Automatically adds a table of contents to Kanka entity pages under the Pins sidebar.
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// ==UserScript==
// @name Kanka Automatic Table of Contents
// @namespace http://tampermonkey.net/
// @version 12
// @description Automatically adds a table of contents to Kanka entity pages under the Pins sidebar.
// @author Salvatos
// @license MIT
// @match https://app.kanka.io/*
// @exclude */html-export*
// @icon https://www.google.com/s2/favicons?domain=kanka.io
// @grant GM_addStyle
// ==/UserScript==
// Run only on entity Story pages
if (document.body.classList.contains("entity-story")) {
/* Preferences */
const stickyTOC = true; // true or false
const addTopLink = ""; // "your text" or "" for no link back to ToC after headings
const classExclusions = ["calendar", "modal", "box-entity-attributes", "toc-ignore"]; // Comma-delimited list of HTML classes to ignore
// Out of the box: calendar tables, modals, character sheets, sections below entry & posts
/* Set arrays */
var headings = [];
const tag_names = ["h1", "h2", "h3", "h4", "h5", "h6"]
/* Pre-cleaning: remove stray line breaks left by Summernote at the end of headings so our TOC link doesn't get pushed to a new line */
document.querySelectorAll(':is(h1, h2, h3, h4, h5, h6) br:last-child').forEach( (br) => br.remove() );
/* Pre-cleaning: tag out headers in sections other than entry and posts, and hidden transcluded content */
document.querySelectorAll(`.row-add-note-button + div :is(h1, h2, h3, h4, h5, h6),
.mention-entry-content .no-transclusion`).forEach( (ex) => ex.classList.add("toc-ignore") );
/* Walks through DOM looking for selected elements */
function walk( root ) {
// Make sure the node is a valid element and skip unwanted classes
console.log(root);
if( root.nodeType === 1 && root.nodeName !== 'script' && classExclusions.every( (c) => !root.classList.contains(c) ) ) {
if( tag_names.includes(root.nodeName.toLowerCase()) ) { // Any H tag gets added; don’t delve further
headings.push( root );
} else { // Walk through descendants
// Add an entry wherever we find the Entry box
if (root.classList.contains("box-entity-entry")) {
headings.push( root );
}
for( var i = 0; i < root.childNodes.length; i++ ) {
walk( root.childNodes[i] );
}
}
}
}
// Find and walk through the main content block
walk( document.querySelector('.entity-main-block') );
/* Start main list */
var level = 0, past_level = 0;
var hList = `
<div id='toc' class='sidebar-section-box overflow-hidden flex flex-col gap-2'>
<div class="sidebar-section-title cursor-pointer text-lg user-select border-b element-toggle" data-animate="collapse" data-target="#sidebar-toc-list" onclick="this.classList.toggle('animate-collapsed'); document.getElementById('sidebar-toc-list').classList.toggle('hidden');">
<i class="fa-solid fa-chevron-up icon-show" aria-hidden="true"></i>
<i class="fa-solid fa-chevron-down icon-hide" aria-hidden="true"></i>
Table of contents
</div>
<div class="sidebar-elements" id="sidebar-toc-list">
<div class="flex flex-col gap-2 text-xs">
<ul id='tableofcontents'>
`;
/* Create sublists to reflect heading level */
for( var i = 0; i < headings.length; i++ ) {
// Entry, post and era titles act as level-0 headers; timeline events as level 1; everything else per its H tag
level = ( headings[i].classList.contains("post-title") || headings[i].classList.contains("box-entity-entry") || headings[i].parentElement.classList.contains("timeline-era-head") || headings[i].parentElement.querySelector(".post-buttons") ) ? 0 : ( headings[i].parentElement.classList.contains("timeline-item-head") ) ? 1 : headings[i].nodeName.substr(1);
if (level > past_level) { // Go down a level
for(var j = 0; j < level - past_level; j++) {
hList += "<li><ul>";
}
}
else if (level < past_level) { // Go up a level
for(var j = 0; j < past_level - level; j++) {
hList += "</ul></li>";
}
}
/* Handle heading text (it gets complicated with Timeline elements and inline tags, so we can’t just innerText it) */
if (headings[i].classList.contains("box-entity-entry")) {
headingText = "Entry";
}
else {
var headingText = headings[i],
child = headingText.firstChild,
texts = [];
// Iterate through heading nodes
while (child) {
// Not a tag (text node)
if (!child.tagName) {
texts.push(child.data);
//console.log("1: " + child.data); // Why am I getting so many empty text nodes?
}
// Identify and manage HTML tags
else {
// Text-muted tag, i.e. a Timeline date ;; no longer relevant but keeping for reference
/*
if (child.classList.contains("text-muted")) {
//texts.push('<span class="text-muted">' + child.innerText + '</span>');
texts.push(child.innerText);
console.log("2: " + child.innerText);
}
*/
// Screenreader prompt
if (child.classList.contains("sr-only")) {
// exclude
}
// Push text
else {
texts.push(child.innerText);
//console.log("3: " + child.innerText);
}
}
child = child.nextSibling;
}
headingText = texts.join("");
}
// Ignore empty H tags, which Summernote sometimes leaves behind; for everything else, proceed
if (headingText.length > 0) {
/* Add an ID to the Entry box so we can link to it */
if (document.querySelector(".box-entity-entry")) { // In rare cases, there is none (i.e. after saving an empty entry in Code View)
document.querySelector(".box-entity-entry").id = "toc-entry";
}
/* Check if heading already has an ID, else create one */
if (headings[i].id.length < 1) {
headings[i].id = "h" + i + "-" + headingText.trim().replace(/\s+/g, "-").replace(/^[^\p{L}]+|[^\p{L}\p{N}:.-]+/gu, "");
// Index included to ensure a unique ID with duplicate titles
}
/* Create link in TOC */
var parentId, parentEra;
// Timelines require special handling since they have different markup and a collapsed event can be in a collapsed era
// Event
if ( headings[i].closest('li[id|="timeline-element"]') ) {
parentId = headings[i].closest('li[id|="timeline-element"]').id;
parentEra = "era" + headings[i].closest('ul[id|="era-items"]').id.match(/\d+/);
}
// Era
else if ( headings[i].closest('div.timeline-era') ) {
parentId = headings[i].closest('div.timeline-era').id;
}
// Post or entry
else {
if (headings[i].closest('article:is(.box-entity-entry, .post-block)')) {
parentId = headings[i].closest('article:is(.box-entity-entry, .post-block)').id;
}
// Special posts like character sheets or relations are in non-collapsible divs; treat the heading as its own target
else {
parentId = headings[i].id
}
}
hList += "<li class='toc-level-" + level + "'><a href='#" + headings[i].id + "' data-parent-post='" + parentId + "'" + ((parentEra) ? "data-parent-era='" + parentEra + "'" : "") + ">" + headingText + "</a></li>";
/* Add "toc" link to non-box headings */
if (addTopLink && level > 0 && !headings[i].parentElement.classList.contains("entity-mention")) { // That last condition is to omit Extraordinary Tooltips and other transclusions
headings[i].insertAdjacentHTML("beforeend", "<a class='to-top' href='#toc' title='Back to table of contents'> ^ " + addTopLink + "</a>");
}
/* Update past_level */
past_level = level;
}
}
/* Close sublists per current level */
for(var k = 0; k < past_level; k++) {
hList += "</li></ul>";
}
/* Close TOC */
hList += "</div></div></div>";
// Final check: if we haven’t added a single item yet, don’t add the ToC to the DOM (no entry, post or era)
if ( hList.match(/<li/) ) {
/* Insert element after History block */
/* Calendars use only one sidebar */
if (document.body.classList.contains("kanka-entity-calendar")) {
document.querySelector('.entity-submenu > div').insertAdjacentHTML("beforeend", hList);
}
/* Everything else */
else {
document.querySelector('.entity-sidebar').insertAdjacentHTML("beforeend", hList);
}
// Sticky block
if (stickyTOC) {
document.getElementById("toc").style = "position: sticky;top: 4.25em;max-height: calc(100vh - 5.5em);overflow-y: auto;";
document.getElementById("sidebar-toc-list").style = "overflow-y: auto;";
}
/* Listener: If the target heading is in a collapsed post, expand it first */
// For headings within posts, we need to find the parent to open, then scroll to the targeted heading once rendered
document.querySelectorAll("#tableofcontents :not(.toc-level-0) a").forEach( (anchor) => {
anchor.addEventListener('click', (event) => {
var targetPost = event.target.dataset.parentPost,
targetEra = event.target.dataset.parentEra;
// Check that a toggle exists first; special posts don’t have one
if (document.querySelector("#" + targetPost + " .element-toggle") && document.querySelector("#" + targetPost + " .element-toggle").classList.contains("animate-collapsed")) {
document.querySelector("#" + targetPost + " .element-toggle").click();
}
// If the target is a Timeline event, we also need the parent era to be expanded
if (targetEra && document.querySelector("#" + targetEra + " .element-toggle").classList.contains("animate-collapsed")) {
document.querySelector("#" + targetEra + " .element-toggle").click();
}
// Wait a bit for rendering and scroll to appropriate heading
let targetHeading = document.querySelector(event.target.getAttribute("href"));
setTimeout(function(){ targetHeading.scrollIntoView(); }, 300);
});
});
// For direct links to posts and timeline eras, just pop them open as we go
document.querySelectorAll("#tableofcontents .toc-level-0 a:not([href='#toc-entry'])").forEach( (anchor) => {
anchor.addEventListener('click', (event) => {
var targetPost = event.target.dataset.parentPost;
// Check that a toggle exists first; special posts don’t have one
if (document.querySelector("#" + targetPost + " .element-toggle") && document.querySelector("#" + targetPost + " .element-toggle").classList.contains("animate-collapsed")) {
document.querySelector("#" + targetPost + " .element-toggle").click();
}
});
});
}
GM_addStyle(`
#tableofcontents {
padding: 5px 0;
margin: 0;
list-style: none;
overflow: hidden;
overflow-wrap: anywhere;
ul {
padding: 0 0 0 5px;
margin-bottom: 2px;
list-style: none;
li {
padding-left: 5px;
hyphens: auto
}
li:not(:has(li))::marker {
content: "⟡";
}
}
a {
font-size: 13px;
}
li.toc-level-0 a {
font-weight: bold;
}
}
.to-top {
vertical-align: super;
font-variant: all-petite-caps;
font-size: 10px;
}
`);
}