Bug 199834 Enable access to IContent object in IReportItemPresentation layer
In IReportItemPresentation layer, the extended item may want to access properties from current IContent object, for example, bookmark, content style. So we need expose the content object in this layer.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/presentation/LocalizedContentVisitor.java
BufferedInputStream bin = in instanceof BufferedInputStream
				? (BufferedInputStream) in
				: new BufferedInputStream( in );
		ByteArrayOutputStream out = new ByteArrayOutputStream( 1024 );
		byte[] buffer = new byte[1024];
		int readSize = 0;
		try
		{
			readSize = bin.read( buffer );
			while ( readSize != -1 )
			{
				out.write( buffer, 0, readSize );
				readSize = bin.read( buffer );
			}
		}
		catch ( IOException ex )
		{
			logger.log( Level.SEVERE, ex.getMessage( ), ex );
		}
		return out.toByteArray( );
	}
	
	protected void handleOnRender( IContent content )
	{
		if ( content.getGenerateBy( ) != null )
		{
			onRenderVisitor.onRender( content );
		}
	}
}