From 362ac8de6f9711f342ad19de66480b7673d649cb Mon Sep 17 00:00:00 2001
From: Richard Schreiber <schreiber@rami.io>
Date: Tue, 10 Jun 2025 20:41:51 +0200
Subject: [PATCH] [A11y] Widget: pass doc title in overlay to iframe.title
 (#5210)

---
 src/pretix/static/pretixpresale/js/ui/iframe.js     |  8 ++++++++
 src/pretix/static/pretixpresale/js/widget/widget.js | 11 +++++++++++
 2 files changed, 19 insertions(+)

diff --git a/src/pretix/static/pretixpresale/js/ui/iframe.js b/src/pretix/static/pretixpresale/js/ui/iframe.js
index c7d0119e1..fc4706b57 100644
--- a/src/pretix/static/pretixpresale/js/ui/iframe.js
+++ b/src/pretix/static/pretixpresale/js/ui/iframe.js
@@ -7,4 +7,12 @@ var inIframe = function () {
 };
 if (inIframe()) {
     document.documentElement.classList.add('in-iframe');
+    try {
+        window.parent.postMessage({
+            type: "pretix:widget:title",
+            title: document.title,
+        }, "*");
+    } catch (e) {
+        console.error("Could not post message to parent.", e);
+    }
 }
diff --git a/src/pretix/static/pretixpresale/js/widget/widget.js b/src/pretix/static/pretixpresale/js/widget/widget.js
index a3d2a152b..865c04e6c 100644
--- a/src/pretix/static/pretixpresale/js/widget/widget.js
+++ b/src/pretix/static/pretixpresale/js/widget/widget.js
@@ -939,7 +939,18 @@ Vue.component('pretix-overlay', {
             }  
         },
     },
+    mounted () {
+        window.addEventListener('message', this.onMessage, false);
+    },
+    unmounted () {
+        window.removeEventListener('message', this.onMessage, false);
+    },
     methods: {
+        onMessage: function(e) {
+            if (e.data.type && e.data.type == "pretix:widget:title") {
+                this.$el.querySelector("iframe").title = e.data.title;
+            }
+        },
         lightboxClose: function () {
             this.$root.lightbox = null;
         },