Add repository list to package panel

Actually adding multiple repositories is disallowed for now

package_manager/__init__.py

@@ -75,7 +75,7 @@ class SubprocMixin:
 
     def quit(self):
         """Signals the state machine to stop this operator from running."""
-
+        self.cancel(bpy.context)
         self._state = 'QUIT'
 
     def invoke(self, context, event):
@@ -87,6 +87,7 @@ class SubprocMixin:
 
         # The subprocess should just be terminated when Blender quits. Without this,
         # Blender would hang while closing, until the subprocess terminates itself.
+        # TODO: Perhaps it would be better to fork when blender exits?
         self.process = self.create_subprocess()
         self.process.daemon = True
         self.process.start()
@@ -364,7 +365,19 @@ class PACKAGE_OT_refresh_repositories(SubprocMixin, bpy.types.Operator):
     bl_description = 'Check repositories for new and updated packages'
     bl_options = {'REGISTER'}
 
-    log = logging.getLogger(__name__ + ".PACKAGE_OT_refresh")
+    log = logging.getLogger(__name__ + ".PACKAGE_OT_refresh_repositories")
+    _running = False
+
+    def invoke(self, context, event):
+        PACKAGE_OT_refresh_repositories._running = True
+        return super().invoke(context, event)
+
+    @classmethod
+    def poll(cls, context):
+        return not cls._running
+
+    def cancel(self, context):
+        PACKAGE_OT_refresh_repositories._running = False
 
     def create_subprocess(self):
         """Starts the download process.
@@ -389,17 +402,7 @@ class PACKAGE_OT_refresh_repositories(SubprocMixin, bpy.types.Operator):
         import pathlib
 
         storage_path = pathlib.Path(bpy.utils.user_resource('CONFIG', 'packages', create=True))
-        repository_url = bpy.context.user_preferences.addons[__package__].preferences.repository_url
-
-        from urllib.parse import urlsplit, urlunsplit
-
-        parsed_url = urlsplit(repository_url)
-        if not parsed_url.path.endswith("repo.json"):
-            if parsed_url.path.endswith('/'):
-                new_path = parsed_url.path + "repo.json"
-            else:
-                new_path = parsed_url.path + "/repo.json"
-            repository_url = urlunsplit((parsed_url.scheme, parsed_url.netloc, new_path, parsed_url.query, parsed_url.fragment))
+        repository_url = bpy.context.user_preferences.addons[__package__].preferences.repositories[0].url
 
         proc = multiprocessing.Process(target=subproc.refresh,
                                        args=(self.pipe_subproc, storage_path, repository_url))
@@ -518,6 +521,63 @@ class PACKAGE_OT_load_repositories(SubprocMixin, bpy.types.Operator):
             self.log.error('Process died without telling us! Exit code was 0 though')
             self.report({'WARNING'}, 'Error downloading package, but process finished OK. This is weird.')
 
+class RepositoryProperty(bpy.types.PropertyGroup):
+    url = bpy.props.StringProperty(name="URL")
+    status = bpy.props.EnumProperty(name="Status", items=[
+            ("OK",        "Okay",              "FILE_TICK"),
+            ("NOTFOUND",  "Not found",         "ERROR"),
+            ("NOCONNECT", "Could not connect", "QUESTION"),
+            ])
+
+class PACKAGE_UL_repositories(bpy.types.UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+        layout.alignment='LEFT'
+        if len(item.name) == 0:
+            layout.label(item['url'])
+        else:
+            layout.label(item.name)
+
+def parse_repository_url(url: str) -> str:
+    """Sanitize repository url"""
+    from urllib.parse import urlsplit, urlunsplit
+    parsed_url = urlsplit(url)
+    new_path = parsed_url.path.rstrip("repo.json")
+    return urlunsplit((parsed_url.scheme, parsed_url.netloc, new_path, parsed_url.query, parsed_url.fragment))
+
+class PACKAGE_OT_add_repository(bpy.types.Operator):
+    bl_idname = "package.add_repository"
+    bl_label = "Add Repository"
+
+    url = bpy.props.StringProperty(name="Repository URL")
+
+    def invoke(self, context, event):
+        wm = context.window_manager
+        return wm.invoke_props_dialog(self)
+
+    def execute(self, context):
+        prefs = context.user_preferences.addons[__package__].preferences
+        if len(prefs.repositories) > 0:
+            self.report({'ERROR'}, "Only one repository at a time is currently supported")
+            return {'CANCELLED'}
+
+        if len(self.url) == 0:
+            self.report({'ERROR'}, "Repository URL not specified")
+            return {'CANCELLED'}
+
+        repo = prefs.repositories.add()
+        repo.url = parse_repository_url(self.url)
+
+        context.area.tag_redraw()
+        return {'FINISHED'}
+
+class PACKAGE_OT_remove_repository(bpy.types.Operator):
+    bl_idname = "package.remove_repository"
+    bl_label = "Remove Repository"
+
+    def execute(self, context):
+        prefs = context.user_preferences.addons[__package__].preferences
+        prefs.repositories.remove(prefs.active_repository)
+        return {'FINISHED'}
 
 class USERPREF_PT_packages(bpy.types.Panel):
     bl_label = "Package Management"
@@ -539,12 +599,25 @@ class USERPREF_PT_packages(bpy.types.Panel):
     def draw(self, context):
         layout = self.layout
         wm = context.window_manager
+        prefs = context.user_preferences.addons[__package__].preferences
 
         main = layout.row()
-        spl = main.split(.12)
+        spl = main.split(.22)
         sidebar = spl.column(align=True)
         pkgzone = spl.column()
 
+        sidebar.label("Repositories")
+
+        row = sidebar.row()
+        row.template_list("PACKAGE_UL_repositories", "", prefs, "repositories", prefs, "active_repository")
+        col = row.column(align=True)
+        col.operator(PACKAGE_OT_add_repository.bl_idname, text="", icon='ZOOMIN')
+        col.operator(PACKAGE_OT_remove_repository.bl_idname, text="", icon='ZOOMOUT')
+
+        sidebar.separator()
+        sidebar.operator(PACKAGE_OT_refresh_repositories.bl_idname)
+
+        sidebar.separator()
         sidebar.label(text="Category")
         sidebar.prop(wm, "addon_filter", text="")
 
@@ -800,6 +873,12 @@ class PackageManagerPreferences(bpy.types.AddonPreferences):
             name='Repository URL',
             description='Temporary repository URL')
 
+    repositories = bpy.props.CollectionProperty(
+            type=RepositoryProperty,
+            name="Repositories",
+            )
+    active_repository = bpy.props.IntProperty()
+
     def draw(self, context):
         layout = self.layout
 
@@ -869,6 +948,12 @@ def register():
         name="Install filter",
         default='AVAILABLE',
         )
+
+    bpy.utils.register_class(RepositoryProperty)
+    bpy.utils.register_class(PACKAGE_OT_add_repository)
+    bpy.utils.register_class(PACKAGE_OT_remove_repository)
+    bpy.utils.register_class(PACKAGE_UL_repositories)
+
     bpy.utils.register_class(PackageManagerPreferences)
 
 
@@ -883,4 +968,10 @@ def unregister():
     bpy.utils.unregister_class(WM_OT_package_toggle_expand)
     del bpy.types.WindowManager.package_search
     del bpy.types.WindowManager.package_install_filter
+
+    bpy.utils.unregister_class(RepositoryProperty)
+    bpy.utils.unregister_class(PACKAGE_OT_add_repository)
+    bpy.utils.unregister_class(PACKAGE_OT_remove_repository)
+    bpy.utils.unregister_class(PACKAGE_UL_repositories)
+
     bpy.utils.unregister_class(PackageManagerPreferences)