Move Add-on SDK source to toolkit/jetpack

toolkit/jetpack/sdk/context-menu@2.js

@@ -0,0 +1,32 @@
+/* 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";
+
+const shared = require("toolkit/require");
+const { Item, Separator, Menu, Contexts, Readers } = shared.require("sdk/context-menu/core");
+const { setupDisposable, disposeDisposable, Disposable } = require("sdk/core/disposable")
+const { Class } = require("sdk/core/heritage")
+
+const makeDisposable = Type => Class({
+  extends: Type,
+  implements: [Disposable],
+  initialize: Type.prototype.initialize,
+  setup(...params) {
+    Type.prototype.setup.call(this, ...params);
+    setupDisposable(this);
+  },
+  dispose(...params) {
+    disposeDisposable(this);
+    Type.prototype.dispose.call(this, ...params);
+  }
+});
+
+exports.Separator = Separator;
+exports.Contexts = Contexts;
+exports.Readers = Readers;
+
+// Subclass Item & Menu shared classes so their items
+// will be unloaded when add-on is unloaded.
+exports.Item = makeDisposable(Item);
+exports.Menu = makeDisposable(Menu);