zng::undo

Struct UndoStackInfo

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pub struct UndoStackInfo {
    pub stack: Vec<(DInstant, Arc<dyn UndoInfo>)>,
    pub undo_interval: Duration,
}
Expand description

Snapshot of the undo or redo stacks in an UNDO scope.

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§stack: Vec<(DInstant, Arc<dyn UndoInfo>)>

Clones the timestamp and info of all entries in the current undo stack.

In an undo list the latest undo action (first to undo) is the last entry in the list and has the latest timestamp.

In an redo list the latest undone action is the last entry (first to redo). Note that the timestamp marks the moment the original undo registered the action, so the newest timestamp is in the first entry for redo lists.

§undo_interval: Duration

Grouping interval.

Implementations§

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impl UndoStackInfo

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pub fn iter_groups(&self) -> impl DoubleEndedIterator

Iterate over the stack, grouped by undo_interval.

Trait Implementations§

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impl Clone for UndoStackInfo

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fn clone(&self) -> UndoStackInfo

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more

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