add CommandHistory

add up/down binds for request-input

src/vban_tui/history.py

@@ -0,0 +1,23 @@
+from collections import UserList
+
+
+class CommandHistory(UserList):
+    """A simple list to store command history."""
+
+    def add(self, command: str):
+        """Add a command to the history if it's not empty and not a duplicate of the last."""
+        command = command.strip()
+        if command and (not self.data or command != self.data[-1]):
+            self.data.append(command)
+
+    def get_previous(self, index: int) -> str:
+        """Get the previous command based on the current index."""
+        if 0 <= index < len(self.data):
+            return self.data[index]
+        return ''
+
+    def get_next(self, index: int) -> str:
+        """Get the next command based on the current index."""
+        if 0 <= index < len(self.data):
+            return self.data[index]
+        return ''

src/vban_tui/tui.py

@@ -3,6 +3,7 @@ from textual.app import App, ComposeResult
 from textual.containers import Grid
 from textual.widgets import RichLog
 
+from .history import CommandHistory
 from .hybrid import LabelInput
 from .settings import Settings
 
@@ -15,6 +16,8 @@ class VbanTui(App):
     def __init__(self):
         super().__init__()
         self._settings = Settings()
+        self._command_history = CommandHistory()
+        self._history_index = None
 
     def compose(self) -> ComposeResult:
         """Create child widgets for the app."""
@@ -61,17 +64,46 @@ class VbanTui(App):
 
     def on_key(self, event):
         """Handle key events."""
+        request_input = self.query_one('#request-input')
         match event.key:
             case 'q':
                 self.exit()
-            case 'enter' if self.query_one('#request-input').has_focus:
-                self.query_one('#response-log').clear()
-                request_input = self.query_one('#request-input')
+            case 'enter' if request_input.has_focus:
                 request_input.add_class('request-sent')
                 self.send_request()
                 self.set_timer(0.5, lambda: request_input.remove_class('request-sent'))
 
+                value = request_input.value.strip()
+                if value:
+                    self._command_history.add(value)
+                self._history_index = None
+                self.query_one('#request-input').clear()
+            case 'up' if request_input.has_focus:
+                if self._command_history:
+                    if self._history_index is None:
+                        self._history_index = len(self._command_history) - 1
+                    elif self._history_index > 0:
+                        self._history_index -= 1
+                    request_input.value = self._command_history.get_previous(
+                        self._history_index
+                    )
+            case 'down' if request_input.has_focus:
+                if self._command_history and self._history_index is not None:
+                    if self._history_index < len(self._command_history) - 1:
+                        self._history_index += 1
+                        request_input.value = self._command_history.get_next(
+                            self._history_index
+                        )
+                    else:
+                        self._history_index = None
+                        request_input.value = ''
+
     def send_request(self):
+        request = self.query_one('#request-input').value.strip()
+        if request == 'clear':
+            self.query_one('#response-log').clear()
+            return
+
         with vban_cmd.api(
             'potato',
             host=self.query_one('#host-input').value,
@@ -79,7 +111,7 @@ class VbanTui(App):
             streamname=self.query_one('#streamname-input').value,
             disable_rt_listeners=True,
         ) as vban:
-            if response := vban.sendtext(self.query_one('#request-input').value):
+            if response := vban.sendtext(request):
                 self.query_one('#response-log').write(response)