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authorAustin Ziegler <austin@zieglers.ca>2021-12-23 00:59:21 -0500
committerAustin Ziegler <austin@zieglers.ca>2021-12-23 00:59:21 -0500
commit1c6b43d3a392d52a2ef12d031a4ac4a160884a9e (patch)
tree4c36aa64416d8edf8758e9103f276eadfba2b257 /js/search.js
parentdf79aa3f5441f16cf693b7bb4774ac044cd047e7 (diff)
downloaddiff-lcs-1c6b43d3a392d52a2ef12d031a4ac4a160884a9e.tar.gz
Move docs to root of gh-pages sitegh-pages
Diffstat (limited to 'js/search.js')
-rw-r--r--js/search.js110
1 files changed, 110 insertions, 0 deletions
diff --git a/js/search.js b/js/search.js
new file mode 100644
index 0000000..b558ca5
--- /dev/null
+++ b/js/search.js
@@ -0,0 +1,110 @@
+Search = function(data, input, result) {
+ this.data = data;
+ this.input = input;
+ this.result = result;
+
+ this.current = null;
+ this.view = this.result.parentNode;
+ this.searcher = new Searcher(data.index);
+ this.init();
+}
+
+Search.prototype = Object.assign({}, Navigation, new function() {
+ var suid = 1;
+
+ this.init = function() {
+ var _this = this;
+ var observer = function(e) {
+ switch(e.keyCode) {
+ case 38: // Event.KEY_UP
+ case 40: // Event.KEY_DOWN
+ return;
+ }
+ _this.search(_this.input.value);
+ };
+ this.input.addEventListener('keyup', observer);
+ this.input.addEventListener('click', observer); // mac's clear field
+
+ this.searcher.ready(function(results, isLast) {
+ _this.addResults(results, isLast);
+ })
+
+ this.initNavigation();
+ this.setNavigationActive(false);
+ }
+
+ this.search = function(value, selectFirstMatch) {
+ value = value.trim().toLowerCase();
+ if (value) {
+ this.setNavigationActive(true);
+ } else {
+ this.setNavigationActive(false);
+ }
+
+ if (value == '') {
+ this.lastQuery = value;
+ this.result.innerHTML = '';
+ this.result.setAttribute('aria-expanded', 'false');
+ this.setNavigationActive(false);
+ } else if (value != this.lastQuery) {
+ this.lastQuery = value;
+ this.result.setAttribute('aria-busy', 'true');
+ this.result.setAttribute('aria-expanded', 'true');
+ this.firstRun = true;
+ this.searcher.find(value);
+ }
+ }
+
+ this.addResults = function(results, isLast) {
+ var target = this.result;
+ if (this.firstRun && (results.length > 0 || isLast)) {
+ this.current = null;
+ this.result.innerHTML = '';
+ }
+
+ for (var i=0, l = results.length; i < l; i++) {
+ var item = this.renderItem.call(this, results[i]);
+ item.setAttribute('id', 'search-result-' + target.childElementCount);
+ target.appendChild(item);
+ };
+
+ if (this.firstRun && results.length > 0) {
+ this.firstRun = false;
+ this.current = target.firstChild;
+ this.current.classList.add('search-selected');
+ }
+ //TODO: ECMAScript
+ //if (jQuery.browser.msie) this.$element[0].className += '';
+
+ if (isLast) this.result.setAttribute('aria-busy', 'false');
+ }
+
+ this.move = function(isDown) {
+ if (!this.current) return;
+ var next = isDown ? this.current.nextElementSibling : this.current.previousElementSibling;
+ if (next) {
+ this.current.classList.remove('search-selected');
+ next.classList.add('search-selected');
+ this.input.setAttribute('aria-activedescendant', next.getAttribute('id'));
+ this.scrollIntoView(next, this.view);
+ this.current = next;
+ this.input.value = next.firstChild.firstChild.text;
+ this.input.select();
+ }
+ return true;
+ }
+
+ this.hlt = function(html) {
+ return this.escapeHTML(html).
+ replace(/\u0001/g, '<em>').
+ replace(/\u0002/g, '</em>');
+ }
+
+ this.escapeHTML = function(html) {
+ return html.replace(/[&<>]/g, function(c) {
+ return '&#' + c.charCodeAt(0) + ';';
+ });
+ }
+
+});
+