Re: Problem with JTable and DefaultCellEditor

From:
"bparanj" <bparanj@gmail.com>
Newsgroups:
comp.lang.java.programmer,comp.lang.java.gui
Date:
30 May 2006 13:21:07 -0700
Message-ID:
<1149020467.457446.236140@i40g2000cwc.googlegroups.com>
Thank you Steve. I actually got some ideas from the Sun Swing forum.
The following code is based on that:

package swing.table;

import java.awt.Component;

import javax.swing.JTable;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableModel;
import javax.swing.text.JTextComponent;

import client.EditorState;

public class MyTable extends JTable {

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

    public Component prepareEditor(TableCellEditor editor, int row, int
col) {
      //If the cell is JComboBox then default behaviour is same as
super class.
      if(col == 2) {
          return super.prepareEditor(editor, row, col);
      }

      JTextComponent comp = (JTextComponent)
super.prepareEditor(editor, row, col);
      //The setText method makes the old value disappear when a user
starts typing in a
// cell
      if(!EditorState.getInstance().isRestoreInProgress()) {
          comp.setText(null);
      }

      return comp;
    }
}

This table allows the selection of cells in a table. This works fine in
most cases. The problem is that when I select a particular cell in a
table and open another table to display the data, it copies the value
of the old table's cell into the newly opened table cell.

How do I avoid this unwanted copy of old data? Thanks in advance.

 BP
http://www.ProblemSolvingSkill.net

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