Bug 12329 [Cell Editors] Request:ComboBoxCellEditor READ_ONLY style
Although CCombo accepts SWT.READ_ONLY style, there is no way to specify style when it is used in ComboBoxCellEditor. How about adding createControl(Composite parent, int style) method to ComboBoxCellEditor class?
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/CellEditor.java
package org.eclipse.jface.viewers;
/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */
import org.eclipse.jface.*;
import org.eclipse.jface.util.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
import java.util.*;
import java.util.List; 
/**
 * Abstract base class for cell editors. Implements property change listener handling,
 * and SWT window management.
 * <p>
 * Subclasses implement particular kinds of cell editors. This package contains various
 * specialized cell editors:
 * <ul>
 *   <li><code>TextCellEditor</code> - for simple text strings</li>
 *   <li><code>ColorCellEditor</code> - for colors</li>
 *   <li><code>ComboBoxCellEditor</code> - value selected from drop-down combo box</li>
 *   <li><code>CheckboxCellEditor</code> - boolean valued checkbox</li>
 *   <li><code>DialogCellEditor</code> - value from arbitrary dialog</li>
 * </ul>
 * </p>
 */
public abstract class CellEditor {