Struct TreeView 

pub struct TreeView { /* private fields */ }

A list of items that open to show more items: a chooser, a menu of a module, the structure of a document. Arrows move and open, Enter opens the item, Space checks it or selects it. With a height, only the visible lines are built.

use ravenrs_reactive::State;
use ravenrs_widgets::{TreeNode, TreeView, Ui};

let selected = State::new(None::<String>);
let tree = TreeView::new(vec![
    TreeNode::new("sales", "Sales").child(TreeNode::new("orders", "Orders")),
    TreeNode::new("stock", "Stock"),
])
.selected(selected.binding());
let mut ui = Ui::new(tree, ravenrs_style::Theme::raven_dark());
ui.update();

Implementations

impl TreeView

pub fn new(nodes: Vec<TreeNode>) -> Self

A tree of these items, all closed.

pub fn selected(self, selected: Binding<Option<String>>) -> Self

The item selected, by key.

pub fn expanded(self, expanded: Binding<BTreeSet<String>>) -> Self

The items open, by key, to keep or to set from outside.

pub fn checked(self, checked: Binding<BTreeSet<String>>) -> Self

Shows a check box on every line, bound to the keys of the items at the tips. Checking a branch checks everything under it, and a branch partly under check says so.

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

Shows only the items with this text, and the branches that lead to them.

pub fn on_open(self, handler: impl Fn(&str) + 'static) -> Self

Runs with the key on Enter or on a double click.

pub fn on_expand(self, handler: impl Fn(&str) + 'static) -> Self

Runs with the key when an item opens, to bring what is under a TreeNode::lazy one.

pub fn height(self, height: f32) -> Self

Scrolls inside this height, building only the lines in sight.

pub fn row_height(self, height: f32) -> Self

Height of a line in logical pixels. 32 by default.

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

The name screen readers announce.

Trait Implementations

impl Debug for TreeView

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

Formats the value using the given formatter.

impl View for TreeView

fn build(&self, cx: &mut BuildCx<'_>) -> NodeId

Creates this view’s node for the current build.

fn type_name(&self) -> &'static str

The name the diagnostics panel shows this view’s cost under.