Add support for TUI applications

Makefile

@@ -21,3 +21,4 @@ clean: $(PY_PREFIX)clean $(DZ_PREFIX)clean
 s:
 	./venv$(PYTHON_VERSION)/bin/runtimepy arbiter --curses \
 		./local/arbiter/test.yaml
+	+@echo "success"

local/arbiter/tasks/__init__.py

@@ -27,7 +27,18 @@ async def noop2(app: AppInfo) -> int:
 async def gui(app: AppInfo) -> int:
     """Run a channel GUI for application connections."""
 
-    print(app)
+    window = app.tui.window
+    while not app.stop.is_set():
+        data = window.getch()
+        if data != -1 and not await app.tui.handle_char(data):
+            # trigger this with 'q'
+            app.stop.set()
+
+        # do stuff
+
+        # make this updating a task
+        app.tui.tui_update()
+        await asyncio.sleep(0.1)
 
     return 0
 

local/arbiter/test.yaml

@@ -16,4 +16,4 @@ tasks:
 
 app:
   # - [tasks.test, tasks.noop1, tasks.noop2]
-  - tasks.noop1
+  - tasks.gui

runtimepy/net/arbiter/base.py

@@ -199,6 +199,7 @@ async def _entry(
                         self._namespace,
                         self.stop_sig,
                         config if config is not None else self._config,
+                        self,
                     )
 
                     # Initialize tasks.

runtimepy/net/arbiter/info.py

@@ -19,6 +19,7 @@
 
 # internal
 from runtimepy.net.connection import Connection as _Connection
+from runtimepy.tui.mixin import TuiMixin
 
 ConnectionMap = _MutableMapping[str, _Connection]
 T = _TypeVar("T", bound=_Connection)
@@ -48,6 +49,8 @@ class AppInfo:
     # Configuration data that may be specified in a configuration file.
     config: _JsonObject
 
+    tui: TuiMixin
+
     def with_new_logger(self, name: str) -> "AppInfo":
         """Get a copy of this AppInfo instance, but with a new logger."""
 
@@ -58,6 +61,7 @@ def with_new_logger(self, name: str) -> "AppInfo":
             self.names,
             self.stop,
             self.config,
+            self.tui,
         )
 
     def search(