AI 150537: Add support for language-specific tabs in android developer's blog. Pass the current language pref as an hl=lang url query.

BUG=1910893

Automated import of CL 150537

tools/droiddoc/templates-sdk/header_tabs.cs

@@ -7,16 +7,22 @@
 	elif:videos ?>videos<?cs /if ?>">
          
 	<li id="home-link"><a href="<?cs var:toroot ?><?cs if:android.whichdoc != "online" ?>offline.html<?cs else ?>index.html<?cs /if ?>">
+	<?cs if:!sdk.redirect ?>
 		<span class="en">Home</span>
 		<span class="de">Startseite</span>
+		<span class="es"></span>
+		<span class="fr"></span>
+		<span class="it"></span>
                 <span class="ja">ホーム</span>
 		<span class="zh-CN">主页</span>
 		<span class="zh-TW">首頁</span>
+	<?cs /if ?>
 	</a></li>
 	<li id="sdk-link"><a href="<?cs var:toroot ?>sdk/<?cs var:sdk.current ?>/index.html">
 		<span class="en">SDK</span>
 	</a></li>
 	<li id="guide-link"><a href="<?cs var:toroot ?>guide/index.html" onClick="return loadLast('guide')">
+	<?cs if:!sdk.redirect ?>
 		<span class="en">Dev Guide</span>
 		<span class="de">Handbuch</span>
 		<span class="es">Guía</span>
@@ -25,8 +31,10 @@
                 <span class="ja">開発ガイド</span>
 		<span class="zh-CN">开发人员指南</span>
 		<span class="zh-TW">開發指南</span>
+	<?cs /if ?>
 	</a></li>
 	<li id="reference-link"><a href="<?cs var:toroot ?>reference/packages.html" onClick="return loadLast('reference')">
+	<?cs if:!sdk.redirect ?>
 		<span class="en">Reference</span>
 		<span class="de">Referenz</span>
 		<span class="es">Referencia</span>
@@ -35,24 +43,35 @@
                 <span class="ja">リファレンス</span>
 		<span class="zh-CN">参考</span>
 		<span class="zh-TW">參考資料</span>
+	<?cs /if ?>
 	</a></li>
-	<li><a href="http://android-developers.blogspot.com">
+	<li><a href="http://android-developers.blogspot.com" onClick="return requestAppendHL(this.href)">
+	<?cs if:!sdk.redirect ?>
 		<span class="en">Blog</span>
+		<span class="de"></span>
+		<span class="es"></span>
+		<span class="fr"></span>
+		<span class="it"></span>
                 <span class="ja">ブログ</span>
 		<span class="zh-CN">博客</span>
 		<span class="zh-TW">網誌</span>
+	<?cs /if ?>
 	</a></li>
 	<li id="videos-link"><a href="<?cs var:toroot ?>videos/index.html" onClick="return loadLast('videos')">
 		<span class="en">Videos</span>
     <span class="ja">ビデオ</span>
 	</a></li>
 	<li id="community-link"><a href="<?cs var:toroot ?>community/index.html">
+	<?cs if:!sdk.redirect ?>
 		<span class="en">Community</span>
+		<span class="de"></span>
 		<span class="es">Comunidad</span>
 		<span class="fr">Communauté</span>
+		<span class="it"></span>
                 <span class="ja">コミュニティ</span>
 		<span class="zh-CN">社区</span>
 		<span class="zh-TW">社群</span>
+	<?cs /if ?>
 	</a></li>
      
 </ul>

tools/droiddoc/templates/assets/android-developer-docs.js

@@ -208,7 +208,7 @@ function resizeAll() {
 }
 
 function getBaseUri(uri) {
-  intlUrl = uri.substring(0,6) == "/intl/";
+  var intlUrl = (uri.substring(0,6) == "/intl/");
   if (intlUrl) {
     base = uri.substring(uri.indexOf('intl/')+5,uri.length);
     base = base.substring(base.indexOf('/')+1, base.length);
@@ -220,6 +220,19 @@ function getBaseUri(uri) {
   }
 }
 
+function requestAppendHL(uri) {
+//append "?hl=<lang> to an outgoing request (such as to blog)
+  var lang = getLangPref();
+  if (lang) {
+    var q = 'hl=' + lang;
+    uri += '?' + q;
+    window.location = uri;
+    return false;
+  } else {
+    return true;
+  }
+}
+
 function loadLast(cookiePath) {
   var location = window.location.href;
   if (location.indexOf("/"+cookiePath+"/") != -1) {
@@ -418,5 +431,9 @@ function loadLangPref() {
 }
 
 function getLangPref() {
-  return $("#language").find(":selected").attr("value");
+  var lang = $("#language").find(":selected").attr("value");
+  if (!lang) {
+    lang = readCookie("pref_lang");
+  }
+  return (lang != 0) ? lang : 'en';
 }