File: blob-url-factory.html

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<body>
<script src="/common/utils.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="script-factory.js"></script>
<script>
const query = new URLSearchParams(window.location.search);
const id = query.get("id");
const variant = query.get("variant");
let parent = "parent";
let useDispatcher = false;

if (variant === "subframe") {
  parent = "parent.parent";
} else if (variant === "popup") {
  parent = "opener.parent";
} else if (variant === "popup-dispatch") {
  useDispatcher = true;
}

const blobContent = `
  <!doctype html>
  <base href="${window.location.href}">
  <script src="/common/utils.js"><\/script>
  <script src="/common/dispatcher/dispatcher.js"><\/script>

  <script>${createScript(window.origin, query.get("crossOrigin"), parent, id, useDispatcher)}<\/script>
`;
const blob = new Blob([blobContent], { type: "text/html" });
const blobURL = URL.createObjectURL(blob);
if (variant === "subframe") {
  const frame = document.createElement("iframe");
  frame.src = blobURL;
  document.body.append(frame);
} else if (variant === "popup" || variant === "popup-dispatch") {
  window.open(blobURL);
} else {
  window.location = blobURL;
}
</script>