Enum ViewportSelector 

pub enum ViewportSelector {
    Center(String),
    Rids(Vec<String>),
    LabelEquals(String),
}

How Red UI picks the starting set of nodes for a viewport. Exactly one variant per request.

Variants

Center(String)

Expand outwards from a single named node id.

Rids(Vec<String>)

Seed the viewport with a specific RID list. Carries all requested ids verbatim — the contract guarantees no silent chunking on the way in, even when the list is large. This is the replacement for the frontend’s old RID-IN chunking workaround.

LabelEquals(String)

Seed the viewport with every node whose label / type matches the filter. Empty string = match-all (UI uses this for the initial “show me the whole collection, capped” load).

Implementations

impl ViewportSelector

pub fn seed_count(&self) -> usize

Number of explicit seed ids the selector carries. For LabelEquals and Center this is the obvious 1 / 0; for Rids it is the full input cardinality (the contract never drops ids on the way in).

Trait Implementations

impl Clone for ViewportSelector

fn clone(&self) -> ViewportSelector

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ViewportSelector

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ViewportSelector

impl PartialEq for ViewportSelector

fn eq(&self, other: &ViewportSelector) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ViewportSelector