Add a com.sk89q.worldedit.bukkit.WorldEditPlugin.getSelection(Player player) method to return the user's current selection utilizing native Bukkit types.

src/com/sk89q/worldedit/LocalSession.java

@@ -231,6 +231,15 @@ public class LocalSession {
         }
         return selector.getRegion();
     }
+    
+    /**
+     * Get the selection world.
+     * 
+     * @return
+     */
+    public LocalWorld getSelectionWorld() {
+        return selectionWorld;
+    }
 
     /**
      * Gets the clipboard.

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

@@ -24,6 +24,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.logging.Logger;
+import org.bukkit.World;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
@@ -37,7 +38,8 @@ import com.sk89q.bukkit.migration.PermissionsResolverManager;
 import com.sk89q.bukkit.migration.PermissionsResolverServerListener;
 import com.sk89q.worldedit.*;
 import com.sk89q.worldedit.bags.BlockBag;
-import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.bukkit.selections.*;
+import com.sk89q.worldedit.regions.*;
 
 /**
  * Plugin for Bukkit.
@@ -246,19 +248,6 @@ public class WorldEditPlugin extends JavaPlugin {
         return controller.getSession(wrapPlayer(player));
     }
     
-    /**
-     * Gets the region selection for the player.
-     * 
-     * @param player
-     * @return
-     * @throws IncompleteRegionException 
-     */
-    public Region getPlayerSelection(Player player)
-            throws IncompleteRegionException {
-        return controller.getSession(wrapPlayer(player))
-                .getSelection(new BukkitWorld(player.getWorld()));
-    }
-    
     /**
      * Gets the session for the player.
      * 
@@ -351,4 +340,30 @@ public class WorldEditPlugin extends JavaPlugin {
     public BukkitPlayer wrapPlayer(Player player) {
         return new BukkitPlayer(this, this.server, player);
     }
+    
+    /**
+     * Gets the region selection for the player.
+     * 
+     * @param player
+     * @return the selection or null if there was none
+     */
+    public Selection getSelection(Player player) {
+        LocalSession session = controller.getSession(wrapPlayer(player));
+        RegionSelector selector = session.getRegionSelector();
+        
+        try {
+            Region region = selector.getRegion();
+            World world = ((BukkitWorld) session.getSelectionWorld()).getWorld();
+            
+            if (region instanceof CuboidRegion) {
+                return new CuboidSelection(world, (CuboidRegion)region);
+            } else if (region instanceof Polygonal2DRegion) {
+                return new Polygonal2DSelection(world, (Polygonal2DRegion)region);
+            } else {
+                return null;
+            }
+        } catch (IncompleteRegionException e) {
+            return null;
+        }
+    }
 }

src/com/sk89q/worldedit/bukkit/selections/CuboidSelection.java

@@ -0,0 +1,34 @@
+// $Id$
+/*
+ * 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.bukkit.selections;
+
+import org.bukkit.World;
+import com.sk89q.worldedit.regions.*;
+
+public class CuboidSelection extends RegionSelection {
+
+    protected CuboidRegion cuboid;
+    
+    public CuboidSelection(World world, CuboidRegion region) {
+        super(world, region);
+        this.world = world;
+        this.cuboid = region;
+    }
+}

src/com/sk89q/worldedit/bukkit/selections/Polygonal2DSelection.java

@@ -0,0 +1,34 @@
+// $Id$
+/*
+ * 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.bukkit.selections;
+
+import org.bukkit.World;
+import com.sk89q.worldedit.regions.*;
+
+public class Polygonal2DSelection extends RegionSelection {
+
+    protected Polygonal2DRegion poly2d;
+    
+    public Polygonal2DSelection(World world, Polygonal2DRegion region) {
+        super(world, region);
+        this.world = world;
+        this.poly2d = region;
+    }
+}

src/com/sk89q/worldedit/bukkit/selections/RegionSelection.java

@@ -0,0 +1,82 @@
+// $Id$
+/*
+ * 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.bukkit.selections;
+
+import static com.sk89q.worldedit.bukkit.BukkitUtil.toLocation;
+import static com.sk89q.worldedit.bukkit.BukkitUtil.toVector;
+import org.bukkit.Location;
+import org.bukkit.World;
+import com.sk89q.worldedit.regions.Region;
+
+public abstract class RegionSelection implements Selection {
+
+    protected World world;
+    protected Region region;
+    
+    public RegionSelection(World world, Region region) {
+        this.world = world;
+        this.region = region;
+    }
+
+    @Override
+    public Location getMinimumPoint() {
+        return toLocation(world, region.getMinimumPoint());
+    }
+
+    @Override
+    public Location getMaximumPoint() {
+        return toLocation(world, region.getMaximumPoint());
+    }
+
+    @Override
+    public World getWorld() {
+        return world;
+    }
+
+    @Override
+    public int getArea() {
+        return region.getArea();
+    }
+
+    @Override
+    public int getWidth() {
+        return region.getWidth();
+    }
+
+    @Override
+    public int getHeight() {
+        return region.getHeight();
+    }
+
+    @Override
+    public int getLength() {
+        return region.getLength();
+    }
+
+    @Override
+    public boolean contains(Location pt) {
+        if (!pt.getWorld().equals(world)) {
+            return false;
+        }
+        
+        return region.contains(toVector(pt));
+    }
+
+}

src/com/sk89q/worldedit/bukkit/selections/Selection.java

@@ -0,0 +1,82 @@
+// $Id$
+/*
+ * 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.bukkit.selections;
+
+import org.bukkit.Location;
+import org.bukkit.World;
+
+public interface Selection {
+    /**
+     * Get the lower point of a region.
+     * 
+     * @return min. point
+     */
+    public Location getMinimumPoint();
+    
+    /**
+     * Get the upper point of a region.
+     * 
+     * @return max. point
+     */
+    public Location getMaximumPoint();
+    
+    /**
+     * Get the world.
+     * 
+     * @return
+     */
+    public World getWorld();
+    
+    /**
+     * Get the number of blocks in the region.
+     * 
+     * @return number of blocks
+     */
+    public int getArea();
+    
+    /**
+     * Get X-size.
+     *
+     * @return width
+     */
+    public int getWidth();
+    
+    /**
+     * Get Y-size.
+     *
+     * @return height
+     */
+    public int getHeight();
+    
+    /**
+     * Get Z-size.
+     *
+     * @return length
+     */
+    public int getLength();
+    
+    /**
+     * Returns true based on whether the region contains the point,
+     *
+     * @param pt
+     * @return 
+     */
+    public boolean contains(Location pt);
+}