Trait sourceview4::prelude::UndoManagerExt

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pub trait UndoManagerExt: IsA<UndoManager> + Sealed + 'static {
    // Provided methods
    fn begin_not_undoable_action(&self) { ... }
    fn can_redo(&self) -> bool { ... }
    fn can_redo_changed(&self) { ... }
    fn can_undo(&self) -> bool { ... }
    fn can_undo_changed(&self) { ... }
    fn end_not_undoable_action(&self) { ... }
    fn redo(&self) { ... }
    fn undo(&self) { ... }
    fn connect_can_redo_changed<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId { ... }
    fn emit_can_redo_changed(&self) { ... }
    fn connect_can_undo_changed<F: Fn(&Self) + 'static>(
        &self,
        f: F
    ) -> SignalHandlerId { ... }
    fn emit_can_undo_changed(&self) { ... }
}

Expand description

Trait containing all UndoManager methods.

Implementors

UndoManager

Provided Methods§

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fn begin_not_undoable_action(&self)

Begin a not undoable action on the buffer. All changes between this call and the call to end_not_undoable_action() cannot be undone. This function should be re-entrant.

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fn can_redo(&self) -> bool

Get whether there are redo operations available.

Returns

true if there are redo operations available, false otherwise

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fn can_redo_changed(&self)

Emits the can-redo-changed signal.

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fn can_undo(&self) -> bool

Get whether there are undo operations available.

Returns

true if there are undo operations available, false otherwise

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fn can_undo_changed(&self)

Emits the can-undo-changed signal.

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fn end_not_undoable_action(&self)

Ends a not undoable action on the buffer.

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fn redo(&self)

Perform a single redo. Calling this function when there are no redo operations available is an error. Use can_redo() to find out if there are redo operations available.

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fn undo(&self)

Perform a single undo. Calling this function when there are no undo operations available is an error. Use can_undo() to find out if there are undo operations available.

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