YouTube: Subscriptions Watch Later

Adds unwatched videos from your YouTube subscriptions page to the "Watch later" playlist

目前為 2017-09-17 提交的版本,檢視 最新版本

// ==UserScript==
// @name         YouTube: Subscriptions Watch Later
// @namespace    https://github.com/ackoujens
// @version      1.0
// @description  Adds unwatched videos from your YouTube subscriptions page to the "Watch later" playlist
// @author       Jens Ackou
// @grant        GM_addStyle
// @include      http://*.youtube.com/*
// @include      http://youtube.com/*
// @include      https://*.youtube.com/*
// @include      https://youtube.com/*
// @require      http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
// ==/UserScript==

// To submit bugs or submit revisions please see visit the repository at:
// https://github.com/ackoujens/youtube-subcriptions-watch-later
// You can open new issues at:
// https://github.com/ackoujens/youtube-subcriptions-watch-later/issues

// I highly recommend using the "YouTube: Hide Watched Videos" script
// created by Evguani Naverniouk. This is a flow that I use and find very useful.
// This script also helped me getting an idea of how to add a button to the YouTube AI.
// Probably the reason why I chose to make it look like the icons are part of eachother.

(function(undefined) {
    // Enable for debugging
    var __DEV__ = false;

    // Set defaults
    localStorage.YTSP = localStorage.SP || 'false';

    GM_addStyle(`
.YT-SP-BUTTON {
    background: transparent;
    border: 0;
    color: #888888;
    cursor: pointer;
    height: 40px;
    outline: 0;
    margin-right: 8px;
    padding: 0 8px;
    width: 40px;
}

.YT-SP-BUTTON svg {
    margin-top: 8px;
    height: 34px;
    width: 34px;
}

.YT-SP-BUTTON:focus,
.YT-SP-BUTTON:hover {
    color: #FFF;
}

.YT-SP-MENU {
    background: #F8F8F8;
    border: 1px solid #D3D3D3;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
    display: none;
    font-size: 12px;
    margin-top: -1px;
    padding: 10px;
    position: absolute;
    right: 0;
    text-align: center;
    top: 100%;
    white-space: normal;
    z-index: 9999;
}

.YT-SP-MENU-ON { display: block; }
.YT-SP-MENUBUTTON-ON span { transform: rotate(180deg) }
`);

    var counter = 0;
    var watchlaterIcon = '<svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" viewBox="0 0 48 48"><g fill="currentColor"><path d="M32 4h-4v-4h-4v4h-4v4h4v4h4v-4h4z"></path><path d="M26.996 13.938c0.576 0.64 1.1 1.329 1.563 2.062-1.197 1.891-2.79 3.498-4.67 4.697-2.362 1.507-5.090 2.303-7.889 2.303s-5.527-0.796-7.889-2.303c-1.88-1.199-3.473-2.805-4.67-4.697 1.197-1.891 2.79-3.498 4.67-4.697 0.122-0.078 0.246-0.154 0.371-0.228-0.311 0.854-0.482 1.776-0.482 2.737 0 4.418 3.582 8 8 8s8-3.582 8-8c0-0.022-0.001-0.043-0.001-0.065-3.415-0.879-5.947-3.957-5.998-7.635-0.657-0.074-1.325-0.113-2.001-0.113-6.979 0-13.028 4.064-16 10 2.972 5.936 9.021 10 16 10s13.027-4.064 16-10c-0.551-1.101-1.209-2.137-1.958-3.095-0.915 0.537-1.946 0.897-3.046 1.034zM13 10c1.657 0 3 1.343 3 3s-1.343 3-3 3-3-1.343-3-3 1.343-3 3-3z"></path></g></svg>';


    // ===========================================================
    // Returns a function, that, as long as it continues to be invoked, will not
    // be triggered. The function will be called after it stops being called for
    // N milliseconds. If `immediate` is passed, trigger the function on the
    // leading edge, instead of the trailing.

    var debounce = function (func, wait, immediate) {
        var timeout;
        return function() {
            var context = this, args = arguments;
            var later = function() {
                timeout = null;
                if (!immediate) func.apply(context, args);
            };
            var callNow = immediate && !timeout;
            clearTimeout(timeout);
            timeout = setTimeout(later, wait);
            if (callNow) func.apply(context, args);
        };
    };

    // ===========================================================
    // Button will be injected into the main header menu
    var findButtonTarget = function () {
        return $('#container #end #buttons');
    };

    // ===========================================================
    // Check if button is already present
    var isButtonAlreadyThere = function () {
        return $('.YT-SP-BUTTON').length > 0;
    };

    // ===========================================================
    // Add button to page
    var addButton = function () {
        if (isButtonAlreadyThere()) return;

        // Find button target
        var target = findButtonTarget();
        if (!target) return;

        // Generate button DOM
        //var icon = localStorage.SP === 'true' ? visibilityIcon : visibilityOffIcon;
        var icon = localStorage.YTSP = watchlaterIcon;
        var button = $('<button class="YT-SP-BUTTON" title="Add Videos to Watch Later">' + icon + '</button>');

        // Attach button event
        button.on("click", function () {
            $('ytd-thumbnail-overlay-toggle-button-renderer').click();
        });

        // Insert button into DOM
        target.prepend(button);
 };

    var run = debounce(function () {
        if (__DEV__) console.log('[YT-SP] Running check for subcription videos');
        addButton();
    }, 500);

    // ===========================================================

    // Hijack all XHR calls
    var send = XMLHttpRequest.prototype.send;
    XMLHttpRequest.prototype.send = function (data) {
        this.addEventListener("readystatechange", function () {
            if (
                // Anytime more videos are fetched -- re-run script
                this.responseURL.indexOf('browse_ajax?action_continuation') > 0
            ) {
                setTimeout(function () {
                    run();
                }, 0);
            }
        }, false);
        send.call(this, data);
    };

    // ===========================================================

    var observeDOM = (function() {
        var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
        var eventListenerSupported = window.addEventListener;

        return function(obj, callback) {
            if (__DEV__) console.log('[YT-SP] Attaching DOM listener');

            // Invalid `obj` given
            if (!obj) return;

            if (MutationObserver) {
                var obs = new MutationObserver(function (mutations, observer) {
                    if (mutations[0].addedNodes.length || mutations[0].removedNodes.length) {
                        callback(mutations);
                    }
                });

                obs.observe(obj, {childList: true, subtree: true});
            } else if (eventListenerSupported) {
                obj.addEventListener('DOMNodeInserted', callback, false);
                obj.addEventListener('DOMNodeRemoved', callback, false);
            }
        };
    })();

    // ===========================================================

    if (__DEV__) console.log('[YT-SP] Starting Script');

    // YouTube does navigation via history and also does a bunch
    // of AJAX video loading. In order to ensure we're always up
    // to date, we have to listen for ANY DOM change event, and
    // re-run our script.
    observeDOM(document.body, run);

    run();
})();