/*******************************************************************************

    µBlock - a browser extension to block requests.
    Copyright (C) 2014 The µBlock authors

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program 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 this program.  If not, see {http://www.gnu.org/licenses/}.

    Home: https://github.com/gorhill/uBlock
*/

/* global APP_SHUTDOWN, APP_STARTUP */
/* exported startup, shutdown, install, uninstall */

'use strict';

/******************************************************************************/

let bgProcess;

/******************************************************************************/

function startup(data, reason) {
    bgProcess = function(e) {
        if (e) {
            this.removeEventListener('DOMContentLoaded', bgProcess);
        }

        let hDoc = Components.classes['@mozilla.org/appshell/appShellService;1']
            .getService(Components.interfaces.nsIAppShellService)
            .hiddenDOMWindow.document;

        bgProcess = hDoc.documentElement.appendChild(
            hDoc.createElementNS('http://www.w3.org/1999/xhtml', 'iframe')
        );
        bgProcess.setAttribute('src', 'chrome://ublock/content/background.html');
    };

    if (reason === APP_STARTUP) {
        let ww = Components.classes['@mozilla.org/embedcomp/window-watcher;1']
                    .getService(Components.interfaces.nsIWindowWatcher);

        ww.registerNotification({
            observe: function(win) {
                ww.unregisterNotification(this);
                win.addEventListener('DOMContentLoaded', bgProcess);
            }
        });
    }
    else {
        bgProcess();
    }
}

/******************************************************************************/

function shutdown(data, reason) {
    if (reason !== APP_SHUTDOWN) {
        bgProcess.parentNode.removeChild(bgProcess);
    }
}

/******************************************************************************/

function install() {
    // https://bugzil.la/719376
    Components.classes['@mozilla.org/intl/stringbundle;1']
        .getService(Components.interfaces.nsIStringBundleService).flushBundles();
}

/******************************************************************************/

function uninstall() {}

/******************************************************************************/