Refactor hard-coded colours into ThemeSupport

source/net/filebot/Main.java

@@ -8,6 +8,7 @@ import static net.filebot.Logging.*;
 import static net.filebot.MediaTypes.*;
 import static net.filebot.Settings.*;
 import static net.filebot.ui.GettingStartedUtil.*;
+import static net.filebot.ui.ThemeSupport.*;
 import static net.filebot.util.FileUtilities.*;
 import static net.filebot.util.FileUtilities.getChildren;
 import static net.filebot.util.XPathUtilities.*;
@@ -216,7 +217,7 @@ public class Main {
 
 	private static void startUserInterface(ArgumentBean args) {
 		// use native LaF an all platforms
-		setSystemLookAndFeel();
+		setTheme(Theme.System);
 
 		// start standard frame or single panel frame
 		PanelBuilder[] panels = args.getPanelBuilders();

source/net/filebot/ui/ThemeSupport.java

@@ -1,9 +1,18 @@
 package net.filebot.ui;
 
 import static com.bulenkov.iconloader.util.ColorUtil.*;
+import static net.filebot.Logging.*;
 
 import java.awt.Color;
 import java.awt.LinearGradientPaint;
+import java.util.logging.Level;
+
+import javax.swing.UIManager;
+import javax.swing.plaf.metal.MetalLookAndFeel;
+import javax.swing.plaf.metal.OceanTheme;
+import javax.swing.plaf.nimbus.NimbusLookAndFeel;
+
+import com.bulenkov.darcula.DarculaLaf;
 
 import net.filebot.util.ui.GradientStyle;
 import net.filebot.util.ui.notification.SeparatorBorder;
@@ -27,16 +36,78 @@ public class ThemeSupport {
 	}
 
 	public static Color getColor(int rgba) {
-		if (dark) {
+		return theme.getColor(rgba);
+	}
+
+	private static Theme theme = Theme.System;
+
+	public static void setTheme(Theme t) {
+		theme = t;
+
+		try {
+			theme.setLookAndFeel();
+		} catch (Exception e) {
+			log.log(Level.SEVERE, e, message("Failed to set LaF", t));
+		}
+	}
+
+	public enum Theme {
+
+		System {
+
+			@Override
+			public void setLookAndFeel() throws Exception {
+				UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+			}
+		},
+
+		CrossPlatform {
+
+			@Override
+			public void setLookAndFeel() throws Exception {
+				UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
+			}
+		},
+
+		Darcula {
+
+			@Override
+			public void setLookAndFeel() throws Exception {
+				UIManager.setLookAndFeel(new DarculaLaf());
+			}
+
+			@Override
+			public Color getColor(int rgba) {
 				return getDarkColor(new Color(rgba));
 			}
+
+			public Color getDarkColor(Color c) {
+				return isDark(c) ? c : shift(c, 0.2);
+			}
+		},
+
+		Nimbus {
+
+			@Override
+			public void setLookAndFeel() throws Exception {
+				UIManager.setLookAndFeel(new NimbusLookAndFeel());
+			}
+		},
+
+		Metal {
+
+			@Override
+			public void setLookAndFeel() throws Exception {
+				MetalLookAndFeel.setCurrentTheme(new OceanTheme());
+				UIManager.setLookAndFeel(new MetalLookAndFeel());
+			}
+		};
+
+		public Color getColor(int rgba) {
 			return new Color(rgba);
 		}
 
-	public static Color getDarkColor(Color c) {
+		public abstract void setLookAndFeel() throws Exception;
-		return isDark(c) ? c : shift(c, 0.2);
 	}
 
-	private static boolean dark = false;
-
 }

source/net/filebot/util/ui/SwingUI.java

@@ -53,7 +53,6 @@ import javax.swing.SwingConstants;
 import javax.swing.SwingUtilities;
 import javax.swing.SwingWorker;
 import javax.swing.Timer;
-import javax.swing.UIManager;
 import javax.swing.event.MenuEvent;
 import javax.swing.event.MenuListener;
 import javax.swing.event.MouseInputListener;
@@ -67,30 +66,6 @@ import net.filebot.Settings;
 
 public final class SwingUI {
 
-	public static void setNimbusLookAndFeel() {
-		try {
-			UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
-		} catch (Exception e) {
-			log.log(Level.SEVERE, "Failed to set Nimbus LaF", e);
-		}
-	}
-
-	public static void setDarculaLookAndFeel() {
-		try {
-			UIManager.setLookAndFeel("com.bulenkov.darcula.DarculaLaf");
-		} catch (Exception e) {
-			log.log(Level.SEVERE, "Failed to set Nimbus LaF", e);
-		}
-	}
-
-	public static void setSystemLookAndFeel() {
-		try {
-			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
-		} catch (Exception e) {
-			log.log(Level.SEVERE, "Failed to set System LaF", e);
-		}
-	}
-
 	public static void openURI(String uri) {
 		try {
 			if (Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) {