feat: Added support for old browsers

Author: BaranekD

.browserslistrc

@@ -0,0 +1,39 @@
+[production]
+ie 7
+ie 10
+electron 4.2
+ie 11
+last 2 chrome major versions
+last 2 firefox major versions
+firefox esr
+last 2 opera major versions
+last 2 chromeandroid major versions
+last 2 firefoxandroid major versions
+ios >= 14.0
+ios 13.4-13.999
+ios 12.2-12.999
+last 1 safari major versions
+last 2 edge major versions
+last 1 android major versions
+last 1 samsung major versions
+
+[supported]
+last 2 chrome major versions
+last 2 firefox major versions
+firefox esr
+last 2 opera major versions
+last 2 chromeandroid major versions
+last 2 firefoxandroid major versions
+last 1 ios major versions
+last 1 safari major versions
+last 2 edge major versions
+last 1 android major versions
+last 1 samsung major versions
+
+[unsupported]
+dead
+firefox < 78
+edge < 88
+ie <= 11
+ios < 12.5
+not since 2020-06

dictionaries/disco.definition.json

@@ -66,5 +66,9 @@
   "add_institution_no_entries_contact_us": {
     "en": "Still can't find your institution? Contact us at",
     "cs": "Stále nemůžete nalézt vaši instituci? Kontaktujte nás na"
+  },
+  "js_not_loaded_message": {
+    "en": "Your browser does not support the required functionality to display this page. Please use a different browser and try again. We apologize for the caused difficulties.",
+    "cs": "Váš prohlížeč nepodporuje funkcionalitu potřebnou pro správné zobrazení této stránky. Zkuste, prosím, použít jiný prohlížeč. Omlouváme se za vzniklé problémy."
   }
 }

lib/Disco.php

@@ -543,9 +543,25 @@ public static function showInlineSearch(
         return $result;
     }
 
+    public static function displayAllIdps(DiscoTemplate $t): string
+    {
+        $allIdps = $t->getAllIdps();
+
+        $result = '<div class="metalist list-group">' . PHP_EOL;
+        foreach ($allIdps as $idpentry) {
+            $result .= self::showEntry($t, $idpentry) . PHP_EOL;
+        }
+        $result .= '</div>' . PHP_EOL;
+
+        return $result;
+    }
+
     public static function getScripts(bool $boxed): string
     {
         $html = '<script type="text/javascript" src="' .
+            Module::getModuleUrl('perun/res/js/old-browsers.js') . '"></script>' . PHP_EOL;
+
+        $html .= '<script type="text/javascript" src="' .
             Module::getModuleUrl('discopower/assets/js/suggest.js') . '"></script>' . PHP_EOL;
 
         $html .= '<script type="text/javascript" src="' .

package.json

@@ -4,6 +4,10 @@
   "devDependencies": {
     "@semantic-release/changelog": "^5.0.1",
     "@semantic-release/git": "^9.0.0",
-    "semantic-release": "^17.4.2"
+    "semantic-release": "^17.4.2",
+    "browserslist-useragent-regexp": "^2.1.1"
+  },
+  "scripts": {
+    "unsupportedBrowsers": "echo \"module.exports = $(BROWSERSLIST_ENV=unsupported browserslist-useragent-regexp);\" > www/res/js/unsupportedBrowsers.js"
   }
-}
+}

themes/perun/perun/disco-tpl.php

@@ -59,6 +59,11 @@
 
 $this->includeAtTemplateBase('includes/header.php');
 
+echo '<div id="deprecation-notice" class="d-none">';
+echo $this->t('{perun:disco:js_not_loaded_message}') . PHP_EOL;
+echo Disco::displayAllIdps($this) . PHP_EOL;
+echo '</div>';
+
 # IF WE HAVE A WARNING, DISPLAY IT TO THE USER
 if ($warningAttributes !== null && $warningAttributes->isEnabled()) {
     echo Disco::showWarning($this, $warningAttributes);

www/res/css/disco.css

@@ -25,6 +25,14 @@ html, body {
     width: auto;
 }
 
+#deprecation-notice {
+    font-weight: bold;
+}
+
+.d-none {
+    display: none;
+}
+
 a.metaentry {
     padding: 10px 15px 10px 15px;
 }