AttributeDefs: Fix crashing multivalue of files widget

openpype/widgets/attribute_defs/files_widget.py

@@ -283,6 +283,15 @@ def add_filepaths(self, items):
  if not items:
  return
 
+ if self._multivalue:
+ _items = []
+ for item in items:
+ if isinstance(item, (tuple, list, set)):
+ _items.extend(item)
+ else:
+ _items.append(item)
+ items = _items
+
  file_items = FileDefItem.from_value(items, self._allow_sequences)
  if not file_items:
  return
@@ -615,6 +624,7 @@ def __init__(self, *args, **kwargs):
  self.customContextMenuRequested.connect(self._on_context_menu_request)
 
  self._remove_btn = remove_btn
+ self._multivalue = False
 
  def setSelectionModel(self, *args, **kwargs):
  """Catch selection model set to register signal callback.
@@ -629,12 +639,13 @@ def setSelectionModel(self, *args, **kwargs):
  def set_multivalue(self, multivalue):
  """Disable remove button on multivalue."""
 
+ self._multivalue = multivalue
  self._remove_btn.setVisible(not multivalue)
 
  def update_remove_btn_visibility(self):
  model = self.model()
  visible = False
- if model:
+ if not self._multivalue and model:
  visible = model.rowCount() > 0
  self._remove_btn.setVisible(visible)
 
@@ -749,12 +760,13 @@ def __init__(self, single_item, allow_sequences, extensions_label, parent):
  self._layout = layout
 
  def _set_multivalue(self, multivalue):
- if self._multivalue == multivalue:
+ if self._multivalue is multivalue:
  return
  self._multivalue = multivalue
  self._files_view.set_multivalue(multivalue)
  self._files_model.set_multivalue(multivalue)
  self._files_proxy_model.set_multivalue(multivalue)
+ self.setEnabled(not multivalue)
 
  def set_value(self, value, multivalue):
  self._in_set_value = True