koloml/furbooru-tagging-assistant
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Code Issues Activity

Removing auto-completion logic

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KoloMl
2024-07-05 01:06:11 +04:00
parent d2140c6eee
commit c8eb54ab98
5 changed files with 0 additions and 238 deletions
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7
src/content/header.js
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@@ -1,7 +0,0 @@
import {initializeSiteHeader} from "$lib/components/SiteHeaderWrapper.js";
const siteHeader = document.querySelector('.header');
if (siteHeader) {
initializeSiteHeader(siteHeader);
}

186
src/lib/components/SearchWrapper.js
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@@ -1,186 +0,0 @@
import {BaseComponent} from "$lib/components/base/BaseComponent.js";
import {QueryLexer, QuotedTermToken, TermToken, Token} from "$lib/booru/search/QueryLexer.js";
export class SearchWrapper extends BaseComponent {
/** @type {HTMLInputElement|null} */
#searchField = null;
/** @type {HTMLInputElement|null} */
#autoCompleteField = null;
/** @type {string|null} */
#lastParsedSearchValue = null;
/** @type {Token[]} */
#cachedParsedQuery = [];
build() {
this.container.classList.add('header__search--completable');
this.#searchField = this.container.querySelector('input[name=q]');
this.#searchField.autocomplete = 'off'; // Browser's auto-complete will get in the way!
const autoCompleteField = document.createElement('input');
autoCompleteField.dataset.ac = 'true';
autoCompleteField.dataset.acMinLength = '3';
autoCompleteField.dataset.acSource = '/autocomplete/tags?term=';
autoCompleteField.classList.add('search-autocomplete-dummy');
this.#autoCompleteField = autoCompleteField;
this.container.appendChild(autoCompleteField);
}
init() {
this.#searchField.addEventListener('input', this.#updateAutoCompletedFragment.bind(this));
this.#searchField.addEventListener('keydown', this.#onSearchFieldKeyPressed.bind(this));
this.#searchField.addEventListener('selectionchange', this.#updateAutoCompletedFragment.bind(this));
}
#updateAutoCompletedFragment() {
const searchableFragment = this.#findCurrentTagFragment();
this.#emitAutoComplete(searchableFragment || '');
}
#getInputUserSelection() {
return Math.min(
this.#searchField.selectionStart,
this.#searchField.selectionEnd
);
}
#resolveQueryTokens() {
const searchValue = this.#searchField.value;
if (searchValue === this.#lastParsedSearchValue && this.#cachedParsedQuery) {
return this.#cachedParsedQuery;
}
this.#lastParsedSearchValue = searchValue;
this.#cachedParsedQuery = new QueryLexer(searchValue).parse();
return this.#cachedParsedQuery;
}
/**
* @param {KeyboardEvent} event
*/
#onSearchFieldKeyPressed(event) {
// On enter, attempt to replace the current active tag in the query with autocomplete selection
if (event.code === 'Enter') {
this.#onEnterPressed(event);
}
this.#autoCompleteField.dispatchEvent(
new KeyboardEvent('keydown', {
keyCode: event.keyCode
})
);
// Similarly to the site's autocomplete logic, we need to prevent the arrows up/down from causing any issues
if (event.keyCode === 38 || event.keyCode === 40) {
event.preventDefault();
}
}
/**
* @param {KeyboardEvent} event
*/
#onEnterPressed(event) {
const autocompleteSelection = document.querySelector('.autocomplete__item--selected');
if (!autocompleteSelection) {
return;
}
const activeToken = SearchWrapper.#findActiveSearchTermPosition(
this.#resolveQueryTokens(),
this.#getInputUserSelection(),
);
if (activeToken instanceof TermToken || activeToken instanceof QuotedTermToken) {
const selectionStart = activeToken.index;
const selectionEnd = activeToken.index + activeToken.value.length;
let autocompletedValue = autocompleteSelection.dataset.value;
if (activeToken instanceof QuotedTermToken) {
autocompletedValue = `"${QuotedTermToken.encode(autocompletedValue)}"`;
}
this.#searchField.value = this.#searchField.value.slice(0, selectionStart)
+ autocompletedValue
+ this.#searchField.value.slice(selectionEnd);
const newSelectionEnd = selectionStart + autocompletedValue.length;
// Place the caret at the end of the currently active tag.
// Actually, this does not work for some reason. After the tag is sent to the field and selection was changed to
// the end of the inserted tag, browser just does not scroll the input to the caret position.
this.#searchField.focus();
this.#searchField.setSelectionRange(newSelectionEnd, newSelectionEnd);
event.preventDefault();
}
}
/**
* @return {string|null}
*/
#findCurrentTagFragment() {
if (!this.#searchField) {
return null;
}
let searchValue = this.#searchField.value;
if (!searchValue) {
return null;
}
const token = SearchWrapper.#findActiveSearchTermPosition(
this.#resolveQueryTokens(),
this.#getInputUserSelection(),
);
if (token instanceof TermToken) {
return token.value;
}
if (token instanceof QuotedTermToken) {
return token.decodedValue;
}
return searchValue;
}
#emitAutoComplete(userInputFragment) {
this.#autoCompleteField.value = userInputFragment;
// Should be at least one frame away, since input event always removes autocomplete window
requestAnimationFrame(() => {
this.#autoCompleteField.dispatchEvent(
new InputEvent('input', {bubbles: true})
);
const autocompleteContainer = document.querySelector('.autocomplete');
if (autocompleteContainer) {
autocompleteContainer.style.left = `${this.container.offsetLeft}px`;
}
});
}
/**
* Loosely estimate where current selected search term is located and return it if found.
* @param {Token[]} tokens Search value to find the actively selected term from.
* @param {number} userSelectionIndex The index of the user selection.
* @return {Token|null} Search term object or NULL if nothing found.
*/
static #findActiveSearchTermPosition(tokens, userSelectionIndex) {
return tokens.find(
token => token.index < userSelectionIndex && token.index + token.value.length >= userSelectionIndex
);
}
}
export function initializeSearWrapper(formElement) {
new SearchWrapper(formElement).initialize();
}

23
src/lib/components/SiteHeaderWrapper.js
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@@ -1,23 +0,0 @@
import {BaseComponent} from "$lib/components/base/BaseComponent.js";
import {SearchWrapper} from "$lib/components/SearchWrapper.js";
class SiteHeaderWrapper extends BaseComponent {
/** @type {SearchWrapper|null} */
#searchWrapper = null;
build() {
const searchForm = this.container.querySelector('.header__search');
this.#searchWrapper = searchForm && new SearchWrapper(searchForm) || null;
}
init() {
if (this.#searchWrapper) {
this.#searchWrapper.initialize();
}
}
}
export function initializeSiteHeader(siteHeaderElement) {
new SiteHeaderWrapper(siteHeaderElement)
.initialize();
}

11
src/styles/content/header.scss
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@@ -1,11 +0,0 @@
.header__search--completable {
.search-autocomplete-dummy {
position: absolute;
height: 0;
opacity: 0;
pointer-events: none;
padding: 0;
margin: 0;
align-self: flex-end;
}
}