Mercurial > eldonilo > lightstring
annotate lightstring.js @ 105:fb50311997b5
Add EventEmitter.js lib
| author | Sonny Piers <sonny.piers@gmail.com> |
|---|---|
| date | Wed, 13 Jun 2012 12:48:06 +0200 |
| parents | f14558915187 |
| children | c06ec02217ee |
| rev | line source |
|---|---|
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1 'use strict'; |
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2 |
| 2 | 3 /** |
| 4 Copyright (c) 2011, Sonny Piers <sonny at fastmail dot net> | |
| 5 | |
| 6 Permission to use, copy, modify, and/or distribute this software for any | |
| 7 purpose with or without fee is hereby granted, provided that the above | |
| 8 copyright notice and this permission notice appear in all copies. | |
| 9 | |
| 10 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 11 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 12 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 13 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 14 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 15 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 16 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 17 */ | |
| 18 | |
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19 |
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20 var Lightstring = { |
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21 /** |
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22 * @namespace Holds XMPP namespaces. |
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23 * @description http://xmpp.org/xmpp-protocols/protocol-namespaces |
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24 */ |
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25 ns: { |
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26 streams: 'http://etherx.jabber.org/streams', |
| 72 | 27 jabber_client: 'jabber:client', |
| 28 xmpp_stanzas: 'urn:ietf:params:xml:ns:xmpp-stanzas' | |
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29 }, |
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30 /** |
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31 * @namespace Holds XMPP stanza builders. |
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32 */ |
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33 stanzas: { |
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34 stream: { |
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35 open: function(aService) { |
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36 return "<stream:stream to='" + aService + "'" + |
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37 " xmlns='" + Lightstring.ns['jabber_client'] + "'" + |
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38 " xmlns:stream='" + Lightstring.ns['streams'] + "'" + |
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39 " version='1.0'>"; |
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40 }, |
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41 close: function() { |
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42 return "</stream:stream>"; |
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43 } |
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44 }, |
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45 errors: { |
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46 iq: function(from, id, type, error) { |
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47 return "<iq to='" + from + "'" + |
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48 " id='" + id + "'" + |
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49 " type='error'>" + |
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50 "<error type='" + type + "'>" + |
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51 "<" + error + " xmlns='" + Lightstring.ns['xmpp_stanzas'] + "'/>" + //TODO: allow text content. |
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52 //TODO: allow text and payload. |
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53 "</error>" + |
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54 "</iq>"; |
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55 } |
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56 } |
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57 }, |
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58 /** |
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59 * @namespace Holds Lightstring plugins |
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60 */ |
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61 plugins: {}, |
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62 /** |
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63 * @private |
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64 */ |
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65 parser: new DOMParser(), |
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66 /** |
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67 * @private |
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68 */ |
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69 serializer: new XMLSerializer(), |
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70 /** |
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71 * @function Transforms a XML string to a DOM object. |
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72 * @param {String} aString XML string. |
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73 * @return {Object} Domified XML. |
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74 */ |
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75 XML2DOM: function(aString) { |
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76 var DOM = null; |
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77 try { |
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78 DOM = this.parser.parseFromString(aString, 'text/xml').documentElement; |
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79 } |
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80 catch (e) { |
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81 //TODO: error |
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82 } |
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83 finally { |
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84 return DOM; |
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85 }; |
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86 }, |
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87 /** |
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88 * @function Transforms a DOM object to a XML string. |
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89 * @param {Object} aString DOM object. |
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90 * @return {String} Stringified DOM. |
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91 */ |
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92 DOM2XML: function(aElement) { |
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93 var XML = null; |
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94 try { |
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95 XML = this.serializer.serializeToString(aElement); |
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96 } |
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97 catch (e) { |
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98 //TODO: error |
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99 } |
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100 finally { |
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101 return XML; |
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102 }; |
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103 }, |
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104 /** |
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105 * @function Get an unique identifier. |
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106 * @param {String} [aString] Prefix to put before the identifier. |
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107 * @return {String} Identifier. |
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108 */ |
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109 newId: (function() { |
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110 var id = 1024; |
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111 return function(prefix) { |
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112 if (typeof prefix === 'string') |
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113 return prefix + id++; |
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114 return '' + id++; |
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115 }; |
| 34 | 116 })() |
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117 }; |
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118 |
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119 /** |
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120 * @constructor Creates a new Lightstring connection |
| 99 | 121 * @param {String} [aService] The connection manager URL. |
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122 * @memberOf Lightstring |
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123 */ |
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124 Lightstring.Connection = function(aService) { |
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125 if (aService) |
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126 this.service = aService; |
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127 /** |
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128 * @namespace Holds connection events handlers |
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129 */ |
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130 this.handlers = {}; |
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131 /** |
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132 * @namespace Holds connection iq callbacks |
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133 */ |
| 59 | 134 this.callbacks = {}; |
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135 }; |
| 99 | 136 Lightstring.Connection.prototype = new EventEmitter(); |
| 137 /** | |
| 138 * @function Create and open a websocket then go though the XMPP authentification process. | |
| 139 * @param {String} [aJid] The JID (Jabber id) to use. | |
| 140 * @param {String} [aPassword] The associated password. | |
| 141 */ | |
| 142 Lightstring.Connection.prototype.connect = function(aJid, aPassword) { | |
| 143 this.emit('connecting'); | |
| 144 this.jid = new Lightstring.JID(aJid); | |
| 145 if (aPassword) | |
| 146 this.password = aPassword; | |
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147 |
| 99 | 148 if (!this.jid.bare) |
| 149 return; //TODO: error | |
| 150 if (!this.service) | |
| 151 return; //TODO: error | |
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152 |
| 99 | 153 function getProtocol(aURL) { |
| 154 var a = document.createElement('a'); | |
| 155 a.href = aURL; | |
| 156 return a.protocol.replace(':', ''); | |
| 157 } | |
| 158 var protocol = getProtocol(this.service); | |
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159 |
| 99 | 160 if (protocol.match('http')) |
| 161 this.connection = new Lightstring.BOSHConnection(this.service); | |
| 162 else if (protocol.match('ws')) | |
| 163 this.connection = new Lightstring.WebSocketConnection(this.service); | |
| 164 | |
| 165 this.connection.open(); | |
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166 |
| 99 | 167 var that = this; |
| 72 | 168 |
| 99 | 169 this.connection.once('open', function() { |
| 170 that.emit('open'); | |
| 171 }); | |
| 172 this.connection.on('out', function(stanza) { | |
| 173 that.emit('out', stanza); | |
| 174 }); | |
| 175 this.connection.on('in', function(stanza) { | |
| 176 var stanza = new Lightstring.Stanza(stanza); | |
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177 |
| 99 | 178 //FIXME: node-xmpp-bosh sends a self-closing stream:stream tag; it is wrong! |
| 179 that.emit('stanza', stanza); | |
| 180 | |
| 181 if (!stanza.DOM) | |
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182 return; |
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183 |
| 99 | 184 var name = stanza.DOM.localName; |
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185 |
| 99 | 186 //Authentication |
| 187 //FIXME SASL mechanisms and XMPP features can be both in a stream:features | |
| 188 if (name === 'features') { | |
| 189 //SASL mechanisms | |
| 190 if (stanza.DOM.firstChild.localName === 'mechanisms') { | |
| 191 stanza.mechanisms = []; | |
| 192 var nodes = stanza.DOM.getElementsByTagName('mechanism'); | |
| 193 for (var i = 0; i < nodes.length; i++) | |
| 194 stanza.mechanisms.push(nodes[i].textContent); | |
| 195 that.emit('mechanisms', stanza); | |
| 196 } | |
| 197 //XMPP features | |
| 198 else { | |
| 199 //TODO: stanza.features | |
| 200 that.emit('features', stanza); | |
| 201 } | |
| 202 } | |
| 203 else if (name === 'challenge') { | |
| 204 that.emit('challenge', stanza); | |
| 205 } | |
| 206 else if (name === 'failure') { | |
| 207 that.emit('failure', stanza); | |
| 208 } | |
| 209 else if (name === 'success') { | |
| 210 that.emit('success', stanza); | |
| 211 } | |
| 212 | |
| 213 //Iq callbacks | |
| 214 else if (name === 'iq') { | |
| 215 var payload = stanza.DOM.firstChild; | |
| 216 if (payload) | |
| 217 that.emit('iq/' + payload.namespaceURI + ':' + payload.localName, stanza); | |
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218 |
| 89 | 219 var id = stanza.DOM.getAttribute('id'); |
| 99 | 220 if (!(id && id in that.callbacks)) |
| 221 return; | |
| 222 | |
| 223 var type = stanza.DOM.getAttribute('type'); | |
| 224 if (type !== 'result' && type !== 'error') | |
| 225 return; //TODO: warning | |
| 226 | |
| 227 var callback = that.callbacks[id]; | |
| 228 if (type === 'result' && callback.success) | |
| 229 callback.success.call(that, stanza); | |
| 230 else if (type === 'error' && callback.error) | |
| 231 callback.error.call(that, stanza); | |
| 232 | |
| 233 delete that.callbacks[id]; | |
| 234 } | |
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235 |
| 99 | 236 else if (name === 'presence' || name === 'message') { |
| 237 that.emit(name, stanza); | |
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238 } |
| 99 | 239 }); |
| 240 }; | |
| 241 /** | |
| 242 * @function Send a message. | |
| 243 * @param {String|Object} aStanza The message to send. | |
| 244 * @param {Function} [aCallback] Executed on answer. (stanza must be iq) | |
| 245 */ | |
| 246 Lightstring.Connection.prototype.send = function(aStanza, aSuccess, aError) { | |
| 247 if (!(aStanza instanceof Lightstring.Stanza)) | |
| 248 var stanza = new Lightstring.Stanza(aStanza); | |
| 249 else | |
| 250 var stanza = aStanza; | |
| 251 | |
| 252 if (!stanza) | |
| 253 return; | |
| 254 | |
| 255 if (stanza.DOM.tagName === 'iq') { | |
| 256 var type = stanza.DOM.getAttribute('type'); | |
| 257 if (type !== 'get' || type !== 'set') | |
| 258 ; //TODO: error | |
| 259 | |
| 260 var callback = {success: aSuccess, error: aError}; | |
| 261 | |
| 262 var id = stanza.DOM.getAttribute('id'); | |
| 263 if (!id) { | |
| 264 var id = Lightstring.newId('sendiq:'); | |
| 265 stanza.DOM.setAttribute('id', id); | |
| 266 } | |
| 267 | |
| 268 this.callbacks[id] = callback; | |
| 269 | |
| 270 } | |
| 271 else if (aSuccess || aError) | |
| 272 ; //TODO: warning (no callback without iq) | |
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273 |
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274 |
| 99 | 275 //FIXME this.socket.send(stanza.XML); (need some work on Lightstring.Stanza) |
| 276 var fixme = Lightstring.DOM2XML(stanza.DOM); | |
| 277 stanza.XML = fixme; | |
| 278 this.connection.send(fixme); | |
| 279 this.emit('output', stanza); | |
| 280 }; | |
| 281 /** | |
| 282 * @function Closes the XMPP stream and the socket. | |
| 283 */ | |
| 284 Lightstring.Connection.prototype.disconnect = function() { | |
| 285 this.emit('disconnecting'); | |
| 286 var stream = Lightstring.stanzas.stream.close(); | |
| 287 this.socket.send(stream); | |
| 288 this.emit('XMLOutput', stream); | |
| 289 this.socket.close(); | |
| 290 }; | |
| 291 Lightstring.Connection.prototype.load = function() { | |
| 292 for (var i = 0; i < arguments.length; i++) { | |
| 293 var name = arguments[i]; | |
| 294 if (!(name in Lightstring.plugins)) | |
| 295 continue; //TODO: error | |
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296 |
| 99 | 297 var plugin = Lightstring.plugins[name]; |
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298 |
| 99 | 299 //Namespaces |
| 300 for (var ns in plugin.namespaces) | |
| 301 Lightstring.ns[ns] = plugin.namespaces[ns]; | |
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302 |
| 99 | 303 //Stanzas |
| 304 Lightstring.stanzas[name] = {}; | |
| 305 for (var stanza in plugin.stanzas) | |
| 306 Lightstring.stanzas[name][stanza] = plugin.stanzas[stanza]; | |
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307 |
| 99 | 308 //Handlers |
| 309 for (var handler in plugin.handlers) | |
| 310 this.on(handler, plugin.handlers[handler]); | |
| 72 | 311 |
| 99 | 312 //Methods |
| 313 this[name] = {}; | |
| 314 for (var method in plugin.methods) | |
| 315 this[name][method] = plugin.methods[method].bind(this); | |
| 316 | |
| 317 if (plugin.init) | |
| 318 plugin.init.apply(this); | |
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319 } |
| 99 | 320 }; |