Bug 224428 [Viewers] Add set/getStyleRanges to ViewerRow
20080327 set/getStyleRenges are on ViewerCell, using the data element on the row to store the ranges. They use a private constant as key. As an implementor of a ViewerRow, you want to get access to the styled ranges. ViewerCell is not implementable. The correct way therefor would be to also add set/getStyleRenges to ViewerRow where implementors can use it or even override it (if their widget supports styled ranges)
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ViewerRow.java
*/
	public static final int ABOVE = 1;
	/**
	 * Constant denoting the row below the current one (value is 2).
	 * 
	 * @see #getNeighbor(int, boolean)
	 */
	public static final int BELOW = 2;
	/**
	 * Get the bounds of the entry at the columnIndex,
	 * 
	 * @param columnIndex
	 * @return {@link Rectangle}
	 */
	public abstract Rectangle getBounds(int columnIndex);
	/**
	 * Return the bounds for the whole item.
	 * 
	 * @return {@link Rectangle}
	 */
	public abstract Rectangle getBounds();
	/**
	 * Return the item for the receiver.
	 * 
	 * @return {@link Widget}
	 */
	public abstract Widget getItem();
	/**
	 * Return the number of columns for the receiver.
	 *