Trait rat_widget::event::HandleEvent

pub trait HandleEvent<Event, Qualifier, R>
where
    R: ConsumedEvent,
{
    // Required method
    fn handle(&mut self, event: &Event, qualifier: Qualifier) -> R;
}

A very broad trait for an event handler for widgets.

As widget types are only short-lived, this trait should be implemented for the state type. Thereby it can modify any state, and it can return an arbitrary result, that fits the widget.

Required Methods

fn handle(&mut self, event: &Event, qualifier: Qualifier) -> R

Handle an event.

• self - Should be the widget state.

• event - Event

• qualifier - Allows specifying/restricting the behaviour of the event-handler.

  This library defines two possible types:

  • FocusKeys - The event-handler does all the interactions for a focused widget. This calls the event-handler for MouseOnly too.
  • MouseOnly - Interactions for a non-focused widget. Mostly only reacting to mouse-events. But might check for hotkeys or the like.

Further ideas:

• ReadOnly
• Additional special behaviour like DoubleClick, HotKeyAlt, HotKeyCtrl.
• Opt-in behaviour like different key-bindings.
• Configurable key-map.
• Other context or configuration parameters.

Implementors

impl HandleEvent<Event, ConvenientKeys, TextOutcome> for DateInputState

impl HandleEvent<Event, Dialog, Outcome> for MsgDialogState

impl HandleEvent<Event, FocusKeys, ButtonOutcome> for ButtonState

impl HandleEvent<Event, FocusKeys, MenuOutcome> for MenuBarState

impl HandleEvent<Event, FocusKeys, MenuOutcome> for MenuLineState

impl HandleEvent<Event, FocusKeys, Outcome> for RListState<NoSelection>

impl HandleEvent<Event, FocusKeys, Outcome> for RListState<RowSelection>

impl HandleEvent<Event, FocusKeys, Outcome> for RListState<RowSetSelection>

impl HandleEvent<Event, FocusKeys, Outcome> for FTableState<CellSelection>

impl HandleEvent<Event, FocusKeys, Outcome> for FTableState<NoSelection>

impl HandleEvent<Event, FocusKeys, Outcome> for FTableState<RowSelection>

impl HandleEvent<Event, FocusKeys, Outcome> for FTableState<RowSetSelection>

impl HandleEvent<Event, FocusKeys, TextOutcome> for DateInputState

impl HandleEvent<Event, FocusKeys, TextOutcome> for TextInputState

impl HandleEvent<Event, FocusKeys, TextOutcome> for MaskedInputState

impl HandleEvent<Event, FocusKeys, TextOutcome> for NumberInputState

impl HandleEvent<Event, FocusKeys, TextOutcome> for TextAreaState

impl HandleEvent<Event, MouseOnly, ButtonOutcome> for ButtonState

impl HandleEvent<Event, MouseOnly, MenuOutcome> for MenuBarState

impl HandleEvent<Event, MouseOnly, MenuOutcome> for MenuLineState

impl HandleEvent<Event, MouseOnly, MenuOutcome> for PopupMenuState

impl HandleEvent<Event, MouseOnly, Outcome> for RListState<NoSelection>

impl HandleEvent<Event, MouseOnly, Outcome> for RListState<RowSelection>

impl HandleEvent<Event, MouseOnly, Outcome> for RListState<RowSetSelection>

impl HandleEvent<Event, MouseOnly, Outcome> for ViewState

impl HandleEvent<Event, MouseOnly, Outcome> for FTableState<CellSelection>

impl HandleEvent<Event, MouseOnly, Outcome> for FTableState<NoSelection>

impl HandleEvent<Event, MouseOnly, Outcome> for FTableState<RowSelection>

impl HandleEvent<Event, MouseOnly, Outcome> for FTableState<RowSetSelection>

impl HandleEvent<Event, MouseOnly, ScrollOutcome> for ScrollState

impl HandleEvent<Event, MouseOnly, TextOutcome> for DateInputState

impl HandleEvent<Event, MouseOnly, TextOutcome> for TextInputState

impl HandleEvent<Event, MouseOnly, TextOutcome> for MaskedInputState

impl HandleEvent<Event, MouseOnly, TextOutcome> for NumberInputState

impl HandleEvent<Event, MouseOnly, TextOutcome> for TextAreaState

impl HandleEvent<Event, Popup, MenuOutcome> for MenuBarState

impl HandleEvent<Event, Popup, MenuOutcome> for PopupMenuState

impl HandleEvent<Event, ReadOnly, TextOutcome> for DateInputState

impl HandleEvent<Event, ReadOnly, TextOutcome> for TextInputState

impl HandleEvent<Event, ReadOnly, TextOutcome> for MaskedInputState

impl HandleEvent<Event, ReadOnly, TextOutcome> for NumberInputState

impl HandleEvent<Event, ReadOnly, TextOutcome> for TextAreaState

impl<'a> HandleEvent<Event, FocusKeys, Outcome> for Focus<'a>

impl<'a> HandleEvent<Event, MouseOnly, Outcome> for Focus<'a>

impl<'a> HandleEvent<Event, MouseOnly, ScrollOutcome> for ScrollArea<'a>

Handle scrolling for the whole area spanned by the two scroll-states.

impl<EState, EQualifier> HandleEvent<Event, EQualifier, EditOutcome> for EditFTableState<EState>

where EState: HandleEvent<Event, EQualifier, EditOutcome>,

impl<R, Q, S> HandleEvent<Event, Q, R> for ViewportState<S>

where S: HandleEvent<Event, Q, R>, R: From<Outcome> + ConsumedEvent + Debug,

impl<Selection> HandleEvent<Event, DoubleClick, DoubleClickOutcome> for FTableState<Selection>

impl<Selection> HandleEvent<Event, EditKeys, EditOutcome> for FTableState<Selection>

where Selection: TableSelection, FTableState<Selection>: HandleEvent<Event, FocusKeys, Outcome>,