From bf95fa1f56b25bd52f986b2baf1ea9502571c6af Mon Sep 17 00:00:00 2001
From: belono <tiotil.lindeman@gmail.com>
Date: Fri, 4 Aug 2023 12:14:09 +0200
Subject: [PATCH] Add self-open mechanism

---
 src/escpos/escpos.py | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/escpos/escpos.py b/src/escpos/escpos.py
index 8f5a37c..a679510 100644
--- a/src/escpos/escpos.py
+++ b/src/escpos/escpos.py
@@ -114,7 +114,7 @@ class Escpos(object):
     class.
     """
 
-    device = None
+    _device = False
 
     def __init__(self, profile=None, magic_encode_args=None, **kwargs) -> None:
         """Initialize ESCPOS Printer.
@@ -128,6 +128,22 @@ class Escpos(object):
         """Call self.close upon deletion."""
         self.close()
 
+    @property
+    def device(self):
+        """Implements a self-open mechanism."""
+        if self._device is False:
+            # Open device if not previously opened
+            self.open()
+        return self._device
+
+    @device.setter
+    def device(self, new_device):
+        self._device = new_device
+
+    def open(self):
+        """Open a printer device/connection."""
+        pass
+
     @abstractmethod
     def _raw(self, msg: bytes) -> None:
         """Send raw data to the printer.