-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local setmetatable = setmetatable; local pairs, ipairs = pairs, ipairs; local tostring, type = tostring, type; local t_concat = table.concat; local st = require "util.stanza"; module "dataforms" local xmlns_forms = 'jabber:x:data'; local form_t = {}; local form_mt = { __index = form_t }; function new(layout) return setmetatable(layout, form_mt); end function form_t.form(layout, data, formtype) local form = st.stanza("x", { xmlns = xmlns_forms, type = formtype or "form" }); if layout.title then form:tag("title"):text(layout.title):up(); end if layout.instructions then form:tag("instructions"):text(layout.instructions):up(); end for n, field in ipairs(layout) do local field_type = field.type or "text-single"; -- Add field tag form:tag("field", { type = field_type, var = field.name, label = field.label }); local value = (data and data[field.name]) or field.value; if value then -- Add value, depending on type if field_type == "hidden" then if type(value) == "table" then -- Assume an XML snippet form:tag("value") :add_child(value) :up(); else form:tag("value"):text(tostring(value)):up(); end elseif field_type == "boolean" then form:tag("value"):text((value and "1") or "0"):up(); elseif field_type == "fixed" then elseif field_type == "jid-multi" then for _, jid in ipairs(value) do form:tag("value"):text(jid):up(); end elseif field_type == "jid-single" then form:tag("value"):text(value):up(); elseif field_type == "text-single" or field_type == "text-private" then form:tag("value"):text(value):up(); elseif field_type == "text-multi" then -- Split into multiple <value> tags, one for each line for line in value:gmatch("([^\r\n]+)\r?\n*") do form:tag("value"):text(line):up(); end elseif field_type == "list-single" then local has_default = false; for _, val in ipairs(value) do if type(val) == "table" then form:tag("option", { label = val.label }):tag("value"):text(val.value):up():up(); if val.default and (not has_default) then form:tag("value"):text(val.value):up(); has_default = true; end else form:tag("option", { label= val }):tag("value"):text(tostring(val)):up():up(); end end elseif field_type == "list-multi" then for _, val in ipairs(value) do if type(val) == "table" then form:tag("option", { label = val.label }):tag("value"):text(val.value):up():up(); if val.default then form:tag("value"):text(val.value):up(); end else form:tag("option", { label= val }):tag("value"):text(tostring(val)):up():up(); end end end end if field.required then form:tag("required"):up(); end -- Jump back up to list of fields form:up(); end return form; end local field_readers = {}; function form_t.data(layout, stanza) local data = {}; for field_tag in stanza:childtags() do local field_type; for n, field in ipairs(layout) do if field.name == field_tag.attr.var then field_type = field.type; break; end end local reader = field_readers[field_type]; if reader then data[field_tag.attr.var] = reader(field_tag); end end return data; end field_readers["text-single"] = function (field_tag) local value = field_tag:child_with_name("value"); if value then return value[1]; end end field_readers["text-private"] = field_readers["text-single"]; field_readers["jid-single"] = field_readers["text-single"]; field_readers["jid-multi"] = function (field_tag) local result = {}; for value_tag in field_tag:childtags() do if value_tag.name == "value" then result[#result+1] = value_tag[1]; end end return result; end field_readers["text-multi"] = function (field_tag) local result = {}; for value_tag in field_tag:childtags() do if value_tag.name == "value" then result[#result+1] = value_tag[1]; end end return t_concat(result, "\n"); end field_readers["list-single"] = field_readers["text-single"]; field_readers["list-multi"] = function (field_tag) local result = {}; for value_tag in field_tag:childtags() do if value_tag.name == "value" then result[#result+1] = value_tag[1]; end end return result; end field_readers["boolean"] = function (field_tag) local value = field_tag:child_with_name("value"); if value then if value[1] == "1" or value[1] == "true" then return true; else return false; end end end field_readers["hidden"] = function (field_tag) local value = field_tag:child_with_name("value"); if value then return value[1]; end end return _M; --[=[ Layout: { title = "MUC Configuration", instructions = [[Use this form to configure options for this MUC room.]], { name = "FORM_TYPE", type = "hidden", required = true }; { name = "field-name", type = "field-type", required = false }; } --]=]