From 68192c9e50507dfa75d527d86c5ca58b99d1aa85 Mon Sep 17 00:00:00 2001
From: Stacey Van Herk <13419300+svanherk@users.noreply.github.com>
Date: Thu, 5 Feb 2026 15:42:40 -0500
Subject: [PATCH] GAUD-9398 - Add demo page demonstrating the issue

---
 components/dialog/demo/dialog-iframe.html     | 26 +++++++++++++++
 .../dialog/demo/iframes/opener-frame.html     | 25 ++++++++++++++
 .../dialog/demo/iframes/outer-frame.html      | 33 +++++++++++++++++++
 index.html                                    |  1 +
 4 files changed, 85 insertions(+)
 create mode 100644 components/dialog/demo/dialog-iframe.html
 create mode 100644 components/dialog/demo/iframes/opener-frame.html
 create mode 100644 components/dialog/demo/iframes/outer-frame.html
diff --git a/components/dialog/demo/dialog-iframe.html b/components/dialog/demo/dialog-iframe.html
new file mode 100644
index 00000000000..04561d8b81b
--- /dev/null
+++ b/components/dialog/demo/dialog-iframe.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<meta name="viewport" content="width=device-width, initial-scale=1.0">
+		<meta charset="UTF-8">
+		<link rel="stylesheet" href="../../demo/styles.css" type="text/css">
+		<script type="module">
+			import '../../demo/demo-page.js';
+		</script>
+	</head>
+	<body unresolved>
+		<d2l-demo-page page-title="d2l-dialog">
+
+			<h2>Fullscreen Demo (iframe)</h2>
+			<p> After opening the dialog, click here and then start tabbing.</p>
+
+			<d2l-demo-snippet full-width>
+				<template>
+					<iframe src="./iframes/outer-frame.html" style="border: none; display: block; height: 400px; width: 100%;"></iframe>
+				</template>
+			</d2l-demo-snippet>
+
+
+		</d2l-demo-page>
+	</body>
+</html>
diff --git a/components/dialog/demo/iframes/opener-frame.html b/components/dialog/demo/iframes/opener-frame.html
new file mode 100644
index 00000000000..1068f9550c9
--- /dev/null
+++ b/components/dialog/demo/iframes/opener-frame.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<meta name="viewport" content="width=device-width, initial-scale=1.0">
+		<meta charset="UTF-8">
+		<link rel="stylesheet" href="../../../demo/styles.css" type="text/css">
+		<script type="module">
+			import '../../../demo/demo-page.js';
+			import '../../../button/button.js';
+		</script>
+	</head>
+	<body unresolved>
+		<d2l-button id="open">Open Dialog from Inner Frame</d2l-button>
+		<d2l-button>Other</d2l-button>
+		<d2l-button>Other</d2l-button>
+		<d2l-button>Other</d2l-button>
+		<script>
+			requestAnimationFrame((() => {
+				document.querySelector('#open').addEventListener('click', () => {
+					parent.OpenFullscreenDialog();
+				});
+			}));
+		</script>
+	</body>
+</html>
diff --git a/components/dialog/demo/iframes/outer-frame.html b/components/dialog/demo/iframes/outer-frame.html
new file mode 100644
index 00000000000..2c244655595
--- /dev/null
+++ b/components/dialog/demo/iframes/outer-frame.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<meta name="viewport" content="width=device-width, initial-scale=1.0">
+		<meta charset="UTF-8">
+		<link rel="stylesheet" href="../../../demo/styles.css" type="text/css">
+		<script type="module">
+			import '../../../demo/demo-page.js';
+			import '../../../button/button.js';
+			import '../../dialog-fullscreen.js';
+			
+			window.OpenFullscreenDialog = function() {
+				const dialog = window.document.querySelector('#dialogFullscreen');
+				dialog.opened = true;
+			};
+		</script>
+	</head>
+	<body unresolved>
+		<!-- <button></button> Uncomment and it will be fixed -->
+		<iframe src="opener-frame.html" style="border: none; display: block; height: 400px; width: 100%;"></iframe>
+		<d2l-dialog-fullscreen id="dialogFullscreen" title-text="Fullscreen Title">
+			<p>Deadlights jack lad schooner scallywag dance the hempen jig carouser broadside cable strike colors. Bring a spring upon her cable holystone blow the man down spanker</p>
+			<p>Shiver me timbers to go on account lookout wherry doubloon chase. Belay yo-ho-ho keelhaul squiffy black spot yardarm spyglass sheet transom heave to.</p>
+			<p>Trysail Sail ho Corsair red ensign hulk smartly boom jib rum gangway. Case shot Shiver me timbers gangplank crack Jennys tea cup ballast Blimey lee snow crow's nest rutters. Fluke jib scourge of the seven seas boatswain schooner gaff booty Jack Tar transom spirits.</p>
+			<p>Deadlights jack lad schooner scallywag dance the hempen jig carouser broadside cable strike colors. Bring a spring upon her cable holystone blow the man down spanker</p>
+			<p>Shiver me timbers to go on account lookout wherry doubloon chase. Belay yo-ho-ho keelhaul squiffy black spot yardarm spyglass sheet transom heave to.</p>
+			<p>Trysail Sail ho Corsair red ensign hulk smartly boom jib rum gangway. Case shot Shiver me timbers gangplank crack Jennys tea cup ballast Blimey lee snow crow's nest rutters. Fluke jib scourge of the seven seas boatswain schooner gaff booty Jack Tar transom spirits.</p>
+			<d2l-button>Button</d2l-button>
+			<d2l-button slot="footer" primary data-dialog-action="save">Save</d2l-button>
+			<d2l-button slot="footer" data-dialog-action>Cancel</d2l-button>
+		</d2l-dialog-fullscreen>
+	</body>
+</html>
diff --git a/index.html b/index.html
index 9820e748e0e..b6efc5099ff 100644
--- a/index.html
+++ b/index.html
@@ -63,6 +63,7 @@ <h2 class="d2l-heading-3">Components</h2>
 		<li>
 			Dialogs
 			<ul>
+				<li><a href="components/dialog/demo/dialog-iframe.html">d2l-dialog (with iframes)</a></li>
 				<li><a href="components/dialog/demo/dialog.html">d2l-dialog</a></li>
 				<li><a href="components/dialog/demo/dialog-nested.html">d2l-dialog (Nested)</a></li>
 				<li><a href="components/dialog/demo/dialog-confirm.html">d2l-dialog-confirm</a></li>
