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
* <code>CellEditor</code> method selects all of the current text.
	 */
	public void performSelectAll() {
		text.selectAll();
		checkSelection();
		checkDeleteable();
	}
	/**
	 * Return the text control managed by this cell editor. Public access to
	 * this control has been added so that clients can install content proposal
	 * adapters on the control.
	 * 
	 * @return the text control managed by this cell editor.
	 * @since 3.2
	 */
	public Text getTextControl() {
		return text;
	}
	/**
	 * Return the decorated field managed by this cell editor. This field can be
	 * used to add decorations on either side of the editor.
	 * 
	 * @return the decorated field installed as the cell editor.
	 * @since 3.2
	 */
	public DecoratedField getDecoratedField() {
		return decoratedField;
	}
}