Fix bug displaying the double amount of unread messages

Additionally remove ChangeHandlers in SettingsItem and show
StatusTrayIcon whenever supported

client/src/main/java/envoy/client/data/LocalDB.java

@@ -147,6 +147,7 @@ public final class LocalDB implements EventListener {
 			throw new IllegalStateException("Client user is null, cannot initialize user storage");
 		userFile = new File(dbDir, user.getID() + ".db");
 		try (var in = new ObjectInputStream(new FileInputStream(userFile))) {
+			Chat.getTotalUnreadAmount().set(0);
 			chats = FXCollections.observableList((List<Chat>) in.readObject());
 
 			// Some chats have changed and should not be overwritten by the saved values

client/src/main/java/envoy/client/data/SettingsItem.java

@@ -1,7 +1,6 @@
 package envoy.client.data;
 
 import java.io.Serializable;
-import java.util.function.Consumer;
 
 import javax.swing.JComponent;
 
@@ -17,8 +16,6 @@ public final class SettingsItem<T> implements Serializable {
 	private T		value;
 	private String	userFriendlyName, description;
 
-	private transient Consumer<T> changeHandler;
-
 	private static final long serialVersionUID = 1L;
 
 	/**
@@ -52,8 +49,6 @@ public final class SettingsItem<T> implements Serializable {
 	 * @since Envoy Client v0.3-alpha
 	 */
 	public void set(T value) {
-		if (changeHandler != null && value != this.value)
-			changeHandler.accept(value);
 		this.value = value;
 	}
 
@@ -82,16 +77,4 @@ public final class SettingsItem<T> implements Serializable {
 	 * @since Envoy Client v0.3-alpha
 	 */
 	public void setDescription(String description) { this.description = description; }
-
-	/**
-	 * Sets a {@code ChangeHandler} for this {@link SettingsItem}. It will be invoked with the
-	 * current value once during the registration and every time when the value changes.
-	 *
-	 * @param changeHandler the changeHandler to set
-	 * @since Envoy Client v0.3-alpha
-	 */
-	public void setChangeHandler(Consumer<T> changeHandler) {
-		this.changeHandler = changeHandler;
-		changeHandler.accept(value);
-	}
 }

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

@@ -237,17 +237,9 @@ public final class Startup extends Application {
 					e.consume();
 			});
 
-		if (StatusTrayIcon.isSupported()) {
-
 		// Initialize status tray icon
-			final var trayIcon = new StatusTrayIcon(stage);
-			Settings.getInstance().getItems().get("hideOnClose").setChangeHandler(c -> {
-				if ((Boolean) c)
-					trayIcon.show();
-				else
-					trayIcon.hide();
-			});
-		}
+		if (StatusTrayIcon.isSupported())
+			new StatusTrayIcon(stage).show();
 
 		// Start auto save thread
 		localDB.initAutoSave();

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

@@ -16,7 +16,7 @@ import envoy.data.Message;
 import envoy.data.User.UserStatus;
 
 import envoy.client.data.*;
-import envoy.client.event.OwnStatusChange;
+import envoy.client.event.*;
 import envoy.client.helper.ShutdownHelper;
 import envoy.client.util.*;
 
@@ -82,10 +82,7 @@ public final class StatusTrayIcon implements EventListener {
 
 		// Adding the logout menu item
 		final var logoutMenuItem = new MenuItem("Logout");
-		logoutMenuItem.addActionListener(evt -> {
-			hide();
-			Platform.runLater(UserUtil::logout);
-		});
+		logoutMenuItem.addActionListener(evt -> Platform.runLater(UserUtil::logout));
 		popup.add(logoutMenuItem);
 
 		// Adding the status change items
@@ -137,6 +134,7 @@ public final class StatusTrayIcon implements EventListener {
 	 *
 	 * @since Envoy Client v0.2-beta
 	 */
+	@Event(eventType = Logout.class)
 	public void hide() {
 		SystemTray.getSystemTray().remove(trayIcon);
 	}

client/src/main/java/envoy/client/ui/settings/GeneralSettingsPane.java

@@ -27,15 +27,15 @@ public final class GeneralSettingsPane extends SettingsPane {
 		final var settingsItems = settings.getItems();
 
 		// Add hide on close if supported
-		if (StatusTrayIcon.isSupported()) {
 		final var	hideOnCloseCheckbox	=
 			new SettingsCheckbox((SettingsItem<Boolean>) settingsItems.get("hideOnClose"));
-			final var	hideOnCloseTooltip	= new Tooltip(
-				"If selected, Envoy will still be present in the task bar when closed.");
+		final var	hideOnCloseTooltip	= new Tooltip(StatusTrayIcon.isSupported()
+			? "If selected, Envoy will still be present in the task bar when closed."
+			: "status tray icon is not supported on your system.");
 		hideOnCloseTooltip.setWrapText(true);
 		hideOnCloseCheckbox.setTooltip(hideOnCloseTooltip);
+		hideOnCloseCheckbox.setDisable(!StatusTrayIcon.isSupported());
 		getChildren().add(hideOnCloseCheckbox);
-		}
 
 		final var	enterToSendCheckbox	=
 			new SettingsCheckbox((SettingsItem<Boolean>) settingsItems.get("enterToSend"));