You can now toggle visibility and wireframe modes of linked models and fix bug where links with the same name were not unique

src/blenderbim/blenderbim/bim/module/project/operator.py

@@ -708,7 +708,7 @@ class LoadLink(bpy.types.Operator):
                     continue
                 bpy.data.scenes[0].collection.children.link(child)
         link = context.scene.BIMProjectProperties.links.get(filepath)
-        link.collection_name = child.name
+        link.collection = child
         link.is_loaded = True
         return {"FINISHED"}
 
@@ -718,11 +718,20 @@ class ToggleLinkVisibility(bpy.types.Operator):
     bl_label = "Toggle Link Visibility"
     bl_options = {"REGISTER", "UNDO"}
     bl_description = "Toggle visibility between SOLID and WIREFRAME"
-    collection_name: bpy.props.StringProperty()
+    link: bpy.props.StringProperty()
+    mode: bpy.props.StringProperty()
 
     def execute(self, context):
-        collection_name = self.collection_name
-        objs = filter(lambda obj: "IfcOpeningElement" not in obj.name, bpy.data.collections[collection_name].all_objects)
+        props = context.scene.BIMProjectProperties
+        link = props.links.get(self.link)
+        if self.mode == "WIREFRAME":
+            self.toggle_wireframe(link)
+        elif self.mode == "VISIBLE":
+            self.toggle_visibility(link)
+        return {"FINISHED"}
+
+    def toggle_wireframe(self, link):
+        objs = filter(lambda obj: "IfcOpeningElement" not in obj.name, link.collection.all_objects)
         for i,obj in enumerate(objs):
             if i == 0:
                 if obj.display_type == "WIRE":
@@ -730,7 +739,22 @@ class ToggleLinkVisibility(bpy.types.Operator):
                 else:
                     display_type = "WIRE"
             obj.display_type = display_type
-        return {"FINISHED"}
+        link.is_wireframe = display_type == "WIRE"
+
+    def toggle_visibility(self, link):
+        queue = [bpy.context.view_layer.layer_collection]
+        layer_collection = None
+
+        while queue:
+            layer = queue.pop()
+            if layer.collection == link.collection:
+                layer_collection = layer
+                break
+            queue.extend(list(layer.children))
+
+        if layer_collection:
+            layer_collection.exclude = not layer_collection.exclude
+            link.is_hidden = layer_collection.exclude
 
 
 class ExportIFC(bpy.types.Operator):

src/blenderbim/blenderbim/bim/module/project/prop.py

@@ -23,6 +23,7 @@ from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.prop import StrProperty
 from bpy.types import PropertyGroup
 from bpy.props import (
+    PointerProperty,
     BoolProperty,
     CollectionProperty,
     EnumProperty,
@@ -91,8 +92,10 @@ class FilterCategory(PropertyGroup):
 
 class Link(PropertyGroup):
     name: StringProperty(name="Name")
-    collection_name: StringProperty(name="Collection Name")
+    collection: PointerProperty(name="Collection", type=bpy.types.Collection)
     is_loaded: BoolProperty(name="Is Loaded", default=False)
+    is_wireframe: BoolProperty(name="Is Wireframe", default=False)
+    is_hidden: BoolProperty(name="Is Hidden", default=False)
 
 
 class BIMProjectProperties(PropertyGroup):

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

@@ -302,8 +302,22 @@ class BIM_UL_links(UIList):
             row = layout.row(align=True)
             if item.is_loaded:
                 row.label(text=item.name)
-                op = row.operator("bim.toggle_link_visibility", text="", icon="HIDE_OFF")
-                op.collection_name = item.collection_name
+                op = row.operator(
+                    "bim.toggle_link_visibility",
+                    text="",
+                    icon="CUBE" if item.is_wireframe else "MESH_CUBE",
+                    emboss=False,
+                )
+                op.link = item.name
+                op.mode = "WIREFRAME"
+                op = row.operator(
+                    "bim.toggle_link_visibility",
+                    text="",
+                    icon="HIDE_ON" if item.is_hidden else "HIDE_OFF",
+                    emboss=False,
+                )
+                op.link = item.name
+                op.mode = "VISIBLE"
                 op = row.operator("bim.unload_link", text="", icon="UNLINKED")
                 op.filepath = item.name
             else:

src/blenderbim/blenderbim/tool/project.py

@@ -102,7 +102,7 @@ class Project(blenderbim.core.tool.Project):
 
         while queue:
             layer = queue.pop()
-            if layer.name == collection.name:
+            if layer.collection == collection:
                 layer_collection = layer
                 break
             queue.extend(list(layer.children))