git.iko.soy/urbit.org
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urbit.org/static/scripts.js
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1//
2 // styling of input fields
3//
5var inputElements = document.querySelectorAll('input.tlon-input');
6for (var i = 0; i < inputElements.length; i++) {
7 //listen for changes in input
8 inputElements[i].addEventListener('input', function() {
9 // if input has a value do this
10 if (this.value) {
11 var inputContainer = this.parentNode;
12 var validInputs = inputContainer.querySelectorAll('input.tlon-input:valid');
13 var inputs = inputContainer.querySelectorAll('input.tlon-input');
14 if (validInputs.length !== 0) {
15 // has valid input
16 for (var i = 0; i < validInputs.length; i++) {
17 if (this.classList.contains('is-valid') == false ) {
18 validInputs[i].parentNode.classList.add('has-valid-input');
19 }
20 }
21 } else {
22 // doesn't have valid input
23 for (var i = 0; i < inputs.length; i++) {
24 inputs[i].parentNode.classList.remove('has-valid-input');
25 }
26 }
27 } else {
28 this.parentNode.classList.remove('has-valid-input');
29 }
30 });
33//
34 // toggling of navigation menus
35//
37var toggleMainNav = document.getElementById('js-main-nav-toggle');
38if (toggleMainNav !== null) {
39 toggleMainNav.onclick = function() {
40 document.body.classList.toggle('has-active-main-nav');
41 }
44var toggleContentNav = document.getElementById('js-content-nav-toggle');
45if (toggleContentNav !== null) {
46 toggleContentNav.onclick = function() {
47 document.body.classList.toggle('has-active-content-nav');
48 }
51/*function initToggleMenu() {
52 var menu = document.querySelector(".menu");
53 var menuIcon = document.querySelector(".menu-icon");
54 var page = document.querySelector(".page");
55 menuIcon.addEventListener("click", function() {
56 menu.classList.toggle("menu-hidden");
57 page.classList.toggle("page-without-menu");
58 });
59}*/
61function initToggleSearchWindow() {
62 var toggleSearchWindow = document.getElementById('js-search-window-toggle');
63 var bodyEl = document.body;
64 var searchOverlay = document.getElementById('search-overlay');
65 var searchWindow = document.getElementById('search-window');
66 var searchActive = bodyEl.classList.contains('has-active-search-window');
67 if (toggleSearchWindow !== null) {
68 toggleSearchWindow.onclick = function() {
69 bodyEl.classList.toggle('has-active-search-window');
70 }
71 searchOverlay.addEventListener('click', function(e){
72 if (!searchWindow.contains(e.target)){
73 bodyEl.classList.toggle('has-active-search-window');
74 }
75 })
76 }
81//
82 // search functionality
83//
85function debounce(func, wait) {
86 var timeout;
88 return function () {
89 var context = this;
90 var args = arguments;
91 clearTimeout(timeout);
93 timeout = setTimeout(function () {
94 timeout = null;
95 func.apply(context, args);
96 }, wait);
97 };
100// Taken from mdbook
101// The strategy is as follows:
102// First, assign a value to each word in the document:
103// Words that correspond to search terms (stemmer aware): 40
104// Normal words: 2
105// First word in a sentence: 8
106// Then use a sliding window with a constant number of words and count the
107// sum of the values of the words within the window. Then use the window that got the
108// maximum sum. If there are multiple maximas, then get the last one.
109// Enclose the terms in <b>.
110function makeTeaser(body, terms) {
111 var TERM_WEIGHT = 40;
112 var NORMAL_WORD_WEIGHT = 2;
113 var FIRST_WORD_WEIGHT = 8;
114 var TEASER_MAX_WORDS = 17;
116 var stemmedTerms = terms.map(function (w) {
117 return elasticlunr.stemmer(w.toLowerCase());
118 });
119 var termFound = false;
120 var index = 0;
121 var weighted = []; // contains elements of ["word", weight, index_in_document]
123 // split in sentences, then words
124 var sentences = body.toLowerCase().split(". ");
126 for (var i in sentences) {
127 var words = sentences[i].split(" ");
128 var value = FIRST_WORD_WEIGHT;
130 for (var j in words) {
131 var word = words[j];
133 if (word.length > 0) {
134 for (var k in stemmedTerms) {
135 if (elasticlunr.stemmer(word).startsWith(stemmedTerms[k])) {
136 value = TERM_WEIGHT;
137 termFound = true;
138 }
139 }
140 weighted.push([word, value, index]);
141 value = NORMAL_WORD_WEIGHT;
142 }
144 index += word.length;
145 index += 1; // ' ' or '.' if last word in sentence
146 }
148 index += 1; // because we split at a two-char boundary '. '
149 }
151 if (weighted.length === 0) {
152 return body;
153 }
155 var windowWeights = [];
156 var windowSize = Math.min(weighted.length, TEASER_MAX_WORDS);
157 // We add a window with all the weights first
158 var curSum = 0;
159 for (var i = 0; i < windowSize; i++) {
160 curSum += weighted[i][1];
161 }
162 windowWeights.push(curSum);
164 for (var i = 0; i < weighted.length - windowSize; i++) {
165 curSum -= weighted[i][1];
166 curSum += weighted[i + windowSize][1];
167 windowWeights.push(curSum);
168 }
170 // If we didn't find the term, just pick the first window
171 var maxSumIndex = 0;
172 if (termFound) {
173 var maxFound = 0;
174 // backwards
175 for (var i = windowWeights.length - 1; i >= 0; i--) {
176 if (windowWeights[i] > maxFound) {
177 maxFound = windowWeights[i];
178 maxSumIndex = i;
179 }
180 }
181 }
183 var teaser = [];
184 var startIndex = weighted[maxSumIndex][2];
185 for (var i = maxSumIndex; i < maxSumIndex + windowSize; i++) {
186 var word = weighted[i];
187 if (startIndex < word[2]) {
188 // missing text from index to start of `word`
189 teaser.push(body.substring(startIndex, word[2]));
190 startIndex = word[2];
191 }
193 // add <em/> around search terms
194 if (word[1] === TERM_WEIGHT) {
195 teaser.push("<b>");
196 }
197 startIndex = word[2] + word[0].length;
198 teaser.push(body.substring(word[2], startIndex));
200 if (word[1] === TERM_WEIGHT) {
201 teaser.push("</b>");
202 }
203 }
204 teaser.push("…");
205 return teaser.join("");
208function formatSearchResultItem(item, terms) {
209 var li = document.createElement("li");
210 li.classList.add("search-results__item");
211 li.innerHTML = `<a href="${item.ref}">${item.doc.title}</a>`;
212 li.innerHTML += `<div class="search-results__teaser">${makeTeaser(item.doc.body, terms)}</div>`;
213 return li;
216function initSearch() {
217 var searchInput = document.getElementById("search");
218 if (!searchInput) {
219 return;
220 }
222 var searchResults = document.querySelector(".search-results");
223 var searchResultsHeader = document.querySelector(".search-results__header");
224 var searchResultsItems = document.querySelector(".search-results__items");
225 var MAX_ITEMS = 200;
227 var options = {
228 bool: "AND",
229 fields: {
230 title: {boost: 2},
231 body: {boost: 1},
232 }
233 };
234 var currentTerm = "";
235 var index = elasticlunr.Index.load(window.searchIndex);
237 searchInput.addEventListener("keyup", debounce(function() {
238 var term = searchInput.value.trim();
239 if (term === currentTerm || !index) {
240 return;
241 }
242 searchResults.style.display = term === "" ? "none" : "block";
243 searchResultsItems.innerHTML = "";
244 if (term === "") {
245 return;
246 }
248 var results = index.search(term, options).filter(function (r) {
249 return r.doc.body !== "";
250 });
251 if (results.length === 0) {
252 searchResultsHeader.innerText = `No search results for '${term}'.`;
253 return;
254 }
256 currentTerm = term;
257 searchResultsHeader.innerText = `${results.length} search results for '${term}':`;
258 for (var i = 0; i < Math.min(results.length, MAX_ITEMS); i++) {
259 if (!results[i].doc.body) {
260 continue;
261 }
262 searchResultsItems.appendChild(formatSearchResultItem(results[i], term.split(" ")));
263 }
264 }, 150));
267if (document.readyState === "complete" ||
268 (document.readyState !== "loading" && !document.documentElement.doScroll)
269) {
270 initToggleSearchWindow();
271} else {
272 document.addEventListener("DOMContentLoaded", function () {
273 initToggleSearchWindow();
274 initSearch();
275 });