T09a overlays: popover, hover card, dialog with fullscreen, alert, confirm and prompt dialogs; shared severity; tooltip, sheet and drawer point to their homes

src/primitives/mod.rs

@@ -6,6 +6,7 @@ mod icon;
 mod image;
 mod measure;
 mod pressable;
+mod severity;
 mod tooltip;
 
 pub use backdrop::{Backdrop, Place};
@@ -17,4 +18,5 @@ pub use icon::{Icon, IconName};
 pub use image::Image;
 pub use measure::{IntersectionObserver, Measure};
 pub use pressable::Pressable;
+pub use severity::Severity;
 pub use tooltip::{Tooltip, TooltipTrigger};

src/primitives/severity.rs

@@ -0,0 +1,43 @@
+use gpui::Hsla;
+
+use super::IconName;
+use crate::theme::Palette;
+
+/// How much a message matters, with the color and icon that say so.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum Severity {
+    Info,
+    Success,
+    Warning,
+    Danger,
+}
+
+impl Severity {
+    pub fn color(self, colors: &Palette) -> Hsla {
+        match self {
+            Self::Info => colors.info,
+            Self::Success => colors.success,
+            Self::Warning => colors.warning,
+            Self::Danger => colors.danger,
+        }
+    }
+
+    /// The quiet fill behind its icon or a banner.
+    pub fn subtle(self, colors: &Palette) -> Hsla {
+        match self {
+            Self::Info => colors.info_subtle,
+            Self::Success => colors.success_subtle,
+            Self::Warning => colors.warning_subtle,
+            Self::Danger => colors.danger_subtle,
+        }
+    }
+
+    pub fn icon(self) -> IconName {
+        match self {
+            Self::Info => IconName::Info,
+            Self::Success => IconName::CircleCheck,
+            Self::Warning => IconName::TriangleAlert,
+            Self::Danger => IconName::CircleAlert,
+        }
+    }
+}