1 files changed, 54 insertions, 0 deletions
diff --git a/comm/suite/components/pref/content/pref-keynav.js b/comm/suite/components/pref/content/pref-keynav.js
new file mode 100644
index 0000000000..5210fdbe5c
--- /dev/null
+++ b/comm/suite/components/pref/content/pref-keynav.js
@@ -0,0 +1,54 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+var {AppConstants} = ChromeUtils.import(
+  "resource://gre/modules/AppConstants.jsm"
+);
+
+const kTabToLinks = 4;
+const kTabToForms = 2;
+const kTabToTextboxes = 1;
+
+function Startup()
+{
+  if (AppConstants.platform == "macosx") {
+    document.getElementById("tabNavigationPrefs").setAttribute("hidden", true);
+  }
+
+  UpdateBrowseWithCaretItems();
+}
+
+function ReadTabNav(aField)
+{
+  var curval = document.getElementById("accessibility.tabfocus").value;
+  // Return the right bit based on the id of "aField"
+  if (aField.id == "tabNavigationLinks")
+    return (curval & kTabToLinks) != 0;
+
+  return (curval & kTabToForms) != 0;
+}
+
+function WriteTabNav(aField)
+{
+  var curval = document.getElementById("accessibility.tabfocus").value;
+  // Textboxes are always part of the tab order
+  curval |= kTabToTextboxes;
+  // Select the bit, we have to change, based on the id of "aField"
+  var bit = kTabToForms;
+  if (aField.id == "tabNavigationLinks")
+    bit = kTabToLinks;
+
+  if (aField.checked)
+    return curval | bit;
+
+  return curval & ~bit;
+}
+
+function UpdateBrowseWithCaretItems()
+{
+  document.getElementById("browseWithCaretWarn").disabled =
+    !document.getElementById("accessibility.browsewithcaret_shortcut.enabled").value ||
+    document.getElementById("accessibility.browsewithcaret").locked;
+}