source/features/embed-gist-via-iframe.tsx


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import select from 'select-dom';
import onetime from 'onetime';
import * as pageDetect from 'github-url-detection';

import features from '.';

function init(): void {
	const embedViaScript = select<HTMLButtonElement>('.file-navigation-option [value^="<script"]')!;
	const embedViaIframe = embedViaScript.cloneNode(true);

	// Remove analytics attributes
	embedViaIframe.removeAttribute('data-hydro-click');
	embedViaIframe.removeAttribute('data-hydro-click-hmac');

	// Set required content
	embedViaIframe.setAttribute('aria-checked', 'false');
	embedViaIframe.value = `<iframe src="${location.origin}${location.pathname}.pibb"></iframe>`;
	select('.select-menu-item-heading', embedViaIframe)!.textContent = 'Embed via <iframe>';
	select('.description', embedViaIframe)!.textContent = 'Embed this gist in your website via <iframe>.';

	// Modify description of the original embed type to distinguish the two items
	select('.select-menu-item-heading', embedViaScript)!.textContent = 'Embed via <script>';
	select('.description', embedViaScript)!.textContent = 'Embed this gist in your website via <script>.';

	embedViaScript.after(embedViaIframe);
}

void features.add(__filebasename, {
	include: [
		pageDetect.isSingleGist
	],
	init: onetime(init)
});