src/game/java/net/minecraft/client/gui/components/LockIconButton.java

package net.minecraft.client.gui.components;

import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.renderer.RenderType;
import net.minecraft.network.chat.CommonComponents;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.MutableComponent;
import net.minecraft.resources.ResourceLocation;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public class LockIconButton extends Button {
    private boolean locked;

    public LockIconButton(int p_94299_, int p_94300_, Button.OnPress p_94301_) {
        super(p_94299_, p_94300_, 20, 20, Component.translatable("narrator.button.difficulty_lock"), p_94301_, DEFAULT_NARRATION);
    }

    @Override
    protected MutableComponent createNarrationMessage() {
        return CommonComponents.joinForNarration(
            super.createNarrationMessage(),
            this.isLocked() ? Component.translatable("narrator.button.difficulty_lock.locked") : Component.translatable("narrator.button.difficulty_lock.unlocked")
        );
    }

    public boolean isLocked() {
        return this.locked;
    }

    public void setLocked(boolean p_94310_) {
        this.locked = p_94310_;
    }

    @Override
    public void renderWidget(GuiGraphics p_282701_, int p_282638_, int p_283565_, float p_282549_) {
        LockIconButton.Icon lockiconbutton$icon;
        if (!this.active) {
            lockiconbutton$icon = this.locked ? LockIconButton.Icon.LOCKED_DISABLED : LockIconButton.Icon.UNLOCKED_DISABLED;
        } else if (this.isHoveredOrFocused()) {
            lockiconbutton$icon = this.locked ? LockIconButton.Icon.LOCKED_HOVER : LockIconButton.Icon.UNLOCKED_HOVER;
        } else {
            lockiconbutton$icon = this.locked ? LockIconButton.Icon.LOCKED : LockIconButton.Icon.UNLOCKED;
        }

        p_282701_.blitSprite(RenderType::guiTextured, lockiconbutton$icon.sprite, this.getX(), this.getY(), this.width, this.height);
    }

    @OnlyIn(Dist.CLIENT)
    static enum Icon {
        LOCKED(ResourceLocation.withDefaultNamespace("widget/locked_button")),
        LOCKED_HOVER(ResourceLocation.withDefaultNamespace("widget/locked_button_highlighted")),
        LOCKED_DISABLED(ResourceLocation.withDefaultNamespace("widget/locked_button_disabled")),
        UNLOCKED(ResourceLocation.withDefaultNamespace("widget/unlocked_button")),
        UNLOCKED_HOVER(ResourceLocation.withDefaultNamespace("widget/unlocked_button_highlighted")),
        UNLOCKED_DISABLED(ResourceLocation.withDefaultNamespace("widget/unlocked_button_disabled"));

        final ResourceLocation sprite;

        private Icon(final ResourceLocation p_301150_) {
            this.sprite = p_301150_;
        }
    }
}