Enum zng::focus::FocusScopeOnFocus

pub enum FocusScopeOnFocus {
    Widget,
    FirstDescendant,
    LastFocused,
    FirstDescendantIgnoreBounds,
    LastFocusedIgnoreBounds,
}

Behavior of a focus scope when it receives direct focus.

Variants

Widget

Just focus the scope widget.

FirstDescendant

Focus the first descendant considering the TAB index, if the scope has no descendants behaves like Widget.

Focus the last descendant if the focus is reversing in, e.g. in a SHIFT+TAB action.

Behaves like Widget if the first(or last) descendant inner-bounds is not fully contained by the scope inner-bounds.

LastFocused

Focus the descendant that was last focused before focus moved out of the scope. If the scope cannot return focus, behaves like FirstDescendant.

If the scope is the only child of a parent that is TabNav::Cycle and the focus just exited and returned in a cycle action, behaves like FirstDescendant.

Behaves like Widget if the first(or last) descendant inner-bounds is not fully contained by the scope inner-bounds.

FirstDescendantIgnoreBounds

Like FirstDescendant, but also focus the descendant even if it’s inner-bounds is not fully contained by the scope inner-bounds.

The expectation is that the descendant is already visible or will be made visible when it receives focus, a scroll scope will scroll to make the descendant visible for example.

LastFocusedIgnoreBounds

Like LastFocused, but also focus the descendant even if it’s inner-bounds is not fully contained by the scope inner-bounds.

The expectation is that the descendant is already visible or will be made visible when it receives focus, a scroll scope will scroll to make the descendant visible for example.

Trait Implementations

impl Clone for FocusScopeOnFocus

fn clone(&self) -> FocusScopeOnFocus

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FocusScopeOnFocus

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

Formats the value using the given formatter.

impl Default for FocusScopeOnFocus

fn default() -> FocusScopeOnFocus

FirstDescendant

impl<'de> Deserialize<'de> for FocusScopeOnFocus

fn deserialize<__D>( __deserializer: __D, ) -> Result<FocusScopeOnFocus, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for FocusScopeOnFocus

fn eq(&self, other: &FocusScopeOnFocus) -> 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 Serialize for FocusScopeOnFocus

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for FocusScopeOnFocus

impl Eq for FocusScopeOnFocus

impl StructuralPartialEq for FocusScopeOnFocus