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/*
* This file is part of Adblock Plus <https://adblockplus.org/>,
* Copyright (C) 2006-2017 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()
{
let {Services} = Cu.import("resource://gre/modules/Services.jsm", {});
let {port} = require("messaging");
let {getFrames, isPrivate} = require("child/utils");
let {RequestNotifier} = require("child/requestNotifier");
function getFilters(window, callback)
{
let message = {
frames: getFrames(window),
payload: {
type: "filters.get",
what: "elemhideemulation"
}
};
port.emitWithResponse("ext_message", message).then(callback);
}
function addUserCSS(window, cssCode)
{
let uri = Services.io.newURI("data:text/css," + encodeURIComponent(cssCode),
null, null);
let utils = window.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils);
utils.loadSheet(uri, Ci.nsIDOMWindowUtils.USER_SHEET);
}
function initElemHideEmulation()
{
let scope = Object.assign({}, require("common"));
Services.scriptloader.loadSubScript(
"chrome://adblockplus/content/elemHideEmulation.js", scope);
let onContentWindow = (subject, topic, data) =>
{
if (!(subject instanceof Ci.nsIDOMWindow))
return;
let onReady = event =>
{
subject.removeEventListener("load", onReady);
let handler = new scope.ElemHideEmulation(
subject, getFilters.bind(null, subject), (selectors, filters) =>
{
if (selectors.length == 0)
return;
addUserCSS(subject, selectors.map(
selector => selector + "{display: none !important;}"
).join("\n"));
if (!isPrivate(subject))
port.emit("addHits", filters);
let docDomain = null;
try
{
// We are calling getFrames() here because it will consider
// "inheritance" for about:blank and data: frames.
docDomain = new URL(getFrames(subject)[0].location).hostname;
}
catch (e)
{
// Invalid URL?
}
for (let i = 0; i < filters.length; i++)
{
RequestNotifier.addNodeData(subject.document, subject.top, {
contentType: "ELEMHIDE",
docDomain: docDomain,
thirdParty: false,
location: "##" + selectors[i],
filter: filters[i],
filterType: "elemhideemulation"
});
}
}
);
handler.apply();
};
subject.addEventListener("load", onReady);
};
Services.obs.addObserver(onContentWindow, "content-document-global-created",
false);
onShutdown.add(() =>
{
Services.obs.removeObserver(onContentWindow,
"content-document-global-created");
});
}
initElemHideEmulation();
})();
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