Hide threads not interested in from unread forum posts listing by one click
目前為
// ==UserScript==
// @name [GMT] Ignored forums and threads
// @namespace https://greasyfork.org/users/321857-anakunda
// @version 1.01.0
// @description Hide threads not interested in from unread forum posts listing by one click
// @author Anakunda
// @copyright 2021, Anakunda (https://greasyfork.org/users/321857-anakunda)
// @license GPL-3.0-or-later
// @match https://*/forums.php
// @match https://*/forums.php?action=unread
// @match https://*/forums.php?action=unread&page=*
// @match https://*/forums.php?page=*&action=unread
// @match https://*/forums.php?action=viewforum&*
// @match https://*/forums.php?page=*&action=viewforum&*
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_deleteValue
// @grant GM_registerMenuCommand
// ==/UserScript==
'use strict';
function hasStyleSheet(name) {
if (name) name = name.toLowerCase(); else throw 'Invalid argument';
const hrefRx = new RegExp('\\/' + name + '\\b', 'i');
if (document.styleSheets) for (let styleSheet of document.styleSheets)
if (styleSheet.title && styleSheet.title.toLowerCase() == name) return true;
else if (styleSheet.href && hrefRx.test(styleSheet.href)) return true;
return false;
}
const isLightTheme = ['postmod', 'shiro', 'layer_cake', 'proton', 'red_light'].some(hasStyleSheet);
if (isLightTheme) console.log('Light Gazelle theme detected');
const isDarkTheme = ['kuro', 'minimal', 'red_dark'].some(hasStyleSheet);
if (isDarkTheme) console.log('Dark Gazelle theme detected');
try { var ignoredThreads = GM_getValue('ignored_threads', { }) } catch(e) { ignoredThreads = { } }
if (!Array.isArray(ignoredThreads[document.location.hostname])) ignoredThreads[document.location.hostname] = [ ];
try { var ignoredForums = GM_getValue('ignored_forums', { }) } catch(e) { ignoredForums = { } }
if (!Array.isArray(ignoredForums[document.location.hostname])) ignoredForums[document.location.hostname] = [ ];
console.info(ignoredThreads[document.location.hostname].length, 'ignored threads in total');
console.info(ignoredForums[document.location.hostname].length, 'ignored forums in total');
const ignOpacity = GM_getValue('ignored_opacity', 0.5);
const ignColor = 'grey';
const params = new URLSearchParams(document.location.search);
let action = params.get('action');
if (!action) {
for (let tr of document.body.querySelectorAll('table.forum_index > tbody > tr:not(.colhead)')) {
let forumId = tr.querySelector('td > h4 > a');
if (forumId != null) forumId = new URLSearchParams(forumId.search); else continue; // assertion failed!
if (!(forumId = parseInt(forumId.get('forumid')))) continue; // assertion failed!
if (ignoredForums[document.location.hostname].includes(forumId)) tr.style.opacity = ignOpacity;
}
return;
} else action = action.toLowerCase();
function getThreadId(tr) {
if (!(tr instanceof HTMLTableRowElement)) return undefined;
let a = tr.children[1].getElementsByTagName('a');
return a.length > 0 ? parseInt(new URLSearchParams(a[0].search).get('threadid')) : undefined;
}
function getForumId(tr) {
if (!(tr instanceof HTMLTableRowElement)) return undefined;
let a = tr.children[0].getElementsByTagName('a');
return a.length > 0 ? parseInt(new URLSearchParams(a[0].search).get('forumid')) : undefined;
}
function threadClickHandler(evt) {
const tr = evt.currentTarget.parentNode.parentNode, threadId = getThreadId(tr);
if (!threadId) throw 'invalid page structure';
const index = ignoredThreads[document.location.hostname].indexOf(threadId);
if (index < 0) ignoredThreads[document.location.hostname].push(threadId);
else ignoredThreads[document.location.hostname].splice(index, 1);
GM_setValue('ignored_threads', ignoredThreads);
evt.currentTarget.textContent = index < 0 ? '+' : 'X';
evt.currentTarget.style.color = index < 0 ? 'green' : 'red';
if (action == 'unread') tr.style.visibility = index < 0 ? 'collapse' : 'visible';
tr.style.opacity = index < 0 ? ignOpacity : null;
return false;
}
function forumClickHandler(evt) {
const index = ignoredForums[document.location.hostname].indexOf(_forumId);
if (index < 0) ignoredForums[document.location.hostname].push(_forumId);
else ignoredForums[document.location.hostname].splice(index, 1);
GM_setValue('ignored_forums', ignoredForums);
evt.currentTarget.textContent = index < 0 ? '+' : 'X';
evt.currentTarget.style.color = index < 0 ? 'green' : 'red';
updateView();
return false;
}
switch (action) {
case 'unread':
var selector = 'table#unread_posts_table';
var hdrCallback = function(tr) {
tr.children[0].width = '16%';
tr.children[2].removeAttribute('width');
};
break;
case 'viewforum': {
selector = 'table.forum_index';
hdrCallback = tr => { tr.children[3].style.width = '11%' };
var _forumId = parseInt(new URLSearchParams(document.location.search).get('forumid'));
const h2 = document.body.querySelector('div#content h2');
if (h2 == null) break; // assertion failed
const span = document.createElement('SPAN'), a = document.createElement('A');
span.className = 'forum-ignore';
span.style = 'float: right; margin-left: 1em;';
a.href = '#';
a.className = 'brackets';
if (ignoredForums[document.location.hostname].includes(_forumId)) {
a.textContent = '+';
a.style.color = 'green';
} else {
a.textContent = 'X';
a.style.color = 'red';
}
a.onclick = forumClickHandler;
a.title = 'Ignore/unignore this subforum from unread forum threads view';
span.append(a);
h2.append(span);
break;
}
default: throw 'invalid location';
}
selector += ' > tbody > tr';
function updateView() {
for (let tr of document.body.querySelectorAll(selector)) {
let td = tr.querySelector('td.thread-ignore');
if (tr.classList.contains('colhead')) {
if (td == null) {
td = document.createElement('td');
if (typeof hdrCallback == 'function') hdrCallback(tr);
td.className = 'thread-ignore';
td.textContent = 'Ignore';
td.style.width = '6%';
tr.append(td);
}
td.hidden = _forumId > 0 && ignoredForums[document.location.hostname].includes(_forumId);
continue;
}
const forumId = _forumId || getForumId(tr), threadId = getThreadId(tr);
let a = td && td.querySelector('a.ignore');
if (a == null) {
a = document.createElement('a');
a.href = '#';
a.className = 'brackets ignore';
a.onclick = threadClickHandler;
a.title = 'Ignore/unignore this thread from unread forum threads view';
}
if (forumId > 0 && ignoredForums[document.location.hostname].includes(forumId)
|| threadId > 0 && ignoredThreads[document.location.hostname].includes(threadId)) {
if (action == 'unread') tr.style.visibility = 'collapse';
tr.style.opacity = ignOpacity;
a.textContent = '+';
a.style.color = 'green';
} else {
if (action == 'unread') tr.style.visibility = 'visible';
tr.style.opacity = null;
a.textContent = 'X';
a.style.color = 'red';
}
if (td == null) {
td = document.createElement('TD');
td.className = 'thread-ignore';
td.style.textAlign = 'center';
td.append(a);
tr.append(td);
}
td.hidden = ignoredForums[document.location.hostname].includes(forumId);
}
}
updateView();
if (action != 'unread' || typeof GM_registerMenuCommand != 'function') return;
GM_registerMenuCommand('Temporarily show ignored threads', function() {
document.body.querySelectorAll(selector)
.forEach(tr => { if (tr.style.visibility == 'collapse') tr.style.visibility = 'visible' });
}, 'S');