Add simple preferences display (just good enough to match functionality with addons section)

package_manager/__init__.py

@@ -538,6 +538,7 @@ else:
 
         displayed_packages = []
         expanded_packages = []
+        preference_package = None
 
         redraw = True
 
@@ -549,7 +550,6 @@ else:
         def draw(self, context):
             layout = self.layout
             wm = context.window_manager
-            prefs = context.user_preferences.addons[__package__].preferences
 
             mainrow = layout.row()
             spl = mainrow.split(.2)
@@ -649,6 +649,7 @@ else:
 
             def draw_package(metapkg: ConsolidatedPackage, layout: bpy.types.UILayout): #{{{
                 """Draws the given package"""
+                pkg = metapkg.get_display_version()
 
                 def draw_operators(metapkg, layout): # {{{
                     """
@@ -665,10 +666,12 @@ else:
                                     ).package_name=metapkg.name
                             layout.separator()
 
-                        # layout.operator(
+                        #TODO: only show preferences button if addon has preferences to show
-                        #         PACKAGE_OT_toggle_preferences.bl_idname,
+                        if pkg.enabled:
-                        #         text="Preferences",
+                            layout.operator(
-                        #         ).package_name=metapkg.name
+                                    WM_OT_package_toggle_preferences.bl_idname,
+                                    text="Preferences",
+                                    ).package_name=metapkg.name
                         layout.operator(
                                 PACKAGE_OT_uninstall.bl_idname,
                                 text="Uninstall",
@@ -680,6 +683,24 @@ else:
                                 ).package_name=metapkg.name
                     # }}}
 
+                def draw_preferences(pkg: Package, layout: bpy.types.UILayout):
+                    """Draw the package's preferences in the given layout"""
+                    addon_preferences = context.user_preferences.addons[pkg.module_name].preferences
+                    if addon_preferences is not None:
+                        draw = getattr(addon_preferences, "draw", None)
+                        if draw is not None:
+                            addon_preferences_class = type(addon_preferences)
+                            box_prefs = layout.box()
+                            box_prefs.label("Preferences:")
+                            addon_preferences_class.layout = box_prefs
+                            try:
+                                draw(context)
+                            except:
+                                import traceback
+                                traceback.print_exc()
+                                box_prefs.label(text="Error (see console)", icon='ERROR')
+                            del addon_preferences_class.layout
+
                 def collapsed(metapkg, layout):# {{{
                     """Draw collapsed version of package layout"""
                     pkg = metapkg.get_display_version()
@@ -798,6 +819,7 @@ else:
                         for version in metapkg.versions:
                             subvbox = pkgbox.box()
                             draw_version(subvbox, version)
+
                 # }}}
 
                 is_expanded = (metapkg.name in self.expanded_packages)
@@ -815,22 +837,9 @@ else:
                 else:
                     collapsed(metapkg, row)# }}}
 
-                # addon_preferences = userpref.addons[module_name].preferences
+                if pkg.installed and pkg.enabled and pkg.name == USERPREF_PT_packages.preference_package:
-                # if addon_preferences is not None:
+                    draw_preferences(pkg, pkgbox)
-                #     draw = getattr(addon_preferences, "draw", None)
+
-                #     if draw is not None:
-                #         addon_preferences_class = type(addon_preferences)
-                #         box_prefs = col_box.box()
-                #         box_prefs.label("Preferences:")
-                #         addon_preferences_class.layout = box_prefs
-                #         try:
-                #             draw(context)
-                #         except:
-                #             import traceback
-                #             traceback.print_exc()
-                #             box_prefs.label(text="Error (see console)", icon='ERROR')
-                #         del addon_preferences_class.layout
-                #
 
             def center_message(layout, msg: str):
                 """draw a label in the center of an extra-tall row"""
@@ -887,6 +896,24 @@ else:
 
             return {'FINISHED'}# }}}
 
+    class WM_OT_package_toggle_preferences(bpy.types.Operator):# {{{
+        bl_idname = "wm.package_toggle_preferences"
+        bl_label = ""
+        bl_description = "Toggle display of package preferences"
+        bl_options = {'INTERNAL'}
+
+        package_name = bpy.props.StringProperty(
+                name="Package Name",
+                description="Name of package whos preferences to display",
+                )
+
+        def invoke(self, context, event):
+            if USERPREF_PT_packages.preference_package == self.package_name:
+                USERPREF_PT_packages.preference_package = None
+            else:
+                USERPREF_PT_packages.preference_package = self.package_name
+            return {'FINISHED'}# }}}
+
     class PACKAGE_OT_toggle_enabled(bpy.types.Operator):# {{{
         bl_idname = "package.toggle_enabled"
         bl_label = ""
@@ -1018,6 +1045,7 @@ else:
         bpy.utils.register_class(PACKAGE_OT_refresh)
         bpy.utils.register_class(USERPREF_PT_packages)
         bpy.utils.register_class(WM_OT_package_toggle_expand)
+        bpy.utils.register_class(WM_OT_package_toggle_preferences)
         bpy.types.WindowManager.package_search = bpy.props.StringProperty(
                 name="Search",
                 description="Filter packages by name",
@@ -1055,6 +1083,7 @@ else:
         bpy.utils.unregister_class(PACKAGE_OT_refresh)
         bpy.utils.unregister_class(USERPREF_PT_packages)
         bpy.utils.unregister_class(WM_OT_package_toggle_expand)
+        bpy.utils.unregister_class(WM_OT_package_toggle_preferences)
         del bpy.types.WindowManager.package_search
         del bpy.types.WindowManager.package_install_filter