改进

src/heurams/interface/widgets/fileexpr.py

@@ -0,0 +1,25 @@
+from textual.widget import Widget
+
+class FileSelector(Widget):
+    def __init__(self, *children: Widget, name: str | None = None, id: str | None = None, classes: str | None = None, disabled: bool = False, markup: bool = True) -> None:
+        super().__init__(*children, name=name, id=id, classes=classes, disabled=disabled, markup=markup)
+    def a(self):
+        file_list_widget = self.query_one("#file-list", ListView)
+        nucleon_path = pathlib.Path("./nucleon")
+        nucleon_files = sorted(
+            [f for f in nucleon_path.iterdir() if f.suffix == ".toml"],
+            key=lambda f: Glimpse(pt.NucleonUnion(f)).next_date,
+            reverse=True
+        )
+
+        if nucleon_files:
+            for file in nucleon_files:
+                text = self.item_desc_generator(pathlib.Path(file))
+                file_list_widget.append(ListItem(
+                    Label(text[0] + '\n' + text[1]),
+                    ))
+        else:
+            file_list_widget.append(
+                ListItem(Static("在 ./nucleon/ 中未找到任何内容源数据文件.\n请放置文件后重启应用.\n或者新建空的单元集."))
+            )
+            file_list_widget.disabled = True