Creates a button container, under the video, onto which buttons can be added
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.greasyfork.org/scripts/9004/44606/YouTube%20-%20Button%20Container%20%28%40require%29.js
// ==UserScript==
// @name YouTube - Button Container (@require)
// @namespace https://greasyfork.org/en/users/10166-moriarty
// @description Creates a button container, under the video, onto which buttons can be added
// @include http://*.youtube.com/*
// @include http://youtube.com/*
// @include https://*.youtube.com/*
// @include https://youtube.com/*
// @copyright CodeFelony
// @author Moriarty
// @version 1.0.0
// @license LGPL version 3 or any later version; http://www.gnu.org/copyleft/lgpl.html
// @grant GM_addStyle
// ==/UserScript==
var addButtonToContainer = (function () {
'use strict';
var rYoutubeWhitelistedUrls = /^https?:\/\/([^\.]+\.)?youtube\.com\/(watch|user\/|channel\/)/;
var TEST_MODE = false; // if true, will replace the current style with this one
// helper functions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
function addStyle(contents) {
var head = document.head || query('html > head'),
style = document.createElement('style');
style.id = 'underMovieDivStyle';
style.type = 'text/css';
style.appendChild( document.createTextNode(contents) );
if (head) {
head.appendChild(style);
}
}
function id(name) {
return document.getElementById(name);
}
function query(name) {
return document.querySelector(name);
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
function waitForHeadReady() {
if ( document.head || query('html > head') ) {
window.setTimeout(handleStyleCreation, TEST_MODE === true ? 3000 : 0);
} else {
window.setTimeout(waitForHeadReady, 200);
}
}
function handleStyleCreation() {
var umdv = id('underMovieDivStyle'),
obs = new MutationObserver(function (mutations) {
mutations.forEach(function (mutation) {
if (mutation.target.id === 'underMovieDivStyle') {
handleStyleCreation();
}
});
});
if (TEST_MODE === true || !umdv) {
if (umdv) {
umdv.parentNode.removeChild(umdv);
}
addStyle('' +
'#under-movie-div { ' +
'background: transparent !important; ' +
'display: block; ' +
'padding-top: 4px; ' +
'padding-bottom: 8px; ' +
'text-align: left; ' +
'z-index: 999999; ' +
'}\n\n' +
'.under-movie-div-button { ' +
'background-image: linear-gradient(to top, #F6F6F6 0px, #FCFCFC 100%) !important; ' +
'border: 1px solid #CCCCCC; ' +
'border-radius: 2px; ' +
'color: #666666 !important; ' +
'font-size: 12px !important; ' +
'font-family: arial, sans-serif !important; ' +
'font-weight: 400 !important; ' +
'height: auto !important; ' +
'line-height: 20px !important; ' +
'margin-right: 6px; ' +
'padding: 2px 10px !important; ' +
'}\n\n' +
// - - - - - - - - - - - - - - - - - - -
'#watch7-headline { ' +
'padding: 4px 0 !important; ' +
'}\n\n' +
'#watch7-headline h1 { ' +
'text-align: center; ' +
'width: 100%; ' +
'}\n\n' +
'#upsell-video { ' +
'overflow: visible !important; ' + // allow the button container to show on non-video pages
'}' +
'');
// observe the style for changes if test mode enabled
if (TEST_MODE === true) {
obs.observe(id('underMovieDivStyle'), {
childList : true,
attributes : true,
characterData : true
});
}
}
}
function handleContainerCreation() {
var holder = query('#watch7-headline, #gh-overviewtab div.c4-spotlight-module-component'),
container = id('under-movie-div');
if (container == null) {
container = document.createElement('div');
container.id = 'under-movie-div';
if (holder) {
holder.appendChild(container);
}
}
return container;
}
function add(text, onclick, ID) {
var upsellVideo = id('upsell-video'),
container = handleContainerCreation(),
button = document.createElement('button'),
span = document.createElement('span');
ID = ID || text.replace(/[^a-zA-Z0-9-_]/, '');
if ( !location.href.match(rYoutubeWhitelistedUrls) || id(ID) ) { return; }
if (typeof text !== 'string' || typeof onclick !== 'function') { return; }
span.setAttribute('class', 'yt-uix-button-content');
span.appendChild( document.createTextNode(text) );
button.id = ID;
button.addEventListener('click', function () {
window.setTimeout(onclick, 0);
}, false);
button.type = 'button';
button.setAttribute('class', 'under-movie-div-button yt-uix-button yt-uix-button-text yt-uix-tooltip');
button.appendChild(span);
return container.appendChild(button);
}
waitForHeadReady();
return add;
}());
/* EXAMPLE BUTTON
addButtonToContainer('A Test Button', function () { alert('Test.'); }, 'test-button');
*/