Toggleable team chat. Closes gh-317.

Sorry @grinning, I tried to cherry pick your stuff but it did not work _at all_.

war/src/main/java/com/tommytony/war/Team.java

@@ -10,6 +10,7 @@ import java.util.Map.Entry;
 import java.util.Random;
 import java.util.logging.Level;
 
+import org.apache.commons.lang.Validate;
 import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.Location;
@@ -43,6 +44,7 @@ import com.tommytony.war.volume.Volume;
  */
 public class Team {
 	private List<Player> players = new ArrayList<Player>();
+    private List<Player> teamChatPlayers = new ArrayList<Player>();
 	private List<Location> teamSpawns;
 	private Location teamFlag = null;
 	private String name;
@@ -450,6 +452,9 @@ public class Team {
 
 	public void removePlayer(Player thePlayer) {
 		this.players.remove(thePlayer);
+        synchronized (teamChatPlayers) {
+            this.teamChatPlayers.remove(thePlayer);
+        }
 		this.warzone.dropAllStolenObjects(thePlayer, false);
 		if (War.war.isTagServer()) {
 			TagAPI.refreshPlayer(thePlayer);
@@ -757,4 +762,52 @@ public class Team {
 		}
 		return false;
 	}
+
+    /**
+     * Send a team chat message with proper formatting.
+     *
+     * @param sender Player sending the message
+     * @param message Message to send
+     */
+    public void sendTeamChatMessage(OfflinePlayer sender, String message) {
+        String player = this.getKind().getColor() + ChatColor.stripColor(sender.getName()) + ChatColor.WHITE;
+        String output = String.format("%s: %s", player, message);
+        teamcast(output, false);
+        War.war.getLogger().info("[TeamChat] " + output);
+    }
+
+    /**
+     * Check if a player on this team has toggled on team chat. Thread safe.
+     *
+     * @param player Player to check
+     * @return true if the player has toggled on team chat
+     */
+    public boolean isInTeamChat(Player player) {
+        synchronized (teamChatPlayers) {
+            return this.teamChatPlayers.contains(player);
+        }
+    }
+
+    /**
+     * Add a player to team chat. Thread safe.
+     * @param player Player to add
+     * @throws IllegalArgumentException Player is already in team chat
+     */
+    public void addTeamChatPlayer(Player player) {
+        Validate.isTrue(!isInTeamChat(player), "Player is already in team chat");
+        synchronized (teamChatPlayers) {
+            this.teamChatPlayers.add(player);
+        }
+    }
+
+    /**
+     * Remove a player from team chat. Thread safe.
+     *
+     * @param player Player to remove
+     */
+    public void removeTeamChatPlayer(Player player) {
+        synchronized (teamChatPlayers) {
+            this.teamChatPlayers.remove(player);
+        }
+    }
 }

war/src/main/java/com/tommytony/war/command/TeamCommand.java

@@ -30,13 +30,22 @@ public class TeamCommand extends AbstractWarCommand {
 			return false;
 		}
 
-		ChatColor color = playerTeam.getKind().getColor();
-		String teamMessage = color + player.getName() + ": " + ChatColor.WHITE;
-		for (String part : this.args) {
-			teamMessage += part + " ";
-		}
-		playerTeam.teamcast(teamMessage, false);
+        if (this.args.length < 1) {
+            if (playerTeam.isInTeamChat(player)) {
+                playerTeam.removeTeamChatPlayer(player);
+                this.msg("team.chat.disable");
+            } else {
+                playerTeam.addTeamChatPlayer(player);
+                this.msg("team.chat.enable");
+            }
+            return true;
+        }
 
+		StringBuilder teamMessage = new StringBuilder();
+		for (String part : this.args) {
+			teamMessage.append(part).append(' ');
+		}
+        playerTeam.sendTeamChatMessage(player, teamMessage.toString());
 		return true;
 	}
 }

war/src/main/java/com/tommytony/war/event/WarPlayerListener.java

@@ -17,15 +17,7 @@ import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.Action;
-import org.bukkit.event.player.PlayerCommandPreprocessEvent;
-import org.bukkit.event.player.PlayerDropItemEvent;
-import org.bukkit.event.player.PlayerInteractEvent;
-import org.bukkit.event.player.PlayerKickEvent;
-import org.bukkit.event.player.PlayerMoveEvent;
-import org.bukkit.event.player.PlayerPickupItemEvent;
-import org.bukkit.event.player.PlayerQuitEvent;
-import org.bukkit.event.player.PlayerRespawnEvent;
-import org.bukkit.event.player.PlayerToggleSneakEvent;
+import org.bukkit.event.player.*;
 import org.bukkit.inventory.ItemStack;
 import org.getspout.spoutapi.SpoutManager;
 import org.getspout.spoutapi.player.SpoutPlayer;
@@ -51,9 +43,6 @@ import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.logging.Level;
 
-import org.bukkit.event.player.PlayerTeleportEvent;
-import org.bukkit.event.player.PlayerExpChangeEvent;
-
 /**
  * @author tommytony, Tim Düsterhus
  * @package bukkit.tommytony.war
@@ -884,6 +873,15 @@ public class WarPlayerListener implements Listener {
 		}
 	}
 
+    @EventHandler(priority = EventPriority.LOW)
+    public void onPlayerChat(final AsyncPlayerChatEvent event) {
+        Team team = Team.getTeamByPlayerName(event.getPlayer().getName());
+        if (team != null && team.isInTeamChat(event.getPlayer())) {
+            event.setCancelled(true);
+            team.sendTeamChatMessage(event.getPlayer(), event.getMessage());
+        }
+    }
+
 	public void purgeLatestPositions() {
 		this.latestLocations.clear();	
 	}

war/src/main/resources/messages.properties

@@ -71,6 +71,9 @@ sign.team.unlimited   = Team {0}\n{1}/{2} players\n{3}/{4} pts\nunlimited lives
 sign.warhub           = War hub\n(/warhub)\nPick your\nbattle!
 sign.warzone          = Warzone\n{0}\n{1}/{2} players\n{3} teams
 
+team.chat.enable  = Team chat toggled on. Your regular chat messages will be received by your team only.
+team.chat.disable = Team chat toggled off.
+
 use.anvil       = You can't use anvils in this warzone!
 use.enchant     = You can't use enchantment tables in this warzone!
 use.ender       = You can't use ender chests while playing in a warzone!