DO NOT MERGE

cherypick from jb-dev Change-Id: Ifcae4fcf716c8bb48f3ff18f17313b3f131c3f73

refactor the logic for changing languages in global strings.
instead of using separate <span> elements for each language,
provide a unique attribute in each <a> element for each localized
version of that link's title.

Change-Id: I09c65a8dce9b3d9623e32fe17876b055e452618b

4 files changed, 162 insertions, 247 deletions

diff --git a/tools/droiddoc/templates-sdk/assets/js/docs.js b/tools/droiddoc/templates-sdk/assets/js/docs.js
index 911252ee34..d18c4906e8 100644
--- a/tools/droiddoc/templates-sdk/assets/js/docs.js
+++ b/tools/droiddoc/templates-sdk/assets/js/docs.js
@@ -979,36 +979,18 @@ function requestAppendHL(uri) {
 }
 
 
-function changeTabLang(lang) {
-  var nodes = $("#header,#nav-x,.training-nav-top").find("."+lang);
-  for (i=0; i < nodes.length; i++) { // for each node in this language
-    var node = $(nodes[i]);
-    node.siblings().css("display","none"); // hide all siblings
-    if (node.not(":empty").length != 0) { //if this languages node has a translation, show it
-      node.css("display","inline");
-    } else { //otherwise, show English instead
-      node.css("display","none");
-      node.siblings().filter(".en").css("display","inline");
-    }
-  }
-}
-
 function changeNavLang(lang) {
-  var nodes = $("#devdoc-nav").find("."+lang);
-  for (i=0; i < nodes.length; i++) { // for each node in this language
-    var node = $(nodes[i]);
-    node.siblings().css("display","none"); // hide all siblings
-    if (node.not(":empty").length != 0) { // if this languages node has a translation, show it
-      node.css("display","inline");
-    } else { // otherwise, show English instead
-      node.css("display","none");
-      node.siblings().filter(".en").css("display","inline");
+  var $links = $("#devdoc-nav,#header,#nav-x,.training-nav-top,.content-footer").find("a["+lang+"-lang]");
+  $links.each(function(i){ // for each link with a translation
+    var $link = $(this);
+    if (lang != "en") { // No need to worry about English, because a language change invokes new request
+      // put the desired language from the attribute as the text
+      $link.text($link.attr(lang+"-lang"))
     }
-  }
+  });
 }
 
 function changeDocLang(lang) {
-  changeTabLang(lang);
   changeNavLang(lang);
 }
 
diff --git a/tools/droiddoc/templates-sdk/components/masthead.cs b/tools/droiddoc/templates-sdk/components/masthead.cs
index 4f4e2d3681..d98af853d9 100644
--- a/tools/droiddoc/templates-sdk/components/masthead.cs
+++ b/tools/droiddoc/templates-sdk/components/masthead.cs
@@ -12,36 +12,34 @@
           </div>
           </div>
             <ul class="nav-x col-9">
-                <li class="design"><a href="<?cs var:toroot ?>design/index.html" <?cs
-                  if:design ?>class="selected"<?cs /if ?> >
-                    <span class="en">Design</span>
-                    <span class="zh-TW" style="display:none">設計</span>
-                    <span class="zh-CN" style="display:none">设计</span>
-                    <span class="ru" style="display:none">Проектирование</span>
-                    <span class="ko" style="display:none">디자인</span>
-                    <span class="ja" style="display:none">設計</span>
-                    <span class="es" style="display:none">Diseñar</span>
-                  </a></li>
+                <li class="design">
+                  <a href="<?cs var:toroot ?>design/index.html" <?cs
+                  if:design ?>class="selected"<?cs /if ?>
+                  zh-TW-lang="設計"
+                  zh-CN-lang="设计"
+                  ru-lang="Проектирование"
+                  ko-lang="디자인"
+                  ja-lang="設計"
+                  es-lang="Diseñar"               
+                  >Design</a></li>
                 <li class="develop"><a href="<?cs var:toroot ?>develop/index.html" <?cs
-                  if:training || guide || reference || tools || develop ?>class="selected"<?cs /if ?> >
-                    <span class="en">Develop</span>
-                    <span class="zh-TW" style="display:none">開發</span>
-                    <span class="zh-CN" style="display:none">开发</span>
-                    <span class="ru" style="display:none">Разработка</span>
-                    <span class="ko" style="display:none">개발</span>
-                    <span class="ja" style="display:none">開発</span>
-                    <span class="es" style="display:none">Desarrollar</span>
-                  </a></li>
+                  if:training || guide || reference || tools || develop ?>class="selected"<?cs /if ?>
+                  zh-TW-lang="開發"
+                  zh-CN-lang="开发"
+                  ru-lang="Разработка"
+                  ko-lang="개발"
+                  ja-lang="開発"
+                  es-lang="Desarrollar"               
+                  >Develop</a></li>
                 <li class="distribute last"><a href="<?cs var:toroot ?>distribute/index.html" <?cs
-                  if:distribute ?>class="selected"<?cs /if ?> >
-                    <span class="en">Distribute</span>
-                    <span class="zh-TW" style="display:none">發佈</span>
-                    <span class="zh-CN" style="display:none">分发</span>
-                    <span class="ru" style="display:none">Распространение</span>
-                    <span class="ko" style="display:none">배포</span>
-                    <span class="ja" style="display:none">配布</span>
-                    <span class="es" style="display:none">Distribuir</span>
-                  </a></li>
+                  if:distribute ?>class="selected"<?cs /if ?>
+                  zh-TW-lang="發佈"
+                  zh-CN-lang="分发"
+                  ru-lang="Распространение"
+                  ko-lang="배포"
+                  ja-lang="配布"
+                  es-lang="Distribuir"               
+                  >Distribute</a></li>
             </ul>
             
             <!-- New Search -->
@@ -129,42 +127,38 @@ onkeyup="return search_changed(event, false, '<?cs var:toroot ?>')" />
                     </li>
                     <li class="develop">
                       <ul>
-                        <li><a href="<?cs var:toroot ?>training/index.html">
-                          <span class="en">Training</span>
-                          <span class="zh-TW" style="display:none">訓練課程</span>
-                          <span class="zh-CN" style="display:none">培训</span>
-                          <span class="ru" style="display:none">Курсы</span>
-                          <span class="ko" style="display:none">교육</span>
-                          <span class="ja" style="display:none">トレーニング</span>
-                          <span class="es" style="display:none">Capacitación</span>
-                        </a></li>
-                        <li><a href="<?cs var:toroot ?>guide/components/index.html">
-                          <span class="en">API Guides</span>
-                          <span class="zh-TW" style="display:none">API 指南</span>
-                          <span class="zh-CN" style="display:none">API 指南</span>
-                          <span class="ru" style="display:none">Руководства по API</span>
-                          <span class="ko" style="display:none">API 가이드</span>
-                          <span class="ja" style="display:none">API ガイド</span>
-                          <span class="es" style="display:none">Guías de la API</span>
-                        </a></li>
-                        <li><a href="<?cs var:toroot ?>reference/packages.html">
-                          <span class="en">Reference</span>
-                          <span class="zh-TW" style="display:none">參考資源</span>
-                          <span class="zh-CN" style="display:none">参考</span>
-                          <span class="ru" style="display:none">Справочник</span>
-                          <span class="ko" style="display:none">참조문서</span>
-                          <span class="ja" style="display:none">リファレンス</span>
-                          <span class="es" style="display:none">Referencia</span>
-                        </a></li>
-                        <li><a href="<?cs var:toroot ?>tools/index.html">
-                          <span class="en">Tools</span>
-                          <span class="zh-TW" style="display:none">相關工具</span>
-                          <span class="zh-CN" style="display:none">工具</span>
-                          <span class="ru" style="display:none">Инструменты</span>
-                          <span class="ko" style="display:none">도구</span>
-                          <span class="ja" style="display:none">ツール</span>
-                          <span class="es" style="display:none">Herramientas</span>
-                        </a>
+                        <li><a href="<?cs var:toroot ?>training/index.html"
+                          zh-TW-lang="訓練課程"
+                          zh-CN-lang="培训"
+                          ru-lang="Курсы"
+                          ko-lang="교육"
+                          ja-lang="トレーニング"
+                          es-lang="Capacitación"               
+                          >Training</a></li>
+                        <li><a href="<?cs var:toroot ?>guide/components/index.html"
+                          zh-TW-lang="API 指南"
+                          zh-CN-lang="API 指南"
+                          ru-lang="Руководства по API"
+                          ko-lang="API 가이드"
+                          ja-lang="API ガイド"
+                          es-lang="Guías de la API"               
+                          >API Guides</a></li>
+                        <li><a href="<?cs var:toroot ?>reference/packages.html"
+                          zh-TW-lang="參考資源"
+                          zh-CN-lang="参考"
+                          ru-lang="Справочник"
+                          ko-lang="참조문서"
+                          ja-lang="リファレンス"
+                          es-lang="Referencia"               
+                          >Reference</a></li>
+                        <li><a href="<?cs var:toroot ?>tools/index.html"
+                          zh-TW-lang="相關工具"
+                          zh-CN-lang="工具"
+                          ru-lang="Инструменты"
+                          ko-lang="도구"
+                          ja-lang="ツール"
+                          es-lang="Herramientas"               
+                          >Tools</a>
                           <ul><li><a href="<?cs var:toroot ?>sdk/index.html">Get the
 SDK</a></li></ul>
                         </li>
@@ -201,47 +195,42 @@ Distribution</a></li>
         <div class="wrap">
             <ul class="nav-x col-9 develop" style="width:75%">
                 <li><a href="<?cs var:toroot ?>training/index.html" <?cs
-                  if:training ?>class="selected"<?cs /if ?> >
-                  <span class="en">Training</span>
-                  <span class="zh-TW" style="display:none">訓練課程</span>
-                  <span class="zh-CN" style="display:none">培训</span>
-                  <span class="ru" style="display:none">Курсы</span>
-                  <span class="ko" style="display:none">교육</span>
-                  <span class="ja" style="display:none">トレーニング</span>
-                  <span class="es" style="display:none">Capacitación</span>
-                </a></li>
-                  <li><a href="<?cs var:toroot ?>guide/components/index.html" <?cs
-                  if:guide ?>class="selected"<?cs /if ?> >
-                  <span class="en">API Guides</span>
-                  <span class="zh-TW" style="display:none">API 指南</span>
-                  <span class="zh-CN" style="display:none">API 指南</span>
-                  <span class="ru" style="display:none">Руководства по API</span>
-                  <span class="ko" style="display:none">API 가이드</span>
-                  <span class="ja" style="display:none">API ガイド</span>
-                  <span class="es" style="display:none">Guías de la API</span>
-                </a></li>
+                  if:training ?>class="selected"<?cs /if ?>
+                  zh-TW-lang="訓練課程"
+                  zh-CN-lang="培训"
+                  ru-lang="Курсы"
+                  ko-lang="교육"
+                  ja-lang="トレーニング"
+                  es-lang="Capacitación"               
+                  >Training</a></li>
+                <li><a href="<?cs var:toroot ?>guide/components/index.html" <?cs
+                  if:guide ?>class="selected"<?cs /if ?>
+                  zh-TW-lang="API 指南"
+                  zh-CN-lang="API 指南"
+                  ru-lang="Руководства по API"
+                  ko-lang="API 가이드"
+                  ja-lang="API ガイド"
+                  es-lang="Guías de la API"               
+                  >API Guides</a></li>
                 <li><a href="<?cs var:toroot ?>reference/packages.html" <?cs
-                  if:reference ?>class="selected"<?cs /if ?> >
-                  <span class="en">Reference</span>
-                  <span class="zh-TW" style="display:none">參考資源</span>
-                  <span class="zh-CN" style="display:none">参考</span>
-                  <span class="ru" style="display:none">Справочник</span>
-                  <span class="ko" style="display:none">참조문서</span>
-                  <span class="ja" style="display:none">リファレンス</span>
-                  <span class="es" style="display:none">Referencia</span>
-                </a></li>
+                  if:reference ?>class="selected"<?cs /if ?>
+                  zh-TW-lang="參考資源"
+                  zh-CN-lang="参考"
+                  ru-lang="Справочник"
+                  ko-lang="참조문서"
+                  ja-lang="リファレンス"
+                  es-lang="Referencia"               
+                  >Reference</a></li>
                 <li><a href="<?cs var:toroot ?>tools/index.html" <?cs
-                  if:tools ?>class="selected"<?cs /if ?> >
-                  <span class="en">Tools</span>
-                  <span class="zh-TW" style="display:none">相關工具</span>
-                  <span class="zh-CN" style="display:none">工具</span>
-                  <span class="ru" style="display:none">Инструменты</span>
-                  <span class="ko" style="display:none">도구</span>
-                  <span class="ja" style="display:none">ツール</span>
-                  <span class="es" style="display:none">Herramientas</span>
-                </a></li>
+                  if:tools ?>class="selected"<?cs /if ?>
+                  zh-TW-lang="相關工具"
+                  zh-CN-lang="工具"
+                  ru-lang="Инструменты"
+                  ko-lang="도구"
+                  ja-lang="ツール"
+                  es-lang="Herramientas"               
+                  >Tools</a></li>
             </ul>
-          <!--  <a class="button-secondary download-sdk">Download the SDK</a> -->
         </div>
         
     </div>
diff --git a/tools/droiddoc/templates-sdk/docpage.cs b/tools/droiddoc/templates-sdk/docpage.cs
index 1f0033904d..63abceba4d 100644
--- a/tools/droiddoc/templates-sdk/docpage.cs
+++ b/tools/droiddoc/templates-sdk/docpage.cs
@@ -27,63 +27,57 @@
     </div>
     <?cs if:training ?>
       <div class="training-nav-top layout-content-col span-5" itemscope itemtype="http://schema.org/SiteNavigationElement">
-        <a href="#" class="prev-page-link hide">
-              <span class="en">Previous</span>
-              <span class="zh-TW" style="display:none">上一堂課</span>
-              <span class="zh-CN" style="display:none">上一课</span>
-              <span class="ru" style="display:none;font-size:85%">Предыдущий</span>
-              <span class="ko" style="display:none">이전</span>
-              <span class="ja" style="display:none">前へ</span>
-              <span class="es" style="display:none">Anterior</span>
-        </a>
-        <a href="#" class="next-page-link hide">
-              <span class="en">Next</span>
-              <span class="zh-TW" style="display:none">下一堂課</span>
-              <span class="zh-CN" style="display:none">下一课</span>
-              <span class="ru" style="display:none;font-size:85%">Следующий</span>
-              <span class="ko" style="display:none">다음</span>
-              <span class="ja" style="display:none">次へ</span>
-              <span class="es" style="display:none">Siguiente</span>
-        </a>
-        <a href="#" class="start-class-link hide">
-              <span class="en">Get started</span>
-              <span class="zh-TW" style="display:none">開始上課</span>
-              <span class="zh-CN" style="display:none">开始</span>
-              <span class="ru" style="display:none">Начало работы</span>
-              <span class="ko" style="display:none">시작하기</span>
-              <span class="ja" style="display:none">開始する</span>
-              <span class="es" style="display:none">Empezar</span>
-        </a>
-        <a href="#" class="start-course-link hide">
-              <span class="en">First class</span>
-              <span class="zh-TW" style="display:none">第一堂課</span>
-              <span class="zh-CN" style="display:none">第一课</span>
-              <span class="ru" style="display:none">Первый урок</span>
-              <span class="ko" style="display:none">첫 번째 강의</span>
-              <span class="ja" style="display:none">最初のクラス</span>
-              <span class="es" style="display:none">Primera clase</span>
-        </a>
+        <a href="#" class="prev-page-link hide"
+            zh-TW-lang="上一堂課"
+            zh-CN-lang="上一课"
+            ru-lang="Предыдущий"
+            ko-lang="이전"
+            ja-lang="前へ"
+            es-lang="Anterior"               
+            >Previous</a>
+        <a href="#" class="next-page-link hide"
+            zh-TW-lang="下一堂課"
+            zh-CN-lang="下一课"
+            ru-lang="Следующий"
+            ko-lang="다음"
+            ja-lang="次へ"
+            es-lang="Siguiente"               
+            >Next</a>
+        <a href="#" class="start-class-link hide"
+            zh-TW-lang="開始上課"
+            zh-CN-lang="开始"
+            ru-lang="Начало работы"
+            ko-lang="시작하기"
+            ja-lang="開始する"
+            es-lang="Empezar"               
+            >Get started</a>
+        <a href="#" class="start-course-link hide"
+            zh-TW-lang="第一堂課"
+            zh-CN-lang="第一课"
+            ru-lang="Первый урок"
+            ko-lang="첫 번째 강의"
+            ja-lang="最初のクラス"
+            es-lang="Primera clase"               
+            >First class</a>
       </div>
     <?cs else ?>
       <div class="paging-links layout-content-col span-4" itemscope itemtype="http://schema.org/SiteNavigationElement">
-        <a href="#" class="prev-page-link hide">
-          <span class="en">Previous</span>
-          <span class="zh-TW" style="display:none">上一堂課</span>
-          <span class="zh-CN" style="display:none">上一课</span>
-          <span class="ru" style="display:none;font-size:85%">Предыдущий</span>
-          <span class="ko" style="display:none">이전</span>
-          <span class="ja" style="display:none">前へ</span>
-          <span class="es" style="display:none">Anterior</span>
-        </a>
-        <a href="#" class="next-page-link hide">
-          <span class="en">Next</span>
-          <span class="zh-TW" style="display:none">下一堂課</span>
-          <span class="zh-CN" style="display:none">下一课</span>
-          <span class="ru" style="display:none;font-size:85%">Следующий</span>
-          <span class="ko" style="display:none">다음</span>
-          <span class="ja" style="display:none">次へ</span>
-          <span class="es" style="display:none">Siguiente</span>
-        </a>
+        <a href="#" class="prev-page-link hide"
+            zh-TW-lang="上一堂課"
+            zh-CN-lang="上一课"
+            ru-lang="Предыдущий"
+            ko-lang="이전"
+            ja-lang="前へ"
+            es-lang="Anterior"               
+            >Previous</a>
+        <a href="#" class="next-page-link hide"
+            zh-TW-lang="下一堂課"
+            zh-CN-lang="下一课"
+            ru-lang="Следующий"
+            ko-lang="다음"
+            ja-lang="次へ"
+            es-lang="Siguiente"               
+            >Next</a>
       </div>
     <?cs /if ?><?cs # end if training ?>
   </div>
@@ -135,24 +129,22 @@
         <?cs if:!fullscreen ?>
         <div class="paging-links layout-content-col col-4">
           <?cs if:(design||training||guide||walkthru) && !page.landing && !footer.hide ?>
-            <a href="#" class="prev-page-link hide">
-              <span class="en">Previous</span>
-              <span class="zh-TW" style="display:none">上一堂課</span>
-              <span class="zh-CN" style="display:none">上一课</span>
-              <span class="ru" style="display:none;font-size:85%">Предыдущий</span>
-              <span class="ko" style="display:none">이전</span>
-              <span class="ja" style="display:none">前へ</span>
-              <span class="es" style="display:none">Anterior</span>
-            </a>
-            <a href="#" class="next-page-link hide">
-              <span class="en">Next</span>
-              <span class="zh-TW" style="display:none">下一堂課</span>
-              <span class="zh-CN" style="display:none">下一课</span>
-              <span class="ru" style="display:none;font-size:85%">Следующий</span>
-              <span class="ko" style="display:none">다음</span>
-              <span class="ja" style="display:none">次へ</span>
-              <span class="es" style="display:none">Siguiente</span>
-            </a>
+            <a href="#" class="prev-page-link hide"
+                zh-TW-lang="上一堂課"
+                zh-CN-lang="上一课"
+                ru-lang="Предыдущий"
+                ko-lang="이전"
+                ja-lang="前へ"
+                es-lang="Anterior"               
+                >Previous</a>
+            <a href="#" class="next-page-link hide"
+                zh-TW-lang="下一堂課"
+                zh-CN-lang="下一课"
+                ru-lang="Следующий"
+                ko-lang="다음"
+                ja-lang="次へ"
+                es-lang="Siguiente"               
+                >Next</a>
           <?cs /if ?>
         </div>
         <?cs /if ?>
diff --git a/tools/droiddoc/templates-sdk/header_tabs.cs b/tools/droiddoc/templates-sdk/header_tabs.cs
index 41e6f18175..38c9da80fc 100644
--- a/tools/droiddoc/templates-sdk/header_tabs.cs
+++ b/tools/droiddoc/templates-sdk/header_tabs.cs
@@ -1,50 +1,2 @@
 
 <!-- CURRENTLY NOT USED... ALL TABS ARE IN masthead.cs -->
-
-<ul id="header-tabs" class="<?cs 
-	if:reference ?>reference<?cs
-	elif:guide ?>guide<?cs
-	elif:sdk ?>sdk<?cs
-	elif:home ?>home<?cs
-	elif:resources ?>resources<?cs
-	elif:training ?>training<?cs
-	elif:tools ?>tools<?cs
-	elif:videos ?>videos<?cs /if ?>">
-    
-	<li id="sdk-link"><a href="<?cs var:toroot ?>design/index.html">
-		<span class="en">Design</span>
-	</a></li>
-	<li id="sdk-link"><a href="<?cs var:toroot ?>develop/index.html">
-		<span class="en">Develop</span>
-	</a></li>
-	<li id="sdk-link"><a href="<?cs var:toroot ?>distribute/index.html">
-		<span class="en">Distribute</span>
-	</a></li>
-</ul>
-	
-	
-	
-	
-	
-	
-	
-	
-<!--	
-	<li id="guide-link"><a href="<?cs var:toroot ?>guide/index.html" onClick="return loadLast('guide')">
-	<?cs if:!sdk.redirect ?>
-		<span class="en">Guide</span>
-		<span style="display:none" class="de">Handbuch</span>
-		<span style="display:none" class="es">Guía</span>
-		<span style="display:none" class="fr">Guide</span>
-		<span style="display:none" class="it">Guida</span>
-		<span style="display:none" class="ja">開発ガイド</span>
-		<span style="display:none" class="zh-CN">开发人员指南</span>
-		<span style="display:none" class="zh-TW">開發指南</span>
-	<?cs /if ?>
-	</a></li>
--->
-
-
-
-     
-</ul>