uBlock/js/whitelist.js

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/*******************************************************************************
µBlock - a Chromium browser extension to block requests.
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 chrome, messaging, uDom */
/******************************************************************************/
(function() {
/******************************************************************************/
messaging.start('whitelist.js');
/******************************************************************************/
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() {
var s = uDom('#whitelist').val().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('#whitelist').val(cachedWhitelist);
};
messaging.ask({ what: 'getWhitelist' }, onRead);
};
/******************************************************************************/
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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() {
chrome.downloads.download({
'url': 'data:text/plain,' + encodeURIComponent(uDom('#whitelist').val()),
'filename': 'my-ublock-whitelist.txt',
'saveAs': true
});
};
/******************************************************************************/
var whitelistApplyHandler = function() {
cachedWhitelist = uDom('#whitelist').val().trim();
var request = {
what: 'setWhitelist',
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whitelist: cachedWhitelist
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};
messaging.tell(request);
whitelistChanged();
};
/******************************************************************************/
uDom.onLoad(function() {
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uDom('#importWhitelistFromFile').on('click', startImportFilePicker);
uDom('#importFilePicker').on('change', handleImportFilePicker);
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uDom('#exportWhitelistToFile').on('click', exportWhitelistToFile);
uDom('#whitelist').on('input', whitelistChanged);
uDom('#whitelistApply').on('click', whitelistApplyHandler);
renderWhitelist();
});
/******************************************************************************/
})();