Added helper WGBukkit class to get references to WorldGuard in other Bukkit plugins.

src/main/java/com/sk89q/worldguard/protection/flags/WGBukkit.java

@@ -0,0 +1,65 @@
+// $Id$
+/*
+ * This file is a part of WorldGuard.
+ * Copyright (c) sk89q <http://www.sk89q.com>
+ * Copyright (c) the WorldGuard team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free Software
+ * (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
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldguard.protection.flags;
+
+import org.bukkit.Bukkit;
+import org.bukkit.World;
+
+import com.sk89q.worldguard.bukkit.WorldGuardPlugin;
+import com.sk89q.worldguard.protection.managers.RegionManager;
+
+/**
+ * Helper class to get a reference to WorldGuard and its components.
+ */
+public class WGBukkit {
+
+    private WGBukkit() {
+    }
+
+    /**
+     * Get the WorldGuard plugin. If WorldGuard isn't loaded yet, then this will
+     * return null.
+     * <p>
+     * If you are depending on WorldGuard in your plugin, you should place
+     * <code>softdepend: [WorldGuard]</code> or <code>depend: [WorldGuard]</code>
+     * in your plugin.yml so that this won't return null for you.
+     *
+     * @return the WorldGuard plugin or null
+     */
+    public WorldGuardPlugin getPlugin() {
+        return (WorldGuardPlugin) Bukkit.getServer().getPluginManager().getPlugin("WorldGuard");
+    }
+
+    /**
+     * Returns the region manager for a given world. May return null if WorldGuard
+     * is not loaded or region protection is not enabled for the given world.
+     *
+     * @param world world
+     * @return a region manager or null
+     */
+    public RegionManager getRegionManager(World world) {
+        WorldGuardPlugin plugin = getPlugin();
+        if (plugin == null) {
+            return null;
+        }
+
+        return plugin.getRegionManager(world);
+    }
+
+}