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/*******************************************************************************
* Copyright (c) 2013 Remain BV, Industrial-TSI BV 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:
* Wim Jongmam <wim.jongman@remainsoftware.com> - initial API and implementation
******************************************************************************/
package org.eclipse.e4.tools.emf.ui.internal.imp;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.e4.tools.emf.ui.common.IExtensionLookup;
import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.e4.ui.model.application.MApplicationElement;
import org.eclipse.e4.ui.model.application.commands.MCategory;
import org.eclipse.e4.ui.model.application.commands.MCommand;
import org.eclipse.e4.ui.model.application.commands.MCommandsFactory;
import org.eclipse.e4.ui.workbench.UIEvents.ApplicationElement;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceReference;
public class RegistryUtil {
/**
*
* @param t
* @param application
* @param elements
* @return
*/
public static MApplicationElement[] getModelElements(Class<? extends MApplicationElement> t, MApplication application, IConfigurationElement... elements) {
Assert.isNotNull(t);
Assert.isNotNull(elements);
Assert.isTrue(elements.length > 0);
if (t.equals(MCommand.class)) {
return getCommands(elements, application);
} else if (t.equals(MCategory.class)) {
return getCategories(elements);
}
return new MApplicationElement[0];
}
private static MCommand[] getCommands(IConfigurationElement[] elements, MApplication application) {
ArrayList<MCommand> result = new ArrayList<MCommand>();
MCommandsFactory commandsFactory = MCommandsFactory.INSTANCE;
for (IConfigurationElement element : elements) {
MCommand command = commandsFactory.createCommand();
command.setCommandName(element.getAttribute("name"));
command.setDescription(element.getAttribute("description"));
command.setElementId(element.getAttribute("id"));
String catId = element.getAttribute("categoryId");
if (catId != null && catId.trim().length() > 0) {
List<MCategory> categories = application.getCategories();
for (MCategory category : categories) {
if (category.getElementId().equals(catId)) {
command.setCategory(category);
break;
}
}
}
result.add((MCommand) command);
}
return result.toArray(new MCommand[0]);
}
private static MCategory[] getCategories(IConfigurationElement[] elements) {
ArrayList<MCategory> result = new ArrayList<MCategory>();
MCommandsFactory commandsFactory = MCommandsFactory.INSTANCE;
for (IConfigurationElement element : elements) {
MCategory category = commandsFactory.createCategory();
category.setDescription(element.getAttribute("description"));
category.setElementId(element.getAttribute("id"));
category.setName(element.getAttribute("name"));
result.add(category);
}
return result.toArray(new MCategory[0]);
}
/**
* Returns a list of bundle id's that have extension to the passed extension
* point.
*
* @param registry
* @param extensionPoint
* @return
*/
public static String[] getProvidingBundles(IExtensionRegistry registry, String extensionPoint, boolean isLive) {
IExtensionLookup service = getService(IExtensionLookup.class, null);
if (service == null) {
return new String[] { "No " + IExtensionLookup.class.getName() + " service found." };
}
ArrayList<String> result = new ArrayList<String>();
IExtension[] extensions = service.findExtensions(extensionPoint, isLive);
for (IExtension extension : extensions) {
IConfigurationElement[] elements = extension.getConfigurationElements();
for (IConfigurationElement element : elements) {
if (!result.contains(element.getContributor().getName())) {
result.add(element.getContributor().getName());
}
}
}
String[] resultArray = result.toArray(new String[0]);
Arrays.sort(resultArray);
return resultArray;
}
/**
*
* @param registry
* @param struct
* @return the array of {@link IConfigurationElement} objects that meets the
* passed criteria.
*/
public static IConfigurationElement[] getExtensions(IExtensionRegistry registry, RegistryStruct struct, boolean isLive) {
IExtensionLookup service = getService(IExtensionLookup.class, null);
if (struct == null || service == null) {
return new IConfigurationElement[0];
}
ArrayList<IConfigurationElement> result = new ArrayList<IConfigurationElement>();
IExtension[] extensions = service.findExtensions(struct.getExtensionPoint(), isLive);
for (IExtension extension : extensions) {
IConfigurationElement[] elements = extension.getConfigurationElements();
for (IConfigurationElement element : elements) {
if (element.getContributor().getName().equals(struct.getBundle())) {
if (element.getName().equals(struct.getExtensionPointName())) {
result.add(element);
}
}
}
}
return result.toArray(new IConfigurationElement[0]);
}
/**
* This will return a structure that contains the registry information we
* are looking for.
*
* @param applicationElement
* @return the structure that matches the extension registry to the passed
* {@link ApplicationElement}
*/
public static RegistryStruct getStruct(Class<? extends MApplicationElement> applicationElement) {
if (applicationElement == MCommand.class)
return new RegistryStruct("", "org.eclipse.ui.commands", "command", "name");
else if (applicationElement == MCategory.class)
return new RegistryStruct("", "org.eclipse.ui.commands", "category", "name");
return null;
}
private static <T> T getService(Class<T> clazz, String filter) {
try {
BundleContext context = FrameworkUtil.getBundle(RegistryUtil.class).getBundleContext();
Collection<ServiceReference<T>> references;
references = context.getServiceReferences(clazz, filter);
for (ServiceReference<T> reference : references) {
return context.getService(reference);
}
} catch (InvalidSyntaxException e) {
// FIXME log
}
return null;
}
}
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