import {htmlToDom} from '../services/dom'; import {debounce} from '../services/util'; import {KeyboardNavigationHandler} from '../services/keyboard-navigation'; import {Component} from './component'; /** * Global (header) search box handling. * Mainly to show live results preview. */ export class GlobalSearch extends Component { setup() { this.container = this.$el; this.input = this.$refs.input; this.suggestions = this.$refs.suggestions; this.suggestionResultsWrap = this.$refs.suggestionResults; this.loadingWrap = this.$refs.loading; this.button = this.$refs.button; this.setupListeners(); } setupListeners() { const updateSuggestionsDebounced = debounce(this.updateSuggestions.bind(this), 200, false); // Handle search input changes this.input.addEventListener('input', () => { const {value} = this.input; if (value.length > 0) { this.loadingWrap.style.display = 'block'; this.suggestionResultsWrap.style.opacity = '0.5'; updateSuggestionsDebounced(value); } else { this.hideSuggestions(); } }); // Allow double click to show auto-click suggestions this.input.addEventListener('dblclick', () => { this.input.setAttribute('autocomplete', 'on'); this.button.focus(); this.input.focus(); }); new KeyboardNavigationHandler(this.container, () => { this.hideSuggestions(); }); } /** * @param {String} search */ async updateSuggestions(search) { const {data: results} = await window.$http.get('/search/suggest', {term: search}); if (!this.input.value) { return; } const resultDom = htmlToDom(results); this.suggestionResultsWrap.innerHTML = ''; this.suggestionResultsWrap.style.opacity = '1'; this.loadingWrap.style.display = 'none'; this.suggestionResultsWrap.append(resultDom); if (!this.container.classList.contains('search-active')) { this.showSuggestions(); } } showSuggestions() { this.container.classList.add('search-active'); window.requestAnimationFrame(() => { this.suggestions.classList.add('search-suggestions-animation'); }); } hideSuggestions() { this.container.classList.remove('search-active'); this.suggestions.classList.remove('search-suggestions-animation'); this.suggestionResultsWrap.innerHTML = ''; } }