Emoji Tooltip: Disable tooltip for a single character (#1178)

src/components/middle/composer/AttachmentModal.tsx

@@ -33,6 +33,7 @@ export type OwnProps = {
   usersById?: Record<number, ApiUser>;
   recentEmojis: string[];
   language: LangCode;
+  emojiKeywords?: Record<string, string[]>;
   addRecentEmoji: AnyToVoidFunction;
   loadEmojiKeywords: AnyToVoidFunction;
   onCaptionUpdate: (html: string) => void;
@@ -52,6 +53,7 @@ const AttachmentModal: FC<OwnProps> = ({
   usersById,
   recentEmojis,
   language,
+  emojiKeywords,
   onCaptionUpdate,
   addRecentEmoji,
   loadEmojiKeywords,
@@ -89,6 +91,7 @@ const AttachmentModal: FC<OwnProps> = ({
     recentEmojis,
     EDITABLE_INPUT_MODAL_ID,
     onCaptionUpdate,
+    emojiKeywords,
   );
 
   useEffect(() => (isOpen ? captureEscKeyListener(onClear) : undefined), [isOpen, onClear]);

src/components/middle/composer/Composer.tsx

@@ -673,6 +673,10 @@ const Composer: FC<OwnProps & StateProps & DispatchProps> = ({
       : (isSymbolMenuOpen && 'is-loading'),
   );
 
+  const onSend = mainButtonState === MainButtonState.Edit
+    ? handleEditComplete
+    : (shouldSchedule ? openCalendar : handleSend);
+
   return (
     <div className={className}>
       {allowedAttachmentOptions.canAttachMedia && (
@@ -695,6 +699,7 @@ const Composer: FC<OwnProps & StateProps & DispatchProps> = ({
         recentEmojis={recentEmojis}
         onCaptionUpdate={setHtml}
         language={language}
+        emojiKeywords={emojiKeywords}
         addRecentEmoji={addRecentEmoji}
         loadEmojiKeywords={loadEmojiKeywords}
         onSend={shouldSchedule ? openCalendar : handleSend}
@@ -774,9 +779,7 @@ const Composer: FC<OwnProps & StateProps & DispatchProps> = ({
             shouldSupressFocus={IS_MOBILE_SCREEN && isSymbolMenuOpen}
             shouldSupressTextFormatter={isEmojiTooltipOpen || isMentionTooltipOpen}
             onUpdate={setHtml}
-            onSend={mainButtonState === MainButtonState.Edit
-              ? handleEditComplete
-              : (shouldSchedule ? openCalendar : handleSend)}
+            onSend={onSend}
             onSupressedFocus={closeSymbolMenu}
           />
           {withScheduledButton && (

src/components/middle/composer/EmojiButton.scss

@@ -18,7 +18,7 @@
 
   &.focus,
   &:hover {
-    background-color: var(--color-interactive-element-hover);
+    background-color: var(--color-background-selected);
   }
 
   & > img {

src/components/middle/composer/EmojiTooltip.tsx

@@ -2,6 +2,8 @@ import React, {
   FC, memo, useCallback, useEffect, useRef, useState,
 } from '../../../lib/teact/teact';
 
+import { LangCode } from '../../../types';
+
 import { IS_TOUCH_ENV } from '../../../util/environment';
 import buildClassName from '../../../util/buildClassName';
 import cycleRestrict from '../../../util/cycleRestrict';
@@ -16,10 +18,11 @@ import Loading from '../../ui/Loading';
 import EmojiButton from './EmojiButton';
 
 import './EmojiTooltip.scss';
-import { LangCode } from '../../../types';
 
 const VIEWPORT_MARGIN = 8;
 const EMOJI_BUTTON_WIDTH = 44;
+const CLOSE_DURATION = 350;
+const NO_EMOJI_SELECTED_INDEX = -1;
 
 function setItemVisible(index: number, containerRef: Record<string, any>) {
   const container = containerRef.current!;
@@ -59,8 +62,6 @@ export type OwnProps = {
   emojis: Emoji[];
 };
 
-const CLOSE_DURATION = 350;
-
 const EmojiTooltip: FC<OwnProps> = ({
   isOpen,
   language,
@@ -75,7 +76,7 @@ const EmojiTooltip: FC<OwnProps> = ({
   const { shouldRender, transitionClassNames } = useShowTransition(isOpen, undefined, undefined, false);
   const listEmojis: Emoji[] = usePrevDuringAnimation(emojis.length ? emojis : undefined, CLOSE_DURATION) || [];
 
-  const [selectedIndex, setSelectedIndex] = useState(-1);
+  const [selectedIndex, setSelectedIndex] = useState(NO_EMOJI_SELECTED_INDEX);
 
   useEffect(() => {
     loadEmojiKeywords({ language });
@@ -91,21 +92,20 @@ const EmojiTooltip: FC<OwnProps> = ({
 
   const getSelectedIndex = useCallback((newIndex: number) => {
     if (!emojis.length) {
-      return -1;
+      return NO_EMOJI_SELECTED_INDEX;
     }
 
     const emojisCount = emojis.length;
     return cycleRestrict(emojisCount, newIndex);
   }, [emojis]);
 
-
   const handleArrowKey = useCallback((value: number, e: KeyboardEvent) => {
     e.preventDefault();
     setSelectedIndex((index) => (getSelectedIndex(index + value)));
   }, [setSelectedIndex, getSelectedIndex]);
 
   const handleSelectEmoji = useCallback((e: KeyboardEvent) => {
-    if (emojis.length && selectedIndex > -1) {
+    if (emojis.length && selectedIndex > NO_EMOJI_SELECTED_INDEX) {
       const emoji = emojis[selectedIndex];
       if (emoji) {
         e.preventDefault();

src/components/middle/composer/hooks/useEmojiTooltip.ts

@@ -17,8 +17,16 @@ let emojiDataPromise: Promise<EmojiModule>;
 let emojiRawData: EmojiRawData;
 let emojiData: EmojiData;
 
-const RE_NOT_EMOJI_SEARCH = /[^-_:\p{L}\p{N}]+/iu;
+let RE_NOT_EMOJI_SEARCH: RegExp;
 const EMOJIS_LIMIT = 36;
+const FILTER_MIN_LENGTH = 2;
+
+try {
+  RE_NOT_EMOJI_SEARCH = new RegExp('[^-_:\\p{L}\\p{N}]+', 'iu');
+} catch (e) {
+  // Support for older versions of firefox
+  RE_NOT_EMOJI_SEARCH = new RegExp('[^-_:\\d\\wа-яё]+', 'i');
+}
 
 export default function useEmojiTooltip(
   isAllowed: boolean,
@@ -31,7 +39,9 @@ export default function useEmojiTooltip(
   const [isOpen, markIsOpen, unmarkIsOpen] = useFlag();
 
   const [byId, setById] = useState<Record<string, Emoji> | undefined>();
+  const [keywords, setKeywords] = useState<string[]>();
   const [byKeyword, setByKeyword] = useState<Record<string, Emoji[]>>({});
+  const [names, setNames] = useState<string[]>();
   const [byName, setByName] = useState<Record<string, Emoji[]>>({});
 
   const [filteredEmojis, setFilteredEmojis] = useState<Emoji[]>([]);
@@ -70,12 +80,14 @@ export default function useEmojiTooltip(
 
     if (emojiKeywords) {
       const byNative = buildCollectionByKey(emojis, 'native');
-      setByKeyword(mapValues(emojiKeywords, (natives) => {
+      const emojisByKeyword = mapValues(emojiKeywords, (natives) => {
         return Object.values(pickTruthy(byNative, natives));
-      }));
+      });
+      setByKeyword(emojisByKeyword);
+      setKeywords(Object.keys(emojisByKeyword));
     }
 
-    setByName(emojis.reduce((result, emoji) => {
+    const emojisByName = emojis.reduce((result, emoji) => {
       emoji.names.forEach((name) => {
         if (!result[name]) {
           result[name] = [];
@@ -85,7 +97,9 @@ export default function useEmojiTooltip(
       });
 
       return result;
-    }, {} as Record<string, Emoji[]>));
+    }, {} as Record<string, Emoji[]>);
+    setByName(emojisByName);
+    setNames(Object.keys(emojisByName));
   }, [byId, emojiKeywords]);
 
   useEffect(() => {
@@ -106,12 +120,12 @@ export default function useEmojiTooltip(
 
     if (!filter) {
       matched = recentEmojis;
-    } else {
-      const matchedKeywords = Object.keys(byKeyword).filter((keyword) => keyword.startsWith(filter));
+    } else if (filter.length >= FILTER_MIN_LENGTH) {
+      const matchedKeywords = keywords.filter((keyword) => keyword.startsWith(filter)).sort();
       matched = matched.concat(flatten(Object.values(pickTruthy(byKeyword, matchedKeywords))));
 
       // Also search by names, which is useful for non-English languages
-      const matchedNames = Object.keys(byName).filter((name) => name.startsWith(filter));
+      const matchedNames = names.filter((name) => name.startsWith(filter));
       matched = matched.concat(flatten(Object.values(pickTruthy(byName, matchedNames))));
 
       matched = unique(matched);
@@ -123,7 +137,10 @@ export default function useEmojiTooltip(
     } else {
       unmarkIsOpen();
     }
-  }, [byId, byKeyword, byName, html, isAllowed, markIsOpen, recentEmojis, unmarkIsOpen]);
+  }, [
+    byId, byKeyword, keywords, byName, names,
+    html, isAllowed, markIsOpen, recentEmojis, unmarkIsOpen,
+  ]);
 
   const insertEmoji = useCallback((textEmoji: string) => {
     const atIndex = html.lastIndexOf(':');