99 lines
3.0 KiB
TypeScript
99 lines
3.0 KiB
TypeScript
import { useCallback, CSSProperties } from 'react';
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import cc from 'classcat';
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import { shallow } from 'zustand/shallow';
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import { Rect, Position, getNodeToolbarTransform, getNodesBounds } from '@xyflow/system';
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import { InternalNode, ReactFlowState } from '../../types';
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import { useStore } from '../../hooks/useStore';
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import { useNodeId } from '../../contexts/NodeIdContext';
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import { NodeToolbarPortal } from './NodeToolbarPortal';
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import type { NodeToolbarProps } from './types';
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const nodeEqualityFn = (a?: InternalNode, b?: InternalNode) =>
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a?.internals.positionAbsolute.x !== b?.internals.positionAbsolute.x ||
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a?.internals.positionAbsolute.y !== b?.internals.positionAbsolute.y ||
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a?.measured.width !== b?.measured.width ||
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a?.measured.height !== b?.measured.height ||
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a?.selected !== b?.selected ||
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a?.internals.z !== b?.internals.z;
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const nodesEqualityFn = (a: InternalNode[], b: InternalNode[]) => {
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if (a.length !== b.length) {
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return false;
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}
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return !a.some((node, i) => nodeEqualityFn(node, b[i]));
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};
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const storeSelector = (state: ReactFlowState) => ({
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viewport: {
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x: state.transform[0],
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y: state.transform[1],
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zoom: state.transform[2],
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},
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nodeOrigin: state.nodeOrigin,
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selectedNodesCount: state.nodes.filter((node) => node.selected).length,
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});
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export function NodeToolbar({
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nodeId,
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children,
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className,
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style,
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isVisible,
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position = Position.Top,
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offset = 10,
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align = 'center',
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...rest
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}: NodeToolbarProps) {
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const contextNodeId = useNodeId();
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const nodesSelector = useCallback(
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(state: ReactFlowState): InternalNode[] => {
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const nodeIds = Array.isArray(nodeId) ? nodeId : [nodeId || contextNodeId || ''];
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return nodeIds.reduce<InternalNode[]>((acc, id) => {
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const node = state.nodeLookup.get(id);
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if (node) {
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acc.push(node);
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}
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return acc;
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}, []);
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},
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[nodeId, contextNodeId]
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);
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const nodes = useStore(nodesSelector, nodesEqualityFn);
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const { viewport, nodeOrigin, selectedNodesCount } = useStore(storeSelector, shallow);
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// if isVisible is not set, we show the toolbar only if its node is selected and no other node is selected
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const isActive =
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typeof isVisible === 'boolean' ? isVisible : nodes.length === 1 && nodes[0].selected && selectedNodesCount === 1;
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if (!isActive || !nodes.length) {
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return null;
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}
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const nodeRect: Rect = getNodesBounds(nodes, { nodeOrigin });
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const zIndex: number = Math.max(...nodes.map((node) => (node.internals?.z || 1) + 1));
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const wrapperStyle: CSSProperties = {
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position: 'absolute',
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transform: getNodeToolbarTransform(nodeRect, viewport, position, offset, align),
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zIndex,
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...style,
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};
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return (
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<NodeToolbarPortal>
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<div
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style={wrapperStyle}
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className={cc(['react-flow__node-toolbar', className])}
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{...rest}
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data-id={nodes.reduce((acc, node) => `${acc}${node.id} `, '').trim()}
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>
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{children}
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</div>
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</NodeToolbarPortal>
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);
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}
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