Core: CommonClient: command history and echo (#3236)

* client: Added command history access with up/down and command echo in common client

* client: Changed command echo colour to orange

* client: removed star import from typing

* client: updated code style to match style guideline

* client: adjusted ordering of calling parent constructor in command prompt input constructor

* client: Fixed issues identified by beauxq in PR; fixed some typing issues

* client: PR comments; replaced command history list with deque

CommonClient.py

@@ -493,6 +493,11 @@ class CommonContext:
         """Gets called before sending a Say to the server from the user.
         Returned text is sent, or sending is aborted if None is returned."""
         return text
+    
+    def on_ui_command(self, text: str) -> None:
+        """Gets called by kivy when the user executes a command starting with `/` or `!`.
+        The command processor is still called; this is just intended for command echoing."""
+        self.ui.print_json([{"text": text, "type": "color", "color": "orange"}])
 
     def update_permissions(self, permissions: typing.Dict[str, int]):
         for permission_name, permission_flag in permissions.items():

NetUtils.py

@@ -198,7 +198,8 @@ class JSONtoTextParser(metaclass=HandlerMeta):
         "slateblue": "6D8BE8",
         "plum": "AF99EF",
         "salmon": "FA8072",
-        "white": "FFFFFF"
+        "white": "FFFFFF",
+        "orange": "FF7700",
     }
 
     def __init__(self, ctx):

data/client.kv

@@ -13,6 +13,7 @@
     plum: "AF99EF"  # typically progression item
     salmon: "FA8072"  # typically trap item
     white: "FFFFFF"  # not used, if you want to change the generic text color change color in Label
+    orange: "FF7700"  # Used for command echo
 <Label>:
     color: "FFFFFF"
 <TabbedPanel>:

kvui.py

@@ -3,6 +3,7 @@ import logging
 import sys
 import typing
 import re
+from collections import deque
 
 if sys.platform == "win32":
     import ctypes
@@ -380,6 +381,57 @@ class ConnectBarTextInput(TextInput):
         return super(ConnectBarTextInput, self).insert_text(s, from_undo=from_undo)
 
 
+def is_command_input(string: str) -> bool:
+    return len(string) > 0 and string[0] in "/!"
+
+
+class CommandPromptTextInput(TextInput):
+    MAXIMUM_HISTORY_MESSAGES = 50
+
+    def __init__(self, **kwargs) -> None:
+        super().__init__(**kwargs)
+        self._command_history_index = -1
+        self._command_history: typing.Deque[str] = deque(maxlen=CommandPromptTextInput.MAXIMUM_HISTORY_MESSAGES)
+    
+    def update_history(self, new_entry: str) -> None:
+        self._command_history_index = -1
+        if is_command_input(new_entry):
+            self._command_history.appendleft(new_entry)
+
+    def keyboard_on_key_down(
+        self,
+        window,
+        keycode: typing.Tuple[int, str],
+        text: typing.Optional[str],
+        modifiers: typing.List[str]
+    ) -> bool:
+        """
+        :param window: The kivy window object
+        :param keycode: A tuple of (keycode, keyname). Keynames are always lowercase
+        :param text: The text printed by this key, not accounting for modifiers, or `None` if no text.
+                     Seems to pretty naively interpret the keycode as unicode, so numlock can return odd characters.
+        :param modifiers: A list of string modifiers, like `ctrl` or `numlock`
+        """
+        if keycode[1] == 'up':
+            self._change_to_history_text_if_available(self._command_history_index + 1)
+            return True
+        if keycode[1] == 'down':
+            self._change_to_history_text_if_available(self._command_history_index - 1)
+            return True
+        return super().keyboard_on_key_down(window, keycode, text, modifiers)
+    
+    def _change_to_history_text_if_available(self, new_index: int) -> None:
+        if new_index < -1:
+            return
+        if new_index >= len(self._command_history):
+            return
+        self._command_history_index = new_index
+        if new_index == -1:
+            self.text = ""
+            return
+        self.text = self._command_history[self._command_history_index]
+
+
 class MessageBox(Popup):
     class MessageBoxLabel(Label):
         def __init__(self, **kwargs):
@@ -415,7 +467,7 @@ class GameManager(App):
         self.commandprocessor = ctx.command_processor(ctx)
         self.icon = r"data/icon.png"
         self.json_to_kivy_parser = KivyJSONtoTextParser(ctx)
-        self.log_panels = {}
+        self.log_panels: typing.Dict[str, Widget] = {}
 
         # keep track of last used command to autofill on click
         self.last_autofillable_command = "hint"
@@ -499,7 +551,7 @@ class GameManager(App):
         info_button = Button(size=(dp(100), dp(30)), text="Command:", size_hint_x=None)
         info_button.bind(on_release=self.command_button_action)
         bottom_layout.add_widget(info_button)
-        self.textinput = TextInput(size_hint_y=None, height=dp(30), multiline=False, write_tab=False)
+        self.textinput = CommandPromptTextInput(size_hint_y=None, height=dp(30), multiline=False, write_tab=False)
         self.textinput.bind(on_text_validate=self.on_message)
         self.textinput.text_validate_unfocus = False
         bottom_layout.add_widget(self.textinput)
@@ -557,14 +609,18 @@ class GameManager(App):
 
         self.ctx.exit_event.set()
 
-    def on_message(self, textinput: TextInput):
+    def on_message(self, textinput: CommandPromptTextInput):
         try:
             input_text = textinput.text.strip()
             textinput.text = ""
+            textinput.update_history(input_text)
 
             if self.ctx.input_requests > 0:
                 self.ctx.input_requests -= 1
                 self.ctx.input_queue.put_nowait(input_text)
+            elif is_command_input(input_text):
+                self.ctx.on_ui_command(input_text)
+                self.commandprocessor(input_text)
             elif input_text:
                 self.commandprocessor(input_text)
 

worlds/sc2/Client.py

@@ -122,7 +122,6 @@ class ColouredMessage:
 
 class StarcraftClientProcessor(ClientCommandProcessor):
     ctx: SC2Context
-    echo_commands = True
 
     def formatted_print(self, text: str) -> None:
         """Prints with kivy formatting to the GUI, and also prints to command-line and to all logs"""