A TableEditor is a manager for a Control that appears above a cell in a Table and tracks with the moving and resizing of that cell. It can be used to display a text widget above a cell in a Table so that the user can edit the contents of that cell. It can also be used to display a button that can launch a dialog for modifying the contents of the associated cell.

Here is an example of using a TableEditor:

	final Table table = new Table(shell, SWT.FULL_SELECTION | SWT.HIDE_SELECTION);
	TableColumn column1 = new TableColumn(table, SWT.NONE);
	TableColumn column2 = new TableColumn(table, SWT.NONE);
	for (int i = 0; i < 10; i++) {
		TableItem item = new TableItem(table, SWT.NONE);
		item.setText(new String[] {"item " + i, "edit this value"});
	}
	column1.pack();
	column2.pack();

	final TableEditor editor = new TableEditor(table);
	//The editor must have the same size as the cell and must
	//not be any smaller than 50 pixels.
	editor.horizontalAlignment = SWT.LEFT;
	editor.grabHorizontal = true;
	editor.minimumWidth = 50;
	// editing the second column
	final int EDITABLECOLUMN = 1;

	table.addSelectionListener(new SelectionAdapter() {
		public void widgetSelected(SelectionEvent e) {
			// Clean up any previous editor control
			Control oldEditor = editor.getEditor();
			if (oldEditor != null) oldEditor.dispose();

			// Identify the selected row
			TableItem item = (TableItem)e.item;
			if (item == null) return;

			// The control that will be the editor must be a child of the Table
			Text newEditor = new Text(table, SWT.NONE);
			newEditor.setText(item.getText(EDITABLECOLUMN));
			newEditor.addModifyListener(new ModifyListener() {
				public void modifyText(ModifyEvent e) {
					Text text = (Text)editor.getEditor();
					editor.getItem().setText(EDITABLECOLUMN, text.getText());
				}
			});
			newEditor.selectAll();
			newEditor.setFocus();
			editor.setEditor(newEditor, item, EDITABLECOLUMN);
		}
	});