Struct WidgetUndoScope

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pub struct WidgetUndoScope(/* private fields */);

Expand description

Represents a widget undo scope.

See UNDO.with_scope for more details.

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impl WidgetUndoScope

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pub const fn new() -> Self

New, not inited in a widget.

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pub fn is_inited(&self) -> bool

if the scope is already inited in a widget.

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pub fn init(&mut self)

Init the scope in the WIDGET.

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

Sets the WIDGET info.

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pub fn deinit(&mut self)

Deinit the scope in the WIDGET.

This clears the undo/redo stack of the scope.

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

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

Is true by default.

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pub fn can_undo(&self) -> bool

Gets if the undo stack is not empty.

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pub fn can_redo(&self) -> bool

Gets if the redo stack is not empty.

Trait Implementations§

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impl Default for WidgetUndoScope

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fn default() -> Self

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

Auto Trait Implementations§

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impl !UnwindSafe for WidgetUndoScope

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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