Change Vertical to DataTable

App.py

@@ -1,6 +1,6 @@
 from textual.containers import Container, Vertical
 from textual.app import ComposeResult, App
-from textual.widgets import Static, Header
+from textual.widgets import Static, Header, DataTable
 
 
 class FeedPane(Vertical):
@@ -9,6 +9,9 @@ class FeedPane(Vertical):
         self.content = content
         self.id = "feed-pane"
 
+    def add(self, e):
+        self.content.append(e)
+
     def compose(self):
         yield Vertical(*self.content, id="left-container")
 
@@ -25,9 +28,6 @@ class FeedItem(Static):
         self.update(self.content)
         self.on_event
 
-    def on_click(self):
-        self.update("x")
-
 
 class GUI(App):
     CSS_PATH = "app.css"
@@ -37,21 +37,33 @@ class GUI(App):
         self.i = 0
 
     def on_key(self, event):
-        item = self.query(FeedItem)[self.i]
+        # item = self.query(FeedItem)[self.i]
-        item.set_styles("color: auto;")
+        # item.set_styles("color: auto;")
         if event.key == "j":
             self.i += 1
         elif event.key == "k":
             self.i -= 1
+        elif event.key == "r":
+            pane = self.query_one(DataTable)
+            pane.data = {}
+            pane.row_count = 0
+            pane._line_no = 0
+            pane._y_offsets = []
+            pane._require_update_dimensions = True
+            pane.check_idle()
+        elif event.key == "a":
+            pane = self.query_one(DataTable)
+            pane.add_rows([["XXX"]])
         else:
             pass
-        item = self.query(FeedItem)[self.i]
+        # item = self.query(FeedItem)[self.i]
-        item.set_styles("color: blue;")
+        # item.set_styles("color: blue;")
 
     def compose(self) -> ComposeResult:
         yield Header()
         yield Container(
-            FeedPane([FeedItem(f"Feed# {number}", number) for number in range(15)]),
+            # FeedPane([FeedItem(f"Feed# {number}", number) for number in range(15)]),
+            DataTable(),
             Vertical(
                 *[Static("Horizontally"),
                   Static("Positioned"),
@@ -62,6 +74,12 @@ class GUI(App):
             id="app-grid",
         )
 
+    def on_mount(self):
+        dt = self.query_one(DataTable)
+        dt.add_column("Feeds", width = 60)
+        # dt.add_rows([[FeedItem(f"Feed# {number}", number)] for number in range(15)])
+        dt.add_rows([[str(number)] for number in range(15)])
+        dt.focus()
 
 if __name__ == "__main__":
     app = GUI()