Struct TreeNode 

pub struct TreeNode { /* private fields */ }

One node of a Tree, identified by a key that stays the same while the tree changes.

Implementations

impl TreeNode

pub fn new(key: impl Into<String>, label: impl Into<String>) -> Self

A leaf named label, identified by key.

pub fn children(self, children: impl IntoIterator<Item = Self>) -> Self

Child nodes; a node with children can be opened.

pub fn expandable(self, expandable: bool) -> Self

Marks a node as openable before its children are known, for children loaded when it opens. Opening it sends Tree::on_expand; supply the children in a later frame.

pub fn expanded(self, expanded: bool) -> Self

Whether the node is open and shows its children.

pub fn loading(self, loading: bool) -> Self

Marks the node’s children as being loaded. A load that takes longer than about 300 ms shows a spinner in place of the chevron, which then stays at least about 500 ms; quicker loads keep the chevron, so they never flash a spinner.

pub fn icon(self, key: impl Into<String>, color: Option<&str>) -> Self

Icon key drawn before the label, optionally in theme colour color.

pub fn detail(self, detail: impl Into<String>) -> Self

Faint text aligned right, e.g. a count.

pub fn meter(self, fraction: f32, tone: impl Into<String>) -> Self

A small block meter at the right of the row, left of the detail, filled to fraction (0 to 1) in theme colour tone, such as the progress towards a goal. A faint row draws it faint too. A row too narrow for its label and the meter drops the meter first, so the name is never cut for it; in the ASCII glyph mode it fills whole cells.

pub fn faint(self, faint: bool) -> Self

Draws the node faint while keeping it selectable.

Trait Implementations

impl Clone for TreeNode

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TreeNode

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

Formats the value using the given formatter.

impl Eq for TreeNode

impl PartialEq for TreeNode

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TreeNode