RNA: include base types in RNA_struct_type_find_property search

Add RNA_struct_type_find_property_no_base for use in the rare situations
when this isn't desired.

Resolves T90617, where sequence strip sub-types weren't detecting
properties that exist in the base "Sequence" types.

3 files changed, 19 insertions, 3 deletions

diff --git a/source/blender/makesrna/RNA_access.h b/source/blender/makesrna/RNA_access.h
index 1eeb68c3a23..f206bde4705 100644
--- a/source/blender/makesrna/RNA_access.h
+++ b/source/blender/makesrna/RNA_access.h
@@ -828,6 +828,7 @@ unsigned int RNA_struct_count_properties(StructRNA *srna);
 
 /* lower level functions for access to type properties */
 const struct ListBase *RNA_struct_type_properties(StructRNA *srna);
+PropertyRNA *RNA_struct_type_find_property_no_base(StructRNA *srna, const char *identifier);
 PropertyRNA *RNA_struct_type_find_property(StructRNA *srna, const char *identifier);
 
 FunctionRNA *RNA_struct_find_function(StructRNA *srna, const char *identifier);
diff --git a/source/blender/makesrna/intern/rna_access.c b/source/blender/makesrna/intern/rna_access.c
index a795d78a058..216e58a9c52 100644
--- a/source/blender/makesrna/intern/rna_access.c
+++ b/source/blender/makesrna/intern/rna_access.c
@@ -967,11 +967,26 @@ const struct ListBase *RNA_struct_type_properties(StructRNA *srna)
   return &srna->cont.properties;
 }
 
-PropertyRNA *RNA_struct_type_find_property(StructRNA *srna, const char *identifier)
+PropertyRNA *RNA_struct_type_find_property_no_base(StructRNA *srna, const char *identifier)
 {
   return BLI_findstring_ptr(&srna->cont.properties, identifier, offsetof(PropertyRNA, identifier));
 }
 
+/**
+ * \note #RNA_struct_find_property is a higher level alternative to this function
+ * which takes a #PointerRNA instead of a #StructRNA.
+ */
+PropertyRNA *RNA_struct_type_find_property(StructRNA *srna, const char *identifier)
+{
+  for (; srna; srna = srna->base) {
+    PropertyRNA *prop = RNA_struct_type_find_property_no_base(srna, identifier);
+    if (prop != NULL) {
+      return prop;
+    }
+  }
+  return NULL;
+}
+
 FunctionRNA *RNA_struct_find_function(StructRNA *srna, const char *identifier)
 {
 #if 1
diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c
index 6dd96f66cec..ac1a7f68885 100644
--- a/source/blender/python/intern/bpy_rna.c
+++ b/source/blender/python/intern/bpy_rna.c
@@ -4475,7 +4475,7 @@ static PyObject *pyrna_struct_meta_idprop_getattro(PyObject *cls, PyObject *attr
   if ((ret == NULL)  /* || BPy_PropDeferred_CheckTypeExact(ret) */ ) {
     StructRNA *srna = srna_from_self(cls, "StructRNA.__getattr__");
     if (srna) {
-      PropertyRNA *prop = RNA_struct_type_find_property(srna, PyUnicode_AsUTF8(attr));
+      PropertyRNA *prop = RNA_struct_type_find_property_no_base(srna, PyUnicode_AsUTF8(attr));
       if (prop) {
         PointerRNA tptr;
         PyErr_Clear(); /* Clear error from tp_getattro. */
@@ -4497,7 +4497,7 @@ static int pyrna_struct_meta_idprop_setattro(PyObject *cls, PyObject *attr, PyOb
   const char *attr_str = PyUnicode_AsUTF8(attr);
 
   if (srna && !pyrna_write_check() &&
-      (is_deferred_prop || RNA_struct_type_find_property(srna, attr_str))) {
+      (is_deferred_prop || RNA_struct_type_find_property_no_base(srna, attr_str))) {
     PyErr_Format(PyExc_AttributeError,
                  "pyrna_struct_meta_idprop_setattro() "
                  "can't set in readonly state '%.200s.%S'",