Struct CommandHistory 

pub struct CommandHistory { /* private fields */ }

Command history manager

Implementations

impl CommandHistory

pub fn new(config: HistoryConfig) -> Self

pub fn execute(&mut self, command: Box<dyn Command>) -> CommandResult

Execute a command and add to history

pub fn undo(&mut self) -> Option<CommandResult>

Undo the last command

pub fn redo(&mut self) -> Option<CommandResult>

Redo the last undone command

pub fn can_undo(&self) -> bool

Check if undo is available

pub fn can_redo(&self) -> bool

Check if redo is available

pub fn undo_count(&self) -> usize

Get number of undoable commands

pub fn redo_count(&self) -> usize

Get number of redoable commands

pub fn undo_description(&self) -> Option<&str>

Get description of next undo command

pub fn redo_description(&self) -> Option<&str>

Get description of next redo command

pub fn begin_group(&mut self) -> GroupId

Start a command group

pub fn end_group(&mut self)

End current command group

pub fn execute_group<I>(&mut self, commands: I) -> Vec<CommandResult>

where I: IntoIterator<Item = Box<dyn Command>>,

Execute multiple commands as a group

pub fn create_checkpoint(&mut self, name: impl Into<String>) -> CheckpointId

Create a checkpoint at current position

pub fn restore_checkpoint(&mut self, id: CheckpointId) -> bool

Restore to a checkpoint

pub fn get_checkpoint(&self, id: CheckpointId) -> Option<&Checkpoint>

Get checkpoint by ID

pub fn checkpoints(&self) -> impl Iterator<Item = &Checkpoint>

List all checkpoints

pub fn clear(&mut self)

Clear all history

pub fn memory_usage(&self) -> usize

Get current memory usage

pub fn tick(&mut self, delta_ms: u64)

Update timestamp (call each frame or periodically)

pub fn pause(&mut self)

Pause recording

pub fn resume(&mut self)

Resume recording

pub fn is_recording(&self) -> bool

Check if recording

pub fn on_event(&mut self, callback: HistoryCallback)

Add event listener

Trait Implementations

impl Default for CommandHistory

fn default() -> Self

Returns the “default value” for a type.