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/**
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* This file is part of Haketilo.
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*
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* Function: Handle page actions in a content script.
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*
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* Copyright (C) 2021 Wojtek Kosior
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* Redistribution terms are gathered in the `copyright' file.
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*/
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/*
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* IMPORTS_START
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* IMPORT CONNECTION_TYPE
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* IMPORT browser
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* IMPORT report_script
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* IMPORT report_document_type
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* IMPORTS_END
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*/
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let policy;
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/* Snapshot url and content type early; these can be changed by other code. */
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let url;
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let is_html;
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let port;
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let loaded = false;
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let scripts_awaiting = [];
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function handle_message(message)
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{
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const [action, data] = message;
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if (action === "inject") {
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for (let script_text of data) {
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if (loaded)
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add_script(script_text);
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else
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scripts_awaiting.push(script_text);
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}
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}
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else {
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console.error(`Bad page action '${action}'.`);
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}
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}
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function document_ready(event)
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{
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loaded = true;
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for (let script_text of scripts_awaiting)
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add_script(script_text);
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scripts_awaiting = undefined;
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}
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function add_script(script_text)
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{
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if (!is_html)
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return;
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let script = document.createElement("script");
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script.textContent = script_text;
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script.setAttribute("nonce", policy.nonce);
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script.haketilo_payload = true;
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document.body.appendChild(script);
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report_script(script_text);
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}
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function handle_page_actions(_policy, doc_ready_promise) {
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policy = _policy;
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url = document.URL;
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is_html = document instanceof HTMLDocument;
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report_document_type(is_html);
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doc_ready_promise.then(document_ready);
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if (policy.payload) {
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port = browser.runtime.connect({name : CONNECTION_TYPE.PAGE_ACTIONS});
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port.onMessage.addListener(handle_message);
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port.postMessage({payload: policy.payload});
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}
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}
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/*
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* EXPORTS_START
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* EXPORT handle_page_actions
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* EXPORTS_END
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*/
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