Haketilo

/**

 * Hachette operations on DOM elements

 *

 * Copyright (C) 2021 Wojtek Kosior

 * Redistribution terms are gathered in the `copyright' file.

 */

function by_id(id)

{

    return document.getElementById(id);

}

const known_templates = new Map();

function get_template(template_id)

{

    let template = known_templates.get(template_id) || null;

    if (template)

	return template;

    for (const template_node of document.getElementsByTagName("TEMPLATE")) {

	template = template_node.content.getElementById(template_id);

	if (template)

	    break;

    }

    known_templates.set(template_id, template);

    return template;

}

function clone_template(template_id)

{

    const clone = get_template(template_id).cloneNode(true);

    const result_object = {};

    const to_process = [clone];

    while (to_process.length > 0) {

	const element = to_process.pop();

	const template_key = element.getAttribute("data-template");

	if (template_key)

	    result_object[template_key] = element;

	element.removeAttribute("id");

	element.removeAttribute("data-template");

	for (const child of element.children)

	    to_process.push(child);

    }

    return result_object;

}

/*

 * EXPORTS_START

 * EXPORT by_id

 * EXPORT get_template

 * EXPORT clone_template

 * EXPORTS_END

 */