Bug 313297 XML data set fail in chart data preview
chart/org.eclipse.birt.chart.ui/src/org/eclipse/birt/chart/ui/swt/CustomPreviewTable.java
.getSystemColor( SWT.COLOR_LIST_BACKGROUND );
				}
			}
			updateScrollbars( );
		}
		public void updateScrollbars( )
		{
			
			int iMaxTableWidth = getMaxTableWidth( ) + SCROLL_HORIZONTAL_STEP;
			int iVisibleTableWidth = getVisibleTableWidth( );
			int iVisibleRows = 0;
			if ( this.isVisible( ) )
			{
				
				getHorizontalBar( ).setValues( iVisibleTableWidth
						+ iHiddenWidth,
						iVisibleTableWidth,
						iMaxTableWidth,
						SCROLL_HORIZONTAL_STEP,
						SCROLL_HORIZONTAL_STEP,
						SCROLL_HORIZONTAL_STEP );
				
				int iHeight = getTableSize( ).y;
				if ( iHeight == 0 )
				{
					iHeight = getParent( ).computeSize( SWT.DEFAULT,
							SWT.DEFAULT,
							true ).y;
				}