Trait rundo_types::Rundo

pub trait Rundo {
    type Op: Debug;
    fn dirty(&self) -> bool;
    fn change_op(&mut self) -> Option<Self::Op>;
    fn reset(&mut self);
    fn back(&mut self, op: &Self::Op);
    fn forward(&mut self, op: &Self::Op);
}

Every rundo node must implement Rundo trait to support undo/redo. In most of case, you can derive Rundo, of course, you can implement it by yourself.

Associated Types

type Op: Debug

Required Methods

fn dirty(&self) -> bool

if this node has been changed between from the last step to current.

fn change_op(&mut self) -> Option<Self::Op>

Use Op to describe the change infos.

fn reset(&mut self)

Reset the node change state which mean changes has been record by workspace, or changes will be ignore.

fn back(&mut self, op: &Self::Op)

Use an Op and back to the previous data status

fn forward(&mut self, op: &Self::Op)

Go to the next version of the data should be with a Op.

Implementors

• impl<T> Rundo for ValueType<T> where
    T: Clone + PartialEq + Debug + Primitive,  type Op = VtOp<T>;
• impl Rundo for ValueType<String> type Op = Vec<StrOP>;