added builder

src/main/java/com/kasetoatz/fastGhast/FastGhast.java

@@ -1,6 +1,9 @@
 package com.kasetoatz.fastghast;
 
-import com.kasetoatz.fastghast.configscreen.ConfigScreen;
+import com.kasetoatz.fastghast.configscreen.DumbassConfig;
+import com.kasetoatz.fastghast.configscreen.options.BoolOption;
+import com.kasetoatz.fastghast.configscreen.options.FloatOption;
+import com.kasetoatz.fastghast.configscreen.options.Validator;
 import com.terraformersmc.modmenu.api.ConfigScreenFactory;
 import com.terraformersmc.modmenu.api.ModMenuApi;
 import net.fabricmc.api.ModInitializer;
@@ -30,6 +33,9 @@ public class Fastghast implements ModInitializer, ModMenuApi
     @Override
     public ConfigScreenFactory<?> getModConfigScreenFactory()
     {
-        return ConfigScreen::new;
+        return DumbassConfig.builder()
+            .withOption(new BoolOption("Test Boolean Option", "test_bool_opt", false))
+            .withOption(new FloatOption("Test Float Option", "test_float_opt", 1.F, value -> new Validator(value > 0.F, "Number must be binger than 0.")))
+            ::build;
     }
 }

src/main/java/com/kasetoatz/fastGhast/configscreen/ConfigEntry.java

@@ -8,11 +8,11 @@ import net.minecraft.client.gui.widget.ElementListWidget;
 
 import java.util.List;
 
-public class Option extends ElementListWidget.Entry<Option>
+public class ConfigEntry extends ElementListWidget.Entry<ConfigEntry>
 {
     private final List<ClickableWidget> widgets;
 
-    public Option(ClickableWidget... widgets)
+    public ConfigEntry(ClickableWidget... widgets)
     {
         this.widgets = List.of(widgets);
     }

src/main/java/com/kasetoatz/fastGhast/configscreen/ConfigEntryList.java

@@ -1,15 +1,15 @@
 package com.kasetoatz.fastghast.configscreen;
 
+import com.kasetoatz.fastghast.configscreen.options.Option;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.gui.DrawContext;
 import net.minecraft.client.gui.widget.*;
-import net.minecraft.text.Text;
 
 import java.util.List;
 
-public class OptionList extends ElementListWidget<Option>
+public class ConfigEntryList extends ElementListWidget<ConfigEntry>
 {
-    public OptionList(MinecraftClient client, int width, int height, int y, int itemHeight)
+    public ConfigEntryList(MinecraftClient client, int width, int height, int y, int itemHeight)
     {
         super(client, width, height, y, itemHeight);
     }
@@ -29,10 +29,10 @@ public class OptionList extends ElementListWidget<Option>
     @Override
     public void renderWidget(DrawContext context, int mouseX, int mouseY, float delta)
     {
-        List<Option> options = this.children();
+        List<ConfigEntry> options = this.children();
         for (int i = 0; i < options.size(); i++)
         {
-            Option option = options.get(i);
+            ConfigEntry option = options.get(i);
             if (option.getY() + option.getHeight() < this.getY())
             {
                 continue;
@@ -46,11 +46,8 @@ public class OptionList extends ElementListWidget<Option>
         super.renderWidget(context, mouseX, mouseY, delta);
     }
 
-    public void add()
+    public void add(Option<?> option)
     {
-        this.addEntry(new Option(
+        this.addEntry(option.toEntry(this.client.textRenderer, this.getWidth()));
-            new TextWidget(20, 0, 200, 40, Text.of("TEST TEXT"), client.textRenderer),
-            ButtonWidget.builder(Text.of("TEST BUTTON"), button -> System.out.println("test button pressed")).dimensions(this.getWidth() - 100, 0, 80, 40).build())
-        );
     }
 }

src/main/java/com/kasetoatz/fastGhast/configscreen/ConfigScreen.java

@@ -1,43 +1,45 @@
 package com.kasetoatz.fastghast.configscreen;
 
+import com.kasetoatz.fastghast.configscreen.options.Option;
 import net.minecraft.client.gui.screen.Screen;
 import net.minecraft.client.gui.widget.ButtonWidget;
+import net.minecraft.client.gui.widget.TextWidget;
 import net.minecraft.client.gui.widget.ThreePartsLayoutWidget;
 import net.minecraft.screen.ScreenTexts;
 import net.minecraft.text.Text;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class ConfigScreen extends Screen
 {
     private final Screen parent;
+    private final List<Option<?>> options;
     private final ThreePartsLayoutWidget layout = new ThreePartsLayoutWidget(this);
-    private OptionList body;
+    private ConfigEntryList body;
 
-    public ConfigScreen(Screen parent)
+    public ConfigScreen(Screen parent, Text title, List<Option<?>> options)
     {
-        super(Text.of("TEST SCREEN"));
+        super(title);
         this.parent = parent;
+        this.options = options;
     }
 
     @Override
     protected void init()
     {
         this.layout.addHeader(this.title, this.textRenderer);
-        this.body = new OptionList(this.client, this.layout.getWidth(), this.layout.getContentHeight(), this.layout.getHeaderHeight(), 50);
+        this.body = new ConfigEntryList(this.client, this.layout.getWidth(), this.layout.getContentHeight(), this.layout.getHeaderHeight(), 50);
-        this.addItems();
+        for (Option<?> option : this.options)
+        {
+            this.body.add(option);
+        }
         this.layout.addBody(body);
         this.layout.addFooter(ButtonWidget.builder(ScreenTexts.DONE, button -> this.close()).width(200).build());
         this.layout.forEachChild(this::addDrawableChild);
         this.refreshWidgetPositions();
     }
 
-    private void addItems()
-    {
-        for (int i = 0; i < 20; i++)
-        {
-            this.body.add();
-        }
-    }
-
     @Override
     protected void refreshWidgetPositions()
     {

src/main/java/com/kasetoatz/fastGhast/configscreen/DumbassConfig.java

@@ -0,0 +1,35 @@
+package com.kasetoatz.fastghast.configscreen;
+
+import com.kasetoatz.fastghast.configscreen.options.Option;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.text.Text;
+
+import java.util.ArrayList;
+
+public class DumbassConfig
+{
+    public static Builder builder()
+    {
+        return new Builder();
+    }
+
+    public static class Builder
+    {
+        private final ArrayList<Option<?>> options = new ArrayList<>();
+
+        private Builder()
+        {
+        }
+
+        public Builder withOption(Option<?> option)
+        {
+            this.options.add(option);
+            return this;
+        }
+
+        public ConfigScreen build(Screen parent)
+        {
+            return new ConfigScreen(parent, Text.literal("TEST SCREEN"), this.options);
+        }
+    }
+}

src/main/java/com/kasetoatz/fastGhast/configscreen/options/BoolOption.java

@@ -0,0 +1,40 @@
+package com.kasetoatz.fastghast.configscreen.options;
+
+import com.kasetoatz.fastghast.configscreen.ConfigEntry;
+import net.minecraft.client.font.TextRenderer;
+import net.minecraft.client.gui.widget.ButtonWidget;
+import net.minecraft.client.gui.widget.TextWidget;
+import net.minecraft.text.Text;
+
+public class BoolOption extends Option<Boolean>
+{
+    public BoolOption(String text, String key, boolean defaultValue)
+    {
+        super(text, key, defaultValue);
+    }
+
+    private Text getButtonText()
+    {
+        return this.getValue() ? Text.literal("True").withColor(0x00FF00) : Text.literal("False").withColor(0xFF0000);
+    }
+
+    private void onClick(ButtonWidget button)
+    {
+        this.onChange(!this.getValue());
+        button.setMessage(this.getButtonText());
+    }
+
+    @Override
+    public ConfigEntry toEntry(TextRenderer textRenderer, int maxWidth)
+    {
+        return new ConfigEntry(
+            new TextWidget(20, 0, 200, 40, this.getText(), textRenderer),
+            ButtonWidget.builder(getButtonText(), this::onClick).dimensions(maxWidth - 100, 0, 80, 40).build()
+        );
+    }
+
+    @Override
+    public void onError(String message)
+    {
+    }
+}

src/main/java/com/kasetoatz/fastGhast/configscreen/options/FloatOption.java

@@ -0,0 +1,52 @@
+package com.kasetoatz.fastghast.configscreen.options;
+
+import com.kasetoatz.fastghast.configscreen.ConfigEntry;
+import net.minecraft.client.font.TextRenderer;
+import net.minecraft.client.gui.widget.TextFieldWidget;
+import net.minecraft.client.gui.widget.TextWidget;
+import net.minecraft.text.Text;
+
+import java.util.function.Function;
+
+public class FloatOption extends Option<Float>
+{
+    public FloatOption(String text, String key, Float defaultValue, Function<Float, Validator> validator)
+    {
+        super(text, key, defaultValue, validator);
+    }
+
+    private boolean predicate(String text)
+    {
+        if (text.isEmpty() || text.equals(".") || text.equals("-"))
+        {
+            return true;
+        }
+        try
+        {
+            Float.parseFloat(text);
+            return true;
+        }
+        catch (NumberFormatException exc)
+        {
+            return false;
+        }
+    }
+
+    @Override
+    public ConfigEntry toEntry(TextRenderer textRenderer, int maxWidth)
+    {
+        TextFieldWidget textField = new TextFieldWidget(textRenderer, maxWidth - 100, 0, 80, 40, this.getText());
+        textField.setText(this.getValue().toString());
+        textField.setTextPredicate(this::predicate);
+        return new ConfigEntry(
+            new TextWidget(20, 0, 200, 40, this.getText(), textRenderer),
+            textField
+        );
+    }
+
+    @Override
+    public void onError(String message)
+    {
+
+    }
+}

src/main/java/com/kasetoatz/fastGhast/configscreen/options/Option.java

@@ -0,0 +1,64 @@
+package com.kasetoatz.fastghast.configscreen.options;
+
+import com.kasetoatz.fastghast.configscreen.ConfigEntry;
+import net.minecraft.client.font.TextRenderer;
+import net.minecraft.text.Text;
+
+import java.util.function.Function;
+
+public abstract class Option<T>
+{
+    private final Text text;
+    private final String key;
+    private final T defaultValue;
+    private final Function<T, Validator> validator;
+    private T value;
+
+    public Option(String text, String key, T defaultValue, Function<T, Validator> validator)
+    {
+        this.text = Text.of(text);
+        this.key = key;
+        this.defaultValue = defaultValue;
+        this.validator = validator;
+        this.value = defaultValue;
+    }
+
+    public Option(String text, String key, T defaultValue)
+    {
+        this(text, key, defaultValue, value -> new Validator(true, ""));
+    }
+
+    public Text getText()
+    {
+        return this.text;
+    }
+
+    public String getKey()
+    {
+        return this.key;
+    }
+
+    public T getDefaultValue()
+    {
+        return this.defaultValue;
+    }
+
+    public T getValue()
+    {
+        return this.value;
+    }
+
+    public void onChange(T value)
+    {
+        Validator validator = this.validator.apply(value);
+        if (!validator.isValid())
+        {
+            onError(validator.getErrorMessage());
+            return;
+        }
+        this.value = value;
+    }
+
+    public abstract ConfigEntry toEntry(TextRenderer textRenderer, int maxWidth);
+    public abstract void onError(String message);
+}

src/main/java/com/kasetoatz/fastGhast/configscreen/options/Validator.java

@@ -0,0 +1,23 @@
+package com.kasetoatz.fastghast.configscreen.options;
+
+public class Validator
+{
+    private final boolean valid;
+    private final String errorMessage;
+
+    public Validator(boolean condition, String errorMessage)
+    {
+        this.valid = condition;
+        this.errorMessage = errorMessage;
+    }
+
+    public boolean isValid()
+    {
+        return this.valid;
+    }
+
+    public String getErrorMessage()
+    {
+        return this.errorMessage;
+    }
+}