Better Comments for Drive PDF Viewer

Hides every comment in 'comments column' which has no text inside. Makes comments with text inside simpler by hiding author and other data.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

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.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Better Comments for Drive PDF Viewer
// @namespace    http://tampermonkey.net/
// @version      0.14
// @description  Hides every comment in 'comments column' which has no text inside. Makes comments with text inside simpler by hiding author and other data.
// @author       Balint Sotanyi
// @match        https://drive.google.com/file/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    document.body.onload = function() {
        var style = document.createElement('style'), parent_found = false, comments;
        style.innerText = 'div { transition: opacity .8s; }';
        document.head.appendChild(style);
        var check_interval = setInterval(function() {
            var comment_collection = document.getElementsByClassName('dcs-a-dcs-bd dcs-a dcs-a-dcs-u-dcs-v dcs-a-dcs-u-dcs-v-dcs-pf dcs-a-dcs-u-dcs-v-dcs-w-dcs-pf dcs-a-dcs-lg-dcs-ah dcs-a-dcs-lg-dcs-mg');
            if (comment_collection !== undefined && comment_collection[0] !== undefined) {
                comments = [].slice.call(comment_collection[0].children);
                if (comments !== undefined && comments.length > 0) {
                    clearInterval(check_interval);
                    comments.forEach(function(c){
                        try {
                            var b1 = c.firstElementChild.innerText == "",
                                b2 = c.firstElementChild.firstElementChild.firstElementChild.firstElementChild.children[1].innerText == "";
                        } catch (e) { /* omegalul */ }
                        if (b1 || b2) {
                            c.style.opacity = '0';
                            c.style.cursor = 'default';
                        } else {
                            var parent = c.firstElementChild.firstElementChild.firstElementChild.firstElementChild;
                            parent.innerHTML = parent.children[1].innerText;
                            c.click();
                        }
                    });
                }
            }
        }, 1000);
    }
})();