change dir_names to list_of_dir, current directory to gps dialog because...

 change dir_names to list_of_dir, current directory to gps dialog because there can be more than one folder loaded; change from read_from_file_list to get_file_list(); remove try catch in get_file_list() because it is catch at the call of this function

sohstationviewer/view/main_window.py

@@ -61,7 +61,7 @@ class MainWindow(QtWidgets.QMainWindow, UIMainWindow):
         """
         dir_names: list of absolute path of data set directory
         """
-        self.dir_names: List[Path] = []
+        self.list_of_dir: List[Path] = []
         """
         current_dir: str - the current main data directory
         """
@@ -261,12 +261,12 @@ class MainWindow(QtWidgets.QMainWindow, UIMainWindow):
             front.
         """
         try:
-            self.read_from_file_list()
+            self.get_file_list()
         except Exception as e:
             QtWidgets.QMessageBox.warning(self, "Select directory", str(e))
             return
         try:
-            win = ChannelPreferDialog(self, self.dir_names)
+            win = ChannelPreferDialog(self, self.list_of_dir)
             win.show()
         except DialogAlreadyOpenedError:
             ChannelPreferDialog.current_instance.activateWindow()
@@ -448,13 +448,13 @@ class MainWindow(QtWidgets.QMainWindow, UIMainWindow):
         return (self.pref_soh_list
                 if not self.all_soh_chans_check_box.isChecked() else [])
 
-    def read_from_file_list(self):
+    def get_file_list(self):
         """
         Read from self.open_files_list to identify
             self.dir_names/self.selected_rt130_paths.
         self.data_type is identified here too.
         """
-        self.dir_names = ['']
+        self.list_of_dir = ['']
         self.selected_rt130_paths = []
         root_dir = Path(self.curr_dir_line_edit.text())
         if self.rt130_das_dict != {}:
@@ -472,30 +472,28 @@ class MainWindow(QtWidgets.QMainWindow, UIMainWindow):
             # displayed in File List box. The current dir (root_dir) will be
             # the only one of the selected dir for user to start processing
             # from.
-            self.dir_names = [root_dir]
+            self.list_of_dir = [root_dir]
             if self.data_radio_button.isEnabled():
                 # In case of Baler's data, there will be 2 data folders for
                 # user to select from, data/ and sdata/. The radio buttons
                 # data and sdata allow user to select from Main Window.
                 if self.data_radio_button.isChecked():
-                    self.dir_names = [root_dir.joinpath('data')]
+                    self.list_of_dir = [root_dir.joinpath('data')]
                 else:
-                    self.dir_names = [root_dir.joinpath('sdata')]
+                    self.list_of_dir = [root_dir.joinpath('sdata')]
         else:
             # When "From Data Card" checkbox is checked, sub directories of the
             # current dir (root_dir) will be displayed in File List box.
             # User can select one or more sub-directories to process from.
-            self.dir_names = [root_dir.joinpath(item.text())
-                              for item in self.open_files_list.selectedItems()]
-            if self.dir_names == []:
+            self.list_of_dir = [
+                root_dir.joinpath(item.text())
+                for item in self.open_files_list.selectedItems()]
+            if self.list_of_dir == []:
                 msg = "No directories have been selected."
                 raise Exception(msg)
 
         if self.rt130_das_dict == {}:
-            try:
-                self.data_type = detect_data_type(self.dir_names)
-            except Exception as e:
-                raise e
+            self.data_type = detect_data_type(self.list_of_dir)
 
     def clear_plots(self):
         self.plotting_widget.clear()
@@ -560,12 +558,14 @@ class MainWindow(QtWidgets.QMainWindow, UIMainWindow):
                               else [])
 
         try:
-            self.read_from_file_list()
+            self.get_file_list()
         except Exception as e:
-            QtWidgets.QMessageBox.warning(self, "Select directory", str(e))
+            QtWidgets.QMessageBox.warning(
+                self, "Directories",
+                f"Error in get_file_list:\n\n{str(e)}")
             return
 
-        dir_size = sum(get_dir_size(str(dir))[0] for dir in self.dir_names)
+        dir_size = sum(get_dir_size(str(dir))[0] for dir in self.list_of_dir)
         if dir_size > constants.BIG_FILE_SIZE:
             data_too_big_dialog = QMessageBox()
             data_too_big_dialog.setText('Chosen data set is very big. It '
@@ -594,14 +594,14 @@ class MainWindow(QtWidgets.QMainWindow, UIMainWindow):
         self.end_tm = datetime.strptime(end_tm_str, TM_FORMAT).timestamp()
 
         self.gps_dialog.clear_plot()
-        self.gps_dialog.data_path = self.dir_names[0]
-        self.gps_dialog.set_export_directory(str(self.dir_names[0]))
+        self.gps_dialog.data_path = self.curr_dir_line_edit.text()
+        self.gps_dialog.set_export_directory(self.curr_dir_line_edit.text())
         self.gps_dialog.gps_points = []
 
         self.data_loader.init_loader(
             self.data_type,
             self.tracking_info_text_browser,
-            self.dir_names,
+            self.list_of_dir,
             self.selected_rt130_paths,
             req_wf_chans=self.req_wf_chans,
             req_soh_chans=self.req_soh_chans,
@@ -754,7 +754,7 @@ class MainWindow(QtWidgets.QMainWindow, UIMainWindow):
             self.is_plotting_tps = True
             peer_plotting_widgets.append(self.tps_dlg.plotting_widget)
             self.tps_dlg.set_data(
-                self.data_type, ','.join([str(d) for d in self.dir_names]))
+                self.data_type, ','.join([str(d) for d in self.list_of_dir]))
             self.tps_dlg.show()
             # The waveform and TPS plots is being stopped at the same time, so
             # we can't simply reset all flags. Instead, we use an intermediate
@@ -775,7 +775,7 @@ class MainWindow(QtWidgets.QMainWindow, UIMainWindow):
             # waveformPlot
             peer_plotting_widgets.append(self.waveform_dlg.plotting_widget)
             self.waveform_dlg.set_data(
-                self.data_type, ','.join([str(d) for d in self.dir_names]))
+                self.data_type, ','.join([str(d) for d in self.list_of_dir]))
             self.waveform_dlg.show()
             waveform_widget = self.waveform_dlg.plotting_widget
             waveform_widget.stopped.connect(self.reset_is_plotting_waveform)