Cascade connection cleanup on element delete

Deleting a slab that was connected to a wall via IfcRelConnectsElements(TOP)
left the wall holding orphan IfcBooleanResult items + a stale BBIM_Boolean
pset. The disconnect operator already runs the right cleanup; element delete
just never invoked it.

Extract the per-kind cleanup into core.connection.disconnect_rel so the
operator (bim.disconnect_elements) and a new cascade in
tool.Geometry.delete_ifc_object share one dispatch table. Adding a future
rel kind to tool.Connection.find_rels now flows into both call sites
automatically; an AST forward-compat guard enforces coverage.

Other adjustments:
- regenerate_wall_to_underside zero-slab branch now removes stale clip
  booleans instead of silently skipping, so disconnecting the last TOP
  slab also reverts the wall correctly.
- duplicate_ifc_objects (Shift+D) calls strip_underside_booleans on copied
  walls so the duplicate doesn't carry over the source's slab trim, then
  reloads the body representation when something was stripped so the
  viewport reflects the change without waiting on Shift+G.
- batch_being_deleted_ids threads through OverrideDelete so the cascade
  can suppress partner-side regenerate when both endpoints are queued for
  deletion in the same batch.

This file was generated with the assistance of an AI coding tool.
This commit is contained in:
Gorgious56
2026-06-12 11:11:07 +02:00
parent c7d5d6c498
commit bb8681a954
11 changed files with 742 additions and 32 deletions
@@ -121,6 +121,52 @@ def test_find_rels_dedups_by_id():
assert len(rels) == 1
# ---------------------------------------------------------------------------
# tool.Connection.find_rels_for_element — single-element entry point
# ---------------------------------------------------------------------------
def test_find_rels_for_element_returns_kind_and_partner_per_rel():
"""Cascade-on-delete needs every rel touching one element plus the partner
element on the other side of each rel — that's the cleanup target."""
elem = _elem()
partner_a = _elem()
partner_b = _elem()
rel_path = _rel("IfcRelConnectsPathElements", related=partner_a, rel_id=1)
rel_top = _rel("IfcRelConnectsElements", relating=partner_b, description="TOP", rel_id=2)
elem.ConnectedTo = [rel_path]
elem.ConnectedFrom = [rel_top]
result = tool.Connection.find_rels_for_element(elem)
assert (rel_path, "path", partner_a) in result
assert (rel_top, "element-top", partner_b) in result
assert len(result) == 2
def test_find_rels_for_element_dedups_by_rel_id():
elem = _elem()
partner = _elem()
rel = _rel("IfcRelConnectsPathElements", related=partner, relating=partner, rel_id=1)
elem.ConnectedTo = [rel]
elem.ConnectedFrom = [rel]
result = tool.Connection.find_rels_for_element(elem)
assert len(result) == 1
def test_find_rels_for_element_skips_rels_without_partner():
"""Defensive: a malformed rel missing the opposite-side attribute should not
crash — record nothing for it rather than emit a (rel, kind, None) triple
that would later trip a None-deref in the dispatch."""
elem = _elem()
bad = _rel("IfcRelConnectsPathElements", related=None, rel_id=1)
elem.ConnectedTo = [bad]
assert tool.Connection.find_rels_for_element(elem) == []
# ---------------------------------------------------------------------------
# tool.Connection.find_rel — first-match convenience
# ---------------------------------------------------------------------------
@@ -165,15 +211,16 @@ def _make_op(*, a_guid="A", b_guid="B"):
return op
def test_disconnect_path_removes_all_rels_then_recreates_walls():
def test_disconnect_dispatches_one_call_per_rel():
"""Operator forwards every rel returned by find_rels to disconnect_rel,
in order — the operator is a thin wrapper; per-kind cleanup logic lives
in core.connection.disconnect_rel and is tested separately."""
from bonsai.bim.module.model.wall import DisconnectElements
elem_a = Mock()
elem_b = Mock()
rel1 = Mock()
rel2 = Mock()
obj_a = Mock()
obj_b = Mock()
ifc_file = MagicMock()
ifc_file.by_guid.side_effect = lambda g: {"A": elem_a, "B": elem_b}[g]
@@ -181,45 +228,114 @@ def test_disconnect_path_removes_all_rels_then_recreates_walls():
with patch("bonsai.bim.module.model.wall.tool.Ifc.get", return_value=ifc_file), patch(
"bonsai.bim.module.model.wall.tool.Connection.find_rels",
return_value=[(rel1, "path"), (rel2, "path")],
), patch(
"bonsai.bim.module.model.wall.tool.Ifc.get_object", side_effect=lambda e: {elem_a: obj_a, elem_b: obj_b}[e]
), patch("bonsai.bim.module.model.wall.bonsai.core.geometry.remove_connection") as remove, patch(
"bonsai.bim.module.model.wall.tool.Model.recreate_wall"
) as recreate, patch("bonsai.bim.module.model.wall._resync_walls_after_mutation") as resync:
return_value=[(rel1, "path"), (rel2, "element-top")],
), patch("bonsai.bim.module.model.wall.bonsai.core.connection.disconnect_rel") as dispatch, patch(
"bonsai.bim.module.model.wall.tool.Ifc.get_object", return_value=Mock()
), patch("bonsai.bim.module.model.wall._resync_walls_after_mutation"):
DisconnectElements._perform(op, context=MagicMock())
assert remove.call_count == 2
assert recreate.call_count == 2
resync.assert_called_once_with([obj_a, obj_b])
assert dispatch.call_count == 2
# Both rels dispatch with elem=elem_a, partner=elem_b regardless of orientation
# — orient_element_top inside disconnect_rel recovers the wall/slab roles.
for call, expected_rel, expected_kind in zip(
dispatch.call_args_list, [rel1, rel2], ["path", "element-top"]
):
kw = call.kwargs
assert kw["rel"] is expected_rel
assert kw["kind"] == expected_kind
assert kw["elem"] is elem_a
assert kw["partner"] is elem_b
op.report.assert_not_called()
def test_disconnect_element_top_calls_regenerate():
def test_disconnect_resyncs_path_objs_once_for_path_kind():
"""For path rels the operator collects both endpoint objects and resyncs
drafts once at the end — a Blender-side concern that doesn't belong in
the core dispatch."""
from bonsai.bim.module.model.wall import DisconnectElements
wall = Mock()
slab = Mock()
wall_obj = Mock()
elem_a = Mock()
elem_b = Mock()
obj_a = Mock()
obj_b = Mock()
rel = Mock()
rel.RelatedElement = wall
ifc_file = MagicMock()
ifc_file.by_guid.side_effect = lambda g: {"A": wall, "B": slab}[g]
ifc_file.by_guid.side_effect = lambda g: {"A": elem_a, "B": elem_b}[g]
op = _make_op()
with patch("bonsai.bim.module.model.wall.tool.Ifc.get", return_value=ifc_file), patch(
"bonsai.bim.module.model.wall.tool.Connection.find_rels", return_value=[(rel, "path")]
), patch(
"bonsai.bim.module.model.wall.tool.Ifc.get_object",
side_effect=lambda e: {elem_a: obj_a, elem_b: obj_b}[e],
), patch("bonsai.bim.module.model.wall.bonsai.core.connection.disconnect_rel"), patch(
"bonsai.bim.module.model.wall._resync_walls_after_mutation"
) as resync:
DisconnectElements._perform(op, context=MagicMock())
resync.assert_called_once_with([obj_a, obj_b])
def test_disconnect_skips_resync_for_non_path_kind():
"""element-top / element kinds don't need wall-draft resync — that's a
path-specific concern (DumbWallJoiner geometry refresh)."""
from bonsai.bim.module.model.wall import DisconnectElements
elem_a = Mock()
elem_b = Mock()
rel = Mock()
ifc_file = MagicMock()
ifc_file.by_guid.side_effect = lambda g: {"A": elem_a, "B": elem_b}[g]
op = _make_op()
with patch("bonsai.bim.module.model.wall.tool.Ifc.get", return_value=ifc_file), patch(
"bonsai.bim.module.model.wall.tool.Connection.find_rels", return_value=[(rel, "element-top")]
), patch(
"bonsai.bim.module.model.wall.tool.Connection.orient_element_top", return_value=(wall, slab)
), patch("bonsai.bim.module.model.wall.tool.Ifc.get_object", return_value=wall_obj), patch(
"bonsai.bim.module.model.wall.ifcopenshell.api.geometry.disconnect_element"
) as disc, patch("bonsai.bim.module.model.wall.core.regenerate_wall_to_underside") as regen:
), patch("bonsai.bim.module.model.wall.tool.Ifc.get_object", return_value=Mock()), patch(
"bonsai.bim.module.model.wall.bonsai.core.connection.disconnect_rel"
), patch("bonsai.bim.module.model.wall._resync_walls_after_mutation") as resync:
DisconnectElements._perform(op, context=MagicMock())
disc.assert_called_once_with(ifc_file, relating_element=slab, related_element=wall)
regen.assert_called_once()
op.report.assert_not_called()
resync.assert_not_called()
def test_disconnect_gizmo_direction_symmetry():
"""The wall-selected gizmo dispatches with element_a=wall, element_b=slab.
The slab-selected gizmo dispatches with element_a=slab, element_b=wall.
Both routes hit disconnect_rel with the same (rel, kind) pair — orientation
recovery happens inside the dispatch, not at the operator layer."""
from bonsai.bim.module.model.wall import DisconnectElements
wall = Mock(name="wall")
slab = Mock(name="slab")
rel = Mock()
ifc_file = MagicMock()
op = _make_op()
def _run_with_guids(a, b):
ifc_file.by_guid.side_effect = lambda g: {a: wall if a == "WALL" else slab, b: slab if b == "SLAB" else wall}[g]
op.element_a_guid = a
op.element_b_guid = b
with patch("bonsai.bim.module.model.wall.tool.Ifc.get", return_value=ifc_file), patch(
"bonsai.bim.module.model.wall.tool.Connection.find_rels", return_value=[(rel, "element-top")]
), patch("bonsai.bim.module.model.wall.tool.Ifc.get_object", return_value=Mock()), patch(
"bonsai.bim.module.model.wall.bonsai.core.connection.disconnect_rel"
) as dispatch, patch("bonsai.bim.module.model.wall._resync_walls_after_mutation"):
DisconnectElements._perform(op, context=MagicMock())
return dispatch.call_args.kwargs
wall_first = _run_with_guids("WALL", "SLAB")
slab_first = _run_with_guids("SLAB", "WALL")
# disconnect_rel sees (rel, "element-top") in both runs; elem/partner swap
# by argument order but orient_element_top inside disconnect_rel resolves
# the wall/slab roles symmetrically.
assert wall_first["rel"] is rel and slab_first["rel"] is rel
assert wall_first["kind"] == slab_first["kind"] == "element-top"
assert {wall_first["elem"], wall_first["partner"]} == {wall, slab}
assert {slab_first["elem"], slab_first["partner"]} == {wall, slab}
def test_disconnect_reports_on_unknown_guids():
+7
View File
@@ -60,6 +60,13 @@ def collector():
prophet.verify()
@pytest.fixture
def connection():
prophet = Prophecy(bonsai.core.tool.Connection)
yield prophet
prophet.verify()
@pytest.fixture
def context():
prophet = Prophecy(bonsai.core.tool.Context)
+218
View File
@@ -0,0 +1,218 @@
# Bonsai - OpenBIM Blender Add-on
# Copyright (C) 2026
#
# This file is part of Bonsai.
#
# Bonsai is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Bonsai is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Bonsai. If not, see <http://www.gnu.org/licenses/>.
#
# This file was generated with the assistance of an AI coding tool.
"""Dispatch tests for ``core.connection.disconnect_rel``.
The dispatch is the single source of truth for per-kind cleanup shared by the
explicit ``bim.disconnect_elements`` operator and the implicit cascade in
``tool.Geometry.delete_ifc_object``. Each kind has one test that pins which
helpers must be called; the AST forward-compat guard in
``test_connection_forward_compat.py`` then asserts the dispatch table covers
every kind ``Connection.find_rels`` can emit.
Uses ``unittest.mock`` directly (rather than the Prophecy fixtures) because
the dispatch passes IFC rel entities with attribute access (``rel.RelatingElement``)
that Prophecy's JSON call recorder can't serialize.
"""
from types import SimpleNamespace
from unittest.mock import Mock, patch
import pytest
import bonsai.core.connection as subject
def _rel(relating="slab", related="wall"):
return SimpleNamespace(RelatingElement=relating, RelatedElement=related)
def _ifc_with_objects(mapping):
ifc = Mock()
ifc.get_object.side_effect = lambda e: mapping.get(e)
ifc.run = Mock()
return ifc
class TestDisconnectRelPath:
def test_removes_connection_and_recreates_both_walls(self):
ifc = _ifc_with_objects({"elem_a": "obj_a", "elem_b": "obj_b"})
geometry = Mock()
model = Mock()
connection = Mock()
with patch("bonsai.core.connection.bonsai.core.geometry.remove_connection") as remove:
subject.disconnect_rel(
ifc, geometry, model, connection,
rel="rel", kind="path", elem="elem_a", partner="elem_b",
)
remove.assert_called_once_with(geometry, connection="rel")
model.recreate_wall.assert_any_call("elem_a", "obj_a")
model.recreate_wall.assert_any_call("elem_b", "obj_b")
assert model.recreate_wall.call_count == 2
def test_skip_elem_recreate_suppresses_elem_side(self):
"""Cascade case: elem is being deleted — don't recreate it."""
ifc = _ifc_with_objects({"elem": "elem_obj", "partner": "partner_obj"})
geometry = Mock()
model = Mock()
connection = Mock()
with patch("bonsai.core.connection.bonsai.core.geometry.remove_connection"):
subject.disconnect_rel(
ifc, geometry, model, connection,
rel="rel", kind="path", elem="elem", partner="partner",
skip_elem_recreate=True,
)
model.recreate_wall.assert_called_once_with("partner", "partner_obj")
def test_skip_partner_recreate_suppresses_partner_side(self):
ifc = _ifc_with_objects({"elem": "elem_obj", "partner": "partner_obj"})
geometry = Mock()
model = Mock()
connection = Mock()
with patch("bonsai.core.connection.bonsai.core.geometry.remove_connection"):
subject.disconnect_rel(
ifc, geometry, model, connection,
rel="rel", kind="path", elem="elem", partner="partner",
skip_partner_recreate=True,
)
model.recreate_wall.assert_called_once_with("elem", "elem_obj")
def test_both_skips_means_only_remove_rel(self):
ifc = _ifc_with_objects({})
geometry = Mock()
model = Mock()
connection = Mock()
with patch("bonsai.core.connection.bonsai.core.geometry.remove_connection") as remove:
subject.disconnect_rel(
ifc, geometry, model, connection,
rel="rel", kind="path", elem="elem", partner="partner",
skip_elem_recreate=True,
skip_partner_recreate=True,
)
remove.assert_called_once()
model.recreate_wall.assert_not_called()
class TestDisconnectRelElementTop:
def test_disconnects_then_regenerates_wall(self):
"""Operator case (no skip flags): both sides survive, so the wall gets
re-clipped against currently-connected slabs."""
rel = _rel()
ifc = _ifc_with_objects({"wall": "wall_obj"})
geometry = Mock()
model = Mock()
connection = Mock()
connection.orient_element_top.return_value = ("wall", "slab")
with patch("bonsai.core.connection.regenerate_wall_to_underside") as regen:
subject.disconnect_rel(
ifc, geometry, model, connection,
rel=rel, kind="element-top", elem="elem", partner="partner",
)
ifc.run.assert_called_once_with(
"geometry.disconnect_element", relating_element="slab", related_element="wall"
)
regen.assert_called_once_with(ifc, geometry, model, ["wall_obj"])
def test_slab_delete_cascade_still_regenerates_wall(self):
"""When slab is being deleted (elem=slab), wall survives and must
re-clip against remaining connections — the cascade's main purpose."""
rel = _rel()
ifc = _ifc_with_objects({"wall": "wall_obj"})
connection = Mock()
connection.orient_element_top.return_value = ("wall", "slab")
with patch("bonsai.core.connection.regenerate_wall_to_underside") as regen:
subject.disconnect_rel(
ifc, Mock(), Mock(), connection,
rel=rel, kind="element-top", elem="slab", partner="wall",
skip_elem_recreate=True, # slab is being deleted
)
regen.assert_called_once()
def test_wall_delete_cascade_skips_wall_regen(self):
"""When the wall itself is being deleted, regenerating its body moments
before remove_product wipes it is wasted work — skip."""
rel = _rel()
ifc = _ifc_with_objects({"wall": "wall_obj"})
connection = Mock()
connection.orient_element_top.return_value = ("wall", "slab")
with patch("bonsai.core.connection.regenerate_wall_to_underside") as regen:
subject.disconnect_rel(
ifc, Mock(), Mock(), connection,
rel=rel, kind="element-top", elem="wall", partner="slab",
skip_elem_recreate=True, # wall is being deleted
)
regen.assert_not_called()
ifc.run.assert_called_once() # rel still removed
def test_both_in_batch_skips_wall_regen(self):
"""Batch delete of both endpoints, processing slab first: partner (wall)
also queued for deletion → skip wall regen."""
rel = _rel()
ifc = _ifc_with_objects({"wall": "wall_obj"})
connection = Mock()
connection.orient_element_top.return_value = ("wall", "slab")
with patch("bonsai.core.connection.regenerate_wall_to_underside") as regen:
subject.disconnect_rel(
ifc, Mock(), Mock(), connection,
rel=rel, kind="element-top", elem="slab", partner="wall",
skip_elem_recreate=True,
skip_partner_recreate=True, # wall also in batch
)
regen.assert_not_called()
class TestDisconnectRelElement:
def test_just_removes_the_rel(self):
rel = _rel(relating="A", related="B")
ifc = Mock()
subject.disconnect_rel(
ifc, Mock(), Mock(), Mock(),
rel=rel, kind="element", elem="elem_a", partner="elem_b",
)
ifc.run.assert_called_once_with(
"geometry.disconnect_element", relating_element="A", related_element="B"
)
class TestDisconnectRelUnknownKind:
def test_raises_value_error(self):
with pytest.raises(ValueError, match="Unknown rel kind"):
subject.disconnect_rel(
Mock(), Mock(), Mock(), Mock(),
rel="rel", kind="bogus", elem="a", partner="b",
)
@@ -0,0 +1,123 @@
# Bonsai - OpenBIM Blender Add-on
# Copyright (C) 2026
#
# This file is part of Bonsai.
#
# Bonsai is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Bonsai is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Bonsai. If not, see <http://www.gnu.org/licenses/>.
#
# This file was generated with the assistance of an AI coding tool.
"""Forward-compat AST contract: ``core.connection.disconnect_rel`` must have a
branch for every rel ``kind`` emitted by ``tool.connection.Connection`` lookups.
Adding a new rel kind (e.g. ``"void"``, ``"fill"``, ``"interferes"``) to
``find_rels`` / ``find_rels_for_element`` without extending ``disconnect_rel``
would silently regress the disconnect operator and the cascade-on-delete: a new
kind would reach the dispatch, hit the ``raise ValueError("Unknown rel kind")``
fallback, and either crash the operator or leave the cascade half-done. This
guard makes the symmetry mandatory at test time."""
import ast
from pathlib import Path
import pytest
pytestmark = pytest.mark.model
BONSAI_ROOT = Path(__file__).parent.parent.parent / "bonsai"
TOOL_CONNECTION = BONSAI_ROOT / "tool" / "connection.py"
CORE_CONNECTION = BONSAI_ROOT / "core" / "connection.py"
def _find_function(tree: ast.Module, name: str) -> ast.FunctionDef:
for node in ast.walk(tree):
if isinstance(node, ast.FunctionDef) and node.name == name:
return node
raise AssertionError(f"Function {name!r} not found")
def _find_method(tree: ast.Module, class_name: str, method_name: str) -> ast.FunctionDef:
for node in ast.walk(tree):
if isinstance(node, ast.ClassDef) and node.name == class_name:
for child in node.body:
if isinstance(child, ast.FunctionDef) and child.name == method_name:
return child
raise AssertionError(f"Method {class_name}.{method_name} not found")
def _kinds_emitted_by(method: ast.FunctionDef) -> set[str]:
"""Extract every kind label this method emits.
Looks at exactly two narrow patterns to avoid false positives from
docstrings or type-annotation strings:
- ``_record(rel, "<kind>", …)`` — positional string at index 1, the
conventional emit shape in ``find_rels`` / ``find_rels_for_element``.
- ``kind = "<a>" if … else "<b>"`` and chained variants — string
literals on either branch of an ``ast.IfExp`` assigned to ``kind``.
"""
kinds: set[str] = set()
for node in ast.walk(method):
if isinstance(node, ast.Call):
func = node.func
if isinstance(func, ast.Name) and func.id == "_record" and len(node.args) >= 2:
arg = node.args[1]
if isinstance(arg, ast.Constant) and isinstance(arg.value, str):
kinds.add(arg.value)
elif isinstance(arg, ast.IfExp):
for branch in (arg.body, arg.orelse):
if isinstance(branch, ast.Constant) and isinstance(branch.value, str):
kinds.add(branch.value)
elif isinstance(node, ast.Assign):
targets = [t for t in node.targets if isinstance(t, ast.Name) and t.id == "kind"]
if not targets or not isinstance(node.value, ast.IfExp):
continue
for branch in (node.value.body, node.value.orelse):
if isinstance(branch, ast.Constant) and isinstance(branch.value, str):
kinds.add(branch.value)
return kinds
def _kind_branches_in_disconnect_rel(tree: ast.Module) -> set[str]:
"""Return every kind matched by ``disconnect_rel``'s ``kind == ""`` branches."""
fn = _find_function(tree, "disconnect_rel")
kinds: set[str] = set()
for node in ast.walk(fn):
if isinstance(node, ast.Compare) and len(node.ops) == 1 and isinstance(node.ops[0], ast.Eq):
left = node.left
right = node.comparators[0]
if isinstance(left, ast.Name) and left.id == "kind":
if isinstance(right, ast.Constant) and isinstance(right.value, str):
kinds.add(right.value)
return kinds
def test_disconnect_rel_handles_every_kind_emitted_by_connection_lookups() -> None:
tool_tree = ast.parse(TOOL_CONNECTION.read_text(encoding="utf-8"))
core_tree = ast.parse(CORE_CONNECTION.read_text(encoding="utf-8"))
emitted = _kinds_emitted_by(_find_method(tool_tree, "Connection", "find_rels")) | _kinds_emitted_by(
_find_method(tool_tree, "Connection", "find_rels_for_element")
)
handled = _kind_branches_in_disconnect_rel(core_tree)
assert emitted, "Sanity check: no kinds extracted — emit pattern may have changed"
missing = emitted - handled
assert not missing, (
f"core.connection.disconnect_rel is missing branches for kinds {missing}. "
f"Every kind returned by Connection.find_rels / find_rels_for_element "
f"must have a matching if/elif branch in the dispatch."
)