1 files changed, 90 insertions, 0 deletions
diff --git a/tools/addon-sdk-1.3/packages/api-utils/lib/utils/registry.js b/tools/addon-sdk-1.3/packages/api-utils/lib/utils/registry.js
new file mode 100644
index 0000000..1d2d8c6
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+++ b/tools/addon-sdk-1.3/packages/api-utils/lib/utils/registry.js
@@ -0,0 +1,90 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Jetpack.
+ *
+ * The Initial Developer of the Original Code is
+ * the Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Irakli Gozalishvili <gozala@mozilla.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+"use strict";
+
+const { EventEmitter } = require('../events');
+const unload = require('../unload');
+
+const Registry = EventEmitter.compose({
+  _registry: null,
+  _constructor: null,
+  constructor: function Registry(constructor) {
+    this._registry = [];
+    this._constructor = constructor;
+    this.on('error', this._onError = this._onError.bind(this));
+    unload.ensure(this, "_destructor");
+  },
+  _destructor: function _destructor() {
+    let _registry = this._registry.slice(0);
+    for each (let instance in _registry)
+      this._emit('remove', instance);
+    this._registry.splice(0);
+  },
+  _onError: function _onError(e) {
+    if (!this._listeners('error').length)
+      console.error(e);
+  },
+  has: function has(instance) {
+    let _registry = this._registry;
+    return (
+      (0 <= _registry.indexOf(instance)) ||
+      (instance && instance._public && 0 <= _registry.indexOf(instance._public))
+    );
+  },
+  add: function add(instance) {
+    let { _constructor, _registry } = this; 
+    if (!(instance instanceof _constructor))
+      instance = new _constructor(instance);
+    if (0 > _registry.indexOf(instance)) {
+      _registry.push(instance);
+      this._emit('add', instance);
+      return instance;
+    }
+  },
+  remove: function remove(instance) {
+    let _registry = this._registry;
+    let index = _registry.indexOf(instance)
+    if (0 <= index) {
+      this._emit('remove', instance);
+      _registry.splice(index, 1);
+    }
+  }
+});
+exports.Registry = Registry;
+