Struct web_sys::ListBoxObject [−][src]
The ListBoxObject
class.
This API requires the following crate features to be activated: ListBoxObject
Implementations
impl ListBoxObject
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pub fn ensure_index_is_visible(&self, row_index: i32)
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The ensureIndexIsVisible()
method.
This API requires the following crate features to be activated: ListBoxObject
impl ListBoxObject
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pub fn get_index_of_first_visible_row(&self) -> i32
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The getIndexOfFirstVisibleRow()
method.
This API requires the following crate features to be activated: ListBoxObject
impl ListBoxObject
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pub fn get_index_of_item(&self, item: &Element) -> i32
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The getIndexOfItem()
method.
This API requires the following crate features to be activated: Element
, ListBoxObject
impl ListBoxObject
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pub fn get_item_at_index(&self, index: i32) -> Option<Element>
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The getItemAtIndex()
method.
This API requires the following crate features to be activated: Element
, ListBoxObject
impl ListBoxObject
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pub fn get_number_of_visible_rows(&self) -> i32
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The getNumberOfVisibleRows()
method.
This API requires the following crate features to be activated: ListBoxObject
impl ListBoxObject
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pub fn get_row_count(&self) -> i32
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The getRowCount()
method.
This API requires the following crate features to be activated: ListBoxObject
impl ListBoxObject
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pub fn get_row_height(&self) -> i32
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The getRowHeight()
method.
This API requires the following crate features to be activated: ListBoxObject
impl ListBoxObject
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pub fn scroll_by_lines(&self, num_lines: i32)
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The scrollByLines()
method.
This API requires the following crate features to be activated: ListBoxObject
impl ListBoxObject
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pub fn scroll_to_index(&self, row_index: i32)
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The scrollToIndex()
method.
This API requires the following crate features to be activated: ListBoxObject
Methods from Deref<Target = Object>
pub fn constructor(&self) -> Function
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The constructor property returns a reference to the Object
constructor
function that created the instance object.
pub fn has_own_property(&self, property: &JsValue) -> bool
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The hasOwnProperty()
method returns a boolean indicating whether the
object has the specified property as its own property (as opposed to
inheriting it).
pub fn is_prototype_of(&self, value: &JsValue) -> bool
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The isPrototypeOf()
method checks if an object exists in another
object’s prototype chain.
pub fn property_is_enumerable(&self, property: &JsValue) -> bool
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The propertyIsEnumerable()
method returns a Boolean indicating
whether the specified property is enumerable.
pub fn to_locale_string(&self) -> JsString
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The toLocaleString()
method returns a string representing the object.
This method is meant to be overridden by derived objects for
locale-specific purposes.
pub fn to_string(&self) -> JsString
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The toString()
method returns a string representing the object.
pub fn value_of(&self) -> Object
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The valueOf()
method returns the primitive value of the
specified object.
Methods from Deref<Target = JsValue>
pub const NULL: JsValue
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pub const UNDEFINED: JsValue
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pub const TRUE: JsValue
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pub const FALSE: JsValue
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pub fn as_f64(&self) -> Option<f64>
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Returns the f64
value of this JS value if it’s an instance of a
number.
If this JS value is not an instance of a number then this returns
None
.
pub fn is_string(&self) -> bool
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Tests whether this JS value is a JS string.
pub fn as_string(&self) -> Option<String>
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If this JS value is a string value, this function copies the JS string
value into wasm linear memory, encoded as UTF-8, and returns it as a
Rust String
.
To avoid the copying and re-encoding, consider the
JsString::try_from()
function from js-sys
instead.
If this JS value is not an instance of a string or if it’s not valid
utf-8 then this returns None
.
UTF-16 vs UTF-8
JavaScript strings in general are encoded as UTF-16, but Rust strings
are encoded as UTF-8. This can cause the Rust string to look a bit
different than the JS string sometimes. For more details see the
documentation about the str
type which contains a few
caveats about the encodings.
pub fn as_bool(&self) -> Option<bool>
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Returns the bool
value of this JS value if it’s an instance of a
boolean.
If this JS value is not an instance of a boolean then this returns
None
.
pub fn is_null(&self) -> bool
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Tests whether this JS value is null
pub fn is_undefined(&self) -> bool
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Tests whether this JS value is undefined
pub fn is_symbol(&self) -> bool
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Tests whether the type of this JS value is symbol
pub fn is_object(&self) -> bool
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Tests whether typeof self == "object" && self !== null
.
pub fn is_function(&self) -> bool
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Tests whether the type of this JS value is function
.
pub fn is_truthy(&self) -> bool
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Tests whether the value is “truthy”.
pub fn is_falsy(&self) -> bool
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Tests whether the value is “falsy”.
Trait Implementations
impl AsRef<JsValue> for ListBoxObject
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impl AsRef<ListBoxObject> for ListBoxObject
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fn as_ref(&self) -> &ListBoxObject
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impl AsRef<Object> for ListBoxObject
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impl Clone for ListBoxObject
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fn clone(&self) -> ListBoxObject
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pub fn clone_from(&mut self, source: &Self)
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impl Debug for ListBoxObject
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impl Deref for ListBoxObject
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impl Eq for ListBoxObject
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impl From<JsValue> for ListBoxObject
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fn from(obj: JsValue) -> ListBoxObject
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impl From<ListBoxObject> for JsValue
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fn from(obj: ListBoxObject) -> JsValue
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impl From<ListBoxObject> for Object
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fn from(obj: ListBoxObject) -> Object
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impl FromWasmAbi for ListBoxObject
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type Abi = <JsValue as FromWasmAbi>::Abi
The wasm ABI type that this converts from when coming back out from the ABI boundary. Read more
unsafe fn from_abi(js: Self::Abi) -> Self
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impl IntoWasmAbi for ListBoxObject
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type Abi = <JsValue as IntoWasmAbi>::Abi
The wasm ABI type that this converts into when crossing the ABI boundary. Read more
fn into_abi(self) -> Self::Abi
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impl<'a> IntoWasmAbi for &'a ListBoxObject
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type Abi = <&'a JsValue as IntoWasmAbi>::Abi
The wasm ABI type that this converts into when crossing the ABI boundary. Read more
fn into_abi(self) -> Self::Abi
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impl JsCast for ListBoxObject
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fn instanceof(val: &JsValue) -> bool
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fn is_type_of(val: &JsValue) -> bool
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fn unchecked_from_js(val: JsValue) -> Self
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fn unchecked_from_js_ref(val: &JsValue) -> &Self
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pub fn has_type<T>(&self) -> bool where
T: JsCast,
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T: JsCast,
pub fn dyn_into<T>(self) -> Result<T, Self> where
T: JsCast,
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T: JsCast,
pub fn dyn_ref<T>(&self) -> Option<&T> where
T: JsCast,
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T: JsCast,
pub fn unchecked_into<T>(self) -> T where
T: JsCast,
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T: JsCast,
pub fn unchecked_ref<T>(&self) -> &T where
T: JsCast,
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T: JsCast,
pub fn is_instance_of<T>(&self) -> bool where
T: JsCast,
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T: JsCast,
impl OptionFromWasmAbi for ListBoxObject
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impl OptionIntoWasmAbi for ListBoxObject
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impl<'a> OptionIntoWasmAbi for &'a ListBoxObject
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impl PartialEq<ListBoxObject> for ListBoxObject
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fn eq(&self, other: &ListBoxObject) -> bool
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fn ne(&self, other: &ListBoxObject) -> bool
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impl RefFromWasmAbi for ListBoxObject
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type Abi = <JsValue as RefFromWasmAbi>::Abi
The wasm ABI type references to Self
are recovered from.
type Anchor = ManuallyDrop<ListBoxObject>
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
unsafe fn ref_from_abi(js: Self::Abi) -> Self::Anchor
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impl StructuralEq for ListBoxObject
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impl StructuralPartialEq for ListBoxObject
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impl WasmDescribe for ListBoxObject
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Auto Trait Implementations
impl RefUnwindSafe for ListBoxObject
impl !Send for ListBoxObject
impl !Sync for ListBoxObject
impl Unpin for ListBoxObject
impl UnwindSafe for ListBoxObject
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ReturnWasmAbi for T where
T: IntoWasmAbi,
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T: IntoWasmAbi,
type Abi = <T as IntoWasmAbi>::Abi
Same as IntoWasmAbi::Abi
pub fn return_abi(self) -> <T as ReturnWasmAbi>::Abi
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,