1 files changed, 46 insertions, 0 deletions
diff --git a/devtools/client/webconsole/utils/prefs.js b/devtools/client/webconsole/utils/prefs.js
new file mode 100644
index 0000000000..9235c82069
--- /dev/null
+++ b/devtools/client/webconsole/utils/prefs.js
@@ -0,0 +1,46 @@
+/* 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";
+
+function getPreferenceName(hud, suffix) {
+  if (!suffix) {
+    console.error("Suffix shouldn't be falsy", { suffix });
+    return null;
+  }
+
+  if (!hud) {
+    console.error("hud shouldn't be falsy", { hud });
+    return null;
+  }
+
+  if (suffix.startsWith("devtools.")) {
+    // We don't have a suffix but a full pref name. Let's return it.
+    return suffix;
+  }
+
+  const component = hud.isBrowserConsole ? "browserconsole" : "webconsole";
+  return `devtools.${component}.${suffix}`;
+}
+
+function getPrefsService(hud) {
+  const getPrefName = pref => getPreferenceName(hud, pref);
+
+  return {
+    getBoolPref: (pref, deflt) =>
+      Services.prefs.getBoolPref(getPrefName(pref), deflt),
+    getIntPref: (pref, deflt) =>
+      Services.prefs.getIntPref(getPrefName(pref), deflt),
+    setBoolPref: (pref, value) =>
+      Services.prefs.setBoolPref(getPrefName(pref), value),
+    setIntPref: (pref, value) =>
+      Services.prefs.setIntPref(getPrefName(pref), value),
+    clearUserPref: pref => Services.prefs.clearUserPref(getPrefName(pref)),
+    getPrefName,
+  };
+}
+
+module.exports = {
+  getPrefsService,
+};