1 files changed, 107 insertions, 0 deletions
diff --git a/tools/addon-sdk-1.4/packages/addon-kit/lib/simple-prefs.js b/tools/addon-sdk-1.4/packages/addon-kit/lib/simple-prefs.js
new file mode 100644
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+++ b/tools/addon-sdk-1.4/packages/addon-kit/lib/simple-prefs.js
@@ -0,0 +1,107 @@
+/* ***** 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
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2010
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *  Hernan Rodriguez Colmeiro <colmeiro@gmail.com> (Original Author)
+ *  Erik Vold <erikvvold@gmail.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 ***** */
+
+const { Cc, Ci } = require("chrome");
+const observers = require("observer-service");
+const { EventEmitter } = require("events");
+const unload = require("unload");
+const prefService = require("preferences-service");
+const { jetpackID } = require("@packaging");
+
+const ADDON_BRANCH = "extensions." + jetpackID + ".";
+const BUTTON_PRESSED = jetpackID + "-cmdPressed";
+
+// XXX Currently, only Firefox implements the inline preferences.
+if (!require("xul-app").is("Firefox"))
+  throw Error("This API is only supported in Firefox");
+
+let branch = Cc["@mozilla.org/preferences-service;1"].
+             getService(Ci.nsIPrefService).
+             getBranch(ADDON_BRANCH).
+             QueryInterface(Ci.nsIPrefBranch2);
+
+const events = EventEmitter.compose({
+  constructor: function Prefs() {
+    // Log unhandled errors.
+    this.on("error", console.exception.bind(console));
+
+    // Make sure we remove all the listeners
+    unload.ensure(this);
+
+    this._prefObserver = this._prefObserver.bind(this);
+    this._buttonObserver = this._buttonObserver.bind(this);
+
+    // Listen to changes in the preferences
+    branch.addObserver("", this._prefObserver, false);
+
+    // Listen to clicks on buttons
+    observers.add(BUTTON_PRESSED, this._buttonObserver, this);
+  },
+  _prefObserver: function PrefsPrefObserver(subject, topic, prefName) {
+    if (topic == "nsPref:changed") {
+      this._emit(prefName, prefName);
+    }
+  },
+  _buttonObserver: function PrefsButtonObserver(subject, data) {
+    this._emit(data);
+  },
+  unload: function manager_unload() {
+    this._removeAllListeners("error");
+    branch.removeObserver("", this._prefObserver);
+ },
+})();
+
+const simple = Proxy.create({
+  get: function(receiver, pref) {
+    return prefService.get(ADDON_BRANCH + pref);
+  },
+  set: function(receiver, pref, val) {
+    prefService.set(ADDON_BRANCH + pref, val);
+  },
+  delete: function(pref) {
+    prefService.reset(ADDON_BRANCH + pref);
+    return true;
+  },
+  has: function(pref) {
+    return prefService.has(ADDON_BRANCH + pref);
+  }
+});
+
+exports.on = events.on;
+exports.removeListener = events.removeListener;
+exports.prefs = simple;