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export type LayoutWarningCode =
| 'UNRESOLVED_SEQUENCE_FLOW'
| 'CROSS_CONTAINER_FLOW'
| 'ROUTE_INTERSECTS_OBSTACLE'
| 'ROUTE_INVALID_CONNECTION_POINTS'
| 'ROUTE_NOT_ORTHOGONAL'
| 'SHAPE_OVERLAPS_SHAPE'
| 'LABEL_OVERLAPS_ELEMENT'
| 'CONTAINER_OVERFLOW';
export interface LayoutWarning {
code: LayoutWarningCode;
elementId?: string;
message: string;
}
export function addWarning(warnings: LayoutWarning[] | undefined, warning: LayoutWarning): void {
warnings?.push(warning);
}
function isContainerShape(el: any): boolean {
const type = el.bpmnElement?.$type;
return (
type === 'bpmn:Participant' ||
type === 'bpmn:Lane' ||
(type === 'bpmn:SubProcess' && el.isExpanded === true)
);
}
function areShapesAttached(s1: any, s2: any): boolean {
const a1 = s1.bpmnElement?.attachedToRef?.id || s1.bpmnElement?.attachedToRef;
const a2 = s2.bpmnElement?.attachedToRef?.id || s2.bpmnElement?.attachedToRef;
return a1 === s2.bpmnElement?.id || a2 === s1.bpmnElement?.id;
}
function checkShapeOverlaps(flowShapes: any[], warnings: LayoutWarning[]): void {
for (let i = 0; i < flowShapes.length; i++) {
for (let j = i + 1; j < flowShapes.length; j++) {
const s1 = flowShapes[i];
const s2 = flowShapes[j];
if (areShapesAttached(s1, s2)) {
continue;
}
if (boxesOverlap(s1.bounds, s2.bounds)) {
addWarning(warnings, {
code: 'SHAPE_OVERLAPS_SHAPE',
elementId: s1.bpmnElement?.id,
message: `Shape "${s1.bpmnElement?.id}" overlaps with shape "${s2.bpmnElement?.id}"`,
});
}
}
}
}
function checkContainerEnclosure(
containers: any[],
shapesMap: Map<string, any>,
warnings: LayoutWarning[]
): void {
for (const c of containers) {
const flowElements = c.bpmnElement?.flowElements || [];
for (const child of flowElements) {
const childShape = shapesMap.get(child.id);
if (!childShape?.bounds) {
continue;
}
const b = childShape.bounds;
const cb = c.bounds;
if (
b.x < cb.x ||
b.y < cb.y ||
b.x + b.width > cb.x + cb.width ||
b.y + b.height > cb.y + cb.height
) {
addWarning(warnings, {
code: 'CONTAINER_OVERFLOW',
elementId: c.bpmnElement?.id,
message: `Container "${c.bpmnElement?.id}" does not enclose child element "${child.id}"`,
});
}
}
}
}
function checkEdgeOrthogonality(edges: any[], warnings: LayoutWarning[]): void {
for (const edge of edges) {
if (edge.bpmnElement?.$type !== 'bpmn:SequenceFlow') {
continue;
}
const waypoints = edge.waypoint;
for (let i = 0; i < waypoints.length - 1; i++) {
const p1 = waypoints[i];
const p2 = waypoints[i + 1];
if (p1.x !== p2.x && p1.y !== p2.y) {
addWarning(warnings, {
code: 'ROUTE_NOT_ORTHOGONAL',
elementId: edge.bpmnElement?.id,
message: `Sequence flow "${edge.bpmnElement?.id}" contains non-orthogonal segment`,
});
break;
}
}
}
}
interface SegmentObstacleCheck {
p1: any;
p2: any;
edgeId: string;
srcId?: string;
tgtId?: string;
}
function checkSegmentObstacles(
seg: SegmentObstacleCheck,
flowShapes: any[],
warnings: LayoutWarning[]
): void {
for (const shape of flowShapes) {
const shapeId = shape.bpmnElement?.id;
if (shapeId === seg.srcId || shapeId === seg.tgtId) {
continue;
}
if (segmentCrossesBox(seg.p1, seg.p2, shape.bounds)) {
addWarning(warnings, {
code: 'ROUTE_INTERSECTS_OBSTACLE',
elementId: seg.edgeId,
message: `Edge "${seg.edgeId}" intersects shape "${shapeId}"`,
});
}
}
}
function checkEdgeObstacles(edges: any[], flowShapes: any[], warnings: LayoutWarning[]): void {
for (const edge of edges) {
const waypoints = edge.waypoint;
const srcId = edge.bpmnElement?.sourceRef?.id;
const tgtId = edge.bpmnElement?.targetRef?.id;
const edgeId = edge.bpmnElement?.id;
for (let i = 0; i < waypoints.length - 1; i++) {
checkSegmentObstacles(
{ p1: waypoints[i], p2: waypoints[i + 1], edgeId, srcId, tgtId },
flowShapes,
warnings
);
}
}
}
export function collectPlaneDiagnostics(plane: any, warnings: LayoutWarning[]): void {
const elements = plane?.planeElement || [];
const flowShapes: any[] = [];
const containers: any[] = [];
const edges: any[] = [];
const shapesMap = new Map<string, any>();
for (const el of elements) {
if (el.$type === 'bpmndi:BPMNShape' && el.bounds) {
shapesMap.set(el.bpmnElement?.id, el);
if (isContainerShape(el)) {
containers.push(el);
} else {
flowShapes.push(el);
}
} else if (el.$type === 'bpmndi:BPMNEdge' && Array.isArray(el.waypoint)) {
edges.push(el);
}
}
checkShapeOverlaps(flowShapes, warnings);
checkContainerEnclosure(containers, shapesMap, warnings);
checkEdgeOrthogonality(edges, warnings);
checkEdgeObstacles(edges, flowShapes, warnings);
}
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