MangaDex Inline Comments

Display chapter comments inside MangaDex's sidebar

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Greasemonkey 油猴子Violentmonkey 暴力猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Violentmonkey 暴力猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴Userscripts ,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey 篡改猴,才能安装此脚本。

您需要先安装一款用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==UserScript==
// @name         MangaDex Inline Comments
// @namespace    metapone
// @version      0.2.1
// @description  Display chapter comments inside MangaDex's sidebar
// @author       metapone
// @license      GPL-2.0-only; https://opensource.org/licenses/GPL-2.0
// @homepage     https://github.com/metapone/userscript-collection
// @supportURL   https://github.com/metapone/userscript-collection/issues
// @noframes
// @match        *://mangadex.org/chapter/*
// @grant        GM_addStyle
// ==/UserScript==

GM_addStyle('\
	/* Fix unable to click on scrollbar because of invisible swiping divs */\
	#right_swipe_area {\
		display: none;\
	}\
\
	/* Fix overlapping flex items */\
	.reader-controls-mode, .reader-controls-footer {\
		flex-shrink: 0 !important;\
	}\
\
	/* Fix sidebar going off-screen because of the collapser */\
	.reader-controls {\
		max-width: calc(100% - 34px);\
	}\
');

function updateSidebar() {
	let modeNode = document.querySelector('.reader-controls-mode');
	let footerNode = document.querySelector('.reader-controls-footer');
	let pageNode = document.querySelector('.reader-controls-pages');
	let oldWrapperNodes = document.querySelectorAll('.inline-comments'); // Multiple divs can show up if users switch chapter too fast

	// Clear old comments
	if (oldWrapperNodes) {
		for (let i = 0; i < oldWrapperNodes.length; i++) {
			oldWrapperNodes[i].parentNode.removeChild(oldWrapperNodes[i]);
		}
	}

	// Hide sidebar components. Comment out anything you want to keep
	modeNode.style.setProperty('display', 'none', 'important'); // Common keyboard shortcuts
	footerNode.style.setProperty('display', 'none', 'important'); // Footer credit

	// Push pagination to the bottom of the sidebar
	if (footerNode.style.display === 'none') pageNode.classList.add('mt-auto');

	addToggleCommentButton();
}

function addToggleCommentButton() {
	let oldToggleCommentNode = document.querySelector('.toggle-comments');

	/* Reset node state if already exists, else create a new node */
	if (oldToggleCommentNode) {
		oldToggleCommentNode.querySelector('#kbd_comment_usage').textContent = 'Show comments';
	} else {
		let toggleCommentNode = document.createElement('div');
		toggleCommentNode.className = 'toggle-comments cursor-pointer pt-2 pb-2 pl-2';

		/* Inner content */
		let kbNode = document.createElement('kbd');
		kbNode.innerHTML = '&nbsp;k/numpad 5';

		let whitespaceNode = document.createTextNode('\u00A0');

		let iconNode = document.createElement('span');
		iconNode.className = 'fas fa-comments fa-fw';
		iconNode.setAttribute('aria-hidden', 'true');
		iconNode.title = 'Display comments';

		let usageNode = document.createElement('span');
		usageNode.id = 'kbd_comment_usage';
		usageNode.textContent = 'Show comments';

		toggleCommentNode.appendChild(kbNode);
		toggleCommentNode.appendChild(whitespaceNode);
		toggleCommentNode.appendChild(iconNode);
		toggleCommentNode.appendChild(whitespaceNode.cloneNode(true));
		toggleCommentNode.appendChild(usageNode);
		/* END inner content */

		/* Event listener */
		toggleCommentNode.addEventListener('click', handleToggleComments);

		document.addEventListener('keydown', function (e) {
			// 12 is 5 in numpad with NumLock off
			// 101 is 5 in numpad with NumLock on
			// 75 is k
			if (e.keyCode === 12 || e.keyCode === 101 || e.keyCode === 75) handleToggleComments();
		});
		/* END event listener */

		let footerNode = document.querySelector('.reader-controls-footer');
		footerNode.parentNode.insertBefore(toggleCommentNode, footerNode);
	}
}

function handleToggleComments() {
	let textNode = document.querySelector('#kbd_comment_usage');

	toggleComments(textNode.textContent.indexOf('Hide') === -1);

	if (textNode.textContent.indexOf('Hide') === -1) {
		textNode.textContent = 'Hide comments';

		let oldWrapperNodes = document.querySelector('.inline-comments');
		if (!oldWrapperNodes) insertComments();
	} else {
		textNode.textContent = 'Show comments';
	}
}

function toggleComments(isDisplay) {
	let oldWrapperNode = document.querySelector('.inline-comments');
	if (oldWrapperNode) oldWrapperNode.style.display = !!isDisplay ? '' : 'none';
}

function insertComments() {
	let oldChapterId = lastChapterId;
	let xhr = new XMLHttpRequest();
	xhr.open('GET', '/chapter/' + lastChapterId + '/comments');
	xhr.responseType = 'document';
	xhr.addEventListener('load', function () {
		// Only display comments if user hasn't switched chapter before the request finished
		if (xhr.status !== 200 || oldChapterId !== lastChapterId) return;

		let htmlDocument = xhr.responseXML.documentElement;
		let posts = htmlDocument.querySelectorAll('table .post:not(.post-moderated)');
		let wrapperNode = document.createElement('div');

		wrapperNode.className = 'inline-comments';
		wrapperNode.style.overflow = 'auto';
		wrapperNode.style.overflowWrap = 'break-word';
		wrapperNode.style.wordWrap = 'break-word';

		for (let i = 0; i < posts.length; i++) {
			let poster = posts[i].querySelector('td:first-child span');
			let post = posts[i].querySelector('.postbody');
			let commentNode = document.createElement('div');

			if (!(i % 2)) commentNode.style.backgroundColor = 'rgba(0,0,0,.05)';
			commentNode.innerHTML = '<div style="color: #06f">' + poster.innerHTML + '</div>' + post.innerHTML;
			wrapperNode.appendChild(commentNode);
		}

		// Button to redirect to chapter thread
		let toThread = htmlDocument.querySelector('table+div');
		if (toThread) wrapperNode.appendChild(toThread);

		let footerNode = document.querySelector('.reader-controls-footer');
		footerNode.parentNode.insertBefore(wrapperNode, footerNode);

		fixSpoilerButton(wrapperNode);
	});
	xhr.send();
}

function fixSpoilerButton(post) {
	let spoilerBtns = post.querySelectorAll('.btn-spoiler');
	for (let i = 0; i < spoilerBtns.length; i++) {
		spoilerBtns[i].addEventListener('click', function () {
			this.nextElementSibling.classList.toggle('display-none');
		});
	}
}

let lastPath = '';
let lastChapterId = '';

setInterval(function () {
	if (lastPath !== location.pathname) {
		lastPath = location.pathname;
		let path = location.pathname.split('/');
		if (path.length === 4 && !isNaN(path[3]) && lastChapterId !== path[2]) {
			lastChapterId = path[2];
			updateSidebar();
		}
	}
}, 500);