code release

xlib/mp/csw/Error.py

@@ -0,0 +1,53 @@
+from typing import Union
+
+from xlib.python import EventListener
+
+from .CSWBase import ControlClient, ControlHost
+
+
+class Error:
+    """
+    One-way error control.
+
+    """
+
+    class Client(ControlClient):
+        def __init__(self):
+            ControlClient.__init__(self)
+
+            self._on_error_evl = EventListener()
+            self._call_on_msg('error', self._on_msg_error)
+
+        def _on_msg_error(self, text):
+            self._on_error_evl.call(text)
+
+        def call_on_error(self, func_or_list):
+            """
+            Call when the error message arrive
+
+             func(text : Union[str,None])
+            """
+            self._on_error_evl.add(func_or_list)
+
+        def _on_reset(self):
+            self._on_msg_error(None)
+
+
+    class Host(ControlHost):
+        def __init__(self):
+            ControlHost.__init__(self)
+
+
+        def set_error(self, text : Union[str, None]):
+            """
+            set tex
+
+             text   str or None
+            """
+            if text is None:
+                self.disable()
+            else:
+                self.enable()
+                self._send_msg('error', text)
+
+