I missed Topic Tuesday! The holiday threw me off, but this gives me a chance to share something I just worked on in Confluence. I had a request from a group to incorporate a floating table of contents into some of their pages. In the past I have used the Custom HTML or Stylesheet areas of the admin look and feel to inject some CSS and/or javascript, but I have never felt comfortable doing that since it impacts the entire site. That's when I thought of the HTML Macro.
If you've never used it before, it is basically just a macro that allows you to inject code directly into the page and, as you can imagine, it is disabled by default. Because of the power this macro has, I wouldn't recommend turning this on in an environment where you don't trust the users. Since our Confluence has only internal users, we have enabled it (details for turning it on are at https://confluence.atlassian.com/doc/html-macro-38273085.html).
After that, it's simply a matter of adding your CSS, javascript, and/or HTML to the body of the macro. I'm not the world's best front-end developer so it took me awhile to get what I wanted and I relied heavily on Google, but the end result turned out pretty good:
I'm putting the code I used below, but not giving much explanation so feel free to ask questions if you want to understand how it does what it does. The trick was finding out what Confluence gives you on the page and then targeting the page elements and applying scripts and styling to give the desired effect.
Step-by-step guide
There are two pieces required for getting this to work. First you must add a Table of Contents macro with the correct settings and then you must add an HTML macro with the CSS and Javascript.
Table of Contents Macro
- Divide the layout of your page so that there is an empty column on the right of the page where the menu will float.
- Add a Table of Contents macro and set the heading levels appropriately (the special formatting in the floating menu will only work for the first 3 levels, but you can start anywhere, ie 2-4, or 1-3, or 3-5, etc):
- Uncheck the box for Printable and enter ts-toc-btf as the CSS Class Name:
- Save the page.
HTML Macro
- Add an HTML macro anywhere on the page (it isn't visible and it is easier to keep track of if you put it under the Table of Contents macro):
- Copy the Minimized code below and paste it into the HTML macro.
- Tweak style settings if desired–the Readable code below can help identify what changes can be made.
Code
<!-- Title: Floating Table of Contents
Author: Wade Tracy
This code sets up the floating table of contents
- Formatting is configured for up to 3 levels of headings
- Control your heading levels from the TOC macro
How to use:
1. Use a page layout that puts at least one column on the right to reserve space for the TOC
2. Insert a TOC macro in the right column of the layout
3. Change the TOC settings and specify ts-toc-btf for the 'CSS Class Name'
4. Somewhere in the page (it won't be visible) insert an HTML macro and paste in this code
5. Feel free to modify css to get the styling you want
-->
<style>
.ts-toc-btf {
float: right;
position: fixed;
width: inherit;
right: 0px;
top: 300px;
background: rgba(229, 232, 232, 0.5);
overflow-wrap: normal;
visibility: hidden;
}
.navigation ul {
list-style-type: none;
padding: 0px;
}
.navigation>ul {
padding: 10px 15px 10px 10px;
}
.navigation ul li {
white-space: nowrap;
}
.navigation ul li a {
padding: 0 0 0 10px;
}
.navigation ul li ul li a {
padding: 0 0 0 20px;
}
.navigation ul li ul li ul li a {
padding: 0 0 0 30px;
}
.navigation ul li li {
white-space: nowrap;
}
.navigation ul li span.active a {
font-weight: bold;
color: #222222;
border-left: 2px solid #222222;
}
.navigation ul li a:link,
.navigation ul li a:visited,
.navigation ul li a:active,
.navigation ul li a:hover,
.navigation ul li a:focus {
color: #4a72c2;
text-decoration: none;
}
</style>
<script type="text/javascript">
/*!
* Scrollspy Plugin
* Author: r3plica
* Licensed under the MIT license
*/
; (function ($, window, document, undefined) {
// Add our plugin to fn
$.fn.extend({
// Scrollspy is the name of the plugin
scrollspy: function (options) {
// Define our defaults
var defaults = {
namespace: 'scrollspy',
activeClass: 'active',
animate: false,
duration: 1000,
offset: 0,
container: window,
replaceState: false
};
// Add any overriden options to a new object
options = $.extend({}, defaults, options);
var add = function (ex1, ex2) {
return parseInt(ex1, 10) + parseInt(ex2, 10);
};
// Find our elements
var findElements = function (links) {
var elements = [];
// Loop through the links
for (var i = 0; i < links.length; i++) {
var link = links[i];
// Get our hash
var hash = $(link).attr("href");
// Store our has as an element
var element = $("[id='" + hash.replace('#','') + "']");
// If we have an element matching the hash
if (element.length > 0) {
// Get our offset
var top = Math.floor(element.offset().top),
bottom = top + Math.floor(element.outerHeight());
// Add to our array
elements.push({ element: element, hash: hash, top: top, bottom: bottom });
}
}
return elements;
};
// Find our link from a hash
var findLink = function (links, hash) {
for (var i = 0; i < links.length; i++) {
var link = $(links[i]);
// If our hash matches the link href
if (link.attr("href") === hash) {
// Return the link
return link;
}
}
};
// Reset classes on our elements
var resetClasses = function (links) {
// For each link
for (var i = 0; i < links.length; i++) {
// Get our current link
var link = $(links[i]);
// Remove the active class
link.parent().removeClass(options.activeClass);
}
};
// Find the nearest heading whether at the top of the screen or off the screen
var getActiveHeadingHash = function (elements) {
// Get the position and store in an object
var position = {
top: add($(this).scrollTop(), Math.abs(options.offset)),
left: $(this).scrollLeft()
};
// Store the nearest heading off the top of the page
var nearest = null;
// Loop through our elements
for (var i = 0; i < elements.length; i++) {
// Get our current item
var current = elements[i];
// If we are within the boundaries of our element return that link
if (position.top >= current.top && position.top <= current.bottom)
return current.hash;
// Otherwise, return the closest of the top of the screen--they are in order
else if (position.top > current.bottom) {
nearest = current.hash;
}
}
return nearest;
};
// Store last fired scroll event
var scrollArea = '';
// For each scrollspy instance
return this.each(function () {
// Declare our global variables
var element = this,
container = $(options.container);
// Get our objects
var links = $(element).find('a');
// Loop through our links
for (var i = 0; i < links.length; i++) {
// Get our current link
var link = links[i];
// Bind the click event
$(link).on("click", function (e) {
// Get our target
var target = $(this).attr("href"),
$target = $(target);
// If we have the element
if ($target.length > 0) {
// Get it's scroll position
var top = add($target.offset().top, options.offset);
// If animation is on
if (options.animate) {
// Animate our scroll
$('html, body').animate({ scrollTop: top }, options.duration);
} else {
// Scroll to our position
window.scrollTo(0, top);
}
location.hash = target;
// Prevent our link
e.preventDefault();
}
});
}
// Set links
resetClasses(links);
// Get our elements (targets of the navigation links)
var elements = findElements(links);
var trackChanged = function() {
// Create a variable for our link
var link;
// get our element
var hash = getActiveHeadingHash(elements);
// Get the link
link = findLink(links, hash);
// If we have a link
if (link) {
// If we have an onChange function
if (options.onChange && (scrollArea !== hash)) {
// Fire our onChange function
options.onChange(current.element, $(element), position);
// set scrollArea
scrollArea = hash;
}
// Update url
if (options.replaceState) {
history.replaceState( {}, '', '/' + hash );
}
// Reset the classes on all other link
resetClasses(links);
// Add our active link to our parent
link.parent().addClass(options.activeClass);
}
// If we don't have a link and we have a exit function
if (!link && (scrollArea !== 'exit') && options.onExit) {
// Fire our onChange function
options.onExit($(element), position);
// Reset the classes on all other link
resetClasses(links);
// set scrollArea
scrollArea = 'exit';
// Update url
if (options.replaceState) {
history.replaceState( {}, '', '/' );
}
}
};
// Add a listener to the window
container.bind('scroll.' + options.namespace, function () {
trackChanged();
});
$(document).ready(function (e) {
trackChanged();
});
});
}
});
})(jQuery, window, document, undefined);
var getMenuWidth = function() {
// Need to get the padding of the main window since menu goes to edge of window
var mainPadding = ($('#main').innerWidth() - $('#main').width()) / 2;
var parentWidth = AJS.$(".ts-toc-btf").parent().parent().outerWidth();
return parentWidth + mainPadding;
};
AJS.$(window).load(function(){
var content_top = AJS.$('#content').offset().top;
var menu_width = getMenuWidth();
var max_width = AJS.$('.ts-toc-btf').width();
AJS.$(".ts-toc-btf")
.addClass('navigation')
.attr('id', 'nav')
.css({'top': content_top, 'visibility': 'visible', 'width': menu_width, 'max-width': max_width});
AJS.$("#nav").scrollspy();
});
AJS.$(window).resize(function() {
var menu_width = getMenuWidth();
AJS.$(".ts-toc-btf")
.css({'width': menu_width});
});
</script>
