graphix-package-gui 0.9.0

use super::{compile, GuiW, GuiWidget, IcedElement};
use crate::types::{HAlignV, LengthV, PaddingV, VAlignV};
use anyhow::{Context, Result};
use arcstr::ArcStr;
use graphix_compiler::expr::ExprId;
use graphix_rt::{GXExt, GXHandle, Ref, TRef};
use iced_widget as widget;
use netidx::publisher::Value;
use tokio::try_join;

pub(crate) struct ContainerW<X: GXExt> {
    gx: GXHandle<X>,
    padding: TRef<X, PaddingV>,
    width: TRef<X, LengthV>,
    height: TRef<X, LengthV>,
    halign: TRef<X, HAlignV>,
    valign: TRef<X, VAlignV>,
    child_ref: Ref<X>,
    child: GuiW<X>,
}

impl<X: GXExt> ContainerW<X> {
    pub(crate) async fn compile(gx: GXHandle<X>, source: Value) -> Result<GuiW<X>> {
        let [(_, child), (_, halign), (_, height), (_, padding), (_, valign), (_, width)] =
            source.cast_to::<[(ArcStr, u64); 6]>().context("container flds")?;
        let (child_ref, halign, height, padding, valign, width) = try_join! {
            gx.compile_ref(child),
            gx.compile_ref(halign),
            gx.compile_ref(height),
            gx.compile_ref(padding),
            gx.compile_ref(valign),
            gx.compile_ref(width),
        }?;
        let compiled_child = compile_child!(gx, child_ref, "container child");
        Ok(Box::new(Self {
            gx: gx.clone(),
            padding: TRef::new(padding).context("container tref padding")?,
            width: TRef::new(width).context("container tref width")?,
            height: TRef::new(height).context("container tref height")?,
            halign: TRef::new(halign).context("container tref halign")?,
            valign: TRef::new(valign).context("container tref valign")?,
            child_ref,
            child: compiled_child,
        }))
    }
}

impl<X: GXExt> GuiWidget<X> for ContainerW<X> {
    fn children_mut(&mut self) -> &mut [GuiW<X>] {
        std::slice::from_mut(&mut self.child)
    }

    fn children(&self) -> &[GuiW<X>] {
        std::slice::from_ref(&self.child)
    }

    fn handle_update(
        &mut self,
        rt: &tokio::runtime::Handle,
        id: ExprId,
        v: &Value,
    ) -> Result<bool> {
        let mut changed = false;
        changed |=
            self.padding.update(id, v).context("container update padding")?.is_some();
        changed |= self.width.update(id, v).context("container update width")?.is_some();
        changed |=
            self.height.update(id, v).context("container update height")?.is_some();
        changed |=
            self.halign.update(id, v).context("container update halign")?.is_some();
        changed |=
            self.valign.update(id, v).context("container update valign")?.is_some();
        update_child!(
            self,
            rt,
            id,
            v,
            changed,
            child_ref,
            child,
            "container child recompile"
        );
        Ok(changed)
    }

    fn view(&self) -> IcedElement<'_> {
        let mut c = widget::Container::new(self.child.view());
        if let Some(p) = self.padding.t.as_ref() {
            c = c.padding(p.0);
        }
        if let Some(w) = self.width.t.as_ref() {
            c = c.width(w.0);
        }
        if let Some(h) = self.height.t.as_ref() {
            c = c.height(h.0);
        }
        if let Some(a) = self.halign.t.as_ref() {
            c = c.align_x(a.0);
        }
        if let Some(a) = self.valign.t.as_ref() {
            c = c.align_y(a.0);
        }
        c.into()
    }
}