Added PermissionsProvider interface that can also handle permissions.

src/com/sk89q/bukkit/migration/PermissionsProvider.java

@@ -0,0 +1,26 @@
+// $Id$
+/*
+ * 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.bukkit.migration;
+
+public interface PermissionsProvider {
+    public boolean hasPermission(String name, String permission);
+    public boolean inGroup(String player, String group);
+    public String[] getGroups(String player);
+}

src/com/sk89q/bukkit/migration/PermissionsResolverManager.java

@@ -21,6 +21,7 @@ package com.sk89q.bukkit.migration;
 
 import java.util.logging.Logger;
 import org.bukkit.Server;
+import org.bukkit.plugin.Plugin;
 import org.bukkit.util.config.Configuration;
 
 public class PermissionsResolverManager implements PermissionsResolver {
@@ -40,6 +41,7 @@ public class PermissionsResolverManager implements PermissionsResolver {
     }
     
     public void findResolver() {
+        if (tryPluginPermissionsResolver()) return;
         if (tryGroupsUsers()) return;
         if (tryNijiPermissions()) return;
         if (tryFlatFilePermissions()) return;
@@ -77,6 +79,31 @@ public class PermissionsResolverManager implements PermissionsResolver {
         
         return false;
     }
+    
+    private boolean tryPluginPermissionsResolver() {
+        for (Plugin plugin : server.getPluginManager().getPlugins()) {
+            if (plugin instanceof PermissionsProvider) {
+                perms = new PluginPermissionsResolver(
+                        (PermissionsProvider) plugin);
+                logger.info(name + ": Using plugin '"
+                        + plugin.getDescription().getName() + " for permissions.");
+                return true;
+            }
+        }
+        
+        return false;
+    }
+    
+    public void setPluginPermissionsResolver(Plugin plugin) {
+        if (!(plugin instanceof PermissionsProvider)) {
+            return;
+        }
+        
+        perms = new PluginPermissionsResolver(
+                (PermissionsProvider) plugin);
+        logger.info(name + ": Using plugin '"
+                + plugin.getDescription().getName() + " for permissions.");
+    }
 
     public void load() {
         perms.load();

src/com/sk89q/bukkit/migration/PermissionsResolverServerListener.java

@@ -39,9 +39,12 @@ public class PermissionsResolverServerListener extends ServerListener {
      */
     @Override
     public void onPluginEnabled(PluginEvent event) {
-        String name = event.getPlugin().getDescription().getName();
+        Plugin plugin = event.getPlugin();
+        String name = plugin.getDescription().getName();
         
-        if (name.equalsIgnoreCase("GroupUsers") || name.equalsIgnoreCase("Permissions")) {
+        if (plugin instanceof PermissionsProvider) {
+            manager.setPluginPermissionsResolver(plugin);
+        } else if (name.equalsIgnoreCase("GroupUsers") || name.equalsIgnoreCase("Permissions")) {
             manager.findResolver();
         }
     }
@@ -53,9 +56,12 @@ public class PermissionsResolverServerListener extends ServerListener {
      */
     @Override
     public void onPluginDisabled(PluginEvent event) {
-        String name = event.getPlugin().getDescription().getName();
+        Plugin plugin = event.getPlugin();
+        String name = plugin.getDescription().getName();
         
-        if (name.equalsIgnoreCase("GroupUsers") || name.equalsIgnoreCase("Permissions")) {
+        if (plugin instanceof PermissionsProvider
+                || name.equalsIgnoreCase("GroupUsers")
+                || name.equalsIgnoreCase("Permissions")) {
             manager.findResolver();
         }
     }

src/com/sk89q/bukkit/migration/PluginPermissionsResolver.java

@@ -0,0 +1,49 @@
+// $Id$
+/*
+ * 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.bukkit.migration;
+
+public class PluginPermissionsResolver implements PermissionsResolver {
+    
+    protected PermissionsProvider resolver;
+    
+    public PluginPermissionsResolver(PermissionsProvider resolver) {
+        this.resolver = resolver;
+    }
+
+    @Override
+    public void load() {
+    }
+
+    @Override
+    public boolean hasPermission(String name, String permission) {
+        return resolver.hasPermission(name, permission);
+    }
+
+    @Override
+    public boolean inGroup(String player, String group) {
+        return resolver.inGroup(player, group);
+    }
+
+    @Override
+    public String[] getGroups(String player) {
+        return resolver.getGroups(player);
+    }
+
+}