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<!DOCTYPE html>
<meta charset="utf-8">
<style>
#screenshot-preview {width: 200px; height: 200px;}
</style>
<div id="url">$$URL$$</div>
<div id="details">$$DETAILS$$</div>
<div id="label">$$LABEL$$</div>
<div id="screenshot-preview">Fail</div>
<script>
"use strict";
let preview = document.getElementById("screenshot-preview");
const CONFIG = {
url: {
element: document.getElementById("url")
},
details: {
element: document.getElementById("details"),
toStringify: true
},
extra_labels: {
element: document.getElementById("label"),
toStringify: true
},
};
function getBlobAsDataURL(blob) {
return new Promise((resolve, reject) => {
let reader = new FileReader();
// eslint-disable-next-line mozilla/balanced-listeners
reader.addEventListener("error", (e) => {
reject(`There was an error reading the blob: ${e.type}`);
});
// eslint-disable-next-line mozilla/balanced-listeners
reader.addEventListener("load", (e) => {
resolve(e.target.result);
});
reader.readAsDataURL(blob);
});
}
function setPreviewBG(backgroundData) {
return new Promise((resolve) => {
preview.style.background = `url(${backgroundData})`;
resolve();
});
}
function sendReceivedEvent() {
window.dispatchEvent(new CustomEvent("ScreenshotReceived", {bubbles: true}));
}
function prepareContent(toStringify, content) {
if (toStringify) {
return JSON.stringify(content)
}
return content;
}
function appendMessage(message) {
for (const key in CONFIG) {
if (key in message) {
const field = CONFIG[key];
field.element.innerText = prepareContent(field.toStringify, message[key]);
}
}
}
// eslint-disable-next-line mozilla/balanced-listeners
window.addEventListener("message", function(event) {
if (event.data.screenshot instanceof Blob) {
preview.innerText = "Pass";
}
if (event.data.message) {
appendMessage(event.data.message);
}
getBlobAsDataURL(event.data.screenshot).then(setPreviewBG).then(sendReceivedEvent);
});
</script>