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%D \module
%D [ file=strc-des,
%D version=2008.10.20,
%D title=\CONTEXT\ Structure Macros,
%D subtitle=Descriptions,
%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 / Descriptions}
\unprotect
\installcorenamespace{description}
\installcommandhandler \??description {description} \??description
\let\setupdescriptions\setupdescription
% \setupdescriptions % check with old
% [\c!alternative=\descriptionparameter\c!location,
% \c!location=\v!left]
\setupdescriptions % check with old
[\c!alternative=\v!left,
\c!headstyle=\v!bold,
\c!titlestyle=\v!bold,
%\c!style=,
%\c!color=,
%\c!headcolor=,
%\c!titlecolor=,
\c!width=7em,
\c!distance=1em,
\c!titledistance=0.5em,
%\c!hang=,
%\c!sample=,
%\c!align=,
%\c!headalign=,
\c!margin=\v!no,
\c!before=\blank,
\c!inbetween=\blank,
\c!after=\blank,
\c!indentnext=\v!yes,
\c!indenting=\v!never,
\c!titleleft=(,
\c!titleright=),
%\c!closesymbol=,
\c!closecommand=\wordright,
\c!display=\v!yes,
%\c!command=,
\c!titlecommand=,
\c!expansion=\v!no,
%\c!xmlsetup=,
%\s!catcodes=,
\c!title=\v!yes,
%\c!text=,
]
\appendtoks
\ifx\currentdescriptionparent\empty
\defineconstruction[\currentdescription][\currentdescriptionparent][\s!handler=\v!description,\c!level=1]%
\else
\defineconstruction[\currentdescription][\s!handler=\v!description,\c!level=1]%
\fi
\setuevalue {\currentdescription}{\strc_descriptions_command{\currentdescription}}%
\setuevalue{\e!start\currentdescription}{\strc_descriptions_start {\currentdescription}}%
\setuevalue{\e!stop \currentdescription}{\strc_descriptions_stop}%
\to \everydefinedescription
\setvalue{\??constructioninitializer\v!description}%
{\let\currentdescription \currentconstruction
\let\constructionparameter \descriptionparameter
\let\detokenizedconstructionparameter\detokenizeddescriptionparameter
\let\letconstructionparameter \letdescriptionparameter
\let\useconstructionstyleandcolor \usedescriptionstyleandcolor
\let\setupcurrentconstruction \setupcurrentdescription
\edef\p_title{\constructionparameter\c!title}%
\ifx\p_title\v!yes
\settrue\c_strc_constructions_title_state
\else
\setfalse\c_strc_constructions_title_state
\fi}
% We keep the command variant around but rather would move to the
% start-stop one. Also, passing the title as argument has some
% history so we need to keep that as well.
\ifdefined\dotagsetdescription \else \let\dotagsetdescription\relax \fi
% \startdescription [reference] text \stopdescription
% \startdescription [reference]{title} text \stopdescription
% \startdescription [title=,title=,reference=] text \stopdescription
% A bit over the top, the optional title but mkii has it too.
\unexpanded\def\strc_descriptions_start#1%
{\begingroup
\strc_constructions_initialize{#1}%
\doifnextoptionalelse\strc_descriptions_start_yes\strc_descriptions_start_nop}
\unexpanded\def\strc_descriptions_start_yes[#1]%
{\doifassignmentelse{#1}\strc_descriptions_start_yes_assignment\strc_descriptions_start_yes_reference[#1]}
\unexpanded\def\strc_descriptions_start_yes_assignment[#1]% todo userdata
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference=,\c!title=,\c!bookmark=,\c!list=,#1][]%
\csname\??constructionstarthandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_start_yes_reference
{\ifconditional\c_strc_constructions_title_state
\expandafter\strc_descriptions_start_yes_titled
\else
\expandafter\strc_descriptions_start_yes_normal
\fi}
% \unexpanded\def\strc_descriptions_start_yes_titled[#1]#2% todo userdata
% {\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference={#1},\c!title={#2},\c!bookmark=,\c!list=][]%
% \csname\??constructionstarthandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_start_yes_titled[#1]%
{\doifnextbgroupelse
{\strc_descriptions_start_yes_titled_indeed[#1]}%
{\setfalse\c_strc_constructions_title_state
\strc_descriptions_start_yes_normal[#1]}}
\unexpanded\def\strc_descriptions_start_yes_titled_indeed[#1]#2% todo userdata
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference={#1},\c!title={#2},\c!bookmark=,\c!list=][]%
\csname\??constructionstarthandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_start_yes_normal[#1]% todo userdata
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference={#1},\c!title=,\c!bookmark=,\c!list=][]%
\csname\??constructionstarthandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_start_nop
{\ifconditional\c_strc_constructions_title_state
\expandafter\strc_descriptions_start_nop_titled
\else
\expandafter\strc_descriptions_start_nop_normal
\fi}
% \unexpanded\def\strc_descriptions_start_nop_titled#1%
% {\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference=,\c!title={#1},\c!bookmark=,\c!list=][]%
% \csname\??constructionstarthandler\currentconstructionhandler\endcsname}
% \csname\??constructionstarthandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_start_nop_titled
{\doifnextbgroupelse
{\strc_descriptions_start_nop_titled_indeed}%
{\setfalse\c_strc_constructions_title_state
\strc_descriptions_start_nop_normal}}%
\unexpanded\def\strc_descriptions_start_nop_titled_indeed#1%
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference=,\c!title={#1},\c!bookmark=,\c!list=][]%
\csname\??constructionstarthandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_start_nop_normal
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference=,\c!title=,\c!bookmark=,\c!list=][]%
\csname\??constructionstarthandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_stop
{\csname\??constructionstophandler\currentconstructionhandler\endcsname}
% \description [reference] text \par
% \description [reference] {title} text \par
\unexpanded\def\strc_descriptions_command#1%
{\begingroup
\strc_constructions_initialize{#1}%
\doifnextoptionalelse\strc_descriptions_yes\strc_descriptions_nop}
\unexpanded\def\strc_descriptions_yes
{\ifconditional\c_strc_constructions_title_state
\expandafter\strc_descriptions_yes_titled
\else
\expandafter\strc_descriptions_yes_normal
\fi}
\unexpanded\def\strc_descriptions_yes_titled[#1]#2%
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference={#1},\c!title={#2},\c!bookmark=,\c!list=][]%
\csname\??constructioncommandhandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_yes_titled[#1]%
{\doifnextbgroupelse
{\strc_descriptions_yes_titled_indeed[#1]}%
{\setfalse\c_strc_constructions_title_state
\strc_descriptions_yes_normal[#1]}}
\unexpanded\def\strc_descriptions_yes_titled_indeed[#1]#2%
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference={#1},\c!title={#2},\c!bookmark=,\c!list=][]%
\csname\??constructioncommandhandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_yes_normal[#1]%
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference={#1},\c!title=,\c!bookmark=,\c!list=][]%
\csname\??constructioncommandhandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_nop
{\ifconditional\c_strc_constructions_title_state
\expandafter\strc_descriptions_nop_titled
\else
\expandafter\strc_descriptions_nop_normal
\fi}
% \unexpanded\def\strc_descriptions_nop_titled#1%
% {\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference=,\c!title={#1},\c!bookmark=,\c!list=][]%
% \csname\??constructioncommandhandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_nop_titled
{\doifnextbgroupelse
{\strc_descriptions_nop_titled_indeed}%
{\setfalse\c_strc_constructions_title_state
\strc_descriptions_nop_normal}}
\unexpanded\def\strc_descriptions_nop_titled_indeed#1%
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference=,\c!title={#1},\c!bookmark=,\c!list=][]%
\csname\??constructioncommandhandler\currentconstructionhandler\endcsname}
\unexpanded\def\strc_descriptions_nop_normal
{\strc_constructions_register[\c!label={\descriptionparameter\c!text},\c!reference=,\c!title=,\c!bookmark=,\c!list=][]%
\csname\??constructioncommandhandler\currentconstructionhandler\endcsname}
%D Handlers:
\expandafter\let\csname\??constructionmainhandler \v!description\expandafter\endcsname\csname\??constructionmainhandler \v!construction\endcsname
\expandafter\let\csname\??constructioncommandhandler\v!description\expandafter\endcsname\csname\??constructioncommandhandler\v!construction\endcsname
\expandafter\let\csname\??constructiontexthandler \v!description\expandafter\endcsname\csname\??constructiontexthandler \v!construction\endcsname
\setvalue{\??constructioncommandhandler\v!description}%
{\dowithpar
{\csname\??constructionstarthandler\v!construction\endcsname}%
{\csname\??constructionstophandler \v!construction\endcsname\endgroup}}
\setvalue{\??constructionstarthandler\v!description}%
{\BeforePar{\csname\??constructionstarthandler\v!construction\endcsname}%
\GotoPar}
\setvalue{\??constructionstophandler\v!description}%
{\csname\??constructionstophandler\v!construction\endcsname
\endgroup}
\protect \endinput
|
