⚠️ VeridianOS Kernel Documentation - This is low-level kernel code. All functions are unsafe unless explicitly marked otherwise. no_std

KeyboardNavigator

Struct KeyboardNavigator 

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pub struct KeyboardNavigator {
    pub areas: Vec<NavigationArea>,
    pub current_area: usize,
}
Expand description

Keyboard-driven navigation controller.

Supports F6 for area cycling, Tab/Shift-Tab for intra-area focus, Arrow keys for directional movement, Enter for activation, Escape for cancel.

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§areas: Vec<NavigationArea>

Navigation areas.

§current_area: usize

Index of the currently active area.

Implementations§

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impl KeyboardNavigator

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pub fn new() -> Self

Create a new navigator.

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pub fn add_area(&mut self, area: NavigationArea)

Add a navigation area.

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pub fn cycle_area(&mut self) -> NavResult

Cycle to the next area (F6).

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pub fn focus_next(&mut self) -> NavResult

Move focus to the next node in the current area.

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pub fn focus_prev(&mut self) -> NavResult

Move focus to the previous node in the current area.

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pub fn handle_key(&mut self, key: NavKey) -> NavResult

Handle a navigation key event.

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pub fn current_focused_node(&self) -> Option<A11yNodeId>

Get the currently focused node ID.

Trait Implementations§

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impl Debug for KeyboardNavigator

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

Formats the value using the given formatter. Read more
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impl Default for KeyboardNavigator

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl Freeze for KeyboardNavigator

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impl RefUnwindSafe for KeyboardNavigator

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impl Send for KeyboardNavigator

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impl Sync for KeyboardNavigator

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impl Unpin for KeyboardNavigator

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impl UnwindSafe for KeyboardNavigator

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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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<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.