utilities interactionDragCoordinator.ts

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430x
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  type DragOwner = 'orientation-controller';
 
const dragOwnerByViewportId = new Map<string, DragOwner>();
 
export function beginOwnedDrag(viewportId: string, owner: DragOwner): boolean {
  if (dragOwnerByViewportId.has(viewportId)) {
    return false;
  }
 
  dragOwnerByViewportId.set(viewportId, owner);
  return true;
}
 
export function endOwnedDrag(viewportId: string, owner: DragOwner): void {
  if (dragOwnerByViewportId.get(viewportId) === owner) {
    dragOwnerByViewportId.delete(viewportId);
  }
}
 
export function isDragOwnedBy(viewportId: string, owner: DragOwner): boolean {
  return dragOwnerByViewportId.get(viewportId) === owner;
}