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/ViewerCell.java
ViewerCell cell = row.getCellAtVisualIndex(columnIndex);
				if( cell != null ) {
					while( cell != null ) {
						if( cell.isVisible() ) {
							break;
						}
						columnIndex += modifier;
						cell = row.getCellAtVisualIndex(columnIndex);
						if( cell == null ) {
							break;
						}
					}
				}
				return cell;
			}
		}
		return null;
	}
	/**
	 * @return the row
	 */
	public ViewerRow getViewerRow() {
		return row;
	}
	/**
	 * The location and bounds of the area where the text is drawn depends on
	 * various things (image displayed, control with SWT.CHECK)
	 *
	 * @return The bounds of the of the text area. May return <code>null</code>
	 *         if the underlying widget implementation doesn't provide this