1. 修复closeAll方法中，未移除玩家缓存的bug。

2. 当玩家权限更新时，将关闭玩家的GUI，令其自行打开刷新所有前缀。
3. 允许配置GUI的标题。

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>cc.carm.plugin</groupId>
     <artifactId>UserPrefix</artifactId>
-    <version>1.2.3</version>
+    <version>1.2.4</version>
 
     <properties>
         <maven.compiler.source>8</maven.compiler.source>

src/main/java/cc/carm/plugin/userprefix/command/UserPrefixAdminCommand.java

@@ -24,7 +24,7 @@ public class UserPrefixAdminCommand implements CommandExecutor {
                 MessageUtil.send(sender, "&3&l用户前缀系统 &f前缀列表");
                 for (ConfiguredPrefix value : PrefixManager.getPrefixes().values()) {
                     MessageUtil.send(sender, "&8#" + value.getWeight() + " &f" + value.getIdentifier());
-                    MessageUtil.send(sender, "&8- &7显示名 &r" + value.getName() + " &7权限&r " + value.getPermission());
+                    MessageUtil.send(sender, "&8- &7显示名 &r" + value.getName() + (value.isPublic() ? "" : " &7权限&r " + value.getPermission()));
                     MessageUtil.send(sender, "&8- &7内容示例&r " + value.getContent() + sender.getName());
                 }
                 return true;

src/main/java/cc/carm/plugin/userprefix/configuration/PrefixConfig.java

@@ -15,6 +15,12 @@ public class PrefixConfig {
 
     }
 
+    public static class GUI {
+
+        public static ConfigValue<String> TITLE = new ConfigValue<>("GUI.title", String.class, "&f&l我的前缀 &8| 列表");
+
+    }
+
     public static class Messages {
 
         public static ConfigValueList<String> SELECTED = new ConfigValueList<>("messages.selected", String.class);

src/main/java/cc/carm/plugin/userprefix/listener/processor/UserNodeUpdateProcessor.java

@@ -1,6 +1,7 @@
 package cc.carm.plugin.userprefix.listener.processor;
 
 import cc.carm.plugin.userprefix.manager.UserManager;
+import cc.carm.plugin.userprefix.ui.PrefixSelectGUI;
 import net.luckperms.api.event.user.UserDataRecalculateEvent;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
@@ -11,6 +12,11 @@ public class UserNodeUpdateProcessor {
         Player player = Bukkit.getPlayer(event.getUser().getUniqueId());
         if (player == null) return;
         UserManager.checkPrefix(player, true);
+        if (PrefixSelectGUI.openingUsers.contains(player)) {
+            // 玩家权限更新，关闭其GUI，以令其重新打开刷新自己的前缀。
+            player.closeInventory();
+            PrefixSelectGUI.removeOpening(player);
+        }
     }
 
 }

src/main/java/cc/carm/plugin/userprefix/manager/UserManager.java

@@ -205,7 +205,7 @@ public class UserManager {
      * @return 若前缀标识不存在，则返回false；若前缀为默认前缀，或该前缀无权限，或玩家有该前缀的权限，则返回true。
      */
     public static boolean isPrefixUsable(Player player, ConfiguredPrefix configuredPrefix) {
-        return configuredPrefix.getPermission() == null //为null的话说明无需权限了
+        return configuredPrefix.isPublic()
                 || ServiceManager.hasPermission(ServiceManager.getUser(player), configuredPrefix.getPermission());
     }
 

src/main/java/cc/carm/plugin/userprefix/model/ConfiguredPrefix.java

@@ -2,6 +2,8 @@ package cc.carm.plugin.userprefix.model;
 
 import cc.carm.plugin.userprefix.util.ColorParser;
 import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 public class ConfiguredPrefix {
 
@@ -18,7 +20,13 @@ public class ConfiguredPrefix {
     ItemStack itemNoPermission;
     ItemStack itemWhenUsing;
 
-    public ConfiguredPrefix(String identifier, String name, String content, int weight, String permission, ItemStack itemHasPermission, ItemStack itemNoPermission, ItemStack itemWhenUsing) {
+    public ConfiguredPrefix(@NotNull String identifier,
+                            @NotNull String name,
+                            @NotNull String content,
+                            int weight, @Nullable String permission,
+                            @NotNull ItemStack itemHasPermission,
+                            @Nullable ItemStack itemNoPermission,
+                            @Nullable ItemStack itemWhenUsing) {
         this.identifier = identifier;
         this.name = name;
         this.content = content;
@@ -29,14 +37,17 @@ public class ConfiguredPrefix {
         this.itemWhenUsing = itemWhenUsing;
     }
 
+    @NotNull
     public String getIdentifier() {
         return identifier;
     }
 
+    @NotNull
     public String getName() {
         return name;
     }
 
+    @NotNull
     public String getContent() {
         return ColorParser.parse(content);
     }
@@ -45,22 +56,30 @@ public class ConfiguredPrefix {
         return weight;
     }
 
+    @Nullable
     public String getPermission() {
         return permission;
     }
 
+    @NotNull
     public ItemStack getItemHasPermission() {
         return itemHasPermission;
     }
 
+    @Nullable
     public ItemStack getItemNoPermission() {
         return itemNoPermission;
     }
 
+    @Nullable
     public ItemStack getItemWhenUsing() {
         return itemWhenUsing;
     }
 
+    public boolean isPublic() {
+        return getPermission() == null;
+    }
+
     public boolean isVisibleNoPermission() {
         return this.itemNoPermission != null;
     }

src/main/java/cc/carm/plugin/userprefix/ui/PrefixSelectGUI.java

@@ -1,13 +1,13 @@
 package cc.carm.plugin.userprefix.ui;
 
 import cc.carm.plugin.userprefix.configuration.PrefixConfig;
-import cc.carm.plugin.userprefix.util.MessageUtil;
-import cc.carm.plugin.userprefix.util.gui.GUIType;
 import cc.carm.plugin.userprefix.manager.PrefixManager;
 import cc.carm.plugin.userprefix.manager.UserManager;
 import cc.carm.plugin.userprefix.model.ConfiguredPrefix;
+import cc.carm.plugin.userprefix.util.MessageUtil;
 import cc.carm.plugin.userprefix.util.gui.AutoPagedGUI;
 import cc.carm.plugin.userprefix.util.gui.GUIItem;
+import cc.carm.plugin.userprefix.util.gui.GUIType;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.ClickType;
 
@@ -22,7 +22,7 @@ public class PrefixSelectGUI extends AutoPagedGUI {
     Player player;
 
     public PrefixSelectGUI(Player player) {
-        super(GUIType.SIXBYNINE, "&f&l我的前缀 &8| 列表", 10, 43);
+        super(GUIType.SIXBYNINE, PrefixConfig.GUI.TITLE.get(), 10, 43);
         this.player = player;
 
         setPreviousPageSlot(18);
@@ -38,7 +38,7 @@ public class PrefixSelectGUI extends AutoPagedGUI {
     public void loadItems() {
         List<ConfiguredPrefix> prefixList = new ArrayList<>();
         prefixList.add(PrefixManager.getDefaultPrefix());
-        prefixList.addAll(PrefixManager.getVisiblePrefix());
+        prefixList.addAll(PrefixManager.getVisiblePrefix()); //只需要读取看得见的
 
         ConfiguredPrefix usingPrefix = UserManager.getPrefix(getPlayer());
 
@@ -49,7 +49,8 @@ public class PrefixSelectGUI extends AutoPagedGUI {
                 addItem(new GUIItem(prefix.getItemHasPermission()) {
                     @Override
                     public void onClick(ClickType type) {
-                        if (UserManager.isPrefixUsable(player, prefix)) { //再次检查，防止打开GUI后、选择前的时间段内权限消失
+                        //再次检查，防止打开GUI后、选择前的时间段内权限消失
+                        if (UserManager.isPrefixUsable(player, prefix)) {
                             player.closeInventory();
                             UserManager.setPrefix(player, prefix, true);
 
@@ -71,7 +72,7 @@ public class PrefixSelectGUI extends AutoPagedGUI {
 
     @Override
     public void onClose() {
-        openingUsers.remove(player);
+        removeOpening(player);
     }
 
     public static void removeOpening(Player player) {
@@ -82,6 +83,7 @@ public class PrefixSelectGUI extends AutoPagedGUI {
         for (Player player : new HashSet<>(openingUsers)) {
             player.closeInventory();
         }
+        openingUsers.clear();
     }
 
     public static void open(Player player) {

src/main/resources/config.yml

@@ -6,6 +6,9 @@ functions:
   OnNamePrefix: true # 是否给头顶上添加前缀，该方法用到了头顶的那个计分板，如有冲突请关掉哦~
   autoUsePrefix: true # 自动前缀显示 当玩家没有自己选择一个前缀的时候，会自动使用所拥有的的前缀中权重最高的那一个
 
+GUI:
+  title: "&f&l我的前缀 &8| 列表"
+
 messages:
   selected:
     - "&7您选择了 &f%(name) &7作为当前显示的前缀。"