[feature/frontend] filterable local emoji list (#1385)

web/source/css/base.css

@@ -419,11 +419,6 @@ label {
 	display: flex;
 	flex-direction: column;
 
-	&.scrolling {
-		max-height: 40rem;
-		overflow: auto;
-	}
-
 	.header, .entry {
 		padding: 0.5rem;
 	}
@@ -435,6 +430,17 @@ label {
 		font-weight: bold;
 	}
 
+	.entries {
+		display: flex;
+		flex-direction: column;
+
+		&.scrolling {
+			height: 20rem;
+			max-height: 20rem;
+			overflow: auto;
+		}
+	}
+
 	input[type=checkbox] {
 		margin-left: 0.5rem;
 	}

web/source/settings/admin/emoji/local/overview.js

@@ -20,13 +20,18 @@
 
 const React = require("react");
 const { Link } = require("wouter");
+const syncpipe = require("syncpipe");
+const { matchSorter } = require("match-sorter");
 
 const NewEmojiForm = require("./new-emoji");
+const { useTextInput } = require("../../../lib/form");
 
 const query = require("../../../lib/query");
 const { useEmojiByCategory } = require("../category-select");
+
 const Loading = require("../../../components/loading");
 const { Error } = require("../../../components/error");
+const { TextInput } = require("../../../components/form/inputs");
 
 module.exports = function EmojiOverview({ baseUrl }) {
 	const {
@@ -53,24 +58,71 @@ module.exports = function EmojiOverview({ baseUrl }) {
 
 	return (
 		<>
-			<h1>Custom Emoji (local)</h1>
+			<h1>Local Custom Emoji</h1>
+			<p>
+				To use custom emoji in your toots they have to be 'local' to the instance.
+				You can either upload them here directly, or copy from those already
+				present on other (known) instances through the <Link to={`../remote`}>Remote Emoji</Link> page.
+			</p>
 			{content}
 		</>
 	);
 };
 
 function EmojiList({ emoji, baseUrl }) {
+	const filterField = useTextInput("filter");
+	const filter = filterField.value;
+
 	const emojiByCategory = useEmojiByCategory(emoji);
 
+	/* Filter emoji based on shortcode match with user input, hiding empty categories */
+	const { filteredEmoji, hidden } = React.useMemo(() => {
+		let hidden = emoji.length;
+		const filteredEmoji = syncpipe(emojiByCategory, [
+			(_) => Object.entries(emojiByCategory),
+			(_) => _.map(([category, entries]) => {
+				let filteredEntries = matchSorter(entries, filter, { keys: ["shortcode"] });
+				if (filteredEntries.length == 0) {
+					return null;
+				} else {
+					hidden -= filteredEntries.length;
+					return [category, filteredEntries];
+				}
+			}),
+			(_) => _.filter((value) => value !== null)
+		]);
+
+		return { filteredEmoji, hidden };
+	}, [filter, emojiByCategory, emoji.length]);
+
 	return (
 		<div>
 			<h2>Overview</h2>
+			{emoji.length > 0
+				? <span>{emoji.length} custom emoji {hidden > 0 && `(${hidden} filtered)`}</span>
+				: <span>No custom emoji yet, you can add one below.</span>
+			}
 			<div className="list emoji-list">
-				{emoji.length == 0 && "No local emoji yet, add one below"}
-				{Object.entries(emojiByCategory).map(([category, entries]) => {
+				<div className="header">
+					<TextInput
+						field={filterField}
+						name="emoji-shortcode"
+						placeholder="Search"
+					/>
+				</div>
+				<div className="entries scrolling">
+					{filteredEmoji.length > 0
+						? (
+							<div className="entries scrolling">
+								{filteredEmoji.map(([category, entries]) => {
 									return <EmojiCategory key={category} category={category} entries={entries} baseUrl={baseUrl} />;
 								})}
 							</div>
+						)
+						: <div className="entry">No local emoji matched your filter.</div>
+					}
+				</div>
+			</div>
 		</div>
 	);
 }

web/source/settings/admin/federation/overview.js

@@ -76,7 +76,8 @@ module.exports = function InstanceOverview({ baseUrl }) {
 					<span>
 						{blockedInstancesList.length} blocked instance{blockedInstancesList.length != 1 ? "s" : ""} {filtered > 0 && `(${filtered} filtered by search)`}
 					</span>
-					<div className="list scrolling">
+					<div className="list">
+						<div className="entries scrolling">
 							{filteredInstances.map((entry) => {
 								return (
 									<Link key={entry.domain} to={`${baseUrl}/${entry.domain}`}>
@@ -94,6 +95,7 @@ module.exports = function InstanceOverview({ baseUrl }) {
 						</div>
 					</div>
 				</div>
+			</div>
 			<Link to={`${baseUrl}/import-export`}><a>Or use the bulk import/export interface</a></Link>
 		</>
 	);

web/source/settings/style.css

@@ -405,6 +405,10 @@ span.form-info {
 .emoji-list {
 	background: $list-entry-bg;
 
+	.header .form-field {
+		flex: 1 1 auto;
+	}
+
 	.entry {
 		flex-direction: column;