1 files changed, 31 insertions, 0 deletions
diff --git a/devtools/shared/fronts/preference.js b/devtools/shared/fronts/preference.js
new file mode 100644
index 000000000..22b3f912f
--- /dev/null
+++ b/devtools/shared/fronts/preference.js
@@ -0,0 +1,31 @@
+/* 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 {preferenceSpec} = require("devtools/shared/specs/preference");
+const protocol = require("devtools/shared/protocol");
+
+const PreferenceFront = protocol.FrontClassWithSpec(preferenceSpec, {
+  initialize: function (client, form) {
+    protocol.Front.prototype.initialize.call(this, client);
+    this.actorID = form.preferenceActor;
+    this.manage(this);
+  },
+});
+
+const _knownPreferenceFronts = new WeakMap();
+
+exports.getPreferenceFront = function (client, form) {
+  if (!form.preferenceActor) {
+    return null;
+  }
+
+  if (_knownPreferenceFronts.has(client)) {
+    return _knownPreferenceFronts.get(client);
+  }
+
+  let front = new PreferenceFront(client, form);
+  _knownPreferenceFronts.set(client, front);
+  return front;
+};