website-theme/static/js/search.js
2018-11-02 02:17:26 +09:00

99 lines
2.7 KiB
JavaScript

var fuse
/**
* Preparation for searching
*/
function initSearch () {
$.getJSON('index.json').done(function (index) {
var options = {
shouldSort: true,
tokenize: true,
matchAllTokens: true,
threshold: 0.3,
minMatchCharLength: 5,
keys: ['title', 'body']
}
fuse = new Fuse(index, options)
}).fail(function (jqxhr, textStatus, error) {
var err = textStatus + ', ' + error
console.error('Error getting Hugo index flie:', err)
})
}
/**
* Setup UI for Search
*/
function initUI () {
// Clear query when clear icon is clicked
$('#searchBoxIcon').click(function () {
$('#searchBox').val('')
$('#searchBox').trigger('keyup')
})
// Event when chenging query
$('#searchBox').keyup(function () {
var $searchResults = $('#searchResults')
var query = $(this).val().trim()
// Icon switching
if (query.length) {
$('#searchBoxIcon').attr('src', '/img/clear.png')
$('#searchBoxIcon').css('cursor', 'pointer')
} else {
$('#searchBoxIcon').attr('src', '/img/search.png')
$('#searchBoxIcon').css('cursor', 'default')
}
// Only trigger a search when 2 chars. at least have been provided
if (query.length < 2) {
$searchResults.hide()
return
}
// Display search results
renderResults(fuse.search(query))
$searchResults.show()
})
// Emit keyup event for when the query is already setted with browser back etc.
$('#searchBox').trigger('keyup')
}
/**
* Rendering search results
* @param {Object[]} results Array of search results
*/
function renderResults (results) {
var $searchResults = $('#searchResults')
var query = $('#searchBox').val()
var SUMMARY_INCLUDE = 50
var MAX_PAGES = 10
// Clear search result
$searchResults.empty()
// Show message when results is empty
if (!results.length) {
$searchResults.append('<div class="searchResultPage">No results found for query "' + query + '"</div>')
return
}
// Only show the ten first results
results.slice(0, MAX_PAGES).forEach(function (result, idx) {
var $searchResultPage = $('<div class="searchResultPage">')
var matchPosition = result.body.indexOf(query.split(' ')[0])
var bodyStartPosition = matchPosition - SUMMARY_INCLUDE > 0 ? matchPosition - SUMMARY_INCLUDE : 0
$searchResultPage.append('<a class="searchResultTitle" href="' + result.ref + '">' + result.title + '</a>')
$searchResultPage.append('<div class="searchResultBody">' + result.body.substr(bodyStartPosition, SUMMARY_INCLUDE * 2) + '</div>')
$searchResults.append($searchResultPage)
// Highlight keyword
$('#searchResults').mark(query)
})
}
initSearch()
$(function () {
initUI()
})