Script to implement a history of the seen approach for some news sites. Details at https://github.com/theoky/HistoryOfTheSeen
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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. Details at https://github.com/theoky/HistoryOfTheSeen
// @author Theoky
// @version 0.40
// @lastchanges semicolons, upTriggers, clean DB only daily
// @license GNU GPL version 3
// @released 2014-02-20
// @updated 2014-08-31
// @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/*
// @include http*://notalwaysright.com/
// @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: 5, // age in days after a url is deleted from the store
// < 0 erases all dates (disables history)
targetOpacity: 0.3,
targetOpacity4Dim: 0.65,
steps: 10,
dimInterval: 30000,
expireAllDomains: true, // On fast machines this can be true and expires
// all domains in the database with each call. If false,
// only the urls of the current domain are expired which
// is slightly faster.
cleanOnlyDaily: true
}
var perUrlSettings = [
{
url : '.*\.?derstandard\.at',
// TODO: der, die, das standard
upTrigger: "../a",
parentHints : [
"ancestor::div[contains(concat(' ', @class, ' '), ' text ')]",
"ancestor::ul[@class='stories']" ]
},
{
url : 'notalwaysright\.com',
upTrigger: "../a[@rel='bookmark']",
parentHints : [ "ancestor::div[contains(concat(' ', @class, ' '), ' post ')]" ]
},
{
url : '.*\.?golem.de',
upTrigger: "../a",
parentHints : [ "ancestor::li",
"ancestor::section[@id='index-promo']",
"ancestor::section[contains(concat(' ', @class, ' '), ' promo ')]" ]
},
{
url : '.*\.?reddit.com',
// class="title may-blank srTagged imgScanned"
upTrigger: "../a[contains(@class, 'title') and contains(@class, 'may-blank')]",
parentHints : [ "ancestor::div[contains(concat(' ', @class, ' '), ' thing ')]" ]
}
]
var dimMap = {};
var countDownTimer = defaultSettings.steps;
var theHRefs = null;
var curSettings = null;
var keyLastExpireOp = "lastExpire";
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 resetUrlsForCurrentHelper(dKey, domainOrUri) {
if (confirm('Are you sure you want to erase the seen history for ' +
domainOrUri + '?')) {
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[dKey] == domainOrUri) {
GM_deleteValue(key);
}
}
}
document.location.reload(true);
}
}
function resetUrlsForCurrentDomain() {
resetUrlsForCurrentHelper("domain", document.domain)
}
function resetUrlsForCurrentSite() {
resetUrlsForCurrentHelper("base", document.baseURI)
}
function expireUrls() {
if (defaultSettings.cleanOnlyDaily) {
lastExpireDate = new Date(GM_getValue(keyLastExpireOp, nDaysOlderFromNow(2)));
diff = Math.abs((new Date()) - lastExpireDate);
if (diff / 1000 / 3600 / 24 < 1) {
// less than one day -> no DB cleaning
return;
}
}
var keys = GM_listValues();
if (!keys) {
return;
}
var cutOffDate = nDaysOlderFromNow(defaultSettings.ageOfUrl);
for (var i=0, key=null; key=keys[i]; i++) {
if (key == keyLastExpireOp){
continue;
}
var dict = JSON.parse(GM_getValue(key, "{}"));
if(dict) {
try {
// console.log(dict["domain"], cutOffDate.getTime(), dict["date"]);
if (cutOffDate.getTime() > dict["date"]) {
if (defaultSettings.expireAllDomains ||
(dict["domain"] == document.domain))
{
GM_deleteValue(key);
}
}
} catch (e) {
console.log(e);
}
}
else {
console.log('Error! JSON.parse failed - dict is likely to be corrupted.');
}
}
GM_setValue(keyLastExpireOp, new Date());
}
function nDaysOlderFromNow(age, aDate, zeroHour) {
aDate = typeof aDate !== 'undefined' ? aDate : new Date();
zeroHour = typeof zeroHour !== 'undefined' ? zeroHour : true;
var dateStore = new Date(aDate.getTime());
var workDate = aDate;
if (age >= 0) {
workDate.setDate(dateStore.getDate() - age);
if (zeroHour) {
workDate.setHours(0,0,0,0);
}
}
return workDate;
}
/*
* Find the settings for a given URL
*/
function findPerUrlSettings(theSettings, aDomain) {
for (var i=0; i < theSettings.length; ++i) {
var myRegExp = new RegExp(theSettings[i].url, 'i');
if (aDomain.match(myRegExp)) {
return theSettings[i];
}
}
}
/*
* Find the parent element as specified in the settings.
*/
function locateParentElem(curSettings, aDomain, aRoot) {
if (!curSettings) {
return null;
}
// console.log("locateParentElem 1", curSettings.url);
var res = null;
for (xpath = 0; xpath < curSettings.parentHints.length; ++xpath) {
// console.log("locateParentElem 2", curSettings.parentHints[xpath], aRoot);
res = document.evaluate(curSettings.parentHints[xpath], aRoot, null, 9, null).singleNodeValue;
if (res) {
// console.log("locateParentElem found something");
return res;
}
}
return res;
}
/*
* Check if the current node qualifies for looking up the hierarchy.
*/
function goUp(curSettings, aRoot) {
if (!curSettings) {
return null;
}
res = null;
if (curSettings.upTrigger != "") {
res = document.evaluate(curSettings.upTrigger, aRoot, null, 9, null).singleNodeValue;
}
return res != null
}
function dimLinks() {
interval = (1 - defaultSettings.targetOpacity4Dim)/defaultSettings.steps;
countDownTimer = countDownTimer - 1;
curOpacity = defaultSettings.targetOpacity4Dim + 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);
}
}
// Main part
// Menus
GM_registerMenuCommand("Remove the seen history for this site.", resetUrlsForCurrentSite);
GM_registerMenuCommand("Remove the seen history for this domain.", resetUrlsForCurrentDomain);
GM_registerMenuCommand("Remove all seen history (for all sites)!", resetAllUrls);
function run_script() {
// Vars
var allHrefs = document.getElementsByTagName("a");
var theBase = document.baseURI;
var theDomain = document.domain;
var elemMap = {};
dimMap = {};
curSettings = findPerUrlSettings(perUrlSettings, theDomain);
// console.log(curSettings);
// expire old data
expireUrls();
// 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
done = false;
if(goUp(curSettings, allHrefs[i])) {
pe = locateParentElem(curSettings, theDomain, allHrefs[i])
// console.log("locate parent done", pe);
if (pe) {
pe.style.opacity = defaultSettings.targetOpacity;
done = true;
}
}
if (!done) {
// change display
allHrefs[i].style.opacity = defaultSettings.targetOpacity;
}
} else {
// key not found, store it with current date
elemMap[hash] = {"domain":theDomain, "date":(new Date()).getTime(), "base":theBase};
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);
}
run_script();
//})();