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if not modules then modules = { } end modules ['strc-itm'] = {
version = 1.001,
comment = "companion to strc-itm.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local structures = structures
local itemgroups = structures.itemgroups
local jobpasses = job.passes
local implement = interfaces.implement
local setvariable = jobpasses.save
local getvariable = jobpasses.getfield
local texsetcount = tex.setcount
local texsetdimen = tex.setdimen
local f_stamp = string.formatters["itemgroup:%s:%s"]
local counts = table.setmetatableindex("number")
local c_strc_itemgroups_max_items = tex.iscount("c_strc_itemgroups_max_items")
local d_strc_itemgroups_max_width = tex.isdimen("d_strc_itemgroups_max_width")
-- We keep the counter at the Lua end so we can group the items within
-- an itemgroup which in turn makes for less passes when one itemgroup
-- entry is added or removed.
local trialtypesetting = context.trialtypesetting
local function analyzeitemgroup(name,level)
local n = counts[name]
if level == 1 then
n = n + 1
counts[name] = n
end
local stamp = f_stamp(name,n)
texsetcount(c_strc_itemgroups_max_items,getvariable(stamp,level,1,0))
texsetdimen(d_strc_itemgroups_max_width,getvariable(stamp,level,2,0))
end
local function registeritemgroup(name,level,nofitems,maxwidth)
local n = counts[name]
if not trialtypesetting() then
-- no trialtypsetting
setvariable(f_stamp(name,n), { nofitems, maxwidth }, level)
elseif level == 1 then
counts[name] = n - 1
end
end
implement {
name = "analyzeitemgroup",
actions = analyzeitemgroup,
arguments = { "string", "integer" }
}
implement {
name = "registeritemgroup",
actions = registeritemgroup,
arguments = { "string", "integer", "integer", "dimen" }
}
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