Files
grungnet/src/components/tile/SortableTilesDragOverlay.tsx
Mitchell McCaffrey 029a992381 Typescript
2021-07-17 18:39:49 +10:00

102 lines
2.9 KiB
TypeScript

import React from "react";
import { createPortal } from "react-dom";
import { DragOverlay } from "@dnd-kit/core";
import { animated, useSpring, config } from "react-spring";
import { Badge } from "theme-ui";
import Vector2 from "../../helpers/Vector2";
import { useTileDragId } from "../../contexts/TileDragContext";
import { useGroup } from "../../contexts/GroupContext";
import { Group } from "../../types/Group";
type SortableTilesDragOverlayProps = {
renderTile: (group: Group) => React.ReactNode;
subgroup: boolean;
};
function SortableTilesDragOverlay({
renderTile,
subgroup,
}: SortableTilesDragOverlayProps) {
const dragId = useTileDragId();
const {
groups,
selectedGroupIds: allSelectedIds,
filter,
openGroupId,
openGroupItems,
filteredGroupItems,
} = useGroup();
const activeGroups = subgroup
? openGroupItems
: filter
? filteredGroupItems
: groups;
// Only populate selected groups if needed
let selectedGroupIds: string[] = [];
if ((subgroup && openGroupId) || (!subgroup && !openGroupId)) {
selectedGroupIds = allSelectedIds;
}
const dragBounce = useSpring({
transform: !!dragId ? "scale(0.9)" : "scale(1)",
config: config.wobbly,
});
function renderDragOverlays() {
let selectedIndices = selectedGroupIds.map((groupId) =>
activeGroups.findIndex((group) => group.id === groupId)
);
const activeIndex = activeGroups.findIndex((group) => group.id === dragId);
// Sort so the draging tile is the first element
selectedIndices = selectedIndices.sort((a, b) =>
a === activeIndex ? -1 : b === activeIndex ? 1 : 0
);
selectedIndices = selectedIndices.slice(0, 5);
let coords = selectedIndices.map(
(_, index) => new Vector2(5 * index, 5 * index)
);
// Reverse so the first element is rendered on top
selectedIndices = selectedIndices.reverse();
coords = coords.reverse();
const selectedGroups = selectedIndices.map((index) => activeGroups[index]);
return selectedGroups.map((group, index) => (
<DragOverlay dropAnimation={null} key={group.id}>
<div
style={{
transform: `translate(${coords[index].x}%, ${coords[index].y}%)`,
}}
>
<animated.div style={{ ...dragBounce, position: "relative" }}>
{renderTile(group)}
{index === selectedIndices.length - 1 &&
selectedGroupIds.length > 1 && (
<Badge
sx={{
position: "absolute",
top: 0,
right: 0,
transform: "translate(25%, -25%)",
}}
>
{selectedGroupIds.length}
</Badge>
)}
</animated.div>
</div>
</DragOverlay>
));
}
return createPortal(dragId && renderDragOverlays(), document.body);
}
export default SortableTilesDragOverlay;