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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 ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\writestatus{loading}{ConTeXt Structure Macros / Bookmarks}
\registerctxluafile{strc-bkm}{1.001}
\unprotect
%D Bookmarks are a very viewer dependent feature. They are mostly used
%D as additional table of contents and therefore relate directly to lists.
%D
%D A bookmark list is added to the document only when interaction is
%D enabled. The given lists are bookmarked and a second argument specifies
%D the opened bookmark trees.
%D
%D \starttyping
%D \placebookmarks
%D [chapter,section,subsection,mylist]
%D [chapter]
%D \stoptyping
%D
%D You can overloads the last set bookmark in a sectioning command:
%D
%D \starttyping
%D \chapter {the first chapter}
%D \bookmark {the first bookmark}
%D \stoptyping
%D
%D However, in practice you can better use \type {\startchapter} and set the
%D \type {bookmark} parameter.
%D
%D You can add entries to the bookmarklist:
%D
%D \starttyping
%D \bookmark[mylist]{whatever}
%D \stoptyping
%D
%D Use force to get titles in the bookmarklist. This is somewhat tricky as
%D one does not want "Contents" in a table of contents but it has to be in
%D the bookmark list.
\installcorenamespace{bookmark}
\installsetuponlycommandhandler \??bookmark {bookmark} % installdirectparametersethandler
\setupbookmark
[\c!force=\v!no, % it's easier to force that to inhibit
\c!number=\v!yes, % might become v!no
\c!sectionblock=\v!no] % show sectionblock level + title
\let\setupbookmarks\setupbookmark
\unexpanded\def\bookmark
{\dosingleempty\strc_bookmarks_bookmark}
\def\strc_bookmarks_bookmark
{\iflocation
\expandafter\strc_bookmarks_bookmark_yes
\else
\expandafter\strc_bookmarks_bookmark_nop
\fi}
\def\strc_bookmarks_bookmark_yes[#1]#2%
{\begingroup
\simplifycommands
\ifnum\thenamedheadlevel{#1}>\zerocount
\clf_overloadbookmark{#1}{\detokenize\expandafter{\normalexpanded{#2}}}%
\else
\strc_lists_write_to[#1][]{#2}{}% todo: a dedicated bookmark writer
\fi
\endgroup}
\def\strc_bookmarks_bookmark_nop[#1]#2%
{}
\unexpanded\def\placebookmarks
{\dotripleempty\strc_bookmarks_place}
\def\strc_bookmarks_place
{\iflocation
\expandafter\strc_bookmarks_place_yes
\else
\expandafter\gobblethreeoptionals
\fi}
\let\m_bookmarks_names \empty
\let\m_bookmarks_opened\empty
\def\strc_bookmarks_place_yes[#1][#2][#3]%
{\begingroup
\edef\m_bookmarks_names{#1}%
\edef\m_bookmarks_opened{#2}%
\ifx\m_bookmarks_names\empty
\edef\m_bookmarks_names{\namedlistparameter\v!content\c!list}%
\fi
\ifx\m_bookmarks_names\empty
\let\m_bookmarks_names\v!all
\fi
\ifthirdargument
\setupcurrentbookmark[#3]% no every so not all possible
\else\ifsecondargument
\doifelseassignment{#2}{\let\m_bookmarks_opened\empty\setupcurrentbookmark[#2]}\donothing
\fi\fi
\clf_registerbookmark
names {\m_bookmarks_names}%
opened {\m_bookmarks_opened}%
force {\bookmarkparameter\c!force}%
number {\bookmarkparameter\c!number}%
\relax
\endgroup}
\appendtoks
\clf_setupbookmarks
separatorset {\bookmarkparameter\c!numberseparatorset}%
conversionset {\bookmarkparameter\c!numberconversionset}%
starter {\bookmarkparameter\c!numberstarter}%
stopper {\bookmarkparameter\c!numberstopper}%
segments {\bookmarkparameter\c!numbersegments}%
showblocktitle {\bookmarkparameter\c!sectionblock}%
\relax
\to \everysetupbookmark
%D There is a plugin mechanism but this is for experts only. The intermediate
%D data structures are stable.
%D
%D \starttyping
%D \startluacode
%D structures.bookmarks.installhandler("check before","before",function(levels)
%D logs.report("extra bookmarks","before (normal bookmarks)")
%D inspect(levels)
%D logs.report("extra bookmarks","before (extra bookmarks)")
%D inspect(structures.bookmarks.extras.get())
%D return levels
%D end)
%D structures.bookmarks.installhandler("check after", "after", function(levels)
%D logs.report("extra bookmarks","after (merged bookmarks)")
%D inspect(levels)
%D return levels
%D end)
%D \stopluacode
%D \starttyping
%D
%D This mechanism was added when bookmark inclusion became (optional) part of graphic
%D inclusion (which is needed by Taco).
%D
%D \starttyping
%D \getfiguredimensions[somefile.pdf]
%D \dorecurse {\noffigurepages} {
%D \startTEXpage
%D \externalfigure[somefile.pdf][interaction=bookmark,page=\recurselevel]
%D \stopTEXpage
%D }
%D \starttyping
\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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