From d78c23e00d3007c3fee8c3603acac00efc1ce14e Mon Sep 17 00:00:00 2001
From: ArthurHoaro <arthur@hoa.ro>
Date: Sat, 24 Feb 2018 18:18:33 +0100
Subject: Webpack / Remove frontend dependencies from tpl/ & inc/ and move them
 to assets/

---
 assets/vintage/js/base.js | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 assets/vintage/js/base.js

(limited to 'assets/vintage/js')

diff --git a/assets/vintage/js/base.js b/assets/vintage/js/base.js
new file mode 100644
index 00000000..9bcc96fb
--- /dev/null
+++ b/assets/vintage/js/base.js
@@ -0,0 +1,32 @@
+window.onload = function () {
+    var continent = document.getElementById('continent');
+    var city = document.getElementById('city');
+    if (continent != null && city != null) {
+        continent.addEventListener('change', function(event) {
+            hideTimezoneCities(city, continent.options[continent.selectedIndex].value, true);
+        });
+        hideTimezoneCities(city, continent.options[continent.selectedIndex].value, false);
+    }
+};
+
+/**
+ * Add the class 'hidden' to city options not attached to the current selected continent.
+ *
+ * @param cities           List of <option> elements
+ * @param currentContinent Current selected continent
+ * @param reset            Set to true to reset the selected value
+ */
+function hideTimezoneCities(cities, currentContinent, reset = false) {
+    var first = true;
+    [].forEach.call(cities, function(option) {
+        if (option.getAttribute('data-continent') != currentContinent) {
+            option.className = 'hidden';
+        } else {
+            option.className = '';
+            if (reset === true && first === true) {
+                option.setAttribute('selected', 'selected');
+                first = false;
+            }
+        }
+    });
+}
-- 
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