Configurable popup blocker that blocks all popup windows by default. You can easily open the blocked popup or whitelist a domain, directly from the page.
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// ==UserScript==
// @name Ultra Popup Blocker
// @description Configurable popup blocker that blocks all popup windows by default. You can easily open the blocked popup or whitelist a domain, directly from the page.
// @namespace https://github.com/eskander
// @author eskander
// @version 2.2
// @include *
// @license MIT
// @homepage https://github.com/eskander/ultra-popup-blocker
// @supportURL https://github.com/eskander/ultra-popup-blocker/issues
// @compatible firefox Tampermonkey recommended
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_deleteValue
// @grant GM_listValues
// @grant GM_openInTab
// @grant GM_registerMenuCommand
// ==/UserScript==
(function () {
// ============================== CONFIG =================================
var bDisplayMessageOnPopupBlocked = true;
var bDisplayOpenPopupLink = true;
var bDisplayWhiteListThisDomainLink = true;
var LOG_ID = "ultra_popup_blocker"; // HTML ID in the page
// ============================ FUNCTIONS ================================
var global = unsafeWindow; // reference to page's "window" through GreaseMonkey
// Helper to create a button with inner text @text executing onclick @clickCallback,
// appended as a child of @logDiv
var putButton = function (logDiv, text, clickCallback, inlineStyle) {
var button = document.createElement("button");
button.innerHTML = text;
button.style.cssText = "text-decoration: none;\
color: black;\
cursor: pointer;\
margin: 0 5px;\
padding: 1px 3px;\
background-color: rgb(255, 255, 255);\
border-width: 0px;\
border-radius: 5px;\
color: black;" + inlineStyle;
logDiv.appendChild(button);
button.addEventListener("click", clickCallback);
};
// Helper to create a button (child of @logDiv) which onclick whitelists @domain
// in internal Firefox storage.
var putWhitelistButton = function (logDiv, domain) {
putButton(logDiv, "Whitelist 🗸", function () {
GM_setValue("whitelisted_" + domain, true);
});
};
// Helper to create a text node with @text and append to @logDiv
var putText = function (logDiv, text) {
var node = document.createTextNode(text);
logDiv.appendChild(node);
};
// Return logger div, or create it ad-hoc.
var getLogDiv = function () {
var logDiv = document.getElementById(LOG_ID);
if (!logDiv) {
logDiv = document.createElement("div");
logDiv.setAttribute("id", LOG_ID);
logDiv.style.cssText = "position: fixed;\
bottom: 0;\
left: 0;\
z-index: 99999;\
width: 100%;\
padding: 5px 5px 5px 5px;\
font: status-bar;\
background-color: black;\
color: white;";
document.body.appendChild(logDiv);
}
return logDiv;
};
// Get top domain to whitelist.
var getDomainsArray = function (documentDomain) {
// e.g. domain = www.google.com, topDomain = google.com
var d1 = documentDomain;
var domainsArr = [];
while (d1.split(".").length > 2) {
d1 = d1.substring(d1.indexOf('.') + 1);
}
domainsArr.push(d1);
return domainsArr;
};
// Checks if domain we're currently browsing has been whitelisted by the user
// to display popups.
var isCurrentDomainWhiteListed = function () {
var domains = getDomainsArray(document.domain);
var whitelisted = domains.some(function (d) {
return GM_getValue("whitelisted_" + d);
}); // if any 'd' in 'domains' was whitelisted, we return true
return whitelisted;
};
// "window.open()" returns Window which might be then used by the originator page
// to focus the popup (annoying splash popup) or blur it to retain focus in the original page
// (pay-by-impressions popup, I don't need it to actually see it).
// We need to return the fake window to not encounter JS runtime error when the popup originator
// page wants to call focus() or blur().
var FakeWindow = {
blur: function () {
return false;
},
focus: function () {
return false;
}
};
// Storing a reference to real "window.open" method in case we wanted
// to actually open a blocked popup
var realWindowOpen = global.open;
// This function will be called each time a script wants to open a new window,
// if the blocker is activated.
// We handle the blocking & messaging logic here.
var fakeWindowOpen = function (url) {
if (!bDisplayMessageOnPopupBlocked) {
return FakeWindow;
}
var logDiv = getLogDiv();
logMessage(logDiv, url);
if (bDisplayOpenPopupLink) {
displayOpenPopupLink(logDiv, arguments);
}
if (bDisplayWhiteListThisDomainLink) {
displayWhiteListThisDomainLink(logDiv);
}
displayCloseButton(logDiv);
displayConfigButton(logDiv);
return FakeWindow; // see the doc of FakeWindow
};
var logMessage = function (logDiv, url) {
global.upb_counter = (global.upb_counter || 0);
url = (url[0] == '/') ? document.domain + url : url;
if (global.upb_counter++ == 0) {
var msg = ["<b>[UPB]</b> Blocked <b>1</b> popup: <u>", url, "</u>"].join("");
} else {
var msg = ["<b>[UPB]</b> Blocked <b>", global.upb_counter, "</b> popups, last: <u>", url, "</u>"].join("");
}
logDiv.innerHTML = msg;
console.log(msg);
logDiv.style.display = "block";
};
var displayOpenPopupLink = function (logDiv, realArguments) {
putButton(logDiv, "Open ↗", function () {
realWindowOpen.apply(null, realArguments);
});
};
var displayWhiteListThisDomainLink = function (logDiv) {
var domainsArr = getDomainsArray(document.domain);
putWhitelistButton(logDiv, domainsArr[0]);
};
var displayCloseButton = function (logDiv) {
putButton(logDiv, "Close ⨯", function () {
logDiv.style.display = 'none';
}, 'background-color: #a00;\
color: white;\
margin: 0 10px 0 0;\
float: right');
};
var displayConfigButton = function (logDiv) {
putButton(logDiv, "Config ⚙", function () {
GM_openInTab("https://eskander.github.io/ultra-popup-blocker/configure.html", false);
}, 'float:right');
};
// Override browser's "window.open" with our own implementation.
var activateBlocker = function () {
global.open = fakeWindowOpen;
};
// ============================== SETTINGS PAGE =================================
// Add configure link to Tampermonkey's menu
GM_registerMenuCommand('Configure whitelist', function () {
GM_openInTab("https://eskander.github.io/ultra-popup-blocker/configure.html", false);
}, 'r');
// Only run whitelisting mechanism on the appropriate page
if (window.location.href === "https://eskander.github.io/ultra-popup-blocker/configure.html") {
// Add listener to the add button
document.getElementsByClassName("addBtn")[0].addEventListener("click", function () {
newElement();
});
// Create a "close" button and append it to each list item
var Nodelist = document.getElementsByTagName("LI");
for (var i = 0; i < Nodelist.length; i++) {
var span = document.createElement("SPAN");
var txt = document.createTextNode("\u00D7");
span.className = "close";
span.appendChild(txt);
span.onclick = function () {
var div = this.parentElement;
var domain = div.innerText.replace("\n\u00D7", "");
GM_deleteValue("whitelisted_" + domain);
div.style.display = "none";
console.log('[UPB] Domain removed from whitelist: ' + domain);
}
Nodelist[i].appendChild(span);
}
// Create a new list item when clicking on the "Add" button
var newElement = function () {
var inputValue = document.getElementById("Input").value;
if (inputValue === '') {
alert("You must write a domain or subdomain to whitelist.");
} else {
addElement(inputValue);
}
document.getElementById("Input").value = "";
}
var addElement = function (Value) {
var li = document.createElement("li");
var t = document.createTextNode(Value);
li.appendChild(t);
document.getElementById("List").appendChild(li);
GM_setValue("whitelisted_" + Value, true);
console.log('[UPB] Domain added to whitelist: ' + Value);
// Add a close button to the newly created item
var span = document.createElement("SPAN");
var txt = document.createTextNode("\u00D7");
span.className = "close";
span.appendChild(txt);
span.onclick = function () {
var div = this.parentElement;
var domain = div.innerText.replace("\n\u00D7", "");
GM_deleteValue("whitelisted_" + domain);
div.style.display = "none";
console.log('[UPB] Domain removed from whitelist: ' + domain);
}
li.appendChild(span);
}
// Show already stored elements in the list
var storedWhitelist = GM_listValues();
storedWhitelist.forEach(populate);
console.log(storedWhitelist);
function populate(value, index, array) {
addElement(value.replace("whitelisted_", ""));
}
}
// ============================ LET'S RUN IT ================================
var disabled = isCurrentDomainWhiteListed();
if (disabled) {
console.log('[UPB] Current domain was found on a white list. UPB disabled.');
} else {
activateBlocker();
}
})();