Struct MindMapState 

pub struct MindMapState { /* private fields */ }

Validated document with private tree/index/selection and bounded history.

Every mutation is built on a candidate snapshot, validated, then committed. A failed operation cannot change data, selection, index, history or generation.

Implementations

impl MindMapState

pub fn new(data: MindMapData) -> Result<Self, MindMapError>

Validate and establish an initial history baseline.

pub fn data(&self) -> &MindMapData

Persistent document, without runtime state.

pub fn selection(&self) -> &[String]

Current selected IDs.

pub fn node(&self, id: &str) -> Option<&Node>

Node lookup includes collapsed descendants.

pub fn parent_id(&self, id: &str) -> Option<&str>

Parent ID. Root and unknown IDs return None; use node to distinguish.

pub fn revision(&self) -> u64

Monotonic generation for stale operation/measurement checks.

pub fn is_read_only(&self) -> bool

Whether document mutations are disabled.

pub fn set_read_only(&mut self, value: bool)

Disable/enable every mutation entry, including refresh and history.

pub fn set_history_limit(&mut self, limit: usize)

Maximum retained undo transactions; zero disables recording.

pub fn history_len(&self) -> (usize, usize)

Number of available undo and redo entries.

pub fn select(&mut self, ids: &[String]) -> Result<Vec<CoreEvent>, MindMapError>

Replace selection atomically, preserving traversal order and removing duplicates.

pub fn apply( &mut self, operation: Operation, ) -> Result<OperationResult, MindMapError>

Execute one checked transaction.

pub fn apply_with( &mut self, operation: Operation, options: OperationOptions, ) -> Result<OperationResult, MindMapError>

Execute with explicit history/event recording options.

pub fn undo(&mut self) -> Result<Vec<CoreEvent>, MindMapError>

Restore the previous document and selection snapshot.

pub fn redo(&mut self) -> Result<Vec<CoreEvent>, MindMapError>

Restore the next snapshot.

pub fn refresh( &mut self, data: MindMapData, ) -> Result<Vec<CoreEvent>, MindMapError>

Replace the document and reset selection/history. Validation happens first.

Trait Implementations

impl Clone for MindMapState

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MindMapState

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

Formats the value using the given formatter.