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%D \module
%D [ file=strc-blk,
%D version=2008.10.20,
%D title=\CONTEXT\ Structure Macros,
%D subtitle=Blockmoves,
%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 / Blockmoves}
\registerctxluafile{strc-blk}{1.001}
\unprotect
% we run on top of buffers and sections
%
% todo: prefix numbers (needs further integration elsewhere)
% check functionality
% alternative files (needs further integration elsewhere)
%
% order matters: \c!before (think of: \c!before=\startitemize)
%
% no \endgroups
\installcorenamespace {block}
\installcorenamespace {blocktemp}
\installcommandhandler \??block {block} \??block
\appendtoks
\ctxcommand{definestructureblock("\currentblock")}%
\setuevalue{\e!begin\currentblock}{\dodoubleempty\strc_blocks_begin[\currentblock]}%
\setuevalue{\e!end \currentblock}{}%
\to \everydefineblock
\unexpanded\def\strc_blocks_begin[#1][#2]%
{\normalexpanded{\buff_pickup{@block@}{\e!begin#1}{\e!end#1}}
{}% before
{\ctxcommand{savestructureblock("#1","#2","@block@")}}%
\plusone}% after
\let\strc_blocks_setup\relax
\unexpanded\def\dostarthiddenblock % called at lua end
{\startnointerference
\dostartnormalblock}
\unexpanded\def\dostophiddenblock % called at lua end
{\dostopnormalblock
\stopnointerference}
\unexpanded\def\dostartnormalblock#1% called at lua end
{\bgroup
\visibletrue % will change
\edef\currentblock{#1}%
\strc_blocks_setup
\let\strc_blocks_setup\relax
\blockparameter\c!before
\useblockstyleandcolor\c!style\c!color % maybe moev one line up (font spacing)
\blockparameter\c!inner % better \c!setups
\ignorespaces}
\unexpanded\def\dostopnormalblock % called at lua end
{\removeunwantedspaces
\blockparameter\c!after
\par % todo: alternative = text, paragraph
\egroup}
\def\strc_blocks_set_state[#1][#2][#3]% state name tag
{\ctxcommand{setstructureblockstate("#1","#2","#3")}}
\def\strc_blocks_select[#1][#2][#3][#4]% state name tag setups
{\bgroup
\doifassignmentelse{#3}
{\getparameters[\??blocktemp][\c!criterium=\v!text,#3]%
\def\strc_blocks_setup{\setupcurrentblock[#3]}%
\ctxcommand{selectstructureblock("#1","#2","","\csname\??blocktemp\c!criterium\endcsname")}}
{\getparameters[\??blocktemp][\c!criterium=\v!text,#4]%
\def\strc_blocks_setup{\setupcurrentblock[#4]}%
\ctxcommand{selectstructureblock("#1","#2","#3","\csname\??blocktemp\c!criterium\endcsname")}}%
\egroup}
% hide : save, if [+] also hidden execute
% keep : save and normal execute
% use : normal execute unless [-]
% process: hidden execute unless [-]
% select : idem use
\unexpanded\def\hideblocks {\dotripleempty \strc_blocks_set_state[hide]}
\unexpanded\def\keepblocks {\dotripleempty \strc_blocks_set_state[keep]}
\unexpanded\def\useblocks {\doquadrupleempty\strc_blocks_select [use]}
\unexpanded\def\processblocks{\doquadrupleempty\strc_blocks_select [process]}
\unexpanded\def\selectblocks {\doquadrupleempty\strc_blocks_select [use]}
\protect \endinput
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