I've been trying different approaches to this problem for a few days, but keep running into dead ends.
I'll use some familiar objects to lay out my problem: I have Orders and Line Items. I'm printing a document of all Orders for a given day (a nightly report). Each Order has many Line Items, so the table of Line Items spans multiple pages. The header for each page has the report name in bold, then the order number below in a different font. I need to change the order number in the header (and start a new page in the document) whenever I start adding Line Items for a new Order to the PDF. I'm using a custom PageEvent for the header already. At one point, it looked like Chapters were perfect for what I needed, especially the "onChapter" method that is automatically triggered on PageEvent. Unfortunately, the users do NOT want a Table of Contents in their report, and I wasn't able to find a way to suppress this (from what I can see in the PdfDocument.add(Element element) code, displaying it isn't configurable). I thought maybe I could subclass PdfDocument, then realized that the only class I have access to is Document - I don't see a way to force iText to create an instance of my PdfDocument subclass instead of the usual class (no configurable factory, etc). Anyway, overriding the add(Element element) method would be awful, basically gutting the functionality. Not being able to use a custom subclass also prevents me from using a "updateHeaderSubtitle" method or something similar on my (imaginary) PdfDocument subclass. The only workable solution I've come up with yet is writing a special method on my PageEvent to update the header subtitle variable, then saving a reference to my PageEvent instance as I add it to the Document so I can access it later (every time I switch Orders). This (accessing methods on PageEvent directly) doesn't seem like it fits with the usual pattern for this library - is there another solution that I'm missing, that would fit in better with the general design? Meghan
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