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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, vAPI, uDom */
/******************************************************************************/
(function() {
/******************************************************************************/
var cachedUserFilters = '';
/******************************************************************************/
var messager = vAPI.messaging.channel('1p-filters.js');
/******************************************************************************/
// This is to give a visual hint that the content of user blacklist has changed.
function userFiltersChanged() {
uDom('#userFiltersApply').prop(
'disabled',
uDom('#userFilters').val().trim() === cachedUserFilters
);
}
/******************************************************************************/
function renderUserFilters() {
var onRead = function(details) {
if ( details.error ) {
return;
}
cachedUserFilters = details.content.trim();
uDom('#userFilters').val(details.content);
};
messager.send({ what: 'readUserFilters' }, onRead);
}
/******************************************************************************/
function allFiltersApplyHandler() {
messager.send({ what: 'reloadAllFilters' });
uDom('#userFiltersApply').prop('disabled', true );
}
/******************************************************************************/
function handleImportFilePicker() {
var fileReaderOnLoadHandler = function() {
var textarea = uDom('#userFilters');
textarea.val([textarea.val(), this.result].join('\n').trim());
userFiltersChanged();
};
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();
};
/******************************************************************************/
function exportUserFiltersToFile() {
chrome.downloads.download({
'url': 'data:text/plain,' + encodeURIComponent(uDom('#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: uDom('#userFilters').val()
};
messager.send(request, onWritten);
}
/******************************************************************************/
uDom.onLoad(function() {
// Handle user interaction
uDom('#importUserFiltersFromFile').on('click', startImportFilePicker);
uDom('#importFilePicker').on('change', handleImportFilePicker);
uDom('#exportUserFiltersToFile').on('click', exportUserFiltersToFile);
uDom('#userFilters').on('input', userFiltersChanged);
uDom('#userFiltersApply').on('click', userFiltersApplyHandler);
renderUserFilters();
});
/******************************************************************************/
// https://www.youtube.com/watch?v=UNilsLf6eW4
})();
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