Struct Tree 

pub struct Tree {
    pub(super) nodes: Vec<Node>,
    pub(super) roots: Vec<usize>,
}

Nodes in a flat arena, so a node’s index can ride in a tree view item’s lParam.

Fields

nodes: Vec<Node>

roots: Vec<usize>

The top-level category rows, in display order.

Implementations

impl Tree

pub fn is_empty(&self) -> bool

pub fn len(&self) -> usize

pub fn node(&self, index: usize) -> &Node

pub fn roots(&self) -> &[usize]

pub fn children(&self, index: usize) -> &[usize]

pub fn path_of(&self, index: usize) -> Vec<&str>

Labels from the category row down to index, inclusive.

pub fn category_of(&self, index: usize) -> &str

The category as the server spells it, for comparing with CATEGORY_*.

pub fn leaves_under(&self, index: Option<usize>) -> Vec<usize>

Every leaf under index, or in the whole tree for None, in display order.

fn collect_leaves(&self, index: usize, leaves: &mut Vec<usize>)

pub(super) fn push(&mut self, node: Node, parent: Option<usize>) -> usize

impl Tree

pub fn build( game: &str, packages: &[PackageInfo], cached: &[CachedPackage], installed: &[String], ) -> Tree

The tree for ONE game: what the server listed, what the cache holds and what the game folder’s ledger has installed. A leaf starts checked when it is installed or cached, because Apply uninstalls what is unchecked.

fn insert(&mut self, row: Row)

fn child_named(&mut self, parent: Option<usize>, label: &str) -> usize

The grouping child of parent with this label, created when missing.

impl Tree

pub fn check_of(&self, index: usize) -> Check

A leaf’s own checkbox, or a grouping row’s derived from its leaves.

pub fn set_checked(&mut self, index: usize, checked: bool)

Checks or unchecks index and everything under it; the cache is never touched.

pub fn uncheck_key(&mut self, key: &str)

Unchecks the leaf for key, for a package scene 4b could not bring: scene 5 must not offer what the install has no payload for.

pub fn checked_leaves(&self) -> Vec<usize>

pub fn checked_keys(&self) -> Vec<String>

The keys of every checked leaf, in display order.

pub fn categories_missing_a_pick( &self, choice_categories: &[&str], ) -> Vec<String>

The choice categories present in the tree with nothing checked under them; an operator’s new folder must not become a question.

pub fn categories_not_ready<'a>( &self, choice_categories: &[&'a str], is_cached: &dyn Fn(&str) -> bool, ) -> Vec<&'a str>

The choice categories with nothing to configure: no checked leaf whose payload is_cached says is here. Every category the game’s schema asks about counts, present in this tree or not, since scene 5 cannot make a pick from nothing.

pub fn checked_needing_download(&self) -> Vec<String>

The checked leaves scene 6 fetches, updates included.

Trait Implementations

impl Clone for Tree

fn clone(&self) -> Tree

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Tree

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Tree

fn default() -> Tree

Returns the “default value” for a type.