zng_ext_input::focus

Struct FocusManager

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pub struct FocusManager { /* private fields */ }
Expand description

Application extension that manages keyboard focus.

§Events

Events this extension provides.

§Services

Services this extension provides.

§Dependencies

This extension requires the WINDOWS service.

This extension listens to the MOUSE_INPUT_EVENT, TOUCH_INPUT_EVENT, SHORTCUT_EVENT, WINDOW_FOCUS_CHANGED_EVENT and WIDGET_INFO_CHANGED_EVENT.

To work properly it should be added to the app after the windows manager extension.

§About Focus

See the module level documentation for an overview of the keyboard focus concepts implemented by this app extension.

Trait Implementations§

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impl AppExtension for FocusManager

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fn init(&mut self)

Initializes this extension.
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fn event_preview(&mut self, update: &mut EventUpdate)

Called just before event_ui when an event notifies. Read more
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fn render(&mut self, _: &mut RenderUpdates, _: &mut RenderUpdates)

Called when render is requested for windows and widgets. Read more
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fn event(&mut self, update: &mut EventUpdate)

Called after event_ui. Read more
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fn update(&mut self)

Called after every update_ui and info. Read more
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fn info(&mut self, _: &mut InfoUpdates)

Called when info rebuild is requested for windows and widgets. Read more
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fn register(&self, info: &mut AppExtensionsInfo)
where Self: Sized,

Register info abound this extension on the info list.
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fn enable_device_events(&self) -> bool

If the application should notify raw device events. Read more
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fn event_ui(&mut self, update: &mut EventUpdate)

Called just before event. Read more
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fn update_preview(&mut self)

Called just before update_ui. Read more
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fn update_ui(&mut self, update_widgets: &mut WidgetUpdates)

Called just before update. Read more
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fn layout(&mut self, layout_widgets: &mut LayoutUpdates)

Called when layout is requested for windows and widgets. Read more
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fn deinit(&mut self)

Called when the application is exiting. Read more
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fn boxed(self) -> Box<dyn AppExtensionBoxed>
where Self: Sized,

Gets the extension boxed. Read more
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impl Default for FocusManager

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fn default() -> FocusManager

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

Auto Trait 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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

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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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<T> StateValue for T
where T: Any + Send + Sync,