First "release"

README.md

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+# WBFillPause
+
+WBFillPause is a small plugin for [Spigot](https://www.spigotmc.org) Minecraft servers. It simply pause [WorldBorder's fill command](https://www.spigotmc.org/threads/worldborder.339635/#post-3162182) when a player join the server, then resume when nobody is online.
+
+## How to install
+
+Simply drop the jar file into your plugin directory, then restart (or reload) your server.
+
+You can download the last release here: [WBFillPause.jar](https://github.com/arboriginal/WBFillPause/releases).
+
+## Permissions
+
+ - **wbfp.bypass**: Players with this permission will not pause the fill command.
+   (default: op)
+
+## Note
+
+The fill command doesn't resume immediately when the player disconnect, but after 15 seconds. It prevent to re-launch the process if the player had a short connection loss.

src/me/arboriginal/WBFillPause/Main.java

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+package me.arboriginal.WBFillPause;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.plugin.java.JavaPlugin;
+import org.bukkit.scheduler.BukkitRunnable;
+import com.wimbli.WorldBorder.Config;
+
+public class Main extends JavaPlugin implements Listener {
+  public static BukkitRunnable task;
+
+  @Override
+  public void onEnable() {
+    getServer().getPluginManager().registerEvents(this, this);
+  }
+
+  @Override
+  public void onDisable() {
+    super.onDisable();
+
+    HandlerList.unregisterAll((JavaPlugin) this);
+  }
+
+  @EventHandler
+  public void onPlayerJoin(PlayerJoinEvent event) {
+    if (playerBypass(event.getPlayer())) return;
+
+    if (WBFill(false)) {
+      Config.fillTask.pause();
+      getLogger().info("================== WorldBorder fill => Pause ==================");
+    }
+  }
+
+  @EventHandler
+  public void onPlayerQuit(PlayerQuitEvent event) {
+    if (WBFill(true)) {
+      if (task != null) task.cancel();
+
+      task = new BukkitRunnable() {
+        @Override
+        public void run() {
+          for (Player player : getServer().getOnlinePlayers()) {
+            if (!playerBypass(player)) return;
+          }
+
+          Config.fillTask.pause(false);
+          getLogger().info("================== WorldBorder fill => Resume ==================");
+          task = null;
+        }
+      };
+
+      task.runTaskLater(this, 300);
+    }
+  }
+
+  private boolean playerBypass(Player player) {
+    return player.hasPermission("wbfp.bypass");
+  }
+
+  private boolean WBFill(boolean paused) {
+    return ((Config.fillTask != null) && Config.fillTask.valid() && (Config.fillTask.isPaused() == paused));
+  }
+}

src/plugin.yml

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+name: WBFillPause
+description: Suspend your Worlborder fill command when a player join.
+version: 0.1
+
+author: arboriginal
+website: https://github.com/arboriginal
+dev-url: https://github.com/arboriginal/WBFillPause
+
+depend: [ WorldBorder ]
+softdepend: [ ]
+
+api-version: 1.13
+database: false
+
+main: me.arboriginal.WBFillPause.Main
+
+permissions:
+  wbfp.bypass:
+    description: DO NOT pause the worldborder fill on join.
+    default: op
+