1 files changed, 40 insertions, 0 deletions
diff --git a/browser/extensions/webcompat/injections/js/bug1795490-www.china-airlines.com-undisable-date-fields-on-mobile.js b/browser/extensions/webcompat/injections/js/bug1795490-www.china-airlines.com-undisable-date-fields-on-mobile.js
new file mode 100644
index 0000000000..f3c0e03513
--- /dev/null
+++ b/browser/extensions/webcompat/injections/js/bug1795490-www.china-airlines.com-undisable-date-fields-on-mobile.js
@@ -0,0 +1,40 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Bug 1795490 - Cannot use date fields on China Airlines mobile page
+ *
+ * This patch ensures that the search input never has the [disabled]
+ * attribute, so that users may tap/click on it to search.
+ *
+ * See https://bugzilla.mozilla.org/show_bug.cgi?id=1795490 for details.
+ */
+
+const SELECTOR = `#departureDateMobile[disabled], #returnDateMobile[disabled]`;
+
+function check(target) {
+  if (target.nodeName === "INPUT" && target.matches(SELECTOR)) {
+    target.removeAttribute("disabled");
+    return true;
+  }
+  return false;
+}
+
+new MutationObserver(mutations => {
+  for (const { addedNodes, target, attributeName } of mutations) {
+    if (attributeName === "disabled") {
+      check(target);
+    } else {
+      addedNodes?.forEach(node => {
+        if (!check(node)) {
+          node
+            .querySelectorAll?.(SELECTOR)
+            ?.forEach(n => n.removeAttribute("disabled"));
+        }
+      });
+    }
+  }
+}).observe(document, { attributes: true, childList: true, subtree: true });