RNA & interface functions for checking if RNA in a button uses valid rna property (not currently used).

2 files changed, 12 insertions, 0 deletions

diff --git a/source/blender/editors/interface/interface.c b/source/blender/editors/interface/interface.c
index 1fd4b376aff..00b2d922ffc 100644
--- a/source/blender/editors/interface/interface.c
+++ b/source/blender/editors/interface/interface.c
@@ -1211,6 +1211,17 @@ int ui_is_but_unit(uiBut *but)
 	return 1;
 }
 
+int ui_is_but_rna_valid(uiBut *but)
+{
+	if (but->rnaprop==NULL || RNA_struct_contains_property(&but->rnapoin, but->rnaprop)) {
+		return TRUE;
+	}
+	else {
+		printf("property removed %s: %p\n", but->drawstr, but->rnaprop);
+		return FALSE;
+	}
+}
+
 double ui_get_but_val(uiBut *but)
 {
 	PropertyRNA *prop;
diff --git a/source/blender/editors/interface/interface_intern.h b/source/blender/editors/interface/interface_intern.h
index a2b876f0412..6cca689d115 100644
--- a/source/blender/editors/interface/interface_intern.h
+++ b/source/blender/editors/interface/interface_intern.h
@@ -376,6 +376,7 @@ extern void ui_set_but_soft_range(uiBut *but, double value);
 extern void ui_check_but(uiBut *but);
 extern int  ui_is_but_float(uiBut *but);
 extern int  ui_is_but_unit(uiBut *but);
+extern int  ui_is_but_rna_valid(uiBut *but);
 
 extern void ui_bounds_block(uiBlock *block);
 extern void ui_block_translate(uiBlock *block, int x, int y);