Adventure

Co-authored-by: zml <zml@stellardrift.ca>
Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
Co-authored-by: Yannick Lamprecht <yannicklamprecht@live.de>

paper-api/src/main/java/io/papermc/paper/chat/ViewerUnawareImpl.java

@@ -0,0 +1,38 @@
+package io.papermc.paper.chat;
+
+import net.kyori.adventure.audience.Audience;
+import net.kyori.adventure.text.Component;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+@ApiStatus.Internal
+@NullMarked
+sealed class ViewerUnawareImpl implements ChatRenderer, ChatRenderer.ViewerUnaware permits ViewerUnawareImpl.Default {
+    private final ViewerUnaware unaware;
+    private @Nullable Component message;
+
+    ViewerUnawareImpl(final ViewerUnaware unaware) {
+        this.unaware = unaware;
+    }
+
+    @Override
+    public Component render(final Player source, final Component sourceDisplayName, final Component message, final Audience viewer) {
+        return this.render(source, sourceDisplayName, message);
+    }
+
+    @Override
+    public Component render(final Player source, final Component sourceDisplayName, final Component message) {
+        if (this.message == null) {
+            this.message = this.unaware.render(source, sourceDisplayName, message);
+        }
+        return this.message;
+    }
+
+    static final class Default extends ViewerUnawareImpl implements ChatRenderer.Default {
+        Default(final ViewerUnaware unaware) {
+            super(unaware);
+        }
+    }
+}