Code/net/minecraft/client/gui/components/toasts/SystemToast.java

package net.minecraft.client.gui.components.toasts;

import com.google.common.collect.ImmutableList;
import java.util.List;
import javax.annotation.Nullable;
import net.minecraft.ChatFormatting;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Font;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.renderer.RenderType;
import net.minecraft.network.chat.Component;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.util.FormattedCharSequence;
import net.minecraft.world.level.ChunkPos;
import net.minecraftforge.api.distmarker.Dist;
import net.minecraftforge.api.distmarker.OnlyIn;

@OnlyIn(Dist.CLIENT)
public class SystemToast implements Toast {
    private static final ResourceLocation BACKGROUND_SPRITE = ResourceLocation.withDefaultNamespace("toast/system");
    private static final int MAX_LINE_SIZE = 200;
    private static final int LINE_SPACING = 12;
    private static final int MARGIN = 10;
    private final SystemToast.SystemToastId id;
    private Component title;
    private List<FormattedCharSequence> messageLines;
    private long lastChanged;
    private boolean changed;
    private final int width;
    private boolean forceHide;
    private Toast.Visibility wantedVisibility = Toast.Visibility.HIDE;

    public SystemToast(SystemToast.SystemToastId p_94832_, Component p_94833_, @Nullable Component p_94834_) {
        this(
            p_94832_,
            p_94833_,
            nullToEmpty(p_94834_),
            Math.max(
                160, 30 + Math.max(Minecraft.getInstance().font.width(p_94833_), p_94834_ == null ? 0 : Minecraft.getInstance().font.width(p_94834_))
            )
        );
    }

    public static SystemToast multiline(Minecraft p_94848_, SystemToast.SystemToastId p_94849_, Component p_94850_, Component p_94851_) {
        Font font = p_94848_.font;
        List<FormattedCharSequence> list = font.split(p_94851_, 200);
        int i = Math.max(200, list.stream().mapToInt(font::width).max().orElse(200));
        return new SystemToast(p_94849_, p_94850_, list, i + 30);
    }

    private SystemToast(SystemToast.SystemToastId p_94827_, Component p_94828_, List<FormattedCharSequence> p_94829_, int p_94830_) {
        this.id = p_94827_;
        this.title = p_94828_;
        this.messageLines = p_94829_;
        this.width = p_94830_;
    }

    private static ImmutableList<FormattedCharSequence> nullToEmpty(@Nullable Component p_94861_) {
        return p_94861_ == null ? ImmutableList.of() : ImmutableList.of(p_94861_.getVisualOrderText());
    }

    @Override
    public int width() {
        return this.width;
    }

    @Override
    public int height() {
        return 20 + Math.max(this.messageLines.size(), 1) * 12;
    }

    public void forceHide() {
        this.forceHide = true;
    }

    @Override
    public Toast.Visibility getWantedVisibility() {
        return this.wantedVisibility;
    }

    @Override
    public void update(ToastManager p_361843_, long p_364076_) {
        if (this.changed) {
            this.lastChanged = p_364076_;
            this.changed = false;
        }

        double d0 = this.id.displayTime * p_361843_.getNotificationDisplayTimeMultiplier();
        long i = p_364076_ - this.lastChanged;
        this.wantedVisibility = !this.forceHide && i < d0 ? Toast.Visibility.SHOW : Toast.Visibility.HIDE;
    }

    @Override
    public void render(GuiGraphics p_281624_, Font p_368558_, long p_282762_) {
        p_281624_.blitSprite(RenderType::guiTextured, BACKGROUND_SPRITE, 0, 0, this.width(), this.height());
        if (this.messageLines.isEmpty()) {
            p_281624_.drawString(p_368558_, this.title, 18, 12, -256, false);
        } else {
            p_281624_.drawString(p_368558_, this.title, 18, 7, -256, false);

            for (int i = 0; i < this.messageLines.size(); i++) {
                p_281624_.drawString(p_368558_, this.messageLines.get(i), 18, 18 + i * 12, -1, false);
            }
        }
    }

    public void reset(Component p_94863_, @Nullable Component p_94864_) {
        this.title = p_94863_;
        this.messageLines = nullToEmpty(p_94864_);
        this.changed = true;
    }

    public SystemToast.SystemToastId getToken() {
        return this.id;
    }

    public static void add(ToastManager p_362779_, SystemToast.SystemToastId p_94857_, Component p_94858_, @Nullable Component p_94859_) {
        p_362779_.addToast(new SystemToast(p_94857_, p_94858_, p_94859_));
    }

    public static void addOrUpdate(ToastManager p_360727_, SystemToast.SystemToastId p_94871_, Component p_94872_, @Nullable Component p_94873_) {
        SystemToast systemtoast = p_360727_.getToast(SystemToast.class, p_94871_);
        if (systemtoast == null) {
            add(p_360727_, p_94871_, p_94872_, p_94873_);
        } else {
            systemtoast.reset(p_94872_, p_94873_);
        }
    }

    public static void forceHide(ToastManager p_366670_, SystemToast.SystemToastId p_311637_) {
        SystemToast systemtoast = p_366670_.getToast(SystemToast.class, p_311637_);
        if (systemtoast != null) {
            systemtoast.forceHide();
        }
    }

    public static void onWorldAccessFailure(Minecraft p_94853_, String p_94854_) {
        add(p_94853_.getToastManager(), SystemToast.SystemToastId.WORLD_ACCESS_FAILURE, Component.translatable("selectWorld.access_failure"), Component.literal(p_94854_));
    }

    public static void onWorldDeleteFailure(Minecraft p_94867_, String p_94868_) {
        add(p_94867_.getToastManager(), SystemToast.SystemToastId.WORLD_ACCESS_FAILURE, Component.translatable("selectWorld.delete_failure"), Component.literal(p_94868_));
    }

    public static void onPackCopyFailure(Minecraft p_94876_, String p_94877_) {
        add(p_94876_.getToastManager(), SystemToast.SystemToastId.PACK_COPY_FAILURE, Component.translatable("pack.copyFailure"), Component.literal(p_94877_));
    }

    public static void onFileDropFailure(Minecraft p_343671_, int p_343465_) {
        add(
            p_343671_.getToastManager(),
            SystemToast.SystemToastId.FILE_DROP_FAILURE,
            Component.translatable("gui.fileDropFailure.title"),
            Component.translatable("gui.fileDropFailure.detail", p_343465_)
        );
    }

    public static void onLowDiskSpace(Minecraft p_335579_) {
        addOrUpdate(
            p_335579_.getToastManager(),
            SystemToast.SystemToastId.LOW_DISK_SPACE,
            Component.translatable("chunk.toast.lowDiskSpace"),
            Component.translatable("chunk.toast.lowDiskSpace.description")
        );
    }

    public static void onChunkLoadFailure(Minecraft p_335709_, ChunkPos p_330201_) {
        addOrUpdate(
            p_335709_.getToastManager(),
            SystemToast.SystemToastId.CHUNK_LOAD_FAILURE,
            Component.translatable("chunk.toast.loadFailure", Component.translationArg(p_330201_)).withStyle(ChatFormatting.RED),
            Component.translatable("chunk.toast.checkLog")
        );
    }

    public static void onChunkSaveFailure(Minecraft p_328693_, ChunkPos p_333444_) {
        addOrUpdate(
            p_328693_.getToastManager(),
            SystemToast.SystemToastId.CHUNK_SAVE_FAILURE,
            Component.translatable("chunk.toast.saveFailure", Component.translationArg(p_333444_)).withStyle(ChatFormatting.RED),
            Component.translatable("chunk.toast.checkLog")
        );
    }

    @OnlyIn(Dist.CLIENT)
    public static class SystemToastId {
        public static final SystemToast.SystemToastId NARRATOR_TOGGLE = new SystemToast.SystemToastId();
        public static final SystemToast.SystemToastId WORLD_BACKUP = new SystemToast.SystemToastId();
        public static final SystemToast.SystemToastId PACK_LOAD_FAILURE = new SystemToast.SystemToastId();
        public static final SystemToast.SystemToastId WORLD_ACCESS_FAILURE = new SystemToast.SystemToastId();
        public static final SystemToast.SystemToastId PACK_COPY_FAILURE = new SystemToast.SystemToastId();
        public static final SystemToast.SystemToastId FILE_DROP_FAILURE = new SystemToast.SystemToastId();
        public static final SystemToast.SystemToastId PERIODIC_NOTIFICATION = new SystemToast.SystemToastId();
        public static final SystemToast.SystemToastId LOW_DISK_SPACE = new SystemToast.SystemToastId(10000L);
        public static final SystemToast.SystemToastId CHUNK_LOAD_FAILURE = new SystemToast.SystemToastId();
        public static final SystemToast.SystemToastId CHUNK_SAVE_FAILURE = new SystemToast.SystemToastId();
        public static final SystemToast.SystemToastId UNSECURE_SERVER_WARNING = new SystemToast.SystemToastId(10000L);
        final long displayTime;

        public SystemToastId(long p_311745_) {
            this.displayTime = p_311745_;
        }

        public SystemToastId() {
            this(5000L);
        }
    }
}