Bug 126527 [Field Assist] - API - Field Decoration alignment issues are different for cell editors
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/DecoratedTextCellEditor.java
* outline in table already provides the look of a border.
	 */
	private static final int defaultStyle = SWT.SINGLE;
	/**
	 * Creates a new text string cell editor parented under the given control.
	 * The cell editor value is the string itself, which is initially the empty
	 * string. Initially, the cell editor has no cell validator.
	 * 
	 * @param parent
	 *            the parent control
	 */
	public DecoratedTextCellEditor(Composite parent) {
		super(parent, defaultStyle);
	}
	/**
	 * Checks to see if the "deleteable" state (can delete/ nothing to delete)
	 * has changed and if so fire an enablement changed notification.
	 */
	private void checkDeleteable() {
		boolean oldIsDeleteable = isDeleteable;
		isDeleteable = isDeleteEnabled();
		if (oldIsDeleteable != isDeleteable) {
			fireEnablementChanged(DELETE);
		}
	}
	/**
	 * Checks to see if the "selectable" state (can select) has changed and if
	 * so fire an enablement changed notification.
	 */
	private void checkSelectable() {