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%D \module
%D [ file=strc-bkm,
%D version=2009.04.01,
%D title=\CONTEXT\ Structure Macros,
%D subtitle=Bookmarks,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright=\PRAGMA]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
%D This might become scrn-bkm.mkiv.
\writestatus{loading}{ConTeXt Structure Macros / Bookmarks}
\registerctxluafile{strc-bkm}{1.001}
\unprotect
%D Due to requests I finally decided to support bookmarks, a
%D driver dependant way of showing tables of content. The most
%D simple way of support is hooking bookmark generation into
%D the existing list mechanisms. That way users can generate
%D bookmarks automatically, although its entirely valid to add
%D bookmarks by defining alternative ones. These will be added
%D at the appropriate place in the list.
% \hoofdstuk{het eerste hoofdstuk}
%
% \bookmark {de eerste bookmark} % optional overruled hoofdstuk
%
% .... text ....
%
% \placebookmarks [hoofdstuk,paragraaf,subparagraaf,subsubparagraaf,mylist]
% [open list]
%
% \bookmark[mylist]{whatever}
%D This will go away.
\let\flushpostponedbookmark\relax
%D We have better ways now.
\unexpanded\def\bookmark
{\dosingleempty\dobookmark}
\def\dobookmark[#1]#2%
{\begingroup
\simplifycommands
\ctxlua{structures.bookmarks.overload("#1",\!!bs\detokenize\expandafter{\normalexpanded{#2}}\!!es)}%
\endgroup}
%D Placement \unknown\ look how simple compared to \MKII:
\newtoks \everysetupbookmarks
\def\bookmarkparameter#1{\ifcsname\??bm#1\endcsname\csname\??bm#1\endcsname\fi}
\unexpanded\def\setupbookmarks[#1]%
{\getparameters[\??bm][#1]%
\the\everysetupbookmarks}
\unexpanded\def\placebookmarks
{\dotripleempty\doplacebookmarks}
% Use force to get titles in the bookmarklist. This is somewhat tricky as one
% does not want "Contents" in a table of contents but it has to be in the
% bookmark list.
\def\doplacebookmarks[#1][#2][#3]%
{\iflocation
\begingroup
\edef\askednames{#1}%
\edef\askedopened{#2}%
\ifx\askednames\empty
\edef\askednames{\getvalue{\??ih\v!content\c!list}}%
\fi
\ifx\askednames\empty
\let\askednames\v!all
\fi
\ifthirdargument
\getparameters[\??bm][#3]%
\else\ifsecondargument
\doifassignmentelse{#2}{\let\askedopened\empty\getparameters[\??bm][#2]}\donothing
\fi\fi
\ctxlua{structures.bookmarks.register {
names = "\askednames",
opened = "\askedopened",
force = "\bookmarkparameter\c!force",
number = "\bookmarkparameter\c!number",
}}%
\endgroup
\fi}
\setupbookmarks
[\c!force=\v!no, % it's easier to force that to inhibit
\c!number=\v!yes] % might become v!no
\appendtoks
\ctxlua{structures.bookmarks.setup {
separatorset = "\bookmarkparameter\c!numberseparatorset",
conversionset = "\bookmarkparameter\c!numberconversionset",
starter = \!!bs\bookmarkparameter\c!numberstarter\!!es,
stopper = \!!bs\bookmarkparameter\c!numberstopper\!!es,
segments = "\bookmarkparameter\c!numbersegments",
}}%
\to \everysetupbookmarks
% \prependtoks\ctxlua{structures.bookmarks.place()}\to\everystoptext % too late
% \prependtoks\ctxlua{structures.bookmarks.place()}\to\everylastbackendshipout % okay but not nice
\protect \endinput
% \starttext
% \setupinteraction[state=start]\setupinteractionscreen[option=bookmark]
% \placebookmarks[chapter,section,subsection][chapter]
% \chapter{First}
% \bookmark{The First Indeed}
% \section{alpha}
% \bookmark[chapter]{The First Indeed Again}
% \section{beta}
% \chapter{Second}
% \bookmark{The Second Indeed}
% \section{gamma \tex{radiation}}
% \subsection{a}
% \subsection{b}
% \section{delta}
% \section{epsilon}
% \chapter{Third \relax}
% \chapter{我〈能吞下玻璃而不傷身〉體。} % whatever that means
% \chapter{Idris Samawi Hamid ادريس سماوي حامد}
% \stoptext
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