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polyfill.js
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polyfill.js
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/*
* This file is part of Adblock Plus <https://adblockplus.org/>,
* Copyright (C) 2006-present eyeo GmbH
*
* Adblock Plus is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* Adblock Plus is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.
*/
"use strict";
(function()
{
window.browser = {};
/* I18n */
const getLocaleCandidates = function(selectedLocale)
{
const candidates = [];
const defaultLocale = "en_US";
// e.g. "ja-jp-mac" -> "ja_JP", note that the part after the second
// dash is dropped, since we only support language and region
const parts = selectedLocale.split("-");
const language = parts[0];
const region = (parts[1] || "").toUpperCase();
if (region)
candidates.push(language + "_" + region);
candidates.push(language);
if (candidates.indexOf(defaultLocale) == -1)
candidates.push(defaultLocale);
return candidates;
};
const match = /[?&]locale=([\w-]+)/.exec(window.top.location.search);
const selectedLocale = (match) ? match[1] : "en_US";
const locales = getLocaleCandidates(selectedLocale);
const catalog = Object.create(null);
const catalogFile = window.location.pathname.replace(/.*\//, "")
.replace(/\..*/, "") + ".json";
const replacePlaceholder = function(text, placeholder, content)
{
return text.split("$" + placeholder + "$").join(content || "");
};
const parseMessage = function(rawMessage)
{
let text = rawMessage.message;
const placeholders = [];
for (const placeholder in rawMessage.placeholders)
{
const {content} = rawMessage.placeholders[placeholder];
if (/^\$\d+$/.test(content))
placeholders[parseInt(content.substr(1), 10) - 1] = placeholder;
else
text = replacePlaceholder(text, placeholder, content);
}
return [text, placeholders];
};
const readCatalog = function(locale, file)
{
const xhr = new XMLHttpRequest();
xhr.open("GET", "locale/" + locale + "/" + file, false);
xhr.overrideMimeType("text/plain");
try
{
xhr.send();
}
catch (e)
{
return;
}
if (xhr.status != 200 && xhr.status != 0)
return;
const rawCatalog = JSON.parse(xhr.responseText);
for (const msgId in rawCatalog)
{
if (!(msgId in catalog))
catalog[msgId] = parseMessage(rawCatalog[msgId]);
}
};
browser.i18n = {
getUILanguage()
{
return locales[0].replace(/_/g, "-");
},
getMessage(msgId, substitutions)
{
while (true)
{
const message = catalog[msgId];
if (message)
{
let text = message[0];
const placeholders = message[1];
if (!(substitutions instanceof Array))
substitutions = [substitutions];
for (let i = 0; i < placeholders.length; i++)
text = replacePlaceholder(text, placeholders[i], substitutions[i]);
return text;
}
if (locales.length == 0)
return "";
const locale = locales.shift();
readCatalog(locale, "common.json");
readCatalog(locale, "filter-validation.json");
readCatalog(locale, "issue-reporter.json");
readCatalog(locale, "popup.json");
readCatalog(locale, "updates-latest.json");
readCatalog(locale, catalogFile);
}
}
};
browser.contentSettings = {
cookies: {
get(details)
{
return Promise.resolve({setting: "allow"});
}
},
javascript: {
get(details)
{
return Promise.resolve({setting: "allow"});
}
}
};
browser.management = {
getAll()
{
return Promise.resolve([
{
enabled: true,
id: "cfhdojbkjhnklbpkdaibdccddilifddb",
name: "Adblock Plus",
type: "extension",
version: "3.4"
}
]);
}
};
// Workaround since HTMLCollection, NodeList, StyleSheetList, and CSSRuleList
// didn't have iterator support before Chrome 51.
// https://bugs.chromium.org/p/chromium/issues/detail?id=401699
for (const object of [HTMLCollection, NodeList, StyleSheetList, CSSRuleList])
{
if (!(Symbol.iterator in object.prototype))
object.prototype[Symbol.iterator] = Array.prototype[Symbol.iterator];
}
}());