86 lines
2.1 KiB
JavaScript
86 lines
2.1 KiB
JavaScript
'use strict';
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{{ $searchDataFile := printf "%s.search-data.js" .Language.Lang }}
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{{ $searchData := resources.Get "search-data.js" | resources.ExecuteAsTemplate $searchDataFile . | resources.Minify | resources.Fingerprint }}
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(function() {
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const input = document.querySelector('#book-search-input');
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const results = document.querySelector('#book-search-results');
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input.addEventListener('focus', init);
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input.addEventListener('keyup', search);
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document.addEventListener('keypress', focusSearchFieldOnKeyPress);
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/**
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* @param {Event} event
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*/
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function focusSearchFieldOnKeyPress(event) {
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if (input === document.activeElement) {
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return;
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}
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const characterPressed = String.fromCharCode(event.charCode);
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if (!isHotkey(characterPressed)) {
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return;
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}
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input.focus();
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event.preventDefault();
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}
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/**
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* @param {String} character
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* @returns {Boolean}
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*/
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function isHotkey(character) {
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const dataHotkeys = input.getAttribute('data-hotkeys') || '';
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return dataHotkeys.indexOf(character) >= 0;
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}
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function init() {
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input.removeEventListener('focus', init); // init once
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input.required = true;
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loadScript('{{ "flexsearch.min.js" | relURL }}');
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loadScript('{{ $searchData.RelPermalink }}', function() {
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input.required = false;
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search();
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});
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}
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function search() {
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while (results.firstChild) {
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results.removeChild(results.firstChild);
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}
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if (!input.value) {
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return;
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}
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const searchHits = window.bookSearchIndex.search(input.value, 10);
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searchHits.forEach(function(page) {
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const li = document.createElement('li'),
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a = li.appendChild(document.createElement('a'));
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a.href = page.href;
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a.textContent = page.title;
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results.appendChild(li);
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});
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}
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/**
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* @param {String} src
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* @param {Function} callback
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*/
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function loadScript(src, callback) {
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const script = document.createElement('script');
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script.defer = true;
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script.async = false;
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script.src = src;
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script.onload = callback;
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document.head.appendChild(script);
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}
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})();
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