Add mod icons, finish GUI support through Cloth Config Lite

omega-config-gui/src/main/java/draylar/omegaconfiggui/OmegaConfigGui.java

@@ -1,22 +1,63 @@
 package draylar.omegaconfiggui;
 
+import draylar.omegaconfig.OmegaConfig;
 import draylar.omegaconfig.api.Config;
+import draylar.omegaconfiggui.api.screen.OmegaScreenFactory;
+import me.shedaniel.clothconfiglite.api.ConfigScreen;
 import net.fabricmc.api.EnvType;
 import net.fabricmc.api.Environment;
-import net.fabricmc.loader.api.FabricLoader;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.text.LiteralText;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
 
 @Environment(EnvType.CLIENT)
 public class OmegaConfigGui {
 
     /**
-     * Registers a ModMenu configuration screen for the given {@link Config} instance.
-     *
-     * @param config registered config to create a ModMenu screen for
-     * @param <T>    config type
+     * Returns a factory which provides new Cloth Config Lite {@link Screen} instances for the given {@link Config}.
+     * @param config Omega Config instance to create the screen factory for
+     * @return a factory which provides new Cloth Config Lite {@link Screen} instances for the given {@link Config}.
      */
-    public static <T extends Config> void registerConfigScreen(T config) {
-        if(FabricLoader.getInstance().isModLoaded("modmenu")) {
-//            ModMenuHelper.injectScreen(config, parent -> new OmegaConfigScreen<>(config, parent));
-        }
+    public static OmegaScreenFactory<Screen> getConfigScreenFactory(Config config) {
+        return parent -> {
+            try {
+                Config defaultConfig = config.getClass().getDeclaredConstructor().newInstance();
+                ConfigScreen screen = ConfigScreen.create(new LiteralText(config.getName()), parent);
+
+                // Fields
+                for (Field field : config.getClass().getDeclaredFields()) {
+                    try {
+                        screen.add(new LiteralText(field.getName()), field.get(config), () -> {
+                            try {
+                                return field.get(defaultConfig);
+                            } catch (IllegalAccessException e) {
+                                e.printStackTrace();
+                            }
+
+                            return 0.0d;
+                        }, newValue -> {
+                            try {
+                                field.set(config, newValue);
+                            } catch (IllegalAccessException e) {
+                                e.printStackTrace();
+                            }
+
+                            config.save();
+                        });
+                    } catch (IllegalAccessException | IllegalArgumentException exception) {
+                        // ignored
+                    }
+                }
+
+                return screen.get();
+            } catch (NoSuchMethodException | InstantiationException | IllegalAccessException | InvocationTargetException exception) {
+                OmegaConfig.LOGGER.error(String.format("Configuration class for mod %s must have a no-argument constructor for retrieving default values.", config.getModid()));
+            }
+
+            // todo: is this a bad idea
+            return null;
+        };
     }
 }