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xyflow/packages/svelte/src/lib/store/initial-store.ts
T

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TypeScript

import { readable, writable } from 'svelte/store';
import {
infiniteExtent,
SelectionMode,
ConnectionMode,
ConnectionLineType,
type SelectionRect,
type Transform,
type SnapGrid,
type MarkerProps,
type PanZoomInstance,
type CoordinateExtent,
type IsValidConnection,
type GroupedEdges,
type NodeOrigin,
type OnError,
devWarn
} from '@xyflow/system';
import DefaultNode from '$lib/components/nodes/DefaultNode.svelte';
import InputNode from '$lib/components/nodes/InputNode.svelte';
import OutputNode from '$lib/components/nodes/OutputNode.svelte';
import BezierEdge from '$lib/components/edges/BezierEdge.svelte';
import StraightEdge from '$lib/components/edges/StraightEdge.svelte';
import SmoothStepEdge from '$lib/components/edges/SmoothStepEdge.svelte';
import StepEdge from '$lib/components/edges/StepEdge.svelte';
import type { NodeTypes, EdgeTypes, EdgeLayouted, Node, FitViewOptions } from '$lib/types';
import { createNodesStore, createEdgesStore } from './utils';
import { initConnectionProps, type ConnectionProps } from './derived-connection-props';
export const initialNodeTypes = {
input: InputNode,
output: OutputNode,
default: DefaultNode
};
export const initialEdgeTypes = {
straight: StraightEdge,
smoothstep: SmoothStepEdge,
default: BezierEdge,
step: StepEdge
};
export const getInitialStore = () => ({
flowId: writable<string | null>(null),
nodes: createNodesStore([]),
visibleNodes: readable<Node[]>([]),
edges: createEdgesStore([]),
edgeTree: readable<GroupedEdges<EdgeLayouted>[]>([]),
height: writable<number>(500),
width: writable<number>(500),
minZoom: writable<number>(0.5),
maxZoom: writable<number>(2),
nodeOrigin: writable<NodeOrigin>([0, 0]),
nodeExtent: writable<CoordinateExtent>(infiniteExtent),
translateExtent: writable<CoordinateExtent>(infiniteExtent),
autoPanOnNodeDrag: writable<boolean>(true),
autoPanOnConnect: writable<boolean>(true),
fitViewOnInit: writable<boolean>(false),
fitViewOnInitDone: writable<boolean>(false),
fitViewOptions: writable<FitViewOptions>(undefined),
panZoom: writable<PanZoomInstance | null>(null),
snapGrid: writable<SnapGrid | null>(null),
dragging: writable<boolean>(false),
selectionRect: writable<SelectionRect | null>(null),
selectionKeyPressed: writable<boolean>(false),
multiselectionKeyPressed: writable<boolean>(false),
deleteKeyPressed: writable<boolean>(false),
panActivationKeyPressed: writable<boolean>(false),
selectionRectMode: writable<string | null>(null),
selectionMode: writable<SelectionMode>(SelectionMode.Partial),
nodeTypes: writable<NodeTypes>(initialNodeTypes),
edgeTypes: writable<EdgeTypes>(initialEdgeTypes),
transform: writable<Transform>([0, 0, 1]),
connectionMode: writable<ConnectionMode>(ConnectionMode.Strict),
domNode: writable<HTMLDivElement | null>(null),
connection: readable<ConnectionProps>(initConnectionProps),
connectionLineType: writable<ConnectionLineType>(ConnectionLineType.Bezier),
connectionRadius: writable<number>(20),
isValidConnection: writable<IsValidConnection>(() => true),
nodesDraggable: writable<boolean>(true),
nodesConnectable: writable<boolean>(true),
elementsSelectable: writable<boolean>(true),
selectNodesOnDrag: writable<boolean>(true),
markers: readable<MarkerProps[]>([]),
defaultMarkerColor: writable<string>('#b1b1b7'),
lib: readable<string>('svelte'),
onlyRenderVisibleElements: writable<boolean>(false),
onError: writable<OnError>(devWarn)
});