add int & sub options

src/main/java/com/kasetoatz/dumbassconfig/options/SubOption.java

@@ -0,0 +1,85 @@
+package com.kasetoatz.dumbassconfig.options;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.kasetoatz.dumbassconfig.ui.ConfigScreen;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.gui.widget.ButtonWidget;
+import net.minecraft.text.Text;
+
+import java.util.ArrayList;
+
+public class SubOption extends AbstractButtonOption<JsonObject>
+{
+    private final ArrayList<AbstractOption<?>> options = new ArrayList<>();
+    private final Gson gson = new GsonBuilder().setPrettyPrinting().create();
+    private ConfigScreen ui;
+
+    private SubOption(String text, String key)
+    {
+        super(text, key, null);
+    }
+
+    @Override
+    public Text getButtonText()
+    {
+        return Text.literal("Open");
+    }
+
+    @Override
+    public void onClick(ButtonWidget button)
+    {
+        this.ui.setParent(MinecraftClient.getInstance().currentScreen);
+        MinecraftClient.getInstance().setScreen(this.ui);
+    }
+
+    @Override
+    public JsonObject getValue()
+    {
+        JsonObject data = new JsonObject();
+        for (AbstractOption<?> option : this.options)
+        {
+            data.add(option.getKey(), this.gson.toJsonTree(option.getValue()));
+        }
+        return data;
+    }
+
+    @Override
+    public void fromJson(JsonElement element)
+    {
+        JsonObject data = element.getAsJsonObject();
+        for (AbstractOption<?> option : this.options)
+        {
+            option.fromJson(data.get(option.getKey()));
+        }
+    }
+
+    public static Builder builder(String text, String key)
+    {
+        return new Builder(text, key);
+    }
+
+    public static class Builder
+    {
+        private final SubOption option;
+
+        private Builder(String text, String key)
+        {
+            this.option = new SubOption(text, key);
+        }
+
+        public Builder withOption(AbstractOption<?> option)
+        {
+            this.option.options.add(option);
+            return this;
+        }
+
+        public SubOption build()
+        {
+            this.option.ui = new ConfigScreen(this.option.getText(), this.option.options);
+            return this.option;
+        }
+    }
+}