From: Martin Sevior (msevior@physics.unimelb.edu.au)
Date: Mon Nov 11 2002 - 09:42:41 EST
On Mon, 11 Nov 2002, Dr William Bland wrote:
> On Mon, Nov 11, 2002 at 08:31:19PM +1100, Martin Sevior wrote:
> >
> > On Mon, 2002-11-11 at 20:33, Dr William Bland wrote:
> > > Hi all,
> > > Ok, I've got the hang of stepping through a document, and now I've
> > > successfully made changes to its piecetable. The missing link is
> > > re-displaying the document.
> > >
> > > The following code works, but I can only see the changes if I save and
> > > re-load the document. Otherwise the display doesn't get updated.
> > > Any hints gratefully received.
> > >
> > > Best wishes,
> > > Bill.
> > >
> > > PS: Note that I added PT_BufIndex::changeBufIndex(), but it just does
> > > what you would expect.
> > >
> >
> > Please don't expect abiword to work like this. We go to great lengths
> > stop this sort of direct manipulations of the piecetable.
> >
> > Use the accessor functions in Pd_Document.
>
> Ok, I changed it to do everything using the Pd_Document functions and now
> it works fine. I'm learning (slowly).
>
Great! What you see on the screen is the fp* (Format Physical) classes
interpretation of the fl_* (Format Layout) classes interpretations of the
piecetable.
Manipulations of the piecetable through pd_Document methods get translated
into action on these classes via the fl_DocListener class.
The manipulations on the piectable are also recorded into a Journal which
gives the ability to unroll all the changes via undo/redo.
Cheers
Martin
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