Add HookableInMemoryHandler logging handler

qt_ui/logging_handler.py

@@ -0,0 +1,38 @@
+import logging
+import typing
+
+LogHook = typing.Callable[[str], None]
+
+
+class HookableInMemoryHandler(logging.Handler):
+    """Hookable in-memory logging handler for logs window"""
+
+    _log: str
+    _hook: typing.Optional[typing.Callable[[str], None]]
+
+    def __init__(self, *args, **kwargs):
+        super(HookableInMemoryHandler, self).__init__(*args, **kwargs)
+        self._log = ""
+        self._hook = None
+
+    @property
+    def log(self) -> str:
+        return self._log
+
+    def emit(self, record):
+        msg = self.format(record)
+        self._log += msg + "\n"
+        if self._hook is not None:
+            self._hook(msg)
+
+    def write(self, m):
+        pass
+
+    def clearLog(self) -> None:
+        self._log = ""
+
+    def setHook(self, hook: typing.Callable[[str], None]) -> None:
+        self._hook = hook
+
+    def clearHook(self) -> None:
+        self._hook = None