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TUI/modalscreen/selection_modal.py

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+from textual.app import ComposeResult
+from textual.screen import ModalScreen
+from textual.containers import Container, ScrollableContainer
+from textual.widgets import Static, Button, Label
+from typing import List, Callable
+
+class SelectionModal(ModalScreen[str]):
+    """A modal for selecting a type from a list of strings."""
+
+    CSS = """
+    SelectionModal {
+        align: center middle;
+        background: rgba(0, 0, 0, 0.5);
+    }
+
+    #selection-container {
+        width: 40%;
+        height: 60%;
+        background: $panel;
+        border: thick $primary;
+        padding: 1;
+    }
+
+    .selection-title {
+        background: $accent;
+        color: $text;
+        padding: 0 1;
+        margin-bottom: 1;
+        text-align: center;
+        text-style: bold;
+        height: 3;
+        content-align: center middle;
+    }
+
+    .selection-button {
+        width: 100%;
+        margin-bottom: 1;
+    }
+
+    #selection-cancel {
+        width: 100%;
+        margin-top: 1;
+        background: $error;
+    }
+    """
+
+    def __init__(self, title: str, options: List[str]) -> None:
+        super().__init__()
+        self.selection_title = title
+        self.options = sorted(options)
+
+    def compose(self) -> ComposeResult:
+        with Container(id="selection-container"):
+            yield Static(self.selection_title, classes="selection-title")
+            with ScrollableContainer():
+                for opt in self.options:
+                    yield Button(opt, id=f"opt-{opt}", classes="selection-button")
+            yield Button("Cancel", id="selection-cancel")
+
+    def on_button_pressed(self, event: Button.Pressed) -> None:
+        if event.button.id == "selection-cancel":
+            self.dismiss("")
+        elif event.button.id and event.button.id.startswith("opt-"):
+            selection = event.button.id.replace("opt-", "")
+            self.dismiss(selection)