dioxus_lib::prelude

Struct Event

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pub struct Event<T>
where T: 'static + ?Sized,
{ pub data: Rc<T>, /* private fields */ }
Expand description

A wrapper around some generic data that handles the event’s state

Prevent this event from continuing to bubble up the tree to parent elements.

§Example

rsx! {
    button {
        onclick: move |evt: Event<MouseData>| {
            evt.stop_propagation();
        }
    }
};

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§data: Rc<T>

The data associated with this event

Implementations§

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impl<T> Event<T>
where T: 'static + ?Sized,

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pub fn new(data: Rc<T>, propagates: bool) -> Event<T>

Create a new event from the inner data

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impl<T> Event<T>
where T: ?Sized,

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pub fn map<U, F>(&self, f: F) -> Event<U>
where U: 'static, F: FnOnce(&T) -> U,

Map the event data to a new type

§Example
rsx! {
   button {
      onclick: move |evt: MouseEvent| {
         let data = evt.map(|data| data.client_coordinates());
         println!("{:?}", data.data());
      }
   }
};
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pub fn cancel_bubble(&self)

👎Deprecated: use stop_propagation instead

Prevent this event from continuing to bubble up the tree to parent elements.

§Example
rsx! {
    button {
        onclick: move |evt: Event<MouseData>| {
            evt.cancel_bubble();
        }
    }
};
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pub fn propagates(&self) -> bool

Check if the event propagates up the tree to parent elements

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pub fn stop_propagation(&self)

Prevent this event from continuing to bubble up the tree to parent elements.

§Example
rsx! {
    button {
        onclick: move |evt: Event<MouseData>| {
            evt.stop_propagation();
        }
    }
};
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pub fn data(&self) -> Rc<T>

Get a reference to the inner data from this event

rsx! {
    button {
        onclick: move |evt: Event<MouseData>| {
            let data = evt.data();
            async move {
                println!("{:?}", data);
            }
        }
    }
};
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pub fn prevent_default(&self)

Prevent the default action of the event.

§Example
fn App() -> Element {
    rsx! {
        a {
            // You can prevent the default action of the event with `prevent_default`
            onclick: move |event| {
                event.prevent_default();
            },
            href: "https://dioxuslabs.com",
            "don't go to the link"
        }
    }
}

Note: This must be called synchronously when handling the event. Calling it after the event has been handled will have no effect.

This method is not available on the LiveView renderer because LiveView handles all events over a websocket which cannot block.

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pub fn default_action_enabled(&self) -> bool

Check if the default action of the event is enabled.

Trait Implementations§

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impl<T> Clone for Event<T>
where T: ?Sized,

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fn clone(&self) -> Event<T>

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<T> Debug for Event<T>
where T: Debug,

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

Formats the value using the given formatter. Read more
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impl<T> Deref for Event<T>

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type Target = Rc<T>

The resulting type after dereferencing.
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fn deref(&self) -> &<Event<T> as Deref>::Target

Dereferences the value.

Auto Trait Implementations§

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impl<T> Freeze for Event<T>
where T: ?Sized,

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impl<T> !RefUnwindSafe for Event<T>

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impl<T> !Send for Event<T>

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impl<T> !Sync for Event<T>

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impl<T> Unpin for Event<T>
where T: ?Sized,

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impl<T> !UnwindSafe for Event<T>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> InitializeFromFunction<T> for T

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fn initialize_from_function(f: fn() -> T) -> T

Create an instance of this type from an initialization function
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<Ret> SpawnIfAsync<(), Ret> for Ret

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fn spawn(self) -> Ret

Spawn the value into the dioxus runtime if it is an async block
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impl<T, O> SuperFrom<T> for O
where O: From<T>,

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fn super_from(input: T) -> O

Convert from a type to another type.
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impl<T, O, M> SuperInto<O, M> for T
where O: SuperFrom<T, M>,

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fn super_into(self) -> O

Convert from a type to another type.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more