Module selection 

Renderer-neutral selection helpers.

These helpers turn canvas-space marquee rectangles into ordered selection state without depending on a renderer, DOM measurement, or platform input events.

Structs

NodeDragStartSelectionInput

Input for resolving the selection side-effect of starting a node drag.

NodePointerDownDecision

Combined decision for a node pointer-down that may update selection and enable node dragging.

NodePointerDownInput

Input for resolving the first node pointer-down decision.

SelectionBoxDecision

Resolved selection-box outcome ready to be applied by a store or inspected by tests.

SelectionBoxInput

Renderer-neutral input for a canvas-space marquee selection gesture.

SelectionBoxOptions

Options for applying a marquee selection box.

SelectionBoxResult

Ordered selection result produced by a marquee selection box.

SelectionDragActivationInput

Screen-space input for deciding whether a marquee selection drag should activate.

SelectionPointerClaimInput

Normalized pointer state for deciding whether selection should claim a drag gesture first.

Enums

NodeDragStartSelectionAction

Selection mutation implied by starting a node drag.

SelectionModifier

Modifier state that controls whether a selection gesture adds to existing selection.

SelectionPointerClaim

Selection’s current ownership status over a normalized pointer drag.

Functions

compute_selection_box

Computes the ordered selection state for a canvas-space marquee selection box.

resolve_node_drag_start_selection

Resolves XyFlow-compatible selection behavior for a node-drag start.

resolve_node_pointer_down

Resolves the first headless decision for a node pointer-down.

resolve_selection_box

Resolves the ordered selection state for a canvas-space marquee selection gesture.

resolve_selection_pointer_claim

selection_drag_threshold_met

Returns whether pointer movement should start a marquee selection drag.