Added ability to load CSS files

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

@@ -3,7 +3,6 @@ package envoy.client.ui;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
-import java.nio.file.Paths;
 import java.util.Properties;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -20,11 +19,13 @@ import javafx.scene.layout.Pane;
 import javafx.stage.Stage;
 
 import envoy.client.data.*;
+import envoy.client.event.ThemeChangeEvent;
 import envoy.client.net.Client;
 import envoy.client.net.WriteProxy;
 import envoy.data.Message;
 import envoy.data.User;
 import envoy.data.User.UserStatus;
+import envoy.event.EventBus;
 import envoy.exception.EnvoyException;
 import envoy.util.EnvoyLog;
 
@@ -47,9 +48,6 @@ public final class Startup extends Application {
 	private Stage		stage;
 	private Scene		previousScene;
 
-	private final String[] CSSPaths = { "file://./src/main/resources/fxml/themes/base.css",
-			"file://./src/main/resources/fxml/themes/" + (settings.isUsingDefaultTheme() ? settings.getCurrentThemeName() : "custom") + ".css" };
-
 	private static final Settings		settings	= Settings.getInstance();
 	private static final ClientConfig	config		= ClientConfig.getInstance();
 	private static final Logger			logger		= EnvoyLog.getLogger(Startup.class);
@@ -62,17 +60,17 @@ public final class Startup extends Application {
 		this.stage = stage;
 		try {
 			// Load the configuration from client.properties first
-			Properties properties = new Properties();
+			final Properties properties = new Properties();
 			properties.load(Startup.class.getClassLoader().getResourceAsStream("client.properties"));
 			config.load(properties);
 
 			// Override configuration values with command line arguments
-			String[] args = getParameters().getRaw().toArray(new String[0]);
+			final String[] args = getParameters().getRaw().toArray(new String[0]);
 			if (args.length > 0) config.load(args);
 
 			// Check if all mandatory configuration values have been initialized
 			if (!config.isInitialized()) throw new EnvoyException("Configuration is not fully initialized");
-		} catch (Exception e) {
+		} catch (final Exception e) {
 			new Alert(AlertType.ERROR, "Error loading configuration values:\n" + e);
 			e.printStackTrace();
 			System.exit(1);
@@ -90,7 +88,7 @@ public final class Startup extends Application {
 			new Alert(AlertType.WARNING, "Ignoring local database.\nMessages will not be saved!").showAndWait();
 		} else try {
 			localDB = new PersistentLocalDB(new File(config.getHomeDirectory(), config.getLocalDB().getPath()));
-		} catch (IOException e3) {
+		} catch (final IOException e3) {
 			logger.log(Level.SEVERE, "Could not initialize local database", e3);
 			new Alert(AlertType.ERROR, "Could not initialize local database!\n" + e3).showAndWait();
 			System.exit(1);
@@ -111,9 +109,9 @@ public final class Startup extends Application {
 		try {
 			localDB.initializeUserStorage();
 			localDB.loadUserData();
-		} catch (FileNotFoundException e) {
+		} catch (final FileNotFoundException e) {
 			// The local database file has not yet been created, probably first login
-		} catch (Exception e) {
+		} catch (final Exception e) {
 			e.printStackTrace();
 			new Alert(AlertType.ERROR, "Error while loading local database: " + e + "\nChats will not be stored locally.").showAndWait();
 		}
@@ -140,8 +138,10 @@ public final class Startup extends Application {
 		Platform.runLater(() -> { ((ChatSceneController) loader.getController()).initializeData(this, localDB, client, writeProxy); });
 		stage.setTitle("Envoy");
 		stage.getIcons().add(new Image(getClass().getResourceAsStream("/icons/envoy_logo.png")));
-
 		stage.show();
+		// TODO: Add capability to change custom CSS. In case of switching to a default
+		// theme, no further action is required
+		EventBus.getInstance().register(ThemeChangeEvent.class, theme -> applyCSS());
 
 		// Relay unread messages from cache
 		if (cache != null && client.isOnline()) cache.relay();
@@ -154,8 +154,7 @@ public final class Startup extends Application {
 	 * @param fxmlLocation the location of the fxml file
 	 * @param layout       the layout to use
 	 * @param savePrevious if true, the previous stage will be stored in this
-	 *                     instance of Startup, else the variable storing it will
-	 *                     be
+	 *                     instance of Startup, else the variable storing it will be
 	 *                     set to null
 	 * @since Envoy Client v0.1-beta
 	 */
@@ -164,18 +163,16 @@ public final class Startup extends Application {
 			try {
 				// Clearing the loader so that a new Scene can be initialised
 				loader = new FXMLLoader();
-				var	rootNode	= loader.<T>load(getClass().getResourceAsStream(fxmlLocation));
-				var	scene		= new Scene(rootNode);
+				final var	rootNode	= loader.<T>load(getClass().getResourceAsStream(fxmlLocation));
+				final var	scene		= new Scene(rootNode);
 				previousScene = savePrevious ? stage.getScene() : null;
 				// Setting the visual appearance
-				scene.getStylesheets().addAll(CSSPaths);
-				System.out.println(Paths.get(".").toAbsolutePath().normalize().toString());
 				stage.setScene(scene);
+				applyCSS();
 				stage.show();
-				// return loader.getController();
-			} catch (IOException e) {
+			} catch (final IOException e) {
 				new Alert(AlertType.ERROR, "The screen could not be updated due to reasons. (...bad programming...)");
-				System.err.println("input: FXMLLocation: " + fxmlLocation + ", CSS paths: " + CSSPaths);
+				System.err.println("input: FXMLLocation: " + fxmlLocation);
 				e.printStackTrace();
 				logger.severe("Something happened (while loading the new scene from " + fxmlLocation + ")");
 			}
@@ -194,8 +191,9 @@ public final class Startup extends Application {
 			if (previousScene == null) throw new IllegalStateException("Someone tried restoring a null scene. (Something happened)");
 			else {
 				// switching previous and current
-				var temp = storeCurrent ? stage.getScene() : null;
+				final var temp = storeCurrent ? stage.getScene() : null;
 				stage.setScene(previousScene);
+				applyCSS();
 				previousScene = temp;
 				stage.show();
 			}
@@ -208,7 +206,6 @@ public final class Startup extends Application {
 	@Override
 	public void stop() throws Exception {
 		try {
-
 			// Save Settings and PersistentLocalDB on shutdown
 			logger.info("Closing connection...");
 			client.close();
@@ -216,14 +213,11 @@ public final class Startup extends Application {
 			logger.info("Saving local database and settings...");
 			localDB.save();
 			Settings.getInstance().save();
-		} catch (Exception e) {
+		} catch (final Exception e) {
 			logger.log(Level.SEVERE, "Unable to save local files", e);
 		}
 	}
 
-	@SuppressWarnings("javadoc")
-	public static void main(String[] args) { launch(args); }
-
 	/**
 	 * @return the controller of the current scene or a {@link NullPointerException}
 	 *         if there is none
@@ -235,21 +229,19 @@ public final class Startup extends Application {
 	}
 
 	/**
-	 * @return the CSSPaths
-	 * @since Envoy Client v0.1-beta
-	 */
-	public String[] getCSSPaths() { return CSSPaths; }
-
-	/**
-	 * Changes the currently displayed theme
+	 * Sets the CSS files used for each scene. Should be called when the theme
+	 * changes.
 	 *
 	 * @since Envoy Client v0.1-beta
 	 */
-	public void changeTheme() {
-		// the base.css file should never be changed during runtime
-		CSSPaths[1] = "file://.fxml/themes/" + (settings.isUsingDefaultTheme() ? settings.getCurrentThemeName() : "custom") + ".css";
-		var styleSheets = stage.getScene().getStylesheets();
-		styleSheets.remove(styleSheets.size() - 1);
-		styleSheets.add(CSSPaths[1]);
+	public void applyCSS() {
+		final var styleSheets = stage.getScene().getStylesheets();
+		styleSheets.clear();
+		styleSheets.add(getClass().getResource("/css/base.css").toExternalForm());
+		styleSheets.add(getClass().getResource("/css/" + (settings.isUsingDefaultTheme() ? settings.getCurrentThemeName() : "custom") + ".css")
+			.toExternalForm());
 	}
+
+	@SuppressWarnings("javadoc")
+	public static void main(String[] args) { launch(args); }
 }

src/main/resources/client.properties

@@ -1,3 +1,3 @@
-server=http://kske.feste-ip.net
-port=43315
+server=localhost
+port=8080
 localDB=.\\localDB

src/main/resources/css/base.css

@@ -0,0 +1,4 @@
+*{
+	-fx-font: 14pt "Serif";
+    -fx-background-color:#000000;
+    }

src/main/resources/fxml/themes/base.css

@@ -1,5 +0,0 @@
-.root{
-	-fx-font: 200pt "Serif";
-	--background=#00FF00;
-	background: var(--background);
-}