How to implement "code-folding" in my SynEditMemo?
lazarus / 31-LCL

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dkjMusic · 2011-09-15 21:28

I have a TSynMemo with text as shown below. How do I implement folding
of, e.g., the text between "Melting Point" and the last separator
"-----------------..." in that block, and of  the text between
"Boiling Point" and the last separator "-----------------..." in its
block.

Do I somehow add my own TSynHighlighter? If so, how do I construct
such an animal?

Melting Point
Melting Point [°C]
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-94.3
Patent; Kennedy, Michael T.; US2008/75777; (2008); (A1) English.
Timmermans; Chem.Zentralbl.; vol. 82; nb. II; (1911); p. 1015.
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-173
Lesikar; Journal of Physical Chemistry; vol. 80; (1976); p. 1005.
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-95.35
Rosso et al.; Comptes Rendus des Seances de l'Academie des Sciences,
Serie C:
Sciences Chimiques;vol. 281; (1975); p. 699.
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Boiling Point
Boiling Point [°C] Pressure [Torr]                  
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56
Patent; Dabdoub, Atif M.; US2006/9654; (2006); (A1) English.
Geller etal.; J. Appl. Chem. USSR (Engl. Transl.); vol. 49; (1976); p.
614,630,631.
Rozenberg; Gorin; J. Appl. Chem. USSR (Engl. Transl.); vol. 44;
(1971); p.
389,382.
Nandibewoor; Raju; Journal of the Indian Chemical Society; vol.
55;(1978); p.
1284.
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56.2
Patent; Kennedy, Michael T.; US2008/75777; (2008); (A1) English.
Moroto; Watanabe; Nippon Kagaku Kaishi; (1972); p. 2317,2318.
Lemonds;McClellan; Analytical Chemistry; vol. 45; (1973); p.
1455,1457.
Bougard;Jadot; Journal of Chemical Thermodynamics; vol. 9; (1977); p.
491,492,493.
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Martin_fr · 2011-09-15 21:49

Yes, folding is provided by the highlighter (except the latest trunk,
can fold the current selection, but I have only tested that with
pascal highlighter, yet it should work anyway)

pascal, html, xml, diff, and lfm hghlighter currently provide folding.

The diff and lfm are the 2 simpler ones, so they can serve as example.

An introduction, including create your own:
http://wiki.lazarus.freepascal.org/SynEdit_Highlighter

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dkjMusic · 2011-09-15 22:02

Quote from: Martin_fr on September 15, 2011, 11:49:44 pmYes, folding
is provided by the highlighter (except the latest trunk, can fold the
current selection, but I have only tested that with pascal
highlighter, yet it should work anyway)

pascal, html, xml, diff, and lfm hghlighter currently provide folding.

The diff and lfm are the 2 simpler ones, so they can serve as example.

An introduction, including create your own:
http://wiki.lazarus.freepascal.org/SynEdit_Highlighter
Martin, as always, I appreciate your swift and helpful replies. I'll
study the link you gave.

While I (hopefully) have you on the line, if I want a context popup
menu for a TSynEditMemo which has the basic edit functions (Undo,
Cut,...Select All), do I write it myself or is there code somewhere I
can borrow, or a SynEdit option? The keyboard shortcuts work fine for
this, but I'm a mouse addict. I found an About.com article on
implementing for Delphi's TRichEdit, so I'll use that if there isn't a
better alternative.

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Martin_fr · 2011-09-15 23:06

Just drop a popupmenu on the form, and assign it to synedit.popupmenu?
Then edit the popup.

If synmemo doesn't have it, use synedit