Bug 157262 Column visibility doesn't work properly in attached report in PDF
Column visibility doesn't work properly in attached report Steps to reproduce: 1.open the attached file 2.preview it in PDF Expected result: Column visibility works well in PDF Actual result: The column visibility of the second and third column of the inner grid in the cell(1,0) doesn't works
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableLM.java
String formats = column.getVisibleFormat( );
		if ( formats != null
				&& formats.length( ) > 0
				&& ( formats.toUpperCase( ).indexOf( format.toUpperCase( ) ) >= 0 || formats.toUpperCase( )
						.indexOf( BIRTConstants.BIRT_ALL_VALUE.toUpperCase( ) ) >= 0 ) )
		{
			return true;
		}
		return false;
	}
	public boolean addArea( IArea area )
	{
		if( area instanceof RowArea )
		{
			lastRowArea = (RowArea) area;
		}
		return super.addArea( area );
	}
	protected void updateAllUnresolvedCellArea(ArrayList lastDropCells )
	{
		removeDropCells(lastDropCells);
	}
	public void updateUnresolvedCell( int groupLevel, boolean dropAll )
	{
		String dropType = dropAll ? "all" : "detail"; 
		int dropValue = this.createDropID( groupLevel, dropType );
		removeDropAreaBySpan( dropValue );
		for ( int i = 0; i < this.columnNumber; i++ )
		{
			if ( currentRowContent[i] != null )