Added api to get currently available themes.

core/src/main/java/com/github/weisj/darklaf/LafManager.java

@@ -26,8 +26,7 @@ package com.github.weisj.darklaf;
 import com.github.weisj.darklaf.platform.DecorationsHandler;
 import com.github.weisj.darklaf.platform.ThemePreferencesHandler;
 import com.github.weisj.darklaf.task.DefaultsAdjustmentTask;
-import com.github.weisj.darklaf.theme.DarculaTheme;
-import com.github.weisj.darklaf.theme.Theme;
+import com.github.weisj.darklaf.theme.*;
 import com.github.weisj.darklaf.theme.event.ThemePreferenceListener;
 import com.github.weisj.darklaf.theme.info.DefaultThemeProvider;
 import com.github.weisj.darklaf.theme.info.PreferredThemeStyle;
@@ -38,8 +37,8 @@ import java.awt.*;
 import java.io.IOException;
 import java.io.InputStream;
 import java.lang.reflect.InvocationTargetException;
-import java.util.Collection;
-import java.util.HashSet;
+import java.util.List;
+import java.util.*;
 import java.util.logging.Level;
 import java.util.logging.LogManager;
 import java.util.logging.Logger;
@@ -54,10 +53,18 @@ public final class LafManager {
     private static ThemeProvider themeProvider;
     private static Theme theme;
     private static boolean logEnabled = false;
+    private static final List<Theme> registeredThemes = new ArrayList<>();
     private static final Collection<DefaultsAdjustmentTask> uiDefaultsTasks = new HashSet<>();
 
     static {
         enableLogging(true);
+        registerTheme(new IntelliJTheme(),
+                      new DarculaTheme(),
+                      new SolarizedLightTheme(),
+                      new SolarizedDarkTheme(),
+                      new OneDarkTheme(),
+                      new HighContrastLightTheme(),
+                      new HighContrastDarkTheme());
     }
 
     /**
@@ -205,6 +212,50 @@ public final class LafManager {
         return getThemeProvider().getTheme(style);
     }
 
+    /**
+     * Register all themes in array. Registered themes are returned in {@link #getRegisteredThemes()}.
+     *
+     * @param themes the themes to register.
+     */
+    public static void registerTheme(final Theme... themes) {
+        if (themes == null) return;
+        for (Theme theme : themes) {
+            registerTheme(theme);
+        }
+    }
+
+    /**
+     * Register a theme. Registered themes are returned in {@link #getRegisteredThemes()}.
+     *
+     * @param theme the theme to register.
+     */
+    public static void registerTheme(final Theme theme) {
+        registeredThemes.add(theme);
+    }
+
+    /**
+     * Remove a register a theme. Registered themes are returned in {@link #getRegisteredThemes()}.
+     *
+     * @param theme the theme to register.
+     */
+    public static void unregisterTheme(final Theme theme) {
+        registeredThemes.remove(theme);
+    }
+
+    /**
+     * Get all currently registered themes.
+     *
+     * @return all themes currently registered as array.
+     */
+    public static Theme[] getRegisteredThemes() {
+        Theme[] themes = registeredThemes.toArray(new Theme[0]);
+        Arrays.sort(themes);
+        return themes;
+    }
+
+    public static ComboBoxModel<Theme> getThemeComboBoxModel() {
+        return new DefaultComboBoxModel<>(getRegisteredThemes());
+    }
 
     /**
      * Get the current theme. This method will never return null even if the LaF isn#t currently installed.
@@ -259,9 +310,9 @@ public final class LafManager {
     }
 
     /**
-     * Reloads the icon theme. Forces icons to update their colors.
+     * Reloads the theme. Forces all properties to be reloaded.
      */
-    public static void reloadIconTheme() {
+    public static void reloadTheme() {
         try {
             setTheme(getTheme().getClass().getDeclaredConstructor().newInstance());
         } catch (InstantiationException

core/src/test/java/documentation/CreateUITable.java

@@ -29,7 +29,7 @@ import com.github.weisj.darklaf.PropertyLoader;
 import com.github.weisj.darklaf.components.border.DropShadowBorder;
 import com.github.weisj.darklaf.icons.DarkSVGIcon;
 import com.github.weisj.darklaf.icons.EmptyIcon;
-import com.github.weisj.darklaf.theme.*;
+import com.github.weisj.darklaf.theme.Theme;
 import com.github.weisj.darklaf.util.*;
 import com.kitfox.svg.app.beans.SVGIcon;
 import defaults.SampleRenderer;
@@ -61,12 +61,7 @@ public class CreateUITable {
     private UIDefaults currentDefaults;
 
     public static void main(final String[] args) throws IOException {
-        for (Theme theme : new Theme[]{
-            new IntelliJTheme(),
-            new DarculaTheme(),
-            new SolarizedLightTheme(),
-            new SolarizedDarkTheme()
-        }) {
+        for (Theme theme : LafManager.getRegisteredThemes()) {
             createThemeDefaultsPage(theme);
         }
     }

core/src/test/java/icon/IconDemo.java

@@ -80,7 +80,7 @@ public class IconDemo implements ComponentDemo {
 
     private static void updateThemedIconColor(final Color c) {
         UIManager.put("TestIcon.color", c);
-        LafManager.reloadIconTheme();
+        LafManager.reloadTheme();
     }
 
     @Override

core/src/test/java/ui/ComponentDemo.java

@@ -24,7 +24,7 @@
 package ui;
 
 import com.github.weisj.darklaf.LafManager;
-import com.github.weisj.darklaf.theme.*;
+import com.github.weisj.darklaf.theme.Theme;
 import com.github.weisj.darklaf.theme.info.ColorToneRule;
 import com.github.weisj.darklaf.theme.info.ContrastRule;
 import com.github.weisj.darklaf.theme.info.PreferredThemeStyle;
@@ -75,13 +75,7 @@ public interface ComponentDemo {
         String currentThemeName = LafManager.getTheme().getClass().getSimpleName();
         JMenu menu = new JMenu("Theme");
         ButtonGroup bg = new ButtonGroup();
-        for (Theme theme : new Theme[]{new DarculaTheme(),
-                                       new IntelliJTheme(),
-                                       new SolarizedLightTheme(),
-                                       new SolarizedDarkTheme(),
-                                       new OneDarkTheme(),
-                                       new HighContrastLightTheme(),
-                                       new HighContrastDarkTheme()}) {
+        for (Theme theme : LafManager.getRegisteredThemes()) {
             createThemeItem(currentThemeName, menu, bg, theme);
         }
         return menu;

theme/src/main/java/com/github/weisj/darklaf/theme/Theme.java

@@ -36,6 +36,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
+import java.util.Comparator;
 import java.util.Properties;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -43,7 +44,7 @@ import java.util.logging.Logger;
 /**
  * @author Jannis Weis
  */
-public abstract class Theme {
+public abstract class Theme implements Comparable<Theme>, Comparator<Theme> {
     private static final Logger LOGGER = Logger.getLogger(Theme.class.getName());
     private FontSizeRule fontSizeRule;
 
@@ -326,4 +327,20 @@ public abstract class Theme {
         this.fontSizeRule = fontSizeRule;
     }
 
+    @Override
+    public int compareTo(final Theme o) {
+        if (o == null) return 1;
+        int stringComp = getName().compareTo(o.getName());
+        int contrastCompare = Boolean.compare(isHighContrast(this), isHighContrast(o));
+        int toneCompare = Boolean.compare(isDark(this), isDark(o));
+        if (contrastCompare != 0) return contrastCompare;
+        if (toneCompare != 0) return toneCompare;
+        return stringComp;
+    }
+
+    @Override
+    public int compare(final Theme o1, final Theme o2) {
+        if (o1 == null) return -1;
+        return o1.compareTo(o2);
+    }
 }