1 files changed, 78 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/armature_selection.cc b/source/blender/blenkernel/intern/armature_selection.cc
new file mode 100644
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+++ b/source/blender/blenkernel/intern/armature_selection.cc
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+/*
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup bke
+ */
+
+#include "BKE_armature.hh"
+
+#include "BLI_listbase.h"
+
+#include "DNA_action_types.h"
+#include "DNA_armature_types.h"
+
+namespace blender::bke {
+
+namespace {
+
+void find_selected_bones__visit_bone(const bArmature *armature,
+                                     SelectedBoneCallback callback,
+                                     SelectedBonesResult &result,
+                                     Bone *bone)
+{
+  const bool is_selected = PBONE_SELECTED(armature, bone);
+  result.all_bones_selected &= is_selected;
+  result.no_bones_selected &= !is_selected;
+
+  if (is_selected) {
+    callback(bone);
+  }
+
+  LISTBASE_FOREACH (Bone *, child_bone, &bone->childbase) {
+    find_selected_bones__visit_bone(armature, callback, result, child_bone);
+  }
+}
+}  // namespace
+
+SelectedBonesResult BKE_armature_find_selected_bones(const bArmature *armature,
+                                                     SelectedBoneCallback callback)
+{
+  SelectedBonesResult result;
+  LISTBASE_FOREACH (Bone *, root_bone, &armature->bonebase) {
+    find_selected_bones__visit_bone(armature, callback, result, root_bone);
+  }
+
+  return result;
+}
+
+BoneNameSet BKE_armature_find_selected_bone_names(const bArmature *armature)
+{
+  BoneNameSet selected_bone_names;
+
+  /* Iterate over the selected bones to fill the set of bone names. */
+  auto callback = [&](Bone *bone) { selected_bone_names.add(bone->name); };
+  SelectedBonesResult result = BKE_armature_find_selected_bones(armature, callback);
+
+  /* If no bones are selected, act as if all are. */
+  if (result.all_bones_selected || result.no_bones_selected) {
+    return BoneNameSet();
+  }
+
+  return selected_bone_names;
+}
+
+}  // namespace blender::bke