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A spigot fork to kotlin structure and news.
package org.bukkit.plugin;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import org.bukkit.Bukkit;
import org.bukkit.event.server.ServiceRegisterEvent;
import org.bukkit.event.server.ServiceUnregisterEvent;
import java.util.*;
/**
* A simple services manager.
*/
public class SimpleServicesManager implements ServicesManager {
/**
* Map of providers.
*/
private final Map, List>> providers = new HashMap, List>>();
/**
* Register a provider of a service.
*
* @param Provider
* @param service service class
* @param provider provider to register
* @param plugin plugin with the provider
* @param priority priority of the provider
*/
public void register(Class service, T provider, Plugin plugin, ServicePriority priority) {
RegisteredServiceProvider registeredProvider = null;
synchronized (providers) {
List> registered = providers.get(service);
if (registered == null) {
registered = new ArrayList>();
providers.put(service, registered);
}
registeredProvider = new RegisteredServiceProvider(service, provider, priority, plugin);
// Insert the provider into the collection, much more efficient big O than sort
int position = Collections.binarySearch(registered, registeredProvider);
if (position < 0) {
registered.add(-(position + 1), registeredProvider);
} else {
registered.add(position, registeredProvider);
}
}
Bukkit.getServer().getPluginManager().callEvent(new ServiceRegisterEvent(registeredProvider));
}
/**
* Unregister all the providers registered by a particular plugin.
*
* @param plugin The plugin
*/
public void unregisterAll(Plugin plugin) {
ArrayList unregisteredEvents = new ArrayList();
synchronized (providers) {
Iterator, List>>> it = providers.entrySet().iterator();
try {
while (it.hasNext()) {
Map.Entry, List>> entry = it.next();
Iterator> it2 = entry.getValue().iterator();
try {
// Removed entries that are from this plugin
while (it2.hasNext()) {
RegisteredServiceProvider registered = it2.next();
if (registered.getPlugin().equals(plugin)) {
it2.remove();
unregisteredEvents.add(new ServiceUnregisterEvent(registered));
}
}
} catch (NoSuchElementException e) { // Why does Java suck
}
// Get rid of the empty list
if (entry.getValue().size() == 0) {
it.remove();
}
}
} catch (NoSuchElementException e) {
}
}
for (ServiceUnregisterEvent event : unregisteredEvents) {
Bukkit.getServer().getPluginManager().callEvent(event);
}
}
/**
* Unregister a particular provider for a particular service.
*
* @param service The service interface
* @param provider The service provider implementation
*/
public void unregister(Class service, Object provider) {
ArrayList unregisteredEvents = new ArrayList();
synchronized (providers) {
Iterator, List>>> it = providers.entrySet().iterator();
try {
while (it.hasNext()) {
Map.Entry, List>> entry = it.next();
// We want a particular service
if (entry.getKey() != service) {
continue;
}
Iterator> it2 = entry.getValue().iterator();
try {
// Removed entries that are from this plugin
while (it2.hasNext()) {
RegisteredServiceProvider registered = it2.next();
if (registered.getProvider() == provider) {
it2.remove();
unregisteredEvents.add(new ServiceUnregisterEvent(registered));
}
}
} catch (NoSuchElementException e) { // Why does Java suck
}
// Get rid of the empty list
if (entry.getValue().size() == 0) {
it.remove();
}
}
} catch (NoSuchElementException e) {
}
}
for (ServiceUnregisterEvent event : unregisteredEvents) {
Bukkit.getServer().getPluginManager().callEvent(event);
}
}
/**
* Unregister a particular provider.
*
* @param provider The service provider implementation
*/
public void unregister(Object provider) {
ArrayList unregisteredEvents = new ArrayList();
synchronized (providers) {
Iterator, List>>> it = providers.entrySet().iterator();
try {
while (it.hasNext()) {
Map.Entry, List>> entry = it.next();
Iterator> it2 = entry.getValue().iterator();
try {
// Removed entries that are from this plugin
while (it2.hasNext()) {
RegisteredServiceProvider registered = it2.next();
if (registered.getProvider().equals(provider)) {
it2.remove();
unregisteredEvents.add(new ServiceUnregisterEvent(registered));
}
}
} catch (NoSuchElementException e) { // Why does Java suck
}
// Get rid of the empty list
if (entry.getValue().size() == 0) {
it.remove();
}
}
} catch (NoSuchElementException e) {
}
}
for (ServiceUnregisterEvent event : unregisteredEvents) {
Bukkit.getServer().getPluginManager().callEvent(event);
}
}
/**
* Queries for a provider. This may return if no provider has been
* registered for a service. The highest priority provider is returned.
*
* @param The service interface
* @param service The service interface
* @return provider or null
*/
public T load(Class service) {
synchronized (providers) {
List> registered = providers.get(service);
if (registered == null) {
return null;
}
// This should not be null!
return service.cast(registered.get(0).getProvider());
}
}
/**
* Queries for a provider registration. This may return if no provider
* has been registered for a service.
*
* @param The service interface
* @param service The service interface
* @return provider registration or null
*/
@SuppressWarnings("unchecked")
public RegisteredServiceProvider getRegistration(Class service) {
synchronized (providers) {
List> registered = providers.get(service);
if (registered == null) {
return null;
}
// This should not be null!
return (RegisteredServiceProvider) registered.get(0);
}
}
/**
* Get registrations of providers for a plugin.
*
* @param plugin The plugin
* @return provider registration or null
*/
public List> getRegistrations(Plugin plugin) {
ImmutableList.Builder> ret = ImmutableList.builder();
synchronized (providers) {
for (List> registered : providers.values()) {
for (RegisteredServiceProvider provider : registered) {
if (provider.getPlugin().equals(plugin)) {
ret.add(provider);
}
}
}
}
return ret.build();
}
/**
* Get registrations of providers for a service. The returned list is
* an unmodifiable copy.
*
* @param The service interface
* @param service The service interface
* @return a copy of the list of registrations
*/
@SuppressWarnings("unchecked")
public List> getRegistrations(Class service) {
ImmutableList.Builder> ret;
synchronized (providers) {
List> registered = providers.get(service);
if (registered == null) {
return ImmutableList.of();
}
ret = ImmutableList.builder();
for (RegisteredServiceProvider provider : registered) {
ret.add((RegisteredServiceProvider) provider);
}
}
return ret.build();
}
/**
* Get a list of known services. A service is known if it has registered
* providers for it.
*
* @return a copy of the set of known services
*/
public Set> getKnownServices() {
synchronized (providers) {
return ImmutableSet.copyOf(providers.keySet());
}
}
/**
* Returns whether a provider has been registered for a service.
*
* @param service
* @param service service to check
* @return true if and only if there are registered providers
*/
public boolean isProvidedFor(Class service) {
synchronized (providers) {
return providers.containsKey(service);
}
}
}
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