fix(product-suite): enable original image drag sorting

app/gui/tabs/product_suite.py

@@ -308,6 +308,7 @@ class ProductOriginalList(QListWidget):
         self.setDragEnabled(True)
         self.setDropIndicatorShown(True)
         self.setDragDropMode(QListWidget.InternalMove)
+        self.setDefaultDropAction(Qt.MoveAction)
         self.setContextMenuPolicy(Qt.CustomContextMenu)
         self.customContextMenuRequested.connect(self._show_menu)
         self.itemChanged.connect(lambda item: self.checkedAssetsChanged.emit(self.checked_asset_ids()))
@@ -385,8 +386,12 @@ class ProductOriginalList(QListWidget):
         if not self._reordering_enabled:
             event.ignore()
             return
+        internal_move = event.source() is self
+        if internal_move:
+            event.setDropAction(Qt.MoveAction)
         super().dropEvent(event)
-        self.orderChanged.emit(self.asset_ids())
+        if internal_move and event.isAccepted() and event.dropAction() == Qt.MoveAction:
+            self.orderChanged.emit(self.asset_ids())
 
     def resizeEvent(self, event):
         super().resizeEvent(event)
@@ -3384,6 +3389,9 @@ class ProductSuiteTab(QWidget):
             for index, asset in enumerate(assets, 1):
                 label = "主图" if index == 1 else "参考%d" % (index - 1)
                 item = QListWidgetItem(label)
+                item.setFlags(
+                    item.flags() | Qt.ItemIsDragEnabled | Qt.ItemIsDropEnabled
+                )
                 if index == 1:
                     font = QFont(item.font())
                     font.setBold(True)