dialog rename working good enough

nms/nms-common/src/main/kotlin/xyz/alexcrea/cuanvil/dialog/AnvilRenameDialog.kt

@@ -0,0 +1,14 @@
+package xyz.alexcrea.cuanvil.dialog
+
+import org.bukkit.entity.HumanEntity
+import org.bukkit.event.inventory.PrepareAnvilEvent
+
+interface AnvilRenameDialog {
+
+    fun canSendDialog(): Boolean
+
+    fun tryShowDialog(player: HumanEntity, event: PrepareAnvilEvent)
+
+    fun closeInventory(player: HumanEntity)
+
+}

nms/nms-paper/build.gradle.kts

@@ -11,7 +11,7 @@ dependencies {
     implementation(project(":nms:nms-common"))
 
     // Used for nms
-    paperweight.paperDevBundle("1.20.6-R0.1-SNAPSHOT")
+    paperweight.paperDevBundle("1.21.7-R0.1-SNAPSHOT")
 }
 
 repositories {

nms/nms-paper/src/main/kotlin/xyz/alexcrea/cuanvil/dialog/AnvilRenameDialogImpl.kt

@@ -0,0 +1,181 @@
+package xyz.alexcrea.cuanvil.dialog
+
+import io.papermc.paper.dialog.Dialog
+import io.papermc.paper.registry.data.dialog.ActionButton
+import io.papermc.paper.registry.data.dialog.DialogBase
+import io.papermc.paper.registry.data.dialog.action.DialogAction
+import io.papermc.paper.registry.data.dialog.body.DialogBody
+import io.papermc.paper.registry.data.dialog.input.DialogInput
+import io.papermc.paper.registry.data.dialog.type.DialogType
+import io.papermc.paper.threadedregions.scheduler.ScheduledTask
+import net.kyori.adventure.text.Component
+import net.kyori.adventure.text.event.ClickCallback
+import net.kyori.adventure.text.format.TextColor
+import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer
+import net.minecraft.world.inventory.AnvilMenu
+import org.bukkit.craftbukkit.event.CraftEventFactory
+import org.bukkit.craftbukkit.inventory.CraftInventoryView
+import org.bukkit.craftbukkit.inventory.view.CraftAnvilView
+import org.bukkit.entity.HumanEntity
+import org.bukkit.event.inventory.PrepareAnvilEvent
+import org.bukkit.inventory.ItemStack
+import org.bukkit.plugin.Plugin
+import java.util.UUID
+import java.util.function.BiFunction
+import java.util.function.Consumer
+import java.util.function.Supplier
+import kotlin.collections.set
+
+@Suppress("UnstableApiUsage")
+class AnvilRenameDialogImpl(
+    val fromFormated: BiFunction<HumanEntity, Component?, String?>,
+    val maxLength: Supplier<Int>,
+    val plugin: Plugin,
+): AnvilRenameDialog {
+
+    companion object {
+        private const val RENAME_TEXT_KEY = "rename"
+
+        private const val MAX_WIDTH = 512
+
+        private val PLAIN_TEXT_SERIALIZER = PlainTextComponentSerializer.plainText()
+
+        // Need to be able to translate it later !
+        private val USER_FACING_RENAME_TITLE = Component.text("Rename Your Item")
+        private val USER_FACING_WARNING = Component.text("Note that the repair text will appear blank after Confirm\n" +
+                "But the name will be correctly applied")
+        private val USER_FACING_CONFIRM = Component.text("Confirm").color(TextColor.fromHexString("#40FF40"))
+        private val USER_FACING_CANCEL = Component.text("Cancel").color(TextColor.fromHexString("#FF4040"))
+    }
+
+    private val lastNames = HashMap<UUID, String>()
+    private val lastLeftItem = HashMap<UUID, String>()
+    private val runTaskMap = HashMap<UUID, ScheduledTask>()
+
+    private val containerField = CraftInventoryView::class.java.getDeclaredField("container")
+
+    init {
+        containerField.setAccessible(true)
+    }
+
+    override fun canSendDialog(): Boolean {
+        return true
+    }
+
+    fun makeDialog(initial: String?, callback: Consumer<String?>): Dialog {
+        val maxLength = this.maxLength.get()
+        val initialFinal = initial?.take(maxLength)
+
+        val baseBuilder = DialogBase.builder(USER_FACING_RENAME_TITLE)
+            .canCloseWithEscape(true)
+            .afterAction(DialogBase.DialogAfterAction.CLOSE)
+            .inputs(listOf(
+                DialogInput.text(RENAME_TEXT_KEY, Component.text("Rename text"))
+                    .maxLength(maxLength)
+                    .initial(initialFinal ?: "")
+                    .labelVisible(false)
+                    .width(MAX_WIDTH)
+                    .build(),
+                ),
+            )
+        baseBuilder.body(listOf(
+                DialogBody.plainMessage(USER_FACING_WARNING, MAX_WIDTH)
+            ))
+
+        return Dialog.create { builder -> builder.empty()
+            .base(baseBuilder.build())
+            .type(DialogType.confirmation(
+                ActionButton.builder(USER_FACING_CONFIRM)
+                    .action(DialogAction.customClick({ response, _ ->
+                        val text = response.getText(RENAME_TEXT_KEY)!!
+                        callback.accept(text)
+                    }, ClickCallback.Options.builder().build()))
+                    .build(),
+                ActionButton.builder(USER_FACING_CANCEL)
+                    .build(),
+            ))
+        }
+    }
+
+    private fun setResult(player: HumanEntity, view: CraftAnvilView, result: String?) {
+        val defaultName = PLAIN_TEXT_SERIALIZER.serializeOrNull(view.getItem(0)?.effectiveName())
+        if(defaultName == result) {
+            setName(player, view, "")
+            if(defaultName != null) lastNames[player.uniqueId] = defaultName
+        }
+        else setName(player, view, result)
+    }
+
+    private fun setName(player: HumanEntity, view: CraftAnvilView, name: String?) {
+        val menu = (containerField.get(view) as AnvilMenu)
+        menu.itemName = name
+
+        if(name == null)
+            lastNames.remove(player.uniqueId)
+        else
+            lastNames[player.uniqueId] = name
+        CraftEventFactory.callPrepareResultEvent(menu, 2);
+    }
+
+    private fun nameFromItem(player: HumanEntity, item: ItemStack?): String? {
+        return if(item?.hasItemMeta() != true || !item.itemMeta.hasCustomName())
+            PLAIN_TEXT_SERIALIZER.serializeOrNull(item?.effectiveName())
+        else fromFormated.apply(player, item.effectiveName())
+    }
+
+    private fun tryShowDialogScheduled(player: HumanEntity, event: PrepareAnvilEvent) {
+        val view = event.view
+        if(view !is CraftAnvilView) return
+
+        val renameText = view.renameText
+        val leftItem = view.getItem(0)
+        val leftItemStr = leftItem?.toString()
+        val lastName = lastNames.getOrDefault(player.uniqueId, null)
+
+        if(lastLeftItem.getOrDefault(player.uniqueId, null) != leftItemStr) {
+            if(leftItemStr == null)
+                lastLeftItem.remove(player.uniqueId)
+            else lastLeftItem[player.uniqueId] = leftItemStr
+
+            setName(player, view, nameFromItem(player, leftItem))
+            return
+        }
+
+        if(lastName == renameText)
+            return
+
+        if(renameText?.isBlank() == true) {
+            setName(player, view, lastNames[player.uniqueId])
+            return
+        }
+
+        val dialog = makeDialog(lastName)
+        { result -> setResult(player, view, result) }
+        player.showDialog(dialog)
+    }
+
+    // We need to wait for a short time as changing item will change the name BEFORE the item change
+    // no guaranty both of them came in the same tick too so let's wait 2 tick....
+    override fun tryShowDialog(player: HumanEntity, event: PrepareAnvilEvent) {
+        runTaskMap.remove(player.uniqueId)?.cancel()
+
+        val task = player.scheduler.runDelayed(
+            plugin,
+            { _ ->
+                run { tryShowDialogScheduled(player, event) }
+            },
+            {},
+            2
+        )
+        if(task == null) return
+
+        runTaskMap[player.uniqueId] = task
+    }
+
+    override fun closeInventory(player: HumanEntity) {
+        lastNames.remove(player.uniqueId)
+        lastLeftItem.remove(player.uniqueId)
+        runTaskMap.remove(player.uniqueId)?.cancel()
+    }
+
+}