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
public boolean isPasteEnabled() {
		if (text == null || text.isDisposed())
			return false;
		return true;
	}
	/**
	 * The <code>TextCellEditor</code> implementation of this
	 * <code>CellEditor</code> method always returns <code>true</code>.
	 */
	public boolean isSaveAllEnabled() {
		if (text == null || text.isDisposed())
			return false;
		return true;
	}
	/**
	 * Returns <code>true</code> if this cell editor is able to perform the
	 * select all action.
	 * <p>
	 * This default implementation always returns <code>false</code>.
	 * </p>
	 * <p>
	 * Subclasses may override
	 * </p>
	 * 
	 * @return <code>true</code> if select all is possible, <code>false</code>
	 *         otherwise
	 */
	public boolean isSelectAllEnabled() {
		if (text == null || text.isDisposed())
			return false;