Youtube polymer engine fixes

Some fixes for Youtube polymer engine

目前為 2020-11-08 提交的版本,檢視 最新版本

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你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

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// ==UserScript==
// @name         Youtube polymer engine fixes
// @description  Some fixes for Youtube polymer engine
// @namespace    bo.gd.an[at]rambler.ru
// @version      2.0.0
// @match        https://www.youtube.com/*
// @compatible   firefox 56
// @author       Bogudan
// @grant        none
// @run-at       document-start
// ==/UserScript==

//debug helper:
//window.YTFixes = {};
(function() {
    'use strict';
	if (window.YTEngine2) return;	// in-development kill-switch
	if (document.location.pathname == '/error')	// there is nothing to do on error page
		return;
	// test local storage availability (required for settings saving) and load settings
	let settings = {}, ls;
	try {
		function lsTest (st, v) {
			st.setItem ('__fix_test__', v);
			return st.getItem ('__fix_test__') == v;
			};
		let _s = window.localStorage;
		if (lsTest (_s, 'qwe') && lsTest (_s, 'rty')) { // do 2 times just in case LS stored value once, but does not let change it later
			ls = _s;
			settings = JSON.parse (ls.getItem ('__fix__settings__')) || {};
			}
		}
	catch (e) { }
	// delete old settings
	if ("default_player_640" in settings) {
		settings.default_player = settings.default_player_640 ? 3 : 0;
		delete settings.default_player_640;
		}
	if ("reduce_thumbnail" in settings) {
		settings.thumbnail_size = settings.reduce_thumbnail ? 2 : 0;
		delete settings.reduce_thumbnail;
		}
	// set default values
	if (!("align_player" in settings))
		settings.align_player = 0;
	if (!("default_player" in settings))
		settings.default_player = 0;
	if (!("hide_guide" in settings))
		settings.hide_guide = true;
	if (!("hide_yt_suggested_blocks" in settings))
		settings.hide_yt_suggested_blocks = true;
	if (!("logo_target" in settings))
		settings.logo_target = "";
	if (!("reduce_font" in settings))
		settings.reduce_font = true;
	if (!("theater_player" in settings))
		settings.theater_player = 0;
	if (!("thumbnail_size" in settings))
		settings.thumbnail_size = 2;
	if (!("thumbnail_size_m" in settings))
		settings.thumbnail_size_m = 720;
	if (!("unfix_header" in settings))
		settings.unfix_header = true;
	if (!("search_thumbnail" in settings))
		settings.search_thumbnail = 0;
	if (!("clear_search" in settings))
		settings.clear_search = false;
	if (!("channel_top" in settings))
		settings.channel_top = 0;
	console.log ('fix settings:', settings);
	// catch "settings" page
	if (document.location.pathname == '/fix-settings') {
		document.title = "YouTube Polymer Fixes: Settings";
		let back = document.createElement ('div');
		back.className = 'ytfixback';
		let plane = document.createElement ('div'), e1, e2;
		plane.className = 'ytfix';
		let style = document.createElement ('style');
		style.type = 'text/css';
		style.innerHTML = [
			'.ytfix{position:absolute;left:0;top:0;right:0;background:#eee;padding:3em}',
			'.ytfix_line{margin:1em}',
			'.ytfix_line span,.ytfix_line input,.ytfix_line select{margin-right:1em}',
			'.ytfix_field{padding:0.2em;border:1px solid #888}',
			'.ytfix_button{padding:0.4em;border:1px solid #888}',
			'.ytfix_hide{display:none}',
			'.ytfixback{position:absolute;left:0;top:0;right:0;height:100%;background:#eee}'
			].join ('');
		plane.appendChild (style);
		function AddLine () {
			let q = document.createElement ('div');
			q.className = 'ytfix_line';
			for (let i = 0, L = arguments.length; i < L; ++i)
				q.appendChild (arguments [i]);
			plane.appendChild (q);
			return q;
			}
		e1 = document.createElement ('b');
		e1.appendChild (document.createTextNode ('YouTube Polymer Fixes: Settings'));
		AddLine (e1);
		if (!ls) {
			e1 = document.createElement ('span');
			e1.style = 'color:red';
			e1.appendChild (document.createTextNode ('Cannot edit settings: no access to local storage.'));
			AddLine (e1);
			e1 = document.createElement ('span');
			e1.appendChild (document.createTextNode ('If you are using Firefox, allow cookies for this site.'));
			AddLine (e1);
			}
		else {
			let ess = {};
			function MakeDesc (desc) {
				let e = document.createElement ('span');
				e.appendChild (document.createTextNode (desc));
				return e;
				}
			function MakeBoolElement (nm) {
				let e = document.createElement ('input');
				e.type = 'checkbox';
				e.checked = settings [nm];
				ess [nm] = e;
				return e;
				}
			function MakeListElement (nm, opts) {
				let e = document.createElement ('select');
				e.className = 'ytfix_field';
				ess [nm] = e;
				for (let i = 0, L = opts.length; i < L; ++i) {
					let o = document.createElement ('option');
					o.appendChild (document.createTextNode (opts [i]));
					//if (i == val)
					//	o.setAttribute ('selected', '');
					e.appendChild (o);
					}
				e.selectedIndex = settings [nm];
				return e;
				}
			function MakeTextElement (nm) {
				let e = document.createElement ('input');
				e.className = 'ytfix_field';
				e.value = settings [nm];
				ess [nm] = e;
				return e;
				}
			AddLine (MakeBoolElement ("hide_guide"), MakeDesc ('Hide "Guide" menu when page opens'));
			AddLine (MakeBoolElement ("reduce_font"), MakeDesc ("Reduce font size in video descriptions"));
			let tsm = MakeTextElement ("thumbnail_size_m");
			tsm.className = settings.thumbnail_size == 5 ? 'ytfix_field' : 'ytfix_hide';
			let tsi = MakeListElement ("thumbnail_size", ['default', '180px', '240px', '360px', '480px', 'manual']);
			tsi.addEventListener ('change', function () {
				ess.thumbnail_size_m.className = ess.thumbnail_size.selectedIndex == 5 ? 'ytfix_field' : 'ytfix_hide';
				});
			AddLine (MakeDesc ('Set thumbnails width for front page'), tsi, tsm);
			AddLine (MakeDesc ('Set thumbnails width for search page'), MakeListElement ("search_thumbnail", ['default', '240px', '360px']));
			AddLine (MakeDesc ("Set player size in default mode"), MakeListElement ("default_player", ['default', '256x144px', '426x240px', '640x360px', '853x480px', '1280x720px']));
			AddLine (MakeDesc ("Set player size in theater mode"), MakeListElement ("theater_player", ['default', '256x144px', '426x240px', '640x360px', '853x480px', '1280x720px']));
			AddLine (MakeBoolElement ("hide_yt_suggested_blocks"), MakeDesc ('Hide suggestions blocks on main page (recommended playlists, latest posts, etc.)'));
			AddLine (MakeBoolElement ("clear_search"), MakeDesc ("Hide suggestions blocks in search (for you, people also watched, etc.)"));
			AddLine (MakeBoolElement ("unfix_header"), MakeDesc ("Unstick header bar from top of the screen"));
			AddLine (MakeDesc ("Align resized player into it's container (normal and theater modes)"), MakeListElement ("align_player", ['center', 'left', 'right']));
			AddLine (MakeDesc ("Modify channels' pages behaviour"), MakeListElement ('channel_top', ['default', 'hide banner with scrolling', 'hide banner on load']));
			AddLine (MakeDesc ("Change YT logo target to https://www.youtube.com/..."), MakeTextElement ("logo_target"));
			e1 = document.createElement ('input');
			e1.type = 'button';
			e1.className = 'ytfix_button';
			e1.value = 'Save settings and return to YouTube';
			e1.addEventListener ('click', function () {
				settings.hide_guide = ess.hide_guide.checked;
				settings.reduce_font = ess.reduce_font.checked;
				settings.thumbnail_size = ess.thumbnail_size.selectedIndex;
				if (settings.thumbnail_size == 5) {
					let v = ess.thumbnail_size_m.value;
					if (!/^\d+$/.test (v)) {
						alert ('Error: invalid value for thumbnails size');
						return;
						}
					settings.thumbnail_size_m = parseInt (v);
					}
				settings.search_thumbnail = ess.search_thumbnail.selectedIndex;
				settings.default_player = ess.default_player.selectedIndex;
				settings.theater_player = ess.theater_player.selectedIndex;
				settings.hide_yt_suggested_blocks = ess.hide_yt_suggested_blocks.checked;
				settings.unfix_header = ess.unfix_header.checked;
				settings.align_player = ess.align_player.selectedIndex;
				settings.channel_top = ess.channel_top.selectedIndex;
				settings.logo_target = ess.logo_target.value;
				settings.clear_search = ess.clear_search.checked;
				ls.setItem ('__fix__settings__', JSON.stringify (settings));
				alert ('Settings saved');
				history.back ();
				});
			e2 = document.createElement ('input');
			e2.type = 'button';
			e2.className = 'ytfix_button';
			e2.value = 'Return to YouTube without saving';
			e2.addEventListener ('click', function () {
				history.back ();
				});
			AddLine (e1, e2);
			}
		let int = setInterval (function () {
			if (!document.body)
				return;
			document.body.appendChild (back);
			document.body.appendChild (plane);
			clearInterval (int);
			}, 1);
		}
	// apply settings
	let styles = [], intervals = [];
	function addInterval (period, func, params) {
		if (!period)
			period = 1;
		intervals.push ({ cnt: period, period: period, call: func, params: params || [] });
	    }
	if (settings.hide_guide)
		addInterval (1, function (info) {
			if (info.act == 0) {	// observe location change
				let url = document.location.toString ();
				if (url != info.url)
					info.act = 1;
				}
			if (info.act == 1) {	// wait for sorp page load completion
				let Q = document.getElementsByTagName ('yt-page-navigation-progress');
				if (!Q.length)
					return;
				if (Q [0].hasAttribute ('hidden'))
					info.act = 2;
				}
			if (info.act == 2) {	// wait for button and press it if necessary
				let guide_button = document.getElementById ('guide-button');
				if (!guide_button)
					return;
				let tmp = guide_button.getElementsByTagName ('button');
				if (!tmp.length)
					return;
				info.url = document.location.toString ();
				info.act = 0;
				tmp = tmp [0].attributes;
				if (tmp && tmp ['aria-pressed'].value == 'true')
					guide_button.click ();
				}
			}, [{ act: 2 }]);
		// old engine:
		//if (document.getElementById ('appbar-guide-button'))
		//	document.documentElement.classList.remove ('show-guide');
	if (settings.reduce_font) {
		styles.push ('#video-title.ytd-rich-grid-video-renderer,#text.ytd-channel-name,#metadata-line.ytd-video-meta-block{font-size:14px!important;line-height:1.2em!important}');
		// fix: "not interested" placeholder bigger than original element by about 40%
		styles.push ('paper-button.style-blue-text{padding:0!important}');
		}
	if (settings.thumbnail_size)
		styles.push ('ytd-rich-item-renderer{width:' + [0, 180, 240, 360, 480, settings.thumbnail_size_m] [settings.thumbnail_size] + 'px!important}');
	if (settings.hide_yt_suggested_blocks)
		styles.push ('div#contents.ytd-rich-grid-renderer ytd-rich-section-renderer{display:none!important}');
	if (settings.unfix_header) {
		styles.push ('div#masthead-container.ytd-app,ytd-mini-guide-renderer.ytd-app,app-drawer#guide{position:absolute!important}');
		styles.push ('ytd-feed-filter-chip-bar-renderer{position:relative!important}');
		styles.push ('div#chips-wrapper{position:absolute!important;top:0!important}');
		}
	if (settings.search_thumbnail) {
		let sz = [0, 240, 360] [settings.search_thumbnail] + 'px!important';
		// min-width defaults to 240px, max-width defaults to 360px
		// sizes for: videos, playlists, channels, mixes
		styles.push ('ytd-video-renderer[use-prominent-thumbs] ytd-thumbnail.ytd-video-renderer,ytd-playlist-renderer[use-prominent-thumbs] ytd-playlist-thumbnail.ytd-playlist-renderer,ytd-channel-renderer[use-prominent-thumbs] #avatar-section.ytd-channel-renderer,ytd-radio-renderer[use-prominent-thumbs] ytd-thumbnail.ytd-radio-renderer{min-width:' + sz + ';max-width:' + sz + '}');
		}
	if (settings.clear_search)
		styles.push ('ytd-two-column-search-results-renderer ytd-shelf-renderer.style-scope.ytd-item-section-renderer,ytd-two-column-search-results-renderer ytd-horizontal-card-list-renderer.style-scope.ytd-item-section-renderer{display:none!important}');
	styles.push ([
		'#player-theater-container{margin-left:auto!important;margin-right:auto!important}',
		'#player-container-outer{margin-left:0!important}',
		'#player-container-outer{margin-right:0!important}#player-theater-container{margin-left:auto!important}',
		] [settings.align_player]);
	const sizes = [undefined, { w: 256, h: 244 }, { w: 427, h: 240 }, { w: 640, h: 360 }, { w: 854, h: 480 }, { w: 1280, h: 720 }];
	let size_norm = sizes [settings.default_player];
	if (size_norm)
		styles.push ('#player-container-outer{min-width:' + size_norm.w + 'px!important;max-width:' + size_norm.w + 'px!important}');
	let size_theater = sizes [settings.theater_player];
	if (size_theater)
		styles.push ('ytd-watch-flexy:not([fullscreen]) #player-theater-container{min-width:' + size_theater.w + 'px!important;max-width:' + size_theater.w + 'px!important;max-height:' + size_theater.h + 'px!important}');
	if (size_norm || size_theater)
		addInterval (1, function (sn, st) {
			let eq = document.getElementsByTagName ("ytd-watch-flexy");
			if (!eq.length)
				return;
			let s = eq [0].hasAttribute ('theater') ? st : sn;
			if (!s)
				return;
			let ep = document.getElementById ("movie_player");
			if (ep && ep.setInternalSize && ep.isFullscreen && ep.getPlayerSize && !ep.isFullscreen () && ep.getPlayerSize ().width != s [0])
				ep.setInternalSize (s [0], s [1]);
		    }, [size_norm, size_theater]);
	if (settings.logo_target) {
		let X = settings.logo_target;
		if (X [0] != '/')
			X = '/' + X;
		X = document.location.origin + X;
		addInterval (1, function (url) {
			let l = document.querySelectorAll ('a#logo');
			for (let i = l.length; --i >= 0; ) {
				let Q = l [i];
				let D = Q.data;
				if (D && D.commandMetadata && Q.href != url) {
					Q.href = url;
					D.commandMetadata.webCommandMetadata.url = url;
				    }
				}
		    }, [X]);
		}
	if (settings.channel_top)
		styles.push ('app-header#header.style-scope.ytd-c4-tabbed-header-renderer{transform:none!important;position:absolute;left:0px!important;top:0px;margin-top:0px}');
	if (settings.channel_top > 1) {
		styles.push ('div#contentContainer.style-scope.app-header-layout{padding-top:148px!important}');
		styles.push ('div#contentContainer.style-scope.app-header{height:148px!important}');
		styles.push ('div.banner-visible-area.style-scope.ytd-c4-tabbed-header-renderer{display:none!important}');
		}
	// "settings" button
	// can't store created button: Polymer overrides it's content on soft reload leaving tags in place
	// but can store element that Polymer does not know how to deal with and just drops
	let settingsButtonMark;
	function createSettingsButton () {
		if (settingsButtonMark && settingsButtonMark.parentNode)
			return;
		let toolBar = document.getElementsByTagName ('ytd-topbar-menu-button-renderer');
		let _1st = toolBar [0];
		if (!_1st)
			return;
		toolBar = _1st.parentNode;
		let sb = document.createElement ('ytd-topbar-menu-button-renderer');
		sb.className = 'style-scope ytd-masthead style-default';
		sb.setAttribute ('use-keyboard-focused', '');
		sb.setAttribute ('is-icon-button', '');
		sb.setAttribute ('has-no-text', '');
		toolBar.insertBefore (sb, toolBar.childNodes [0]);
		let mark = document.createElement ('fix-settings-mark');
		mark.style = 'display:none';
		toolBar.insertBefore (mark, sb); // must be added to parent node of buttons in order to Polymer dropped it on soft reload
		let icb = document.createElement ('yt-icon-button');
		icb.id = 'button';
		icb.className = 'style-scope ytd-topbar-menu-button-renderer style-default';
		let aa = document.createElement ('a');
		aa.className = 'yt-simple-endpoint style-scope ytd-topbar-menu-button-renderer';
		aa.setAttribute ('tabindex', '-1');
		aa.href = '/fix-settings';
		aa.appendChild (icb);
		sb.getElementsByTagName ('div') [0].appendChild (aa); // created by YT scripts
		let bb = icb.getElementsByTagName ('button') [0]; // created by YT scripts
		bb.setAttribute ('aria-label', 'fixes settings');
		let ic = document.createElement ('yt-icon');
		ic.className = 'style-scope ytd-topbar-menu-button-renderer';
		bb.appendChild (ic);
		let gpath = document.createElementNS ('http://www.w3.org/2000/svg', 'path');
		gpath.className.baseVal = 'style-scope yt-icon';
		gpath.setAttribute ('d', 'M1 20l6-6h2l11-11v-1l2-1 1 1-1 2h-1l-11 11v2l-6 6h-1l-2-2zM13 15l2-2 8 8v1l-1 1h-1zM9 11l2-2-2-2 1.5-3-3-3h-2l3 3-1.5 3-3 1.5-3-3v2l3 3 3-1.5z');
		let svgg = document.createElementNS ('http://www.w3.org/2000/svg', 'g');
		svgg.className.baseVal = 'style-scope yt-icon';
		svgg.appendChild (gpath);
		let svg = document.createElementNS ('http://www.w3.org/2000/svg', 'svg');
		svg.className.baseVal = 'style-scope yt-icon';
		svg.setAttributeNS (null, 'viewBox', '0 0 24 24');
		svg.setAttributeNS (null, 'preserveAspectRatio', 'xMidYMid meet');
		svg.setAttribute ('focusable', 'false');
		svg.setAttribute ('style', 'pointer-events: none; display: block; width: 100%; height: 100%;');
		svg.appendChild (svgg);
		ic.appendChild (svg); // YT clears *ic
		settingsButtonMark = mark;
		}
    addInterval (1, createSettingsButton, []);
	// styles
	function AddStyles () {
		if (styles.length == 0)
			return;
		if (!document.head)
			return setTimeout (AddStyles, 1);
	    let style_element = document.createElement ('style');
	    style_element.type = 'text/css';
	    style_element.innerHTML = styles.join ('');
		document.head.appendChild (style_element);
		}
	AddStyles ();
	// intervals
	setInterval (function () {
		for (let i = intervals.length; --i >= 0; ) {
			let Q = intervals [i];
			if (--Q.cnt > 0)
				continue;
			Q.call.apply (this, Q.params);
			Q.cnt = Q.period;
			}
		}, 1000);
	console.log ('Fixed loaded');
	}) ();