Sticks the first line of all comments in the visible comment tree to the top of the screen so you always know where exactly you are. See the screenshots for a better understanding.
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// ==UserScript==
// @name Hacker News Contextual Comments (sticky tree)
// @version 0.1
// @description Sticks the first line of all comments in the visible comment tree to the top of the screen so you always know where exactly you are. See the screenshots for a better understanding.
// @author phil294
// @match https://news.ycombinator.com/item?id=*
// @icon https://www.google.com/s2/favicons?domain=ycombinator.com
// @grant GM_addStyle
// @namespace https://greatest.deepsurf.us/users/779094
// ==/UserScript==
GM_addStyle(`
tr.comtr {
position: sticky;
display: block;
background: #f6f6ef;
min-height: 40px;
cursor: pointer;
}
tr.comtr.noshow {
display: none;
}`)
const sticky_row_height = 40
let i_zindex = 0
for(const com of document.querySelectorAll('tr.comtr')) {
const nesting_level = com.querySelector('.ind > img').width / 40
com.style.top = nesting_level * sticky_row_height
com.style.zindex = ++i_zindex
com.onclick = async () => {
com.querySelector('a.togg').click()
com.style.position = 'static'
com.scrollIntoView({block: "start", inline: "nearest", behavior: "smooth"})
com.style.position = 'sticky'
}
}