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package org.bukkit.help;
/**
* The HelpMap tracks all help topics registered in a Bukkit server. When the server starts up or is reloaded,
* help is processed and topics are added in the following order:
*
* 1. General topics are loaded from the help.yml
* 2. Plugins load and optionally call {@code addTopic()}
* 3. Registered plugin commands are processed by {@link HelpTopicFactory} objects to create topics
* 4. Topic contents are amended as directed in help.yml
*/
public interface HelpMap {
/**
* Returns a help topic for a given topic name.
*
* @param topicName The help topic name to look up.
* @return A {@link HelpTopic} object matching the topic name or null if none can be found.
*/
public HelpTopic getHelpTopic(String topicName);
/**
* Adds a topic to the server's help index.
*
* @param topic The new help topic to add.
*/
public void addTopic(HelpTopic topic);
/**
* Clears out the contents of the help index. Normally called during server reload.
*/
public void clear();
/**
* Associates a {@link HelpTopicFactory} object with given command base class. Plugins typically
* call this method during {@code onLoad()}. Once registered, the custom HelpTopicFactory will
* be used to create a custom {@link HelpTopic} for all commands deriving from the {@code commandClass}
* base class, or all commands deriving from {@link org.bukkit.command.PluginCommand} who's executor
* derives from {@code commandClass} base class.
*
* @param commandClass The class for which the custom HelpTopicFactory applies. Must derive from
* either {@link org.bukkit.command.Command} or {@link org.bukkit.command.CommandExecutor}.
* @param factory The {@link HelpTopicFactory} implementation to associate with the {@code commandClass}.
* @throws IllegalArgumentException Thrown if {@code commandClass} does not derive from a legal base class.
*/
public void registerHelpTopicFactory(Class commandClass, HelpTopicFactory factory);
}
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