diff options
Diffstat (limited to 'tex/context/base/scrn-hlp.lua')
| -rw-r--r-- | tex/context/base/scrn-hlp.lua | 238 |
1 files changed, 119 insertions, 119 deletions
diff --git a/tex/context/base/scrn-hlp.lua b/tex/context/base/scrn-hlp.lua index 5f8368c6d..06abb3237 100644 --- a/tex/context/base/scrn-hlp.lua +++ b/tex/context/base/scrn-hlp.lua @@ -1,119 +1,119 @@ -if not modules then modules = { } end modules ['scrn-hlp'] = { - version = 1.001, - comment = "companion to scrn-hlp.mkiv", - author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", - copyright = "PRAGMA ADE / ConTeXt Development Team", - license = "see context related readme files" -} - -local format = string.format - -local help = { } -interactions.help = help - -local a_help = attributes.private("help") - -local copy_nodelist = node.copy_list -local hpack_nodelist = node.hpack - -local register_list = nodes.pool.register - -local nodecodes = nodes.nodecodes - -local hlist_code = nodecodes.hlist -local vlist_code = nodecodes.vlist - -local data, references = { }, { } - -local helpscript = [[ - function Hide_All_Help(prefix) { - var n = 0 - while (true) { - n += 1 ; - v = this.getField(prefix + n) ; - if (v) { - v.hidden = true ; - this.dirty = false ; - } else { - return ; - } - } - } -]] - -local template = "javascript(Hide_All_Help{help:}),action(show{help:%s})" - -function help.register(number,name,box) - if helpscript then - interactions.javascripts.setpreamble("HelpTexts",helpscript) - helpscript = false - end - local b = copy_nodelist(tex.box[box]) - register_list(b) - data[number] = b - if name and name ~= "" then - references[name] = number - structures.references.define("",name,format(template,number)) - end -end - -local function collect(head,used) - while head do - local id = head.id - if id == hlist_code then - local a = head[a_help] - if a then - if not used then - used = { a } - else - used[#used+1] = a - end - else - used = collect(head.list,used) - end - elseif id == vlist_code then - used = collect(head.list,used) - end - head = head.next - end - return used -end - -function help.collect(box) - if next(data) then - return collect(tex.box[box].list) - end -end - -commands.registerhelp = help.register - -function commands.collecthelp(box) - local used = help.collect(box) - if used then - local done = { } - context.startoverlay() - for i=1,#used do - local d = data[used[i]] - if d and not done[d] then - local box = hpack_nodelist(copy_nodelist(d)) - context(false,box) - done[d] = true - else - -- error - end - end - context.stopoverlay() - end -end - -function help.reference(name) - return references[name] or tonumber(name) or 0 -end - -function commands.helpreference(name) - context(references[name] or tonumber(name) or 0) -end - -function commands.helpaction(name) - context(template,references[name] or tonumber(name) or 0) -end +if not modules then modules = { } end modules ['scrn-hlp'] = {
+ version = 1.001,
+ comment = "companion to scrn-hlp.mkiv",
+ author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+ copyright = "PRAGMA ADE / ConTeXt Development Team",
+ license = "see context related readme files"
+}
+
+local format = string.format
+
+local help = { }
+interactions.help = help
+
+local a_help = attributes.private("help")
+
+local copy_nodelist = node.copy_list
+local hpack_nodelist = node.hpack
+
+local register_list = nodes.pool.register
+
+local nodecodes = nodes.nodecodes
+
+local hlist_code = nodecodes.hlist
+local vlist_code = nodecodes.vlist
+
+local data, references = { }, { }
+
+local helpscript = [[
+ function Hide_All_Help(prefix) {
+ var n = 0
+ while (true) {
+ n += 1 ;
+ v = this.getField(prefix + n) ;
+ if (v) {
+ v.hidden = true ;
+ this.dirty = false ;
+ } else {
+ return ;
+ }
+ }
+ }
+]]
+
+local template = "javascript(Hide_All_Help{help:}),action(show{help:%s})"
+
+function help.register(number,name,box)
+ if helpscript then
+ interactions.javascripts.setpreamble("HelpTexts",helpscript)
+ helpscript = false
+ end
+ local b = copy_nodelist(tex.box[box])
+ register_list(b)
+ data[number] = b
+ if name and name ~= "" then
+ references[name] = number
+ structures.references.define("",name,format(template,number))
+ end
+end
+
+local function collect(head,used)
+ while head do
+ local id = head.id
+ if id == hlist_code then
+ local a = head[a_help]
+ if a then
+ if not used then
+ used = { a }
+ else
+ used[#used+1] = a
+ end
+ else
+ used = collect(head.list,used)
+ end
+ elseif id == vlist_code then
+ used = collect(head.list,used)
+ end
+ head = head.next
+ end
+ return used
+end
+
+function help.collect(box)
+ if next(data) then
+ return collect(tex.box[box].list)
+ end
+end
+
+commands.registerhelp = help.register
+
+function commands.collecthelp(box)
+ local used = help.collect(box)
+ if used then
+ local done = { }
+ context.startoverlay()
+ for i=1,#used do
+ local d = data[used[i]]
+ if d and not done[d] then
+ local box = hpack_nodelist(copy_nodelist(d))
+ context(false,box)
+ done[d] = true
+ else
+ -- error
+ end
+ end
+ context.stopoverlay()
+ end
+end
+
+function help.reference(name)
+ return references[name] or tonumber(name) or 0
+end
+
+function commands.helpreference(name)
+ context(references[name] or tonumber(name) or 0)
+end
+
+function commands.helpaction(name)
+ context(template,references[name] or tonumber(name) or 0)
+end
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