Less hacky implementation of the language selection

anwiki/_override/contentclasses/contentclass_menu/contentclass_menu.tpl.php

Index: anwiki/_override/contentclasses/contentclass_menu/contentclass_menu.tpl.php
===================================================================
--- a/anwiki/_override/contentclasses/contentclass_menu/contentclass_menu.tpl.php
+++ b/anwiki/_override/contentclasses/contentclass_menu/contentclass_menu.tpl.php
@@ -29,28 +29,116 @@ EOF;
         <button id="search-button" type="submit">$sTitle</button>
       </label>
     </form>
   </li>
 EOF;
     return $HTML;
   }
 
+  function renderLanguages()
+  {
+    $languages = $this->getLanguages($aoTranslations);
+    if (count($languages) == 0)
+      return "";
+
+    $currentLanguage = array_shift($languages);
+    $currentLang = $currentLanguage['lang'];
+    $currentText = $currentLanguage['text'];
+
+    $HTML = <<<EOF
+
+<li id="language">
+  <div id="current-language">
+    <div id="flag-$currentLang" class="flag sprite"></div><span>$currentText</span>
+    <span id="language-arrow" class="sprite"></span>
+  </div>
+  <ul id="language-selector">
+EOF;
+
+    foreach ($languages as $language)
+    {
+      $url = $language['url'];
+      $linkStyle = $language['linkStyle'];
+      $lang = $language['lang'];
+      $text = $language['text'];
+
+      # Note: The space before URL is required because otherwise Anwiki will
+      # automatically replace the URL based on current language.
+      $HTML .= <<<EOF
+
+    <li class="language-entry"><a href=" $url"$linkStyle><div id="flag-$lang" class="flag sprite"></div>$text</a></li>
+EOF;
+    }
+
+    $HTML .= <<<EOF
+
+  </ul>
+</li>
+EOF;
+    return $HTML;
+  }
+
+  private function getLanguages()
+  {
+    $languages = array();
+
+    $currentPageName = AnwActionPage::getCurrentPageName();
+    if (!AnwPage::isValidPageName($currentPageName))
+      return $languages;
+
+    $currentPage = new AnwPageByName($currentPageName);
+    if (!$currentPage->exists())
+      return $languages;
+
+    $pages = $currentPage->getPageGroup()->getPages();
+    $translationThreshold = AnwComponent::globalCfgViewUntranslatedMinpercent();
+    foreach ($pages as $page)
+    {
+      if ($page->isActionAllowed('view'))
+      {
+        $current = ($page->getName() == $currentPageName);
+        $online = ($page->getTranslatedPercent() >= $translationThreshold);
+        $linkStyle = ($online ? '' : ' style="text-decoration:line-through;"');
+        $lang = $this->xQuote($page->getLang());
+        $text = $this->xText(self::g_('lang_' . $lang, array(),
+                                       AnwAction::getActionLang()));
+        $entry = array("lang" => $lang, "linkStyle" => $linkStyle,
+                       "text" => $text);
+        if ($current)
+          array_unshift($languages, $entry);
+        else
+        {
+          $params = $_GET;
+          unset($params[AnwActionPage::GET_PAGENAME]); //avoid loop
+          unset($params['browser']);
+          $url = AnwUtils::link($page, "view", $params);
+          $entry['url'] = $this->xQuote($url);
+          array_push($languages, $entry);
+        }
+      }
+    }
+
+    return $languages;
+  }
+
   function mainItem($sTitle, $sUrl, $sTarget, $sRenderedSubItems=false)
   {
     if ($this->firstItem)
     {
       $classAttribute = ' class="first"';
       $this->firstItem = false;
     }
     else
       $classAttribute = '';
 
     if ($sUrl == "/search/")
       return $this->renderSearch($sTitle, $classAttribute);
+    else if ($sUrl == "/languages/")
+      return $this->renderLanguages();
 
     # Anything with a link relative to site root must be in English
     $sHrefLang = (preg_match('!^/!', $sUrl) ? ' hreflang="en"' : '');
 
     $HTML = <<<EOF
 
   <li$classAttribute><a href="$sUrl"$sHrefLang>$sTitle</a></li>
 EOF;