agr files with skipped set/graph numbers were not read nor written; fixes T252

src/gui_qt/io/filereaders.py

@@ -58,7 +58,7 @@ class QFileReader(QtCore.QObject):
             try:
                 # If QAsciiReader.skip = True it accepts automatically and returns None
                 r(f).exec()
-            except AttributeError:
+            except ImportError:
                 pass
 
         self.data_read.emit(self.data)

src/gui_qt/io/gracereader.py

@@ -20,6 +20,8 @@ class QGraceReader(QtWidgets.QDialog, Ui_Dialog):
         self.treeWidget.installEventFilter(self)
 
     def __call__(self, fname, *args, **kwargs):
+        self.treeWidget.clear()
+        self.show_property(self.treeWidget.invisibleRootItem(), 0)
         self.read(fname)
 
         return self
@@ -43,12 +45,17 @@ class QGraceReader(QtWidgets.QDialog, Ui_Dialog):
 
     def read(self, fname):
         self._reader.parse(fname)
+        print('halio', len(self._reader.graphs))
 
         for graphs in self._reader.graphs:
             item = QtWidgets.QTreeWidgetItem([f'Graph {graphs.idx} (Title "{graphs.get_property("title")}")'])
             for gset in graphs.set:
+                ds = self._reader.dataset(graphs.idx, gset.idx)
+                if ds is None:
+                    continue
+
                 item_2 = QtWidgets.QTreeWidgetItem([f'Set {gset.idx} (Label:  {gset.get_property("legend")}, '
-                                                    f'shape: {self._reader.dataset(graphs.idx, gset.idx).shape})'])
+                                                    f'shape: {ds.shape})'])
                 item_2.setCheckState(0, QtCore.Qt.Checked)
                 item_2.setData(0, QtCore.Qt.UserRole, (graphs.idx, gset.idx))
                 item.addChild(item_2)