Move MIME type declarations into constructors of readers

So that if you disable the plug-in, the MIME type declaration is also not added.

Fixes #4151.

1 files changed, 7 insertions, 8 deletions

diff --git a/plugins/GCodeGzReader/GCodeGzReader.py b/plugins/GCodeGzReader/GCodeGzReader.py
index 4d33f00870..d075e4e3b0 100644
--- a/plugins/GCodeGzReader/GCodeGzReader.py
+++ b/plugins/GCodeGzReader/GCodeGzReader.py
@@ -7,20 +7,19 @@ from UM.Mesh.MeshReader import MeshReader #The class we're extending/implementin
 from UM.MimeTypeDatabase import MimeTypeDatabase, MimeType #To add the .gcode.gz files to the MIME type database.
 from UM.PluginRegistry import PluginRegistry
 
-MimeTypeDatabase.addMimeType(
-    MimeType(
-        name = "application/x-cura-compressed-gcode-file",
-        comment = "Cura Compressed GCode File",
-        suffixes = ["gcode.gz"]
-    )
-)
-
 ##  A file reader that reads gzipped g-code.
 #
 #   If you're zipping g-code, you might as well use gzip!
 class GCodeGzReader(MeshReader):
     def __init__(self) -> None:
         super().__init__()
+        MimeTypeDatabase.addMimeType(
+            MimeType(
+                name = "application/x-cura-compressed-gcode-file",
+                comment = "Cura Compressed GCode File",
+                suffixes = ["gcode.gz"]
+            )
+        )
         self._supported_extensions = [".gcode.gz"]
 
     def _read(self, file_name):