| /* |
| * Copyright (c) 2007-2009, 2011-2013, 2015 Eike Stepper (Berlin, Germany) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Eike Stepper - initial API and implementation |
| * Christian W. Damus (CEA) - bug 399641: container-aware factories |
| */ |
| package org.eclipse.net4j.internal.util.factory; |
| |
| import org.eclipse.net4j.internal.util.bundle.OM; |
| import org.eclipse.net4j.util.container.IManagedContainer; |
| import org.eclipse.net4j.util.factory.FactoryDescriptor; |
| import org.eclipse.net4j.util.factory.IFactory; |
| import org.eclipse.net4j.util.factory.IFactoryKey; |
| import org.eclipse.net4j.util.registry.HashMapRegistry; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public class PluginFactoryRegistry extends HashMapRegistry<IFactoryKey, IFactory> |
| { |
| public static final String NAMESPACE = OM.BUNDLE_ID; |
| |
| public static final String EXT_POINT = "factories"; //$NON-NLS-1$ |
| |
| private final IManagedContainer container; |
| |
| private Object extensionRegistryListener; |
| |
| public PluginFactoryRegistry(IManagedContainer container) |
| { |
| this.container = container; |
| } |
| |
| @Override |
| public IFactory get(Object key) |
| { |
| IFactory factory = super.get(key); |
| if (factory instanceof FactoryDescriptor) |
| { |
| FactoryDescriptor descriptor = (FactoryDescriptor)factory; |
| factory = descriptor.createFactory(); |
| if (factory != null && factory != descriptor) |
| { |
| put(factory.getKey(), factory); |
| } |
| } |
| |
| return factory; |
| } |
| |
| public void registerFactory(FactoryDescriptor factory) |
| { |
| put(factory.getKey(), factory); |
| } |
| |
| @Override |
| protected void doActivate() throws Exception |
| { |
| super.doActivate(); |
| |
| try |
| { |
| doActivateOSGi(); |
| } |
| catch (Throwable t) |
| { |
| OM.LOG.warn(t); |
| } |
| } |
| |
| @Override |
| protected void doDeactivate() throws Exception |
| { |
| try |
| { |
| doDeactivateOSGi(); |
| } |
| catch (Throwable t) |
| { |
| OM.LOG.warn(t); |
| } |
| |
| clear(); |
| super.doDeactivate(); |
| } |
| |
| protected final IManagedContainer getManagedContainer() |
| { |
| return container; |
| } |
| |
| private void doActivateOSGi() |
| { |
| org.eclipse.core.runtime.IExtensionRegistry extensionRegistry = org.eclipse.core.runtime.Platform |
| .getExtensionRegistry(); |
| if (extensionRegistry == null) |
| { |
| return; |
| } |
| |
| org.eclipse.core.runtime.IConfigurationElement[] elements = extensionRegistry.getConfigurationElementsFor(NAMESPACE, |
| EXT_POINT); |
| for (org.eclipse.core.runtime.IConfigurationElement element : elements) |
| { |
| registerFactory(new FactoryDescriptor(element)); |
| } |
| |
| org.eclipse.core.runtime.IRegistryChangeListener listener = new org.eclipse.core.runtime.IRegistryChangeListener() |
| { |
| public void registryChanged(org.eclipse.core.runtime.IRegistryChangeEvent event) |
| { |
| org.eclipse.core.runtime.IExtensionDelta[] deltas = event.getExtensionDeltas(NAMESPACE, EXT_POINT); |
| for (org.eclipse.core.runtime.IExtensionDelta delta : deltas) |
| { |
| // TODO Handle ExtensionDelta |
| OM.LOG.warn("ExtensionDelta not handled: " + delta); //$NON-NLS-1$ |
| } |
| } |
| }; |
| |
| extensionRegistry.addRegistryChangeListener(listener, NAMESPACE); |
| extensionRegistryListener = listener; |
| } |
| |
| private void doDeactivateOSGi() |
| { |
| org.eclipse.core.runtime.IExtensionRegistry extensionRegistry = org.eclipse.core.runtime.Platform |
| .getExtensionRegistry(); |
| if (extensionRegistry == null) |
| { |
| return; |
| } |
| |
| extensionRegistry |
| .removeRegistryChangeListener((org.eclipse.core.runtime.IRegistryChangeListener)extensionRegistryListener); |
| } |
| } |