Script to implement a history of the seen approach for some news sites.
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// ==UserScript==
// @name History of the Seen
// @namespace https://github.com/theoky/HistoryOfTheSeen
// @description Script to implement a history of the seen approach for some news sites.
// @author Theoky
// @version 0.31
// @lastchanges changed md5 lib
// @license GNU GPL version 3
// @released 2014-02-20
// @updated 2014-08-14
// @homepageURL https://github.com/theoky/HistoryOfTheSeen
//
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_deleteValue
// @grant GM_registerMenuCommand
// @grant GM_listValues
//
// for testing (set greasemonkey.fileIsGreaseable)
// @include file://*testhistory.html
//
// @include http*://*.derstandard.at/*
// @include http*://*.faz.net/*
// @include http*://*.golem.de/*
// @include http*://*.handelsblatt.com/*
// @include http*://*.heise.de/newsticker/*
// @include http*://*.kleinezeitung.at/*
// @include http*://*.nachrichten.at/*
// @include http*://*.oe24.at/*
// @include http*://*.orf.at/*
// @include http*://orf.at/*
// @include http*://*.reddit.com/*
// @include http*://*.spiegel.de/*
// @include http*://*.sueddeutsche.de/*
// @include http*://*.welt.de/*
// @include http*://*.wirtschaftsblatt.at/*
// @include http*://*.zeit.de/*
// @include http*://dastandard.at/*
// @include http*://derstandard.at/*
// @include http*://diepresse.com/*
// @include http*://diestandard.at/*
// @include http*://kurier.at/*
// @include http*://slashdot.org/*
// @include http*://taz.de/*
// @require https://greasyfork.org/scripts/130-portable-md5-function/code/Portable%20MD5%20Function.js?version=10066
// was require md5.js
// was require http://crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/md5.js
// ==/UserScript==
// Copyright (C) 2014 T. Kopetzky - theoky
//
// 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/>.
//
// Tested with Firefox 31 and GreaseMonkey 2.1
//-------------------------------------------------
//Functions
//(function(){
var defaultSettings = {
ageOfUrl: 7, // age in days after a url is deleted from the store
// < 0 erases all dates (disables history)
targetOpacity: 0.3,
steps: 10,
dimInterval: 30000
}
var dimMap = {};
var countDownTimer = defaultSettings["steps"];
var theHRefs = null;
function resetAllUrls()
{
if (confirm('Are you sure you want to erase the complete seen history?')) {
var keys = GM_listValues();
for (var i=0, key=null; key=keys[i]; i++) {
GM_deleteValue(key);
}
document.location.reload(true);
}
}
function resetUrlsForCurrentSite()
{
if (confirm('Are you sure you want to erase the seen history for ' +
document.baseURI + '?')) {
var keys = GM_listValues();
for (var i=0, key=null; key=keys[i]; i++) {
var dict = JSON.parse(GM_getValue(key, "{}"));
if(dict) {
if (dict["base"] == document.baseURI) {
GM_deleteValue(key);
}
}
}
document.location.reload(true);
}
}
function expireUrlsForCurrentSite()
{
var keys = GM_listValues();
if (!keys) {
return;
}
var cutOffDate = new Date();
if (defaultSettings["ageOfUrl"] >= 0) {
cutOffDate.setHours(0,0,0,0);
cutOffDate.setDate((new Date()).getDate() - defaultSettings["ageOfUrl"]);
}
for (var i=0, key=null; key=keys[i]; i++) {
var dict = JSON.parse(GM_getValue(key, "{}"));
if(dict) {
// console.log(dict["base"], cutOffDate.getTime(), dict["date"]);
if ((dict["base"] == document.baseURI) &&
(cutOffDate.getTime() > dict["date"]))
{
GM_deleteValue(key);
}
}
else {
GM_log('Error! JSON.parse failed - dict is likely to be corrupted.');
}
}
}
// Main part
// Menus
GM_registerMenuCommand("Remove the seen history for this site.", resetUrlsForCurrentSite);
GM_registerMenuCommand("Remove all seen history (for all sites)!", resetAllUrls);
function run_script(){
// Vars
var allHrefs = document.getElementsByTagName("a");
var theBase = document.baseURI;
var elemMap = {};
dimMap = {};
// expire old data
expireUrlsForCurrentSite();
// Change the DOM
// First loop: gather all new links and make already seen opaque.
for(var i = 0; i < allHrefs.length; i++)
{
var hash = 'm' + hex_md5(allHrefs[i].href);
// setValue needs letter in the beginning, thus use of 'm'
var key = GM_getValue(hash);
// console.log(allHrefs[i].href, hash.toString());
if (typeof key != 'undefined') {
// key found -> loaded this reference already
// change display
allHrefs[i].style.opacity = defaultSettings["targetOpacity"];
} else {
// key not found, store it with current date
elemMap[hash] = {"base":theBase, "date":(new Date()).getTime()};
dimMap[hash] = allHrefs[i];
}
}
// remember all new urls to hide the next time
for (var e2 in elemMap) {
GM_setValue(e2, JSON.stringify(elemMap[e2]));
}
theHRefs = allHrefs;
to = setTimeout(dimLinks, defaultSettings["dimInterval"]);
}
function dimLinks() {
interval = (1 - defaultSettings["targetOpacity"])/defaultSettings["steps"];
countDownTimer = countDownTimer - 1;
curOpacity = defaultSettings["targetOpacity"] + interval*countDownTimer;
for(var i = 0; i < theHRefs.length; i++)
{
var hash = 'm' + hex_md5(theHRefs[i].href);
if (hash in dimMap) {
theHRefs[i].style.opacity = curOpacity;
}
}
if (countDownTimer > 0) {
to = setTimeout(dimLinks, defaultSettings["dimInterval"]);
}
}
run_script();
//})();