Struct Tree 

pub struct Tree { /* private fields */ }

Implementations

impl Tree

pub fn new() -> Self

pub fn push( &mut self, parent: Option<NodeId>, name: impl Into<String>, is_container: bool, action: ActionValues, ) -> NodeId

pub fn push_with_detail( &mut self, parent: Option<NodeId>, name: impl Into<String>, detail: Option<String>, is_container: bool, action: ActionValues, ) -> NodeId

pub fn node(&self, id: NodeId) -> &Node

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn root_ids(&self) -> &[NodeId]

pub fn is_leaf(&self, id: NodeId) -> bool

True when the node cannot be expanded.

pub fn branches(&self) -> impl Iterator<Item = (NodeId, Option<NodeId>)> + '_

All expandable nodes as (id, parent) pairs, in tree order.

Trait Implementations

impl Debug for Tree

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

Formats the value using the given formatter.

impl Default for Tree

fn default() -> Tree

Returns the “default value” for a type.

impl TreeModel for Tree

type Id = usize

The node identifier type.

fn roots(&self) -> impl Iterator<Item = NodeId> + '_

Returns forest roots in deterministic order.

fn children(&self, id: NodeId) -> TreeChildren<'_, NodeId>

Returns the node’s child state and loaded children.

fn revision(&self) -> TreeRevision

Returns the revision of the model structure and display data.

fn size_hint(&self) -> usize

Returns an approximate number of available nodes.