REDDIT: Comment Navigation Button

Navigate between parent comments on Reddit

Aby zainstalować ten skrypt, wymagana jest instalacje jednego z następujących rozszerzeń: Tampermonkey, Greasemonkey lub Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

Aby zainstalować ten skrypt, wymagana jest instalacje jednego z następujących rozszerzeń: Tampermonkey, Violentmonkey.

Aby zainstalować ten skrypt, wymagana będzie instalacja rozszerzenia Tampermonkey lub Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

Aby zainstalować ten skrypt, musisz zainstalować rozszerzenie menedżera skryptów użytkownika.

(Mam już menedżera skryptów użytkownika, pozwól mi to zainstalować!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

Będziesz musiał zainstalować rozszerzenie menedżera stylów użytkownika, aby zainstalować ten styl.

Będziesz musiał zainstalować rozszerzenie menedżera stylów użytkownika, aby zainstalować ten styl.

Musisz zainstalować rozszerzenie menedżera stylów użytkownika, aby zainstalować ten styl.

(Mam już menedżera stylów użytkownika, pozwól mi to zainstalować!)

// ==UserScript==
// @name         REDDIT: Comment Navigation Button
// @namespace    https://github.com/KenKaneki73985/Reddit-Comment-Navigation
// @version      1.1.1
// @license      MIT
// @description  Navigate between parent comments on Reddit
// @author       Ken Kaneki 
// @match        https://www.reddit.com/*
// @grant        none
// ==/UserScript==

// user_script = "moz-extension://762e4395-b145-4620-8dd9-31bf09e052de/options.html#nav=456d07d2-2ca3-4a29-bd4d-3d3b7726255f+editor"
// https://greasyfork.org/en/scripts/505012-reddit-comment-navigation

// GUIDES:
// next_btn.textContent = 'next'

(function() {
    'use strict'
    let current_index = -1
    let PARENT_COMMENTS_arr = []

    function FIND_PARENT_COMMENTS() {
        PARENT_COMMENTS_arr = []
        const comments = document.querySelectorAll('shreddit-comment[depth="0"')
        comments.forEach(comment => PARENT_COMMENTS_arr.push(comment))
    }

    function NEXT_PARENT_COMMENT() {
        FIND_PARENT_COMMENTS() // refresh new comments

        if (PARENT_COMMENTS_arr.length  > current_index + 1) {  // 5 (len) - 1 > 4 (index) ? 4 > 4 = false
            current_index++
            PARENT_COMMENTS_arr[current_index].scrollIntoView()
            HIGHLIGHT_COMMENT(PARENT_COMMENTS_arr[current_index])
            ADJUST_POSITION()
        }
    }

    function PREV_PARENT_COMMENT() {
        FIND_PARENT_COMMENTS() // refresh new comments

        if (current_index > 0) {
            current_index--
            PARENT_COMMENTS_arr[current_index].scrollIntoView()
            HIGHLIGHT_COMMENT(PARENT_COMMENTS_arr[current_index])
            ADJUST_POSITION()
        }
    }

    function ADJUST_POSITION() {
        window.scrollBy(0, -70); // Scroll up by 100 pixels
    }

    function HIGHLIGHT_COMMENT(active_comment) {

        PARENT_COMMENTS_arr.forEach(comment => comment.style.border = "none") // Remove highlight from all comments
        active_comment.style.border = '1px solid gray' // Highlight the current comment
    }

    // ---------------------- PREVIOUS BUTTON ----------------------
    const prev_btn = document.createElement('button')
    prev_btn.innerHTML = '<svg viewBox="0 0 24 24" width="24" height="24"><path fill="#808080" d="M7.41 15.41L12 10.83l4.59 4.58L18 14l-6-6-6 6z"/></svg>'
    prev_btn.style.position = 'fixed'
    prev_btn.style.right = '20px'
    prev_btn.style.top = '83%'
    prev_btn.addEventListener('click', PREV_PARENT_COMMENT)

    // ---------------------- NEXT BUTTON  ----------------------
    const next_btn = document.createElement('button')
    next_btn.innerHTML = '<svg viewBox="0 0 24 24" width="24" height="24"><path fill="#808080" d="M7.41 8.59L12 13.17l4.59-4.58L18 10l-6 6-6-6 1.41-1.41z"/></svg>'
    next_btn.style.position = 'fixed'
    next_btn.style.right = '20px'
    next_btn.style.top = '90%'
    next_btn.addEventListener('click', NEXT_PARENT_COMMENT)

    document.body.appendChild(prev_btn)
    document.body.appendChild(next_btn)

    window.addEventListener('load', () => {current_index = -1})
    window.addEventListener('load', FIND_PARENT_COMMENTS)
    // window.addEventListener('scroll', FIND_PARENT_COMMENTS);
})()