uBlock/src/js/whitelist.js

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/*******************************************************************************
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µBlock - a browser extension to block requests.
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Copyright (C) 2014 Raymond Hill
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 vAPI, uDom */
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/******************************************************************************/
(function() {
'use strict';
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/******************************************************************************/
var messager = vAPI.messaging.channel('whitelist.js');
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/******************************************************************************/
var cachedWhitelist = '';
// Could make it more fancy if needed. But speed... It's a compromise.
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var reUnwantedChars = /[\x00-\x09\x0b\x0c\x0e-\x1f!"$'()<>{}|\\^\[\]`~]/;
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/******************************************************************************/
var whitelistChanged = function() {
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var s = uDom.nodeFromId('whitelist').value.trim();
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var bad = reUnwantedChars.test(s);
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uDom('#whitelistApply').prop(
'disabled',
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s === cachedWhitelist || bad
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);
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uDom('#whitelist').toggleClass('bad', bad);
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};
/******************************************************************************/
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var renderWhitelist = function() {
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var onRead = function(whitelist) {
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cachedWhitelist = whitelist;
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uDom.nodeFromId('whitelist').value = whitelist;
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};
messager.send({ what: 'getWhitelist' }, onRead);
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whitelistChanged();
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};
/******************************************************************************/
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var handleImportFilePicker = function() {
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var fileReaderOnLoadHandler = function() {
var textarea = uDom('#whitelist');
textarea.val([textarea.val(), this.result].join('\n').trim());
whitelistChanged();
};
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var file = this.files[0];
if ( file === undefined || file.name === '' ) {
return;
}
if ( file.type.indexOf('text') !== 0 ) {
return;
}
var fr = new FileReader();
fr.onload = fileReaderOnLoadHandler;
fr.readAsText(file);
};
/******************************************************************************/
var startImportFilePicker = function() {
var input = document.getElementById('importFilePicker');
// Reset to empty string, this will ensure an change event is properly
// triggered if the user pick a file, even if it is the same as the last
// one picked.
input.value = '';
input.click();
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};
/******************************************************************************/
var exportWhitelistToFile = function() {
var val = uDom('#whitelist').val().trim();
if ( val === '' ) {
return;
}
var now = new Date();
var filename = vAPI.i18n('whitelistExportFilename')
.replace('{{datetime}}', now.toLocaleString())
.replace(/ +/g, '_');
vAPI.download({
'url': 'data:text/plain;charset=utf-8,' + encodeURIComponent(val),
'filename': filename
});
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};
/******************************************************************************/
var whitelistApplyHandler = function() {
cachedWhitelist = uDom('#whitelist').val().trim();
var request = {
what: 'setWhitelist',
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whitelist: cachedWhitelist
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};
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messager.send(request, renderWhitelist);
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};
/******************************************************************************/
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var getCloudData = function() {
return uDom.nodeFromId('whitelist').value;
};
var setCloudData = function(data) {
if ( typeof data !== 'string' ) {
return;
}
uDom.nodeFromId('whitelist').value = data;
whitelistChanged();
};
self.cloud.onPush = getCloudData;
self.cloud.onPull = setCloudData;
/******************************************************************************/
uDom('#importWhitelistFromFile').on('click', startImportFilePicker);
uDom('#importFilePicker').on('change', handleImportFilePicker);
uDom('#exportWhitelistToFile').on('click', exportWhitelistToFile);
uDom('#whitelist').on('input', whitelistChanged);
uDom('#whitelistApply').on('click', whitelistApplyHandler);
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renderWhitelist();
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/******************************************************************************/
})();