Child Of Clear Inverse poll to check parent inverse in set

Since they are multiple uses for parent clear operator, It checks parent inverse only when it's called from Relations section from Object properties. It's passing object as context attribute `object_check_parent_inverse` so that poll check will occur only in this case and won't interrupt other workflows.

@@ -1832,0 +1833,4 @@
+{
+  for (int row = 0; row < 4; row++) {
+    for (int col = 0; col < 4; col++) {
+      if (m[row][col] != ((row == col) ? 1.0f : 0.0f))

@@ -1020,1 +1020,4 @@
 
+static bool childof_clear_inverse_poll(bContext *C)
+{
+  if (!edit_constraint_liboverride_allowed_poll(C))

@@ -1021,0 +1025,4 @@
+
+  PointerRNA ptr = CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
+  bConstraint *con = static_cast<bConstraint *>(ptr.data);
+  if (con == nullptr)

@@ -1278,1 +1301,4 @@
 
+static bool objectsolver_clear_inverse_poll(bContext *C)
+{
+  if (!edit_constraint_poll(C))

@@ -1279,0 +1306,4 @@
+
+  PointerRNA ptr = CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
+  bConstraint *con = static_cast<bConstraint *>(ptr.data);
+  if (con == nullptr)

@@ -411,10 +454,54 @@ class OBJECT_PT_custom_props(ObjectButtonsPanel, PropertyPanel, Panel):
     _property_type = bpy.types.Object
 
 
+class TransformAttributes(PropertyGroup):

@@ -414,0 +458,4 @@
+    def set_read_only_prop(self, value):
+        pass
+
+    def get_matrix_components(self) -> Tuple[Vector, Quaternion, Vector]:

@@ -414,0 +462,4 @@
+        return self.id_data.matrix_parent_inverse.decompose()
+
+    def get_location(self):
+        return self.get_matrix_components()[0]

@@ -414,0 +470,4 @@
+    def get_scale(self):
+        return self.get_matrix_components()[2]
+
+    # we implement only euler rotation as it should cover most of the cases

@@ -414,0 +481,4 @@
+    )
+
+    location: FloatVectorProperty(
+        name="Location", get=get_location, set=set_read_only_prop, options=set(), subtype="TRANSLATION", precision=5

@@ -429,2 +517,4 @@
 )
 
+def register_props():
+    bpy.types.Object.parent_inverse_transform = PointerProperty(type=TransformAttributes)

@@ -1021,0 +1027,4 @@
+  PointerRNA ptr = CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
+  bConstraint *con = static_cast<bConstraint *>(ptr.data);
+  if (con == nullptr) {
+    return true;

@@ -1021,0 +1032,4 @@
+
+  bChildOfConstraint *data = (bChildOfConstraint *)con->data;
+  if (data->tar == nullptr) {
+    CTX_wm_operator_poll_msg_set(C, "No target object set, so there is nothing to clear");

@@ -1279,0 +1310,4 @@
+  PointerRNA ptr = CTX_data_pointer_get_type(C, "constraint", &RNA_Constraint);
+  bConstraint *con = static_cast<bConstraint *>(ptr.data);
+  if (con == nullptr) {
+    return true;

@@ -1279,0 +1315,4 @@
+
+  bObjectSolverConstraint *data = (bObjectSolverConstraint *)con->data;
+  if (data->camera == nullptr) {
+    CTX_wm_operator_poll_msg_set(C, "No camera set, so there is nothing to clear");

@@ -110,0 +127,4 @@
+        inverse_matrix = ob.matrix_parent_inverse
+        inverse_props = ob.parent_inverse_transform
+
+        # we use 3x3 matrix because we don't care about translation-shear

@@ -110,0 +136,4 @@
+        layout.prop(inverse_props, "rotation_euler", text="Rotation")
+        layout.prop(inverse_props, "scale")
+
+        op = layout.operator("object.parent_clear", text="Clear Parent Inverse Transform")

@@ -414,0 +447,4 @@
+class ReadOnlyMatrixDecomposition(PropertyGroup):
+    """An utility property group for bpy.types.Object
+    for accessing read-only parent inverse matrix decomposition properties,
+    such as location, rotation and scale."""

@@ -414,0 +448,4 @@
+    """An utility property group for bpy.types.Object
+    for accessing read-only parent inverse matrix decomposition properties,
+    such as location, rotation and scale."""
+    def _get_matrix(self) -> Matrix:

@@ -430,1 +508,4 @@
 
+def register_props():
+    # Property is used to present parent inverse matrix in UI as it's decomposed properties.
+    bpy.types.Object.parent_inverse_transform = PointerProperty(type=ReadOnlyMatrixDecomposition)

@@ -1832,0 +1833,4 @@
+{
+  for (int row = 0; row < 4; row++) {
+    for (int col = 0; col < 4; col++) {
+      if (m[row][col] != ((row == col) ? 1.0f : 0.0f)) {

@@ -414,0 +479,4 @@
+        get=_get_rotation_euler,
+        set=None,
+        subtype="EULER",
+        precision=5,