feat(ListView): add a new component

src/components/ListView.tsx

@@ -0,0 +1,139 @@
+import React, {
+    Dispatch,
+    SetStateAction,
+    createContext,
+    memo,
+    useCallback,
+    useContext,
+    useEffect,
+    useRef,
+    useState,
+    RefObject,
+} from 'react';
+
+import { useMounted } from '../hooks/useMounted';
+import { useKeyPress } from '../hooks';
+
+interface ListViewProps {
+    onClick?: <T>(value: T) => void;
+    onKeyboardClick?: <T>(value: T) => void;
+    children: React.ReactNode;
+}
+
+interface ListViewContext {
+    registerItem: (value: unknown) => number;
+    items: RefObject<unknown[]>;
+    cursor?: number;
+    hovered?: number;
+    setHovered?: Dispatch<SetStateAction<undefined | number>>;
+}
+const listViewContext = createContext<ListViewContext | undefined>(undefined);
+
+const useListViewContext = () => {
+    const ctx = useContext(listViewContext);
+
+    if (!ctx) {
+        throw new Error('Dont use element outside of `ListView` component');
+    }
+
+    return ctx;
+};
+
+export const ListView: React.FC<ListViewProps> = ({ children, onKeyboardClick }) => {
+    const downPress = useKeyPress('ArrowDown');
+    const upPress = useKeyPress('ArrowUp');
+    const spacePress = useKeyPress(' ');
+    const enterPress = useKeyPress('Enter');
+    const [cursor, setCursor] = useState<number | undefined>();
+    const [hovered, setHovered] = useState<number | undefined>();
+    const items = useRef<unknown[]>([]);
+
+    const registerItem = useCallback((value: unknown) => items.current.push(value) - 1, [items]);
+
+    useEffect(() => {
+        if (downPress) {
+            setCursor((prevState) => {
+                if (prevState === undefined) return 0;
+                if (prevState < items.current.length - 1) return prevState + 1;
+                if (prevState === items.current.length - 1) return 0;
+
+                return prevState;
+            });
+
+            setHovered(undefined);
+        }
+    }, [downPress]);
+
+    useEffect(() => {
+        if (upPress) {
+            setCursor((prevState) => {
+                if (prevState === undefined) return items.current.length - 1;
+                if (prevState > 0) return prevState - 1;
+                if (prevState === 0) return items.current.length - 1;
+
+                return prevState;
+            });
+
+            setHovered(undefined);
+        }
+    }, [upPress]);
+
+    useEffect(() => {
+        if (cursor !== undefined && (spacePress || enterPress)) {
+            onKeyboardClick?.(items.current[cursor]);
+        }
+    }, [cursor, spacePress, enterPress, items, onKeyboardClick]);
+
+    useEffect(() => {
+        if (hovered !== undefined && cursor !== undefined) {
+            setCursor(hovered);
+        }
+    }, [items, hovered, cursor]);
+
+    return (
+        <listViewContext.Provider value={{ items, cursor, hovered, registerItem, setHovered }}>
+            {children}
+        </listViewContext.Provider>
+    );
+};
+
+interface ListViewItemChildProps {
+    active?: boolean;
+    hovered?: boolean;
+    onMouseMove: React.MouseEventHandler<HTMLElement>;
+    onMouseLeave: React.MouseEventHandler<HTMLElement>;
+}
+
+interface ListViewItemProps {
+    renderItem: (props: ListViewItemChildProps) => React.ReactNode;
+    value?: unknown;
+}
+
+export const ListViewItem: React.FC<ListViewItemProps> = memo(({ renderItem, value }) => {
+    const { cursor, registerItem, setHovered, hovered } = useListViewContext();
+    const mounted = useMounted();
+    const id = useRef<number | undefined>(undefined);
+
+    useEffect(() => {
+        if (mounted) {
+            id.current = registerItem(value);
+        }
+    }, [mounted, registerItem, value]);
+
+    const onMouseLeave = useCallback<React.MouseEventHandler<HTMLElement>>(() => {
+        setHovered?.(undefined);
+    }, [setHovered]);
+
+    const onMouseMove = useCallback<React.MouseEventHandler<HTMLElement>>(() => {
+        if (hovered !== id.current) {
+            setHovered?.(id.current);
+        }
+    }, [setHovered, hovered]);
+
+    return renderItem({
+        active: cursor !== undefined && id.current === cursor,
+        hovered: hovered !== undefined && id.current === hovered,
+        onMouseLeave,
+        onMouseMove,
+    });
+});

src/stories/ListItem.stories.tsx

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+import type { Meta, StoryFn } from '@storybook/react';
+import React from 'react';
+
+import { ListView, ListViewItem } from '../components/ListView';
+import { Table, TableRow, TableCell } from '../components/Table';
+
+export default {
+    title: 'ListView',
+    component: ListView,
+} as Meta<typeof ListView>;
+
+const data = Array.from({ length: 10 }, (_, i) => ({
+    id: String(i + 1),
+    title: `Title for ${i + 1} record`,
+}));
+
+export const Default: StoryFn = () => {
+    return (
+        <ListView>
+            <Table width={200} gap={10}>
+                {data.slice(0, 5).map((item) => (
+                    <ListViewItem
+                        key={item.title}
+                        renderItem={({ hovered, active, ...callbacks }) => (
+                            <TableRow interactive focused={hovered || active} gap={10} {...callbacks}>
+                                <TableCell width="2ch" justify="end">
+                                    {item.id}
+                                </TableCell>
+                                <TableCell>{item.title}</TableCell>
+                            </TableRow>
+                        )}
+                    />
+                ))}
+            </Table>
+            <br />
+            <Table width={200} gap={10}>
+                {data
+                    .slice(5)
+                    .reverse()
+                    .map((item) => (
+                        <ListViewItem
+                            key={item.title}
+                            renderItem={({ hovered, active, ...callbacks }) => (
+                                <TableRow interactive focused={hovered || active} gap={10} {...callbacks}>
+                                    <TableCell width="2ch" justify="end">
+                                        {item.id}
+                                    </TableCell>
+                                    <TableCell>{item.title}</TableCell>
+                                </TableRow>
+                            )}
+                        />
+                    ))}
+            </Table>
+        </ListView>
+    );
+};