zng_ext_input::focus

Struct FocusChangedArgs

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pub struct FocusChangedArgs {
    pub timestamp: DInstant,
    pub prev_focus: Option<InteractionPath>,
    pub new_focus: Option<InteractionPath>,
    pub highlight: bool,
    pub cause: FocusChangedCause,
    pub enabled_nav: FocusNavAction,
    /* private fields */
}
Expand description

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§timestamp: DInstant

Instant the event happened.

§prev_focus: Option<InteractionPath>

Previously focused widget.

§new_focus: Option<InteractionPath>

Newly focused widget.

§highlight: bool

If the focused widget should visually indicate that it is focused.

This is true when the focus change is caused by a key press, false when it is caused by a mouse click.

Some widgets, like text input, may ignore this field and always indicate that they are focused.

§cause: FocusChangedCause

What caused this event.

§enabled_nav: FocusNavAction

Focus navigation actions that can move the focus away from the new_focus.

Implementations§

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impl FocusChangedArgs

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pub fn new( timestamp: impl Into<DInstant>, propagation_handle: EventPropagationHandle, prev_focus: impl Into<Option<InteractionPath>>, new_focus: impl Into<Option<InteractionPath>>, highlight: impl Into<bool>, cause: impl Into<FocusChangedCause>, enabled_nav: impl Into<FocusNavAction>, ) -> Self

New args from values that convert into the argument types.

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pub fn now( prev_focus: impl Into<Option<InteractionPath>>, new_focus: impl Into<Option<InteractionPath>>, highlight: impl Into<bool>, cause: impl Into<FocusChangedCause>, enabled_nav: impl Into<FocusNavAction>, ) -> Self

Arguments for event that happened now (INSTANT.now).

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impl FocusChangedArgs

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pub fn is_widget_move(&self) -> bool

If the focus is still in the same widget, but the widget path changed.

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pub fn is_enabled_change(&self) -> bool

If the focus is still in the same widget path, but some or all interactivity has changed.

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pub fn is_highlight_changed(&self) -> bool

If the focus is still in the same widget but highlight changed.

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pub fn is_focus(&self, widget_id: WidgetId) -> bool

If widget_id is the new focus and was not before.

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pub fn is_blur(&self, widget_id: WidgetId) -> bool

If widget_id is the previous focus and is not now.

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pub fn is_focus_enter(&self, widget_id: WidgetId) -> bool

If widget_id is the new focus or a parent of the new focus and was not a parent of the previous focus.

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pub fn is_focus_leave(&self, widget_id: WidgetId) -> bool

If widget_id is the previous focus or a parent of the previous focus and is not a parent of the new focus.

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pub fn is_focused(&self, widget_id: WidgetId) -> bool

If the widget is the new focus.

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pub fn is_focus_within(&self, widget_id: WidgetId) -> bool

If the widget is in the new focus path.

Trait Implementations§

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impl AnyEventArgs for FocusChangedArgs

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fn delivery_list(&self, list: &mut UpdateDeliveryList)

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fn clone_any(&self) -> Box<dyn AnyEventArgs>

Clone the event into a type erased box.
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fn as_any(&self) -> &dyn Any

Access to dyn Any methods.
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fn timestamp(&self) -> DInstant

Gets the instant this event happened.
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fn propagation(&self) -> &EventPropagationHandle

Propagation handle associated with this event instance. Read more
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impl Clone for FocusChangedArgs

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fn clone(&self) -> FocusChangedArgs

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for FocusChangedArgs

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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 EventArgs for FocusChangedArgs

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fn handle<F, R>(&self, handler: F) -> Option<R>
where F: FnOnce(&Self) -> R,

Calls handler and stops propagation if propagation is still allowed. Read more

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