当我使用JXTable渲染和编辑数据时,到CellEditor的某些输入会丢失。
如果单击JXTable-ColumnHeader的Resizing-Divider或更改JFrame的宽度,则CellEditor会终止而无需提交该值。如果使用JTable,则将保存这些值。
由于要使用JXTable的其他功能,我想使用它,那么有没有办法修复JXTable?
例子:
package table.columnresize;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import org.jdesktop.swingx.JXTable;
/**
* Demo of differing behaviour of JXTable and JTable. JXTable loses input in a TableCell where JTable persists
* it.
* <p>
* <table border=1>
* <tr>
* <th></th>
* <th>JXTable</th>
* <th>JTable</th>
* </tr>
* <tr>
* <td>Click on TableColumnHeader</td>
* <td>saved</td>
* <td>saved</td>
* </tr>
* <tr>
* <td>Resizing with Divider of TableColumnHeader</td>
* <td>lost</td>
* <td>saved</td>
* </tr>
* <tr>
* <td>Changing the width of JFrame</td>
* <td>lost</td>
* <td>saved</td>
* </tr>
*
* </table>
* </p>
*
* @author bobndrew 2015-01-29
*/
public class JXTableAndJTableEditLossDemo
{
private static class DataModel extends DefaultTableModel
{
public DataModel( Object[][] data, Object[] columnNames )
{
super( data, columnNames );
}
}
private static void createAndShowUI()
{
Object[][] DATA = { { "One", 1 }, { "Two", 2 }, { "Three", 3 }, { "Four", 4 }, { "Five", 5 } };
String[] COLUMNS = { "A", "B" };
DataModel dataModel = new DataModel( DATA, COLUMNS );
JFrame frame1 = new JFrame( "JXTable" );
JXTable jXTable = new JXTable( dataModel );
//does not change anything: jXTable.setTerminateEditOnFocusLost( true );
System.out.println( jXTable.isTerminateEditOnFocusLost() );
frame1.add( new JScrollPane( jXTable ) );
frame1.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
frame1.pack();
frame1.setVisible( true );
JFrame frame2 = new JFrame( "JTable" );
JTable jTable = new JTable( dataModel );
//does not change anything: jTable.putClientProperty( "terminateEditOnFocusLost", Boolean.FALSE );
System.out.println( jTable.getClientProperty( "terminateEditOnFocusLost" ) );
frame2.add( new JScrollPane( jTable ) );
frame2.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
frame2.pack();
frame2.setLocation( (int) frame1.getLocation().getX() + frame1.getWidth() + 100, (int) frame1
.getLocation().getY() );
frame2.setVisible( true );
}
public static void main( String[] args )
{
java.awt.EventQueue.invokeLater( new Runnable()
{
@Override
public void run()
{
createAndShowUI();
}
} );
}
}
最佳答案
在调试JXTable
和JTable
时,我发现了丢失CellEdits的原因。
区别在于columnMarginChanged()
方法:
JXTable:
if (isEditing()) {
removeEditor();
}
JTable:
if (isEditing() && !getCellEditor().stopCellEditing()) {
getCellEditor().cancelCellEditing();
}
起初,我认为
removeEditor()
方法是JTable
的增强功能...但是后来我发现此OpenJDK changeset from September 2010修复了错误“4330950:在调整列宽大小时丢失了单元格中新输入的数据”。似乎对JDK所做的更改未应用于SwingX源代码。我会接受我自己的答案,因为现在已经清楚了不同行为的原因。
为了为我和其他SwingX用户解决此问题,我将转到SwingX邮件列表和错误跟踪器。