add auto_updater

.gitignore

@@ -5,3 +5,4 @@ venv
 # vim
 *.swo
 *.swp
+/abc3d_updater/*

__init__.py

@@ -26,11 +26,13 @@ if "bpy" in locals():
     importlib.reload(utils)
     importlib.reload(butils)
     importlib.reload(bimport)
+    importlib.reload(addon_updater_ops)
 else:
     from .common import Font
     from .common import utils
     from . import butils
     from . import bimport
+    from . import addon_updater_ops
 
 import bpy
 import math
@@ -51,6 +53,8 @@ def getPreferences(context):
     preferences = context.preferences
     return preferences.addons[__name__].preferences
 
+
+@addon_updater_ops.make_annotations
 class ABC3D_addonPreferences(bpy.types.AddonPreferences):
     """ABC3D Addon Preferences
 
@@ -58,6 +62,39 @@ class ABC3D_addonPreferences(bpy.types.AddonPreferences):
 
     bl_idname = __name__
 
+    # Addon updater preferences.
+    auto_check_update = bpy.props.BoolProperty(
+        name="Auto-check for Update",
+        description="If enabled, auto-check for updates using an interval",
+        default=False)
+
+    updater_interval_months = bpy.props.IntProperty(
+        name='Months',
+        description="Number of months between checking for updates",
+        default=0,
+        min=0)
+
+    updater_interval_days = bpy.props.IntProperty(
+        name='Days',
+        description="Number of days between checking for updates",
+        default=7,
+        min=0,
+        max=31)
+
+    updater_interval_hours = bpy.props.IntProperty(
+        name='Hours',
+        description="Number of hours between checking for updates",
+        default=0,
+        min=0,
+        max=23)
+
+    updater_interval_minutes = bpy.props.IntProperty(
+        name='Minutes',
+        description="Number of minutes between checking for updates",
+        default=0,
+        min=0,
+        max=59)
+
     def get_default_assets_dir():
         return bpy.utils.user_resource(
                 'DATAFILES',
@@ -92,6 +129,13 @@ class ABC3D_addonPreferences(bpy.types.AddonPreferences):
         layout.label(text="Directory for storage of fonts and other assets:")
         layout.prop(self, "assets_dir")
 
+        # Works best if a column, or even just self.layout.
+        mainrow = layout.row()
+        col = mainrow.column()
+
+        # Updater draw function, could also pass in col as third arg.
+        addon_updater_ops.update_settings_ui(self, context)
+
 
 class ABC3D_available_font(bpy.types.PropertyGroup):
     font_name: bpy.props.StringProperty(name="")
@@ -1500,7 +1544,10 @@ def on_depsgraph_update(scene, depsgraph):
 
 
 def register():
+    addon_updater_ops.register(bl_info)
+
     for cls in classes:
+        addon_updater_ops.make_annotations(cls)  # Avoid blender 2.8 warnings.
         bpy.utils.register_class(cls)
     bpy.types.Scene.abc3d_data = bpy.props.PointerProperty(type=ABC3D_data)
     # bpy.types.Object.__del__ = lambda self: print(f"Bye {self.name}")
@@ -1528,7 +1575,9 @@ def register():
     Font.name_to_glyph_d = Font.generate_name_to_glyph_d()
 
 def unregister():
-    for cls in classes:
+    addon_updater_ops.unregister()
+
+    for cls in reversed(classes):
         bpy.utils.unregister_class(cls)
 
     # remove autostart when loading blend file