Upstream //ios/chrome/browser/translate

ios/chrome/browser/translate/translate_service_ios.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ios/chrome/browser/translate/translate_service_ios.h"
+
+#include "base/logging.h"
+#include "components/translate/core/browser/translate_download_manager.h"
+#include "components/translate/core/browser/translate_manager.h"
+#include "ios/chrome/browser/application_context.h"
+#include "ios/public/provider/chrome/browser/chrome_browser_provider.h"
+#include "url/gurl.h"
+
+namespace {
+// The singleton instance of TranslateServiceIOS.
+TranslateServiceIOS* g_translate_service = nullptr;
+}
+
+TranslateServiceIOS::TranslateServiceIOS()
+    : resource_request_allowed_notifier_(
+          GetApplicationContext()->GetLocalState(),
+          nullptr) {
+  resource_request_allowed_notifier_.Init(this);
+}
+
+TranslateServiceIOS::~TranslateServiceIOS() {
+}
+
+// static
+void TranslateServiceIOS::Initialize() {
+  if (g_translate_service)
+    return;
+
+  g_translate_service = new TranslateServiceIOS;
+  // Initialize the allowed state for resource requests.
+  g_translate_service->OnResourceRequestsAllowed();
+  translate::TranslateDownloadManager* download_manager =
+      translate::TranslateDownloadManager::GetInstance();
+  download_manager->set_request_context(
+      GetApplicationContext()->GetSystemURLRequestContext());
+  download_manager->set_application_locale(
+      GetApplicationContext()->GetApplicationLocale());
+}
+
+// static
+void TranslateServiceIOS::Shutdown() {
+  translate::TranslateDownloadManager* download_manager =
+      translate::TranslateDownloadManager::GetInstance();
+  download_manager->Shutdown();
+}
+
+void TranslateServiceIOS::OnResourceRequestsAllowed() {
+  translate::TranslateLanguageList* language_list =
+      translate::TranslateDownloadManager::GetInstance()->language_list();
+  if (!language_list) {
+    NOTREACHED();
+    return;
+  }
+
+  language_list->SetResourceRequestsAllowed(
+      resource_request_allowed_notifier_.ResourceRequestsAllowed());
+}
+
+// static
+bool TranslateServiceIOS::IsTranslatableURL(const GURL& url) {
+  // A URL is translatable unless it is one of the following:
+  // - empty (can happen for popups created with window.open(""))
+  // - an internal URL
+  return !url.is_empty() &&
+         !url.SchemeIs(ios::GetChromeBrowserProvider()->GetChromeUIScheme());
+}