Struct glib::value::BoxedValue

pub struct BoxedValue(pub Value);

A Value containing another Value.

Tuple Fields

0: Value

Methods from Deref<Target = Value>

pub fn as_ptr(&self) -> *mut GValue

pub fn get<'a, T>( &'a self ) -> Result<T, <<T as FromValue<'_>>::Checker as ValueTypeChecker>::Error>where T: FromValue<'a>,

Tries to get a value of type T.

Returns Ok if the type is correct.

pub fn get_owned<T>( &self ) -> Result<T, <<T as FromValue<'_>>::Checker as ValueTypeChecker>::Error>where T: for<'b> FromValue<'b> + 'static,

Tries to get a value of an owned type T.

pub fn is<T: StaticType>(&self) -> bool

Returns true if the type of the value corresponds to T or is a sub-type of T.

pub fn is_type(&self, type_: Type) -> bool

Returns true if the type of the value corresponds to type_ or is a sub-type of type_.

pub fn type_(&self) -> Type

Returns the type of the value.

pub fn transform<T: ValueType>(&self) -> Result<Value, BoolError>

Tries to transform the value into a value of the target type Tries to cast the contents of self into a type appropriate to store in dest_value, e.g. to transform a G_TYPE_INT value into a G_TYPE_FLOAT value. Performing transformations between value types might incur precision lossage. Especially transformations into strings might reveal seemingly arbitrary results and shouldn’t be relied upon for production code (such as rcfile value or object property serialization).

dest_value

Target value.

Returns

Whether a transformation rule was found and could be applied. Upon failing transformations, dest_value is left untouched.

pub fn transform_with_type(&self, type_: Type) -> Result<Value, BoolError>

Tries to transform the value into a value of the target type

Trait Implementations

impl Deref for BoxedValue

type Target = Value

The resulting type after dereferencing.

fn deref(&self) -> &Value

Dereferences the value.

impl<'a> FromValue<'a> for BoxedValue

type Checker = GenericValueTypeOrNoneChecker<BoxedValue>

Value type checker.

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

impl StaticType for BoxedValue

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for BoxedValue

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifer of self.

impl ToValueOptional for BoxedValue

fn to_value_optional(s: Option<&Self>) -> Value

Convert an Option to a Value.

impl ValueType for BoxedValue

type Type = BoxedValue

Type to get the Type from.

impl ValueTypeOptional for BoxedValue