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144 lines
4.8 KiB
JavaScript
144 lines
4.8 KiB
JavaScript
/*******************************************************************************
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µMatrix - a Chromium browser extension to black/white list requests.
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Copyright (C) 2014 Raymond Hill
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uMatrix
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*/
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/* global vAPI, uDom */
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/******************************************************************************/
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uDom.onLoad(function() {
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'use strict';
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/******************************************************************************/
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var messager = vAPI.messaging.channel('about.js');
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/******************************************************************************/
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var backupUserDataToFile = function() {
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var userDataReady = function(userData) {
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vAPI.download({
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'url': 'data:text/plain,' + encodeURIComponent(JSON.stringify(userData)),
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'filename': uDom('[data-i18n="aboutBackupFilename"]').text()
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});
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};
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messager.send({ what: 'getAllUserData' }, userDataReady);
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};
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/******************************************************************************/
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function restoreUserDataFromFile() {
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var validateBackup = function(s) {
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var userData = null;
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try {
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userData = JSON.parse(s);
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}
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catch (e) {
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userData = null;
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}
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if ( userData === null ) {
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return null;
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}
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if ( typeof userData !== 'object' ||
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typeof userData.version !== 'string' ||
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typeof userData.when !== 'number' ||
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typeof userData.settings !== 'object' ||
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typeof userData.rules !== 'string' ||
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typeof userData.hostsFiles !== 'object' ) {
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return null;
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}
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return userData;
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};
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var fileReaderOnLoadHandler = function() {
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var userData = validateBackup(this.result);
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if ( !userData ) {
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window.alert(uDom('[data-i18n="aboutRestoreError"]').text());
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return;
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}
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var time = new Date(userData.when);
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var msg = uDom('[data-i18n="aboutRestoreConfirm"]').text()
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.replace('{{time}}', time.toLocaleString());
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var proceed = window.confirm(msg);
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if ( proceed ) {
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messager.send({ what: 'restoreAllUserData', userData: userData });
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}
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};
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var file = this.files[0];
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if ( file === undefined || file.name === '' ) {
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return;
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}
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if ( file.type.indexOf('text') !== 0 ) {
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return;
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}
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var fr = new FileReader();
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fr.onload = fileReaderOnLoadHandler;
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fr.readAsText(file);
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}
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/******************************************************************************/
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var startRestoreFilePicker = function() {
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var input = document.getElementById('restoreFilePicker');
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// Reset to empty string, this will ensure an change event is properly
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// triggered if the user pick a file, even if it is the same as the last
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// one picked.
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input.value = '';
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input.click();
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};
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/******************************************************************************/
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var resetUserData = function() {
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var proceed = window.confirm(uDom('[data-i18n="aboutResetConfirm"]').text());
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if ( proceed ) {
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messager.send({ what: 'resetAllUserData' });
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}
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};
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/******************************************************************************/
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(function() {
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var renderStats = function(details) {
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uDom('#aboutVersion').html(details.version);
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var template = uDom('[data-i18n="aboutStorageUsed"]').text();
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var storageUsed = '?';
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if ( typeof details.storageUsed === 'number' ) {
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storageUsed = details.storageUsed.toLocaleString();
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}
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uDom('#aboutStorageUsed').html(template.replace('{{storageUsed}}', storageUsed));
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};
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messager.send({ what: 'getSomeStats' }, renderStats);
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})();
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/******************************************************************************/
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uDom('#backupUserDataButton').on('click', backupUserDataToFile);
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uDom('#restoreUserDataButton').on('click', startRestoreFilePicker);
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uDom('#restoreFilePicker').on('change', restoreUserDataFromFile);
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uDom('#resetUserDataButton').on('click', resetUserData);
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/******************************************************************************/
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});
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