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