| 1 |
import { findAncestorByClass, debounce } from './utils/helpers'; |
| 2 |
|
| 3 |
const widgetSearchComments = document.querySelectorAll('.ep-widget-search-comments'); |
| 4 |
|
| 5 |
let selectedResultIndex; |
| 6 |
|
| 7 |
widgetSearchComments.forEach((element) => { |
| 8 |
const { id } = element; |
| 9 |
const input = document.createElement('input'); |
| 10 |
input.setAttribute('autocomplete', 'off'); |
| 11 |
input.setAttribute('type', 'search'); |
| 12 |
input.setAttribute('class', 'ep-widget-search-comments-input'); |
| 13 |
input.setAttribute('id', `${id}-s`); |
| 14 |
|
| 15 |
const resultList = document.createElement('ul'); |
| 16 |
resultList.setAttribute('class', 'ep-widget-search-comments-results'); |
| 17 |
|
| 18 |
element.appendChild(input); |
| 19 |
element.appendChild(resultList); |
| 20 |
}); |
| 21 |
|
| 22 |
// these are the keycodes we listen for in handleUpDown, |
| 23 |
// and in handleKeyup |
| 24 |
const keyCodes = [ |
| 25 |
38, // up |
| 26 |
40, // down |
| 27 |
13, // enter |
| 28 |
]; |
| 29 |
|
| 30 |
/** |
| 31 |
* Hide the result list |
| 32 |
* |
| 33 |
* @param {HTMLInputElement} inputElement The input element used in the widget |
| 34 |
*/ |
| 35 |
function hideResultsBox(inputElement) { |
| 36 |
selectedResultIndex = undefined; |
| 37 |
|
| 38 |
const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
| 39 |
const resultList = widget.querySelector('.ep-widget-search-comments-results'); |
| 40 |
|
| 41 |
while (resultList.firstChild) { |
| 42 |
resultList.removeChild(resultList.firstChild); |
| 43 |
} |
| 44 |
} |
| 45 |
|
| 46 |
/** |
| 47 |
* Update the result list |
| 48 |
* |
| 49 |
* @param {object} comments Comments to be showed |
| 50 |
* @param {HTMLInputElement} inputElement The input element used in the widget |
| 51 |
*/ |
| 52 |
const updateResultsBox = (comments, inputElement) => { |
| 53 |
let items = ''; |
| 54 |
let itemHTML = ''; |
| 55 |
|
| 56 |
Object.keys(comments).forEach((id, index) => { |
| 57 |
if (comments[id]?.content && comments[id]?.link) { |
| 58 |
itemHTML = ` |
| 59 |
<li class="ep-widget-search-comments-result-item"> |
| 60 |
<a href="${comments[id].link}"> |
| 61 |
${comments[id].content} |
| 62 |
</a> |
| 63 |
</li> |
| 64 |
`; |
| 65 |
|
| 66 |
if (typeof window.epCommentWidgetItemHTMLFilter !== 'undefined') { |
| 67 |
itemHTML = window.epCommentWidgetItemHTMLFilter( |
| 68 |
itemHTML, |
| 69 |
comments[id], |
| 70 |
index, |
| 71 |
inputElement.value, |
| 72 |
); |
| 73 |
} |
| 74 |
|
| 75 |
items += itemHTML; |
| 76 |
} |
| 77 |
}); |
| 78 |
|
| 79 |
const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
| 80 |
const resultList = widget.querySelector('.ep-widget-search-comments-results'); |
| 81 |
|
| 82 |
if (typeof window.epCommentWidgetItemsHTMLFilter !== 'undefined') { |
| 83 |
items = window.epCommentWidgetItemsHTMLFilter(items, inputElement.value); |
| 84 |
} |
| 85 |
|
| 86 |
resultList.innerHTML = items; |
| 87 |
}; |
| 88 |
|
| 89 |
/** |
| 90 |
* Update the result list to inform the user that no results were found |
| 91 |
* |
| 92 |
* @param {HTMLInputElement} inputElement The input element used in the widget |
| 93 |
*/ |
| 94 |
const showNotFoundInResultsBox = (inputElement) => { |
| 95 |
const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
| 96 |
const resultList = widget.querySelector('.ep-widget-search-comments-results'); |
| 97 |
|
| 98 |
let itemHTML = `<li class="ep-widget-search-comments-result-item-not-found">${window.epc.noResultsFoundText}</li>`; |
| 99 |
|
| 100 |
if (typeof window.epCommentWidgetItemNotFoundHTMLFilter !== 'undefined') { |
| 101 |
itemHTML = window.epCommentWidgetItemNotFoundHTMLFilter( |
| 102 |
itemHTML, |
| 103 |
window.epc.noResultsFoundText, |
| 104 |
inputElement.value, |
| 105 |
); |
| 106 |
} |
| 107 |
|
| 108 |
resultList.innerHTML = itemHTML; |
| 109 |
}; |
| 110 |
|
| 111 |
function hasMinimumLength(inputElement) { |
| 112 |
const minimumLength = window.epc.minimumLengthToSearch || 2; |
| 113 |
return inputElement?.value?.trim().length >= minimumLength; |
| 114 |
} |
| 115 |
|
| 116 |
/** |
| 117 |
* Add class to the widget element while results are being loaded |
| 118 |
* |
| 119 |
* @param {boolean} isLoading Whether results are loading |
| 120 |
* @param {Node} inputElement Search input field |
| 121 |
*/ |
| 122 |
function setIsLoading(isLoading, inputElement) { |
| 123 |
const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
| 124 |
|
| 125 |
if (isLoading) { |
| 126 |
widget.classList.add('ep-widget-search-comments-is-loading'); |
| 127 |
} else { |
| 128 |
widget.classList.remove('ep-widget-search-comments-is-loading'); |
| 129 |
} |
| 130 |
} |
| 131 |
|
| 132 |
/** |
| 133 |
* Fetch comments |
| 134 |
* |
| 135 |
* @param {HTMLInputElement} inputElement The input element used in the widget |
| 136 |
* @returns {(false|Promise)} Try to fetch comments |
| 137 |
*/ |
| 138 |
function fetchResults(inputElement) { |
| 139 |
if (hasMinimumLength(inputElement)) { |
| 140 |
const widget = findAncestorByClass(inputElement, 'ep-widget-search-comments'); |
| 141 |
const postTypeElement = widget.querySelector('.ep-widget-search-comments-post-type'); |
| 142 |
const postTypeQueryParameter = postTypeElement?.value |
| 143 |
? `&post_type=${postTypeElement.value.trim()}` |
| 144 |
: ''; |
| 145 |
|
| 146 |
setIsLoading(true, inputElement); |
| 147 |
return fetch( |
| 148 |
`${window.epc.restApiEndpoint}?s=${inputElement.value.trim()}${postTypeQueryParameter}`, |
| 149 |
) |
| 150 |
.then((response) => { |
| 151 |
if (!response.ok) { |
| 152 |
throw response; |
| 153 |
} |
| 154 |
|
| 155 |
return response.json(); |
| 156 |
}) |
| 157 |
.then((comments) => { |
| 158 |
if (Object.keys(comments).length === 0) { |
| 159 |
if (inputElement.value.trim()) { |
| 160 |
showNotFoundInResultsBox(inputElement); |
| 161 |
} else { |
| 162 |
hideResultsBox(inputElement); |
| 163 |
} |
| 164 |
} else { |
| 165 |
updateResultsBox(comments, inputElement); |
| 166 |
} |
| 167 |
}) |
| 168 |
.catch(() => { |
| 169 |
hideResultsBox(inputElement); |
| 170 |
}) |
| 171 |
.finally(() => { |
| 172 |
setIsLoading(false, inputElement); |
| 173 |
}); |
| 174 |
} |
| 175 |
return false; |
| 176 |
} |
| 177 |
|
| 178 |
/** |
| 179 |
* Handle up, down and enter key |
| 180 |
* |
| 181 |
* @param {Event} event keyup event |
| 182 |
*/ |
| 183 |
const handleUpDownEnter = (event) => { |
| 184 |
if (!keyCodes.includes(event.keyCode)) { |
| 185 |
return; |
| 186 |
} |
| 187 |
|
| 188 |
const widget = findAncestorByClass(event.target, 'ep-widget-search-comments'); |
| 189 |
const resultList = widget.querySelector('.ep-widget-search-comments-results'); |
| 190 |
const sizeResult = resultList.querySelectorAll('.ep-widget-search-comments-result-item').length; |
| 191 |
const results = resultList.children; |
| 192 |
|
| 193 |
const previousSelectedResultIndex = selectedResultIndex; |
| 194 |
|
| 195 |
switch (event.keyCode) { |
| 196 |
case 38: // Up |
| 197 |
selectedResultIndex = |
| 198 |
selectedResultIndex - 1 < 0 || typeof selectedResultIndex === 'undefined' |
| 199 |
? sizeResult - 1 |
| 200 |
: selectedResultIndex - 1; |
| 201 |
|
| 202 |
break; |
| 203 |
|
| 204 |
case 40: // Down |
| 205 |
if ( |
| 206 |
typeof selectedResultIndex === 'undefined' || |
| 207 |
selectedResultIndex + 1 > sizeResult - 1 |
| 208 |
) { |
| 209 |
selectedResultIndex = 0; |
| 210 |
} else { |
| 211 |
selectedResultIndex += 1; |
| 212 |
} |
| 213 |
|
| 214 |
break; |
| 215 |
|
| 216 |
case 13: // Enter |
| 217 |
if (results[selectedResultIndex]?.classList.contains('selected') || sizeResult === 1) { |
| 218 |
const indexItem = selectedResultIndex || 0; |
| 219 |
|
| 220 |
if (results[indexItem]) { |
| 221 |
const linkToComment = results[indexItem] |
| 222 |
.querySelector('a') |
| 223 |
?.getAttribute('href'); |
| 224 |
|
| 225 |
window.location.href = linkToComment; |
| 226 |
} |
| 227 |
} |
| 228 |
|
| 229 |
break; |
| 230 |
|
| 231 |
default: |
| 232 |
break; |
| 233 |
} |
| 234 |
|
| 235 |
if (typeof previousSelectedResultIndex === 'number') { |
| 236 |
results[previousSelectedResultIndex].classList.remove('selected'); |
| 237 |
results[previousSelectedResultIndex].setAttribute('aria-selected', 'false'); |
| 238 |
} |
| 239 |
|
| 240 |
results[selectedResultIndex]?.classList.add('selected'); |
| 241 |
results[selectedResultIndex]?.setAttribute('aria-selected', 'true'); |
| 242 |
}; |
| 243 |
|
| 244 |
const debounceFetchResults = debounce(fetchResults, 500); |
| 245 |
|
| 246 |
/** |
| 247 |
* Callback for keyup in Widget Search Comment container. |
| 248 |
* |
| 249 |
* Calls a debounced function to get the search results via |
| 250 |
* api rest request. |
| 251 |
* |
| 252 |
* @param {event} event - keyup event |
| 253 |
*/ |
| 254 |
const handleKeyup = (event) => { |
| 255 |
event.preventDefault(); |
| 256 |
const { target, key, keyCode } = event; |
| 257 |
|
| 258 |
if (key === 'Escape' || key === 'Esc' || keyCode === 27) { |
| 259 |
hideResultsBox(target); |
| 260 |
target.setAttribute('aria-expanded', false); |
| 261 |
|
| 262 |
return; |
| 263 |
} |
| 264 |
|
| 265 |
if (keyCodes.includes(keyCode) && target.value !== '') { |
| 266 |
handleUpDownEnter(event); |
| 267 |
|
| 268 |
return; |
| 269 |
} |
| 270 |
|
| 271 |
if (hasMinimumLength(target)) { |
| 272 |
debounceFetchResults(target); |
| 273 |
} else { |
| 274 |
hideResultsBox(target); |
| 275 |
} |
| 276 |
}; |
| 277 |
|
| 278 |
widgetSearchComments.forEach((element) => { |
| 279 |
const input = element.querySelector('.ep-widget-search-comments-input'); |
| 280 |
|
| 281 |
input.addEventListener('keyup', handleKeyup); |
| 282 |
input.addEventListener('keydown', (event) => { |
| 283 |
if (event.keyCode === 38) { |
| 284 |
event.preventDefault(); |
| 285 |
} |
| 286 |
}); |
| 287 |
input.addEventListener('blur', function () { |
| 288 |
setTimeout(() => hideResultsBox(input), 200); |
| 289 |
}); |
| 290 |
}); |
| 291 |
|
