Bug 147676 [regression]Visibility set in the first col will affect the second col
Description: Visibility set in the first col will affect the second col Steps to reproduce: 1. Insert a grid(3*3), insert contents to each cell. 2.Set the first col to hide all in visibility and preview Expected result: Only the first col is hidden. Actual result: The second col is hidden, too. If you set the second col in step2, the third col will disappear.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFAbstractLM.java
protected boolean handleVisibility( )
	{
		if ( isHidden( ) )
		{
			traverse( executor );
			return true;
		}
		else
		{
			return false;
		}
	}
	protected void traverse( IReportItemExecutor executor )
	{
		if ( executor != null )
		{
			while ( executor.hasNextChild( ) )
			{
				IReportItemExecutor child = (IReportItemExecutor) executor
						.getNextChild( );
				if ( child != null )
				{
					child.execute( );
					traverse( child );
					child.close( );
				}
			}
		}
	}
	protected abstract void cancelChildren( );