Adding ability to save /back location from teleport events outside essentilals

New config setting to turn this on "register-back-in-listener"
Test #1200
CB#1560 / B#1055

Essentials/src/com/earth2me/essentials/Essentials.java

@@ -56,13 +56,12 @@ import org.bukkit.plugin.PluginDescriptionFile;
 import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.bukkit.scheduler.BukkitScheduler;
-import org.yaml.snakeyaml.Yaml;
 import org.yaml.snakeyaml.error.YAMLException;
 
 
 public class Essentials extends JavaPlugin implements IEssentials
 {
-	public static final int BUKKIT_VERSION = 1538;
+	public static final int BUKKIT_VERSION = 1560;
 	private static final Logger LOGGER = Logger.getLogger("Minecraft");
 	private transient ISettings settings;
 	private final transient TNTExplodeListener tntListener = new TNTExplodeListener(this);

Essentials/src/com/earth2me/essentials/EssentialsPlayerListener.java

@@ -20,6 +20,8 @@ import org.bukkit.entity.Player;
 import org.bukkit.event.block.Action;
 import org.bukkit.event.player.PlayerLoginEvent.Result;
 import org.bukkit.event.player.*;
+import org.bukkit.event.player.PlayerTeleportEvent;
+import org.bukkit.event.player.PlayerTeleportEvent.TeleportCause;
 import org.bukkit.inventory.ItemStack;
 
 
@@ -225,12 +227,19 @@ public class EssentialsPlayerListener extends PlayerListener
 
 	@Override
 	public void onPlayerTeleport(PlayerTeleportEvent event)
-	{
+	{			
 		if (event.isCancelled())
 		{
 			return;
 		}
-		final User user = ess.getUser(event.getPlayer());
+		
+		final User user = ess.getUser(event.getPlayer());			
+		//There is TeleportCause.COMMMAND but plugins have to actively pass the cause in on their teleports.
+		if(event.getCause() == TeleportCause.PLUGIN && ess.getSettings().registerBackInListener())
+		{
+			user.setLastLocation();
+		}
+		
 		if (ess.getSettings().changeDisplayName())
 		{
 			user.setDisplayNick();

Essentials/src/com/earth2me/essentials/ISettings.java

@@ -144,4 +144,6 @@ public interface ISettings extends IConf
 	boolean getRepairEnchanted();
 	
 	boolean getIsWorldTeleportPermissions();
+	
+	boolean registerBackInListener();
 }

Essentials/src/com/earth2me/essentials/OfflinePlayer.java

@@ -12,6 +12,7 @@ import org.bukkit.*;
 import org.bukkit.block.Block;
 import org.bukkit.entity.*;
 import org.bukkit.event.entity.EntityDamageEvent;
+import org.bukkit.event.player.PlayerTeleportEvent.TeleportCause;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.PlayerInventory;
 import org.bukkit.map.MapView;
@@ -803,4 +804,16 @@ public class OfflinePlayer implements Player
 	{
 		throw new UnsupportedOperationException("Not supported yet.");
 	}
+
+	@Override
+	public boolean teleport(Location lctn, TeleportCause tc)
+	{
+		throw new UnsupportedOperationException("Not supported yet.");
+	}
+
+	@Override
+	public boolean teleport(Entity entity, TeleportCause tc)
+	{
+		throw new UnsupportedOperationException("Not supported yet.");
+	}
 }

Essentials/src/com/earth2me/essentials/Settings.java

@@ -566,4 +566,10 @@ public class Settings implements ISettings
 	{
 		return config.getBoolean("world-teleport-permissions", false);
 	}
+	
+	@Override
+	public boolean registerBackInListener()
+	{
+		return config.getBoolean("register-back-in-listener", false);
+	}
 }

Essentials/src/config.yml

@@ -239,6 +239,10 @@ oversized-stacksize: 64
 # essentials.repair.enchanted
 repair-enchanted: true
 
+#Do you want essentials to keep track of previous location for /back in the teleport listener?
+#If you set this to true any plugin that uses teleport will have the previous location registered.
+register-back-in-listener: false
+
 ############################################################
 # +------------------------------------------------------+ #
 # |                   EssentialsHome                     | #

Essentials/test/com/earth2me/essentials/FakeServer.java

@@ -593,4 +593,10 @@ public class FakeServer implements Server
 	{
 		throw new UnsupportedOperationException("Not supported yet.");
 	}
+
+	@Override
+	public OfflinePlayer[] getOfflinePlayers()
+	{
+		throw new UnsupportedOperationException("Not supported yet.");
+	}
 }