feat(read-only): add shared selectable read-only field helper

src/ui/mod.rs

@@ -10,6 +10,7 @@ pub mod modal;
 pub mod overlay;
 pub mod popup;
 pub mod properties;
+pub mod read_only;
 pub mod ribbon;
 pub mod side_toolbar;
 pub mod statusbar;

src/ui/read_only.rs

@@ -0,0 +1,38 @@
+use iced::widget::text_input::{self, Status};
+use iced::{Background, Border, Color, Element, Length, Theme};
+
+/// A read-only value field: a text input with no `on_input` handler.
+///
+/// In the pinned iced fork, an input without `on_input` is treated as
+/// disabled, so the caret is never drawn and typing does nothing — but mouse
+/// click/drag selection and Ctrl+C / Ctrl+A still work. This gives a field the
+/// user can select and copy but never edit or place a blinker in.
+#[allow(dead_code)] // consumed by the read-only field unification tasks
+pub fn field<'a, Message: Clone + 'a>(value: &'a str, size: f32, width: Length) -> Element<'a, Message> {
+    iced::widget::text_input("", value)
+        .size(size)
+        .style(read_only_style)
+        .padding([3, 6])
+        .width(width)
+        .into()
+}
+
+/// Muted "disabled input box" look: the same bordered box geometry as the
+/// editable fields but with a quieter background and text so it reads as
+/// read-only. The selection highlight is kept so copy stays discoverable.
+#[allow(dead_code)] // used only via `field`, which the later tasks wire up
+fn read_only_style(theme: &Theme, _status: Status) -> text_input::Style {
+    let palette = theme.palette();
+    text_input::Style {
+        background: Background::Color(palette.background.weakest.color),
+        border: Border {
+            color: palette.background.neutral.color,
+            width: 1.0,
+            radius: 2.0.into(),
+        },
+        icon: Color::TRANSPARENT,
+        placeholder: palette.background.base.text.scale_alpha(0.48),
+        value: palette.background.base.text.scale_alpha(0.72),
+        selection: palette.primary.base.color.scale_alpha(0.5),
+    }
+}