Polished up some views, made it so that when the start view is disposed, all child views are disposed of.

About to begin the management view! Exciting stuff.

src/main/java/nl/andrewlalis/Main.java

@@ -50,7 +50,7 @@ public class Main {
                 "Program initialized.");
 
         GithubManager manager = new GithubManager();
-        StartView startView = new StartView(manager);
+        StartView startView = new StartView(manager, "InitializerTesting", userOptions.get("token"));
 
 //        SessionFactory factory = DbUtil.getSessionFactory();
 //        Session session = factory.openSession();

src/main/java/nl/andrewlalis/git_api/GithubManager.java

@@ -429,7 +429,7 @@ public class GithubManager {
         builder.issues(hasIssues);
         builder.description(description);
         builder.gitignoreTemplate("Java");
-        builder.private_(isPrivate);
+        builder.private_(false); // TODO: Testing value of false. Production uses true.
         GHRepository repo = builder.create();
         logger.fine("Created repository: " + repo.getName());
         return repo;

src/main/java/nl/andrewlalis/ui/control/listeners/create_assignments_view/NextListener.java

@@ -28,10 +28,19 @@ public class NextListener extends ViewChangeListener {
     protected boolean beforeChange() {
         CreateAssignmentsView assignmentsView = (CreateAssignmentsView) this.previousView;
         String repoName = assignmentsView.getRepositoryName();
+
+        // Check that the repository name is legitimate.
+        if (repoName.trim().length() == 0) {
+            JOptionPane.showMessageDialog(this.previousView, "Repository name is empty.", "Error", JOptionPane.WARNING_MESSAGE);
+            return false;
+        }
+
+        // Check if the repository already exists.
         GithubManager manager = assignmentsView.getGithubManager();
         if (manager.repoExists(repoName)) {
             return true;
         } else {
+            // If not, we have to create it here.
             int reply = JOptionPane.showConfirmDialog(
                     assignmentsView,
                     "The repository you gave does not exist.\nWould you like to create it?",
@@ -39,7 +48,8 @@ public class NextListener extends ViewChangeListener {
                     JOptionPane.YES_NO_OPTION);
             if (reply == JOptionPane.YES_OPTION) {
                 try {
-                    assignmentsView.getGithubManager().setupAssignmentsRepo(repoName, "", this.getTeachingAssistantsTeamName());
+                    String description = JOptionPane.showInputDialog(assignmentsView, "Enter a description for the repository.", "Assignments Repository Description", JOptionPane.QUESTION_MESSAGE);
+                    assignmentsView.getGithubManager().setupAssignmentsRepo(repoName, description, this.getTeachingAssistantsTeamName());
                     return true;
                 } catch (IOException e) {
                     //e.printStackTrace();
@@ -52,6 +62,7 @@ public class NextListener extends ViewChangeListener {
         }
     }
 
+    // TODO: Replace this with a selector for an existing team of teaching assistants. Or configure this afterwards.
     private String getTeachingAssistantsTeamName() {
         String name = JOptionPane.showInputDialog(this.previousView, "Please enter (exactly) the name of Github team\nthat contains all teaching assistants.", "Select TA Team", JOptionPane.QUESTION_MESSAGE);
         return name;

src/main/java/nl/andrewlalis/ui/control/listeners/input_students_file_view/FileSelectListener.java

@@ -0,0 +1,63 @@
+package nl.andrewlalis.ui.control.listeners.input_students_file_view;
+
+import nl.andrewlalis.model.StudentTeam;
+import nl.andrewlalis.ui.view.InputStudentsFileView;
+import nl.andrewlalis.util.TeamGenerator;
+
+import javax.swing.*;
+import javax.swing.filechooser.FileFilter;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+
+/**
+ * Listens for when the user selects a CSV file to use to populate the teams list.
+ */
+public class FileSelectListener implements ActionListener {
+
+    private InputStudentsFileView fileView;
+
+    public FileSelectListener(InputStudentsFileView parent) {
+        this.fileView = parent;
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent actionEvent) {
+        // First check if the user has entered a valid team size.
+        if (this.fileView.getStudentsPerTeam() < 1) {
+            JOptionPane.showMessageDialog(this.fileView, "Invalid or missing team size.", "Error", JOptionPane.WARNING_MESSAGE);
+            return;
+        }
+
+        // It is assumed that the team size is valid, so the user can choose a file.
+        JFileChooser chooser = new JFileChooser();
+        chooser.setAcceptAllFileFilterUsed(false);
+        chooser.addChoosableFileFilter(new FileFilter() {
+            @Override
+            public boolean accept(File file) {
+                if (file.isDirectory()) {
+                    return true;
+                }
+                return file.getName().toLowerCase().endsWith(".csv");
+            }
+
+            @Override
+            public String getDescription() {
+                return "CSV Files (*.csv)";
+            }
+        });
+        int fileResponse = chooser.showOpenDialog(this.fileView);
+
+        if (fileResponse == JFileChooser.APPROVE_OPTION) {
+            int teamSize = this.fileView.getStudentsPerTeam();
+            try {
+                List<StudentTeam> teams = TeamGenerator.generateFromCSV(chooser.getSelectedFile().getAbsolutePath(), teamSize);
+                System.out.println(teams);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+}

src/main/java/nl/andrewlalis/ui/view/AbstractView.java

@@ -4,6 +4,8 @@ import nl.andrewlalis.git_api.GithubManager;
 
 import javax.swing.*;
 import java.awt.*;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * All views in the application will extend from this view, as a means of simplifying and organizing how visual
@@ -16,6 +18,11 @@ public abstract class AbstractView extends JFrame {
      */
     private GithubManager githubManager;
 
+    /**
+     * A list of views which are linked to this one via buttons in the component pane.
+     */
+    private List<AbstractView> childViews;
+
     /**
      * Initializes the view by packing the content pane as it is defined by any child, and setting some generic swing
      * values.
@@ -27,6 +34,7 @@ public abstract class AbstractView extends JFrame {
     AbstractView(String title, boolean startVisible, int defaultCloseOperation, Dimension preferredSize, GithubManager githubManager) {
         super(title);
         this.githubManager = githubManager;
+        this.childViews = new ArrayList<>();
         this.setContentPane(this.buildContentPane());
         this.setDefaultCloseOperation(defaultCloseOperation);
         if (preferredSize != null) {
@@ -52,6 +60,16 @@ public abstract class AbstractView extends JFrame {
         // Child classes can define custom behavior here.
     }
 
+    /**
+     * Extends the default expose behaviour by recursively disposing all views which are linked to this one.
+     */
+    public void dispose() {
+        for (AbstractView view : this.childViews) {
+            view.dispose();
+        }
+        super.dispose();
+    }
+
     public GithubManager getGithubManager() {
         return githubManager;
     }
@@ -69,4 +87,12 @@ public abstract class AbstractView extends JFrame {
         newPanel.setBorder(BorderFactory.createEmptyBorder(5, 2, 5, 2));
         return newPanel;
     }
+
+    /**
+     * Adds a view as linked to this one. That way, this view can be referenced elsewhere, even when hidden.
+     * @param view The view to link.
+     */
+    protected final void addChildView(AbstractView view) {
+        this.childViews.add(view);
+    }
 }

src/main/java/nl/andrewlalis/ui/view/CreateAssignmentsView.java

@@ -31,13 +31,20 @@ public class CreateAssignmentsView extends AbstractView {
     @Override
     protected JPanel buildContentPane() {
         JPanel contentPane = new JPanel();
-
         contentPane.setLayout(new BorderLayout());
+
+        JPanel fieldPanel = new JPanel();
+        fieldPanel.setLayout(new BoxLayout(fieldPanel, BoxLayout.PAGE_AXIS));
+
         this.repositoryNameField = new JTextField();
-        contentPane.add(this.generateTextFieldPanel("Repository name:", this.repositoryNameField), BorderLayout.CENTER);
+        fieldPanel.add(this.generateTextFieldPanel("Assignments repository name:", this.repositoryNameField));
+        contentPane.add(fieldPanel, BorderLayout.CENTER);
+
 
         JButton nextButton = new JButton("Next");
-        nextButton.addActionListener(new NextListener(this, new InputStudentsFileView(this.getGithubManager())));
+        InputStudentsFileView inputStudentsFileView = new InputStudentsFileView(this.getGithubManager());
+        this.addChildView(inputStudentsFileView);
+        nextButton.addActionListener(new NextListener(this, inputStudentsFileView));
         contentPane.add(nextButton, BorderLayout.SOUTH);
 
         return contentPane;

src/main/java/nl/andrewlalis/ui/view/InputStudentsFileView.java

@@ -1,6 +1,7 @@
 package nl.andrewlalis.ui.view;
 
 import nl.andrewlalis.git_api.GithubManager;
+import nl.andrewlalis.ui.control.listeners.input_students_file_view.FileSelectListener;
 
 import javax.swing.*;
 import java.awt.*;
@@ -10,6 +11,8 @@ import java.awt.*;
  */
 public class InputStudentsFileView extends AbstractView {
 
+    private JTextField studentsPerTeamField;
+
     InputStudentsFileView(GithubManager manager) {
         super("Input Students CSV",
                 false,
@@ -18,12 +21,27 @@ public class InputStudentsFileView extends AbstractView {
                 manager);
     }
 
+    public int getStudentsPerTeam() {
+        return Integer.parseUnsignedInt(this.studentsPerTeamField.getText());
+    }
+
     @Override
     protected JPanel buildContentPane() {
         JPanel contentPane = new JPanel(new BorderLayout());
 
+        JLabel helpLabel = new JLabel("Please select the CSV file containing student sign-up responses.");
+        contentPane.add(helpLabel, BorderLayout.NORTH);
+
+        JPanel inputPanel = new JPanel();
+        inputPanel.setLayout(new BoxLayout(inputPanel, BoxLayout.PAGE_AXIS));
+
         JButton selectFileButton = new JButton("Select File");
-        contentPane.add(selectFileButton, BorderLayout.CENTER);
+        this.studentsPerTeamField = new JTextField("2");
+        inputPanel.add(this.generateTextFieldPanel("How many students per team?", this.studentsPerTeamField));
+        selectFileButton.addActionListener(new FileSelectListener(this));
+        inputPanel.add(selectFileButton);
+
+        contentPane.add(inputPanel, BorderLayout.CENTER);
 
         JButton doneButton = new JButton("Done");
         contentPane.add(doneButton, BorderLayout.SOUTH);

src/main/java/nl/andrewlalis/ui/view/StartView.java

@@ -29,6 +29,18 @@ public class StartView extends AbstractView {
                 githubManager);
     }
 
+    /**
+     * Constructs the starting view, with pre-defined organization and access tokens.
+     * @param githubManager A reference to the github manager this application uses.
+     * @param organizationName The name of the organization.
+     * @param accessToken The access token from the user.
+     */
+    public StartView(GithubManager githubManager, String organizationName, String accessToken) {
+        this(githubManager);
+        this.organizationNameField.setText(organizationName);
+        this.accessTokenField.setText(accessToken);
+    }
+
     public String getOrganizationName() {
         return this.organizationNameField.getText();
     }
@@ -44,13 +56,15 @@ public class StartView extends AbstractView {
         JPanel infoInputPanel = new JPanel();
         infoInputPanel.setLayout(new BoxLayout(infoInputPanel, BoxLayout.PAGE_AXIS));
         this.organizationNameField = new JTextField();
-        infoInputPanel.add(this.generateTextFieldPanel("Organization name:", this.organizationNameField));
         this.accessTokenField = new JTextField();
+        infoInputPanel.add(this.generateTextFieldPanel("Organization name:", this.organizationNameField));
         infoInputPanel.add(this.generateTextFieldPanel("Access token:", this.accessTokenField));
 
         JPanel buttonsPanel = new JPanel();
         JButton assignmentsViewButton = new JButton("Start New Course");
-        assignmentsViewButton.addActionListener(new CreateAssignmentsRepoListener(this, new CreateAssignmentsView(this.getGithubManager())));
+        CreateAssignmentsView assignmentsView = new CreateAssignmentsView(this.getGithubManager());
+        this.addChildView(assignmentsView);
+        assignmentsViewButton.addActionListener(new CreateAssignmentsRepoListener(this, assignmentsView));
         JButton managementViewButton = new JButton("Manage Existing Course");
 
         buttonsPanel.add(assignmentsViewButton);