[Bleeding] Added support for amending help topic visibility permissions in help.yml. Addresses BUKKIT-1113

src/main/java/org/bukkit/craftbukkit/help/CommandAliasHelpTopic.java

@@ -1,7 +1,6 @@
 package org.bukkit.craftbukkit.help;
 
 import org.bukkit.ChatColor;
-import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.bukkit.help.HelpMap;
 import org.bukkit.help.HelpTopic;
@@ -9,13 +8,11 @@ import org.bukkit.help.HelpTopic;
 public class CommandAliasHelpTopic extends HelpTopic {
 
     private String aliasFor;
-    private Command command;
     private HelpMap helpMap;
 
-    public CommandAliasHelpTopic(String alias, String aliasFor, Command command, HelpMap helpMap) {
+    public CommandAliasHelpTopic(String alias, String aliasFor, HelpMap helpMap) {
         this.aliasFor = aliasFor.startsWith("/") ? aliasFor : "/" + aliasFor;
         this.helpMap = helpMap;
-        this.command = command;
         this.name = alias.startsWith("/") ? alias : "/" + alias;
         this.shortText = ChatColor.YELLOW + "Alias for " + ChatColor.WHITE + this.aliasFor;
     }
@@ -33,11 +30,15 @@ public class CommandAliasHelpTopic extends HelpTopic {
 
     @Override
     public boolean canSee(CommandSender commandSender) {
+        if (amendedPermission == null) {
             HelpTopic aliasForTopic = helpMap.getHelpTopic(aliasFor);
             if (aliasForTopic != null) {
                 return aliasForTopic.canSee(commandSender);
             } else {
                 return false;
             }
+        } else {
+            return commandSender.hasPermission(amendedPermission);
+        }
     }
 }

src/main/java/org/bukkit/craftbukkit/help/HelpTopicAmendment.java

@@ -7,11 +7,13 @@ public class HelpTopicAmendment {
     private String topicName;
     private String shortText;
     private String fullText;
+    private String permission;
 
-    public HelpTopicAmendment(String topicName, String shortText, String fullText) {
+    public HelpTopicAmendment(String topicName, String shortText, String fullText, String permission) {
         this.fullText = fullText;
         this.shortText = shortText;
         this.topicName = topicName;
+        this.permission = permission;
     }
 
     /**
@@ -37,4 +39,12 @@ public class HelpTopicAmendment {
     public String getTopicName() {
         return topicName;
     }
+
+    /**
+     * Gets the amended permission
+     * @return the permission
+     */
+    public String getPermission() {
+        return permission;
+    }
 }

src/main/java/org/bukkit/craftbukkit/help/HelpYamlReader.java

@@ -64,7 +64,8 @@ public class HelpYamlReader {
                 ConfigurationSection section = commandTopics.getConfigurationSection(topicName);
                 String description = section.getString("shortText");
                 String usage = section.getString("fullText");
-                amendments.add(new HelpTopicAmendment(topicName, description, usage));
+                String permission = section.getString("permission");
+                amendments.add(new HelpTopicAmendment(topicName, description, usage, permission));
             }
         }
         return amendments;

src/main/java/org/bukkit/craftbukkit/help/MultipleCommandAliasHelpTopic.java

@@ -35,6 +35,7 @@ public class MultipleCommandAliasHelpTopic extends HelpTopic {
     }
 
     public boolean canSee(CommandSender sender) {
+        if (amendedPermission == null) {
             if (sender instanceof ConsoleCommandSender) {
                 return true;
             }
@@ -46,5 +47,8 @@ public class MultipleCommandAliasHelpTopic extends HelpTopic {
             }
 
             return true;
+        } else {
+            return sender.hasPermission(amendedPermission);
+        }
     }
 }

src/main/java/org/bukkit/craftbukkit/help/SimpleHelpMap.java

@@ -69,6 +69,7 @@ public class SimpleHelpMap implements HelpMap {
      * Processes all the commands registered in the server and creates help topics for them.
      * @param server A reference to the server.
      */
+    @SuppressWarnings("unchecked")
     public synchronized void initializeCommands(CraftServer server) {
         // ** Load topics from highest to lowest priority order **
 
@@ -90,7 +91,7 @@ public class SimpleHelpMap implements HelpMap {
         // Initialize command alias help topics
         for (Command command : server.getCommandMap().getCommands()) {
             for (String alias : command.getAliases()) {
-                addTopic(new CommandAliasHelpTopic(alias, command.getLabel(), command, this));
+                addTopic(new CommandAliasHelpTopic(alias, command.getLabel(), this));
             }
         }
 
@@ -99,16 +100,19 @@ public class SimpleHelpMap implements HelpMap {
             addTopic(new GenericCommandHelpTopic(command));
         }
 
+        // Add alias sub-index
+        addTopic(new IndexHelpTopic("Aliases", "Lists command aliases", null, Collections2.filter(helpTopics.values(), Predicates.instanceOf(CommandAliasHelpTopic.class))));
+
         // Amend help topics from the help.yml file
         HelpYamlReader reader = new HelpYamlReader(server);
         for (HelpTopicAmendment amendment : reader.getTopicAmendments()) {
             if (helpTopics.containsKey(amendment.getTopicName())) {
                 helpTopics.get(amendment.getTopicName()).amendTopic(amendment.getShortText(), amendment.getFullText());
+                if (amendment.getPermission() != null) {
+                    helpTopics.get(amendment.getTopicName()).amendCanSee(amendment.getPermission());
+                }
             }
         }
-
-        // Add alias sub-index
-        addTopic(new IndexHelpTopic("Aliases", "Lists command aliases", null, Collections2.filter(helpTopics.values(), Predicates.instanceOf(CommandAliasHelpTopic.class))));
     }
 
     public void registerHelpTopicFactory(Class commandClass, HelpTopicFactory factory) {

src/main/resources/configurations/help.yml

@@ -20,3 +20,4 @@
 #     /stop:
 #         shortText: Stops the server cold....in its tracks!
 #         fullText: <text> - This kills the server.
+#         permission: you.dont.have