(TableModel dm, TableColumnModel cm) {
    super(dm, cm);
}

public JXMultiTypeColumnTable(TableModel dm) {
    super(dm);
}

public JXMultiTypeColumnTable() {
}

@Override
public Class<?> getColumnClass(int column) {
    Class<?> recordedClass = this.viewedClassByColumn.get(column);
    if (recordedClass != null) {
        return recordedClass;
    }
    return super.getColumnClass(column);
}

private void recordViewedClass(int row, int column) {
    this.viewedClassByColumn.put(column,
            this.getModel().getValueAt(
            this.convertRowIndexToModel(row), this.convertColumnIndexToModel(column))
            .getClass());
}

@Override
public TableCellRenderer getCellRenderer(int row, int column) {
    this.recordViewedClass(row, column);
    return super.getCellRenderer(row, column);
}

@Override
public TableCellEditor getCellEditor(int row, int column) {
    this.recordViewedClass(row, column);
    return super.getCellEditor(row, column);
}

}

JTable JXTable .