From eb909f3340f18cee0c50bf6be68fbe037da77fca Mon Sep 17 00:00:00 2001
From: sk89q <the.sk89q@gmail.com>
Date: Fri, 5 Nov 2010 17:56:05 -0700
Subject: [PATCH] Added missing class.

---
 src/WorldEditBridge.java | 130 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 src/WorldEditBridge.java

diff --git a/src/WorldEditBridge.java b/src/WorldEditBridge.java
new file mode 100644
index 000000000..47033f5d7
--- /dev/null
+++ b/src/WorldEditBridge.java
@@ -0,0 +1,130 @@
+// $Id$
+/*
+ * 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/>.
+*/
+
+import java.lang.reflect.*;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.WorldEditNotInstalled;
+import com.sk89q.worldedit.IncompleteRegionException;
+
+/**
+ * Class to access WorldEdit from another plugin.
+ *
+ * @author sk89q
+ */
+public class WorldEditBridge {
+    /**
+     * Invokes an object's method through reflection.
+     * 
+     * @param obj
+     * @param name
+     * @param args
+     * @param types
+     * @return
+     * @throws InvocationTargetException
+     * @throws IllegalAccessException
+     * @throws NoSuchMethodException
+     */
+    private static Object invokeMethod(Object obj, String name, Object[] args,
+            Class ... types) throws InvocationTargetException, IllegalAccessException,
+            NoSuchMethodException {
+        Method method = obj.getClass().getDeclaredMethod(name, types);
+        return method.invoke(obj, args);
+    }
+
+    /**
+     * Invokes a method through reflection.
+     *
+     * @param obj
+     * @param name
+     * @return
+     * @throws InvocationTargetException
+     * @throws IllegalAccessException
+     * @throws NoSuchMethodException
+     */
+    private static Object invokeMethod(Object obj, String name)
+            throws InvocationTargetException, IllegalAccessException, NoSuchMethodException {
+        Method method = obj.getClass().getDeclaredMethod(name, new Class[]{});
+        return method.invoke(obj, new Object[]{});
+    }
+
+    /**
+     * Get a point from the currently selected region.
+     * 
+     * @param player
+     * @param methodName
+     * @return
+     * @throws WorldEditNotInstalled
+     * @throws IncompleteRegionException
+     */
+    private static Vector getRegionPoint(Player player, String methodName)
+            throws WorldEditNotInstalled, IncompleteRegionException {
+        Plugin plugin = etc.getLoader().getPlugin("WorldEdit");
+        if (plugin == null) {
+            throw new WorldEditNotInstalled();
+        }
+        try {
+            Object listener = invokeMethod(plugin, "getListener");
+            Object session = invokeMethod(listener, "_bridgeSession",
+                    new Object[]{ player }, Player.class);
+            Object region = invokeMethod(session, "getRegion");
+            Object minPoint = invokeMethod(region, methodName);
+            int x = (Integer)invokeMethod(minPoint, "getBlockX");
+            int y = (Integer)invokeMethod(minPoint, "getBlockY");
+            int z = (Integer)invokeMethod(minPoint, "getBlockZ");
+            return new Vector(x, y, z);
+        } catch (InvocationTargetException e) {
+            String exceptionName = e.getTargetException().getClass().getCanonicalName();
+            if (exceptionName.equals("com.sk89q.worldedit.IncompleteRegionException")) {
+                throw new IncompleteRegionException();
+            }
+            throw new WorldEditNotInstalled();
+        } catch (IllegalAccessException e) {
+            throw new WorldEditNotInstalled();
+        } catch (NoSuchMethodException e) {
+            throw new WorldEditNotInstalled();
+        }
+    }
+
+    /**
+     * Get the selection minimum point.
+     *
+     * @param player
+     * @return
+     * @throws WorldEditNotInstalled
+     * @throws IncompleteRegionException
+     */
+    public static Vector getRegionMinimumPoint(Player player)
+            throws WorldEditNotInstalled, IncompleteRegionException {
+        return getRegionPoint(player, "getMinimumPoint");
+    }
+
+    /**
+     * Get the selection maximum point.
+     *
+     * @param player
+     * @return
+     * @throws WorldEditNotInstalled
+     * @throws IncompleteRegionException
+     */
+    public static Vector getRegionMaximumPoint(Player player)
+            throws WorldEditNotInstalled, IncompleteRegionException {
+        return getRegionPoint(player, "getMaximumPoint");
+    }
+}
+