Code/net/minecraft/world/level/block/entity/SignText.java

package net.minecraft.world.level.block.entity;

import com.mojang.serialization.Codec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import com.mojang.serialization.codecs.RecordCodecBuilder.Instance;
import java.util.Arrays;
import java.util.List;
import java.util.Optional;
import java.util.function.Function;
import javax.annotation.Nullable;
import net.minecraft.Util;
import net.minecraft.network.chat.ClickEvent;
import net.minecraft.network.chat.CommonComponents;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.ComponentSerialization;
import net.minecraft.network.chat.Style;
import net.minecraft.util.FormattedCharSequence;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.DyeColor;

public class SignText {
    private static final Codec<Component[]> LINES_CODEC = ComponentSerialization.CODEC
        .listOf()
        .comapFlatMap(
            p_327312_ -> Util.fixedSize((List<Component>)p_327312_, 4)
                .map(p_277881_ -> new Component[]{p_277881_.get(0), p_277881_.get(1), p_277881_.get(2), p_277881_.get(3)}),
            p_277460_ -> List.of(p_277460_[0], p_277460_[1], p_277460_[2], p_277460_[3])
        );
    public static final Codec<SignText> DIRECT_CODEC = RecordCodecBuilder.create(
        p_327313_ -> p_327313_.group(
                LINES_CODEC.fieldOf("messages").forGetter(p_277822_ -> p_277822_.messages),
                LINES_CODEC.lenientOptionalFieldOf("filtered_messages").forGetter(SignText::filteredMessages),
                DyeColor.CODEC.fieldOf("color").orElse(DyeColor.BLACK).forGetter(p_277343_ -> p_277343_.color),
                Codec.BOOL.fieldOf("has_glowing_text").orElse(false).forGetter(p_277555_ -> p_277555_.hasGlowingText)
            )
            .apply(p_327313_, SignText::load)
    );
    public static final int LINES = 4;
    private final Component[] messages;
    private final Component[] filteredMessages;
    private final DyeColor color;
    private final boolean hasGlowingText;
    @Nullable
    private FormattedCharSequence[] renderMessages;
    private boolean renderMessagedFiltered;

    public SignText() {
        this(emptyMessages(), emptyMessages(), DyeColor.BLACK, false);
    }

    public SignText(Component[] p_277506_, Component[] p_277908_, DyeColor p_277883_, boolean p_278091_) {
        this.messages = p_277506_;
        this.filteredMessages = p_277908_;
        this.color = p_277883_;
        this.hasGlowingText = p_278091_;
    }

    private static Component[] emptyMessages() {
        return new Component[]{CommonComponents.EMPTY, CommonComponents.EMPTY, CommonComponents.EMPTY, CommonComponents.EMPTY};
    }

    private static SignText load(Component[] p_277661_, Optional<Component[]> p_277768_, DyeColor p_277345_, boolean p_278008_) {
        return new SignText(p_277661_, p_277768_.orElse(Arrays.copyOf(p_277661_, p_277661_.length)), p_277345_, p_278008_);
    }

    public boolean hasGlowingText() {
        return this.hasGlowingText;
    }

    public SignText setHasGlowingText(boolean p_277953_) {
        return p_277953_ == this.hasGlowingText ? this : new SignText(this.messages, this.filteredMessages, this.color, p_277953_);
    }

    public DyeColor getColor() {
        return this.color;
    }

    public SignText setColor(DyeColor p_277507_) {
        return p_277507_ == this.getColor() ? this : new SignText(this.messages, this.filteredMessages, p_277507_, this.hasGlowingText);
    }

    public Component getMessage(int p_277404_, boolean p_278108_) {
        return this.getMessages(p_278108_)[p_277404_];
    }

    public SignText setMessage(int p_277878_, Component p_277360_) {
        return this.setMessage(p_277878_, p_277360_, p_277360_);
    }

    public SignText setMessage(int p_277690_, Component p_277852_, Component p_277564_) {
        Component[] acomponent = Arrays.copyOf(this.messages, this.messages.length);
        Component[] acomponent1 = Arrays.copyOf(this.filteredMessages, this.filteredMessages.length);
        acomponent[p_277690_] = p_277852_;
        acomponent1[p_277690_] = p_277564_;
        return new SignText(acomponent, acomponent1, this.color, this.hasGlowingText);
    }

    public boolean hasMessage(Player p_277764_) {
        return Arrays.stream(this.getMessages(p_277764_.isTextFilteringEnabled())).anyMatch(p_277499_ -> !p_277499_.getString().isEmpty());
    }

    public Component[] getMessages(boolean p_277992_) {
        return p_277992_ ? this.filteredMessages : this.messages;
    }

    public FormattedCharSequence[] getRenderMessages(boolean p_277336_, Function<Component, FormattedCharSequence> p_277538_) {
        if (this.renderMessages == null || this.renderMessagedFiltered != p_277336_) {
            this.renderMessagedFiltered = p_277336_;
            this.renderMessages = new FormattedCharSequence[4];

            for (int i = 0; i < 4; i++) {
                this.renderMessages[i] = p_277538_.apply(this.getMessage(i, p_277336_));
            }
        }

        return this.renderMessages;
    }

    private Optional<Component[]> filteredMessages() {
        for (int i = 0; i < 4; i++) {
            if (!this.filteredMessages[i].equals(this.messages[i])) {
                return Optional.of(this.filteredMessages);
            }
        }

        return Optional.empty();
    }

    public boolean hasAnyClickCommands(Player p_277865_) {
        for (Component component : this.getMessages(p_277865_.isTextFilteringEnabled())) {
            Style style = component.getStyle();
            ClickEvent clickevent = style.getClickEvent();
            if (clickevent != null && clickevent.action() == ClickEvent.Action.RUN_COMMAND) {
                return true;
            }
        }

        return false;
    }
}