Merge pull request #23 from Kr-Adarsh/main

Created an Intuitive GUI

GUI/GUI_main.py

@@ -0,0 +1,262 @@
+from PyQt5 import uic
+import time
+import student
+import file_operations
+from PyQt5.QtCore import QTimer,Qt
+from PyQt5.QtWidgets import QApplication, QMainWindow, QMessageBox,QProgressBar, QTextEdit, QTableWidget, QTableWidgetItem, QHeaderView,QLineEdit,QPushButton
+
+class Mygui(QMainWindow):
+
+    def __init__(self):
+        super(Mygui, self).__init__()
+
+        # Load the .ui file 
+        uic.loadUi("GUI\\pages.ui", self)
+
+        self.tableWidget = self.findChild(QTableWidget, "tableWidget")
+        self.pushButton_6.clicked.connect(self.display_records)
+
+        header = self.tableWidget.horizontalHeader()
+        header.setStretchLastSection(True) 
+        header.setSectionResizeMode(QHeaderView.Fixed)
+        # Connect button signals
+        self.setup_buttons()
+        self.progressBar.setValue(3)
+        self.show()
+
+    def setup_buttons(self):
+        """Connect buttons to their specific actions."""
+        # to switch between pages in a QStackedWidget
+
+        self.pushButton_1.clicked.connect(lambda: self.stackedWidget.setCurrentIndex(0))  #first page
+        self.pushButton_5.clicked.connect(lambda: self.stackedWidget.setCurrentIndex(2))  #second page
+        self.pushButton_7.clicked.connect(lambda: self.stackedWidget.setCurrentIndex(1))  #third page
+        # To add details:
+        self.pushButton.clicked.connect(self.add_record)
+        # To Show the records:
+        self.pushButton_6.clicked.connect(self.display_records)
+        # To check the roll number: 
+        self.pushButton_2.clicked.connect(self.check_records)
+        # To update the records:
+        self.pushButton_3.clicked.connect(self.update_student_record)
+        # To delete all Records: 
+        self.pushButton_8.clicked.connect(self.delete_all_records)
+        # For buttons to work via enter key:
+        # Update-1
+        self.setTabOrder(self.lineEdit_4,self.pushButton_2)
+        # Update-2
+        self.setTabOrder(self.lineEdit_6,self.lineEdit_5)
+        self.setTabOrder(self.lineEdit_5,self.pushButton_3)
+        # Add
+        self.setTabOrder(self.lineEdit,self.lineEdit_2)
+        self.setTabOrder(self.lineEdit_3,self.pushButton)
+
+    def mousePressEvent(self, event):
+        """Reset the progress bar to zero when any part of the window is clicked."""
+        self.progressBar.setValue(0)
+        super(Mygui, self).mousePressEvent(event)
+    def update_progress_bar(self):
+        """fill the progress bar with a small delay."""
+        for i in range(101):
+            time.sleep(0.001)
+            self.progressBar.setValue(i)
+
+    def add_record(self):
+        roll = self.lineEdit.text()
+        name = self.lineEdit_2.text()
+        percentage = self.lineEdit_3.text()
+
+        #check if fields are not empty and percentage is numeric
+        if roll.isdigit() and percentage.replace('.', '', 1).isdigit():
+            student_obj = student.Student()
+            student_obj.add_record(int(roll), name, float(percentage))
+
+            self.textEdit.append("Details have been successfully added!")
+            # Write the student record to the binary file using file_operations
+            result = file_operations.write_record(student_obj)
+            self.statusBar().showMessage(result)  
+            # Progress bar:
+            QTimer.singleShot(0, self.update_progress_bar)
+            # Clear the input fields
+            self.lineEdit.clear()
+            self.lineEdit_2.clear()
+            self.lineEdit_3.clear()
+        else:
+            self.statusBar().showMessage("Invalid input. Please check the fields.")
+
+    def check_records(self):
+        """Check if the roll number exists and display the student details."""
+        roll = self.lineEdit_4.text()
+
+        if roll.isdigit():
+            roll = int(roll)
+            student_record = file_operations.get_record(roll)
+
+            if student_record:
+                # If student_record is a string, split it into components
+                record_fields = student_record.split(",")
+                if len(record_fields) == 3:  # Ensure there are exactly 3 fields
+                    roll, name, percentage = record_fields
+                    # Format the student data and display it in the textEdit widget
+                    self.textBrowser.setText(f"Roll Number: {roll.strip()}\n"
+                    f"Name: {name.strip()}\n"
+                    f"Percentage: {percentage.strip()}")
+                    self.statusBar().showMessage("Record found!")
+                else:
+                    self.textBrowser.setText("Error: Record format is incorrect.")
+                    self.statusBar().showMessage("Record format error.")
+            else:
+                # If the roll number is not found, show an error message
+                self.textBrowser.setText("No record found for this roll number.")
+                self.statusBar().showMessage("Record not found.")
+        else:
+            self.statusBar().showMessage("Invalid roll number.")
+
+    def update_student_record(self):
+        # Get roll number, new name, and new percentage from the input fields
+        roll = self.lineEdit_4.text()
+        new_name = self.lineEdit_6.text()
+        new_percentage = self.lineEdit_5.text()
+
+        if roll.isdigit():
+            roll = int(roll)
+            if not new_name or not new_percentage:
+                self.statusBar().showMessage("Please provide new details to update.")
+                return
+
+            # If percentage is provided, ensure it's valid
+            if new_percentage and not new_percentage.replace('.', '', 1).isdigit():
+                self.statusBar().showMessage("Invalid percentage value.")
+                return
+
+            new_percentage = float(new_percentage) if new_percentage else None
+
+            # Call the update_record function
+            result = file_operations.update_record(roll, new_name, new_percentage)
+            print(f"Update result: {result}")
+
+            # For a success pop-up dialog box
+            msg = QMessageBox()
+            msg.setIcon(QMessageBox.Information)
+            msg.setText(f"Record for Roll Number {roll} has been updated successfully.")
+            msg.setWindowTitle("Success")
+            msg.exec_()
+
+            # Display the result of the update
+            if result == "Record updated successfully.":
+                self.display_records()
+            else:
+                self.statusBar().showMessage(result)
+
+            # Clear the input fields after the update
+            self.lineEdit_4.clear()
+            self.lineEdit_6.clear()
+            self.lineEdit_5.clear()
+            self.textBrowser.clear()
+        else:
+            self.statusBar().showMessage("Invalid roll number.")
+
+    def keyPressEvent(self, event):
+        if event.key() == Qt.Key_Return or event.key() == Qt.Key_Enter:
+            # Get the currently focused widget
+            focused_widget = self.focusWidget()
+
+            # Check if the focused widget is a QLineEdit
+            if isinstance(focused_widget, QLineEdit):
+                # Move to the next input field or button if focus is on QLineEdit
+                self.focusNextChild()
+            elif isinstance(focused_widget, QPushButton):
+                # Click the QPushButton if it is focused
+                focused_widget.animateClick() 
+            else:
+                buttons = self.findChildren(QPushButton)
+                for button in buttons:
+                    if button.hasFocus():
+                        button.animateClick()
+                        break
+
+        super(Mygui, self).keyPressEvent(event)
+
+    def display_records(self):
+        records = file_operations.display_all_records()  # Get all records from the file
+
+        # Clear the table before displaying new records
+        self.tableWidget.clearContents()
+
+        # Reset row count to match the number of records
+        self.tableWidget.setRowCount(0)  
+
+        # Set the number of columns and headers
+        self.tableWidget.setColumnCount(3)
+        self.tableWidget.setHorizontalHeaderLabels(["Roll Number", "Name", "Percentage"])
+
+        # Enable the grid and set grid style (if needed)
+        self.tableWidget.setShowGrid(True)
+        self.tableWidget.setGridStyle(1) 
+
+        self.tableWidget.horizontalHeader().setStretchLastSection(True)
+        self.tableWidget.setAlternatingRowColors(True)
+
+        # Set column width to ensure text fits properly
+        self.tableWidget.setColumnWidth(0, 150)  # Adjust the width for Roll Number
+        self.tableWidget.setColumnWidth(1, 200)  # Adjust the width for Name
+        self.tableWidget.setColumnWidth(2, 150)  # Adjust the width for Percentage
+
+        if records and records[0] != "No records found.":
+            # Set row count to the number of records
+            self.tableWidget.setRowCount(len(records))
+            for row, record in enumerate(records):
+                fields = record.strip().split(",")
+                if len(fields) == 3:
+                    roll, name, percentage = fields
+                    self.tableWidget.setItem(row, 0, QTableWidgetItem(roll.strip()))
+                    self.tableWidget.setItem(row, 1, QTableWidgetItem(name.strip()))
+                    self.tableWidget.setItem(row, 2, QTableWidgetItem(percentage.strip()))
+        else:
+            # If no records, ensure the table is empty
+            self.tableWidget.setRowCount(1)
+            self.tableWidget.setItem(0, 0, QTableWidgetItem("No records found"))
+
+    # Delete all records with confirmation dialog
+    def delete_all_records(self):
+        """Show a confirmation dialog before deleting all records."""
+        msg = QMessageBox()
+        msg.setIcon(QMessageBox.Warning)
+        msg.setWindowTitle("Delete All Records")
+        msg.setText("Are you sure you want to delete all records?")
+        msg.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
+
+        # Show the confirmation dialog and check the user's choice
+        result = msg.exec_()
+
+        if result == QMessageBox.Yes:
+            # Call the file operation to clear all records
+            result = file_operations.clear_all_records()  # Make sure to implement this function
+            if result == "All records deleted.":
+                self.display_records()  # Refresh the table after deletion
+                self.statusBar().showMessage("All records have been deleted.")
+            else:
+                self.statusBar().showMessage("Error deleting records.")
+        else:
+            self.statusBar().showMessage("Delete action canceled.")
+
+
+def load_stylesheet(app, stylesheet_file):
+    """Load the external QSS file."""
+    try:
+        with open(stylesheet_file, "r") as file:
+            app.setStyleSheet(file.read())
+    except Exception as e:
+        print(f"Error loading stylesheet: {e}")
+
+def main():
+    app = QApplication([])
+
+    # Load the external stylesheet
+    load_stylesheet(app, "GUI/stylesheet.qss")
+    window = Mygui()
+    app.exec_()
+
+if __name__ == '__main__':
+    main()
+

GUI/GUI_student.py

@@ -9,7 +9,7 @@ class Mygui(QMainWindow):
 
     def __init__(self):
         super(Mygui, self).__init__()
-        uic.loadUi("first_gui.ui", self)
+        uic.loadUi("Student-Management-System\\GUI\\first_gui.ui", self)
 
         self.show()
 

GUI/file_operations.py

@@ -6,20 +6,20 @@
 def write_record(student):
     try:
         with open("stud.dat", "ab") as file:
-            pickle.dump(student, file)  # Ensure student is a Student instance
-        return "Record added in file!"
+            pickle.dump(student, file)  # Add the student object to the file
+        print("New record added successfully.")
+        return "Record added successfully."
     except Exception as e:
-        return f"Error: {str(e)}"
-
-
+        return f"Error writing record: {e}"
+
 def display_all_records():
     records = []
     try:
         with open("stud.dat", "rb") as file:
             while True:
                 try:
                     student = pickle.load(file)  # Load the Student object
-                    records.append(student.display_record())  # Append the student's record
+                    records.append(student.display_record()) 
                 except EOFError:
                     break 
         return records if records else ["No records found."]
@@ -29,6 +29,70 @@ def display_all_records():
         return ["Error in unpickling data! The file might be corrupted."]
     except IOError:
         return ["File could not be opened!"]
+
+def update_record(roll_number, new_name=None, new_percentage=None):
+    updated = False
+    records = []
+
+    try:
+        # Open the file in read-binary mode
+        with open("stud.dat", "rb") as file:
+            while True:
+                try:
+                    student_obj = pickle.load(file)  # Load each student record
+                    if student_obj.roll == roll_number:
+                        # Update the student details
+                        if new_name:
+                            student_obj.name = new_name.upper()
+                        if new_percentage is not None:
+                            student_obj.per = new_percentage
+                        updated = True
+                    records.append(student_obj)
+                except EOFError:
+                    break
+
+        # Rewrite the updated records
+        with open("stud.dat", "wb") as file:
+            for student_obj in records:
+                pickle.dump(student_obj, file)
+
+        if updated:
+            return f"Record for Roll Number {roll_number} updated successfully."
+        else:
+            return f"Record with Roll Number {roll_number} not found."
+
+    except FileNotFoundError:
+        return "File not found! Please add a record first."
+    except pickle.UnpicklingError:
+        return "Error in unpickling data! The file might be corrupted."
+    except Exception as e:
+        return f"An error occurred: {e}"
+
+def get_record(roll_number):
+    try:
+        with open("stud.dat", "rb") as file:
+            while True:
+                try:
+                    student_obj = pickle.load(file)  # Load each student object
+                    if student_obj.roll == roll_number:
+                        return student_obj.display_record()  # Return the record if roll number matches
+                except EOFError:
+                    break
+        return f"Record with Roll Number {roll_number} not found."
+    except FileNotFoundError:
+        return "File not found! Please add a record first."
+    except pickle.UnpicklingError:
+        return "Error in unpickling data! The file might be corrupted."
+    except Exception as e:
+        return f"An error occurred: {e}"
+
+def clear_all_records():
+    try:
+        with open("stud.dat", "wb") as file:
+            pass  # This will clear the file
+        return "All records deleted."
+    except Exception as e:
+        return f"Error deleting records: {str(e)}"
 
 def delete_file(self):
     try: