}

/// A multi-producer, single-consumer message channel.

}

impl<A> Default for Channel<A> {

/// Initialize a `Store` with the `State` given and a `Frontend` with the `Widget` given,

/// and run their main loops concurrently. Connect them to the `Channel` and also to

/// an interrupt broadcast channel also initialized in this function.

where

    P: Clone + Debug + Send + Sync + 'static,

{

    let (terminator, mut interrupt_rx) = task::create_termination();

    tokio::try_join!(

        store.main_loop(state, terminator, channel.rx, interrupt_rx.resubscribe()),

where

    P: Clone + Debug + Send + Sync,

{

    /// Handle a user-defined application message and return an `Exit` object

    /// in case the received message requested the application to also quit.

    /// Handle recurring tick.

    fn tick(&self);

/// The `Store` updates the applications' state concurrently. It handles

/// messages coming from the frontend and updates the state accordingly.

where

    S: State<P> + Clone + Send + Sync,

    P: Clone + Debug + Send + Sync,

{

    state_tx: UnboundedSender<S>,

}

where

    S: State<P> + Clone + Send + Sync,

    P: Clone + Debug + Send + Sync,

    }

}

where

    P: Clone + Debug + Send + Sync + 'static,

{

    /// By calling `main_loop`, the store will wait for new messages coming

        self,

        mut state: S,

        mut terminator: Terminator<P>,

        mut interrupt_rx: broadcast::Receiver<Interrupted<P>>,

    ) -> anyhow::Result<Interrupted<P>> {

        // Send the initial state once

        let result = loop {

            tokio::select! {

                // and process them to do async operations

                        let interrupted = Interrupted::User { payload: exit.value };

                        let _ = terminator.terminate(interrupted.clone());

///

/// Once created and run with `main_loop`, the `Frontend` will wait for new messages

/// being sent on either the terminal event, the state or the interrupt message channel.

}

    /// Create a new `Frontend` storing the sending end of a message channel.

    }

    /// By calling `main_loop`, the `Frontend` will wait for new messages being sent

    ) -> anyhow::Result<Interrupted<P>>

    where

        S: State<P>,

        P: Clone + Send + Sync + Debug,

    {

        let mut ticker = tokio::time::interval(RENDERING_TICK_RATE);

                    root.update(&state);

                    root

                }

            }

        };

        result

    }

}

use ratatui::prelude::*;

use ratatui::widgets::Cell;

pub type UpdateCallback<S> = fn(&S) -> Box<dyn Any>;

pub type EventCallback = fn(&mut dyn Any);

/// A `WidgetBase` provides common functionality to a `Widget`. It's used to store

/// event and update callbacks as well sending messages to the UI's message channel.

    /// Message sender

    /// Custom update handler

    pub on_update: Option<UpdateCallback<S>>,

    /// Additional custom event handler

    pub on_event: Option<EventCallback>,

}

    /// Create a new `WidgetBase` with no callbacks set.

        Self {

            on_update: None,

            on_event: None,

        }

    }

    /// Send a message to the internal channel.

    }

}

/// This is the trait that you should implement to define a custom `Widget`.

pub trait Widget {

    type State;

    /// Should return a new view with props build from state (if type is known) and a

    /// message sender set.

    where

        Self: Sized;

    fn render(&self, frame: &mut Frame, props: RenderProps);

    /// Return a reference to this widgets' base.

    /// Return a mutable reference to this widgets' base.

    /// Send a message to the widgets' base channel.

    }

    /// Should set the optional custom event handler.

impl<'a: 'static> Properties for HeaderProps<'a> {}

impl<'a: 'static> BoxedAny for HeaderProps<'a> {}

    /// Internal props

    props: HeaderProps<'a>,

    /// Internal base

}

impl<'a, S, A> Header<'a, S, A> {

    }

}

    type State = S;

        Self {

            props: HeaderProps::default(),

        }

    }

        frame.render_widget(header, header_layout[0]);

    }

        &self.base

    }

        &mut self.base

    }

}

impl<'a: 'static> Properties for FooterProps<'a> {}

impl<'a: 'static> BoxedAny for FooterProps<'a> {}

    /// Internal props

    props: FooterProps<'a>,

    /// Internal base

}

    pub fn columns(mut self, columns: Vec<Column<'a>>) -> Self {

        self.props.columns = columns;

        self

    }

}

    type State = S;

        Self {

            props: FooterProps::default(),

        }

    }

        }

    }

        &self.base

    }

        &mut self.base

    }

}

impl Properties for ContainerProps {}

impl BoxedAny for ContainerProps {}

    /// Internal base

    /// Internal props

    props: ContainerProps,

    /// Container header

    /// Content widget

    /// Container footer

}

        self.header = Some(header);

        self

    }

        self.content = Some(content);

        self

    }

        self.footer = Some(footer);

        self

    }

}

    type State = S;

    where

        Self: Sized,

    {

        Self {

            props: ContainerProps::default(),

            header: None,

            content: None,

        }

    }

        &self.base

    }

        &mut self.base

    }

}

impl Properties for SectionGroupProps {}

impl BoxedAny for SectionGroupProps {}

    /// Internal base

    /// Internal table properties

    props: SectionGroupProps,

    /// All sections

    /// Internal selection and offset state

    state: SectionGroupState,

}

        self.sections.push(section);

        self

    }

    }

}

    type State = S;

        Self {

            props: SectionGroupProps::default(),

            sections: vec![],

            state: SectionGroupState { focus: Some(0) },

        }

    }

        &self.base

    }

        &mut self.base

    }

}

impl BoxedAny for TextFieldState {}

    /// Internal base

    /// Internal props

    props: TextFieldProps,

    /// Internal state

    state: TextFieldState,

}

    pub fn text(&self) -> Option<&String> {

        self.state.text.as_ref()

    }

    }

}

    type State = S;

        Self {

            props: TextFieldProps::default(),

            state: TextFieldState {

                text: None,

        }

    }

        &self.base

    }

        &mut self.base

    }

}

impl BoxedAny for TableState {}

where

    R: ToRow<W>,

{

    /// Internal base

    /// Internal table properties

    props: TableProps<'a, R, W>,

    /// Internal selection and offset state

    state: TableState,

}

where

    R: ToRow<W>,

{

    }

}

where

    R: ToRow<W> + Clone + 'static,

{

    type State = S;

        Self {

            props: TableProps::default(),

            state: TableState::default().with_selected(Some(0)),

        }

        }

    }

        &self.base

    }

        &mut self.base

    }

}

impl BoxedAny for ParagraphState {}

    /// Internal base

    /// Internal props

    props: ParagraphProps<'a>,

    /// Internal state

    state: ParagraphState,

}

    pub fn scroll(&self) -> (u16, u16) {

        (self.state.offset as u16, 0)

    }

    }

}

    type State = S;

    where

        Self: Sized,

    {

        Self {

            props: ParagraphProps::default(),

            state: ParagraphState {

                offset: 0,

        frame.render_widget(content, content_area);

    }

        &self.base

    }

        &mut self.base

    }

}

impl<Id> Properties for WindowProps<Id> {}

impl<Id> BoxedAny for WindowProps<Id> {}

    /// Internal base

    /// Internal properties

    props: WindowProps<Id>,

    /// All pages known

}

where

    Id: Clone + Hash + Eq + PartialEq,

{

        self.pages.insert(id, page);

        self

    }

}

where

{

    type State = S;

    where

        Self: Sized,

    {

        Self {

            props: WindowProps::default(),

            pages: HashMap::new(),

        }

        }

    }

        &self.base

    }

        &mut self.base

    }

}

impl Properties for ShortcutsProps {}

impl BoxedAny for ShortcutsProps {}

    /// Internal properties

    props: ShortcutsProps,

    /// Internal base

}

    pub fn divider(mut self, divider: char) -> Self {

        self.props.divider = divider;

        self

    }

}

    type State = S;

        Self {

            props: ShortcutsProps::default(),

        }

    }

        frame.render_widget(table, props.area);

    }

        &self.base

    }

        &mut self.base

    }

}