Trait druid::ValueType

pub trait ValueType<'a>: Sized {
    type Owned: Into<Value>;
    fn try_from_value(v: &'a Value) -> Result<Self, ValueTypeError>;
}

Values which can be stored in an environment.

Note that for "expensive" types this is the reference. For example, for strings, this trait is implemented on &'a str. The trait is parametrized on a lifetime so that it can be used for references in this way.

Associated Types

type Owned: Into<Value>

The corresponding owned type.

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Required methods

fn try_from_value(v: &'a Value) -> Result<Self, ValueTypeError>

Attempt to convert the generic Value into this type.

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Implementations on Foreign Types

impl<'a> ValueType<'a> for f64

type Owned = f64

fn try_from_value(value: &Value) -> Result<Self, ValueTypeError>

impl<'a> ValueType<'a> for bool

type Owned = bool

fn try_from_value(value: &Value) -> Result<Self, ValueTypeError>

impl<'a> ValueType<'a> for u64

type Owned = u64

fn try_from_value(value: &Value) -> Result<Self, ValueTypeError>

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

type Owned = String

fn try_from_value(value: &'a Value) -> Result<Self, ValueTypeError>

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Implementors

impl<'a> ValueType<'a> for Color

type Owned = Color

fn try_from_value(value: &Value) -> Result<Self, ValueTypeError>

impl<'a> ValueType<'a> for Point

type Owned = Point

fn try_from_value(value: &Value) -> Result<Self, ValueTypeError>

impl<'a> ValueType<'a> for Rect

type Owned = Rect

fn try_from_value(value: &Value) -> Result<Self, ValueTypeError>

impl<'a> ValueType<'a> for Size

type Owned = Size

fn try_from_value(value: &Value) -> Result<Self, ValueTypeError>

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