import {htmlToDom} from '../services/dom.ts';
import {debounce} from '../services/util.ts';
import {KeyboardNavigationHandler} from '../services/keyboard-navigation.ts';
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 = '';
}
}