Create event handler to monitor bash commands

solvable/src/event_handler_main.py

@@ -19,13 +19,25 @@ LOG = logging.getLogger(__name__)
 logging.basicConfig(level=logging.DEBUG)
 
 
-def cenator(history):
+class TerminalCallbackEventHandler(EventHandlerBase):
     """
-    Logs commands executed in terminal to messages.
+    Logs commands executed in terminal to messages and invokes an
+    additional callback function to handle special commands.
     !! Please remove from production code. !!
     """
-    LOG.debug('User executed command: "%s"', history[-1])
-    MessageSender().send('JOHN CENA', f'You\'ve executed "{history[-1]}"')
+    def __init__(self, key, callback):
+        self.callback = callback
+        super().__init__(key)
+
+    def handle_event(self, message):
+        command = message['value']
+        self.cenator(command)
+        self.callback(command)
+
+    @staticmethod
+    def cenator(command):
+        LOG.debug('User executed command: "%s"', command)
+        MessageSender().send('JOHN CENA', f'You\'ve executed "{command}"')
 
 
 class TestCommands(TerminalCommands):
@@ -123,6 +135,10 @@ def main():
         key='shell',
         monitor=BashMonitor(TFWENV.HISTFILE)
     )
+    commands = TerminalCallbackEventHandler( # Reacts to terminal commands
+        'history.bash',
+        TestCommands(bashrc=f'/home/{TAOENV.USER}/.bashrc').callback
+    )
     processmanager = ProcessManagingEventHandler(  # Handles 'deploy' button clicks
         key='processmanager',
         dirmonitor=ide.monitor,
@@ -147,11 +163,6 @@ def main():
         key='test'
     )
 
-    # Terminal command handlers
-    commands = TestCommands(bashrc=f'/home/{TAOENV.USER}/.bashrc')
-    terminal.historymonitor.subscribe_callback(commands.callback)
-    terminal.historymonitor.subscribe_callback(cenator)
-
     event_handlers = EventHandlerBase.get_local_instances()
     def stop(sig, frame):
         for eh in event_handlers: