Struct PanelSequence 

pub struct PanelSequence { /* private fields */ }

Flat ordered list of panel IDs, separate from tree topology.

Tracks the logical order of panels for focus navigation and strategy-based mutations (add, remove, move).

Implementations

impl PanelSequence

pub fn len(&self) -> usize

Number of panels in the sequence.

pub fn is_empty(&self) -> bool

Whether the sequence is empty.

pub fn get(&self, index: usize) -> Option<PanelId>

Get the panel at the given index.

pub fn index_of(&self, pid: PanelId) -> Option<usize>

Find the index of a panel, if present.

pub fn push(&mut self, pid: PanelId)

Append a panel to the end.

pub fn remove(&mut self, pid: PanelId) -> Option<usize>

Remove a panel by id. Returns its former index, or None if absent.

pub fn move_to(&mut self, pid: PanelId, new_index: usize) -> Option<usize>

Move a panel to a new index. Returns None if the panel is absent or the target index is out of bounds.

pub fn neighbor_after_removal(&self, removed_index: usize) -> Option<PanelId>

After removing the panel at removed_index, return the best neighbor to receive focus. Prefers the panel that was after the removed one; falls back to the one before. Returns None if the sequence is empty after removal.

pub fn iter(&self) -> impl Iterator<Item = PanelId> + '_

Iterate over panel IDs in order.

pub fn as_slice(&self) -> &[PanelId]

View the underlying slice.

Trait Implementations

impl Clone for PanelSequence

fn clone(&self) -> PanelSequence

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PanelSequence

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

Formats the value using the given formatter.

impl Default for PanelSequence

fn default() -> PanelSequence

Returns the “default value” for a type.