fix(tui): truncate project picker paths (#39678)

packages/tui/src/component/dialog-project.tsx

@@ -8,6 +8,9 @@ import { abbreviateHome } from "../runtime"
 import { useTuiPaths } from "../context/runtime"
 import { useLocation } from "../context/location"
 import { useToast } from "../ui/toast"
+import { useTerminalDimensions } from "@opentui/solid"
+import { truncateFilePath } from "../ui/file-path"
+import { stringWidth } from "../util/string-width"
 
 export function DialogProject() {
   const dialog = useDialog()
@@ -16,6 +19,7 @@ export function DialogProject() {
   const paths = useTuiPaths()
   const location = useLocation()
   const toast = useToast()
+  const dimensions = useTerminalDimensions()
 
   data.project.invalidate()
   void data.project.sync().catch(toast.error)
@@ -36,12 +40,19 @@ export function DialogProject() {
         if (b.id === current()?.id) return 1
         return 0
       })
-      .map((project) => ({
-        title: project.name ?? path.basename(project.canonical),
-        description: abbreviateHome(project.canonical, paths.home),
-        value: project.canonical,
-        category: project.id === current()?.id ? "Current" : "Projects",
-      }))
+      .map((project) => {
+        const title = project.name ?? path.basename(project.canonical)
+        const description = abbreviateHome(project.canonical, paths.home)
+        // Dialog padding, the current marker, title padding, and the separating space use nine columns.
+        const width = Math.min(60, dimensions().width - 2) - 9 - stringWidth(title)
+        return {
+          title,
+          description: truncateFilePath(description, width),
+          searchText: description,
+          value: project.canonical,
+          category: project.id === current()?.id ? "Current" : "Projects",
+        }
+      })
   })
 
   return (

packages/tui/src/ui/file-path.tsx

@@ -62,9 +62,14 @@ export function truncateFilePath(value: string, maxWidth: number) {
   const separatorWidth = stringWidth(separator)
   let width = stringWidth(prefix + basename)
   for (let index = segments.length - 2; index >= 0; index--) {
-    const next = stringWidth(segments[index]!) + separatorWidth
-    if (width + next > maxWidth) break
-    selected.unshift(segments[index]!)
+    const segment = segments[index]!
+    const next = stringWidth(segment) + separatorWidth
+    if (width + next > maxWidth) {
+      const available = maxWidth - width - separatorWidth
+      if (available > 1) selected.unshift(takeStart(segment, available - 1) + "…")
+      break
+    }
+    selected.unshift(segment)
     width += next
   }
   return prefix + selected.join(separator)

packages/tui/test/ui/file-path.test.ts

@@ -14,6 +14,11 @@ describe("truncateFilePath", () => {
     expect(truncateFilePath(path, 19)).toBe("…/dialog-select.tsx")
   })
 
+  test("uses remaining width for part of a long parent segment", () => {
+    const path = "/private/var/folders/run-17f048ec-dbb2-4b36-860c-98637bb51a8d/files"
+    expect(truncateFilePath(path, 40)).toBe("/…/run-17f048ec-dbb2-4b36-860c-98…/files")
+  })
+
   test("preserves the extension when the basename must shrink", () => {
     expect(truncateFilePath(path, 16)).toBe("…/dialog-se….tsx")
     expect(truncateFilePath("dialog-select.tsx", 12)).toBe("dialog-….tsx")