improve performance building data tree

src/gui_qt/data/datawidget/datawidget.py

@@ -61,7 +61,7 @@ class DataTree(QtWidgets.QTreeWidget):
 
         self.update_indexes()
 
-    def add_item(self, items: (tuple | list[tuple]), gid: str):
+    def add_item(self, items: (tuple | list[tuple]), gid: str, update: bool = True):
         if isinstance(items, tuple):
             items = [items]
 
@@ -80,7 +80,7 @@ class DataTree(QtWidgets.QTreeWidget):
 
                 self.resizeColumnToContents(0)
                 break
-
+        if update:
             self.update_indexes()
 
     @QtCore.pyqtSlot(QtWidgets.QTreeWidgetItem)
@@ -566,9 +566,9 @@ class DataWidget(QtWidgets.QWidget, Ui_DataWidget):
         self.tree.add_graph(idd, name)
         self.tree.blockSignals(False)
 
-    def add_item(self, idd: str, name: str, value: str, gid: str):
+    def add_item(self, idd: str, name: str, value: str, gid: str, update: bool= True):
         self.tree.blockSignals(True)
-        self.tree.add_item((idd, name, value), gid)
+        self.tree.add_item((idd, name, value), gid, update=update)
         self.tree.blockSignals(False)
 
     def add_item_list(self, loi: list, gid: str):

src/gui_qt/graphs/graphwindow.py

@@ -207,7 +207,7 @@ class QGraphWindow(QtWidgets.QGraphicsView, Ui_GraphWindow):
         else:
             QtWidgets.QMessageBox.warning(self, 'Display disabled',
                                           'If more than 200 sets are added at once, they are not displayed to avoid major performance issues.\n'
-                                          'Building the data tree may still take some time, the checkmark on the left is invalid.\n'
+                                          'The checkmark in the data tree is invalid.\n'
                                           'Please display them manually in smaller batches, thank you!')
 
     def remove(self, name: str | list):

src/gui_qt/main/mainwindow.py

@@ -353,8 +353,9 @@ class NMRMainWindow(QtWidgets.QMainWindow, Ui_BaseWindow):
         for idd in sets:
             new_item = self.management[idd]
             self.datawidget.blockSignals(True)
-            self.datawidget.add_item(new_item.id, new_item.name, new_item.value, graph)
+            self.datawidget.add_item(new_item.id, new_item.name, new_item.value, graph, update=False)
             self.datawidget.blockSignals(False)
+        self.datawidget.tree.update_indexes()
 
         # if graph == self.fit_dialog.connected_figure:
         #     self.fit_dialog.load(self.management.graphs.active(graph))