Struct zng_ext_undo :: WidgetUndoScope Copy item path

impl WidgetUndoScope

pub const fn new() -> Self

New, not inited in a widget.

pub fn is_inited(&self) -> bool

if the scope is already inited in a widget.

pub fn init(&mut self)

Init the scope in the WIDGET.

pub fn info(&mut self, info: &mut WidgetInfoBuilder)

Sets the WIDGET info.

pub fn deinit(&mut self)

Deinit the scope in the WIDGET.

This clears the undo/redo stack of the scope.

pub fn set_enabled(&mut self, enabled: bool)

Sets if the undo/redo is enabled in this scope.

Is true by default.

pub fn can_undo(&self) -> bool

Gets if the undo stack is not empty.

pub fn can_redo(&self) -> bool

Gets if the redo stack is not empty.

Trait Implementations§

impl Default for WidgetUndoScope

fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

impl !UnwindSafe for WidgetUndoScope

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

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