166 lines
3.7 KiB
JavaScript
166 lines
3.7 KiB
JavaScript
var suggestions = document.getElementById('suggestions');
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var userinput = document.getElementById('userinput');
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document.addEventListener('keydown', inputFocus);
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function inputFocus(e) {
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if (e.keyCode === 191 ) {
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e.preventDefault();
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userinput.focus();
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}
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if (e.keyCode === 27 ) {
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userinput.blur();
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suggestions.classList.add('d-none');
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}
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}
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document.addEventListener('click', function(event) {
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var isClickInsideElement = suggestions.contains(event.target);
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if (!isClickInsideElement) {
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suggestions.classList.add('d-none');
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}
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});
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/*
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Source:
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- https://dev.to/shubhamprakash/trap-focus-using-javascript-6a3
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*/
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document.addEventListener('keydown',suggestionFocus);
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function suggestionFocus(e){
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const focusableSuggestions= suggestions.querySelectorAll('a');
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const focusable= [...focusableSuggestions];
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const index = focusable.indexOf(document.activeElement);
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let nextIndex = 0;
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if (e.keyCode === 38) {
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e.preventDefault();
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nextIndex= index > 0 ? index-1 : 0;
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focusableSuggestions[nextIndex].focus();
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}
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else if (e.keyCode === 40) {
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e.preventDefault();
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nextIndex= index+1 < focusable.length ? index+1 : index;
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focusableSuggestions[nextIndex].focus();
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}
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}
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/*
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Source:
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- https://github.com/nextapps-de/flexsearch#index-documents-field-search
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- https://raw.githack.com/nextapps-de/flexsearch/master/demo/autocomplete.html
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*/
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(function(){
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var index = new FlexSearch.Document({
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tokenize: "forward",
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cache: 100,
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document: {
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id: 'id',
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store: [
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"href", "title", "description"
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],
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index: ["title", "description", "content"]
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}
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});
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// Not yet supported: https://github.com/nextapps-de/flexsearch#complex-documents
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/*
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var docs = [
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{{ range $index, $page := (where .Site.Pages "Section" "docs") -}}
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{
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id: {{ $index }},
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href: "{{ .Permalink }}",
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title: {{ .Title | jsonify }},
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description: {{ .Params.description | jsonify }},
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content: {{ .Content | jsonify }}
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},
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{{ end -}}
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];
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*/
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// https://discourse.gohugo.io/t/range-length-or-last-element/3803/2
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{{ $list := (where .Site.Pages "Section" "docs") -}}
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{{ $len := (len $list) -}}
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index.add(
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{{ range $index, $element := $list -}}
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{
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id: {{ $index }},
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href: "{{ .Permalink }}",
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title: {{ .Title | jsonify }},
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description: {{ .Params.description | jsonify }},
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content: {{ .Content | jsonify }}
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})
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{{ if ne (add $index 1) $len -}}
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.add(
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{{ end -}}
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{{ end -}}
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;
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userinput.addEventListener('input', show_results, true);
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suggestions.addEventListener('click', accept_suggestion, true);
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function show_results(){
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var value = this.value;
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var results = index.search(value, { limit: 5, index: ["content"], enrich: true });
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var entry, childs = suggestions.childNodes;
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var i = 0, len = results.length;
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suggestions.classList.remove('d-none');
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results.forEach(function(results) {
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entry = document.createElement('div');
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entry.innerHTML = '<a href><span></span><span></span></a>';
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a = entry.querySelector('a'),
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t = entry.querySelector('span:first-child'),
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d = entry.querySelector('span:nth-child(2)');
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// console.log(results);
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a.href = results.result[i].doc.href;
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t.textContent = results.result[i].doc.title;
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d.textContent = results.result[i].doc.description;
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suggestions.appendChild(entry);
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});
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while(childs.length > len){
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suggestions.removeChild(childs[i])
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}
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}
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function accept_suggestion(){
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while(suggestions.lastChild){
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suggestions.removeChild(suggestions.lastChild);
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}
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return false;
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}
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}());
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