Struct ItemTreeNodeArray

pub struct ItemTreeNodeArray<'a> { /* private fields */ }

The ItemTreeNodeArray provides tree walking code for the physical ItemTree stored in a ItemTree without stitching any inter-ItemTree links together!

Implementations

impl<'a> ItemTreeNodeArray<'a>

pub fn new(comp_ref_pin: &'a Pin<VRef<'a, ItemTreeVTable>>) -> Self

Create a new ItemTree from its raw data.

pub fn get(&self, index: u32) -> Option<&ItemTreeNode>

Get a ItemTreeNode

pub fn parent(&self, index: u32) -> Option<u32>

Get the parent of a node, returns None if this is the root node of this item tree.

pub fn next_sibling(&self, index: u32) -> Option<u32>

Returns the next sibling or None if this is the last sibling.

pub fn previous_sibling(&self, index: u32) -> Option<u32>

Returns the previous sibling or None if this is the first sibling.

pub fn first_child(&self, index: u32) -> Option<u32>

Returns the first child or None if this are no children or the index points to a DynamicTree.

pub fn last_child(&self, index: u32) -> Option<u32>

Returns the last child or None if this are no children or the index points to an DynamicTree.

pub fn node_count(&self) -> usize

Returns the number of nodes in the ItemTreeNodeArray

Trait Implementations

impl<'a> From<&'a [ItemTreeNode]> for ItemTreeNodeArray<'a>

fn from(item_tree: &'a [ItemTreeNode]) -> Self

Converts to this type from the input type.