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util/dataforms.lua @ 2032:2714ccde2569
usermanager: Removed an unnecessary global access.
author | Waqas Hussain <waqas20@gmail.com> |
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date | Wed, 21 Oct 2009 11:41:11 +0500 |
parent | 1958:e2b0026143c4 |
child | 2061:e34fdca432a9 |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2009 Matthew Wild |
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3 -- Copyright (C) 2008-2009 Waqas Hussain |
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4 -- |
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5 -- This project is MIT/X11 licensed. Please see the |
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6 -- COPYING file in the source package for more information. |
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7 -- |
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8 |
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9 local setmetatable = setmetatable; |
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10 local pairs, ipairs = pairs, ipairs; |
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11 local tostring, type = tostring, type; |
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12 local t_concat = table.concat; |
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13 local st = require "util.stanza"; |
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14 |
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15 module "dataforms" |
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16 |
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17 local xmlns_forms = 'jabber:x:data'; |
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18 |
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19 local form_t = {}; |
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20 local form_mt = { __index = form_t }; |
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21 |
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22 function new(layout) |
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23 return setmetatable(layout, form_mt); |
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24 end |
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25 |
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26 function form_t.form(layout, data) |
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27 local form = st.stanza("x", { xmlns = xmlns_forms, type = "form" }); |
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28 if layout.title then |
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29 form:tag("title"):text(layout.title):up(); |
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30 end |
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31 if layout.instructions then |
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32 form:tag("instructions"):text(layout.instructions):up(); |
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33 end |
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34 for n, field in ipairs(layout) do |
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35 local field_type = field.type or "text-single"; |
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36 -- Add field tag |
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37 form:tag("field", { type = field_type, var = field.name, label = field.label }); |
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38 |
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39 local value = (data and data[field.name]) or field.value; |
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40 |
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41 -- Add value, depending on type |
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42 if field_type == "hidden" then |
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43 if type(value) == "table" then |
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44 -- Assume an XML snippet |
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45 form:tag("value") |
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46 :add_child(value) |
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47 :up(); |
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48 elseif value then |
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49 form:tag("value"):text(tostring(value)):up(); |
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50 end |
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51 elseif field_type == "boolean" then |
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52 form:tag("value"):text((value and "1") or "0"):up(); |
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53 elseif field_type == "fixed" then |
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54 |
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55 elseif field_type == "jid-multi" then |
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56 for _, jid in ipairs(value) do |
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57 form:tag("value"):text(jid):up(); |
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58 end |
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59 elseif field_type == "jid-single" then |
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60 form:tag("value"):text(value):up(); |
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61 elseif field_type == "text-single" or field_type == "text-private" then |
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62 form:tag("value"):text(value):up(); |
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63 elseif field_type == "text-multi" then |
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64 -- Split into multiple <value> tags, one for each line |
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65 for line in value:gmatch("([^\r\n]+)\r?\n*") do |
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66 form:tag("value"):text(line):up(); |
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67 end |
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68 elseif field_type == "list-single" then |
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69 for _, val in ipairs(value) do |
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70 if type(val) == "table" then |
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71 form:tag("option", { label = val.label }):tag("value"):text(val.value):up():up(); |
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72 else |
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73 form:tag("option", { label= val }):tag("value"):text(tostring(val)):up():up(); |
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74 end |
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75 end |
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76 end |
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77 |
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78 if field.required then |
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79 form:tag("required"):up(); |
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80 end |
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81 |
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82 -- Jump back up to list of fields |
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83 form:up(); |
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84 end |
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85 return form; |
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86 end |
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87 |
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88 local field_readers = {}; |
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89 |
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90 function form_t.data(layout, stanza) |
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91 local data = {}; |
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92 |
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93 for field_tag in stanza:childtags() do |
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94 local field_type = field_tag.attr.type; |
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95 |
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96 local reader = field_readers[field_type]; |
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97 if reader then |
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98 data[field_tag.attr.var] = reader(field_tag); |
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99 end |
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100 |
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101 end |
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102 return data; |
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103 end |
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104 |
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105 field_readers["text-single"] = |
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106 function (field_tag) |
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107 local value = field_tag:child_with_name("value"); |
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108 if value then |
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109 return value[1]; |
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110 end |
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111 end |
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112 |
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113 field_readers["text-private"] = |
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114 field_readers["text-single"]; |
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115 |
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116 field_readers["jid-single"] = |
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117 field_readers["text-single"]; |
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118 |
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119 field_readers["text-multi"] = |
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120 function (field_tag) |
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121 local result = {}; |
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122 for value_tag in field_tag:childtags() do |
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123 if value_tag.name == "value" then |
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124 result[#result+1] = value_tag[1]; |
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125 end |
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126 end |
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127 return t_concat(result, "\n"); |
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128 end |
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129 |
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130 field_readers["list-single"] = |
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131 field_readers["text-single"]; |
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132 |
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133 field_readers["boolean"] = |
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134 function (field_tag) |
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135 local value = field_tag:child_with_name("value"); |
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136 if value then |
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137 if value[1] == "1" or value[1] == "true" then |
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138 return true; |
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139 else |
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140 return false; |
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141 end |
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142 end |
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143 end |
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144 |
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145 field_readers["hidden"] = |
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146 function (field_tag) |
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147 local value = field_tag:child_with_name("value"); |
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148 if value then |
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149 return value[1]; |
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150 end |
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151 end |
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152 |
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153 return _M; |
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154 |
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155 |
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156 --[=[ |
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157 |
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158 Layout: |
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159 { |
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160 |
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161 title = "MUC Configuration", |
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162 instructions = [[Use this form to configure options for this MUC room.]], |
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163 |
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164 { name = "FORM_TYPE", type = "hidden", required = true }; |
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165 { name = "field-name", type = "field-type", required = false }; |
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166 } |
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167 |
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168 |
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169 --]=] |