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import clsx from "clsx";
import { memo, useEffect, useRef, useState } from "react";
import { useDevice } from "./App";
import type { LibraryItem } from "../types";
import "./LibraryUnit.scss";
import { CheckboxItem } from "./CheckboxItem";
import { PlusIcon } from "./icons";
import type { SvgCache } from "../hooks/useLibraryItemSvg";
import { useLibraryItemSvg } from "../hooks/useLibraryItemSvg";
export const LibraryUnit = memo(
({
id,
elements,
isPending,
onClick,
selected,
onToggle,
onDrag,
svgCache,
}: {
id: LibraryItem["id"] | /** for pending item */ null;
elements?: LibraryItem["elements"];
isPending?: boolean;
onClick: (id: LibraryItem["id"] | null) => void;
selected: boolean;
onToggle: (id: string, event: React.MouseEvent) => void;
onDrag: (id: string, event: React.DragEvent) => void;
svgCache: SvgCache;
}) => {
const ref = useRef<HTMLDivElement | null>(null);
const svg = useLibraryItemSvg(id, elements, svgCache);
useEffect(() => {
const node = ref.current;
if (!node) {
return;
}
if (svg) {
node.innerHTML = svg.outerHTML;
}
return () => {
node.innerHTML = "";
};
}, [svg]);
const [isHovered, setIsHovered] = useState(false);
const isMobile = useDevice().editor.isMobile;
const adder = isPending && (
<div className="library-unit__adder">{PlusIcon}</div>
);
return (
<div
className={clsx("library-unit", {
"library-unit__active": elements,
"library-unit--hover": elements && isHovered,
"library-unit--selected": selected,
"library-unit--skeleton": !svg,
})}
onMouseEnter={() => setIsHovered(true)}
onMouseLeave={() => setIsHovered(false)}
>
<div
className={clsx("library-unit__dragger", {
"library-unit__pulse": !!isPending,
})}
ref={ref}
draggable={!!elements}
onClick={
!!elements || !!isPending
? (event) => {
if (id && event.shiftKey) {
onToggle(id, event);
} else {
onClick(id);
}
}
: undefined
}
onDragStart={(event) => {
if (!id) {
event.preventDefault();
return;
}
setIsHovered(false);
onDrag(id, event);
}}
/>
{adder}
{id && elements && (isHovered || isMobile || selected) && (
<CheckboxItem
checked={selected}
onChange={(checked, event) => onToggle(id, event)}
className="library-unit__checkbox"
/>
)}
</div>
);
},
);
export const EmptyLibraryUnit = () => (
<div className="library-unit library-unit--skeleton" />
);
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