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-rw-r--r--browser/actors/SwitchDocumentDirectionChild.sys.mjs27
1 files changed, 27 insertions, 0 deletions
diff --git a/browser/actors/SwitchDocumentDirectionChild.sys.mjs b/browser/actors/SwitchDocumentDirectionChild.sys.mjs
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+++ b/browser/actors/SwitchDocumentDirectionChild.sys.mjs
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+/* vim: set ts=2 sw=2 sts=2 et tw=80: */
+/* 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/. */
+
+export class SwitchDocumentDirectionChild extends JSWindowActorChild {
+ receiveMessage(message) {
+ if (message.name == "SwitchDocumentDirection") {
+ let docShell = this.manager.browsingContext.docShell;
+ let document = docShell.QueryInterface(Ci.nsIWebNavigation).document;
+ this.switchDocumentDirection(document);
+ }
+ }
+
+ switchDocumentDirection(document) {
+ // document.dir can also be "auto", in which case it won't change
+ if (document.dir == "ltr" || document.dir == "") {
+ document.dir = "rtl";
+ } else if (document.dir == "rtl") {
+ document.dir = "ltr";
+ }
+
+ for (let frame of document.defaultView.frames) {
+ this.switchDocumentDirection(frame.document);
+ }
+ }
+}