Bug 153943 [Viewers] Rename new API, e.g. RowPart -> ViewerRow
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/RowPart.java
* @return Cell
	 */
	public Cell getCell(Point point) {
		int index = getColumnIndex(point);
		
		if( index >= 0 ) {
			return new Cell(this,index);
		}
		return null;
	}
	
	/**
	 * Get the columnIndex of the point.
	 * @param point
	 * @return the column index or -1 if it cannot be found.
	 */
	public int getColumnIndex(Point point) {
		int count = getColumnCount();
		
		for(int i = 0; i < count; i++ ) {
			if( getBounds(i).contains(point) ) {
				return i;
			}
		}
		
		return -1;
	}
	
}