1 files changed, 95 insertions, 0 deletions
diff --git a/dom/base/IntlUtils.cpp b/dom/base/IntlUtils.cpp
new file mode 100644
index 0000000000..7292b9d779
--- /dev/null
+++ b/dom/base/IntlUtils.cpp
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 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/. */
+
+#include "IntlUtils.h"
+
+#include "mozilla/dom/ToJSValue.h"
+#include "mozilla/intl/LocaleService.h"
+#include "mozIMozIntl.h"
+#include "nsContentUtils.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(IntlUtils, mWindow)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(IntlUtils)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(IntlUtils)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IntlUtils)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+IntlUtils::IntlUtils(nsPIDOMWindowInner* aWindow) : mWindow(aWindow) {}
+
+IntlUtils::~IntlUtils() = default;
+
+JSObject* IntlUtils::WrapObject(JSContext* aCx,
+                                JS::Handle<JSObject*> aGivenProto) {
+  return IntlUtils_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void IntlUtils::GetDisplayNames(const Sequence<nsString>& aLocales,
+                                const DisplayNameOptions& aOptions,
+                                DisplayNameResult& aResult,
+                                ErrorResult& aError) {
+  MOZ_ASSERT(nsContentUtils::IsCallerChrome() ||
+             nsContentUtils::IsCallerUAWidget());
+
+  nsCOMPtr<mozIMozIntl> mozIntl = do_GetService("@mozilla.org/mozintl;1");
+  if (!mozIntl) {
+    aError.Throw(NS_ERROR_UNEXPECTED);
+    return;
+  }
+
+  aError.MightThrowJSException();
+
+  // Need to enter privileged junk scope since mozIntl implementation is in
+  // chrome JS and passing XBL JS there shouldn't work.
+  AutoJSAPI jsapi;
+  if (!jsapi.Init(xpc::PrivilegedJunkScope())) {
+    aError.Throw(NS_ERROR_FAILURE);
+    return;
+  }
+  JSContext* cx = jsapi.cx();
+
+  // Prepare parameter for getDisplayNames().
+  JS::Rooted<JS::Value> locales(cx);
+  if (!ToJSValue(cx, aLocales, &locales)) {
+    aError.StealExceptionFromJSContext(cx);
+    return;
+  }
+
+  JS::Rooted<JS::Value> options(cx);
+  if (!ToJSValue(cx, aOptions, &options)) {
+    aError.StealExceptionFromJSContext(cx);
+    return;
+  }
+
+  // Now call the method.
+  JS::Rooted<JS::Value> retVal(cx);
+  nsresult rv = mozIntl->GetDisplayNamesDeprecated(locales, options, &retVal);
+  if (NS_FAILED(rv)) {
+    aError.Throw(rv);
+    return;
+  }
+
+  if (!retVal.isObject() || !JS_WrapValue(cx, &retVal)) {
+    aError.Throw(NS_ERROR_FAILURE);
+    return;
+  }
+
+  // Return the result as DisplayNameResult.
+  if (!aResult.Init(cx, retVal)) {
+    aError.Throw(NS_ERROR_FAILURE);
+  }
+}
+
+bool IntlUtils::IsAppLocaleRTL() {
+  MOZ_ASSERT(nsContentUtils::IsCallerChrome() ||
+             nsContentUtils::IsCallerUAWidget());
+  return intl::LocaleService::GetInstance()->IsAppLocaleRTL();
+}
+
+}  // namespace mozilla::dom