uBlock/js/1p-filters.js

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JavaScript
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2014-06-23 16:42:43 -06:00
/*******************************************************************************
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, $ */
/******************************************************************************/
(function() {
/******************************************************************************/
var cachedUserFilters = '';
/******************************************************************************/
messaging.start('1p-filters.js');
/******************************************************************************/
// This is to give a visual hint that the content of user blacklist has changed.
function userFiltersChanged() {
$('#userFiltersApply')
.attr(
'disabled',
$('#userFilters').val().trim() === cachedUserFilters
);
}
/******************************************************************************/
function renderUserFilters() {
var onRead = function(details) {
if ( details.error ) {
return;
}
cachedUserFilters = details.content.trim();
$('#userFilters').val(details.content);
};
messaging.ask({ what: 'readUserFilters' }, onRead);
}
/******************************************************************************/
function allFiltersApplyHandler() {
messaging.tell({ what: 'reloadAllFilters' });
$('#userFiltersApply').attr('disabled', true );
}
/******************************************************************************/
function appendToUserFiltersFromFile() {
var input = $('<input />').attr({
type: 'file',
accept: 'text/plain'
});
var fileReaderOnLoadHandler = function() {
var textarea = $('#userFilters');
textarea.val(textarea.val() + '\n' + this.result);
userFiltersChanged();
};
var filePickerOnChangeHandler = function() {
$(this).off('change', filePickerOnChangeHandler);
var file = this.files[0];
if ( !file ) {
return;
}
if ( file.type.indexOf('text') !== 0 ) {
return;
}
var fr = new FileReader();
fr.onload = fileReaderOnLoadHandler;
fr.readAsText(file);
input.off('change', filePickerOnChangeHandler);
};
input.on('change', filePickerOnChangeHandler);
input.trigger('click');
}
/******************************************************************************/
function exportUserFiltersToFile() {
chrome.downloads.download({
'url': 'data:text/plain,' + encodeURIComponent($('#userFilters').val()),
'filename': 'my-ublock-filters.txt',
'saveAs': true
});
}
/******************************************************************************/
function userFiltersApplyHandler() {
var onWritten = function(details) {
if ( details.error ) {
return;
}
cachedUserFilters = details.content.trim();
userFiltersChanged();
allFiltersApplyHandler();
};
var request = {
what: 'writeUserFilters',
content: $('#userFilters').val()
};
messaging.ask(request, onWritten);
}
/******************************************************************************/
$(function() {
// Handle user interaction
$('#importUserFiltersFromFile').on('click', appendToUserFiltersFromFile);
$('#exportUserFiltersToFile').on('click', exportUserFiltersToFile);
$('#userFilters').on('input propertychange', userFiltersChanged);
$('#userFiltersApply').on('click', userFiltersApplyHandler);
renderUserFilters();
});
/******************************************************************************/
})();