IfcDiff now uses the new selector syntax with the new UI

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

@@ -38,6 +38,7 @@ class DiffData:
         cls.data["total_deleted"] = cls.total_deleted()
         cls.data["total_changed"] = cls.total_changed()
         cls.data["changes"] = cls.changes()
+        cls.data["saved_searches"] = cls.saved_searches()
         cls.is_loaded = True
 
     @classmethod
@@ -84,3 +85,18 @@ class DiffData:
         elif element.GlobalId in diff["deleted"]:
             changes["Deleted"] = True
         return changes
+
+    @classmethod
+    def saved_searches(cls):
+        if not tool.Ifc.get():
+            return []
+        groups = tool.Ifc.get().by_type("IfcGroup")
+        results = []
+        for group in groups:
+            try:
+                data = json.loads(group.Description)
+                if isinstance(data, dict) and data.get("type", None) == "BBIM_Search" and data.get("query", None):
+                    results.append(group)
+            except:
+                pass
+        return [(str(g.id()), g.Name or "Unnamed", "") for g in sorted(results, key=lambda x: x.Name or "Unnamed")]

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

@@ -135,6 +135,7 @@ class ExecuteIfcDiff(bpy.types.Operator):
     bl_label = "Execute IFC Diff"
     filename_ext = ".json"
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    filter_glob: bpy.props.StringProperty(default="*.json", options={"HIDDEN"})
 
     def invoke(self, context, event):
         self.filepath = bpy.path.ensure_ext(bpy.data.filepath, ".json")
@@ -162,7 +163,7 @@ class ExecuteIfcDiff(bpy.types.Operator):
             new = ifcopenshell.open(self.props.new_file)
 
         relationships = [r.relationship for r in self.props.diff_relationships]
-        query = self.props.diff_filter_elements
+        query = tool.Search.export_filter_query(self.props.filter_groups) or None
 
         ifc_diff = ifcdiff.IfcDiff(old, new, relationships=relationships, filter_elements=query)
         ifc_diff.diff()

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

@@ -17,7 +17,7 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
-from blenderbim.bim.prop import StrProperty
+from blenderbim.bim.prop import StrProperty, BIMFilterGroup
 from blenderbim.bim.module.diff.data import DiffData
 from bpy.types import PropertyGroup
 from bpy.props import (
@@ -48,7 +48,7 @@ class DiffProperties(PropertyGroup):
     old_file: StringProperty(default="", name="Old IFC File")
     new_file: StringProperty(default="", name="New IFC File")
     diff_relationships: CollectionProperty(type=Relationships, name="Relationships")
-    diff_filter_elements: StringProperty(default="", name="Filter")
+    filter_groups: CollectionProperty(type=BIMFilterGroup, name="Filter Groups")
     should_load_changed_elements: BoolProperty(name="Load Changed Elements", default=True)
     active_file: EnumProperty(
         items=[

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

@@ -19,8 +19,8 @@
 from bpy.types import Panel
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.diff.data import DiffData
+import blenderbim.bim.helper
 import blenderbim.tool as tool
-import json
 
 
 class BIM_PT_diff(Panel):
@@ -93,8 +93,7 @@ class BIM_PT_diff(Panel):
             remove.collection = "diff_relationships"
             remove.index = index
 
-        row = layout.row(align=True)
-        row.prop(props, "diff_filter_elements")
+        blenderbim.bim.helper.draw_filter(self.layout, props.filter_groups, DiffData, "diff")
 
         row = layout.row()
         row.operator("bim.execute_ifc_diff")

src/blenderbim/blenderbim/tool/search.py

@@ -20,6 +20,8 @@ class Search(blenderbim.core.tool.Search):
             return bpy.context.scene.BIMSearchProperties.filter_groups
         elif module == "csv":
             return bpy.context.scene.CsvProperties.filter_groups
+        elif module == "diff":
+            return bpy.context.scene.DiffProperties.filter_groups
         elif module == "drawing_include":
             return bpy.context.active_object.data.BIMCameraProperties.include_filter_groups
         elif module == "drawing_exclude":

src/ifcdiff/ifcdiff.py

@@ -54,7 +54,7 @@ class IfcDiff:
         that comparisons will take longer.
     :type is_shallow: bool
     :param filter_elements: An IFC filter query if you only want to compare a
-        subset of elements. For example: ``.IfcWall`` to only compare walls.
+        subset of elements. For example: ``IfcWall`` to only compare walls.
     :type filter_elements: string
 
     Example::
@@ -83,9 +83,12 @@ class IfcDiff:
         self.precision = self.get_precision()
 
         if self.filter_elements:
-            selector = ifcopenshell.util.selector.Selector()
-            old_elements = set(e.GlobalId for e in selector.parse(self.old, self.filter_elements))
-            new_elements = set(e.GlobalId for e in selector.parse(self.new, self.filter_elements))
+            old_elements = set(
+                e.GlobalId for e in ifcopenshell.util.selector.filter_elements(self.old, self.filter_elements)
+            )
+            new_elements = set(
+                e.GlobalId for e in ifcopenshell.util.selector.filter_elements(self.new, self.filter_elements)
+            )
         else:
             old_elements = self.old.by_type("IfcElement")
             if self.old.schema == "IFC2X3":