ReadonlycontainerSize of the container the floating group is dragged within.
ReadonlygroupThe floating group being dragged.
ReadonlyothersBounds of the other floating groups (relative to the same container), snapshotted at drag start.
ReadonlyproposedProposed top-left + size this frame, in container pixels (pre-clamp).
Context handed to DockviewOptions.transformFloatingGroupDrag on each pointer-move frame while a floating group is being dragged.