Struct web_sys::ObserverCallback[−][src]

#[repr(transparent)]
pub struct ObserverCallback { /* fields omitted */ }

Expand description

The ObserverCallback dictionary.

This API requires the following crate features to be activated: ObserverCallback

Implementations

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impl ObserverCallback

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pub fn new() -> Self

Construct a new ObserverCallback.

This API requires the following crate features to be activated: ObserverCallback

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pub fn handle_event(&mut self, val: &Function) -> &mut Self

Change the handleEvent field of this object.

This API requires the following crate features to be activated: ObserverCallback

Trait Implementations

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impl AsRef<JsValue> for ObserverCallback

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fn as_ref(&self) -> &JsValue

Performs the conversion.

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impl AsRef<Object> for ObserverCallback

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fn as_ref(&self) -> &Object

Performs the conversion.

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impl AsRef<ObserverCallback> for ObserverCallback

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fn as_ref(&self) -> &ObserverCallback

Performs the conversion.

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impl Clone for ObserverCallback

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fn clone(&self) -> ObserverCallback

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for ObserverCallback

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

Formats the value using the given formatter. Read more

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impl Default for ObserverCallback

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fn default() -> Self

Returns the “default value” for a type. Read more

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impl Deref for ObserverCallback

type Target = Object

The resulting type after dereferencing.

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fn deref(&self) -> &Object

Dereferences the value.

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impl From<JsValue> for ObserverCallback

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fn from(obj: JsValue) -> ObserverCallback

Performs the conversion.

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impl From<ObserverCallback> for JsValue

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fn from(obj: ObserverCallback) -> JsValue

Performs the conversion.

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impl From<ObserverCallback> for Object

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fn from(obj: ObserverCallback) -> Object

Performs the conversion.

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impl FromWasmAbi for ObserverCallback

type Abi = <JsValue as FromWasmAbi>::Abi

The wasm ABI type that this converts from when coming back out from the ABI boundary. Read more

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unsafe fn from_abi(js: Self::Abi) -> Self

Recover a Self from Self::Abi. Read more

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impl IntoWasmAbi for ObserverCallback

type Abi = <JsValue as IntoWasmAbi>::Abi

The wasm ABI type that this converts into when crossing the ABI boundary. Read more

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fn into_abi(self) -> Self::Abi

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary. Read more

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impl<'a> IntoWasmAbi for &'a ObserverCallback

type Abi = <&'a JsValue as IntoWasmAbi>::Abi

The wasm ABI type that this converts into when crossing the ABI boundary. Read more

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fn into_abi(self) -> Self::Abi

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary. Read more

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impl JsCast for ObserverCallback

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fn instanceof(val: &JsValue) -> bool

Performs a dynamic instanceof check to see whether the JsValue provided is an instance of this type. Read more

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fn unchecked_from_js(val: JsValue) -> Self

Performs a zero-cost unchecked conversion from a JsValue into an instance of Self Read more

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fn unchecked_from_js_ref(val: &JsValue) -> &Self

Performs a zero-cost unchecked conversion from a &JsValue into an instance of &Self. Read more

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fn has_type<T>(&self) -> bool where
T: JsCast,

Test whether this JS value has a type T. Read more

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fn dyn_into<T>(self) -> Result<T, Self> where
T: JsCast,

Performs a dynamic cast (checked at runtime) of this value into the target type T. Read more

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fn dyn_ref<T>(&self) -> Option<&T> where
T: JsCast,

Performs a dynamic cast (checked at runtime) of this value into the target type T. Read more

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fn unchecked_into<T>(self) -> T where
T: JsCast,

Performs a zero-cost unchecked cast into the specified type. Read more

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fn unchecked_ref<T>(&self) -> &T where
T: JsCast,

Performs a zero-cost unchecked cast into a reference to the specified type. Read more

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fn is_instance_of<T>(&self) -> bool where
T: JsCast,

Test whether this JS value is an instance of the type T. Read more

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fn is_type_of(val: &JsValue) -> bool

Performs a dynamic check to see whether the JsValue provided is a value of this type. Read more

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impl OptionFromWasmAbi for ObserverCallback

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fn is_none(abi: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi. Read more

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impl OptionIntoWasmAbi for ObserverCallback

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fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option. Read more

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impl<'a> OptionIntoWasmAbi for &'a ObserverCallback

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fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option. Read more

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impl PartialEq<ObserverCallback> for ObserverCallback

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

This method tests for self and other values to be equal, and is used by ==. Read more

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

This method tests for !=.

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impl RefFromWasmAbi for ObserverCallback

type Abi = <JsValue as RefFromWasmAbi>::Abi

The wasm ABI type references to Self are recovered from.

type Anchor = ManuallyDrop<ObserverCallback>

The type that holds the reference to Self for the duration of the invocation of the function that has an &Self parameter. This is required to ensure that the lifetimes don’t persist beyond one function call, and so that they remain anonymous. Read more

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