Struct FocusChangingEventArgs 

pub struct FocusChangingEventArgs {
    pub old_focused_element: Option<Ref<InputElement>>,
    pub navigation_method: NavigationMethod,
    pub key_modifiers: KeyModifiers,
    /* private fields */
}

Provides data for focus changing: the GettingFocus and LosingFocus events, which can cancel or redirect a focus change.

Fields

old_focused_element: Option<Ref<InputElement>>

The element that had focus before the change.

navigation_method: NavigationMethod

Indicates how the change in focus occurred.

key_modifiers: KeyModifiers

Any key modifiers active at the time of focus.

Implementations

impl FocusChangingEventArgs

pub fn new<T: ?Sized>(routed_event: &RoutedEvent<T>) -> Self

Creates args for a routed event.

pub fn new_focused_element(&self) -> Option<Ref<InputElement>>

The element that focus will move to.

pub fn canceled(&self) -> bool

Whether the focus change is canceled.

pub fn try_cancel(&self) -> bool

Attempts to cancel the current focus change. Returns true if the focus change was cancelled; otherwise, false.

pub fn try_set_new_focused_element( &self, input_element: Option<&Ref<InputElement>>, ) -> bool

Attempts to redirect focus from the targeted element to the specified element. Returns true if the focus change was redirected; otherwise, false.

Methods from Deref<Target = RoutedEventArgs>

pub fn handled(&self) -> bool

Whether the routed event has already been handled.

Once handled, the event keeps travelling along its route but is only delivered to handlers registered for handled events too.

pub fn set_handled(&self, value: bool)

Marks the routed event as handled or unhandled.

pub fn routed_event(&self) -> Option<RoutedEvent>

The routed event associated with these args.

pub fn set_routed_event<T: ?Sized>(&self, value: Option<&RoutedEvent<T>>)

Sets the routed event associated with these args.

pub fn route(&self) -> RoutingStrategies

The routing strategy currently being applied to the event.

pub fn set_route(&self, value: RoutingStrategies)

Sets the routing strategy currently being applied to the event.

pub fn source(&self) -> Option<Ref<FerroObject>>

The object that raised the event.

pub fn set_source(&self, value: impl Into<Nullable<FerroObject>>)

Sets the object that raised the event.

pub fn is_source(&self, object: &FerroObject) -> bool

Whether object is the source of the event (C# e.Source == object).

Trait Implementations

impl Clone for FocusChangingEventArgs

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Deref for FocusChangingEventArgs

type Target = RoutedEventArgs

The resulting type after dereferencing.

fn deref(&self) -> &RoutedEventArgs

Dereferences the value.

impl IKeyModifiersEventArgs for FocusChangingEventArgs

fn key_modifiers(&self) -> KeyModifiers

The key modifiers associated with this event.

impl IRoutedEventArgs for FocusChangingEventArgs

fn as_routed_event_args(&self) -> &RoutedEventArgs

The base routed event args: the routing state of the event.

fn query_args(&self, type_id: TypeId) -> Option<&dyn Any>

Returns the args viewed as the args type identified by type_id, if the args are of that type or of a type derived from it.

fn is_args_type(type_id: TypeId) -> bool

Whether this args type is the args type identified by type_id or is derived from it.

fn share(&self) -> Rc<dyn IRoutedEventArgs>

A shared handle to these args: what untyped code (a handler wired up by markup) is given, since a borrow cannot be held in an untyped value. The handle refers to the live args: the state handlers change (handled, the source, a cancel flag, ..) is shared with them.

impl MarkupTyped for FocusChangingEventArgs

const MARKUP: &'static MarkupType

The markup metadata of the type.