Enum WeakSymbol 

pub enum WeakSymbol {
    Line(Weak<RefCell<LineSymbol>>),
    Area(Weak<RefCell<AreaSymbol>>),
    Point(Weak<RefCell<PointSymbol>>),
    Text(Weak<RefCell<TextSymbol>>),
    CombinedArea(Weak<RefCell<CombinedAreaSymbol>>),
    CombinedLine(Weak<RefCell<CombinedLineSymbol>>),
}

A non-owning reference to a symbol of any type.

Variants

Line(Weak<RefCell<LineSymbol>>)

A weak reference to a line symbol.

Area(Weak<RefCell<AreaSymbol>>)

A weak reference to an area symbol.

Point(Weak<RefCell<PointSymbol>>)

A weak reference to a point symbol.

Text(Weak<RefCell<TextSymbol>>)

A weak reference to a text symbol.

CombinedArea(Weak<RefCell<CombinedAreaSymbol>>)

A weak reference to a combined area symbol.

CombinedLine(Weak<RefCell<CombinedLineSymbol>>)

A weak reference to a combined line symbol.

Implementations

impl WeakSymbol

pub fn upgrade(&self) -> Option<Symbol>

Attempts to upgrade the WeakSymbol to a Symbol, delaying dropping of the inner value if successful. Returns None if the inner value has since been dropped.

Trait Implementations

impl Clone for WeakSymbol

fn clone(&self) -> WeakSymbol

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WeakSymbol

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Weak<RefCell<AreaSymbol>>> for WeakSymbol

fn from(value: Weak<RefCell<AreaSymbol>>) -> Self

Converts to this type from the input type.

impl From<Weak<RefCell<CombinedAreaSymbol>>> for WeakSymbol

fn from(value: Weak<RefCell<CombinedAreaSymbol>>) -> Self

Converts to this type from the input type.

impl From<Weak<RefCell<CombinedLineSymbol>>> for WeakSymbol

fn from(value: Weak<RefCell<CombinedLineSymbol>>) -> Self

Converts to this type from the input type.

impl From<Weak<RefCell<LineSymbol>>> for WeakSymbol

fn from(value: Weak<RefCell<LineSymbol>>) -> Self

Converts to this type from the input type.

impl From<Weak<RefCell<PointSymbol>>> for WeakSymbol

fn from(value: Weak<RefCell<PointSymbol>>) -> Self

Converts to this type from the input type.

impl From<Weak<RefCell<TextSymbol>>> for WeakSymbol

fn from(value: Weak<RefCell<TextSymbol>>) -> Self

Converts to this type from the input type.

impl From<WeakAreaPathSymbol> for WeakSymbol

fn from(value: WeakAreaPathSymbol) -> Self

Converts to this type from the input type.

impl From<WeakLinePathSymbol> for WeakSymbol

fn from(value: WeakLinePathSymbol) -> Self

Converts to this type from the input type.

impl From<WeakPathSymbol> for WeakSymbol

fn from(value: WeakPathSymbol) -> Self

Converts to this type from the input type.

impl PartialEq for WeakSymbol

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl TryFrom<WeakSymbol> for Weak<RefCell<AreaSymbol>>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: WeakSymbol) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<WeakSymbol> for Weak<RefCell<LineSymbol>>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: WeakSymbol) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<WeakSymbol> for Weak<RefCell<PointSymbol>>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: WeakSymbol) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<WeakSymbol> for Weak<RefCell<TextSymbol>>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: WeakSymbol) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<WeakSymbol> for Weak<RefCell<CombinedAreaSymbol>>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: WeakSymbol) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<WeakSymbol> for Weak<RefCell<CombinedLineSymbol>>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: WeakSymbol) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<WeakSymbol> for WeakLinePathSymbol

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: WeakSymbol) -> Result<Self, Error>

Performs the conversion.

impl TryFrom<WeakSymbol> for WeakAreaPathSymbol

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: WeakSymbol) -> Result<Self, Error>

Performs the conversion.

impl TryFrom<WeakSymbol> for WeakPathSymbol

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: WeakSymbol) -> Result<Self, Error>

Performs the conversion.