1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
var suggestions = document.getElementById('suggestions');
var search = document.getElementById('search');
if (search !== null) {
document.addEventListener('keydown', inputFocus);
}
function inputFocus(e) {
if (e.ctrlKey && e.key === '/' ) {
e.preventDefault();
search.focus();
}
if (e.key === 'Escape' ) {
search.blur();
suggestions.classList.add('d-none');
}
}
document.addEventListener('click', function(event) {
var isClickInsideElement = suggestions.contains(event.target);
if (!isClickInsideElement) {
suggestions.classList.add('d-none');
}
});
/*
Source:
- https://dev.to/shubhamprakash/trap-focus-using-javascript-6a3
*/
document.addEventListener('keydown',suggestionFocus);
function suggestionFocus(e){
const focusableSuggestions= suggestions.querySelectorAll('a');
const focusable= [...focusableSuggestions];
const index = focusable.indexOf(document.activeElement);
const keyDefault = suggestions.classList.contains('d-none');
let nextIndex = 0;
if ((e.keyCode === 38) && (!keyDefault)) {
e.preventDefault();
nextIndex= index > 0 ? index-1 : 0;
focusableSuggestions[nextIndex].focus();
}
else if ((e.keyCode === 40) && (!keyDefault)) {
e.preventDefault();
nextIndex= index+1 < focusable.length ? index+1 : index;
focusableSuggestions[nextIndex].focus();
}
}
/*
Source:
- https://github.com/nextapps-de/flexsearch#index-documents-field-search
- https://raw.githack.com/nextapps-de/flexsearch/master/demo/autocomplete.html
*/
(function(){
var index = new FlexSearch.Document({
tokenize: "forward",
cache: 100,
document: {
id: 'id',
store: [
"href", "title", "description"
],
index: ["title", "description", "content"]
}
});
// Not yet supported: https://github.com/nextapps-de/flexsearch#complex-documents
/*
var docs = [
{{ range $index, $page := (where .Site.Pages "Section" "docs") -}}
{
id: {{ $index }},
href: "{{ .Permalink }}",
title: {{ .Title | jsonify }},
description: {{ .Params.description | jsonify }},
content: {{ .Content | jsonify }}
},
{{ end -}}
];
*/
// https://discourse.gohugo.io/t/range-length-or-last-element/3803/2
{{ $list := (where .Site.Pages "Section" "docs") -}}
{{ $len := (len $list) -}}
index.add(
{{ range $index, $element := $list -}}
{
id: {{ $index }},
href: "{{ .RelPermalink }}",
title: {{ .Title | jsonify }},
description: {{ .Params.description | jsonify }},
content: {{ .Content | jsonify }}
})
{{ if ne (add $index 1) $len -}}
.add(
{{ end -}}
{{ end -}}
;
search.addEventListener('input', show_results, true);
suggestions.addEventListener('click', accept_suggestion, true);
function show_results(){
const maxResult = 5;
var value = this.value;
var results = index.search(value, {limit: maxResult, enrich: true});
suggestions.classList.remove('d-none');
suggestions.innerHTML = "";
//flatSearch now returns results for each index field. create a single list
const flatResults = {}; //keyed by href to dedupe results
results.forEach(result=>{
result.result.forEach(r=>{
flatResults[r.doc.href] = r.doc;
});
});
//construct a list of suggestions list
for(const href in flatResults) {
const doc = flatResults[href];
const entry = document.createElement('div');
entry.innerHTML = '<a href><span></span><span></span></a>';
entry.querySelector('a').href = href;
entry.querySelector('span:first-child').textContent = doc.title;
entry.querySelector('span:nth-child(2)').textContent = doc.description;
suggestions.appendChild(entry);
if(suggestions.childElementCount == maxResult) break;
}
}
function accept_suggestion(){
while(suggestions.lastChild){
suggestions.removeChild(suggestions.lastChild);
}
return false;
}
}());
|
