Python/RNA: added collection.move(from, to) for python defined

collection properties.

2 files changed, 29 insertions, 0 deletions

diff --git a/source/blender/makesrna/RNA_access.h b/source/blender/makesrna/RNA_access.h
index 89dd6a5c3e6..ae431beb1fe 100644
--- a/source/blender/makesrna/RNA_access.h
+++ b/source/blender/makesrna/RNA_access.h
@@ -742,6 +742,7 @@ void RNA_property_pointer_remove(PointerRNA *ptr, PropertyRNA *prop);
 void RNA_property_collection_add(PointerRNA *ptr, PropertyRNA *prop, PointerRNA *r_ptr);
 int RNA_property_collection_remove(PointerRNA *ptr, PropertyRNA *prop, int key);
 void RNA_property_collection_clear(PointerRNA *ptr, PropertyRNA *prop);
+int RNA_property_collection_move(PointerRNA *ptr, PropertyRNA *prop, int key, int pos);
 
 /* copy/reset */
 int RNA_property_copy(PointerRNA *ptr, PointerRNA *fromptr, PropertyRNA *prop, int index);
diff --git a/source/blender/makesrna/intern/rna_access.c b/source/blender/makesrna/intern/rna_access.c
index 4cc5ca6f9df..6bd99793933 100644
--- a/source/blender/makesrna/intern/rna_access.c
+++ b/source/blender/makesrna/intern/rna_access.c
@@ -2172,6 +2172,34 @@ int RNA_property_collection_remove(PointerRNA *ptr, PropertyRNA *prop, int key)
 	return 0;
 }
 
+int RNA_property_collection_move(PointerRNA *ptr, PropertyRNA *prop, int key, int pos)
+{
+	IDProperty *idprop;
+
+	if((idprop=rna_idproperty_check(&prop, ptr))) {
+		IDProperty tmp, *array;
+		int len;
+
+		len= idprop->len;
+		array= IDP_IDPArray(idprop);
+
+		if(key >= 0 && key < len && pos >= 0 && pos < len && key != pos) {
+			memcpy(&tmp, &array[key], sizeof(IDProperty));
+			if(pos < key)
+				memmove(array+pos+1, array+pos, sizeof(IDProperty)*(key - pos));
+			else
+				memmove(array+key, array+key+1, sizeof(IDProperty)*(pos - key));
+			memcpy(&array[pos], &tmp, sizeof(IDProperty));
+		}
+
+		return 1;
+	}
+	else if(prop->flag & PROP_IDPROPERTY)
+		return 1;
+
+	return 0;
+}
+
 void RNA_property_collection_clear(PointerRNA *ptr, PropertyRNA *prop)
 {
 	IDProperty *idprop;