76 lines
2.1 KiB
TypeScript
76 lines
2.1 KiB
TypeScript
/**
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* The nodes selection rectangle gets displayed when a user
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* made a selection with on or several nodes
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*/
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import React, { memo, useRef, MouseEvent } from 'react';
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import cc from 'classcat';
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import shallow from 'zustand/shallow';
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import { useStore, useStoreApi } from '../../store';
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import { Node, ReactFlowState } from '../../types';
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import { getRectOfNodes } from '../../utils/graph';
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import useDrag from '../../hooks/useDrag';
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export interface NodesSelectionProps {
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onSelectionContextMenu?: (event: MouseEvent, nodes: Node[]) => void;
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noPanClassName?: string;
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}
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const selector = (s: ReactFlowState) => ({
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transformString: `translate(${s.transform[0]}px,${s.transform[1]}px) scale(${s.transform[2]})`,
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userSelectionActive: s.userSelectionActive,
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...getRectOfNodes(Array.from(s.nodeInternals.values()).filter((n) => n.selected)),
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});
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const bboxSelector = (s: ReactFlowState) => {
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const selectedNodes = Array.from(s.nodeInternals.values()).filter((n) => n.selected);
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return getRectOfNodes(selectedNodes);
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};
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function NodesSelection({ onSelectionContextMenu, noPanClassName }: NodesSelectionProps) {
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const store = useStoreApi();
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const { transformString, userSelectionActive } = useStore(selector, shallow);
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const { width, height, x: left, y: top } = useStore(bboxSelector, shallow);
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const nodeRef = useRef(null);
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useDrag({
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nodeRef,
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});
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if (userSelectionActive || !width || !height) {
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return null;
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}
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const onContextMenu = onSelectionContextMenu
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? (event: MouseEvent) => {
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const selectedNodes = Array.from(store.getState().nodeInternals.values()).filter((n) => n.selected);
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onSelectionContextMenu(event, selectedNodes);
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}
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: undefined;
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return (
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<div
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className={cc(['react-flow__nodesselection', 'react-flow__container', noPanClassName])}
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style={{
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transform: transformString,
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}}
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>
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<div
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ref={nodeRef}
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className="react-flow__nodesselection-rect"
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onContextMenu={onContextMenu}
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style={{
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width,
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height,
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top,
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left,
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}}
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/>
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</div>
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);
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}
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export default memo(NodesSelection);
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