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feat: add embed.html — single-file srcdoc demo with Vega-Lite #13

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Merged
ihatexcel merged 1 commit into from
May 11, 2026
Merged

feat: add embed.html — single-file srcdoc demo with Vega-Lite #13

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1 change: 1 addition & 0 deletions .github/workflows/build.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,7 @@ jobs:
cp docs/child.html _site/child.html
cp docs/child-simple.html _site/child-simple.html
cp docs/child-chart.html _site/child-chart.html
cp docs/embed.html _site/embed.html
cp dist/index.iife.js _site/iframe-flight.iife.js
cp dist/index.js _site/iframe-flight.esm.js

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136 changes: 136 additions & 0 deletions docs/embed.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,136 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>iframe-flight × Vega-Lite</title>
<script type="importmap">
{"imports": {"iframe-flight": "https://ihatexcel.github.io/iframe-flight/iframe-flight.esm.js"}}
</script>
<style>
*, *::before, *::after { box-sizing: border-box; margin: 0; }
body { font-family: system-ui, -apple-system, sans-serif; padding: 2rem; background: #fafafa; color: #18181b; }
h1 { font-size: 1rem; font-weight: 600; margin-bottom: 1rem; }
.bar { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
button {
padding: 6px 16px; border-radius: 6px; border: 1px solid #e4e4e7;
background: #18181b; color: #fff; font-size: 13px; cursor: pointer;
}
button:disabled { opacity: 0.35; cursor: not-allowed; }
#status { font-size: 12px; font-family: monospace; color: #71717a; }
iframe {
display: block; width: 100%; height: 480px;
border: 1px solid #e4e4e7; border-radius: 10px;
background: #fff;
}
</style>
</head>
<body>

<h1>iframe-flight × Vega-Lite — single file, no install</h1>

<div class="bar">
<button id="btn" disabled>New snapshot</button>
<span id="status">Connecting…</span>
</div>

<iframe id="frame"></iframe>

<script type="module">
import { ArrowParentEmitter, tableFromArrays, tableToIPC } from 'iframe-flight';

// ── Child iframe HTML — injected via srcdoc, no separate file needed ──────
const CHILD = `<!DOCTYPE html>
<html><head><meta charset="UTF-8">
<script type="importmap">
{"imports":{"iframe-flight":"https://ihatexcel.github.io/iframe-flight/iframe-flight.esm.js"}}
<\/script>
<style>body{margin:0;padding:12px 16px;font-family:system-ui}<\/style>
</head><body>
<div id="c"></div>
<script type="module">
import { ArrowChildReceiver } from 'iframe-flight';
import vegaEmbed from 'https://cdn.jsdelivr.net/npm/vega-embed@6/+esm';

new ArrowChildReceiver({ allowedOrigins:['*'] }).onData(async result => {
const rows = [];
const t = result.table;
for (let i = 0; i < t.numRows; i++) {
const row = {};
t.schema.fields.forEach((f, ci) => { row[f.name] = t.getChildAt(ci).get(i); });
rows.push(row);
}
await vegaEmbed('#c', {
width: 'container',
data: { values: rows },
mark: { type: 'bar', cornerRadiusEnd: 5 },
encoding: {
y: { field: 'product', type: 'nominal', sort: '-x', title: null,
axis: { labelFontSize: 13 } },
x: { field: 'revenue', type: 'quantitative', title: 'Revenue ($M)',
axis: { gridColor: '#f4f4f5', labelColor: '#71717a', titleColor: '#71717a' } },
color: { field: 'growth', type: 'quantitative', title: 'Growth %',
scale: { scheme: 'redyellowgreen', domain: [-25, 25] },
legend: { orient: 'right', format: '+.0f', labelFontSize: 10, titleFontSize: 10 } },
tooltip: [
{ field: 'product' },
{ field: 'revenue', title: 'Revenue ($M)', format: '.1f' },
{ field: 'growth', title: 'Growth %', format: '+.1f' },
{ field: 'units', title: 'Units', format: ',' }
]
},
config: { view: { stroke: null }, background: '#fff',
font: 'system-ui, -apple-system, sans-serif' }
}, { actions: false });
});
<\/script>
</body></html>`;

// ── Data ──────────────────────────────────────────────────────────────────
const PRODUCTS = ['Aurora','Beacon','Catalyst','Dynamo','Ember',
'Forge','Galaxy','Helix','Ignite','Jupiter'];

function snapshot() {
const p = PRODUCTS;
return tableToIPC(tableFromArrays({
product: p,
revenue: Float64Array.from(p.map(() => Math.random() * 90 + 10)),
growth: Float64Array.from(p.map(() => Math.random() * 50 - 25)),
units: Int32Array.from(p.map(() => Math.floor(Math.random() * 45000 + 5000))),
}));
}

// ── Wire-up ───────────────────────────────────────────────────────────────
const frame = document.getElementById('frame');
const btn = document.getElementById('btn');
const status = document.getElementById('status');

frame.srcdoc = CHILD;

const emitter = new ArrowParentEmitter(frame, {
handshakeTimeout: 20000,
allowedOrigins: ['*'],
});

emitter
.onReady(() => {
btn.disabled = false;
push();
})
.onError(err => {
status.textContent = `❌ ${err.message}`;
});

async function push() {
btn.disabled = true;
status.textContent = 'Sending…';
const ack = await emitter.send(snapshot());
status.textContent = `${ack.rows} rows · ${ack.processingTime}ms`;
btn.disabled = false;
}

btn.addEventListener('click', push);
</script>

</body>
</html>
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