import { power_user } from '../power-user.js'; import { debounce, escapeRegex } from '../utils.js'; import { OPTION_TYPE, SlashCommandAutoCompleteOption, SlashCommandFuzzyScore } from './SlashCommandAutoCompleteOption.js'; import { SlashCommandParser } from './SlashCommandParser.js'; // eslint-disable-next-line no-unused-vars import { NAME_RESULT_TYPE, SlashCommandParserNameResult } from './SlashCommandParserNameResult.js'; export class SlashCommandAutoComplete { /**@type {HTMLTextAreaElement}*/ textarea; /**@type {boolean}*/ isFloating = false; /**@type {SlashCommandParser}*/ parser; /**@type {boolean}*/ isActive = false; /**@type {boolean}*/ isReplaceable = false; /**@type {boolean}*/ isShowingDetails = false; /**@type {string}*/ text; /**@type {SlashCommandParserNameResult}*/ parserResult; /**@type {string}*/ slashCommand; /**@type {boolean}*/ startQuote; /**@type {boolean}*/ endQuote; /**@type {number}*/ selectionStart; /**@type {RegExp}*/ fuzzyRegex; /**@type {Object.}*/ items = {}; /**@type {boolean}*/ hasCache = false; /**@type {SlashCommandAutoCompleteOption[]}*/ result = []; /**@type {SlashCommandAutoCompleteOption}*/ selectedItem = null; /**@type {Promise}*/ pointerup = Promise.resolve(); /**@type {HTMLElement}*/ clone; /**@type {HTMLElement}*/ domWrap; /**@type {HTMLElement}*/ dom; /**@type {HTMLElement}*/ detailsWrap; /**@type {HTMLElement}*/ detailsDom; /**@type {function}*/ renderDebounced; /**@type {function}*/ renderDetailsDebounced; /**@type {function}*/ updatePositionDebounced; /**@type {function}*/ updateDetailsPositionDebounced; /**@type {function}*/ updateFloatingPositionDebounced; get matchType() { return power_user.stscript.matching ?? 'fuzzy'; } /** * @param {HTMLTextAreaElement} textarea The textarea to receive autocomplete. * @param {boolean} isFloating Whether autocomplete should float at the keyboard cursor. */ constructor(textarea, isFloating = false) { this.textarea = textarea; this.isFloating = isFloating; this.parser = new SlashCommandParser(); this.domWrap = document.createElement('div'); { this.domWrap.classList.add('slashCommandAutoComplete-wrap'); if (isFloating) this.domWrap.classList.add('isFloating'); } this.dom = document.createElement('ul'); { this.dom.classList.add('slashCommandAutoComplete'); this.domWrap.append(this.dom); } this.detailsWrap = document.createElement('div'); { this.detailsWrap.classList.add('slashCommandAutoComplete-detailsWrap'); if (isFloating) this.detailsWrap.classList.add('isFloating'); } this.detailsDom = document.createElement('div'); { this.detailsDom.classList.add('slashCommandAutoComplete-details'); this.detailsWrap.append(this.detailsDom); } this.renderDebounced = debounce(this.render.bind(this), 10); this.renderDetailsDebounced = debounce(this.renderDetails.bind(this), 10); this.updatePositionDebounced = debounce(this.updatePosition.bind(this), 10); this.updateDetailsPositionDebounced = debounce(this.updateDetailsPosition.bind(this), 10); this.updateFloatingPositionDebounced = debounce(this.updateFloatingPosition.bind(this), 10); textarea.addEventListener('input', ()=>this.show(true)); textarea.addEventListener('keydown', (evt)=>this.handleKeyDown(evt)); textarea.addEventListener('click', ()=>this.isActive ? this.show() : null); textarea.addEventListener('selectionchange', ()=>this.show()); // textarea.addEventListener('blur', ()=>this.hide()); if (isFloating) { textarea.addEventListener('scroll', ()=>this.updateFloatingPositionDebounced()); } window.addEventListener('resize', ()=>this.updatePositionDebounced()); } /** * Build a cache of DOM list items for autocomplete of slash commands. */ buildCache() { if (!this.hasCache) { this.hasCache = true; // init by appending all command options Object.keys(this.parser.commands).forEach(key=>{ const cmd = this.parser.commands[key]; this.items[key] = this.makeItem(new SlashCommandAutoCompleteOption(OPTION_TYPE.COMMAND, cmd, key)); }); } } /** * * @param {SlashCommandAutoCompleteOption} option * @returns */ makeItem(option) { const li = option.renderItem(); // gotta listen to pointerdown (happens before textarea-blur) li.addEventListener('pointerdown', ()=>{ // gotta catch pointerup to restore focus to textarea (blurs after pointerdown) this.pointerup = new Promise(resolve=>{ const resolver = ()=>{ window.removeEventListener('pointerup', resolver); resolve(); }; window.addEventListener('pointerup', resolver); }); this.selectedItem = this.result.find(it=>it.name == li.getAttribute('data-name')); this.select(); }); return li; } /** * * @param {SlashCommandAutoCompleteOption} item */ updateName(item) { const chars = Array.from(item.dom.querySelector('.name').children); switch (this.matchType) { case 'strict': { chars.forEach((it, idx)=>{ if (idx < item.name.length) { it.classList.add('matched'); } else { it.classList.remove('matched'); } }); break; } case 'includes': { const start = item.name.toLowerCase().search(this.slashCommand); chars.forEach((it, idx)=>{ if (idx < start) { it.classList.remove('matched'); } else if (idx < start + item.name.length) { it.classList.add('matched'); } else { it.classList.remove('matched'); } }); break; } case 'fuzzy': { item.name.replace(this.fuzzyRegex, (_, ...parts)=>{ parts.splice(-2, 2); if (parts.length == 2) { chars.forEach(c=>c.classList.remove('matched')); } else { let cIdx = 0; parts.forEach((it, idx)=>{ if (it === null || it.length == 0) return ''; if (idx % 2 == 1) { chars.slice(cIdx, cIdx + it.length).forEach(c=>c.classList.add('matched')); } else { chars.slice(cIdx, cIdx + it.length).forEach(c=>c.classList.remove('matched')); } cIdx += it.length; }); } return ''; }); } } return item; } /** * Calculate score for the fuzzy match. * @param {SlashCommandAutoCompleteOption} option * @returns The option. */ fuzzyScore(option) { const parts = this.fuzzyRegex.exec(option.name).slice(1, -1); let start = null; let consecutive = []; let current = ''; let offset = 0; parts.forEach((part, idx) => { if (idx % 2 == 0) { if (part.length > 0) { if (current.length > 0) { consecutive.push(current); } current = ''; } } else { if (start === null) { start = offset; } current += part; } offset += part.length; }); if (current.length > 0) { consecutive.push(current); } consecutive.sort((a,b)=>b.length - a.length); option.score = new SlashCommandFuzzyScore(start, consecutive[0]?.length ?? 0); return option; } /** * Compare two auto complete options by their fuzzy score. * @param {SlashCommandAutoCompleteOption} a * @param {SlashCommandAutoCompleteOption} b */ fuzzyScoreCompare(a, b) { if (a.score.start < b.score.start) return -1; if (a.score.start > b.score.start) return 1; if (a.score.longestConsecutive > b.score.longestConsecutive) return -1; if (a.score.longestConsecutive < b.score.longestConsecutive) return 1; return a.name.localeCompare(b.name); } /** * Show the autocomplete. * @param {boolean} isInput Whether triggered by input. * @param {boolean} isForced Whether force-showing (ctrl+space). */ async show(isInput = false, isForced = false) { //TODO check if isInput and isForced are both required this.text = this.textarea.value; // only show with textarea in focus if (document.activeElement != this.textarea) return this.hide(); // only show for slash commands //TODO activation-requirements could be provided as a function if (this.text[0] != '/') return this.hide(); this.buildCache(); // request parser to get command executor (potentially "incomplete", i.e. not an actual existing command) for // cursor position //TODO nameProvider function provided when instantiating? this.parserResult = this.parser.getNameAt(this.text, this.textarea.selectionStart); //TODO options could be fully provided by the name source switch (this.parserResult?.type) { case NAME_RESULT_TYPE.CLOSURE: { this.startQuote = this.text[this.parserResult.start - 2] == '"'; this.endQuote = this.startQuote && this.text[this.parserResult.start - 2 + this.parserResult.name.length + 1] == '"'; try { const qrApi = (await import('../extensions/quick-reply/index.js')).quickReplyApi; this.parserResult.optionList.push(...qrApi.listSets() .map(set=>qrApi.listQuickReplies(set).map(qr=>`${set}.${qr}`)) .flat() .map(qr=>new SlashCommandAutoCompleteOption(OPTION_TYPE.QUICK_REPLY, qr, qr)), ); } catch { /* empty */ } break; } case NAME_RESULT_TYPE.COMMAND: { this.parserResult.optionList.push(...Object.keys(this.parser.commands) .map(key=>new SlashCommandAutoCompleteOption(OPTION_TYPE.COMMAND, this.parser.commands[key], key)), ); break; } default: { // no result break; } } this.slashCommand = this.parserResult?.name?.toLowerCase() ?? ''; // do autocomplete if triggered by a user input and we either don't have an executor or the cursor is at the end // of the name part of the command //TODO whether the input is quotable could be an option (given by the parserResult?) switch (this.parserResult?.type) { case NAME_RESULT_TYPE.CLOSURE: { this.isReplaceable = isInput && (!this.parserResult ? true : this.textarea.selectionStart == this.parserResult.start - 2 + this.parserResult.name.length + (this.startQuote ? 1 : 0)); break; } default: // no result case NAME_RESULT_TYPE.COMMAND: { this.isReplaceable = isInput && (!this.parserResult ? true : this.textarea.selectionStart == this.parserResult.start - 2 + this.parserResult.name.length); break; } } // if [forced (ctrl+space) or user input] and cursor is in the middle of the name part (not at the end) if (isForced || isInput) { //TODO input quotable (see above) switch (this.parserResult?.type) { case NAME_RESULT_TYPE.CLOSURE: { if (this.textarea.selectionStart >= this.parserResult.start - 2 && this.textarea.selectionStart <= this.parserResult.start - 2 + this.parserResult.name.length + (this.startQuote ? 1 : 0)) { this.slashCommand = this.slashCommand.slice(0, this.textarea.selectionStart - (this.parserResult.start - 2) - (this.startQuote ? 1 : 0)); this.parserResult.name = this.slashCommand; this.isReplaceable = true; } break; } case NAME_RESULT_TYPE.COMMAND: { if (this.textarea.selectionStart >= this.parserResult.start - 2 && this.textarea.selectionStart <= this.parserResult.start - 2 + this.parserResult.name.length) { this.slashCommand = this.slashCommand.slice(0, this.textarea.selectionStart - (this.parserResult.start - 2)); this.parserResult.name = this.slashCommand; this.isReplaceable = true; } break; } default: { // no result break; } } } this.fuzzyRegex = new RegExp(`^(.*?)${this.slashCommand.split('').map(char=>`(${escapeRegex(char)})`).join('(.*?)')}(.*?)$`, 'i'); const matchers = { 'strict': (name) => name.toLowerCase().startsWith(this.slashCommand), 'includes': (name) => name.toLowerCase().includes(this.slashCommand), 'fuzzy': (name) => this.fuzzyRegex.test(name), }; // don't show if no executor found, i.e. cursor's area is not a command if (!this.parserResult) return this.hide(); else { let matchingOptions = this.parserResult.optionList .filter(it => this.isReplaceable || it.name == '' ? matchers[this.matchType](it.name) : it.name.toLowerCase() == this.slashCommand) // Filter by the input .filter((it,idx,list) => list.findIndex(opt=>opt.value == it.value) == idx) ; this.result = matchingOptions .filter((it,idx) => matchingOptions.indexOf(it) == idx) .map(option => { let li; //TODO makeItem should be handled in the option class switch (option.type) { case OPTION_TYPE.QUICK_REPLY: { li = this.makeItem(option); break; } case OPTION_TYPE.VARIABLE_NAME: { li = this.makeItem(option); break; } case OPTION_TYPE.COMMAND: { li = this.items[option.name]; break; } } option.replacer = option.name.includes(' ') || this.startQuote || this.endQuote ? `"${option.name}"` : `${option.name}`; option.dom = li; if (this.matchType == 'fuzzy') this.fuzzyScore(option); this.updateName(option); return option; }) // Map to the help string and score .toSorted(this.matchType == 'fuzzy' ? this.fuzzyScoreCompare : (a, b) => a.name.localeCompare(b.name)) // sort by score (if fuzzy) or name ; } if (this.result.length == 0) { // no result and no input? hide autocomplete if (!isInput) { return this.hide(); } // otherwise add "no match" notice const option = new SlashCommandAutoCompleteOption( OPTION_TYPE.BLANK, null, '', ); switch (this.parserResult?.type) { //TODO "no-match" text should be an option (in parserResult?) case NAME_RESULT_TYPE.CLOSURE: { const li = document.createElement('li'); { li.textContent = this.slashCommand.length ? `No matching variables in scope and no matching Quick Replies for "${this.slashCommand}"` : 'No variables in scope and no Quick Replies found.'; } option.dom = li; this.result.push(option); break; } case NAME_RESULT_TYPE.COMMAND: { const li = document.createElement('li'); { li.textContent = `No matching commands for "/${this.slashCommand}"`; } option.dom = li; this.result.push(option); break; } } } else if (this.result.length == 1 && this.parserResult && this.result[0].name == this.parserResult.name) { // only one result that is exactly the current value? just show hint, no autocomplete this.isReplaceable = false; this.isShowingDetails = false; } else if (!this.isReplaceable && this.result.length > 1) { return this.hide(); } this.selectedItem = this.result[0]; this.isActive = true; this.renderDebounced(); } /** * Hide autocomplete. */ hide() { this.domWrap?.remove(); this.detailsWrap?.remove(); this.isActive = false; this.isShowingDetails = false; } /** * Create updated DOM. */ render() { // render autocomplete list if (this.isReplaceable) { this.dom.innerHTML = ''; this.dom.classList.remove('defaultDark'); this.dom.classList.remove('defaultLight'); this.dom.classList.remove('defaultThemed'); this.detailsDom.classList.remove('defaultDark'); this.detailsDom.classList.remove('defaultLight'); this.detailsDom.classList.remove('defaultThemed'); switch (power_user.stscript.autocomplete_style ?? 'theme') { case 'dark': { this.dom.classList.add('defaultDark'); this.detailsDom.classList.add('defaultDark'); break; } case 'light': { this.dom.classList.add('defaultLight'); this.detailsDom.classList.add('defaultLight'); break; } case 'theme': default: { this.dom.classList.add('defaultThemed'); this.detailsDom.classList.add('defaultThemed'); break; } } const frag = document.createDocumentFragment(); for (const item of this.result) { if (item == this.selectedItem) { item.dom.classList.add('selected'); } else { item.dom.classList.remove('selected'); } frag.append(item.dom); } this.dom.append(frag); this.updatePosition(); document.body.append(this.domWrap); } else { this.domWrap.remove(); } this.renderDetailsDebounced(); } /** * Create updated DOM for details. */ renderDetails() { if (!this.isShowingDetails && this.isReplaceable) return this.detailsWrap.remove(); this.detailsDom.innerHTML = ''; this.detailsDom.append(this.selectedItem?.renderDetails() ?? 'NO ITEM'); document.body.append(this.detailsWrap); this.updateDetailsPositionDebounced(); } /** * Update position of DOM. */ updatePosition() { if (this.isFloating) { this.updateFloatingPosition(); } else { const rect = this.textarea.getBoundingClientRect(); this.domWrap.style.setProperty('--bottom', `${window.innerHeight - rect.top}px`); this.dom.style.setProperty('--bottom', `${window.innerHeight - rect.top}px`); this.domWrap.style.bottom = `${window.innerHeight - rect.top}px`; if (this.isShowingDetails) { this.domWrap.style.setProperty('--leftOffset', '1vw'); } else { this.domWrap.style.setProperty('--leftOffset', `${rect.left}px`); } this.domWrap.style.setProperty('--rightOffset', `calc(1vw + ${this.isShowingDetails ? 25 : 0}vw)`); this.updateDetailsPosition(); } } /** * Update position of details DOM. */ updateDetailsPosition() { if (this.isShowingDetails || !this.isReplaceable) { if (this.isFloating) { this.updateFloatingDetailsPosition(); } else { const rect = this.textarea.getBoundingClientRect(); if (this.isReplaceable) { const selRect = this.selectedItem.dom.children[0].getBoundingClientRect(); this.detailsWrap.style.setProperty('--targetOffset', `${selRect.top}`); this.detailsWrap.style.bottom = `${window.innerHeight - rect.top}px`; this.detailsWrap.style.left = `calc(100vw - calc(1vw + ${this.isShowingDetails ? 25 : 0}vw))`; this.detailsWrap.style.right = '1vw'; this.detailsWrap.style.top = '5vh'; } else { this.detailsWrap.style.setProperty('--targetOffset', `${rect.top}`); this.detailsWrap.style.bottom = `${window.innerHeight - rect.top}px`; this.detailsWrap.style.left = `${rect.left}px`; this.detailsWrap.style.right = `calc(100vw - ${rect.right}px)`; this.detailsWrap.style.top = '5vh'; } } } } /** * Update position of floating autocomplete. */ updateFloatingPosition() { const location = this.getCursorPosition(); const rect = this.textarea.getBoundingClientRect(); // cursor is out of view -> hide if (location.bottom < rect.top || location.top > rect.bottom || location.left < rect.left || location.left > rect.right) { return this.hide(); } const left = Math.max(rect.left, location.left); this.domWrap.style.setProperty('--targetOffset', `${left}`); if (location.top <= window.innerHeight / 2) { // if cursor is in lower half of window, show list above line this.domWrap.style.top = `${location.bottom}px`; this.domWrap.style.bottom = 'auto'; this.domWrap.style.maxHeight = `calc(${location.bottom}px - 1vh)`; } else { // if cursor is in upper half of window, show list below line this.domWrap.style.top = 'auto'; this.domWrap.style.bottom = `calc(100vh - ${location.top}px)`; this.domWrap.style.maxHeight = `calc(${location.top}px - 1vh)`; } } updateFloatingDetailsPosition(location = null) { if (!location) location = this.getCursorPosition(); const rect = this.textarea.getBoundingClientRect(); if (location.bottom < rect.top || location.top > rect.bottom || location.left < rect.left || location.left > rect.right) { return this.hide(); } const left = Math.max(rect.left, location.left); this.detailsWrap.style.setProperty('--targetOffset', `${left}`); if (this.isReplaceable) { this.detailsWrap.classList.remove('full'); if (left < window.innerWidth / 4) { // if cursor is in left part of screen, show details on right of list this.detailsWrap.classList.add('right'); this.detailsWrap.classList.remove('left'); } else { // if cursor is in right part of screen, show details on left of list this.detailsWrap.classList.remove('right'); this.detailsWrap.classList.add('left'); } } else { this.detailsWrap.classList.remove('left'); this.detailsWrap.classList.remove('right'); this.detailsWrap.classList.add('full'); } if (location.top <= window.innerHeight / 2) { // if cursor is in lower half of window, show list above line this.detailsWrap.style.top = `${location.bottom}px`; this.detailsWrap.style.bottom = 'auto'; this.detailsWrap.style.maxHeight = `calc(${location.bottom}px - 1vh)`; } else { // if cursor is in upper half of window, show list below line this.detailsWrap.style.top = 'auto'; this.detailsWrap.style.bottom = `calc(100vh - ${location.top}px)`; this.detailsWrap.style.maxHeight = `calc(${location.top}px - 1vh)`; } } /** * Calculate (keyboard) cursor coordinates within textarea. * @returns {{left:number, top:number, bottom:number}} */ getCursorPosition() { const inputRect = this.textarea.getBoundingClientRect(); const style = window.getComputedStyle(this.textarea); if (!this.clone) { this.clone = document.createElement('div'); for (const key of style) { this.clone.style[key] = style[key]; } this.clone.style.position = 'fixed'; this.clone.style.visibility = 'hidden'; document.body.append(this.clone); const mo = new MutationObserver(muts=>{ if (muts.find(it=>Array.from(it.removedNodes).includes(this.textarea))) { this.clone.remove(); } }); mo.observe(this.textarea.parentElement, { childList:true }); } this.clone.style.height = `${inputRect.height}px`; this.clone.style.left = `${inputRect.left}px`; this.clone.style.top = `${inputRect.top}px`; this.clone.style.whiteSpace = style.whiteSpace; this.clone.style.tabSize = style.tabSize; const text = this.textarea.value; const before = text.slice(0, this.textarea.selectionStart); this.clone.textContent = before; const locator = document.createElement('span'); locator.textContent = text[this.textarea.selectionStart]; this.clone.append(locator); this.clone.append(text.slice(this.textarea.selectionStart + 1)); this.clone.scrollTop = this.textarea.scrollTop; this.clone.scrollLeft = this.textarea.scrollLeft; const locatorRect = locator.getBoundingClientRect(); const location = { left: locatorRect.left, top: locatorRect.top, bottom: locatorRect.bottom, }; return location; } /** * Toggle details view alongside autocomplete list. */ toggleDetails() { this.isShowingDetails = !this.isShowingDetails; this.renderDetailsDebounced(); this.updatePosition(); } /** * Select an item for autocomplete and put text into textarea. */ async select() { if (this.isReplaceable && this.selectedItem.value !== null) { this.textarea.value = `${this.text.slice(0, this.parserResult.start - 2)}${this.selectedItem.replacer}${this.text.slice(this.parserResult.start - 2 + this.parserResult.name.length + (this.startQuote ? 1 : 0) + (this.endQuote ? 1 : 0))}`; await this.pointerup; this.textarea.focus(); this.textarea.selectionStart = this.parserResult.start - 2 + this.selectedItem.replacer.length; this.textarea.selectionEnd = this.textarea.selectionStart; this.show(); } else { const selectionStart = this.textarea.selectionStart; const selectionEnd = this.textarea.selectionDirection; await this.pointerup; this.textarea.focus(); this.textarea.selectionStart = selectionStart; this.textarea.selectionDirection = selectionEnd; } } /** * Mark the item at newIdx in the autocomplete list as selected. * @param {number} newIdx */ selectItemAtIndex(newIdx) { this.selectedItem.dom.classList.remove('selected'); this.selectedItem = this.result[newIdx]; this.selectedItem.dom.classList.add('selected'); const rect = this.selectedItem.dom.children[0].getBoundingClientRect(); const rectParent = this.dom.getBoundingClientRect(); if (rect.top < rectParent.top || rect.bottom > rectParent.bottom ) { this.dom.scrollTop += rect.top < rectParent.top ? rect.top - rectParent.top : rect.bottom - rectParent.bottom; } this.renderDetailsDebounced(); } /** * Handle keyboard events. * @param {KeyboardEvent} evt The event. */ async handleKeyDown(evt) { // autocomplete is shown and cursor at end of current command name (or inside name and typed or forced) if (this.isActive && this.isReplaceable) { // actions in the list switch (evt.key) { case 'ArrowUp': { // select previous item if (evt.ctrlKey || evt.altKey || evt.shiftKey) return; evt.preventDefault(); evt.stopPropagation(); const idx = this.result.indexOf(this.selectedItem); let newIdx; if (idx == 0) newIdx = this.result.length - 1; else newIdx = idx - 1; this.selectItemAtIndex(newIdx); return; } case 'ArrowDown': { // select next item if (evt.ctrlKey || evt.altKey || evt.shiftKey) return; evt.preventDefault(); evt.stopPropagation(); const idx = this.result.indexOf(this.selectedItem); const newIdx = (idx + 1) % this.result.length; this.selectItemAtIndex(newIdx); return; } case 'Enter': { // pick the selected item to autocomplete if (evt.ctrlKey || evt.altKey || evt.shiftKey || this.selectedItem.type == OPTION_TYPE.BLANK) break; if (this.selectedItem.name == this.slashCommand) break; evt.preventDefault(); evt.stopImmediatePropagation(); this.select(); return; } case 'Tab': { // pick the selected item to autocomplete if (evt.ctrlKey || evt.altKey || evt.shiftKey || this.selectedItem.type == OPTION_TYPE.BLANK) break; evt.preventDefault(); evt.stopImmediatePropagation(); this.select(); return; } } } // details are shown, cursor can be anywhere if (this.isActive) { switch (evt.key) { case 'Escape': { // close autocomplete if (evt.ctrlKey || evt.altKey || evt.shiftKey) return; evt.preventDefault(); evt.stopPropagation(); this.hide(); return; } case 'Enter': { // hide autocomplete on enter (send, execute, ...) if (!evt.shiftKey) { this.hide(); return; } break; } } } // autocomplete shown or not, cursor anywhere switch (evt.key) { case ' ': { if (evt.ctrlKey) { if (this.isActive && this.isReplaceable) { // ctrl-space to toggle details for selected item this.toggleDetails(); } else { // ctrl-space to force show autocomplete this.show(true, true); } return; } break; } } if (['Control', 'Shift', 'Alt'].includes(evt.key)) { // ignore keydown on modifier keys return; } switch (evt.key) { default: case 'ArrowUp': case 'ArrowDown': case 'ArrowRight': case 'ArrowLeft': { if (this.isActive) { // keyboard navigation, wait for keyup to complete cursor move const oldText = this.textarea.value; await new Promise(resolve=>{ window.addEventListener('keyup', resolve, { once:true }); }); if (this.selectionStart != this.textarea.selectionStart) { this.selectionStart = this.textarea.selectionStart; this.show(this.isReplaceable || oldText != this.textarea.value); } } } } } }