ReadonlyonFires with the dragged group when a floating group's move-drag ends (pointerup / cancel); the signal to tear down the guides and per-drag state. A resize-end fires it too; with no active drag session that is a harmless no-op.
ReadonlyonFires with the dragged group the first time a floating group move-drag actually moves; the signal to (re)build per-drag state from a clean slate. Tears down any session left over from a drag that ended without a normal pointerup (e.g. a redock long-press, which aborts without an end event).
ReadonlyoptionsThe positioning parent for floating groups, in whose coordinate space the
guide overlay is drawn (container-relative, never client/viewport space).
This is the same element floats are placed in
(_floatingOverlayHost ?? gridview.element).
The live floating windows other than exclude, each with its group
identity and container-relative box; the snap-together detector needs
identity (which neighbour to dock into), not just geometry.
The underlying grid's splitter (sash) rectangles, in the same
container-relative space, for the optional snapTargets.splitters source.
Empty when there are no sashes.
Commit a snap-together: dock / merge the dragged float into a target group
at position. Reuses the existing move primitive (moveGroupOrPanel) so
events + undo cover it; a no-op when dragged === target.
The narrow surface the Smart Guides service needs from the host (
DockviewComponent). The service owns candidate generation, snap resolution and the guide overlay; it only reads the floating container (for guide geometry) and the drag-end signal from the host, never mutating layout. The per-frame snap itself is driven by the component composing the service into the float drag loop'stransformFloatingGroupDrag, so it is not a host member.