1 files changed, 52 insertions, 0 deletions
diff --git a/widget/gtk/nsBidiKeyboard.cpp b/widget/gtk/nsBidiKeyboard.cpp
new file mode 100644
index 0000000000..a57235195b
--- /dev/null
+++ b/widget/gtk/nsBidiKeyboard.cpp
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=4:tabstop=4:
+ */
+/* 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/. */
+
+#include "prlink.h"
+
+#include "nsBidiKeyboard.h"
+#include "nsIWidget.h"
+#include <gtk/gtk.h>
+
+NS_IMPL_ISUPPORTS(nsBidiKeyboard, nsIBidiKeyboard)
+
+nsBidiKeyboard::nsBidiKeyboard() { Reset(); }
+
+NS_IMETHODIMP
+nsBidiKeyboard::Reset() {
+  // NB: The default keymap can be null (e.g. in xpcshell). In that case,
+  // simply assume that we don't have bidi keyboards.
+  mHaveBidiKeyboards = false;
+
+  GdkDisplay* display = gdk_display_get_default();
+  if (!display) return NS_OK;
+
+  GdkKeymap* keymap = gdk_keymap_get_for_display(display);
+  mHaveBidiKeyboards = keymap && gdk_keymap_have_bidi_layouts(keymap);
+  return NS_OK;
+}
+
+nsBidiKeyboard::~nsBidiKeyboard() = default;
+
+NS_IMETHODIMP
+nsBidiKeyboard::IsLangRTL(bool* aIsRTL) {
+  if (!mHaveBidiKeyboards) return NS_ERROR_FAILURE;
+
+  *aIsRTL = (gdk_keymap_get_direction(gdk_keymap_get_default()) ==
+             PANGO_DIRECTION_RTL);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsBidiKeyboard::GetHaveBidiKeyboards(bool* aResult) {
+  // not implemented yet
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+// static
+already_AddRefed<nsIBidiKeyboard> nsIWidget::CreateBidiKeyboardInner() {
+  return do_AddRef(new nsBidiKeyboard());
+}