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/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();
+}