[processing] create widget correctly from wrapper when in batch mode

Author: slarosa

python/plugins/processing/gui/wrappers.py

@@ -761,7 +761,9 @@ def createWidget(self):
             self.combo.currentTextChanged.connect(lambda: self.widgetValueHasChanged.emit(self))
             return widget
         elif self.dialogType == DIALOG_BATCH:
-            return BatchInputSelectionPanel(self.param, self.row, self.col, self.dialog)
+            widget = BatchInputSelectionPanel(self.param, self.row, self.col, self.dialog)
+            widget.valueChanged.connect(lambda: self.widgetValueHasChanged.emit(self))
+            return widget
         else:
             self.combo = QComboBox()
             layers = self.getAvailableLayers()
@@ -1274,7 +1276,9 @@ def createWidget(self):
             return widget
 
         elif self.dialogType == DIALOG_BATCH:
-            return BatchInputSelectionPanel(self.param, self.row, self.col, self.dialog)
+            widget = BatchInputSelectionPanel(self.param, self.row, self.col, self.dialog)
+            widget.valueChanged.connect(lambda: self.widgetValueHasChanged.emit(self))
+            return widget
         else:
             self.combo = QComboBox()
             self.combo.setEditable(True)