Added basic support for CUI.

src/com/sk89q/worldedit/LocalPlayer.java

@@ -22,6 +22,7 @@ package com.sk89q.worldedit;
 import java.io.File;
 import com.sk89q.worldedit.bags.BlockBag;
 import com.sk89q.worldedit.blocks.BlockType;
+import com.sk89q.worldedit.cui.CUIEvent;
 import com.sk89q.worldedit.util.TargetBlock;
 
 /**
@@ -575,6 +576,20 @@ public abstract class LocalPlayer {
         return hasPermission("worldedit.override.bedrock");
     }
     
+    /**
+     * Send a CUI event.
+     * 
+     * @param event
+     */
+    public void dispatchCUIEvent(CUIEvent event) {
+    }
+    
+    /**
+     * Send the CUI handshake.
+     */
+    public void dispatchCUIHandshake() {
+    }
+
     /**
      * Returns true if equal.
      *

src/com/sk89q/worldedit/LocalSession.java

@@ -28,6 +28,10 @@ import com.sk89q.worldedit.tools.SinglePickaxe;
 import com.sk89q.worldedit.tools.BlockTool;
 import com.sk89q.worldedit.tools.Tool;
 import com.sk89q.worldedit.bags.BlockBag;
+import com.sk89q.worldedit.cui.CUIPointBasedRegion;
+import com.sk89q.worldedit.cui.CUIEvent;
+import com.sk89q.worldedit.cui.SelectionPointEvent;
+import com.sk89q.worldedit.cui.SelectionShapeEvent;
 import com.sk89q.worldedit.regions.CuboidRegionSelector;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.regions.RegionSelector;
@@ -53,7 +57,7 @@ public class LocalSession {
     private LocalConfiguration config;
     
     private LocalWorld selectionWorld;
-    private RegionSelector regionSelector = new CuboidRegionSelector();
+    private RegionSelector selector = new CuboidRegionSelector();
     private boolean placeAtPos1 = false;
     private LinkedList<EditSession> history = new LinkedList<EditSession>();
     private int historyPointer = 0;
@@ -69,6 +73,7 @@ public class LocalSession {
     private String lastScript;
     private CompassMode compassMode = CompassMode.JUMPTO;
     private boolean beenToldVersion = false;
+    private boolean hasCUISupport = false;
     
     /**
      * Construct the object.
@@ -159,9 +164,9 @@ public class LocalSession {
             selectionWorld = world;
         } else if (!selectionWorld.equals(world)) {
             selectionWorld = world;
-            regionSelector.clear();
+            selector.clear();
         }
-        return regionSelector;
+        return selector;
     }
 
     /**
@@ -171,7 +176,7 @@ public class LocalSession {
      * @return position
      */
     public RegionSelector getRegionSelector() {
-        return regionSelector;
+        return selector;
     }
 
     /**
@@ -182,7 +187,7 @@ public class LocalSession {
      */
     public void setRegionSelector(LocalWorld world, RegionSelector selector) {
         selectionWorld = world;
-        regionSelector = selector;
+        this.selector = selector;
     }
 
     /**
@@ -192,7 +197,7 @@ public class LocalSession {
      */
     @Deprecated
     public boolean isRegionDefined() {
-        return regionSelector.isDefined();
+        return selector.isDefined();
     }
 
     /**
@@ -205,7 +210,7 @@ public class LocalSession {
         if (selectionWorld == null || !selectionWorld.equals(world)) {
             return false;
         }
-        return regionSelector.isDefined();
+        return selector.isDefined();
     }
 
     /**
@@ -216,7 +221,7 @@ public class LocalSession {
      */
     @Deprecated
     public Region getRegion() throws IncompleteRegionException {
-        return regionSelector.getRegion();
+        return selector.getRegion();
     }
 
     /**
@@ -233,7 +238,7 @@ public class LocalSession {
         if (selectionWorld == null || !selectionWorld.equals(world)) {
             throw new IncompleteRegionException();
         }
-        return regionSelector.getRegion();
+        return selector.getRegion();
     }
 
     /**
@@ -340,7 +345,7 @@ public class LocalSession {
             return player.getBlockIn();
         }
 
-        return regionSelector.getPrimaryPosition();
+        return selector.getPrimaryPosition();
     }
 
     /**
@@ -519,4 +524,55 @@ public class LocalSession {
             }
         }
     }
+    
+    /**
+     * Dispatch a CUI event but only if the player has CUI support.
+     * 
+     * @param player
+     * @param event
+     */
+    public void dispatchCUIEvent(LocalPlayer player, CUIEvent event) {
+        if (hasCUISupport) {
+            player.dispatchCUIEvent(event);
+        }
+    }
+    
+    /**
+     * Dispatch the initial setup CUI messages.
+     * 
+     * @param player
+     */
+    public void dispatchCUISetup(LocalPlayer player) {
+        if (!hasCUISupport) {
+            return;
+        }
+        
+        if (selector != null) {
+            player.dispatchCUIEvent(
+                    new SelectionShapeEvent(selector.getTypeId()));
+            
+            if (selector instanceof CUIPointBasedRegion) {
+                Vector[] points = ((CUIPointBasedRegion) selector).getCUIPoints();
+                int size = selector.getArea();
+                
+                int i = 0;
+                for (Vector pt : points) {
+                    if (pt != null) {
+                        player.dispatchCUIEvent(
+                                new SelectionPointEvent(i, pt, size));
+                    }
+                    i++;
+                }
+            }
+        }
+    }
+    
+    /**
+     * Sets the status of CUI support.
+     * 
+     * @param support
+     */
+    public void setCUISupport(boolean support) {
+        hasCUISupport = true;
+    }
 }

src/com/sk89q/worldedit/WorldEdit.java

@@ -820,7 +820,7 @@ public class WorldEdit {
                 && player.hasPermission("worldedit.selection.pos")) {
             RegionSelector selector = session.getRegionSelector(player.getWorld());
             if (selector.selectSecondary(clicked)) {
-                selector.explainSecondarySelection(player, clicked);
+                selector.explainSecondarySelection(player, session, clicked);
             }
 
             return true;
@@ -857,7 +857,7 @@ public class WorldEdit {
 
                 RegionSelector selector = session.getRegionSelector(player.getWorld());
                 if (selector.selectPrimary(clicked)) {
-                    selector.explainPrimarySelection(player, clicked);
+                    selector.explainPrimarySelection(player, session, clicked);
                 }
 
                 return true;

src/com/sk89q/worldedit/bukkit/BukkitPlayer.java

@@ -22,8 +22,10 @@ package com.sk89q.worldedit.bukkit;
 import org.bukkit.*;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
+import com.sk89q.util.StringUtil;
 import com.sk89q.worldedit.*;
 import com.sk89q.worldedit.bags.BlockBag;
+import com.sk89q.worldedit.cui.CUIEvent;
 
 public class BukkitPlayer extends LocalPlayer {
     private Player player;
@@ -114,4 +116,21 @@ public class BukkitPlayer extends LocalPlayer {
     public LocalWorld getWorld() {
         return new BukkitWorld(player.getWorld());
     }
+    
+    @Override
+    public void dispatchCUIEvent(CUIEvent event) {
+        String[] params = event.getParameters();
+        
+        if (params.length > 0) {
+            printRaw("\u00A75\u00A76\u00A74\u00A75" + event.getTypeId()
+                    + "|" + StringUtil.joinString(params, "|"));
+        } else {
+            printRaw("\u00A75\u00A76\u00A74\u00A75" + event.getTypeId());
+        }
+    }
+    
+    @Override
+    public void dispatchCUIHandshake() {
+        printRaw("\u00A75\u00A76\u00A74\u00A75");
+    }
 }

src/com/sk89q/worldedit/bukkit/WorldEditCriticalPlayerListener.java

@@ -0,0 +1,57 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit.bukkit;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.player.PlayerEvent;
+import org.bukkit.event.player.PlayerListener;
+
+/**
+ * Handles all events thrown in relation to a Player
+ */
+public class WorldEditCriticalPlayerListener extends PlayerListener {
+    /**
+     * Plugin.
+     */
+    private WorldEditPlugin plugin;
+    
+    /**
+     * Construct the object;
+     * 
+     * @param plugin
+     */
+    public WorldEditCriticalPlayerListener(WorldEditPlugin plugin) {
+        this.plugin = plugin;
+    }
+
+    /**
+     * Called when a player joins a server
+     *
+     * @param event Relevant event details
+     */
+    @Override
+    public void onPlayerJoin(PlayerEvent event) {
+        wrapPlayer(event.getPlayer()).dispatchCUIHandshake();
+    }
+    
+    private BukkitPlayer wrapPlayer(Player player) {
+        return new BukkitPlayer(plugin, plugin.server, player);
+    }
+}

src/com/sk89q/worldedit/bukkit/WorldEditPlugin.java

@@ -123,6 +123,7 @@ public class WorldEditPlugin extends JavaPlugin {
      */
     protected void registerEvents() {        
         PlayerListener playerListener = new WorldEditPlayerListener(this);
+        PlayerListener criticalPlayerListener = new WorldEditCriticalPlayerListener(this);
         BlockListener blockListener = new WorldEditBlockListener(this);
         
         registerEvent(Event.Type.PLAYER_QUIT, playerListener);
@@ -131,6 +132,7 @@ public class WorldEditPlugin extends JavaPlugin {
         registerEvent(Event.Type.PLAYER_COMMAND_PREPROCESS, playerListener);
         registerEvent(Event.Type.BLOCK_DAMAGED, blockListener);
         registerEvent(Event.Type.BLOCK_RIGHTCLICKED, blockListener);
+        registerEvent(Event.Type.PLAYER_JOIN, criticalPlayerListener, Priority.Lowest);
         
         // The permissions resolver has some hooks of its own
         (new PermissionsResolverServerListener(perms)).register(this);

src/com/sk89q/worldedit/commands/SelectionCommands.java

@@ -58,7 +58,7 @@ public class SelectionCommands {
         }
 
         session.getRegionSelector(player.getWorld())
-                .explainPrimarySelection(player, player.getBlockIn());
+                .explainPrimarySelection(player, session, player.getBlockIn());
     }
 
     @Command(
@@ -81,7 +81,7 @@ public class SelectionCommands {
 
 
         session.getRegionSelector(player.getWorld())
-                .explainSecondarySelection(player, player.getBlockIn());
+                .explainSecondarySelection(player, session, player.getBlockIn());
     }
 
     @Command(
@@ -106,7 +106,7 @@ public class SelectionCommands {
             }
 
             session.getRegionSelector(player.getWorld())
-                    .explainPrimarySelection(player, pos);
+                    .explainPrimarySelection(player, session, pos);
         } else {
             player.printError("No block in sight!");
         }
@@ -134,7 +134,7 @@ public class SelectionCommands {
             }
 
             session.getRegionSelector(player.getWorld())
-                    .explainSecondarySelection(player, pos);
+                    .explainSecondarySelection(player, session, pos);
         } else {
             player.printError("No block in sight!");
         }

src/com/sk89q/worldedit/commands/WorldEditCommands.java

@@ -59,4 +59,18 @@ public class WorldEditCommands {
         we.getServer().reload();
         player.print("Configuration reloaded!");
     }
+
+    @Command(
+        aliases = {"cui"},
+        usage = "",
+        desc = "Complete CUI handshake",
+        min = 0,
+        max = 0
+    )
+    public static void cui(CommandContext args, WorldEdit we,
+            LocalSession session, LocalPlayer player, EditSession editSession)
+            throws WorldEditException {
+        session.setCUISupport(true);
+        session.dispatchCUISetup(player);
+    }
 }

src/com/sk89q/worldedit/cui/CUIEvent.java

@@ -0,0 +1,25 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010, 2011 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit.cui;
+
+public interface CUIEvent {
+    public String getTypeId();
+    public String[] getParameters();
+}

src/com/sk89q/worldedit/cui/CUIPointBasedRegion.java

@@ -0,0 +1,26 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010, 2011 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit.cui;
+
+import com.sk89q.worldedit.Vector;
+
+public interface CUIPointBasedRegion {
+    public Vector[] getCUIPoints();
+}

src/com/sk89q/worldedit/cui/SelectionPointEvent.java

@@ -0,0 +1,52 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010, 2011 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit.cui;
+
+import com.sk89q.worldedit.Vector;
+
+public class SelectionPointEvent implements CUIEvent {
+
+    protected int id;
+    protected Vector pos;
+    protected int area;
+    
+    public SelectionPointEvent(int id, Vector pos, int area) {
+        this.id = id;
+        this.pos = pos;
+        this.area = area;
+    }
+
+    @Override
+    public String getTypeId() {
+        return "p";
+    }
+
+    @Override
+    public String[] getParameters() {
+        return new String[] {
+                    String.valueOf(id),
+                    String.valueOf(pos.getBlockX()),
+                    String.valueOf(pos.getBlockY()),
+                    String.valueOf(pos.getBlockZ()),
+                    String.valueOf(area)
+                };
+    }
+
+}

src/com/sk89q/worldedit/cui/SelectionShapeEvent.java

@@ -0,0 +1,40 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010, 2011 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit.cui;
+
+public class SelectionShapeEvent implements CUIEvent {
+    
+    protected String shapeName;
+    
+    public SelectionShapeEvent(String shapeName) {
+        this.shapeName = shapeName;
+    }
+
+    @Override
+    public String getTypeId() {
+        return "s";
+    }
+
+    @Override
+    public String[] getParameters() {
+        return new String[] { shapeName };
+    }
+
+}

src/com/sk89q/worldedit/regions/CuboidRegionSelector.java

@@ -24,14 +24,17 @@ import java.util.List;
 import com.sk89q.worldedit.BlockVector;
 import com.sk89q.worldedit.IncompleteRegionException;
 import com.sk89q.worldedit.LocalPlayer;
+import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.cui.CUIPointBasedRegion;
+import com.sk89q.worldedit.cui.SelectionPointEvent;
 
 /**
  * Selector for cuboids.
  *
  * @author sk89q
  */
-public class CuboidRegionSelector implements RegionSelector {
+public class CuboidRegionSelector implements RegionSelector, CUIPointBasedRegion {
     protected BlockVector pos1;
     protected BlockVector pos2;
     protected CuboidRegion region = new CuboidRegion(new Vector(), new Vector());
@@ -54,22 +57,30 @@ public class CuboidRegionSelector implements RegionSelector {
         return true;
     }
 
-    public void explainPrimarySelection(LocalPlayer player, Vector pos) {
+    public void explainPrimarySelection(LocalPlayer player,
+            LocalSession session, Vector pos) {
         if (pos1 != null && pos2 != null) {
             player.print("First position set to " + pos1
                     + " (" + region.getArea() + ").");
         } else {
             player.print("First position set to " + pos1 + ".");
         }
+        
+        session.dispatchCUIEvent(player,
+                new SelectionPointEvent(0, pos, getArea()));
     }
 
-    public void explainSecondarySelection(LocalPlayer player, Vector pos) {
+    public void explainSecondarySelection(LocalPlayer player,
+            LocalSession session, Vector pos) {
         if (pos1 != null && pos2 != null) {
             player.print("Second position set to " + pos2
                     + " (" + region.getArea() + ").");
         } else {
             player.print("Second position set to " + pos2 + ".");
         }
+        
+        session.dispatchCUIEvent(player,
+                new SelectionPointEvent(1, pos, getArea()));
     }
     
     public BlockVector getPrimaryPosition() throws IncompleteRegionException {
@@ -119,4 +130,20 @@ public class CuboidRegionSelector implements RegionSelector {
         
         return lines;
     }
+
+    public String getTypeId() {
+        return "cuboid";
+    }
+
+    public Vector[] getCUIPoints() {
+        return new Vector[] { pos1, pos2 };
+    }
+
+    public int getArea() {
+        if (pos1 != null && pos2 != null) {
+            return region.getArea();
+        }
+        
+        return -1;
+    }
 }

src/com/sk89q/worldedit/regions/Polygonal2DRegionSelector.java

@@ -25,6 +25,7 @@ import com.sk89q.worldedit.BlockVector;
 import com.sk89q.worldedit.BlockVector2D;
 import com.sk89q.worldedit.IncompleteRegionException;
 import com.sk89q.worldedit.LocalPlayer;
+import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.Vector;
 
 /**
@@ -66,11 +67,13 @@ public class Polygonal2DRegionSelector implements RegionSelector {
         return true;
     }
 
-    public void explainPrimarySelection(LocalPlayer player, Vector pos) {
+    public void explainPrimarySelection(LocalPlayer player,
+            LocalSession session, Vector pos) {
         player.print("Starting a new polygon at " + pos + ".");
     }
 
-    public void explainSecondarySelection(LocalPlayer player, Vector pos) {
+    public void explainSecondarySelection(LocalPlayer player,
+            LocalSession session, Vector pos) {
         player.print("Added point #" + region.size() + " at " + pos + ".");
     }
 
@@ -111,4 +114,12 @@ public class Polygonal2DRegionSelector implements RegionSelector {
         return lines;
     }
 
+    public String getTypeId() {
+        return "polygon2d";
+    }
+
+    public int getArea() {
+        return region.getArea();
+    }
+
 }

src/com/sk89q/worldedit/regions/RegionSelector.java

@@ -23,6 +23,7 @@ import java.util.List;
 import com.sk89q.worldedit.BlockVector;
 import com.sk89q.worldedit.IncompleteRegionException;
 import com.sk89q.worldedit.LocalPlayer;
+import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.Vector;
 
 /**
@@ -51,17 +52,21 @@ public interface RegionSelector {
      * Tell the player information about his/her primary selection.
      * 
      * @param player
+     * @param session 
      * @param pos 
      */
-    public void explainPrimarySelection(LocalPlayer player, Vector pos);
+    public void explainPrimarySelection(LocalPlayer player, 
+            LocalSession session, Vector pos);
 
     /**
      * Tell the player information about his/her secondary selection.
      * 
      * @param player
+     * @param session 
      * @param pos 
      */
-    public void explainSecondarySelection(LocalPlayer player, Vector pos);
+    public void explainSecondarySelection(LocalPlayer player,
+            LocalSession session, Vector pos);
     
     /**
      * Get the primary position.
@@ -86,6 +91,13 @@ public interface RegionSelector {
      */
     public boolean isDefined();
     
+    /**
+     * Get the number of blocks inside the region.
+     * 
+     * @return number of blocks or -1 if undefined
+     */
+    public int getArea();
+    
     /**
      * Update the selector with changes to the region.
      */
@@ -103,6 +115,13 @@ public interface RegionSelector {
      */
     public String getTypeName();
     
+    /**
+     * Get a lowecase space-less ID.
+     * 
+     * @return
+     */
+    public String getTypeId();
+    
     /**
      * Get lines of information about the selection.
      *