Struct TextEditCommand 

pub struct TextEditCommand {
    pub name: &'static str,
    pub before: TextEditState,
    pub after: TextEditState,
    pub target: Rc<RefCell<TextEditState>>,
}

Stores before/after snapshots of TextEditState and a shared reference to the live state so that undo/redo can restore it.

Fields

name: &'static str

before: TextEditState

after: TextEditState

target: Rc<RefCell<TextEditState>>

Trait Implementations

impl UndoRedoCommand for TextEditCommand

fn name(&self) -> &str

Short human-readable description, e.g. "insert text".

fn do_it(&mut self)

Re-apply the operation (called on Redo).

fn undo_it(&mut self)

Reverse the operation (called on Undo).