Bug 315035 [Automation][Regression]Error happened while merge cells in grid when preview as pdf/ppt/ps
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/nLayout/area/impl/TableLayout.java
private RowArea currentRow;
	
	private boolean isRTL = false;
	
	public TableLayout( ITableContent tableContent, TableLayoutInfo layoutInfo,
			int startCol, int endCol )
	{
		this.tableContent = tableContent;
		this.layoutInfo = layoutInfo;
		this.startCol = startCol;
		this.endCol = endCol;
		if ( tableContent != null )
		{
			isRTL = tableContent.isRTL( );
		
		}
	}
	public void setUnresolvedRow( RowArea row )
	{
		unresolvedRow = row;
	}
	
	protected int resolveBottomBorder( CellArea cell )
	{
		IStyle tableStyle = tableContent.getComputedStyle( );
		IContent cellContent = cell.getContent( );
		IStyle columnStyle = getColumnStyle( cell.getColumnID( ) );
		IStyle cellContentStyle = cellContent.getComputedStyle( );
		IStyle rowStyle = ( (IContent) cellContent.getParent( ) ).getComputedStyle( );