Minor UX improvements to library name and Sverchok UI

src/blenderbim/blenderbim/bim/module/model/data.py

@@ -385,7 +385,7 @@ class SverchokData:
     @classmethod
     def load(cls):
         cls.is_loaded = True
-        cls.data = {"parameters": cls.parameters()}
+        cls.data = {"parameters": cls.parameters(), "has_sverchok": cls.has_sverchok()}
 
     @classmethod
     def parameters(cls):
@@ -396,3 +396,12 @@ class SverchokData:
             if parameters:
                 parameters["data"] = json.loads(parameters.get("Data", "[]") or "[]")
                 return parameters
+
+    @classmethod
+    def has_sverchok(cls):
+        try:
+            import sverchok
+
+            return True
+        except:
+            return False

src/blenderbim/blenderbim/bim/module/model/sverchok_modifier.py

@@ -76,7 +76,7 @@ def update_sverchok_modifier(context):
 # UI operators
 class CreateNewSverchokGraph(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.create_new_sverchok_graph"
-    bl_label = "Create new sverchok graph"
+    bl_label = "Create New Sverchok Graph"
     bl_options = {"REGISTER"}
 
     def _execute(self, context):
@@ -101,7 +101,7 @@ class CreateNewSverchokGraph(bpy.types.Operator, tool.Ifc.Operator):
 
 class DeleteSverchokGraph(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.delete_sverchok_graph"
-    bl_label = "Delete selected sverchok graph"
+    bl_label = "Delete Selected Sverchok Graph"
     bl_options = {"REGISTER"}
 
     def _execute(self, context):
@@ -120,7 +120,7 @@ class DeleteSverchokGraph(bpy.types.Operator, tool.Ifc.Operator):
 
 class UpdateDataFromSverchok(bpy.types.Operator, tool.Ifc.Operator):
     bl_idname = "bim.update_data_from_sverchok"
-    bl_label = "Update data from sverchok"
+    bl_label = "Update Data From Sverchok"
     bl_options = {"REGISTER"}
 
     def invoke(self, context, event):

src/blenderbim/blenderbim/bim/module/model/ui.py

@@ -385,7 +385,9 @@ class BIM_PT_sverchok(bpy.types.Panel):
         if not SverchokData.is_loaded:
             SverchokData.load()
 
-        self.layout.label(text="Requires SVERCHOK addon to be enabled.", icon="SEQUENCE_COLOR_02")
+        if not SverchokData.data["has_sverchok"]:
+            self.layout.label(text="Requires Sverchok Add-on", icon="ERROR")
+            return
 
         props = context.active_object.BIMSverchokProperties
         self.layout.prop_search(props, "node_group", bpy.data, "node_groups")