/**
* autonav script
*
* Automatically adds previous and next chapter links to the top and bottom of
* each chapter in the book, based on the order of the chapters on the
* chapter's parent page. Links not prefixed by the parent page and to the
* print version are ignored. Also shows a small list of all chapters at the
* bottom and at the sidebar of each chapter.
*
* This program is available under CC0 1.0, viewable at
* http://creativecommons.org/publicdomain/zero/1.0/.
*/
(function(mw, $, d) {
'use strict';
mw.loader.using('mediawiki.api', function() {
$(d).ready(function() {
var title = mw.config.get('wgTitle'),
titleparts = title.split('/'),
bookTitle = titleparts[0],
parentPagePath = title.substring(0, title.lastIndexOf('/')),
parentPageEscapedPath = parentPagePath.replace('"', '"'),
chapterTitle = titleparts[titleparts.length - 1],
api;
function addNavigation(bookTitle, chapterTitle, $previous, $next, $all) {
var $content = $('#mw-content-text'),
$nav = $('<div class="noprint" style="text-align: center" />'),
$allnav = $('<div class="autonav-all noprint" style="font-size: x-small; text-align: center; line-height: 1.3em" />'),
$sidenav = $('<ul />').css('list-style-type', 'decimal').css('color', 'rgb(100, 100, 100)'),
$el,
i;
// add previous and next links to $nav
if ($previous.length) {
$previous.text('← ' + $previous.text());
$nav.append($previous);
$nav.append(' · ');
}
$nav.append($('<a />').attr('href', mw.util.getUrl(bookTitle)).css('font-weight', 'bold').text(bookTitle));
if ($next.length) {
$nav.append(' · ');
$next.text($next.text() + ' →');
$nav.append($next);
}
// add list of all chapters shown at the bottom to $allNav
for (i = 0; i < $all.length; i++) {
if ($all[i].title === title) {
$el = $('<span />').text(chapterTitle);
$allnav.append($el.clone().css('font-weight', 'bold'));
$sidenav.append($('<li />').append($el.css('color', 'black')));
} else {
$allnav.append($($all[i]).clone());
$sidenav.append($('<li />').append($all[i]));
}
if (i < $all.length - 1) {
$allnav.append(' · ');
}
}
// add the created divs to $content, and hide the redundant #contentSub div
$content.prepend($nav.clone().addClass('autonav-top').css('font-size', 'smaller'));
$('#contentSub').hide();
$content.append($nav.clone().addClass('autonav-bottom').wrapInner('<span style="border-top: solid thin rgb(170, 170, 170); padding: 2px 5px" />'));
$content.append($allnav);
$('<div class="portal expanded portlet">')
.append('<h3 style="text-transform: initial"><a>' + bookTitle + '</a></h3>')
.append($sidenav.wrap('<div class="body pBody autonav-sidebar" style="display: block" />').parent())
.appendTo('#mw-panel, #column-one, #mw_portlets');
}
// start with a bunch of error checks
if (true !== true) {
mw.log('API is disabled');
return;
}
if (mw.Api === undefined) {
mw.log('mw.Api is undefined');
return;
}
if (mw.config.get('wgNamespaceNumber') !== 0) {
mw.log('Not in the main namespace');
return;
}
if (titleparts.length < 2) {
mw.log('Not in a subpage');
return;
}
if (chapterTitle === 'Print version') {
mw.log('Not a chapter');
return;
}
// get HTML for the book's main page from the server
api = new mw.Api();
api.get( {
action: 'parse',
page: parentPagePath
}).done(function(data) {
var links, i, previous = null, next = null;
// get <a /> elements for all chapters, in order
// all chapter links look like <a title="Book Title/Chapter Title" …>Chapter Title</a>
// red links have " (page does not exist)" at the end of the title attribute
links = $('a[title^="' + parentPageEscapedPath + '/"]', data.parse.text['*'])
.not('.autonav-exclude a')
.not('[title="' + parentPageEscapedPath + '/Print version"]')
.filter(function isCorrectDepth() {
return this.title.lastIndexOf('/') == parentPagePath.length;
});
// loop through list of chapters until you find the current page
for (i = 0; i < links.length; i++) {
if (links[i].title === title || links[i].title === title + ' (page does not exist)') {
if (i > 0 && links[i - 1].title !== bookTitle + '/Print version') {
previous = links[i - 1];
}
if (i < links.length - 1 && links[i + 1].title !== bookTitle + '/Print version') {
next = links[i + 1];
}
addNavigation(bookTitle, chapterTitle, $(previous).clone(), $(next).clone(), links);
return;
}
}
}).fail(function(error) {
mw.log("Could not open book's main page: " + error);
});
});
});
}(mediaWiki, jQuery, document));
