Trait glib::value::ToValue

pub trait ToValue {
    // Required methods
    fn to_value(&self) -> Value;
    fn value_type(&self) -> Type;
}

Trait to convert a value to a Value.

Similar to other common conversion traits, the following invariants are guaranteed:

• Invertibility: x.to_value().get().unwrap() == x. In words, FromValue is the inverse of ToValue.
• Idempotence: x.to_value() == x.to_value().to_value(). In words, applying ToValue multiple times yields the same result as applying it once. Idempotence also applies the other way around: value.get::<Value>() is a no-op.

There is also the possibility to wrap values within values, see BoxedValue. All (un-)boxing needs to be done manually, and will be preserved under the conversion methods.

The conversion methods may cause values to be cloned, which may result in reference counter changes or heap allocations depending on the source and target type.

Required Methods

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifer of self.

This is the type of the value to be returned by to_value.

Implementations on Foreign Types

impl ToValue for str

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for i32

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for String

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for char

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for Vec<String>

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for u64

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for f64

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for u32

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl<'a> ToValue for &'a [&'a str]

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl<'a> ToValue for [&'a str]

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for &str

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for i64

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for i8

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for NonNull<Pointee>

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for u8

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for bool

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl<T: ToValue + StaticType> ToValue for &T

Blanket implementation for all references.

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for f32

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl ToValue for Vec<GString>

fn to_value(&self) -> Value

fn value_type(&self) -> Type

impl<T: ToValueOptional + StaticType> ToValue for Option<T>

Blanket implementation for all optional types.

fn to_value(&self) -> Value

fn value_type(&self) -> Type

Implementors

impl ToValue for &GStr

impl ToValue for Inhibit

impl ToValue for BindingFlags

impl ToValue for GStr

impl ToValue for GString

impl ToValue for IOCondition

impl ToValue for ILong

impl ToValue for ULong

impl ToValue for BoxedValue

impl ToValue for SendValue

impl ToValue for Value

impl ToValue for Pointer

impl<'a> ToValue for &'a SendValue

impl<'a> ToValue for &'a Value