- Implement CSV import with validation (students, courses, classrooms, enrollments)

- Create MVC architecture with DataManager singleton - Add search/filter functionality for all views
2025-12-31 20:31:22 +00:00 · 2025-12-11 00:07:10 +03:00
parent 393751bc8b
commit 8f3cfa2eed
22 changed files with 1997 additions and 3 deletions
--- a/src/main/java/org/example/se302/controller/CoursesController.java
+++ b/src/main/java/org/example/se302/controller/CoursesController.java
@@ -0,0 +1,136 @@
+package org.example.se302.controller;
+
+import javafx.beans.property.SimpleIntegerProperty;
+import javafx.beans.property.SimpleStringProperty;
+import javafx.collections.FXCollections;
+import javafx.collections.transformation.FilteredList;
+import javafx.fxml.FXML;
+import javafx.scene.control.*;
+import javafx.scene.layout.VBox;
+import org.example.se302.model.Course;
+import org.example.se302.service.DataManager;
+
+/**
+ * Controller for the Courses view.
+ */
+public class CoursesController {
+
+    @FXML private TextField searchField;
+    @FXML private Label resultCountLabel;
+    @FXML private TableView<Course> coursesTable;
+    @FXML private TableColumn<Course, String> courseCodeColumn;
+    @FXML private TableColumn<Course, Number> studentCountColumn;
+    @FXML private TableColumn<Course, String> classroomColumn;
+    @FXML private TableColumn<Course, String> examDateColumn;
+    @FXML private TableColumn<Course, Void> actionColumn;
+
+    @FXML private VBox studentListPanel;
+    @FXML private Label studentListTitleLabel;
+    @FXML private TableView<String> enrolledStudentsTable;
+    @FXML private TableColumn<String, String> enrolledStudentIdColumn;
+    @FXML private Label enrolledCountLabel;
+
+    private DataManager dataManager;
+    private FilteredList<Course> filteredCourses;
+
+    @FXML
+    public void initialize() {
+        dataManager = DataManager.getInstance();
+
+        // Set up table columns
+        courseCodeColumn.setCellValueFactory(cellData ->
+                new SimpleStringProperty(cellData.getValue().getCourseCode()));
+
+        studentCountColumn.setCellValueFactory(cellData ->
+                new SimpleIntegerProperty(cellData.getValue().getEnrolledStudentsCount()));
+
+        classroomColumn.setCellValueFactory(cellData -> {
+            String classroom = cellData.getValue().getAssignedClassroom();
+            return new SimpleStringProperty(classroom != null ? classroom : "Not Assigned");
+        });
+
+        examDateColumn.setCellValueFactory(cellData -> {
+            String examDate = cellData.getValue().getExamDateTime();
+            return new SimpleStringProperty(examDate != null ? examDate : "Not Scheduled");
+        });
+
+        // Add "View Students" button to action column
+        actionColumn.setCellFactory(col -> new TableCell<>() {
+            private final Button viewButton = new Button("View Students");
+
+            {
+                viewButton.setOnAction(event -> {
+                    Course course = getTableView().getItems().get(getIndex());
+                    showEnrolledStudents(course);
+                });
+            }
+
+            @Override
+            protected void updateItem(Void item, boolean empty) {
+                super.updateItem(item, empty);
+                setGraphic(empty ? null : viewButton);
+            }
+        });
+
+        // Set up enrolled students table column
+        enrolledStudentIdColumn.setCellValueFactory(cellData ->
+                new SimpleStringProperty(cellData.getValue()));
+
+        // Set up filtered list
+        filteredCourses = new FilteredList<>(dataManager.getCourses(), p -> true);
+        coursesTable.setItems(filteredCourses);
+
+        // Set up search functionality
+        searchField.textProperty().addListener((observable, oldValue, newValue) -> {
+            filterCourses(newValue);
+        });
+
+        // Update result count
+        updateResultCount();
+        filteredCourses.addListener((javafx.collections.ListChangeListener<Course>) c -> updateResultCount());
+    }
+
+    @FXML
+    private void onClearSearch() {
+        searchField.clear();
+    }
+
+    @FXML
+    private void onCloseStudentList() {
+        studentListPanel.setVisible(false);
+        studentListPanel.setManaged(false);
+    }
+
+    private void filterCourses(String searchText) {
+        if (searchText == null || searchText.trim().isEmpty()) {
+            filteredCourses.setPredicate(course -> true);
+        } else {
+            String lowerCaseFilter = searchText.toLowerCase().trim();
+            filteredCourses.setPredicate(course ->
+                    course.getCourseCode().toLowerCase().contains(lowerCaseFilter)
+            );
+        }
+    }
+
+    private void showEnrolledStudents(Course course) {
+        if (course == null) return;
+
+        studentListTitleLabel.setText("Students Enrolled in " + course.getCourseCode());
+        enrolledStudentsTable.setItems(FXCollections.observableArrayList(course.getEnrolledStudents()));
+        enrolledCountLabel.setText("Total: " + course.getEnrolledStudentsCount() + " students");
+
+        studentListPanel.setVisible(true);
+        studentListPanel.setManaged(true);
+    }
+
+    private void updateResultCount() {
+        int total = filteredCourses.size();
+        int overall = dataManager.getTotalCourses();
+
+        if (total == overall) {
+            resultCountLabel.setText("Total: " + total + " courses");
+        } else {
+            resultCountLabel.setText("Showing: " + total + " of " + overall + " courses");
+        }
+    }
+}