Enum TabIndex

pub enum TabIndex {
    Auto,
    OverrideInParent(usize),
    NoKeyboardFocus,
}

Variants

Auto

Automatic tab index, similar to simply setting focusable = "true" or tabindex = 0 (both have the effect of making the element focusable).

Sidenote: See https://www.w3.org/TR/html5/editing.html#sequential-focus-navigation-and-the-tabindex-attribute for interesting notes on tabindex and accessibility

OverrideInParent(usize)

Set the tab index in relation to its parent element. I.e. if you have a list of elements, the focusing order is restricted to the current parent.

Ex. a div might have:

div (Auto)
|- element1 (OverrideInParent 0) <- current focus
|- element2 (OverrideInParent 5)
|- element3 (OverrideInParent 2)
|- element4 (Global 5)

When pressing tab repeatedly, the focusing order will be “element3, element2, element4, div”, since OverrideInParent elements take precedence among global order.

NoKeyboardFocus

Elements can be focused in callbacks, but are not accessible via keyboard / tab navigation (-1)

Implementations

impl TabIndex

pub fn get_index(&self) -> isize

Returns the HTML-compatible number of the tabindex element

Trait Implementations

impl Clone for TabIndex

fn clone(&self) -> TabIndex

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TabIndex

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

Formats the value using the given formatter.

impl Default for TabIndex

fn default() -> Self

Returns the “default value” for a type.

impl Hash for TabIndex

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for TabIndex

fn cmp(&self, other: &TabIndex) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for TabIndex

fn eq(&self, other: &TabIndex) -> 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 PartialOrd for TabIndex

fn partial_cmp(&self, other: &TabIndex) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for TabIndex

impl Eq for TabIndex

impl StructuralPartialEq for TabIndex