[−][src]Struct undo::history::Checkpoint
Wraps a history and gives it checkpoint functionality.
Implementations
impl<C: Command, F: FnMut(Signal), '_> Checkpoint<'_, C, F>
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pub fn apply(&mut self, target: &mut C::Target, command: C) -> Result<C>
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Calls the apply
method.
pub fn undo(&mut self, target: &mut C::Target) -> Result<C>
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Calls the undo
method.
pub fn redo(&mut self, target: &mut C::Target) -> Result<C>
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Calls the redo
method.
pub fn commit(self)
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Commits the changes and consumes the checkpoint.
pub fn cancel(self, target: &mut C::Target) -> Result<C>
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Cancels the changes and consumes the checkpoint.
Errors
If an error occur when canceling the changes, the error is returned and the remaining commands are not canceled.
pub fn queue(&mut self) -> Queue<'_, C, F>
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Returns a queue.
pub fn checkpoint(&mut self) -> Checkpoint<'_, C, F>
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Returns a checkpoint.
Trait Implementations
impl<'a, C: Command, F> From<&'a mut History<C, F>> for Checkpoint<'a, C, F>
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Auto Trait Implementations
impl<'a, C, F> RefUnwindSafe for Checkpoint<'a, C, F> where
C: RefUnwindSafe,
F: RefUnwindSafe,
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C: RefUnwindSafe,
F: RefUnwindSafe,
impl<'a, C, F> Send for Checkpoint<'a, C, F> where
C: Send,
F: Send,
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C: Send,
F: Send,
impl<'a, C, F> Sync for Checkpoint<'a, C, F> where
C: Sync,
F: Sync,
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C: Sync,
F: Sync,
impl<'a, C, F> Unpin for Checkpoint<'a, C, F>
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impl<'a, C, F> !UnwindSafe for Checkpoint<'a, C, F>
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,