Add cuiVersion to LocalSession and set it via incoming CUI event

Refactor region selectors to handle legacy versions a bit better.
Because chat doesn't allow the section sign to be sent, I have to send non-color codes. Meh.
closes #158

src/main/java/com/sk89q/worldedit/LocalSession.java

@@ -34,7 +34,7 @@ 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.CUIRegion;
 import com.sk89q.worldedit.cui.CUIEvent;
 import com.sk89q.worldedit.cui.SelectionShapeEvent;
 import com.sk89q.worldedit.masks.Mask;
@@ -71,6 +71,7 @@ public class LocalSession {
     private String lastScript;
     private boolean beenToldVersion = false;
     private boolean hasCUISupport = false;
+    private int cuiVersion = -1;
     private boolean fastMode = false;
     private Mask mask;
     private TimeZone timezone = TimeZone.getDefault();
@@ -570,14 +571,34 @@ public class LocalSession {
             return;
         }
 
-        final String legacyTypeId = selector.getLegacyTypeId();
-        if (legacyTypeId != null) {
-            player.dispatchCUIEvent(new SelectionShapeEvent(legacyTypeId));
-        }
-        player.dispatchCUIEvent(new SelectionShapeEvent(selector.getTypeId()));
+        if (selector instanceof CUIRegion) {
+            CUIRegion tempSel = (CUIRegion) selector;
+
+            if (tempSel.getProtocolVersion() > cuiVersion) {
+                player.dispatchCUIEvent(new SelectionShapeEvent(tempSel.getLegacyTypeID()));
+                tempSel.describeLegacyCUI(this, player);
+            } else {
+                player.dispatchCUIEvent(new SelectionShapeEvent(tempSel.getTypeID()));
+                tempSel.describeCUI(this, player);
+            }
+
+        }
+    }
+    
+    public void describeCUI(LocalPlayer player) {
+        if (!hasCUISupport) {
+            return;
+        }
+
+        if (selector instanceof CUIRegion) {
+            CUIRegion tempSel = (CUIRegion) selector;
+
+            if (tempSel.getProtocolVersion() > cuiVersion) {
+                tempSel.describeLegacyCUI(this, player);
+            } else {
+                tempSel.describeCUI(this, player);
+            }
 
-        if (selector instanceof CUIPointBasedRegion) {
-            ((CUIPointBasedRegion) selector).describeCUI(player);
         }
     }
 
@@ -599,6 +620,24 @@ public class LocalSession {
         hasCUISupport = true;
     }
 
+    /**
+     * Gets the client's CUI protocol version
+     * 
+     * @return 
+     */
+    public int getCUIVersion() {
+        return cuiVersion;
+    }
+
+    /**
+     * Sets the client's CUI protocol version
+     * 
+     * @param CUIVersion 
+     */
+    public void setCUIVersion(int CUIVersion) {
+        this.cuiVersion = CUIVersion;
+    }
+
     /**
      * Detect date from a user's input.
      *

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

@@ -140,8 +140,8 @@ public class BukkitPlayer extends LocalPlayer {
 
     @Override
     public void dispatchCUIHandshake() {
-        player.sendRawMessage("\u00A74\u00A75\u00A73\u00A74");
         player.sendRawMessage("\u00A75\u00A76\u00A74\u00A75");
+        player.sendRawMessage("\u00A74\u00A75\u00A73\u00A74");
     }
 
     public Player getPlayer() {

src/main/java/com/sk89q/worldedit/bukkit/WorldEditPlayerListener.java

@@ -24,6 +24,7 @@ import org.bukkit.Bukkit;
 import org.bukkit.block.Block;
 import org.bukkit.event.Event;
 import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerChatEvent;
 import org.bukkit.event.player.PlayerCommandPreprocessEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
 import org.bukkit.event.player.PlayerListener;
@@ -32,15 +33,17 @@ import com.sk89q.worldedit.LocalPlayer;
 import com.sk89q.worldedit.LocalWorld;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.WorldVector;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * Handles all events thrown in relation to a Player
  */
 public class WorldEditPlayerListener extends PlayerListener {
-    /**
-     * Plugin.
-     */
+    
     private WorldEditPlugin plugin;
+    private boolean ignoreLeftClickAir = false;
+    private final static Pattern cuipattern = Pattern.compile("u00a74u00a75u00a73u00a74([^|]*)\\|?(.*)");
 
     /**
      * Called when a player plays an animation, such as an arm swing
@@ -59,6 +62,7 @@ public class WorldEditPlayerListener extends PlayerListener {
         plugin.registerEvent("PLAYER_QUIT", this);
         plugin.registerEvent("PLAYER_INTERACT", this);
         plugin.registerEvent("PLAYER_COMMAND_PREPROCESS", this, Event.Priority.Low);
+        plugin.registerEvent("PLAYER_CHAT", this);
     }
 
     /**
@@ -92,8 +96,6 @@ public class WorldEditPlayerListener extends PlayerListener {
         event.setMessage(StringUtil.joinString(split, " "));
     }
 
-    private boolean ignoreLeftClickAir = false;
-
     /**
      * Called when a player interacts
      *
@@ -162,4 +164,26 @@ public class WorldEditPlayerListener extends PlayerListener {
             }
         }
     }
+
+    @Override
+    public void onPlayerChat(PlayerChatEvent event) {
+        if (event.isCancelled()) {
+            return;
+        }
+        
+        Matcher matcher = cuipattern.matcher(event.getMessage());
+        if (matcher.find()) {
+            String type = matcher.group(1);
+            String args = matcher.group(2);
+            
+            if( type.equals("v") ) {
+                try {
+                    plugin.getSession(event.getPlayer()).setCUIVersion(Integer.parseInt(args));
+                    event.setCancelled(true);
+                } catch( NumberFormatException e ) {
+                }
+            }
+            
+        }
+    }
 }

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

@@ -32,7 +32,6 @@ import com.sk89q.worldedit.LocalPlayer;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.WorldEditException;
-import com.sk89q.worldedit.cui.CUIEvent;
 
 public class WorldEditCommands {
     private static final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss z");
@@ -79,13 +78,10 @@ public class WorldEditCommands {
         usage = "",
         desc = "Complete CUI handshake",
         min = 0,
-        max = 1
+        max = 0
     )
     public void cui(CommandContext args, LocalSession session, LocalPlayer player,
             EditSession editSession) throws WorldEditException {
-        if (args.getInteger(0, -1) < CUIEvent.MIN_PROTOCOL) {
-            player.printError("You are using an outdated version of WorldEdit CUI! The CUI may have reduced functionality until you update.");
-        }
         session.setCUISupport(true);
         session.dispatchCUISetup(player);
     }

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

@@ -21,9 +21,6 @@ package com.sk89q.worldedit.cui;
 
 public interface CUIEvent {
 
-    // The required protocol versions for communicating with the CUI
-    public static final int MIN_PROTOCOL = -1, CURRENT_PROTOCOL = 0; // TODO: Yetanotherx releases a new WECUI with protocol version 0.
-
     public String getTypeId();
 
     public String[] getParameters();

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

@@ -1,26 +0,0 @@
-// $Id$
-/*
- * 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.LocalPlayer;
-
-public interface CUIPointBasedRegion {
-    public void describeCUI(LocalPlayer player);
-}

src/main/java/com/sk89q/worldedit/cui/CUIRegion.java

@@ -0,0 +1,65 @@
+// $Id$
+/*
+ * 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.LocalPlayer;
+import com.sk89q.worldedit.LocalSession;
+
+public interface CUIRegion {
+    
+    /**
+     * Sends CUI events describing the region for
+     * versions of CUI equal to or greater than the
+     * value supplied by getProtocolVersion().
+     * 
+     */
+    public void describeCUI(LocalSession session, LocalPlayer player);
+    
+    /**
+     * Sends CUI events describing the region for
+     * versions of CUI smaller than the value 
+     * supplied by getProtocolVersion().
+     * 
+     */
+    public void describeLegacyCUI(LocalSession session, LocalPlayer player);
+    
+    /**
+     * Returns the CUI version that is required to send
+     * up-to-date data. If the CUI version is smaller than
+     * this value, the legacy methods will be called.
+     * 
+     * @return 
+     */
+    public int getProtocolVersion();
+    
+    /**
+     * Returns the type ID to send to CUI in the selection event. 
+     * @return 
+     */
+    public String getTypeID();
+    
+    /**
+     * Returns the type ID to send to CUI in the selection
+     * event if the CUI is in legacy mode.
+     * 
+     * @return 
+     */
+    public String getLegacyTypeID();
+}

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

@@ -27,7 +27,7 @@ import com.sk89q.worldedit.LocalPlayer;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.LocalWorld;
 import com.sk89q.worldedit.Vector;
-import com.sk89q.worldedit.cui.CUIPointBasedRegion;
+import com.sk89q.worldedit.cui.CUIRegion;
 import com.sk89q.worldedit.cui.SelectionPointEvent;
 
 /**
@@ -35,7 +35,7 @@ import com.sk89q.worldedit.cui.SelectionPointEvent;
  *
  * @author sk89q
  */
-public class CuboidRegionSelector implements RegionSelector, CUIPointBasedRegion {
+public class CuboidRegionSelector implements RegionSelector, CUIRegion {
     protected BlockVector pos1;
     protected BlockVector pos2;
     protected CuboidRegion region;
@@ -173,24 +173,6 @@ public class CuboidRegionSelector implements RegionSelector, CUIPointBasedRegion
         return lines;
     }
 
-    public String getTypeId() {
-        return "cuboid";
-    }
-
-    public String getLegacyTypeId() {
-        return null;
-    }
-
-    public void describeCUI(LocalPlayer player) {
-        if (pos1 != null) {
-            player.dispatchCUIEvent(new SelectionPointEvent(0, pos1, getArea()));
-        }
-
-        if (pos2 != null) {
-            player.dispatchCUIEvent(new SelectionPointEvent(1, pos2, getArea()));
-        }
-    }
-
     public int getArea() {
         if (pos1 == null) {
             return -1;
@@ -202,4 +184,32 @@ public class CuboidRegionSelector implements RegionSelector, CUIPointBasedRegion
 
         return region.getArea();
     }
+
+    public void describeCUI(LocalSession session, LocalPlayer player) {
+        if (pos1 != null) {
+            session.dispatchCUIEvent(player, new SelectionPointEvent(0, pos1, getArea()));
+        }
+
+        if (pos2 != null) {
+            session.dispatchCUIEvent(player, new SelectionPointEvent(1, pos2, getArea()));
+        }
+    }
+
+    public void describeLegacyCUI(LocalSession session, LocalPlayer player) {
+        describeCUI(session, player);
+    }
+
+    public int getProtocolVersion() {
+        return 0;
+    }
+
+    public String getTypeID() {
+        return "cuboid";
+    }
+
+    public String getLegacyTypeID() {
+        return "cuboid";
+    }
+
+    
 }

src/main/java/com/sk89q/worldedit/regions/EllipsoidRegionSelector.java

@@ -27,7 +27,7 @@ import com.sk89q.worldedit.LocalPlayer;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.LocalWorld;
 import com.sk89q.worldedit.Vector;
-import com.sk89q.worldedit.cui.CUIPointBasedRegion;
+import com.sk89q.worldedit.cui.CUIRegion;
 import com.sk89q.worldedit.cui.SelectionEllipsoidPointEvent;
 import com.sk89q.worldedit.cui.SelectionPointEvent;
 
@@ -36,7 +36,7 @@ import com.sk89q.worldedit.cui.SelectionPointEvent;
  *
  * @author TomyLobo
  */
-public class EllipsoidRegionSelector implements RegionSelector, CUIPointBasedRegion {
+public class EllipsoidRegionSelector implements RegionSelector, CUIRegion {
     protected EllipsoidRegion region;
 
     public EllipsoidRegionSelector(LocalWorld world) {
@@ -93,9 +93,7 @@ public class EllipsoidRegionSelector implements RegionSelector, CUIPointBasedReg
             player.print("Center position set to " + region.getCenter() + ".");
         }
 
-        session.dispatchCUIEvent(player, new SelectionEllipsoidPointEvent(0, region.getCenter()));
-        session.dispatchCUIEvent(player, new SelectionEllipsoidPointEvent(1, region.getRadius()));
-        legacyDescribeCUI(player, session);
+        session.describeCUI(player);
     }
 
     public void explainSecondarySelection(LocalPlayer player, LocalSession session, Vector pos) {
@@ -105,12 +103,11 @@ public class EllipsoidRegionSelector implements RegionSelector, CUIPointBasedReg
             player.print("Radius set to " + region.getRadius() + ".");
         }
 
-        session.dispatchCUIEvent(player, new SelectionEllipsoidPointEvent(1, region.getRadius()));
-        legacyDescribeCUI(player, session);
+        session.describeCUI(player);
     }
 
     public void explainRegionAdjust(LocalPlayer player, LocalSession session) {
-        legacyDescribeCUI(player, session);
+        session.describeCUI(player);
     }
 
     public boolean isDefined() {
@@ -157,35 +154,30 @@ public class EllipsoidRegionSelector implements RegionSelector, CUIPointBasedReg
         return lines;
     }
 
-    public String getTypeId() {
-        return "ellipsoid";
+    public int getArea() {
+        return region.getArea();
     }
 
-    public String getLegacyTypeId() {
+    public void describeCUI(LocalSession session, LocalPlayer player) {
+        session.dispatchCUIEvent(player, new SelectionEllipsoidPointEvent(0, region.getCenter()));
+        session.dispatchCUIEvent(player, new SelectionEllipsoidPointEvent(1, region.getRadius()));
+    }
+
+    public void describeLegacyCUI(LocalSession session, LocalPlayer player) {
+        session.dispatchCUIEvent(player, new SelectionPointEvent(0, region.getMinimumPoint(), getArea()));
+        session.dispatchCUIEvent(player, new SelectionPointEvent(1, region.getMaximumPoint(), getArea()));
+    }
+
+    public String getLegacyTypeID() {
         return "cuboid";
     }
 
-    public void describeCUI(LocalPlayer player) {
-        player.dispatchCUIEvent(new SelectionEllipsoidPointEvent(0, region.getCenter()));
-        player.dispatchCUIEvent(new SelectionEllipsoidPointEvent(1, region.getRadius()));
-        legacyDescribeCUI(player);
+    public int getProtocolVersion() {
+        return 1;
     }
 
-    protected void legacyDescribeCUI(LocalPlayer player, LocalSession session) {
-        if (!session.hasCUISupport()) {
-            return;
-        }
-
-        legacyDescribeCUI(player);
-    }
-
-    private void legacyDescribeCUI(LocalPlayer player) {
-        player.dispatchCUIEvent(new SelectionPointEvent(0, region.getMinimumPoint(), getArea()));
-        player.dispatchCUIEvent(new SelectionPointEvent(1, region.getMaximumPoint(), getArea()));
-    }
-
-    public int getArea() {
-        return region.getArea();
+    public String getTypeID() {
+        return "ellipsoid";
     }
 
     @Override

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

@@ -29,7 +29,7 @@ import com.sk89q.worldedit.LocalPlayer;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.LocalWorld;
 import com.sk89q.worldedit.Vector;
-import com.sk89q.worldedit.cui.CUIPointBasedRegion;
+import com.sk89q.worldedit.cui.CUIRegion;
 import com.sk89q.worldedit.cui.SelectionMinMaxEvent;
 import com.sk89q.worldedit.cui.SelectionPoint2DEvent;
 import com.sk89q.worldedit.cui.SelectionShapeEvent;
@@ -39,7 +39,7 @@ import com.sk89q.worldedit.cui.SelectionShapeEvent;
  *
  * @author sk89q
  */
-public class Polygonal2DRegionSelector implements RegionSelector, CUIPointBasedRegion {
+public class Polygonal2DRegionSelector implements RegionSelector, CUIRegion {
     protected BlockVector pos1;
     protected Polygonal2DRegion region;
 
@@ -116,7 +116,7 @@ public class Polygonal2DRegionSelector implements RegionSelector, CUIPointBasedR
     public void explainPrimarySelection(LocalPlayer player, LocalSession session, Vector pos) {
         player.print("Starting a new polygon at " + pos + ".");
 
-        session.dispatchCUIEvent(player, new SelectionShapeEvent(getTypeId()));
+        session.dispatchCUIEvent(player, new SelectionShapeEvent(getTypeID()));
         session.dispatchCUIEvent(player, new SelectionPoint2DEvent(0, pos, getArea()));
         session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.minY, region.maxY));
     }
@@ -174,14 +174,6 @@ public class Polygonal2DRegionSelector implements RegionSelector, CUIPointBasedR
         return Collections.singletonList("# points: " + region.size());
     }
 
-    public String getTypeId() {
-        return "polygon2d";
-    }
-
-    public String getLegacyTypeId() {
-        return null;
-    }
-
     public int getArea() {
         return region.getArea();
     }
@@ -190,12 +182,30 @@ public class Polygonal2DRegionSelector implements RegionSelector, CUIPointBasedR
         return region.getPoints().size();
     }
 
-    public void describeCUI(LocalPlayer player) {
+    public void describeCUI(LocalSession session, LocalPlayer player) {
         final List<BlockVector2D> points = region.getPoints();
         for (int id = 0; id < points.size(); id++) {
-            player.dispatchCUIEvent(new SelectionPoint2DEvent(id, points.get(id), getArea()));
+            session.dispatchCUIEvent(player, new SelectionPoint2DEvent(id, points.get(id), getArea()));
         }
 
-        player.dispatchCUIEvent(new SelectionMinMaxEvent(region.minY, region.maxY));
+        session.dispatchCUIEvent(player, new SelectionMinMaxEvent(region.minY, region.maxY));
     }
+
+    public void describeLegacyCUI(LocalSession session, LocalPlayer player) {
+        describeCUI(session, player);
+    }
+
+    public int getProtocolVersion() {
+        return 0;
+    }
+
+    public String getTypeID() {
+        return "polygon2d";
+    }
+
+    public String getLegacyTypeID() {
+        return "polygon2d";
+    }
+
+    
 }

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

@@ -131,20 +131,6 @@ public interface RegionSelector {
      */
     public String getTypeName();
 
-    /**
-     * Get a lowercase space-less ID.
-     * 
-     * @return
-     */
-    public String getTypeId();
-
-    /**
-     * Gets an alternative ID, for which this region selector also sends data.
-     * 
-     * @return
-     */
-    public String getLegacyTypeId();
-
     /**
      * Get lines of information about the selection.
      * 

src/main/java/com/sk89q/worldedit/regions/SphereRegionSelector.java

@@ -23,7 +23,6 @@ import com.sk89q.worldedit.LocalPlayer;
 import com.sk89q.worldedit.LocalSession;
 import com.sk89q.worldedit.LocalWorld;
 import com.sk89q.worldedit.Vector;
-import com.sk89q.worldedit.cui.SelectionEllipsoidPointEvent;
 
 /**
  * Selector for spheres.
@@ -65,8 +64,7 @@ public class SphereRegionSelector extends EllipsoidRegionSelector {
             player.print("Radius set to " + region.getRadius().getX() + ".");
         }
 
-        session.dispatchCUIEvent(player, new SelectionEllipsoidPointEvent(1, region.getRadius()));
-        legacyDescribeCUI(player, session);
+        session.describeCUI(player);
     }
 
     @Override