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
public static int LEFT = 1 << 2;
	/**
	 * Constant denoting the cell to the right of the current one (value is 8).
	 */
	public static int RIGHT = 1 << 3;
	
	private static final String KEY_TEXT_LAYOUT = Policy.JFACE + "styled_label_key_"; 
	
	/**
	 * Create a new instance of the receiver on the row.
	 *
	 * @param row
	 * @param columnIndex
	 */
	ViewerCell(ViewerRow row, int columnIndex, Object element) {
		this.row = row;
		this.columnIndex = columnIndex;
		this.element = element;
	}
	/**
	 * Get the index of the cell.
	 *
	 * @return the index
	 */
	public int getColumnIndex() {
		return columnIndex;
	}
	/**
	 * Get the bounds of the cell.
	 *