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import { derived } from 'svelte/store';
import { isEdgeVisible, getEdgePosition, getElevatedEdgeZIndex } from '@xyflow/system';
export function getVisibleEdges(store) {
const visibleEdges = derived([
store.edges,
store.nodes,
store.nodeLookup,
store.onlyRenderVisibleElements,
store.viewport,
store.width,
store.height
], ([edges, , nodeLookup, onlyRenderVisibleElements, viewport, width, height]) => {
const visibleEdges = onlyRenderVisibleElements && width && height
? edges.filter((edge) => {
const sourceNode = nodeLookup.get(edge.source);
const targetNode = nodeLookup.get(edge.target);
return (sourceNode &&
targetNode &&
isEdgeVisible({
sourceNode,
targetNode,
width,
height,
transform: [viewport.x, viewport.y, viewport.zoom]
}));
})
: edges;
return visibleEdges;
});
return derived([visibleEdges, store.nodes, store.nodeLookup, store.connectionMode, store.onerror], ([visibleEdges, , nodeLookup, connectionMode, onerror]) => {
const layoutedEdges = visibleEdges.reduce((res, edge) => {
const sourceNode = nodeLookup.get(edge.source);
const targetNode = nodeLookup.get(edge.target);
if (!sourceNode || !targetNode) {
return res;
}
const edgePosition = getEdgePosition({
id: edge.id,
sourceNode,
targetNode,
sourceHandle: edge.sourceHandle || null,
targetHandle: edge.targetHandle || null,
connectionMode,
onError: onerror
});
if (edgePosition) {
res.push({
...edge,
zIndex: getElevatedEdgeZIndex({
selected: edge.selected,
zIndex: edge.zIndex,
sourceNode,
targetNode,
elevateOnSelect: false
}),
...edgePosition
});
}
return res;
}, []);
return layoutedEdges;
});
}
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