/** | |
* Copyright (c) 2009-2010 Thales Corporate Services S.A.S. | |
* This program and the accompanying materials | |
* are made available under the terms of the Eclipse Public License v2.0 | |
* which accompanies this distribution, and is available at | |
* https://www.eclipse.org/legal/epl-v2.0 | |
* | |
* SPDX-License-Identifier: EPL-2.0 | |
* | |
* Contributors: | |
* Thales Corporate Services S.A.S - initial API and implementation | |
*/ | |
package org.eclipse.egf.pattern.internal.registry; | |
import java.util.HashMap; | |
import java.util.Iterator; | |
import java.util.Map; | |
import java.util.Set; | |
import org.eclipse.core.runtime.CoreException; | |
import org.eclipse.core.runtime.IConfigurationElement; | |
import org.eclipse.core.runtime.IExtension; | |
import org.eclipse.core.runtime.IExtensionPoint; | |
import org.eclipse.core.runtime.IRegistryEventListener; | |
import org.eclipse.core.runtime.IStatus; | |
import org.eclipse.core.runtime.RegistryFactory; | |
import org.eclipse.egf.common.l10n.EGFCommonMessages; | |
import org.eclipse.egf.model.EGFModelPlugin; | |
import org.eclipse.egf.model.pattern.PatternNature; | |
import org.eclipse.egf.pattern.EGFPatternPlugin; | |
import org.eclipse.egf.pattern.extension.PatternExtension; | |
import org.eclipse.egf.pattern.l10n.EGFPatternMessages; | |
import org.eclipse.osgi.util.NLS; | |
/** | |
* @author Xavier Maysonnave | |
* | |
*/ | |
public final class PatternExtensionRegistry implements IRegistryEventListener { | |
private Map<String, PatternExtensionProxy> _proxies; | |
/** | |
* Define a constant for the pattern extension extension-point id. | |
*/ | |
public static final String EXTENSION_ID = "org.eclipse.egf.pattern.extension"; //$NON-NLS-1$ | |
/** | |
* Define a constant for the 'nature' attribute. | |
*/ | |
public static final String ATT_NATURE = "nature"; //$NON-NLS-1$ | |
/** | |
* Define a constant for the 'class' attribute. | |
*/ | |
public static final String ATT_CLASS = "class"; //$NON-NLS-1$ | |
public PatternExtensionRegistry() { | |
initialize(); | |
RegistryFactory.getRegistry().addListener(this, EXTENSION_ID); | |
} | |
public Set<String> getPatternNatures() { | |
return _proxies.keySet(); | |
} | |
public PatternExtension getPatternExtension(PatternNature nature) throws CoreException { | |
PatternExtensionProxy proxy = _proxies.get(nature.eClass().getName()); | |
if (proxy == null) { | |
throw new CoreException(EGFModelPlugin.getPlugin().newStatus(IStatus.ERROR, NLS.bind(EGFPatternMessages.PatternExtensionRegistry_extension_error, nature.eClass().getInstanceTypeName()), null)); | |
} | |
return proxy.getPatternExtension(); | |
} | |
public PatternExtension getPatternExtension(String name) throws CoreException { | |
for (PatternExtensionProxy proxy : _proxies.values()) { | |
if (name.equals(proxy.getName())) { | |
return proxy.getPatternExtension(); | |
} | |
} | |
return null; | |
} | |
private void initialize() { | |
if (_proxies != null) { | |
return; | |
} | |
_proxies = new HashMap<String, PatternExtensionProxy>(); | |
IExtensionPoint point = RegistryFactory.getRegistry().getExtensionPoint(EXTENSION_ID); | |
if (point != null) { | |
for (IExtension extension : point.getExtensions()) { | |
for (IConfigurationElement element : extension.getConfigurationElements()) { | |
register(element); | |
} | |
} | |
} | |
} | |
private void register(IConfigurationElement element) { | |
if (element == null) { | |
return; | |
} | |
PatternExtensionProxy proxy = PatternExtensionProxy.createProxy(element); | |
if (proxy != null) { | |
if (_proxies.get(proxy.getName()) != null) { | |
EGFPatternPlugin.getDefault().logError(NLS.bind(EGFCommonMessages.Duplicate_Element_Message, proxy.getNature())); | |
EGFPatternPlugin.getDefault().logInfo(NLS.bind(EGFCommonMessages.Bundle_Message, element.getContributor().getName()), 1); | |
EGFPatternPlugin.getDefault().logInfo(NLS.bind(EGFCommonMessages.Extension_Point_Message, element.getName()), 1); | |
} | |
_proxies.put(proxy.getName(), proxy); | |
} | |
} | |
public void added(IExtension[] extensions) { | |
if (extensions == null) { | |
return; | |
} | |
for (IExtension extension : extensions) { | |
for (IConfigurationElement element : extension.getConfigurationElements()) { | |
register(element); | |
} | |
} | |
} | |
public void removed(IExtension[] extensions) { | |
for (int i = 0; i < extensions.length; i++) { | |
for (Iterator<PatternExtensionProxy> it = _proxies.values().iterator(); it.hasNext();) { | |
PatternExtensionProxy proxy = it.next(); | |
if (proxy.originatesFrom(extensions[i])) { | |
it.remove(); | |
} | |
} | |
} | |
} | |
public void added(IExtensionPoint[] extensionPoints) { | |
// Nothing to do | |
} | |
public void removed(IExtensionPoint[] extensionPoints) { | |
// Nothing to do | |
} | |
public void dispose() { | |
RegistryFactory.getRegistry().removeListener(this); | |
_proxies = null; | |
} | |
} |