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docgist.js
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docgist.js
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function DocGist($) {
'use strict';
var DEFAULT_SOURCE = decodeURIComponent('github-asciidoctor%2Fdocgist%2F%2Fgists%2Fexample.adoc');
var DEFAULT_HIGHLIGHTER = 'codemirror';
var UNAVAILABLE_HIGHLIGHTERS = ['coderay', 'pygments', 'source-highlight', 'highlight'];
var ASCIIDOCTOR_DEFAULT_ATTRIBUTES = {
'coderay-unavailable': '',
'compat-mode!': '@',
'doctype!': '@',
'env-docgist': '',
'env': 'docgist',
'example-caption!': '@',
'experimental': '@',
'icons': 'font',
'no-highlight!': '@',
'numbered!': '@',
'platform-opal': '',
'platform': 'opal',
'pygments-unavailable': '',
'sectanchors': '@',
'showcomments': '@',
'showtitle': '@',
'source-highlighter': DEFAULT_HIGHLIGHTER + '@',
'stem': 'asciimath@',
'stylesdir': 'style@',
'stylesheet': 'asciidoctor.css@',
'table-caption': '@',
'toc': '@',
'toclevels': '2@',
'version-label!': '@'
};
var THEMES = {
'asciidoctor': 'Asciidoctor',
'colony': 'Colony',
'foundation': 'Foundation',
'foundation-lime': 'Foundation (Lime)',
'foundation-potion': 'Foundation (Potion)',
'github': 'GitHub',
'golo': 'Golo',
'iconic': 'Iconic',
'maker': 'Maker',
'old-standard': 'Old Standard',
'readthedocs': 'Read the Docs',
'riak': 'Riak',
'rocket-panda': 'Rocket Panda',
'rubygems': 'RubyGems'
};
var THEMES_WITH_DARK_SOURCE_BLOCKS = [
'style/github.css',
'style/iconic.css',
'style/rubygems.css'
];
var $content;
var $footer;
var $gistId;
var $editor;
var $editButton;
var $saveButton;
var $footerWrapper;
var useLocalStorage = isLocalStorageWritable();
var gist = new Gist($);
var editor;
var urlInfo = undefined;
var urlAttributes;
var id;
function initFromUrl() {
urlInfo = getUrlAttributes();
urlAttributes = urlInfo.attributes;
id = urlInfo.id;
}
initFromUrl();
gist.getGistAndRenderPage(renderContent, urlInfo.id, DEFAULT_SOURCE);
$(document).ready(function () {
if (top.location != self.location) {
$('#main-menu').css('display', 'none');
}
$content = $('#content');
$footer = $('#footer-text');
$gistId = $('#gist-id');
$editor = $('#editor');
$editButton = $('#edit-button');
$saveButton = $('#save-button');
$footerWrapper = $('#footer');
$gistId.keydown(gist.readSourceId);
});
function getAsciidoctorOptions(overrides, urlOverrides, extraOptions) {
var attributes = $.extend({}, ASCIIDOCTOR_DEFAULT_ATTRIBUTES, urlOverrides, overrides);
var attributeList = [];
for (var key in attributes) {
if (attributes.hasOwnProperty(key)) {
attributeList.push(key + '=' + attributes[key]);
}
}
var opts = $.extend({
'to_file': false,
'safe': 'secure',
'attributes': attributeList
}, extraOptions);
return Opal.hash(opts);
}
function getUrlAttributes() {
// from http://stackoverflow.com/a/2880929/36710
var attributes = {};
var match,
pl = /\+/g, // Regex for replacing addition symbol with a space
search = /([^&=]+)=?([^&]*)/g,
decode = function (s) {
return decodeURIComponent(s.replace(pl, ' '));
},
query = window.location.search.substring(1);
var first = undefined;
while (match = search.exec(query)) {
if (!first) {
first = decode(match[1]);
} else {
attributes[decode(match[1])] = decode(match[2]);
}
}
if (!first) {
first = '';
}
return {'id': first, 'attributes': attributes};
}
function preProcess(content, options) {
var preOptions = {};
var highlighter = undefined;
var sourceLanguage = undefined;
var doc = Opal.Asciidoctor.$load(content, getAsciidoctorOptions(undefined, undefined, {'parse_header_only': true}));
var attributes = doc.attributes;
var attributeOverrides = {};
preOptions['attributes'] = attributes;
preOptions['document'] = doc;
// merge urlAttributes into attributes
for (var key in urlAttributes) {
if (!urlAttributes.hasOwnProperty(key)) {
continue;
}
if (key.charAt(0) === '!') {
attributes.$delete(key.slice(1));
} else if (key.slice(-1) === '!') {
attributes.$delete(key.slice(0, -1));
} else {
attributes.$delete('!' + key);
attributes.$delete(key + '!');
}
attributes.$store(key, urlAttributes[key]);
}
var stylesheet = '';
if (attributes['$has_key?']('stylesheet')) {
stylesheet = attributes.$fetch('stylesheet');
if (attributes['$has_key?']('stylesdir')) {
var stylesdir = attributes.$fetch('stylesdir');
if (stylesdir) {
if (stylesdir.slice(-1) !== '/') {
stylesdir += '/';
}
stylesheet = stylesdir + stylesheet;
}
}
}
preOptions['stylesheet'] = stylesheet;
preOptions['hasDarkSourceBlocks'] = $.inArray(stylesheet, THEMES_WITH_DARK_SOURCE_BLOCKS) !== -1;
if (attributes['$has_key?']('source-highlighter')) {
highlighter = attributes.$fetch('source-highlighter').toLowerCase();
if ($.inArray(highlighter, UNAVAILABLE_HIGHLIGHTERS) !== -1) {
console.log('Syntax highlighter not supported by DocGist: "' + highlighter + '", using "' + DEFAULT_HIGHLIGHTER + '" instead.');
attributeOverrides['source-highlighter'] = DEFAULT_HIGHLIGHTER;
highlighter = DEFAULT_HIGHLIGHTER;
}
} else {
attributeOverrides['source-highlighter'] = DEFAULT_HIGHLIGHTER;
highlighter = DEFAULT_HIGHLIGHTER;
}
preOptions['highlighter'] = highlighter;
if (attributes['$has_key?']('source-language')) {
sourceLanguage = attributes.$fetch('source-language').toLowerCase();
} else if (attributes['$has_key?']('language')) {
sourceLanguage = attributes.$fetch('language').toLowerCase();
}
preOptions['sourceLanguage'] = sourceLanguage;
if ('imageBaseLocation' in options || 'siteBaseLocation' in options) {
if (attributes['$has_key?']('imagesdir')) {
// only alter relative values, not URLs
var imagesdir = attributes.$fetch('imagesdir');
if (imagesdir.slice(-1) === '/') {
// root-relative URL
if ('siteBaseLocation' in options) {
attributeOverrides['imagesdir'] = options['siteBaseLocation'] + imagesdir;
}
} else if ('imageBaseLocation' in options && imagesdir.substr(0, 4) !== 'http') {
// relative URL
attributeOverrides['imagesdir'] = options['imageBaseLocation'] + '/' + imagesdir;
}
} else if ('imageBaseLocation' in options) {
// default to the same location as the document
attributeOverrides['imagesdir'] = options['imageBaseLocation'];
}
}
preOptions['asciidoctorOptions'] = getAsciidoctorOptions(attributeOverrides, urlAttributes);
return preOptions;
}
var JAVASCRIPT_HREF = /^\s*javascript\s*:/i;
function sanitizeAndInjectHtml(html) {
var items = $.parseHTML(html);
for (var i = items.length; i--;) {
if (items[i].nodeType === 1) {
clean(items[i]);
var nestedItems = items[i].getElementsByTagName('*');
for (var j = nestedItems.length; j--;) {
clean(nestedItems[j]);
}
}
}
$content.empty();
$content.append(items);
function clean(element) {
for (var i = element.attributes.length; i--;) {
var attrib = element.attributes[i];
if (attrib.name.slice(0, 2) === 'on') {
element.removeAttribute(attrib.name);
} else if (attrib.name === 'href' && JAVASCRIPT_HREF.test(attrib.value)) {
element.removeAttribute(attrib.name);
}
}
}
}
var executedOnce = false;
function renderContent(content, options, fromEditor) {
var html, preOptions, attributes;
var mathJaxConfigured = false;
if (fromEditor) {
initFromUrl();
}
try {
preOptions = preProcess(content, options);
attributes = preOptions['attributes'];
html = Opal.Asciidoctor.$convert(content, preOptions['asciidoctorOptions']);
}
catch (e) {
errorMessage(e.name + ':' + '<p>' + e.message + '</p>' + '<p>' + e.fileName + ':' + e.lineNumber + ':'
+ e.columnNumber + '</p>' + '<pre>' + e.stack + '</pre>'
);
return;
}
$(document).ready(function () {
if (attributes['$has_key?']('no-header-footer')) {
$('#main-menu').css('display', 'none');
}
if (preOptions['stylesheet']) {
var $themeStylesheet = $('#theme-stylesheet');
if ($themeStylesheet.attr('href') !== preOptions['stylesheet']) {
$themeStylesheet.attr('href', preOptions['stylesheet']);
}
}
sanitizeAndInjectHtml(html);
$gistId.val('');
postProcess($content, options, preOptions);
addMetadataToFooter(attributes);
if (!mathJaxConfigured) {
MathJax.Hub.Configured();
mathJaxConfigured = true;
}
MathJax.Hub.Queue(['Typeset', MathJax.Hub, $content.get(0)]);
if ('sourceUrl' in options) {
$('#gist-link').attr('href', options['sourceUrl']).parent().removeClass('disabled');
}
share();
if (fromEditor) {
editor.setPreOptions(preOptions);
return;
}
if (executedOnce) {
return;
}
executedOnce = true;
loadHighlightMenu(preOptions['highlighter']);
loadThemeMenu(preOptions['stylesheet']);
loadAttributesMenu();
if (!editor) {
editor = new Editor();
}
editor.setPreOptions(preOptions);
loadNewMenu(content, options, setupEditMode);
if ('editor' in options) {
setupEditMode(options);
}
function setupEditMode(optionsToUse, click) {
var editorModeInProgress = false;
$editButton.click(function (e) {
e.stopImmediatePropagation();
e.preventDefault();
if (!editorModeInProgress) {
editorModeInProgress = true;
if ($editButton.hasClass('active')) {
$editButton.removeClass('active');
$saveButton.children('span').text('Save');
editor.unload(optionsToUse, editorModeDone);
} else {
$editButton.addClass('active');
if (optionsToUse['editor'] === 'firepad') {
$saveButton.children('span').text('Saved continuously');
} else if (optionsToUse['editor'] === 'gist') {
$saveButton.children('span').text('Save');
}
editor.load(optionsToUse, editorModeDone);
}
} else {
// ignore clicks until we're done
}
function editorModeDone() {
editorModeInProgress = false;
}
}).removeClass('disabled');
if (click) {
$editButton.click();
}
}
if ('save' in options) {
$saveButton.click(function () {
editor.save(options);
}).parent().removeClass('disabled');
}
});
}
function postProcess($content, options, preOptions) {
var attributes = preOptions['attributes'];
if ('imageContentReplacer' in options) {
options['imageContentReplacer']($content);
}
// not only going by id here is due to
// https://github.com/asciidoctor/asciidoctor/issues/1582
// a fix should be in 1.5.4
$('div.toc').each(function () {
var $toc = $(this);
if ($toc.children('ul').length === 0) {
$toc.hide();
}
});
if (!attributes['$has_key?']('experimental!')) {
transformButtons($content);
}
if ('highlighter' in preOptions && !attributes['$has_key?']('no-highlight')) {
applyHighlighting(preOptions['highlighter'], preOptions['sourceLanguage'], preOptions['hasDarkSourceBlocks']);
}
tabTheSource($content);
// fix root-relative locations
if ('siteBaseLocation' in options) {
$('img[src ^= "/"]', $content).each(function () {
this.src = options['siteBaseLocation'] + this.getAttribute('src');
});
$('a[href ^= "/"]', $content).each(function () {
this.href = options['siteBaseLocation'] + this.getAttribute('href');
});
}
if ('interXrefReplacer' in options || 'includeReplacer' in options) {
$('a[href]', $content).each(function () {
var href = this.getAttribute('href');
if (href.length) {
if ('interXrefReplacer' in options) {
options['interXrefReplacer'](this, href);
}
if ('includeReplacer' in options) {
options['includeReplacer'](this, href);
}
}
});
}
if (preOptions['stylesheet'] === 'style/iconic.css') {
$('h1').css('margin-bottom', '3rem');
$('.paragraph.lead > p, #preamble > .sectionbody > .paragraph:first-of-type p').css('color', 'inherit');
}
setPageTitle(preOptions['document']);
}
function loadNewMenu(content, options, setupFunc) {
$('#new-empty').click(function () {
loadNewEditor();
});
$('#new-copy').click(function () {
options['new-firepad-content'] = content;
loadNewEditor();
});
function loadNewEditor() {
var myId = id ? id : '';
var buffer = new Array(16);
uuid.v4(null, buffer);
var base62 = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
var bs62 = baseX(base62);
var tmpId = bs62.encode(buffer);
historyTransition(myId, 'fp-' + tmpId);
options['editor'] = 'firepad';
setupFunc(options, true);
}
window.onpopstate = function (event) {
if ('state' in event && typeof event.state === 'string') {
window.location.assign(event.state);
}
};
}
function historyTransition(oldId, newId) {
window.history.replaceState('?' + oldId, null, '?' + oldId);
window.history.pushState('?' + newId, null, '?' + newId);
id = newId;
}
function isLocalStorageWritable() {
try {
var storage = window.localStorage;
var tmp = '__storage_test__';
storage.setItem(tmp, tmp);
storage.removeItem(tmp);
return true;
}
catch (e) {
return false;
}
}
function Editor() {
var asciidoctorOptions;
var $contentWrapper = $('#content-wrapper');
var $editorWrapper = $('#editor-wrapper');
var showcomments;
var firebase;
var firepad;
var content;
var originalContent;
var startTime;
var cm;
var ghToken;
var ghUsername;
var ghScope;
var userId;
var ghAuthExpires;
var preOptions;
var onChangesFunc;
var timeout;
function setPreOptions(preOpts) {
preOptions = preOpts;
asciidoctorOptions = preOptions['asciidoctorOptions'];
showcomments = preOptions['attributes']['$has_key?']('showcomments');
}
function readGithubAuthData() {
if (useLocalStorage) {
var storage = window.localStorage;
if ('ghAuthExpires' in storage && Date.now() / 1000 + 3600 < storage['ghAuthExpires']) {
userId = storage['userId'];
ghUsername = storage['ghUsername'];
ghToken = storage['ghToken'];
ghScope = storage['ghScope'];
ghAuthExpires = storage['ghAuthExpires'];
}
}
}
function writeGithubAuthData() {
if (useLocalStorage) {
var storage = window.localStorage;
storage['userId'] = userId;
storage['ghUsername'] = ghUsername;
storage['ghToken'] = ghToken;
storage['ghScope'] = ghScope;
storage['ghAuthExpires'] = ghAuthExpires;
}
}
function load(options, doneFunc) {
$contentWrapper.addClass('editing');
if (showcomments) {
$contentWrapper.addClass('showcomments');
}
$editorWrapper.addClass('editing');
$footerWrapper.hide();
cm = CodeMirror.fromTextArea($editor.get(0), {
'mode': 'asciidoc',
'theme': 'elegant',
'lineWrapping': true,
'autofocus': true,
'lineNumbers': true
});
if (typeof firebase === 'undefined') {
firebase = new Firebase(window.FIREBASE_URL);
}
Firebase.goOnline();
readGithubAuthData();
var scope = undefined;
var scopeDef = undefined;
if (options['editor'] === 'gist') {
scope = {'scope': 'gist'};
scopeDef = 'gist';
} else {
scope = {};
scopeDef = 'default';
}
if (userId && (ghScope === 'gist' || ghScope === scopeDef)) {
initializeEditor();
} else {
performAuth(firebase, options['editor'], scope, successGithub, successFirebase, fail);
}
function successGithub(auth) {
ghUsername = auth.github.username;
ghToken = auth.github.accessToken;
userId = ghUsername;
ghAuthExpires = auth.expires;
ghScope = scopeDef;
writeGithubAuthData();
initializeEditor();
}
function successFirebase(auth) {
userId = auth.uid;
initializeEditor();
}
function fail(message, err) {
console.log(message, err);
}
function performAuth(fireb, editor, scope, succGithub, succFireb, fail) {
fireb.authWithOAuthPopup('github', function (ghError, ghAuthData) {
if (ghError) {
if (editor === 'gist') {
fail('GitHub login failed!', ghError);
} else {
fireb.authAnonymously(function (error, authData) {
if (error) {
fail('Anonymous login Failed!', error);
} else {
succFireb(authData);
}
});
}
} else {
succGithub(ghAuthData);
}
}, scope);
}
function initializeEditor() {
if (options['editor'] === 'firepad') {
initializeFirepad(userId);
} else if (options['editor'] === 'gist') {
setupRenderingOnChanges();
cm.setValue(originalContent = options['gist-content']);
} else {
console.log('Unknown editor: ' + options['editor']);
}
}
function initializeFirepad(userId) {
firepad = Firepad.fromCodeMirror(firebase.child(id.slice(3)), cm, {
'defaultText': '= DocGist collaborative AsciiDoc editor\n\n' +
'TIP: Share the URL with others to collaborate!',
'userId': userId
});
firepad.on('ready', function () {
if ('new-firepad-content' in options && firepad.isHistoryEmpty()) {
firepad.setText(options['new-firepad-content']);
}
$('a.powered-by-firepad').remove();
});
setupRenderingOnChanges();
}
function setupRenderingOnChanges() {
var timeDiff = 1;
var MAGIC_PERFORMANCE_FACTOR = 2;
cm.on('changes', renderOnChanges);
function renderOnChanges() {
if (typeof timeout === 'undefined') {
var wait = timeDiff * MAGIC_PERFORMANCE_FACTOR;
timeout = setTimeout(function () {
clearTimeout(timeout);
timeout = undefined;
timeDiff = renderEditorContent(showcomments, options);
console.log(Math.floor(timeDiff));
}, wait);
}
}
onChangesFunc = renderOnChanges;
if (typeof doneFunc === 'function') {
doneFunc();
}
}
}
function renderEditorContent(showcomments, options) {
startTime = performance.now();
content = originalContent = cm.getValue();
if (showcomments) {
content = content.replace(/^\/\/\s*?(\w*?):\s*?(.*?)$/gm, function (match, name, comment) {
comment = $.trim(comment);
if (name) {
if (comment === '') {
return '[.commenter]#' + name + '#';
} else {
return '[.commenter]#' + name + '# [.comment]#[.commenter]_' + name + '_ ' + comment + '#';
}
} else {
return '[.comment]#' + comment + '#';
}
});
}
renderContent(content, options, true);
return performance.now() - startTime;
}
function unload(options, doneFunc) {
cm.off('changes', onChangesFunc);
if (typeof timeout !== 'undefined') {
clearTimeout(timeout);
timeout = undefined;
}
if (showcomments) {
renderContent(content, options);
}
if (options['editor'] === 'gist') {
options['gist-content'] = originalContent;
}
if (firepad) {
firepad.dispose();
firepad = undefined;
Firebase.goOffline();
}
$contentWrapper.removeClass('editing');
$contentWrapper.removeClass('showcomments');
$editorWrapper.removeClass('editing');
$editorWrapper.children('.CodeMirror').remove();
cm = undefined;
$footerWrapper.show();
if (typeof doneFunc === 'function') {
doneFunc();
}
}
function save(options) {
if (typeof options['save'] === 'function') {
options['save'](ghUsername, ghToken, originalContent, function (result) {
if ('newId' in result) {
historyTransition(id, result['newId']);
}
if ('sourceUrl' in result) {
$('#gist-link').attr('href', result['sourceUrl']);
}
});
}
}
return {
'load': load,
'unload': unload,
'save': save,
'setPreOptions': setPreOptions
}
}
function addMetadataToFooter(attributes) {
if (attributes['$has_key?']('no-header-footer')) {
$footer.css('display', 'none');
return;
} else {
$footer.css('display', 'block');
}
var $ITEM = $('<i/>');
var $SPAN = $('<span/>');
$footer.empty();
function addMetadataItem(keys, description, icon, valueTransformers) {
var iconAdded = false;
for (var ix = 0; ix < keys.length; ix++) {
var key = keys[ix];
if (attributes['$has_key?'](key)) {
var value = attributes.$fetch(key);
if (icon && !iconAdded) {
iconAdded = true;
$footer.append($ITEM.clone().addClass('fa fa-' + icon).prop('title', description));
}
var $span = $SPAN.clone().text(value);
if ($.isArray(valueTransformers)) {
for (var i = 0; i < valueTransformers.length; i++) {
valueTransformers[i](value, $span);
}
}
$footer.append($span);
}
}
}
function wrapInEmail(key) {
return function (value, $element) {
if (attributes['$has_key?'](key)) {
var address = attributes.$fetch(key);
$element.wrapInner('<a href="mailto:' + address + '">');
}
};
}
function wrapInLinkWithValue(baseUrl) {
return function (value, $element) {
$element.wrapInner('<a href="' + baseUrl + value + '">');
};
}
function wrapInLink(baseUrl) {
return function (value, $element) {
$element.wrapInner('<a href="' + baseUrl + '">');
};
}
function prepend(str) {
return function (value, $element) {
$element.text(str + value);
};
}
if (attributes['$has_key?']('authorcount')) {
var authorCount = attributes.$fetch('authorcount');
if (authorCount === 1) {
addMetadataItem(['author'], 'Author', 'user', [wrapInEmail('email')]);
} else {
var first = true;
for (var authorIndex = 1; authorIndex <= authorCount; authorIndex++) {
addMetadataItem(['author_' + authorIndex], 'Author', (first ? 'user' : false), [wrapInEmail('email_' + authorIndex)]);
first = false;
}
}
}
addMetadataItem(['twitter'], 'Twitter', 'twitter', [wrapInLinkWithValue('https://twitter.com/')]);
addMetadataItem(['github'], 'GitHub', 'github', [wrapInLinkWithValue('https://github.com/')]);
addMetadataItem(['revnumber', 'revdate', 'revremark'], 'Version', 'thumb-tack');
addMetadataItem(['tags', 'keywords'], 'Tags/Keywords', 'tags');
addMetadataItem(['asciidoctor-version'], 'Powered by', 'bolt', [prepend('Asciidoctor '), wrapInLink('http://asciidoctor.org/')]);
addMetadataItem(['env'], 'Powered by', 'pencil-square-o', [wrapInLink(window.location.href)]);
}
function transformButtons($content) {
var $BUTTON = $('<button class="btn btn-default btn-xs" type="buton"/>');
$('b.button', $content).each(function () {
var $old = $(this);
var text = $old.text();
var $new = $BUTTON.clone().text(text);
$old.replaceWith($new);
});
}
function tabTheSource($content) {
var $UL = $('<ul class="nav nav-tabs" role="tablist"/>');
var $LI = $('<li role="presentation"/>');
var $A = $('<a role="tab" data-toggle="tab" style="text-decoration:none;"/>');
var $WRAPPER = $('<div class="tab-content content"/>');
var snippets = [];
var languageEventElements = {};
$('div.tabbed-example', $content).each(function () {
var $exampleBlock = $(this);
var title = $exampleBlock.children('div.title', this).first().text();
var languages = [];
var $languageBlocks = {};
$('div.listingblock', this).each(function () {
var language = $('code', this).data('lang');
languages.push(language);
$languageBlocks[language] = $(this);
});
if (languages.length > 1) {
snippets.push({
'$exampleBlock': $exampleBlock,
'languages': languages,
'$languageBlocks': $languageBlocks
});
}
});
var idNum = 0;
for (var ix = 0; ix < snippets.length; ix++) {
var snippet = snippets[ix];
var languages = snippet.languages;
var $languageBlocks = snippet.$languageBlocks;
var $exampleBlock = snippet.$exampleBlock;
var idBase = 'tabbed-example-' + idNum++;
var $wrapper = $WRAPPER.clone();
var $ul = $UL.clone();
for (var i = 0; i < languages.length; i++) {
var language = languages[i];
var $langContent = $($languageBlocks[language]);
var id;
if ($langContent.attr('id')) {
id = $langContent.attr('id');
} else {
id = idBase + '-' + language;
$langContent.attr('id', id);
}
$langContent.addClass('tab-pane').css('position', 'relative');
var $li = $LI.clone();
var $a = $A.clone();
$a.attr('href', '#' + id).text(language).data('lang', language).on('shown.bs.tab', function (e) {
var language = $(e.target).data('lang');
var $elements = languageEventElements[language];
for (var j = 0; j < $elements.length; j++) {
$elements[j].tab('show');
}
});
if (language in languageEventElements) {
languageEventElements[language].push($a);
} else {
languageEventElements[language] = [$a];
}
$wrapper.append($langContent);
if (i === 0) {
$li.addClass('active');
$langContent.addClass('active');
}
$li.append($a);
$ul.append($li);
}
$exampleBlock.children('div.content').first().replaceWith($ul);
$exampleBlock.append($wrapper);
}
}
function setPageTitle(doc) {
document.title = doc.$doctitle(Opal.hash({'sanitize': true, 'use_fallback': true}));
if (useLocalStorage) {
var $LI = $('<li/>');
var $A = $('<a href="javascript:;" target="_blank"/>');
var items = undefined;
if (window.localStorage.recent) {
items = window.localStorage.recent.split('|');
} else {
items = [];
}
var newItems = encode(id, document.title);
var $menu = $('#file-menu');
for (var i = 0; i < items.length; i++) {
var item = decode(items[i]);
if (item.id !== id) {
newItems += '|' + items[i];
}
var $a = $A.clone().text(item.title).attr('href', '?' + item.id);
$LI.clone().append($a).appendTo($menu);
}
window.localStorage.recent = newItems;
}
function encode(id, title) {
return encodeURIComponent(id) + '#' + encodeURIComponent(title);
}
function decode(item) {
var parts = item.split('#');
return {'id': decodeURIComponent(parts[0]), 'title': decodeURIComponent(parts[1])};
}
}
function share() {
var title = document.title;
var href = encodeURIComponent(window.location.href);
$('#twitter-share').attr('href',
'https://twitter.com/intent/tweet?text=' + encodeURIComponent('Check this out: ' + title) + '&url=' + href);
$('#facebook-share').attr('href', 'http://www.facebook.com/share.php?u=' + href);
$('#google-plus-share').attr('href', 'https://plus.google.com/share?url=' + href);
}
function getUrlWithAttributes(toAdd, toRemove) {
var url = '?';
// we treat the id as separate from the attributes
url += id ? id : DEFAULT_SOURCE;
// add back existing attributes minus ones we want to get rid of
for (var key in urlAttributes) {
if (urlAttributes.hasOwnProperty(key) && keyToKeep(key)) {
url += '&' + encodeURIComponent(key) + '=' + encodeURIComponent(urlAttributes[key]);
}
}
// add attributes we want added
for (var keyToAdd in toAdd) {
if (toAdd.hasOwnProperty(keyToAdd)) {
url += '&' + encodeURIComponent(keyToAdd) + '=' + encodeURIComponent(toAdd[keyToAdd]);
}
}
// always add back the hash
url += window.location.hash;
// resolve relative url to absolute
var a = document.createElement('a');
a.href = url;
return a.href;
function keyToKeep(key) {
if (key in toAdd || $.inArray(key, toRemove) !== -1) {
return false;
}
if (key.slice(-1) === '!') {
var keyWithoutNegation = key.slice(0, -1);
if (keyWithoutNegation in toAdd || $.inArray(keyWithoutNegation, toRemove) !== -1) {
return false;
}
} else {
var keyPlusNegation = key + '!';
if (keyPlusNegation in toAdd || $.inArray(keyPlusNegation, toRemove) !== -1) {
return false;
}
}
return true;
}
}
function applyHighlighting(highlighter, sourceLanguage, hasDarkSourceBlocks) {
var AVAILABLE_HIGHLIGHTERS = {
'highlightjs': highlightUsingHighlightjs,
'highlight.js': highlightUsingHighlightjs,
'prettify': highlightUsingPrettify,
'codemirror': highlightUsingCodeMirror
};
if (sourceLanguage) {
$('code.src', $content).each(function () {
$(this).data('lang', sourceLanguage).addClass('src-' + sourceLanguage).removeClass('src');
});
}
if (highlighter in AVAILABLE_HIGHLIGHTERS) {
AVAILABLE_HIGHLIGHTERS[highlighter](hasDarkSourceBlocks);
} else {
console.log('Unknown syntax highlighter "' + highlighter + '", using "' + DEFAULT_HIGHLIGHTER + '" instead.');
// not in IE8
if ('keys' in Object) {
console.log('Recognized highlighter names: ' + Object.keys(AVAILABLE_HIGHLIGHTERS));
}
AVAILABLE_HIGHLIGHTERS[DEFAULT_HIGHLIGHTER](hasDarkSourceBlocks);
}
}
function highlightUsingPrettify(hasDarkSourceBlocks) {
$('link.dark').attr('disabled', !hasDarkSourceBlocks);
$('code[class^="language-"],code[class^="src-"]', $content).each(function (i, e) {
e.className = e.className.replace('src-', 'language-') + ' prettyprint';
});
window.PR.prettyPrint();
}
function highlightUsingCodeMirror(hasDarkSourceBlocks) {
CodeMirror.colorize(undefined, undefined, hasDarkSourceBlocks);
}