Trait ItemDelegate 

pub trait ItemDelegate<I: Item>:
    Clone
    + Send
    + 'static {
    // Required methods
    fn height(&self) -> usize;
    fn spacing(&self) -> usize;
    fn render(
        &self,
        item: &I,
        index: usize,
        selected: bool,
        width: usize,
    ) -> String;

    // Provided method
    fn update(&mut self, _msg: &Message, _item: &mut I) -> Option<Cmd> { ... }
}

Trait for rendering list items.

Required Methods

fn height(&self) -> usize

Returns the height of each item in lines.

fn spacing(&self) -> usize

Returns the spacing between items.

fn render(&self, item: &I, index: usize, selected: bool, width: usize) -> String

Renders an item.

Provided Methods

fn update(&mut self, _msg: &Message, _item: &mut I) -> Option<Cmd>

Updates the delegate (optional).

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<I: Item> ItemDelegate<I> for DefaultDelegate