com.metreeca.mark.tasks.Serve.js Maven / Gradle / Ivy

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A minimalist static site generator.

There is a newer version: 0.9.1

/*
 * Copyright © 2019-2021 Metreeca srl
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

(function () {

	const styles=Array.from(document.querySelectorAll("style"))
		.map(style => style.src)
		.filter(src => src && src.startsWith(location.origin)) // ignore embedded styles
		.map(src => src.substring(location.origin.length));

	const scripts=Array.from(document.querySelectorAll("script"))
		.map(script => script.src)
		.filter(src => src && src.startsWith(location.origin)) // ignore embedded scripts
		.map(src => src.substring(location.origin.length));


	function resource(path) {
		return path === location.pathname
			|| styles.some(style => style === path)
			|| scripts.some(script => script === path);
	}

	function poll() {
		fetch("/~").then(response => response.text()).then(update => {

			if (resource(update)) {

				location.reload();

			} else {

				poll();

			}

		});
	}


	window.addEventListener("load", poll);

})();