Add scheduler GUI

b_asic/scheduler-gui/main_window.py

@@ -19,14 +19,16 @@ from pprint         import pprint
 #from diagram import *
 from importlib.machinery import SourceFileLoader
 import inspect
+from numpy import uint
 
 # Qt/qtpy
 import qtpy
 from qtpy           import uic, QtCore, QtGui, QtWidgets
-from qtpy.QtCore    import Qt, Slot, QSettings, QStandardPaths
+from qtpy.QtCore    import QCoreApplication, Qt, Slot, QSettings, QStandardPaths
+#QtCore QSize, QPoint
 from qtpy.QtGui     import QCloseEvent
 from qtpy.QtWidgets import (
-    QApplication, QMainWindow, QMessageBox, QFileDialog, QInputDialog)
+    QApplication, QMainWindow, QMessageBox, QFileDialog, QInputDialog, QCheckBox)
 
 # QGraphics and QPainter imports
 from qtpy.QtWidgets import (
@@ -41,7 +43,6 @@ from qtpy.QtCore    import (
 
 # B-ASIC
 import logger
-#import b_asic.schedule
 from b_asic.schedule    import Schedule
 
 
@@ -94,24 +95,29 @@ if __debug__:
                 os._exit(1)
 
 
-from ui_main_window import Ui_MainWindow             # Only availible when the form is compiled
+from ui_main_window import Ui_MainWindow             # Only availible when the form (.ui) is compiled
 
 
+# The folowing QCoreApplication values is used for QSettings among others
+QCoreApplication.setOrganizationName('Linöping University')
+QCoreApplication.setOrganizationDomain('liu.se')
+QCoreApplication.setApplicationName('B-ASIC Scheduler')
+#QCoreApplication.setApplicationVersion(__version__)     # TODO: read from packet __version__
+
 
 
 class MainWindow(QMainWindow, Ui_MainWindow):
     """Schedule of an SFG with scheduled Operations."""
 
-    _settings: QSettings
     _schedules: dict
     
     def __init__(self):
         """Initialize Schedule-gui."""
         super(MainWindow, self).__init__()
-        self._settings  = QSettings()
         self._schedules = {}
         self._init_ui()
         self._init_graphics_view()
+        self._read_settings()
 
         
 
@@ -129,7 +135,7 @@ class MainWindow(QMainWindow, Ui_MainWindow):
 
         # Setup event member functions
         self.closeEvent = self._close_event
-
+        
         # Init info sidebar
         for i in range(10):
             self.listWidget.addItem('this is a very very very very long string that says abolutly nothing' + str(i))
@@ -156,9 +162,7 @@ class MainWindow(QMainWindow, Ui_MainWindow):
     ###############
     @Slot()
     def callback_pushButton(self) -> None:
-        #diagram = Diagram()
-        
-        pass
+        self.printButtonPressed('callback_pushButton()')
     
     @Slot()
     def _load_schedule_from_pyfile(self) -> None:
@@ -210,7 +214,7 @@ class MainWindow(QMainWindow, Ui_MainWindow):
     
     #@Slot()
     def open(self, schedule: Schedule) -> None:
-        """This method loads an SFG and create a base schedule in gui."""
+        """Takes in an Schedule and place it in the schedule list."""
         #TODO: all
         self.printButtonPressed('load_sfg()')
         self.update_statusbar(self.tr('SFG loaded successfully'))
@@ -225,20 +229,24 @@ class MainWindow(QMainWindow, Ui_MainWindow):
     @Slot(bool)
     def toggle_component_info(self, checked: bool) -> None:
         """This method toggles the right hand side info window."""
-        widths = list(self.splitter_center.sizes())
-        max_range = widths[0] + widths[1]
+        # Note: splitter handler index 0 is a hidden splitter handle far most left, use index 1
+        settings = QSettings()
+        range = self.splitter_center.getRange(1)    # tuple(min, max)
+        
         if checked:
-            self.splitter_center.restoreState(self._settings.value("splitterSizes"));
+            self.splitter_center.restoreState(settings.value("mainwindow/splitter_center/last_state"))
+            # self.splitter_center.restoreState(settings.value("splitterSizes"))
         else:
-            self._settings.setValue("splitterSizes", self.splitter_center.saveState());
-            self.splitter_center.moveSplitter(max_range, 1)     # Note: splitter index starts at 1
+            settings.setValue("mainwindow/splitter_center/last_state", self.splitter_center.saveState())
+            self.splitter_center.moveSplitter(range[1], 1)
 
     @Slot(int, int)
     def _splitter_center_moved(self, pos: int, index: int) -> None:
         """Callback method used to check if the right widget (info window) 
         has collapsed. Update the checkbutton accordingly."""
+        # TODO: Custom move handler, save state on click-release?
         widths: list[int, int] = list(self.splitter_center.sizes())
-        #TODO: Custom move handler, save state on click-release?
+        
         if widths[1] == 0:
             self.menu_node_info.setChecked(False)
         else:
@@ -250,20 +258,29 @@ class MainWindow(QMainWindow, Ui_MainWindow):
     #### Events ####
     ################
     def _close_event(self, event: QCloseEvent) -> None:
-        """Replace QMainWindow default closeEvent(QCloseEvent) event"""
-
-        box = QMessageBox(self)
-        box.setWindowTitle(self.tr('Confirm Exit'))
-        box.setText('<h3>' + self.tr('Confirm Exit') + '</h3><p><br>' +
-                    self.tr('Are you sure you want to exit?') +
-                    '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br></p>')
-        box.setIcon(QMessageBox.Question)
-        box.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
-        box.setButtonText(QMessageBox.Yes, self.tr("&Exit"))
-        box.setButtonText(QMessageBox.No, self.tr("&Cancel"))
+        """Replaces QMainWindow default closeEvent(QCloseEvent) event"""
+        s = QSettings()
+        hide_dialog = s.value('mainwindow/hide_exit_dialog', False, bool)
+        ret = QMessageBox.StandardButton.Yes
+        
+        if not hide_dialog:
+            box = QMessageBox(self)
+            box.setWindowTitle(self.tr('Confirm Exit'))
+            box.setText('<h3>' + self.tr('Confirm Exit') + '</h3><p><br>' +
+                        self.tr('Are you sure you want to exit?') +
+                        '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br></p>')
+            box.setIcon(QMessageBox.Question)
+            box.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
+            box.setButtonText(QMessageBox.Yes, self.tr("&Exit"))
+            box.setButtonText(QMessageBox.No, self.tr("&Cancel"))
+            checkbox = QCheckBox('Don\'t ask again')
+            box.setCheckBox(checkbox)
+            ret = box.exec_()
         
-        ret = box.exec_()
         if ret == QMessageBox.StandardButton.Yes:
+            if not hide_dialog:
+                s.setValue('mainwindow/hide_exit_dialog', checkbox.isChecked())
+            self._write_settings()
             log.info('Exit: {}'.format(os.path.basename(__file__)))
             event.accept()
         else:
@@ -285,6 +302,29 @@ class MainWindow(QMainWindow, Ui_MainWindow):
     def update_statusbar(self, msg: str) -> None:
         """Write the given str to the statusbar with temporarily policy."""
         self.statusbar.showMessage(msg)
+        
+    def _write_settings(self) -> None:
+        """Write settings from MainWindow to Settings."""
+        s = QSettings()
+        s.setValue('mainwindow/geometry',       self.saveGeometry())    # window: pos, size
+        s.setValue('mainwindow/state',          self.saveState())       # toolbars, dockwidgets: pos, size
+        s.setValue('mainwindow/menu/node_info', self.menu_node_info.isChecked())
+        s.setValue('mainwindow/splitter/state', self.splitter_center.saveState())
+
+        if s.isWritable():
+            log.debug('Settings written to \'{}\'.'.format(s.fileName()))
+        else:
+            log.warning('Settings cant be saved to file, read-only.')
+    
+    def _read_settings(self) -> None:
+        """Read settings from Settings to MainWindow."""
+        s = QSettings()
+        self.restoreGeometry(               s.value('mainwindow/geometry'))
+        self.restoreState(                  s.value('mainwindow/state'))
+        self.menu_node_info.setChecked(     s.value('mainwindow/menu/node_info', True, type=bool))
+        self.splitter_center.restoreState(  s.value('mainwindow/splitter/state'))
+
+        log.debug('Settings read from \'{}\'.'.format(s.fileName()))
 
 
 def start_gui():