Haketilo

/**

 * Myext handling of page actions in content scripts

 *

 * Copyright (C) 2021 Wojtek Kosior

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

 */

"use strict";

(() => {

    const CONNECTION_TYPE = window.CONNECTION_TYPE;

    const browser = window.browser;

    var port;

    var loaded = false;

    var scripts_awaiting = [];

    var nonce;

    function handle_message(message)

    {

	console.log(["message", message]);

	if (message.inject === undefined)

	    return;

	for (let script_text of message.inject) {

	    if (loaded)

		add_script(script_text);

	    else

		scripts_awaiting.push(script_text);

	}

    }

    function document_loaded(event)

    {

	console.log("loaded");

	loaded = true;

	for (let script_text of scripts_awaiting)

	    add_script(script_text);

	scripts_awaiting = undefined;

    }

    function add_script(script_text)

    {

	let script = document.createElement("script");

	script.textContent = script_text;

	script.setAttribute("nonce", nonce);

	document.body.appendChild(script);

    }

    function handle_page_actions(script_nonce) {

	document.addEventListener("DOMContentLoaded", document_loaded);

	port = browser.runtime.connect({name : CONNECTION_TYPE.PAGE_ACTIONS});

	port.onMessage.addListener(handle_message);

	port.postMessage({url: document.URL});

	nonce = script_nonce;

    }

    window.handle_page_actions = handle_page_actions;

})();