/**

* Serendipity

*

* Endows Wikipedia with the “sense of wonder” and “serendipitous discoveries”

* that proud owners of the print Encyclopædia Britannica find sorely lacking on

* the Internet. Now, whenever you look up an entry in this ephemeral reference,

* “lose yourself” in the alphabetically adjacent bounty of knowledge that any

* self-respecting encyclopedia should offer by default.

*

* :-P

*/

if (mw.config.get("wgAction") == "view" && mw.config.get("wgNamespaceNumber") == 0) {

mw.loader.using("mediawiki.api", function () {

var api = new mw.Api();

/**

* Retrieves the rendered HTML content of an alphabetically adjacent

* article and passes the content to a callback function.

*

* @param forward {boolean} True to get the next page; false to get

* the previous one.

* @param ok {function} A callback function that takes two

* arguments: title, html.

*/

function fetchAdjacentArticle(forward, ok) {

api.get({

list: "allpages",

apfrom: mw.config.get("wgPageName"),

apnamespace: 0,

apfilterredir: "nonredirects",

aplimit: 2,

apdir: forward ? "ascending" : "descending",

}).done(function (data) {

var pages = data.query && data.query.allpages;

var page = pages && data.query.allpages[1];

if(!page) return;

$.get(mw.util.wikiScript("index"), {

title: page.title,

action: "render",

}, function (html) {

if (ok) ok(page.title, html);

}, "html");

});

}

/**

* Hides content features that facilitate user contributions, multimedia

* experiences, non-linear navigation, or fact-checking.

*/

function hideNewFangledFeatures() {

// Links

$("#bodyContent a").unbind("click").click(function (evt) {

evt.preventDefault();

evt.stopPropagation();

});

var extLinkHeadings = $("h2:contains('xternal link')");

extLinkHeadings.hide().nextAll("ul").hide();

if (extLinkHeadings) {

$(".toctext:contains('xternal link')").parent().hide();

}

// Cite extension

var refHeadings = $(".reflist").prev("h2:contains('eference')");

refHeadings.hide();

if (refHeadings) $(".toctext:contains('eference')").parent().hide();

// WikiMiniAtlas

wma_settings = {enabled: false};

// Stylesheets only need to be applied once.

if (hideNewFangledFeatures.stylesAdded) return;

hideNewFangledFeatures.stylesAdded = true;

// Links

mw.util.addCSS("#bodyContent a {" +

"background: transparent !important; cursor: inherit;" +

"color: inherit; padding-right: 0 !important;" +

"text-decoration: inherit;" +

"}");

// Abbreviations

mw.util.addCSS("#bodyContent abbr, #bodyContent acronym," +

"#bodyContent .explain {" +

"border-bottom: none; cursor: inherit;" +

"}");

// Software-powered features

mw.util.addCSS("#mw-articlefeedback, #catlinks, .mw-editsection," +

".magnify, .toctoggle {display: none;}");

// Cite extension

mw.util.addCSS(".reference, .reflist {display: none;}");

// Template-powered features

mw.util.addCSS("#coordinates, img[alt='play'], .navbox, .stub" +

"{display: none;}");

}

/**

* Inserts the contents of the previous article above the original one.

*/

function insertPreviousArticle(title, html) {

// Stuff the main article’s title inside its body element.

$("#bodyContent").prepend($("#firstHeading"));

$("#firstHeading").css({

"font-size": 1.25 * parseFloat($("#firstHeading").css("font-size")),

});

$("#bodyContent").prepend("

")

.prepend($(html).wrap("

"))

.prepend("

" +

"" + title + "" +

"

");

hideNewFangledFeatures();

};

/**

* Inserts the contents of the next article above the original one.

*/

function insertNextArticle(title, html) {

$("#bodyContent").append("

" +

"" + title + "" +

"

")

.append($(html).wrap("

"))

.append("

");

hideNewFangledFeatures();

};

$(function () {

fetchAdjacentArticle(false, insertPreviousArticle);

fetchAdjacentArticle(true, insertNextArticle);

});

});

}