1 files changed, 0 insertions, 61 deletions
diff --git a/addon-sdk/source/lib/sdk/preferences/event-target.js b/addon-sdk/source/lib/sdk/preferences/event-target.js
deleted file mode 100644
index b64ba303c..000000000
--- a/addon-sdk/source/lib/sdk/preferences/event-target.js
+++ /dev/null
@@ -1,61 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-'use strict';
-
-module.metadata = {
-  "stability": "unstable"
-};
-
-const { Cc, Ci } = require('chrome');
-const { Class } = require('../core/heritage');
-const { EventTarget } = require('../event/target');
-const { Branch } = require('./service');
-const { emit, off } = require('../event/core');
-const { when: unload } = require('../system/unload');
-
-const prefTargetNS = require('../core/namespace').ns();
-
-const PrefsTarget = Class({
-  extends: EventTarget,
-  initialize: function(options) {
-    options = options || {};
-    EventTarget.prototype.initialize.call(this, options);
-
-    let branchName = options.branchName || '';
-    let branch = Cc["@mozilla.org/preferences-service;1"].
-        getService(Ci.nsIPrefService).
-        getBranch(branchName).
-        QueryInterface(Ci.nsIPrefBranch2);
-    prefTargetNS(this).branch = branch;
-
-    // provides easy access to preference values
-    this.prefs = Branch(branchName);
-
-    // start listening to preference changes
-    let observer = prefTargetNS(this).observer = onChange.bind(this);
-    branch.addObserver('', observer, false);
-
-    // Make sure to destroy this on unload
-    unload(destroy.bind(this));
-  }
-});
-exports.PrefsTarget = PrefsTarget;
-
-/* HELPERS */
-
-function onChange(subject, topic, name) {
-  if (topic === 'nsPref:changed') {
-    emit(this, name, name);
-    emit(this, '', name);
-  }
-}
-
-function destroy() {
-  off(this);
-
-  // stop listening to preference changes
-  let branch = prefTargetNS(this).branch;
-  branch.removeObserver('', prefTargetNS(this).observer, false);
-  prefTargetNS(this).observer = null;
-}