From 35ddcb27f073cf58b8d80f9b4cf05cd128772b01 Mon Sep 17 00:00:00 2001
From: Philipp Heckel <pheckel@datto.com>
Date: Tue, 5 Apr 2022 19:40:34 -0400
Subject: [PATCH] Good enough emoji picker

---
 web/src/components/EmojiPicker.js | 181 ++++++++++++++++--------------
 1 file changed, 95 insertions(+), 86 deletions(-)

diff --git a/web/src/components/EmojiPicker.js b/web/src/components/EmojiPicker.js
index 85d05d4..965d8ac 100644
--- a/web/src/components/EmojiPicker.js
+++ b/web/src/components/EmojiPicker.js
@@ -1,15 +1,20 @@
 import * as React from 'react';
 import {useRef, useState} from 'react';
-import Popover from '@mui/material/Popover';
 import Typography from '@mui/material/Typography';
 import {rawEmojis} from '../app/emojis';
 import Box from "@mui/material/Box";
 import TextField from "@mui/material/TextField";
-import {InputAdornment} from "@mui/material";
+import {ClickAwayListener, Fade, InputAdornment, styled} from "@mui/material";
 import IconButton from "@mui/material/IconButton";
 import {Close} from "@mui/icons-material";
+import Popper from "@mui/material/Popper";
+import {splitNoEmpty} from "../app/utils";
+
+// Create emoji list by category and create a search base (string with all search words)
+//
+// This also filters emojis that are not supported by Desktop Chrome.
+// This is a hack, but on Ubuntu 18.04, with Chrome 99, only Emoji <= 11 are supported.
 
-// Create emoji list by category; filter emojis that are not supported by Desktop Chrome
 const emojisByCategory = {};
 const isDesktopChrome = /Chrome/.test(navigator.userAgent) && !/Mobile/.test(navigator.userAgent);
 const maxSupportedVersionForDesktopChrome = 11;
@@ -21,7 +26,9 @@ rawEmojis.forEach(emoji => {
         const unicodeVersion = parseFloat(emoji.unicode_version);
         const supportedEmoji = unicodeVersion <= maxSupportedVersionForDesktopChrome || !isDesktopChrome;
         if (supportedEmoji) {
-            emojisByCategory[emoji.category].push(emoji);
+            const searchBase = `${emoji.description.toLowerCase()} ${emoji.aliases.join(" ")} ${emoji.tags.join(" ")}`;
+            const emojiWithSearchBase = { ...emoji, searchBase: searchBase };
+            emojisByCategory[emoji.category].push(emojiWithSearchBase);
         }
     } catch (e) {
         // Nothing. Ignore.
@@ -32,79 +39,77 @@ const EmojiPicker = (props) => {
     const open = Boolean(props.anchorEl);
     const [search, setSearch] = useState("");
     const searchRef = useRef(null);
+    const searchFields = splitNoEmpty(search.toLowerCase(), " ");
 
-    /*
-        FIXME Search is inefficient, somehow make it faster
-
-        useEffect(() => {
-            const matching = rawEmojis.filter(e => {
-                const searchLower = search.toLowerCase();
-                return e.description.toLowerCase().indexOf(searchLower) !== -1
-                    || matchInArray(e.aliases, searchLower)
-                    || matchInArray(e.tags, searchLower);
-            });
-            console.log("matching", matching.length);
-        }, [search]);
-    */
     const handleSearchClear = () => {
         setSearch("");
         searchRef.current?.focus();
     };
 
     return (
-        <>
-            <Popover
-                open={open}
-                elevation={3}
-                onClose={props.onClose}
-                anchorEl={props.anchorEl}
-                anchorOrigin={{
-                    vertical: 'bottom',
-                    horizontal: 'left',
-                }}
-            >
-                <Box sx={{ padding: 2, paddingRight: 0, width: "370px", maxHeight: "300px" }}>
-                    <TextField
-                        inputRef={searchRef}
-                        margin="dense"
-                        size="small"
-                        placeholder="Search emoji"
-                        value={search}
-                        onChange={ev => setSearch(ev.target.value)}
-                        type="text"
-                        variant="standard"
-                        fullWidth
-                        sx={{ marginTop: 0, paddingRight: 2 }}
-                        InputProps={{
-                            endAdornment:
-                                <InputAdornment position="end" sx={{ display: (search) ? '' : 'none' }}>
-                                    <IconButton size="small" onClick={handleSearchClear} edge="end"><Close/></IconButton>
-                                </InputAdornment>
-                        }}
-                    />
-                    <Box sx={{ display: "flex", flexWrap: "wrap", paddingRight: 0, marginTop: 1 }}>
-                        {Object.keys(emojisByCategory).map(category =>
-                            <Category
-                                key={category}
-                                title={category}
-                                emojis={emojisByCategory[category]}
-                                search={search.toLowerCase()}
-                                onPick={props.onEmojiPick}
+        <Popper
+            open={open}
+            anchorEl={props.anchorEl}
+            placement="bottom-start"
+            sx={{ zIndex: 10005 }}
+            transition
+        >
+            {({ TransitionProps }) => (
+                <ClickAwayListener onClickAway={props.onClose}>
+                    <Fade {...TransitionProps} timeout={350}>
+                        <Box sx={{
+                            boxShadow: 3,
+                            padding: 2,
+                            paddingRight: 0,
+                            paddingBottom: 1,
+                            width: "380px",
+                            maxHeight: "300px",
+                            backgroundColor: 'background.paper',
+                            overflowY: "scroll"
+                        }}>
+                            <TextField
+                                inputRef={searchRef}
+                                margin="dense"
+                                size="small"
+                                placeholder="Search emoji"
+                                value={search}
+                                onChange={ev => setSearch(ev.target.value)}
+                                type="text"
+                                variant="standard"
+                                fullWidth
+                                sx={{ marginTop: 0, marginBottom: "12px", paddingRight: 2 }}
+                                InputProps={{
+                                    endAdornment:
+                                        <InputAdornment position="end" sx={{ display: (search) ? '' : 'none' }}>
+                                            <IconButton size="small" onClick={handleSearchClear} edge="end"><Close/></IconButton>
+                                        </InputAdornment>
+                                }}
                             />
-                        )}
-                    </Box>
-                </Box>
-            </Popover>
-        </>
+                            <Box sx={{ display: "flex", flexWrap: "wrap", paddingRight: 0, marginTop: 1 }}>
+                                {Object.keys(emojisByCategory).map(category =>
+                                    <Category
+                                        key={category}
+                                        title={category}
+                                        emojis={emojisByCategory[category]}
+                                        search={searchFields}
+                                        onPick={props.onEmojiPick}
+                                    />
+                                )}
+                            </Box>
+                        </Box>
+                    </Fade>
+                </ClickAwayListener>
+            )}
+        </Popper>
     );
 };
 
 const Category = (props) => {
-    const showTitle = !props.search;
+    const showTitle = props.search.length === 0;
     return (
         <>
             {showTitle &&
-                <Typography variant="body1" sx={{ width: "100%", marginTop: 1, marginBottom: 1 }}>
+                <Typography variant="body1" sx={{ width: "100%", marginBottom: 1 }}>
                     {props.title}
                 </Typography>
             }
@@ -122,39 +127,43 @@ const Category = (props) => {
 
 const Emoji = (props) => {
     const emoji = props.emoji;
-    const search = props.search;
-    const matches = search === ""
-        || emoji.description.toLowerCase().indexOf(search) !== -1
-        || matchInArray(emoji.aliases, search)
-        || matchInArray(emoji.tags, search);
-    if (!matches) {
-        return null;
-    }
+    const matches = emojiMatches(emoji, props.search);
     return (
-        <div
+        <EmojiDiv
             onClick={props.onClick}
             title={`${emoji.description} (${emoji.aliases[0]})`}
-            style={{
-                fontSize: "30px",
-                width: "30px",
-                height: "30px",
-                marginTop: "8px",
-                marginBottom: "8px",
-                marginRight: "8px",
-                lineHeight: "30px",
-                cursor: "pointer"
-            }}
+            style={{ display: (matches) ? '' : 'none' }}
         >
             {props.emoji.emoji}
-        </div>
+        </EmojiDiv>
     );
 };
 
-const matchInArray = (arr, search) => {
-    if (!arr || !search) {
-        return false;
+const EmojiDiv = styled("div")({
+    fontSize: "30px",
+    width: "30px",
+    height: "30px",
+    marginTop: "8px",
+    marginBottom: "8px",
+    marginRight: "8px",
+    lineHeight: "30px",
+    cursor: "pointer",
+    opacity: 0.85,
+    "&:hover": {
+        opacity: 1
     }
-    return arr.filter(s => s.indexOf(search) !== -1).length > 0;
+});
+
+const emojiMatches = (emoji, words) => {
+    if (words.length === 0) {
+        return true;
+    }
+    for (const word of words) {
+        if (emoji.searchBase.indexOf(word) === -1) {
+            return false;
+        }
+    }
+    return true;
 }
 
 export default EmojiPicker;