Trait glib::value::FromValue

pub unsafe trait FromValue<'a>: Sized {
    type Checker: ValueTypeChecker;

    // Required method
    unsafe fn from_value(value: &'a Value) -> Self;
}

Trait to retrieve the contained value from a Value.

Usually this would not be used directly but from the get function on a Value

Required Associated Types

type Checker: ValueTypeChecker

Value type checker.

Required Methods

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

Get the contained value from a Value.

Safety

Self::Checker::check() must be called first and must not fail.

Implementations on Foreign Types

impl<'a> FromValue<'a> for String

type Checker = GenericValueTypeOrNoneChecker<String>

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

impl<'a> FromValue<'a> for bool

type Checker = GenericValueTypeChecker<bool>

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

impl<'a> FromValue<'a> for f64

type Checker = GenericValueTypeChecker<f64>

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

impl<'a, T, C, E> FromValue<'a> for Option<T>where T: FromValue<'a, Checker = C> + StaticType, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>, E: Error + Send + Sized + 'static,

Blanket implementation for all optional types.

type Checker = ValueTypeOrNoneChecker<T, C, E>

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

impl<'a> FromValue<'a> for NonNull<Pointee>

type Checker = GenericValueTypeOrNoneChecker<NonNull<c_void>>

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

impl<'a> FromValue<'a> for &'a str

type Checker = GenericValueTypeOrNoneChecker<&'a str>

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

impl<'a> FromValue<'a> for char

type Checker = CharTypeChecker

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

impl<'a> FromValue<'a> for f32

type Checker = GenericValueTypeChecker<f32>

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

impl<'a> FromValue<'a> for u64

type Checker = GenericValueTypeChecker<u64>

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

impl<'a> FromValue<'a> for Vec<String>

type Checker = GenericValueTypeChecker<Vec<String, Global>>

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

impl<'a> FromValue<'a> for i8

type Checker = GenericValueTypeChecker<i8>

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

impl<'a> FromValue<'a> for u8

type Checker = GenericValueTypeChecker<u8>

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

impl<'a, 'b> FromValue<'a> for Vec<&'b FlagsValue>

type Checker = FlagsTypeChecker

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

impl<'a> FromValue<'a> for i64

type Checker = GenericValueTypeChecker<i64>

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

impl<'a> FromValue<'a> for i32

type Checker = GenericValueTypeChecker<i32>

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

impl<'a> FromValue<'a> for u32

type Checker = GenericValueTypeChecker<u32>

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

impl<'a> FromValue<'a> for Vec<GString>

type Checker = GenericValueTypeChecker<Vec<GString, Global>>

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

Implementors

impl<'a> FromValue<'a> for &'a GStr

type Checker = GenericValueTypeOrNoneChecker<&'a GStr>

impl<'a> FromValue<'a> for &'a Value

type Checker = NopChecker

impl<'a> FromValue<'a> for BindingFlags

type Checker = GenericValueTypeChecker<BindingFlags>

impl<'a> FromValue<'a> for GString

type Checker = GenericValueTypeOrNoneChecker<GString>

impl<'a> FromValue<'a> for IOCondition

type Checker = GenericValueTypeChecker<IOCondition>

impl<'a> FromValue<'a> for ILong

type Checker = GenericValueTypeChecker<ILong>

impl<'a> FromValue<'a> for ULong

type Checker = GenericValueTypeChecker<ULong>

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

type Checker = GenericValueTypeOrNoneChecker<BoxedValue>

impl<'a> FromValue<'a> for Value

type Checker = NopChecker

impl<'a> FromValue<'a> for Pointer

type Checker = GenericValueTypeChecker<*mut c_void>

impl<'a, 'b> FromValue<'a> for &'b EnumValue

type Checker = EnumTypeChecker