Bug 255229 [Viewers] [3.5] NPE in ColumnViewerToolTipSupport
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ViewerRow.java
* The location and bounds of the area where the text is drawn depends on
	 * various things (image displayed, control with SWT.CHECK)
	 * 
	 * @param index
	 *            the column index
	 * @return the bounds of the of the text area. May return <code>null</code>
	 *         if the underlying widget implementation doesn't provide this
	 *         information
	 * @since 3.4
	 */
	public Rectangle getTextBounds(int index) {
		return null;
	}
	
	/**
	 * Returns the location and bounds of the area where the image is drawn.
	 * 
	 * @param index
	 *            the column index
	 * @return the bounds of the of the image area. May return <code>null</code>
	 *         if the underlying widget implementation doesn't provide this
	 *         information
	 * @since 3.4
	 */
	public Rectangle getImageBounds(int index) {
		return null;
	}
	
	/**
	 * Set the style ranges to be applied on the text label at the column index