Add error popups to room UI

src/ui/euph/popup.rs

@@ -0,0 +1,40 @@
+use crossterm::style::{ContentStyle, Stylize};
+use toss::styled::Styled;
+
+use crate::ui::widgets::background::Background;
+use crate::ui::widgets::border::Border;
+use crate::ui::widgets::layer::Layer;
+use crate::ui::widgets::padding::Padding;
+use crate::ui::widgets::text::Text;
+use crate::ui::widgets::BoxedWidget;
+
+pub enum Popup {
+    ServerError { description: String, reason: String },
+}
+
+impl Popup {
+    fn server_error_widget(description: &str, reason: &str) -> BoxedWidget {
+        let border_style = ContentStyle::default().red().bold();
+        let text = Styled::new_plain(description)
+            .then_plain("\n\n")
+            .then_plain(reason);
+        Layer::new(vec![
+            Padding::new(Text::new(("Error", border_style)))
+                .horizontal(1)
+                .into(),
+            Border::new(Background::new(Text::new(text)))
+                .style(border_style)
+                .into(),
+        ])
+        .into()
+    }
+
+    pub fn widget(&self) -> BoxedWidget {
+        match self {
+            Self::ServerError {
+                description,
+                reason,
+            } => Self::server_error_widget(description, reason),
+        }
+    }
+}