Implement navigator.languages.

Source/core/frame/Navigator.cpp

 /*
  *  Copyright (C) 2000 Harri Porten (porten@kde.org)
  *  Copyright (c) 2000 Daniel Molkentin (molkentin@kde.org)
  *  Copyright (c) 2000 Stefan Schimanski (schimmi@kde.org)
  *  Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc.
  *  Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Lesser General Public License for more details.
  *
  *  You should have received a copy of the GNU Lesser General Public
  *  License along with this library; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
 #include "config.h"
 #include "core/frame/Navigator.h"
 
 #include "bindings/v8/ScriptController.h"
 #include "core/dom/Document.h"
+#include "core/frame/FrameHost.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/NavigatorID.h"
 #include "core/frame/Settings.h"
 #include "core/loader/CookieJar.h"
 #include "core/loader/FrameLoader.h"
+#include "core/page/Chrome.h"
+#include "core/page/ChromeClient.h"
 #include "core/plugins/DOMMimeTypeArray.h"
 #include "core/plugins/DOMPluginArray.h"
+#include "platform/Language.h"
 
 #ifndef WEBCORE_NAVIGATOR_PRODUCT_SUB
 #define WEBCORE_NAVIGATOR_PRODUCT_SUB "20030107"
 #endif // ifndef WEBCORE_NAVIGATOR_PRODUCT_SUB
 
 #ifndef WEBCORE_NAVIGATOR_VENDOR
 #define WEBCORE_NAVIGATOR_VENDOR "Google Inc."
 #endif // ifndef WEBCORE_NAVIGATOR_VENDOR
 
 #ifndef WEBCORE_NAVIGATOR_VENDOR_SUB
@@ skipping 71 matching lines @@
         return false;
 
     return true;
 }
 
 void Navigator::getStorageUpdates()
 {
     // FIXME: Remove this method or rename to yieldForStorageUpdates.
 }
 
+Vector<String> Navigator::languages()
+{
+    Vector<String> languages;
+
+    if (!m_frame || !m_frame->host()) {
+        languages.append(defaultLanguage());
+        return languages;
+    }
+
+    String acceptLanguages = m_frame->host()->chrome().client().acceptLanguages();
+    acceptLanguages.split(",", languages);
+
+    // Sanitizing tokens. We could do that more extensively but we should assume
+    // that the accept languages are already sane and support BCP47. It is
+    // likely a waste of time to make sure the tokens matches that spec here.
+    for (size_t i = 0; i < languages.size(); ++i) {
+        String& token = languages[i];
+        token = token.stripWhiteSpace();
+        if (token.length() >= 3 && token[2] == '_')
+            token.replace(2, 1, "-");
+    }
+
+    return languages;
+}
+
 void Navigator::trace(Visitor* visitor)
 {
     visitor->trace(m_plugins);
     visitor->trace(m_mimeTypes);
     WillBeHeapSupplementable<Navigator>::trace(visitor);
 }
 
 } // namespace WebCore