dom/base/IntlUtils.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "IntlUtils.h"
   8
   9 #include "mozilla/dom/ToJSValue.h"
  10 #include "mozilla/intl/LocaleService.h"
  11 #include "mozIMozIntl.h"
  12 #include "nsContentUtils.h"
  13
  14 namespace mozilla::dom {
  15
  16 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(IntlUtils, mWindow)
  17 NS_IMPL_CYCLE_COLLECTING_ADDREF(IntlUtils)
  18 NS_IMPL_CYCLE_COLLECTING_RELEASE(IntlUtils)
  19 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IntlUtils)
  20   NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  21   NS_INTERFACE_MAP_ENTRY(nsISupports)
  22 NS_INTERFACE_MAP_END
  23
  24 IntlUtils::IntlUtils(nsPIDOMWindowInner* aWindow) : mWindow(aWindow) {}
  25
  26 IntlUtils::~IntlUtils() = default;
  27
  28 JSObject* IntlUtils::WrapObject(JSContext* aCx,
  29                                 JS::Handle<JSObject*> aGivenProto) {
  30   return IntlUtils_Binding::Wrap(aCx, this, aGivenProto);
  31 }
  32
  33 void IntlUtils::GetDisplayNames(const Sequence<nsString>& aLocales,
  34                                 const DisplayNameOptions& aOptions,
  35                                 DisplayNameResult& aResult,
  36                                 ErrorResult& aError) {
  37   MOZ_ASSERT(nsContentUtils::IsCallerChrome() ||
  38              nsContentUtils::IsCallerUAWidget());
  39
  40   nsCOMPtr<mozIMozIntl> mozIntl = do_GetService("@mozilla.org/mozintl;1");
  41   if (!mozIntl) {
  42     aError.Throw(NS_ERROR_UNEXPECTED);
  43     return;
  44   }
  45
  46   aError.MightThrowJSException();
  47
  48   // Need to enter privileged junk scope since mozIntl implementation is in
  49   // chrome JS and passing XBL JS there shouldn't work.
  50   AutoJSAPI jsapi;
  51   if (!jsapi.Init(xpc::PrivilegedJunkScope())) {
  52     aError.Throw(NS_ERROR_FAILURE);
  53     return;
  54   }
  55   JSContext* cx = jsapi.cx();
  56
  57   // Prepare parameter for getDisplayNames().
  58   JS::Rooted<JS::Value> locales(cx);
  59   if (!ToJSValue(cx, aLocales, &locales)) {
  60     aError.StealExceptionFromJSContext(cx);
  61     return;
  62   }
  63
  64   JS::Rooted<JS::Value> options(cx);
  65   if (!ToJSValue(cx, aOptions, &options)) {
  66     aError.StealExceptionFromJSContext(cx);
  67     return;
  68   }
  69
  70   // Now call the method.
  71   JS::Rooted<JS::Value> retVal(cx);
  72   nsresult rv = mozIntl->GetDisplayNamesDeprecated(locales, options, &retVal);
  73   if (NS_FAILED(rv)) {
  74     aError.Throw(rv);
  75     return;
  76   }
  77
  78   if (!retVal.isObject() || !JS_WrapValue(cx, &retVal)) {
  79     aError.Throw(NS_ERROR_FAILURE);
  80     return;
  81   }
  82
  83   // Return the result as DisplayNameResult.
  84   if (!aResult.Init(cx, retVal)) {
  85     aError.Throw(NS_ERROR_FAILURE);
  86   }
  87 }
  88
  89 bool IntlUtils::IsAppLocaleRTL() {
  90   MOZ_ASSERT(nsContentUtils::IsCallerChrome() ||
  91              nsContentUtils::IsCallerUAWidget());
  92   return intl::LocaleService::GetInstance()->IsAppLocaleRTL();
  93 }
  94
  95 }  // namespace mozilla::dom