zng_ext_undo

Struct UndoTransaction

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pub struct UndoTransaction { /* private fields */ }
Expand description

Represents captured undo actions in an UNDO.transaction operation.

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impl UndoTransaction

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pub fn is_empty(&self) -> bool

If the transaction did not capture any undo action.

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pub fn commit(self)

Push all undo actions captured by the transaction into the current undo scope.

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pub fn commit_group(self, info: impl UndoInfo)

Push a single action in the current undo scope that undoes/redoes all the captured actions in the transaction.

Note that this will register a group item even if the transaction is empty.

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pub fn undo(self)

Cancel the transaction, undoes all captured actions.

This is the same as dropping the transaction.

Trait Implementations§

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impl Drop for UndoTransaction

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fn drop(&mut self)

Executes the destructor for this type. Read more

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