Youtube Gray-Out

Overlay thumbnails of already watched videos with white layer and view counter. Aims to counteract Youtube's clickbait design.

目前为 2016-08-08 提交的版本。查看最新版本。

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Wrap lines

// ==UserScript==
// @name         Youtube Gray-Out
// @namespace    http://do20c2oidj11xsy0ujgb2.com
// @version      0.2
// @description  Overlay thumbnails of already watched videos with white layer and view counter. Aims to counteract Youtube's clickbait design.
// @author       BakaChan777
// @run-at       document-end
// @match        https://*.youtube.com/*
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_log
// ==/UserScript==

(function( A, B, C, D, E, F, X, T ){
    'use strict';

    A = GM_getValue('YoutubeSeenVideos', {});

    E = document.createElement('div');
    E.style.width = '100%';
    E.style.height = '100%';
    E.style.position = 'absolute';
    E.style.backgroundColor = 'white';
    E.style.opacity = 0.8;
    E.style.top = '0px';
    E.style.lineHeight = '100%';
    E.style.fontSize = '50px';
    E.style.display = 'flex';
    E.style.alignItems = 'center';
    E.style.justifyContent = 'center';
    E.className = 'yt-gray-out';

    function check(){
        window.location.href==X || evaluate();
        fix_thumbnails(); setTimeout(fix_thumbnails,3000);
    }

    function fix_thumbnails(){
        D = Object.getOwnPropertyNames(A);

        C = document.getElementsByTagName('img');

        for(var x=0; x<C.length; x++){
            for(var y=0; y<D.length; y++) if(C[x].src.indexOf(D[y])!=-1){
                if(is_fixed(C[x])) break;
                F = C[x].parentNode.appendChild(E.cloneNode());
                F.innerHTML = A[D[y]]; break;
            }
        }
    }

    function is_fixed(e){
        for(var x=0, y=e.parentNode.children; x<y.length; x++)
            if(y[x].className=='yt-gray-out') return true;
        return false;
    }

    function is_video_page(){
        return window.location.href.indexOf('watch') != -1;
    }

    function update_video_list(){
        B=/v=([a-zA-Z0-9-]+)/g.exec(window.location.href)[1];
        A[B]===undefined && (A[B]=0); A[B]++;
    }

    function evaluate() {

        X = window.location.href;

        is_video_page() && update_video_list();
        GM_setValue('YoutubeSeenVideos', A);
    }

    //window.addEventListener("spfdone", check);
    //check();

    T = new MutationObserver(check);
    T.observe(document.getElementById('page'),{attributes:false, childList:true, subtree:true}); check();
})();

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