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package org.bukkit.plugin;
import java.io.File;
import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.EnumMap;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.Matcher;
import org.bukkit.Server;
import java.util.regex.Pattern;
import org.bukkit.event.Event;
import org.bukkit.event.Event.Priority;
import org.bukkit.event.Listener;
/**
* Handles all plugin management from the Server
*/
public final class SimplePluginManager implements PluginManager {
private final Server server;
private final Map<Pattern, PluginLoader> fileAssociations = new HashMap<Pattern, PluginLoader>();
private final List<Plugin> plugins = new ArrayList<Plugin>();
private final Map<String, Plugin> lookupNames = new HashMap<String, Plugin>();
private final Map<Event.Type, List<RegisteredListener>> listeners = new EnumMap<Event.Type, List<RegisteredListener>>(Event.Type.class);
public SimplePluginManager(Server instance) {
server = instance;
}
/**
* Registers the specified plugin loader
*
* @param loader Class name of the PluginLoader to register
* @throws IllegalArgumentException Thrown when the given Class is not a valid PluginLoader
*/
public void RegisterInterface(Class loader) throws IllegalArgumentException {
PluginLoader instance;
if (PluginLoader.class.isAssignableFrom(loader)) {
Constructor constructor;
try {
constructor = loader.getConstructor(Server.class);
instance = (PluginLoader) constructor.newInstance(server);
} catch (NoSuchMethodException ex) {
throw new IllegalArgumentException(String.format("Class %s does not have a public %s(Server) constructor", loader.getName()), ex);
} catch (Exception ex) {
throw new IllegalArgumentException(String.format("Unexpected exception %s while attempting to construct a new instance of %s", ex.getClass().getName(), loader.getName()), ex);
}
} else {
throw new IllegalArgumentException(String.format("Class %s does not implement interface PluginLoader", loader.getName()));
}
Pattern[] patterns = instance.getPluginFileFilters();
for (Pattern pattern : patterns) {
fileAssociations.put(pattern, instance);
}
}
/**
* Loads the plugins contained within the specified directory
*
* @param directory Directory to check for plugins
* @return A list of all plugins loaded
*/
public Plugin[] loadPlugins(File directory) {
List<Plugin> result = new ArrayList<Plugin>();
File[] files = directory.listFiles();
for (File file : files) {
Plugin plugin = null;
try {
plugin = loadPlugin(file);
} catch (InvalidPluginException ex) {
Logger.getLogger(SimplePluginManager.class.getName()).log(Level.SEVERE, "Could not load " + file.getPath() + " in " + directory.getPath(), ex);
}
if (plugin != null) {
result.add(plugin);
}
}
return result.toArray(new Plugin[result.size()]);
}
/**
* Loads the plugin in the specified file
*
* File must be valid according to the current enabled Plugin interfaces
*
* @param file File containing the plugin to load
* @return The Plugin loaded, or null if it was invalid
* @throws InvalidPluginException Thrown when the specified file is not a valid plugin
*/
public Plugin loadPlugin(File file) throws InvalidPluginException {
Set<Pattern> filters = fileAssociations.keySet();
Plugin result = null;
for (Pattern filter : filters) {
String name = file.getName();
Matcher match = filter.matcher(name);
if (match.find()) {
PluginLoader loader = fileAssociations.get(filter);
result = loader.loadPlugin(file);
}
}
if (result != null) {
plugins.add(result);
lookupNames.put(result.getDescription().getName(), result);
}
return result;
}
/**
* Checks if the given plugin is loaded and returns it when applicable
*
* Please note that the name of the plugin is case-sensitive
*
* @param name Name of the plugin to check
* @return Plugin if it exists, otherwise null
*/
public Plugin getPlugin(String name) {
return lookupNames.get(name);
}
/**
* Checks if the given plugin is enabled or not
*
* Please note that the name of the plugin is case-sensitive.
*
* @param name Name of the plugin to check
* @return true if the plugin is enabled, otherwise false
*/
public boolean isPluginEnabled(String name) {
Plugin plugin = getPlugin(name);
return isPluginEnabled(plugin);
}
/**
* Checks if the given plugin is enabled or not
*
* @param plugin Plugin to check
* @return true if the plugin is enabled, otherwise false
*/
public boolean isPluginEnabled(Plugin plugin) {
if ((plugin != null) && (plugins.contains(plugin))) {
return plugin.isEnabled();
} else {
return false;
}
}
/**
* Calls a player related event with the given details
*
* @param type Type of player related event to call
* @param event Event details
*/
public void callEvent(Event event) {
List<RegisteredListener> eventListeners = listeners.get(event.getType());
if (eventListeners != null) {
for (RegisteredListener registration : eventListeners) {
Plugin plugin = registration.getPlugin();
PluginLoader loader = plugin.getPluginLoader();
if (plugin.isEnabled()) {
try {
loader.callEvent(registration, event);
} catch (Throwable ex) {
Logger.getLogger(SimplePluginManager.class.getName()).log(Level.SEVERE, "Could not pass event " + event.getType() + " to " + plugin.getDescription().getName(), ex);
}
}
}
}
}
/**
* Registers the given event to the specified listener
*
* @param type EventType to register
* @param listener PlayerListener to register
* @param priority Priority of this event
* @param plugin Plugin to register
*/
public void registerEvent(Event.Type type, Listener listener, Priority priority, Plugin plugin) {
List<RegisteredListener> eventListeners = listeners.get(type);
int position = 0;
if (eventListeners != null) {
for (RegisteredListener registration : eventListeners) {
if (registration.getPriority().compareTo(priority) < 0) {
break;
}
position++;
}
} else {
eventListeners = new ArrayList<RegisteredListener>();
listeners.put(type, eventListeners);
}
eventListeners.add(position, new RegisteredListener(listener, priority, plugin));
}
}
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