Struct SimpleTreeBackend 

pub struct SimpleTreeBackend;

Simple tree view backend.

Nodes can only be populated manually.

Trait Implementations

impl TreeBackend<(), (), (), ()> for SimpleTreeBackend

fn tree_view(context: ContextT) -> TreeView<Self, ContextT, ErrorT, IdT, DataT>

Create a tree view with this backend.

fn tree_model( context: ContextT, ) -> TreeModel<Self, ContextT, ErrorT, IdT, DataT>

Create a tree model with this backend.

fn symbol( node: &Node<Self, ContextT, ErrorT, IdT, DataT>, context: ContextT, ) -> Symbol<'_>

Get a node’s symbol.

fn roots( context: ContextT, ) -> Result<NodeList<Self, ContextT, ErrorT, IdT, DataT>, ErrorT>

Get the root nodes.

fn populate( node: &mut Node<Self, ContextT, ErrorT, IdT, DataT>, context: ContextT, ) -> Result<(), ErrorT>

Populate a node’s children.

fn data( node: &mut Node<Self, ContextT, ErrorT, IdT, DataT>, context: ContextT, ) -> Result<Option<(DataT, bool)>, ErrorT>

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: ErrorT)

Called when other backend functions return Err.