add loop button for youtube
当前为
// ==UserScript==
// @name loopButtonYT
// @namespace https://github.com/Makhloufbel
// @homepage https://github.com/Makhloufbel
// @version 0.2
// @description add loop button for youtube
// @author Makhloufbel
// @match https://www.youtube.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant none
// @license GPL-3.0-or-later
// ==/UserScript==
(function() {
'use strict';
const css = `
button.mack::before,
button.mack::after {
--scale: 0;
position: absolute;
top: -.5rem;
/*left: 73.5%;*/
transform: translateX(-15%) translateY(-100%) scale(var(--scale));
transition: 50ms transform;
transform-origin: bottom center;
}
button.mack::after {
z-index: 4999;
top: -20%;
content: '';
width: 46px;
height: 25px;
background-color:rgba(0, 0, 0, 0.9);;
border-radius: .2rem;
padding: 0 .5rem;
}
button.mack::before {
z-index: 5000;
top: 3%;
content: attr(data-title);
font-size: inherit;
font-weight: bold;
width: max-content;
border-radius: .2rem;
padding: 0 .5rem;
background: none !important;
text-align: center;
}
button.mack:hover::before,
button.mack:hover::after {
--scale: 1
}
`
document.head.insertAdjacentHTML('beforeend', '<style>'+css+'</style>');
const STATE = {
IDLE: 0,
ACTIVE: 1
}
const SELECTOR = {
UNIQUENESS_CUE: 'title',
BUTTON_RACK: 'div.ytp-chrome-controls > div.ytp-left-controls',
VIDEO: 'video.html5-main-video',
PLAY_BUTTON: 'div.ytp-autonav-toggle-button-container'
//PLAY_BUTTON: 'button.ytp-play-button'
}
const LOOP_BUTTON_CLASSNAMES = ['ytp-loop-button', 'ytp-button', 'mack']
const iconPrototype =
'<?xml version="1.0" encoding="UTF-8"?><svg class="style-scope yt-icon" display="block" '
+'pointer-events="none" style="height:28px;width:28px;padding-bottom:10px;padding-left:5px;"'
+'focusable="false" viewBox="0 0 24 24" mlns="http://www.w3.org/2000/svg"><g class="style-scope'
+' yt-icon"><path class="style-scope yt-icon" stroke = "rgb(208, 208, 208)" stroke-opacity="0.4"'
+' fill = "rgb(208, 208, 208)" fill-opacity="0.4" id = "svg_makhlouf" d="M21,13h1v5L3.93,18.03l2.'
+'62,2.62l-0.71,0.71L1.99,17.5l3.85-3.85l0.71,0.71l-2.67,2.67L21,17V13z M3,7l17.12-0.03 l-2.67,2.67l0'
+'.71,0.71l3.85-3.85l-3.85-3.85l-0.71,0.71l2.62,2.62L2,6v5h1V7z"/></g></svg>';
const stylePrototype ='';
/* ' button.mack[data-title]:hover:after{opacity:1;transition:all .1s ease .5s;visibility:visible}'
+'button.mack[data-title]:after{content:attr(data-title);position:absolute;bottom:10px;'
+'left:0;z-index:99999;visibility:hidden;white-space:nowrap;'
+'background-color:#000;color:#fff;font-size:80%;padding:5px 5px;opacity:0;border:1px solid #fff;'
+'border-radius:5px}button.mack[data-title]{position:relative} ';*/
class LoopButton {
constructor() {
// set initial state
this.state = STATE.IDLE
this.URI = ''
// query all needed DOM
this.DOMObj = {
'head': document.querySelector(SELECTOR.UNIQUENESS_CUE),
'buttonRack': null,
'playButton': null,
'video': null
}
// add observer to uniqueness cue
let observer = new MutationObserver((mutations) => {
this.pageChangeHandler()
})
observer.observe(this.DOMObj.head, {
attributes: true,
childList: true,
characterData: true
})
}
pageChangeHandler() {
// get current uri
let currentURI = window.location.href
//console.log('page changed!', currentURI);
// check changes of URI
if (this.URI == currentURI) return;
this.URI = currentURI
// check if on watch page
if (!/(^https?:\/\/)?(www\.)?youtube.com\/watch.+/.test(currentURI)) return // do nothing if not on watch page
// set to idle at first
if (this.DOMObj.loopButton) {
this.setState(STATE.IDLE)
} else {
// query all needed DOM
this.DOMObj.buttonRack = document.querySelector(SELECTOR.BUTTON_RACK)
this.DOMObj.playButton = document.querySelector(SELECTOR.PLAY_BUTTON)
this.DOMObj.video = document.querySelector(SELECTOR.VIDEO)
if (this.DOMObj.buttonRack && this.DOMObj.playButton && this.DOMObj.video) {
this.placeButton()
} else {
console.error('loop-button-for-youtube : query resulted in nothing. aborting placement.');
}
}
}
placeButton() {
let loopStyle = document.createElement('style')
loopStyle.innerHTML = stylePrototype
document.head.appendChild(loopStyle)
let loopButton = document.createElement('button')
loopButton.innerHTML = iconPrototype
loopButton.classList.add(...LOOP_BUTTON_CLASSNAMES)
loopButton.setAttribute("data-title", "Loop (p)");
const list = document.querySelector("div.ytp-chrome-controls > div.ytp-right-controls")
list.insertBefore(loopButton, list.children[3])
loopButton.addEventListener('click', this.buttonClickHandler.bind(this))
var keyLoop = 80;
window.onkeydown= function(e){if(e.keyCode === keyLoop){loopButton.click()};
};
this.DOMObj.loopButton = loopButton
}
buttonClickHandler(event) {
// toggles
switch (this.state) {
case STATE.ACTIVE:
this.setState(STATE.IDLE)
break
case STATE.IDLE:
this.setState(STATE.ACTIVE)
break
}
}
// helpers
setState(state) {
switch (state) {
case STATE.ACTIVE:
this.state = STATE.ACTIVE
document.getElementById("svg_makhlouf").setAttribute("stroke-opacity", "1")
document.getElementById("svg_makhlouf").setAttribute("fill-opacity", "1")
this.DOMObj.video.loop = true
break
case STATE.IDLE:
this.state = STATE.IDLE
document.getElementById("svg_makhlouf").setAttribute("stroke-opacity", "0.4")
document.getElementById("svg_makhlouf").setAttribute("fill-opacity", "0.4")
this.DOMObj.video.loop = false
break
}
}
}
let loopButton = new LoopButton()
})();