Draft widget nodes and wire interaction

web/src/widget/button.rs

@@ -1,14 +1,42 @@
-use crate::{Element, Widget};
+use crate::{Bus, Element, Widget};
+use dodrio::bumpalo;
 
 pub use iced::button::{Class, State};
 
 pub type Button<'a, Message> = iced::Button<'a, Message>;
 
-impl<'a, Message> Widget<Message> for Button<'a, Message> {}
+impl<'a, Message> Widget<Message> for Button<'a, Message>
+where
+    Message: 'static + Copy,
+{
+    fn node<'b>(
+        &self,
+        bump: &'b bumpalo::Bump,
+        bus: &Bus<Message>,
+    ) -> dodrio::Node<'b> {
+        use dodrio::builder::*;
+
+        let label = bumpalo::format!(in bump, "{}", self.label);
+
+        let mut node = button(bump).children(vec![text(label.into_bump_str())]);
+
+        if let Some(on_press) = self.on_press {
+            let event_bus = bus.clone();
+
+            node = node.on("click", move |root, vdom, _event| {
+                event_bus.publish(on_press, root);
+
+                vdom.schedule_render();
+            });
+        }
+
+        node.finish()
+    }
+}
 
 impl<'a, Message> From<Button<'a, Message>> for Element<'a, Message>
 where
-    Message: 'static,
+    Message: 'static + Copy,
 {
     fn from(button: Button<'a, Message>) -> Element<'a, Message> {
         Element::new(button)

web/src/widget/column.rs

@@ -1,4 +1,6 @@
-use crate::{Align, Element, Widget};
+use crate::{Align, Bus, Element, Widget};
+
+use dodrio::bumpalo;
 
 pub struct Column<'a, Message> {
     children: Vec<Element<'a, Message>>,
@@ -36,7 +38,23 @@ impl<'a, Message> Column<'a, Message> {
     }
 }
 
-impl<'a, Message> Widget<Message> for Column<'a, Message> {}
+impl<'a, Message> Widget<Message> for Column<'a, Message> {
+    fn node<'b>(
+        &self,
+        bump: &'b bumpalo::Bump,
+        publish: &Bus<Message>,
+    ) -> dodrio::Node<'b> {
+        use dodrio::builder::*;
+
+        let children: Vec<_> = self
+            .children
+            .iter()
+            .map(|element| element.widget.node(bump, publish))
+            .collect();
+
+        div(bump).children(children).finish()
+    }
+}
 
 impl<'a, Message> From<Column<'a, Message>> for Element<'a, Message>
 where

web/src/widget/row.rs

@@ -1,4 +1,6 @@
-use crate::{Element, Widget};
+use crate::{Bus, Element, Widget};
+
+use dodrio::bumpalo;
 
 pub struct Row<'a, Message> {
     children: Vec<Element<'a, Message>>,
@@ -24,7 +26,23 @@ impl<'a, Message> Row<'a, Message> {
     }
 }
 
-impl<'a, Message> Widget<Message> for Row<'a, Message> {}
+impl<'a, Message> Widget<Message> for Row<'a, Message> {
+    fn node<'b>(
+        &self,
+        bump: &'b bumpalo::Bump,
+        publish: &Bus<Message>,
+    ) -> dodrio::Node<'b> {
+        use dodrio::builder::*;
+
+        let children: Vec<_> = self
+            .children
+            .iter()
+            .map(|element| element.widget.node(bump, publish))
+            .collect();
+
+        div(bump).children(children).finish()
+    }
+}
 
 impl<'a, Message> From<Row<'a, Message>> for Element<'a, Message>
 where

web/src/widget/text.rs

@@ -1,10 +1,27 @@
-use crate::{Color, Element, Widget};
+use crate::{Bus, Color, Element, Widget};
+use dodrio::bumpalo;
 
 pub use iced::text::HorizontalAlignment;
 
 pub type Text = iced::Text<Color>;
 
-impl<'a, Message> Widget<Message> for Text {}
+impl<'a, Message> Widget<Message> for Text {
+    fn node<'b>(
+        &self,
+        bump: &'b bumpalo::Bump,
+        _publish: &Bus<Message>,
+    ) -> dodrio::Node<'b> {
+        use dodrio::builder::*;
+
+        let content = bumpalo::format!(in bump, "{}", self.content);
+        let size = bumpalo::format!(in bump, "font-size: {}px", self.size.unwrap_or(20));
+
+        p(bump)
+            .attr("style", size.into_bump_str())
+            .children(vec![text(content.into_bump_str())])
+            .finish()
+    }
+}
 
 impl<'a, Message> From<Text> for Element<'a, Message> {
     fn from(text: Text) -> Element<'a, Message> {