[backend][assetmodel] Made AssetType a python enum

This will make the enum itself more usable. Style wise, this makes
it an independent element of AssetModel.

beat/editor/backend/assetmodel.py

@@ -25,25 +25,28 @@
 
 import os
 
+from enum import Enum
+
 from PyQt5.QtCore import pyqtSignal
 from PyQt5.QtCore import pyqtSlot
 from PyQt5.QtCore import pyqtProperty
-from PyQt5.QtCore import Q_ENUMS
 from PyQt5.QtCore import QStringListModel
 
 
-class AssetType:
+class AssetType(Enum):
     """All possible assets available on the BEAT platform"""
 
-    Unknown = 0
-    Algorithm = 1
-    Database = 2
-    Dataformat = 3
-    Experiment = 4
-    Library = 5
-    Plotter = 6
-    PlotterParameters = 7
-    Toolchain = 8
+    (
+        Unknown,
+        Algorithm,
+        Database,
+        Dataformat,
+        Experiment,
+        Library,
+        Plotter,
+        PlotterParameters,
+        Toolchain,
+    ) = range(9)
 
     @classmethod
     def path(cls, type_):
@@ -68,11 +71,9 @@ class AssetType:
         return path
 
 
-class AssetModel(QStringListModel, AssetType):
+class AssetModel(QStringListModel):
     """The asset model present a list of available asset from a given type"""
 
-    Q_ENUMS(AssetType)
-
     assetTypeChanged = pyqtSignal(AssetType)
     prefixPathChanged = pyqtSignal(str)
 

beat/editor/test/test_models.py

@@ -23,7 +23,7 @@
 #                                                                             #
 ###############################################################################
 
-from ..backend.assetmodel import AssetModel
+from ..backend.assetmodel import AssetModel, AssetType
 
 
 class TestAssetModel:
@@ -31,7 +31,7 @@ class TestAssetModel:
 
     def test_model_load(self, qtbot, test_prefix):
         model = AssetModel()
-        asset_type = AssetModel.Dataformat
+        asset_type = AssetType.Dataformat
 
         with qtbot.waitSignals(
             [model.assetTypeChanged, model.prefixPathChanged]
@@ -48,7 +48,7 @@ class TestAssetModel:
 
     def test_experiment_model_load(self, qtbot, test_prefix):
         model = AssetModel()
-        asset_type = AssetModel.Experiment
+        asset_type = AssetType.Experiment
 
         with qtbot.waitSignals(
             [model.assetTypeChanged, model.prefixPathChanged]