[−][src]Struct undo::history::Queue
Wraps a record and gives it batch queue functionality.
Examples
let mut string = String::new(); let mut record = Record::new(); let mut queue = record.queue(); queue.apply(Add('a')); queue.apply(Add('b')); queue.apply(Add('c')); assert_eq!(string, ""); queue.commit(&mut string)?; assert_eq!(string, "abc");
Implementations
impl<C: Command, F: FnMut(Signal), '_> Queue<'_, C, F>
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pub fn apply(&mut self, command: C)
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Queues an apply
action.
pub fn undo(&mut self)
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Queues an undo
action.
pub fn redo(&mut self)
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Queues a redo
action.
pub fn commit(self, target: &mut C::Target) -> Result<C>
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Applies the queued commands.
Errors
If an error occurs, it stops applying the commands and returns the error.
pub fn cancel(self)
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Cancels the queued actions.
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
Auto Trait Implementations
impl<'a, C, F> RefUnwindSafe for Queue<'a, C, F> where
C: RefUnwindSafe,
F: RefUnwindSafe,
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C: RefUnwindSafe,
F: RefUnwindSafe,
impl<'a, C, F> Send for Queue<'a, C, F> where
C: Send,
F: Send,
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C: Send,
F: Send,
impl<'a, C, F> Sync for Queue<'a, C, F> where
C: Sync,
F: Sync,
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C: Sync,
F: Sync,
impl<'a, C, F> Unpin for Queue<'a, C, F> where
C: Unpin,
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C: Unpin,
impl<'a, C, F> !UnwindSafe for Queue<'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>,