The web, with a side of HackerNews. Shows a sidebar with HN comments if the link was opened from HN
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// ==UserScript==
// @name SideHN
// @namespace http://tampermonkey.net/
// @version 0.1
// @description The web, with a side of HackerNews. Shows a sidebar with HN comments if the link was opened from HN
// @author Alin Panaitiu
// @match https://*/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=news.ycombinator.com
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
window.addHNComments = (id) => {
// Create the iframe element
const iframe = document.createElement("iframe");
const bodyStyle = getComputedStyle(document.body);
// Set the source of the iframe to the Hacker News comments page for the given URL
iframe.src = `https://news.ycombinator.com/item?id=${id}`;
// Set the width and height of the iframe
iframe.style.width = "30%";
iframe.style.minWidth = "30%";
iframe.style.maxWidth = "30%";
iframe.style.height = "100%";
iframe.style.position = "fixed";
iframe.style.top = "0";
iframe.style.right = "-30%";
iframe.style.zIndex = 1000
// Create the close button (a right chevron placed on the left side of the iframe)
const closeButton = document.createElement("button");
closeButton.innerHTML = window.innerWidth >= 1024 ? "▸" : "◂";
closeButton.style.position = "fixed";
closeButton.style.top = "calc(50% - 3rem)";
closeButton.style.right = "0";
closeButton.style.height = "3rem";
closeButton.style.width = "1.5rem";
closeButton.style.backgroundColor = "hsla(21, 84%, 55%, 1.00)";
closeButton.style.fontSize = "1.5rem";
closeButton.style.cursor = "pointer";
closeButton.style.outline = "none";
closeButton.style.color = "black";
closeButton.style.borderRadius = "0.5rem 0 0 0.5rem";
closeButton.style.zIndex = 1001;
window.hnIframeHiddenManually = false;
closeButton.addEventListener("click", () => {
if (window.hnIframeShown) {
window.hnIframeHiddenManually = true;
window.hideHNComments();
} else {
window.hnIframeHiddenManually = false;
window.showHNComments();
}
});
window.hideHNComments = () => {
iframe.style.right = "-30%";
closeButton.innerHTML = "◂";
document.getElementById("hn-iframe-placeholder").style.display = "none";
const bodyContainer = document.getElementById("hn-body-container")
bodyContainer.style.maxWidth = "100%";
bodyContainer.style.width = "100%";
bodyContainer.style.flex = 1;
window.hnIframeShown = false;
}
window.showHNComments = () => {
iframe.style.right = "0";
closeButton.innerHTML = "▸";
document.getElementById("hn-iframe-placeholder").style.display = "block";
const bodyContainer = document.getElementById("hn-body-container")
bodyContainer.style.maxWidth = "70%";
bodyContainer.style.width = `calc(70% - ${bodyStyle.padding || 0})`;
bodyContainer.style.flex = 0.7;
window.hnIframeShown = true;
}
// Create a flex container to hold the website contents and the iframe
const flexContainer = document.createElement("div");
flexContainer.id = "hn-flex-container";
flexContainer.style.display = "flex";
// Container for holding the body contents
const bodyContainer = document.createElement("div");
bodyContainer.id = "hn-body-container";
bodyContainer.style.flexGrow = 0.7;
bodyContainer.style.width = `calc(70% - ${bodyStyle.padding || 0})`;
bodyContainer.style.minWidth = "50%";
bodyContainer.style.maxWidth = "70%";
bodyContainer.style.margin = bodyStyle.margin;
bodyContainer.style.padding = bodyStyle.padding;
bodyContainer.innerHTML = document.body.innerHTML;
flexContainer.innerHTML = bodyContainer.outerHTML;
// Create a placeholder for the iframe that will be 30% of the flex container
// to push body contents to the left of the sidebar
const iframePlaceholder = document.createElement("div");
iframePlaceholder.id = "hn-iframe-placeholder";
iframePlaceholder.style.width = "30%";
iframePlaceholder.style.minWidth = "30%";
iframePlaceholder.style.maxWidth = "30%";
iframePlaceholder.style.height = "100vh";
iframePlaceholder.style.flex = 0.3;
iframePlaceholder.style.backgroundColor = "hsla(60, 25%, 95%, 1.00)";
flexContainer.appendChild(iframePlaceholder);
document.body.innerHTML = flexContainer.outerHTML;
document.body.appendChild(iframe);
document.body.appendChild(closeButton);
document.body.style.margin = 0;
document.body.style.padding = 0;
document.body.style.width = "100%"
document.body.style.minWidth = "100%"
document.body.style.maxWidth = "100%"
// Show/hide the iframe based on the width of the page
function toggleIframe() {
if (window.innerWidth < 1024) {
window.hideHNComments();
} else if (!window.hnIframeHiddenManually) {
window.showHNComments();
}
}
// Call toggleIframe on page load and on window resize
window.addEventListener("load", toggleIframe);
window.addEventListener("resize", toggleIframe);
toggleIframe();
}
if (location.hostname == "news.ycombinator.com") {
// if we're on HN, add the item ID to the URL as a hash fragment
window.hnObserver = new MutationObserver(() => {
const hnItems = document.querySelectorAll(".hn-item");
hnItems.forEach((item) => {
const link = item.querySelector("a.hn-item-title");
if (!link.href.includes("news.ycombinator.com")) {
link.href = link.href.replace(/#hnid=\d+/, "") + `#hnid=${item.id}`;
}
});
});
window.hnObserver.observe(document.body, {
childList: true,
subtree: true,
});
} else {
// otherwise, check if we got here from HN and add the comments sidebar
const hnidMatch = location.hash.match(/hnid=(\d+)/);
if (hnidMatch) {
window.addHNComments(hnidMatch[1]);
}
}
})();