Re: Association between ToC index object and its paragraph content

Hi Mikos,

Thank you for your emails and suggestions thus far.  I've played around
with this some more and one question remains.

If I get the actual index object:

  indeces = document.getDocumentIndexes()
  toc = indeces.getByName('Table of Content1') # Assume it exists!

and then I create a text range of the paragraphs that make up the ToC:

  index_pars = toc.Anchor 
  index_cursor = document.Text.createTextCursorByRange(index_pars)                            
  index_parenum = index_cursor.createEnumeration()                                            
  while index_parenum.hasMoreElements():                                                      
      index_par = index_parenum.nextElement()                                                 
      # index_par is a paragraph (XTextContext) that's a single in in the ToC 

How can I correlate these index_par objects with the paragraphs that I
visit using the document's paragraph enumeration:

  parenum = document.Text.createEnumeration()                                                     
  while parenum.hasMoreElements():                                                                
      par = parenum.nextElement()                                                                  
      # par is a paragraph (XTextContext) in the document

At some point a given `par` and `index_par` represent the same
paragraph in the document, but how do I know?  Or does such an
association not or very loosely exist?

Cheers,
Jens


On Thu, Dec 07, 2017 at 09:58:24AM +0100, Miklos Vajna wrote:
> Hi Jens,
>
> On Thu, Dec 07, 2017 at 06:04:08AM +0100, Jens Tröger <jens.troeger@light-speed.de> wrote:
> > While walking all paragraphs of a Writer document and visiting their text
> > content, I come across text portions (the Heading N) which have Bookmarks
> > whose name is something like “_Toc263250771”. However, when I walk the 
> > paragraphs and text portions that actually make up the ToC of the document
> > itself, I see no indication or reference to these bookmarks.
>
> Let's say you have a ToC, then a Heading 1 paragraphs, Foo.
>
> Then the ToC refers to hidden RefHeading bookmark for Foo. You can see
> this reference at an UNO API level. Basic code for this:
>
> oParas = ThisComponent.Text.createEnumeration
> oPara = oParas.nextElement ' Table of Contents
> oPara = oParas.nextElement ' Foo
> oPortions = oPara.createEnumeration
> oPortion = oPortions.nextElement
> xray oPortion.HyperlinkURL ' gives #__RefHeading___Toc...
>
> If you want to see the bookmarks the ToC refers to, it's similar:
>
> ...
> oPara = oParas.nextElement ' Foo
> oPortions = oPara.createEnumeration
> oPortion = oPortions.nextElement
> xray oPortion.TextPortionType ' gives Bookmark
> xray oPortion.Bookmark.Name ' gives #__RefHeading___Toc...
>
> In most cases if you see some information serialized into ODT, then you
> can assume the same information is available via the UNO API. You can
> always read (most of) the ODT filter in xmloff/ to see what exact UNO
> API is used to write a given ODT markup.
>
> Regards,
> Miklos

-- 
Jens Tröger
http://savage.light-speed.de/