Struct cursive_core::menu::Tree

pub struct Tree {
    pub children: Vec<Item>,
}

Root of a menu tree.

Fields

children: Vec<Item>

Menu items

Implementations

impl Tree

pub fn new() -> Self

Creates a new, empty tree.

pub fn clear(&mut self)

Remove every children from this tree.

pub fn insert(&mut self, i: usize, item: Item)

Inserts an item at the given position.

pub fn insert_delimiter(&mut self, i: usize)

Inserts a delimiter at the given position.

pub fn add_delimiter(&mut self)

Adds a delimiter to the end of this tree.

pub fn delimiter(self) -> Self

Adds a delimiter to the end of this tree - chainable variant.

pub fn add_leaf<S, F>(&mut self, label: S, cb: F)where
    S: Into<String>,
    F: 'static + Fn(&mut Cursive),

Adds a actionnable leaf to the end of this tree.

pub fn insert_leaf<S, F>(&mut self, i: usize, label: S, cb: F)where
    S: Into<String>,
    F: 'static + Fn(&mut Cursive),

Inserts a leaf at the given position.

pub fn leaf<S, F>(self, label: S, cb: F) -> Selfwhere
    S: Into<String>,
    F: 'static + Fn(&mut Cursive),

Adds a actionnable leaf to the end of this tree - chainable variant.

pub fn insert_subtree<S>(&mut self, i: usize, label: S, tree: Tree)where
    S: Into<String>,

Inserts a subtree at the given position.

pub fn item(self, item: Item) -> Self

Adds an item to the end of this tree.

Chainable variant.

pub fn add_item(&mut self, item: Item)

Adds an item to the end of this tree.

pub fn add_subtree<S>(&mut self, label: S, tree: Tree)where
    S: Into<String>,

Adds a submenu to the end of this tree.

pub fn subtree<S>(self, label: S, tree: Tree) -> Selfwhere
    S: Into<String>,

Adds a submenu to the end of this tree - chainable variant.

pub fn get_mut(&mut self, i: usize) -> Option<&mut Item>

Looks for the child at the given position.

Returns None if i >= self.len().

pub fn get_subtree(&mut self, i: usize) -> Option<&mut Tree>

Returns the item at the given position.

Returns None if i > self.len() or if the item is not a subtree.

pub fn find_item(&mut self, label: &str) -> Option<&mut Item>

Looks for a child with the given label.

Returns None if no such label was found.

pub fn find_subtree(&mut self, label: &str) -> Option<&mut Tree>

Looks for a subtree with the given label.

pub fn find_position(&mut self, label: &str) -> Option<usize>

Returns the position of a child with the given label.

Returns None if no such label was found.

pub fn remove(&mut self, i: usize)

Removes the item at the given position.

pub fn len(&self) -> usize

Returns the number of direct children in this node.

• Includes delimiters.
• Does not count nested children.

pub fn is_empty(&self) -> bool

Returns true if this tree has no children.

Trait Implementations

impl Clone for Tree

fn clone(&self) -> Tree

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for Tree

fn default() -> Tree

Returns the “default value” for a type.