Type Alias Indenter

pub type Indenter = fn(&dyn Children, usize) -> String;

Function type for generating indentation strings for nested tree content.

An Indenter generates the indentation used for child nodes that appear below their parent. This creates the visual connection lines between parent and nested content. The indentation typically differs based on whether there are more siblings following (│ continues the line) or if this is the last child (spaces for clean termination).

Arguments

• children - The children collection being indented
• index - The zero-based index of the current child

Returns

A string representing the indentation for nested content under this child

Examples

use lipgloss_tree::{Children, Indenter};

let custom_indenter: Indenter = |children, index| {
    if index == children.length() - 1 {
        "    ".to_string()  // Spaces for last child
    } else {
        "│   ".to_string()  // Vertical line for continuing branches
    }
};