Struct TheUndoStack 

pub struct TheUndoStack {
    pub stack: Vec<TheUndo>,
    pub index: isize,
}

Represents a stack of undo/redo operations.

This struct manages a stack of TheUndo instances, allowing for undo and redo functionality.

Fields

stack: Vec<TheUndo>

index: isize

Implementations

impl TheUndoStack

pub fn new() -> TheUndoStack

Creates a new TheUndoStack instance.

Returns

A new instance of TheUndoStack.

pub fn clear(&mut self)

Clears the undo stack.

This method resets the stack and index to their default state.

pub fn has_undo(&self) -> bool

Checks if an undo operation is possible.

Returns

true if an undo operation can be performed, false otherwise.

pub fn has_redo(&self) -> bool

Checks if a redo operation is possible.

Returns

true if a redo operation can be performed, false otherwise.

pub fn add(&mut self, undo: TheUndo)

Adds a new TheUndo instance to the stack.

Arguments

• undo - An instance of TheUndo to be added to the stack.

pub fn undo(&mut self) -> (TheId, String)

Performs an undo operation and returns the relevant data.

Returns

A tuple containing the undo type and undo data.

pub fn redo(&mut self) -> (TheId, String)

Performs a redo operation and returns the relevant data.

Returns

A tuple containing the redo type and redo data.

Trait Implementations

impl Clone for TheUndoStack

fn clone(&self) -> TheUndoStack

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TheUndoStack

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

Formats the value using the given formatter.

impl Default for TheUndoStack

fn default() -> TheUndoStack

Creates a new TheUndoStack instance with default values.

Returns

A new instance of TheUndoStack with empty stack and index set to -1.

impl<'de> Deserialize<'de> for TheUndoStack

fn deserialize<__D>( __deserializer: __D, ) -> Result<TheUndoStack, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for TheUndoStack

fn eq(&self, other: &TheUndoStack) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for TheUndoStack

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for TheUndoStack