Struct SimpleTreeBackend 

pub struct SimpleTreeBackend;

Simple tree view backend.

Nodes can only be populated manually.

Trait Implementations

impl TreeBackend for SimpleTreeBackend

type Context = ()

A context is provided as an argument to some of the trait functions.

type Error = ()

Returned as the Err of some of the trait functions.

type ID = ()

Each node has an id field of this type.

type Data = ()

For associating custom data with nodes.

fn tree_view(context: Self::Context) -> TreeView<Self>

Create a tree view with this backend.

fn tree_model(context: Self::Context) -> TreeModel<Self>

Create a tree model with this backend.

fn symbol(node: &Node<Self>, context: Self::Context) -> Symbol<'_>

Get a node’s symbol.

fn roots(context: Self::Context) -> Result<NodeList<Self>, Self::Error>

Get the root nodes.

fn populate( node: &mut Node<Self>, context: Self::Context, ) -> Result<(), Self::Error>

Populate a node’s children.

fn data( node: &mut Node<Self>, context: Self::Context, ) -> Result<Option<(Self::Data, bool)>, Self::Error>

Get a node’s data.

fn handle_selection_changed(cursive: &mut Cursive)

Called when the selected node changes, including when the selection is set to None.

fn handle_error(cursive: &mut Cursive, error: Self::Error)

Called when other backend functions return Err.