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+++ b/plugins/receipts.js
@@ -0,0 +1,115 @@
+'use strict';
+
+/**
+  Copyright (c) 2011, Sonny Piers <sonny at fastmail dot net>
+  Copyright (c) 2012, Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/////////////////////////////////////////////////////////////////////////////////
+//XEP-0184: Message Delivery Receipts http://xmpp.org/extensions/xep-0184.html //
+/////////////////////////////////////////////////////////////////////////////////
+(function () {
+
+var ns = 'urn:xmpp:receipts';
+Lightstring.plugins['receipts'] = {
+  namespaces: {
+    receipts: ns
+  },
+  // features: [ns],
+  // methods: {
+  //   'received': function(aOnSuccess, aOnError) {
+  //   }
+  // }
+};
+Object.defineProperties(Lightstring.Stanza.prototype, {
+  'receipt': {
+    get : function() {
+      var receiptEl;
+      for (var i = 0, length = this.el.childNodes.length; i < length; i++) {
+        if (this.el.childNodes[i].namespaceURI === ns) {
+          receiptEl = this.el.childNodes[i];
+          break;
+        }
+      }
+      if (!receiptEl)
+        return null;
+
+      var receipt = {name: receiptEl.localName};
+
+      var id = receiptEl.getAttribute('id');
+      if (id)
+        receipt.id = id; 
+
+      return receipt;
+    },
+    set: function(aProps) {
+      var receipt = Lightstring.doc.createElementNS(ns, aProps.name);
+      if (aProps.id)
+        receipt.setAttribute('id', aProps.id);
+
+      var receiptEl;
+      for (var i = 0, length = this.el.childNodes.length; i < length; i++) {
+        if (this.el.childNodes[i].namespaceURI === ns) {
+          receiptEl = this.el.childNodes[i];
+          break;
+        }
+      }
+      if (receiptEl)
+        this.el.removeChild(receiptEl);
+
+      this.el.appendChild(receipt);
+    },
+    enumerable : true,  
+    configurable : true
+  },
+  'request': {
+    get : function() {
+      var receipt = this.receipt;
+      if (!receipt || (receipt.name !== 'request'))
+        return null;
+
+      return receipt;
+    },
+    set: function(aBool) {
+      this.receipt = {name: 'request'}
+      if (!this.id)
+        this.id = Lightstring.id();
+    },
+    enumerable : true,  
+    configurable : true
+  },
+  'received': {
+    get : function() {
+      var receipt = this.receipt;
+      if (!receipt || (receipt.name !== 'received'))
+        return null;
+
+      return receipt;
+    },
+    set: function(aId) {
+      this.receipt = {name: 'received', id: aId}
+    },
+    enumerable : true,  
+    configurable : true
+  },
+});
+Lightstring.Stanza.prototype.replyWithReceived = function(aProps) {
+  var reply = this.reply(aProps);
+  reply.received = this.id;
+
+  return reply;
+};
+
+})();
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