Translate bubble for Mac OS X

chrome/browser/translate/translate_tab_helper.cc

 // Copyright 2011 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 "chrome/browser/translate/translate_tab_helper.h"
 
 #include "base/logging.h"
+#include "base/prefs/pref_service.h"
+#include "base/strings/string_split.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/translate/translate_accept_languages_factory.h"
 #include "chrome/browser/translate/translate_infobar_delegate.h"
 #include "chrome/browser/translate/translate_manager.h"
 #include "chrome/browser/translate/translate_service.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 41 matching lines @@
 
 // static
 TranslateManager* TranslateTabHelper::GetManagerFromWebContents(
     content::WebContents* web_contents) {
   TranslateTabHelper* translate_tab_helper = FromWebContents(web_contents);
   if (!translate_tab_helper)
     return NULL;
   return translate_tab_helper->GetTranslateManager();
 }
 
+// static
+void TranslateTabHelper::GetTranslateLanguages(
+    content::WebContents* web_contents,
+    std::string* source,
+    std::string* target) {
+  DCHECK(source != NULL);
+  DCHECK(target != NULL);
+
+  TranslateTabHelper* translate_tab_helper = FromWebContents(web_contents);

[Takashi Toyoshima, 2014/04/02 03:57:30]

Did you confirm that there is no race and translate_tab_helper never becomes
NULL on all platforms?

[hajimehoshi, 2014/04/02 09:16:18]

Yes as long as this is called on UI thread.
It could be NULL when testing. Done.

+  *source = translate_tab_helper->GetLanguageState().original_language();
+
+  Profile* profile =
+      Profile::FromBrowserContext(web_contents->GetBrowserContext());
+  Profile* original_profile = profile->GetOriginalProfile();
+  PrefService* prefs = original_profile->GetPrefs();
+  if (!web_contents->GetBrowserContext()->IsOffTheRecord()) {
+    std::string auto_translate_language =
+        TranslateManager::GetAutoTargetLanguage(*source, prefs);
+    if (!auto_translate_language.empty()) {
+      *target = auto_translate_language;
+      return;
+    }
+  }
+
+  std::string accept_languages_str = prefs->GetString(prefs::kAcceptLanguages);
+  std::vector<std::string> accept_languages_list;
+  base::SplitString(accept_languages_str, ',', &accept_languages_list);
+  *target = TranslateManager::GetTargetLanguage(accept_languages_list);
+}
+
 TranslateManager* TranslateTabHelper::GetTranslateManager() {
   return translate_manager_.get();
 }
 
 content::WebContents* TranslateTabHelper::GetWebContents() {
   return web_contents();
 }
 
 void TranslateTabHelper::ShowTranslateUI(TranslateTabHelper::TranslateStep step,
                                          const std::string source_language,
@@ skipping 141 matching lines @@
     if (GetLanguageState().InTranslateNavigation())
       return;
   }
 
   TranslateBubbleFactory::Show(
       browser->window(), web_contents(), step, error_type);
 #else
   NOTREACHED();
 #endif
 }