Attribute Defs UI: Files widget show what is allowed to drop in

openpype/style/style.css

@@ -1418,3 +1418,6 @@ InViewButton, InViewButton:disabled {
 InViewButton:hover {
  background: rgba(255, 255, 255, 37);
 }
+SupportLabel {
+ color: {color:font-disabled};
+}

openpype/widgets/attribute_defs/files_widget.py

@@ -26,26 +26,110 @@
 EXT_ROLE = QtCore.Qt.UserRole + 8
 
 
+class SupportLabel(QtWidgets.QLabel):
+ pass
+
+
 class DropEmpty(QtWidgets.QWidget):
- _drop_enabled_text = "Drag & Drop\n(drop files here)"
+ _empty_extensions = "Any file"
 
- def __init__(self, parent):
+ def __init__(self, single_item, allow_sequences, parent):
  super(DropEmpty, self).__init__(parent)
- label_widget = QtWidgets.QLabel(self._drop_enabled_text, self)
- label_widget.setAlignment(QtCore.Qt.AlignCenter)
 
- label_widget.setAttribute(QtCore.Qt.WA_TranslucentBackground)
+ drop_label_widget = QtWidgets.QLabel("Drag & Drop files here", self)
 
- layout = QtWidgets.QHBoxLayout(self)
+ items_label_widget = SupportLabel(self)
+ items_label_widget.setWordWrap(True)
+
+ layout = QtWidgets.QVBoxLayout(self)
  layout.setContentsMargins(0, 0, 0, 0)
- layout.addSpacing(10)
+ layout.addSpacing(20)
+ layout.addWidget(
+ drop_label_widget, 0, alignment=QtCore.Qt.AlignCenter
+ )
+ layout.addSpacing(30)
+ layout.addStretch(1)
  layout.addWidget(
- label_widget,
- alignment=QtCore.Qt.AlignCenter
+ items_label_widget, 0, alignment=QtCore.Qt.AlignCenter
  )
  layout.addSpacing(10)
 
- self._label_widget = label_widget
+ for widget in (
+ drop_label_widget,
+ items_label_widget,
+ ):
+ widget.setAlignment(QtCore.Qt.AlignCenter)
+ widget.setAttribute(QtCore.Qt.WA_TranslucentBackground)
+
+ self._single_item = single_item
+ self._allow_sequences = allow_sequences
+ self._allowed_extensions = set()
+ self._allow_folders = None
+
+ self._drop_label_widget = drop_label_widget
+ self._items_label_widget = items_label_widget
+
+ self.set_allow_folders(False)
+
+ def set_extensions(self, extensions):
+ if extensions:
+ extensions = {
+ ext.replace(".", "")
+ for ext in extensions
+ }
+ if extensions == self._allowed_extensions:
+ return
+ self._allowed_extensions = extensions
+
+ self._update_items_label()
+
+ def set_allow_folders(self, allowed):
+ if self._allow_folders == allowed:
+ return
+
+ self._allow_folders = allowed
+ self._update_items_label()
+
+ def _update_items_label(self):
+ allowed_items = []
+ if self._allow_folders:
+ allowed_items.append("folder")
+
+ if self._allowed_extensions:
+ allowed_items.append("file")
+ if self._allow_sequences:
+ allowed_items.append("sequence")
+
+ if not self._single_item:
+ allowed_items = [item + "s" for item in allowed_items]
+
+ if not allowed_items:
+ self._items_label_widget.setText(
+ "It is not allowed to add anything here!"
+ )
+ return
+
+ items_label = "Multiple "
+ if self._single_item:
+ items_label = "Single "
+
+ if len(allowed_items) == 1:
+ allowed_items_label = allowed_items[0]
+ elif len(allowed_items) == 2:
+ allowed_items_label = " or ".join(allowed_items)
+ else:
+ last_item = allowed_items.pop(-1)
+ new_last_item = " or ".join(last_item, allowed_items.pop(-1))
+ allowed_items.append(new_last_item)
+ allowed_items_label = ", ".join(allowed_items)
+
+ items_label += allowed_items_label
+ if self._allowed_extensions:
+ items_label += " of\n{}".format(
+ ", ".join(sorted(self._allowed_extensions))
+ )
+
+ self._items_label_widget.setText(items_label)
 
  def paintEvent(self, event):
  super(DropEmpty, self).paintEvent(event)
@@ -188,7 +272,12 @@ def set_allow_folders(self, allow=None):
 
  def set_allowed_extensions(self, extensions=None):
  if extensions is not None:
- extensions = set(extensions)
+ _extensions = set()
+ for ext in set(extensions):
+ if not ext.startswith("."):
+ ext = ".{}".format(ext)
+ _extensions.add(ext.lower())
+ extensions = _extensions
 
  if self._allowed_extensions != extensions:
  self._allowed_extensions = extensions
@@ -444,7 +533,7 @@ def __init__(self, single_item, allow_sequences, parent):
  super(FilesWidget, self).__init__(parent)
  self.setAcceptDrops(True)
 
- empty_widget = DropEmpty(self)
+ empty_widget = DropEmpty(single_item, allow_sequences, self)
 
  files_model = FilesModel(single_item, allow_sequences)
  files_proxy_model = FilesProxyModel()
@@ -519,6 +608,8 @@ def current_value(self):
  def set_filters(self, folders_allowed, exts_filter):
  self._files_proxy_model.set_allow_folders(folders_allowed)
  self._files_proxy_model.set_allowed_extensions(exts_filter)
+ self._empty_widget.set_extensions(exts_filter)
+ self._empty_widget.set_allow_folders(folders_allowed)
 
  def _on_rows_inserted(self, parent_index, start_row, end_row):
  for row in range(start_row, end_row + 1):