Implemented theme serialization to a file

.gitignore

@@ -1,2 +1,3 @@
 /target/
-/localDB/
+/localDB/
+/themes.ser

src/main/java/envoy/client/Settings.java

@@ -1,12 +1,17 @@
 package envoy.client;
 
 import java.awt.Color;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.prefs.Preferences;
 
 import envoy.client.ui.Theme;
-import envoy.schema.User;
 
 /**
  * Project: <strong>envoy-client</strong><br>
@@ -15,19 +20,32 @@ import envoy.schema.User;
  * 
  * @author Leon Hofmeister
  * @author Maximilian K&auml;fer
+ * @author Kai S. K. Engelbart
  * @since Envoy v0.2-alpha
  */
 public class Settings {
 
+	// Actual settings accessible by the rest of the application
 	private String				username;
 	private String				email;
 	private boolean				enterToSend	= true;
-	private Map<String, Theme>	themes		= new HashMap<>();
+	private Map<String, Theme>	themes;
+	private String				currentTheme;
 
-	private String currentTheme;
+	/**
-	// private Image profilePic;
+	 * Required to save the settings.
-	private static Settings	settings;
+	 */
-	private Preferences		prefs	= Preferences.userNodeForPackage(Settings.class);
+	private Preferences prefs = Preferences.userNodeForPackage(Settings.class);
+
+	/**
+	 * User-defined themes are stored inside this file.
+	 */
+	private File themeFile = new File("themes.ser");
+
+	/**
+	 * Singleton instance of this class.
+	 */
+	private static Settings settings = new Settings();
 
 	/**
 	 * The way to instantiate the settings.
@@ -35,7 +53,7 @@ public class Settings {
 	 * 
 	 * @since Envoy v0.2-alpha
 	 */
-	private Settings() {}
+	private Settings() { load(); }
 
 	/**
 	 * This method is used to ensure that there is only one instance of Settings.
@@ -43,54 +61,44 @@ public class Settings {
 	 * @return the instance of Settings
 	 * @since Envoy v0.2-alpha
 	 */
-	public static Settings getInstance() {
+	public static Settings getInstance() { return settings; }
-		if (settings == null) {
+
-			settings = new Settings();
+	@SuppressWarnings("unchecked")
-			settings.load();
+	private void load() {
+		setUsername(prefs.get("username", ""));
+		setEmail(prefs.get("email", ""));
+		setEnterToSend(prefs.getBoolean("enterToSend", true));
+		setCurrentTheme(prefs.get("theme", "dark"));
+
+		// Load themes from theme file
+		try (ObjectInputStream in = new ObjectInputStream(new FileInputStream(themeFile))) {
+			Object obj = in.readObject();
+			if(obj instanceof HashMap) themes = (Map<String, Theme>) obj;
+		} catch (IOException | ClassNotFoundException e) {
+			themes = new HashMap<>();
+			e.printStackTrace();
 		}
-		return settings;
+
+		// Load standard themes not defined in the themes file
+		themes.put("dark",
+				new Theme("dark", Color.black, Color.darkGray, Color.white, Color.blue, Color.white, Color.orange, Color.blue, Color.white,
+						Color.white));
+		themes.put("light",
+				new Theme("light", new Color(235, 235, 235), Color.white, Color.white, Color.darkGray, Color.black, Color.orange, Color.darkGray,
+						Color.black, Color.black));
 	}
 
-	public void load() {
+	public void save() throws IOException{
-		settings.setUsername(prefs.get("username", ""));
+		prefs.put("username", getUsername());
-		settings.setEmail(prefs.get("email", ""));
+		prefs.put("email", getEmail());
-		settings.setEnterToSend(prefs.getBoolean("enterToSend", true));
-		// currentTheme = "dark"; Activate once if NullPointerException on currentTheme
-		// and change theme to dark or white in Settings
-		settings.setCurrentTheme(prefs.get("theme", "dark"));
-	}
-
-	public void save() {
-		prefs.put("username", settings.getUsername());
-		prefs.put("email", settings.getEmail());
 		prefs.put("theme", currentTheme);
-		System.out.println(currentTheme);
+		prefs.putBoolean("enterToSend", isEnterToSend());
-		prefs.putBoolean("enterToSend", settings.isEnterToSend());
+		
-		// TODO: override themes map
+		// Save themes to theme file
-
+		themeFile.createNewFile();
-	}
+		try(ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(themeFile))) {
-
+			out.writeObject(themes);
-	public void firstSave(User user) {
+		}
-
-		// TODO: load themes
-
-		settings.getThemes()
-			.put("dark",
-					new Theme("dark", Color.black, Color.darkGray, Color.white, Color.blue, Color.white, Color.orange,
-							Color.blue, Color.white, Color.white));
-		settings.getThemes()
-			.put("light",
-					new Theme("light", new Color(235, 235, 235), Color.white, Color.white, Color.darkGray, Color.black,
-							Color.orange, Color.darkGray, Color.black, Color.black));
-
-
-
-
-
-		prefs.put("username", user.getName());
-		// prefs.put("email", user.getEmail());
-		// prefs.putBoolean("darkMode", true);
-		// prefs.putBoolean("enterToSend", true);
 	}
 
 	public void addNewThemeToMap(Theme theme) {
@@ -103,13 +111,13 @@ public class Settings {
 	public void setCurrentTheme(String themeName) { currentTheme = themeName; }
 
 	/**
-	 * @return the username
+	 * @return the user name
 	 * @since Envoy v0.2-alpha
 	 */
 	public String getUsername() { return username; }
 
 	/**
-	 * @param username the username to set
+	 * @param username the user name to set
 	 * @since Envoy v0.2-alpha
 	 */
 	public void setUsername(String username) { this.username = username; }
@@ -145,18 +153,4 @@ public class Settings {
 	public Map<String, Theme> getThemes() { return themes; }
 
 	public void setThemes(Map<String, Theme> themes) { this.themes = themes; }
-
+}
-	// /**
-	// * @return the profilePic
-	// * @since Envoy v0.2-alpha
-	// */
-	// public Image getProfilePic() { return profilePic; }
-	//
-	// /**
-	// * @param profilePic the profilePic to set
-	// * @since Envoy v0.1-alpha
-	// */
-	// public void setProfilePic(Image profilePic) { this.profilePic = profilePic; }
-
-
-}

src/main/java/envoy/client/ui/ChatWindow.java

@@ -81,6 +81,7 @@ public class ChatWindow extends JFrame {
 			public void windowClosing(WindowEvent e) {
 				try {
 					localDB.saveToLocalDB();
+					Settings.getInstance().save();
 				} catch (IOException e1) {
 					e1.printStackTrace();
 					System.err.println("Could not save localDB");

src/main/java/envoy/client/ui/SettingsScreen.java

@@ -36,6 +36,7 @@ import envoy.client.Settings;
  * 
  * @author Leon Hofmeister
  * @author Maximilian Käfer
+ * @author Kai S. K. Engelbart
  */
 public class SettingsScreen extends JDialog {
 
@@ -62,10 +63,10 @@ public class SettingsScreen extends JDialog {
 	private JButton		cancelButton	= new JButton("Cancel");
 	private static int	space			= 5;
 
-	private boolean colorChanged = false;
+	private boolean	colorChanged	= false;
+	private Theme	temporaryTheme;
 
-	private Theme					temporaryTheme;
+	private static SettingsScreen settingsScreen;
-	private static SettingsScreen	settingsScreen;
 
 	// TODO: Add a JPanel with all the Information necessary:
 	// change (Picture,Username, Email, Password) and toggle(light/dark mode,
@@ -78,8 +79,6 @@ public class SettingsScreen extends JDialog {
 	 * @since Envoy v0.1-alpha
 	 */
 	public static void open() {
-
-		// UIColors.getInstance(Settings.getInstance().isDarkMode());
 		settingsScreen = new SettingsScreen();
 		settingsScreen.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
 		settingsScreen.setModal(true);
@@ -87,7 +86,7 @@ public class SettingsScreen extends JDialog {
 	}
 
 	/**
-	 * Builds the settings screen.<br>
+	 * Builds the settings screen.
 	 * 
 	 * @since Envoy v0.1-alpha
 	 */
@@ -101,9 +100,9 @@ public class SettingsScreen extends JDialog {
 
 			createNewThemeButton.setEnabled(false);
 
-			temporaryTheme = new Theme("temporaryTheme",
+			temporaryTheme = new Theme("temporaryTheme", Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()));
-					Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()));
+
-			// ContentPane------------------------------------------------------
+			// Content pane
 			GridBagLayout gbl_contentPanel = new GridBagLayout();
 
 			gbl_contentPanel.columnWidths	= new int[] { 1, 1 };
@@ -155,7 +154,7 @@ public class SettingsScreen extends JDialog {
 
 			contentPanel.add(options, gbc_optionsList);
 
-			// ThemeContent ---
+			// Theme content
 
 			gbc_themeContent		= new GridBagConstraints();
 			gbc_themeContent.fill	= GridBagConstraints.BOTH;
@@ -166,8 +165,6 @@ public class SettingsScreen extends JDialog {
 
 			GridBagLayout gbl_themeLayout = new GridBagLayout();
 
-			// themeContent.setSelectionForeground(theme.getUserNameColor());
-			// themeContent.setSelectionBackground(theme.getSelectionColor());
 			themeContent.setForeground(theme.getUserNameColor());
 			themeContent.setBackground(theme.getCellColor());
 
@@ -181,7 +178,6 @@ public class SettingsScreen extends JDialog {
 			themes.setBackground(theme.getUserNameColor());
 			themes.setForeground(theme.getBackgroundColor());
 			themes.setSelectedItem(Settings.getInstance().getCurrentTheme());
-			// themes.setBorder(null);
 
 			themes.addItemListener(new ItemListener() {
 
@@ -191,7 +187,6 @@ public class SettingsScreen extends JDialog {
 					System.out.println(selectedValue);
 					selectedTheme = Settings.getInstance().getThemes().get(selectedValue);
 				}
-
 			});
 
 			GridBagConstraints gbc_themes = new GridBagConstraints();
@@ -206,24 +201,9 @@ public class SettingsScreen extends JDialog {
 			colorsPanel.setLayout((LayoutManager) new BoxLayout(colorsPanel, BoxLayout.Y_AXIS));
 			colorsPanel.setAlignmentX(Component.LEFT_ALIGNMENT);
 
+			buildCustomizeElement(new JPanel(), new JButton(), new JTextPane(), theme, theme.getBackgroundColor(), "Background", 1);
+			buildCustomizeElement(new JPanel(), new JButton(), new JTextPane(), theme, theme.getCellColor(), "Cells", 2);
 			buildCustomizeElement(new JPanel(),
-
-					new JButton(),
-					new JTextPane(),
-					theme,
-					theme.getBackgroundColor(),
-					"Background",
-					1);
-			buildCustomizeElement(new JPanel(),
-
-					new JButton(),
-					new JTextPane(),
-					theme,
-					theme.getCellColor(),
-					"Cells",
-					2);
-			buildCustomizeElement(new JPanel(),
-
 					new JButton(),
 					new JTextPane(),
 					theme,
@@ -231,53 +211,17 @@ public class SettingsScreen extends JDialog {
 					"Interactable Foreground",
 					3);
 			buildCustomizeElement(new JPanel(),
-
 					new JButton(),
 					new JTextPane(),
 					theme,
 					theme.getInteractableBackgroundColor(),
 					"Interactable Background",
 					4);
-			buildCustomizeElement(new JPanel(),
+			buildCustomizeElement(new JPanel(), new JButton(), new JTextPane(), theme, theme.getMessageColorChat(), "Messages Chat", 5);
-
+			buildCustomizeElement(new JPanel(), new JButton(), new JTextPane(), theme, theme.getDateColorChat(), "Date Chat", 6);
-					new JButton(),
+			buildCustomizeElement(new JPanel(), new JButton(), new JTextPane(), theme, theme.getSelectionColor(), "Selection", 7);
-					new JTextPane(),
+			buildCustomizeElement(new JPanel(), new JButton(), new JTextPane(), theme, theme.getTypingMessageColor(), "Typing Message", 8);
-					theme,
+			buildCustomizeElement(new JPanel(), new JButton(), new JTextPane(), theme, theme.getUserNameColor(), "User Names", 9);
-					theme.getMessageColorChat(),
-					"Messages Chat",
-					5);
-			buildCustomizeElement(new JPanel(),
-
-					new JButton(),
-					new JTextPane(),
-					theme,
-					theme.getDateColorChat(),
-					"Date Chat",
-					6);
-			buildCustomizeElement(new JPanel(),
-
-					new JButton(),
-					new JTextPane(),
-					theme,
-					theme.getSelectionColor(),
-					"Selection",
-					7);
-			buildCustomizeElement(new JPanel(),
-
-					new JButton(),
-					new JTextPane(),
-					theme,
-					theme.getTypingMessageColor(),
-					"Typing Message",
-					8);
-			buildCustomizeElement(new JPanel(),
-
-					new JButton(),
-					new JTextPane(),
-					theme,
-					theme.getUserNameColor(),
-					"User Names",
-					9);
 
 			GridBagConstraints gbc_colorsPanel = new GridBagConstraints();
 			gbc_colorsPanel.fill		= GridBagConstraints.HORIZONTAL;
@@ -298,16 +242,14 @@ public class SettingsScreen extends JDialog {
 					String s = JOptionPane.showInputDialog("Enter a name for the new theme");
 					System.out.println(s);
 					Settings.getInstance()
-						.addNewThemeToMap(new Theme(s, temporaryTheme.getBackgroundColor(),
+						.addNewThemeToMap(new Theme(s, temporaryTheme.getBackgroundColor(), temporaryTheme.getCellColor(),
-								temporaryTheme.getCellColor(), temporaryTheme.getInteractableForegroundColor(),
+								temporaryTheme.getInteractableForegroundColor(), temporaryTheme.getInteractableBackgroundColor(),
-								temporaryTheme.getInteractableBackgroundColor(), temporaryTheme.getMessageColorChat(),
+								temporaryTheme.getMessageColorChat(), temporaryTheme.getDateColorChat(), temporaryTheme.getSelectionColor(),
-								temporaryTheme.getDateColorChat(), temporaryTheme.getSelectionColor(),
 								temporaryTheme.getTypingMessageColor(), temporaryTheme.getUserNameColor()));
 					themeArray							= Arrays.copyOf(themeArray, themeArray.length + 1);
 					themeArray[themeArray.length - 1]	= Settings.getInstance().getThemes().get(s).getThemeName();
 
-					temporaryTheme = new Theme("temporaryTheme",
+					temporaryTheme = new Theme("temporaryTheme", Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()));
-							Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()));
 
 					createNewThemeButton.setEnabled(false);
 					themes.addItem(themeArray[themeArray.length - 1]);
@@ -421,27 +363,18 @@ public class SettingsScreen extends JDialog {
 
 	}
 
-	public void updateColorVariables(String key) {
+	private void updateColorVariables(String key) {
 		Theme theme = Settings.getInstance().getThemes().get(key);
 
 		temporaryTheme = new Theme("temporaryTheme",
 				Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()).getBackgroundColor(),
 				Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()).getCellColor(),
-				Settings.getInstance()
+				Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()).getInteractableForegroundColor(),
-					.getThemes()
+				Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()).getInteractableBackgroundColor(),
-					.get(Settings.getInstance().getCurrentTheme())
-					.getInteractableForegroundColor(),
-				Settings.getInstance()
-					.getThemes()
-					.get(Settings.getInstance().getCurrentTheme())
-					.getInteractableBackgroundColor(),
 				Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()).getMessageColorChat(),
 				Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()).getDateColorChat(),
 				Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()).getSelectionColor(),
-				Settings.getInstance()
+				Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()).getTypingMessageColor(),
-					.getThemes()
-					.get(Settings.getInstance().getCurrentTheme())
-					.getTypingMessageColor(),
 				Settings.getInstance().getThemes().get(Settings.getInstance().getCurrentTheme()).getUserNameColor());
 
 		colorsPanel.removeAll();
@@ -526,10 +459,9 @@ public class SettingsScreen extends JDialog {
 		colorsPanel.add(createNewThemeButton, gbc_createNewTheme);
 	}
 
-	public void setContent(JPanel content, GridBagConstraints layout) { contentPanel.add(content, layout); }
+	private void setContent(JPanel content, GridBagConstraints layout) { contentPanel.add(content, layout); }
 
-	public void buildCustomizeElement(JPanel panel, JButton button, JTextPane textPane, Theme theme, Color color,
+	private void buildCustomizeElement(JPanel panel, JButton button, JTextPane textPane, Theme theme, Color color, String name, int yIndex) {
-			String name, int yIndex) {
 		textPane.setFont(new Font("Arial", Font.PLAIN, 14));
 		textPane.setBackground(theme.getBackgroundColor());
 		textPane.setForeground(theme.getUserNameColor());

src/main/java/envoy/client/ui/Startup.java

@@ -21,6 +21,7 @@ import envoy.exception.EnvoyException;
  * 
  * @author Leon Hofmeister
  * @author Maximilian Käfer
+ * @author Kai S. K. Engelbart
  * @since Envoy v0.1-alpha
  */
 public class Startup {
@@ -61,7 +62,7 @@ public class Startup {
 					"Local DB error",
 					JOptionPane.WARNING_MESSAGE);
 		}
-		Settings.getInstance().firstSave(client.getSender());
+		Settings.getInstance().setUsername(userName);
 		
 		EventQueue.invokeLater(() -> {
 			try {