Struct DragEvent 

pub struct DragEvent { /* private fields */ }

The DragEvent class.

MDN Documentation

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

Implementations

impl DragEvent

pub fn data_transfer(&self) -> Option<DataTransfer>

impl DragEvent

pub fn new(type_: &str) -> Result<DragEvent, JsValue>

impl DragEvent

pub fn init_drag_event(&self, type_: &str)

impl DragEvent

pub fn init_drag_event_with_can_bubble(&self, type_: &str, can_bubble: bool)

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable( &self, type_: &str, can_bubble: bool, cancelable: bool, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y_and_a_client_x( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, a_client_x: i32, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y_and_a_client_x_and_a_client_y( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, a_client_x: i32, a_client_y: i32, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y_and_a_client_x_and_a_client_y_and_a_ctrl_key( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, a_client_x: i32, a_client_y: i32, a_ctrl_key: bool, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y_and_a_client_x_and_a_client_y_and_a_ctrl_key_and_a_alt_key( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, a_client_x: i32, a_client_y: i32, a_ctrl_key: bool, a_alt_key: bool, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y_and_a_client_x_and_a_client_y_and_a_ctrl_key_and_a_alt_key_and_a_shift_key( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, a_client_x: i32, a_client_y: i32, a_ctrl_key: bool, a_alt_key: bool, a_shift_key: bool, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y_and_a_client_x_and_a_client_y_and_a_ctrl_key_and_a_alt_key_and_a_shift_key_and_a_meta_key( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, a_client_x: i32, a_client_y: i32, a_ctrl_key: bool, a_alt_key: bool, a_shift_key: bool, a_meta_key: bool, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y_and_a_client_x_and_a_client_y_and_a_ctrl_key_and_a_alt_key_and_a_shift_key_and_a_meta_key_and_a_button( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, a_client_x: i32, a_client_y: i32, a_ctrl_key: bool, a_alt_key: bool, a_shift_key: bool, a_meta_key: bool, a_button: u16, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y_and_a_client_x_and_a_client_y_and_a_ctrl_key_and_a_alt_key_and_a_shift_key_and_a_meta_key_and_a_button_and_a_related_target( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, a_client_x: i32, a_client_y: i32, a_ctrl_key: bool, a_alt_key: bool, a_shift_key: bool, a_meta_key: bool, a_button: u16, a_related_target: Option<&EventTarget>, )

impl DragEvent

pub fn init_drag_event_with_can_bubble_and_cancelable_and_a_view_and_a_detail_and_a_screen_x_and_a_screen_y_and_a_client_x_and_a_client_y_and_a_ctrl_key_and_a_alt_key_and_a_shift_key_and_a_meta_key_and_a_button_and_a_related_target_and_a_data_transfer( &self, type_: &str, can_bubble: bool, cancelable: bool, a_view: Option<&Window>, a_detail: i32, a_screen_x: i32, a_screen_y: i32, a_client_x: i32, a_client_y: i32, a_ctrl_key: bool, a_alt_key: bool, a_shift_key: bool, a_meta_key: bool, a_button: u16, a_related_target: Option<&EventTarget>, a_data_transfer: Option<&DataTransfer>, )

Methods from Deref<Target = MouseEvent>

pub fn x(&self) -> i32

pub fn y(&self) -> i32

pub fn ctrl_key(&self) -> bool

pub fn shift_key(&self) -> bool

pub fn alt_key(&self) -> bool

pub fn meta_key(&self) -> bool

pub fn button(&self) -> i16

pub fn buttons(&self) -> u16

pub fn related_target(&self) -> Option<EventTarget>

pub fn region(&self) -> Option<String>

pub fn movement_x(&self) -> i32

pub fn movement_y(&self) -> i32

pub fn screen_x(&self) -> f64

pub fn screen_y(&self) -> f64

pub fn client_x(&self) -> f64

pub fn client_y(&self) -> f64

pub fn offset_x(&self) -> f64

pub fn offset_y(&self) -> f64

pub fn page_x(&self) -> f64

pub fn page_y(&self) -> f64

pub fn get_modifier_state(&self, key_arg: &str) -> bool

pub fn init_mouse_event(&self, type_arg: &str)

pub fn init_mouse_event_with_can_bubble_arg( &self, type_arg: &str, can_bubble_arg: bool, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg_and_screen_y_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, screen_y_arg: i32, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg_and_screen_y_arg_and_client_x_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, screen_y_arg: i32, client_x_arg: i32, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg_and_screen_y_arg_and_client_x_arg_and_client_y_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, screen_y_arg: i32, client_x_arg: i32, client_y_arg: i32, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg_and_screen_y_arg_and_client_x_arg_and_client_y_arg_and_ctrl_key_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, screen_y_arg: i32, client_x_arg: i32, client_y_arg: i32, ctrl_key_arg: bool, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg_and_screen_y_arg_and_client_x_arg_and_client_y_arg_and_ctrl_key_arg_and_alt_key_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, screen_y_arg: i32, client_x_arg: i32, client_y_arg: i32, ctrl_key_arg: bool, alt_key_arg: bool, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg_and_screen_y_arg_and_client_x_arg_and_client_y_arg_and_ctrl_key_arg_and_alt_key_arg_and_shift_key_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, screen_y_arg: i32, client_x_arg: i32, client_y_arg: i32, ctrl_key_arg: bool, alt_key_arg: bool, shift_key_arg: bool, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg_and_screen_y_arg_and_client_x_arg_and_client_y_arg_and_ctrl_key_arg_and_alt_key_arg_and_shift_key_arg_and_meta_key_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, screen_y_arg: i32, client_x_arg: i32, client_y_arg: i32, ctrl_key_arg: bool, alt_key_arg: bool, shift_key_arg: bool, meta_key_arg: bool, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg_and_screen_y_arg_and_client_x_arg_and_client_y_arg_and_ctrl_key_arg_and_alt_key_arg_and_shift_key_arg_and_meta_key_arg_and_button_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, screen_y_arg: i32, client_x_arg: i32, client_y_arg: i32, ctrl_key_arg: bool, alt_key_arg: bool, shift_key_arg: bool, meta_key_arg: bool, button_arg: i16, )

pub fn init_mouse_event_with_can_bubble_arg_and_cancelable_arg_and_view_arg_and_detail_arg_and_screen_x_arg_and_screen_y_arg_and_client_x_arg_and_client_y_arg_and_ctrl_key_arg_and_alt_key_arg_and_shift_key_arg_and_meta_key_arg_and_button_arg_and_related_target_arg( &self, type_arg: &str, can_bubble_arg: bool, cancelable_arg: bool, view_arg: Option<&Window>, detail_arg: i32, screen_x_arg: i32, screen_y_arg: i32, client_x_arg: i32, client_y_arg: i32, ctrl_key_arg: bool, alt_key_arg: bool, shift_key_arg: bool, meta_key_arg: bool, button_arg: i16, related_target_arg: Option<&EventTarget>, )

Methods from Deref<Target = UiEvent>

pub fn view(&self) -> Option<Window>

pub fn detail(&self) -> i32

pub fn layer_x(&self) -> i32

pub fn layer_y(&self) -> i32

pub fn page_x(&self) -> i32

pub fn page_y(&self) -> i32

pub fn which(&self) -> u32

pub fn range_parent(&self) -> Option<Node>

pub fn range_offset(&self) -> i32

pub fn init_ui_event(&self, a_type: &str)

pub fn init_ui_event_with_a_can_bubble(&self, a_type: &str, a_can_bubble: bool)

pub fn init_ui_event_with_a_can_bubble_and_a_cancelable( &self, a_type: &str, a_can_bubble: bool, a_cancelable: bool, )

pub fn init_ui_event_with_a_can_bubble_and_a_cancelable_and_a_view( &self, a_type: &str, a_can_bubble: bool, a_cancelable: bool, a_view: Option<&Window>, )

pub fn init_ui_event_with_a_can_bubble_and_a_cancelable_and_a_view_and_a_detail( &self, a_type: &str, a_can_bubble: bool, a_cancelable: bool, a_view: Option<&Window>, a_detail: i32, )

pub const SCROLL_PAGE_UP: i32

pub const SCROLL_PAGE_DOWN: i32

Methods from Deref<Target = Event>

pub fn type_(&self) -> String

pub fn target(&self) -> Option<EventTarget>

pub fn current_target(&self) -> Option<EventTarget>

pub fn event_phase(&self) -> u16

pub fn bubbles(&self) -> bool

pub fn cancelable(&self) -> bool

pub fn default_prevented(&self) -> bool

pub fn composed(&self) -> bool

pub fn is_trusted(&self) -> bool

pub fn time_stamp(&self) -> f64

pub fn cancel_bubble(&self) -> bool

pub fn set_cancel_bubble(&self, value: bool)

pub fn composed_path(&self) -> Array

pub fn init_event(&self, type_: &str)

pub fn init_event_with_bubbles(&self, type_: &str, bubbles: bool)

pub fn init_event_with_bubbles_and_cancelable( &self, type_: &str, bubbles: bool, cancelable: bool, )

pub fn prevent_default(&self)

pub fn stop_immediate_propagation(&self)

pub fn stop_propagation(&self)

pub const NONE: u16

pub const CAPTURING_PHASE: u16

pub const AT_TARGET: u16

pub const BUBBLING_PHASE: u16

Methods from Deref<Target = Object>

pub fn constructor(&self) -> Function

pub fn has_own_property(&self, property: &JsValue) -> bool

👎Deprecated:

Use Object::hasOwn instead.

pub fn is_prototype_of(&self, value: &JsValue) -> bool

pub fn property_is_enumerable(&self, property: &JsValue) -> bool

pub fn to_locale_string(&self) -> JsString

pub fn to_string(&self) -> JsString

pub fn to_js_string(&self) -> JsString

pub fn value_of(&self) -> Object

Methods from Deref<Target = JsValue>

pub const NULL: JsValue

pub const UNDEFINED: JsValue

pub const TRUE: JsValue

pub const FALSE: JsValue

pub fn unchecked_into_f64(&self) -> f64

Returns the value as f64 without type checking. Used by serde-wasm-bindgen for numeric conversions.

pub fn has_type<T>(&self) -> bool

where T: JsCast,

Check if this value is an instance of a specific JS type.

pub fn checked_div(&self, rhs: &JsValue) -> JsValue

Checked division.

pub fn pow(&self, rhs: &JsValue) -> JsValue

Power operation.

pub fn bit_and(&self, rhs: &JsValue) -> JsValue

Bitwise AND.

pub fn bit_or(&self, rhs: &JsValue) -> JsValue

Bitwise OR.

pub fn bit_xor(&self, rhs: &JsValue) -> JsValue

Bitwise XOR.

pub fn bit_not(&self) -> JsValue

Bitwise NOT.

pub fn shl(&self, rhs: &JsValue) -> JsValue

Left shift.

pub fn shr(&self, rhs: &JsValue) -> JsValue

Signed right shift.

pub fn unsigned_shr(&self, rhs: &JsValue) -> u32

Unsigned right shift.

pub fn add(&self, rhs: &JsValue) -> JsValue

Add.

pub fn sub(&self, rhs: &JsValue) -> JsValue

Subtract.

pub fn mul(&self, rhs: &JsValue) -> JsValue

Multiply.

pub fn div(&self, rhs: &JsValue) -> JsValue

Divide.

pub fn rem(&self, rhs: &JsValue) -> JsValue

Remainder.

pub fn neg(&self) -> JsValue

Negate.

pub fn lt(&self, other: &JsValue) -> bool

Less than comparison.

pub fn le(&self, other: &JsValue) -> bool

Less than or equal comparison.

pub fn gt(&self, other: &JsValue) -> bool

Greater than comparison.

pub fn ge(&self, other: &JsValue) -> bool

Greater than or equal comparison.

pub fn loose_eq(&self, other: &JsValue) -> bool

Loose equality (==).

pub fn is_falsy(&self) -> bool

Check if this value is a falsy value in JavaScript.

pub fn is_truthy(&self) -> bool

Check if this value is a truthy value in JavaScript.

pub fn is_object(&self) -> bool

Check if this value is an object.

pub fn is_function(&self) -> bool

Check if this value is a function.

pub fn is_string(&self) -> bool

Check if this value is a string.

pub fn is_symbol(&self) -> bool

Check if this value is a symbol.

pub fn is_bigint(&self) -> bool

Check if this value is a bigint.

pub fn is_array(&self) -> bool

Check if this value is an Array.

pub fn is_undefined(&self) -> bool

Check if this value is undefined.

pub fn is_null(&self) -> bool

Check if this value is null.

pub fn is_null_or_undefined(&self) -> bool

Check if this value is null or undefined.

pub fn js_typeof(&self) -> JsValue

Get the typeof this value as a string.

pub fn js_in(&self, obj: &JsValue) -> bool

Check if this value has a property with the given name.

pub fn as_bool(&self) -> Option<bool>

Get the value as a bool.

pub fn as_f64(&self) -> Option<f64>

Get the value as an f64.

pub fn as_string(&self) -> Option<String>

Get the value as a string.

pub fn as_debug_string(&self) -> String

Get a debug string representation of the value.

Trait Implementations

impl AsRef<DragEvent> for DragEvent

fn as_ref(&self) -> &DragEvent

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<Event> for DragEvent

fn as_ref(&self) -> &Event

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<JsValue> for DragEvent

fn as_ref(&self) -> &JsValue

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<MouseEvent> for DragEvent

fn as_ref(&self) -> &MouseEvent

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<Object> for DragEvent

fn as_ref(&self) -> &Object

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<UiEvent> for DragEvent

fn as_ref(&self) -> &UiEvent

Converts this type into a shared reference of the (usually inferred) input type.

impl BatchableResult for DragEvent

fn try_placeholder(batch: &mut Runtime<'_>) -> Option<Self>

impl BinaryDecode for DragEvent

fn decode(decoder: &mut DecodedData<'_>) -> Result<Self, DecodeError>

impl BinaryEncode for DragEvent

fn encode(self, encoder: &mut EncodedData)

impl Clone for DragEvent

fn clone(&self) -> DragEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DragEvent

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

Formats the value using the given formatter.

impl Deref for DragEvent

type Target = MouseEvent

The resulting type after dereferencing.

fn deref(&self) -> &MouseEvent

Dereferences the value.

impl EncodeTypeDef for DragEvent

fn encode_type_def(type_def: &mut TypeDef)

impl Eq for DragEvent

impl ErasableGeneric for DragEvent

type Repr = JsValue

impl From<DragEvent> for JsValue

fn from(val: DragEvent) -> Self

Converts to this type from the input type.

impl From<DragEvent> for MouseEvent

fn from(val: DragEvent) -> MouseEvent

Converts to this type from the input type.

impl From<DragEvent> for UiEvent

fn from(val: DragEvent) -> UiEvent

Converts to this type from the input type.

impl From<DragEvent> for Event

fn from(val: DragEvent) -> Event

Converts to this type from the input type.

impl From<DragEvent> for Object

fn from(val: DragEvent) -> Object

Converts to this type from the input type.

impl From<JsValue> for DragEvent

fn from(val: JsValue) -> Self

Converts to this type from the input type.

impl IntoJsGeneric for DragEvent

where DragEvent: JsGeneric,

type JsCanon = DragEvent

fn to_js(self) -> Self::JsCanon

impl JsCast for DragEvent

fn instanceof(__val: &JsValue) -> bool

Check if a JsValue is an instance of this type.

fn unchecked_from_js(val: JsValue) -> Self

Unchecked cast from JsValue to this type.

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

Unchecked cast from a JsValue reference to a reference of this type.

fn is_type_of(val: &JsValue) -> bool

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

fn has_type<T>(&self) -> bool

where T: JsCast,

Test whether this JS value has a type T.

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

where T: JsCast,

Try to cast this value to type T.

fn dyn_ref<T>(&self) -> Option<&T>

where T: JsCast,

Try to get a reference to type T from this value.

fn is_instance_of<T>(&self) -> bool

where T: JsCast,

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

fn unchecked_into<T>(self) -> T

where T: JsCast,

Unchecked cast to another type.

fn unchecked_ref<T>(&self) -> &T

where T: JsCast,

Unchecked cast to a reference of another type.

impl JsRefEncode for DragEvent

fn js_ref(&self) -> JsRef

impl PartialEq for DragEvent

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Promising for DragEvent

type Resolution = DragEvent

impl StructuralPartialEq for DragEvent

impl UpcastFrom<DragEvent> for JsValue

impl UpcastFrom<DragEvent> for JsOption<JsValue>

impl UpcastFrom<DragEvent> for DragEvent

impl UpcastFrom<DragEvent> for JsOption<DragEvent>

impl UpcastFrom<DragEvent> for MouseEvent

impl UpcastFrom<DragEvent> for JsOption<MouseEvent>

impl UpcastFrom<DragEvent> for UiEvent

impl UpcastFrom<DragEvent> for JsOption<UiEvent>

impl UpcastFrom<DragEvent> for Event

impl UpcastFrom<DragEvent> for JsOption<Event>

impl UpcastFrom<DragEvent> for Object

impl UpcastFrom<DragEvent> for JsOption<Object>