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import { findAncestorByClass, debounce } from './utils/helpers'; |
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|
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const widgetSearchComments = document.querySelectorAll('.ep-widget-search-comments'); |
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|
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let selectedResultIndex; |
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|
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widgetSearchComments.forEach((element) => { |
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const input = document.createElement('input'); |
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input.setAttribute('autocomplete', 'off'); |
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input.setAttribute('type', 'search'); |
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input.setAttribute('class', 'ep-widget-search-comments-input'); |
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|
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const resultList = document.createElement('ul'); |
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resultList.setAttribute('class', 'ep-widget-search-comments-results'); |
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|
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element.appendChild(input); |
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element.appendChild(resultList); |
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}); |
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|
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// these are the keycodes we listen for in handleUpDown, |
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// and in handleKeyup |
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const keyCodes = [ |
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38, // up |
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40, // down |
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13, // enter |
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]; |
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|
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/** |
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* Hide the result list |
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* |
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* @param {HTMLInputElement} inputElement The input element used in the widget |
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*/ |
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function hideResultsBox(inputElement) { |
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selectedResultIndex = undefined; |
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|
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const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
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const resultList = widget.querySelector('.ep-widget-search-comments-results'); |
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|
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while (resultList.firstChild) { |
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resultList.removeChild(resultList.firstChild); |
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} |
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} |
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|
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/** |
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* Update the result list |
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* |
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* @param {object} comments Comments to be showed |
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* @param {HTMLInputElement} inputElement The input element used in the widget |
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*/ |
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const updateResultsBox = (comments, inputElement) => { |
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let items = ''; |
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let itemHTML = ''; |
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|
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Object.keys(comments).forEach((id, index) => { |
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if (comments[id]?.content && comments[id]?.link) { |
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itemHTML = ` |
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<li class="ep-widget-search-comments-result-item"> |
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<a href="${comments[id].link}"> |
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${comments[id].content} |
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</a> |
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</li> |
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`; |
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|
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if (typeof window.epCommentWidgetItemHTMLFilter !== 'undefined') { |
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itemHTML = window.epCommentWidgetItemHTMLFilter( |
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itemHTML, |
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comments[id], |
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index, |
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inputElement.value, |
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); |
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} |
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|
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items += itemHTML; |
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} |
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}); |
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|
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const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
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const resultList = widget.querySelector('.ep-widget-search-comments-results'); |
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|
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if (typeof window.epCommentWidgetItemsHTMLFilter !== 'undefined') { |
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items = window.epCommentWidgetItemsHTMLFilter(items, inputElement.value); |
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} |
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|
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resultList.innerHTML = items; |
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}; |
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|
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/** |
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* Update the result list to inform the user that no results were found |
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* |
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* @param {HTMLInputElement} inputElement The input element used in the widget |
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*/ |
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const showNotFoundInResultsBox = (inputElement) => { |
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const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
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const resultList = widget.querySelector('.ep-widget-search-comments-results'); |
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|
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let itemHTML = `<li class="ep-widget-search-comments-result-item-not-found">${window.epc.noResultsFoundText}</li>`; |
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|
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if (typeof window.epCommentWidgetItemNotFoundHTMLFilter !== 'undefined') { |
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itemHTML = window.epCommentWidgetItemNotFoundHTMLFilter( |
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itemHTML, |
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window.epc.noResultsFoundText, |
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inputElement.value, |
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); |
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} |
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|
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resultList.innerHTML = itemHTML; |
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}; |
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|
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function hasMinimumLength(inputElement) { |
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const minimumLength = window.epc.minimumLengthToSearch || 2; |
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return inputElement?.value?.trim().length >= minimumLength; |
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} |
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|
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/** |
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* Add class to the widget element while results are being loaded |
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* |
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* @param {boolean} isLoading Whether results are loading |
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* @param {Node} inputElement Search input field |
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*/ |
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function setIsLoading(isLoading, inputElement) { |
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const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
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|
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if (isLoading) { |
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widget.classList.add('ep-widget-search-comments-is-loading'); |
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} else { |
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widget.classList.remove('ep-widget-search-comments-is-loading'); |
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} |
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} |
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|
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/** |
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* Fetch comments |
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* |
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* @param {HTMLInputElement} inputElement The input element used in the widget |
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* @returns {(false|Promise)} Try to fetch comments |
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*/ |
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function fetchResults(inputElement) { |
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if (hasMinimumLength(inputElement)) { |
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const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
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const postTypeElement = widget.querySelector('#ep-widget-search-comments-post-type'); |
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const postTypeQueryParameter = postTypeElement?.value |
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? `&post_type=${postTypeElement.value.trim()}` |
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: ''; |
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|
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setIsLoading(true, inputElement); |
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return fetch( |
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`${window.epc.restApiEndpoint}?s=${inputElement.value.trim()}${postTypeQueryParameter}`, |
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) |
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.then((response) => { |
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if (!response.ok) { |
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throw response; |
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} |
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|
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return response.json(); |
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}) |
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.then((comments) => { |
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if (Object.keys(comments).length === 0) { |
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if (inputElement.value.trim()) { |
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showNotFoundInResultsBox(inputElement); |
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} else { |
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hideResultsBox(inputElement); |
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} |
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} else { |
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updateResultsBox(comments, inputElement); |
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} |
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}) |
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.catch(() => { |
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hideResultsBox(inputElement); |
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}) |
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.finally(() => { |
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setIsLoading(false, inputElement); |
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}); |
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} |
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return false; |
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} |
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|
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/** |
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* Handle up, down and enter key |
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* |
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* @param {Event} event keyup event |
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*/ |
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const handleUpDownEnter = (event) => { |
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if (!keyCodes.includes(event.keyCode)) { |
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return; |
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} |
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|
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const widget = findAncestorByClass(event.target, 'ep-widget-search-comments'); |
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const resultList = widget.querySelector('.ep-widget-search-comments-results'); |
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const sizeResult = resultList.querySelectorAll('.ep-widget-search-comments-result-item').length; |
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const results = resultList.children; |
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|
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const previousSelectedResultIndex = selectedResultIndex; |
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|
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switch (event.keyCode) { |
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case 38: // Up |
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selectedResultIndex = |
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selectedResultIndex - 1 < 0 || typeof selectedResultIndex === 'undefined' |
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? sizeResult - 1 |
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: selectedResultIndex - 1; |
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|
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break; |
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|
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case 40: // Down |
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if ( |
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typeof selectedResultIndex === 'undefined' || |
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selectedResultIndex + 1 > sizeResult - 1 |
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) { |
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selectedResultIndex = 0; |
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} else { |
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selectedResultIndex += 1; |
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} |
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|
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break; |
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|
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case 13: // Enter |
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if (results[selectedResultIndex]?.classList.contains('selected') || sizeResult === 1) { |
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const indexItem = selectedResultIndex || 0; |
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|
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if (results[indexItem]) { |
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const linkToComment = results[indexItem] |
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.querySelector('a') |
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?.getAttribute('href'); |
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|
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window.location.href = linkToComment; |
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} |
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} |
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|
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break; |
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|
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default: |
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break; |
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} |
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|
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if (typeof previousSelectedResultIndex === 'number') { |
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results[previousSelectedResultIndex].classList.remove('selected'); |
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results[previousSelectedResultIndex].setAttribute('aria-selected', 'false'); |
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} |
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|
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results[selectedResultIndex]?.classList.add('selected'); |
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results[selectedResultIndex]?.setAttribute('aria-selected', 'true'); |
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}; |
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|
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const debounceFetchResults = debounce(fetchResults, 500); |
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|
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/** |
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* Callback for keyup in Widget Search Comment container. |
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* |
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* Calls a debounced function to get the search results via |
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* api rest request. |
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* |
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* @param {event} event - keyup event |
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*/ |
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const handleKeyup = (event) => { |
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event.preventDefault(); |
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const { target, key, keyCode } = event; |
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|
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if (key === 'Escape' || key === 'Esc' || keyCode === 27) { |
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hideResultsBox(target); |
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target.setAttribute('aria-expanded', false); |
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|
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return; |
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} |
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|
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if (keyCodes.includes(keyCode) && target.value !== '') { |
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handleUpDownEnter(event); |
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|
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return; |
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} |
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|
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if (hasMinimumLength(target)) { |
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debounceFetchResults(target); |
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} else { |
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hideResultsBox(target); |
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} |
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}; |
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|
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widgetSearchComments.forEach((element) => { |
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const input = element.querySelector('.ep-widget-search-comments-input'); |
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|
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input.addEventListener('keyup', handleKeyup); |
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input.addEventListener('keydown', (event) => { |
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if (event.keyCode === 38) { |
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event.preventDefault(); |
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} |
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}); |
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input.addEventListener('blur', function () { |
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setTimeout(() => hideResultsBox(input), 200); |
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}); |
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}); |
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|
