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
int count = getColumnCount();
		
		if (count == 0) {
			return 0;
		}
		for (int i = 0; i < count; i++) {
			if (getBounds(i).contains(point)) {
				return i;
			}
		}
		return -1;
	}
	/**
	 * Get a ViewerCell for the column at index.
	 * 
	 * @param column
	 * @return {@link ViewerCell} or <code>null</code> if the index is
	 *         negative.
	 */
	public ViewerCell getCell(int column) {
		if (column >= 0)
			return new ViewerCell((ViewerRow) clone(), column, getElement());
		return null;
	}
	/**
	 * Get the Control for the receiver.
	 * 
	 * @return {@link Control}
	 */
	public abstract Control getControl();