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<script lang="ts">
import { type NodeProps, useSvelteFlow } from '@xyflow/svelte';
import Sigma from 'sigma';
import * as graphology from 'graphology';
import * as graphologyLibrary from 'graphology-library';
import LynxKiteNode from './LynxKiteNode.svelte';
type $$Props = NodeProps;
const { updateNodeData } = useSvelteFlow();
export let id: $$Props['id'];
export let data: $$Props['data'];
let sigmaCanvas: HTMLElement;
let sigmaInstance: Sigma;
$: if (sigmaCanvas) sigmaInstance = new Sigma(new graphology.Graph(), sigmaCanvas);
$: if (sigmaInstance && data.view) {
// Graphology will modify this in place, so we make a copy.
const view = JSON.parse(JSON.stringify(data.view));
const graph = graphology.Graph.from(view);
graphologyLibrary.layout.random.assign(graph);
const settings = graphologyLibrary.layoutForceAtlas2.inferSettings(graph);
graphologyLibrary.layoutForceAtlas2.assign(graph, { iterations: 10, settings });
graphologyLibrary.layoutNoverlap.assign(graph, { settings: { ratio: 3 } });
sigmaInstance.graph = graph;
sigmaInstance.refresh();
}
</script>
<LynxKiteNode {...$$props}>
{#if data.view}
<label>Color by
<select on:change={(evt) => updateNodeData(id, { params: { ...data.params, color_nodes_by: evt.currentTarget.value } })}>
<option value="">nothing</option>
{#each data.view.node_attributes as attr}
<option value={attr} selected={attr === data.params.color_nodes_by}>{attr}</option>
{/each}
</select></label>
{/if}
<div bind:this={sigmaCanvas} style="height: 200px; width: 200px;" >
</div>
</LynxKiteNode>
<style>
</style>
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