xlnt/docs/source/javascripts/app/_search.js
2017-01-19 08:37:40 -05:00

76 lines
1.8 KiB
JavaScript

//= require ../lib/_lunr
//= require ../lib/_jquery
//= require ../lib/_jquery.highlight
(function () {
'use strict';
var content, searchResults;
var highlightOpts = { element: 'span', className: 'search-highlight' };
var index = new lunr.Index();
index.ref('id');
index.field('title', { boost: 10 });
index.field('body');
index.pipeline.add(lunr.trimmer, lunr.stopWordFilter);
$(populate);
$(bind);
function populate() {
$('h1, h2, h3').each(function() {
var title = $(this);
var body = title.nextUntil('h1, h2, h3');
index.add({
id: title.prop('id'),
title: title.text(),
body: body.text()
});
});
}
function bind() {
content = $('.content');
searchResults = $('.search-results');
$('#input-search').on('keyup', search);
}
function search(event) {
unhighlight();
searchResults.addClass('visible');
// ESC clears the field
if (event.keyCode === 27) this.value = '';
if (this.value) {
var results = index.search(this.value).filter(function(r) {
return r.score > 0.0001;
});
if (results.length) {
searchResults.empty();
$.each(results, function (index, result) {
var elem = document.getElementById(result.ref);
searchResults.append("<li><a href='#" + result.ref + "'>" + $(elem).text() + "</a></li>");
});
highlight.call(this);
} else {
searchResults.html('<li></li>');
$('.search-results li').text('No Results Found for "' + this.value + '"');
}
} else {
unhighlight();
searchResults.removeClass('visible');
}
}
function highlight() {
if (this.value) content.highlight(this.value, highlightOpts);
}
function unhighlight() {
content.unhighlight(highlightOpts);
}
})();