stop autoamtic ascii reading if first is cancelled (#260); close #251

Co-authored-by: Dominik Demuth <dominik.demuth@physik.tu-darmstadt.de>
Reviewed-on: #260

src/gui_qt/io/asciireader.py

@@ -178,7 +178,7 @@ class QAsciiReader(QtWidgets.QDialog, Ui_ascii_reader):
     @QtCore.pyqtSlot()
     def accept(self):
         if self.apply():
-            self.close()
+            super().accept()
 
     def apply(self):
         # default row for x is the first row, it will be superseded if an integer number is given.

src/gui_qt/io/filereaders.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 from pathlib import Path
 import struct
 
-from ..Qt import QtCore
+from ..Qt import QtCore, QtWidgets
 from .asciireader import QAsciiReader
 from .hdfreader import QHdfViewer
 from .bdsreader import QBDSReader
@@ -26,8 +26,12 @@ class QFileReader(QtCore.QObject):
         self.reader = {}
 
         for ext, reader in [
-            ('txt', QAsciiReader), ('dsc', QDSCReader), ('agr', QGraceReader),
-            ('bds', QBDSReader), ('hdf', QHdfViewer),  ('nmr', QNMRReader)
+            ('txt', QAsciiReader),
+            ('dsc', QDSCReader),
+            ('agr', QGraceReader),
+            ('bds', QBDSReader),
+            ('hdf', QHdfViewer),
+            ('nmr', QNMRReader),
         ]:
             self.register(ext, reader)
 
@@ -57,7 +61,10 @@ class QFileReader(QtCore.QObject):
 
             try:
                 # If QAsciiReader.skip = True it accepts automatically and returns None
-                r(f).exec()
+                status = r(f).exec()
+                if status == QtWidgets.QDialog.Rejected and isinstance(r, QAsciiReader):
+                    break
+
             except AttributeError:
                 pass