bundles/org.eclipse.e4.tools.emf.ui/src/org/eclipse/e4/tools/emf/ui/internal/imp/RegistryUtil.java - e4/org.eclipse.e4.tools - Git at Google

 /*******************************************************************************
  * 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.model.application.commands.MHandler;
 import org.eclipse.e4.ui.model.application.descriptor.basic.MPartDescriptor;
 import org.eclipse.e4.ui.model.application.ui.advanced.MAdvancedFactory;
 import org.eclipse.e4.ui.model.application.ui.advanced.MPerspective;
 import org.eclipse.e4.ui.model.application.ui.basic.MInputPart;
 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
 import org.eclipse.e4.ui.model.application.ui.basic.impl.BasicPackageImpl;
 import org.eclipse.e4.ui.model.application.ui.menu.MMenu;
 import org.eclipse.e4.ui.model.application.ui.menu.MMenuFactory;
 import org.eclipse.e4.ui.model.application.ui.menu.MToolBar;
 import org.eclipse.e4.ui.workbench.UIEvents.ApplicationElement;
 import org.eclipse.emf.ecore.util.EcoreUtil;
 import org.osgi.framework.BundleContext;
 import org.osgi.framework.FrameworkUtil;
 import org.osgi.framework.InvalidSyntaxException;
 import org.osgi.framework.ServiceReference;

 public class RegistryUtil {

 	public final static String HINT_VIEW = "view";
 	public final static String HINT_EDITOR = "editor";
 	public final static String HINT_COMPAT_VIEW = "compatibilityView";

 	/**
 	 *
 	 * @param t
 	 * @param application
 	 * @param elements
 	 * @return
 	 */
 	public static MApplicationElement[] getModelElements(Class<? extends MApplicationElement> t, String hint, 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);
 		} else if (t.equals(MPerspective.class)) {
 			return getPerspectives(elements);
 		} else if (t.equals(MPart.class) && HINT_COMPAT_VIEW.equals(hint)) {
 			return getViewsAsCompatibilityViews(elements);
 		} else if (t.equals(MPart.class)) {
 			return getViews(elements);
 		} else if (t.equals(MInputPart.class)) {
 			return getEditors(elements);
 		} else if (t.equals(MHandler.class)) {
 			return getHandlers(elements, application);
 		} else if (t.equals(MPartDescriptor.class) && HINT_EDITOR.equals(hint)) {
 			return getEditorPartDescriptors(elements);
 		} else if (t.equals(MPartDescriptor.class) && HINT_VIEW.equals(hint)) {
 			return getViewPartDescriptors(elements);
 		} else if (t.equals(MPartDescriptor.class) && HINT_COMPAT_VIEW.equals(hint)) {
 			return getPartDescriptorsAsCompatibilyViews(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 MPerspective[] getPerspectives(IConfigurationElement[] elements) {

 		ArrayList<MPerspective> result = new ArrayList<MPerspective>();

 		MAdvancedFactory factory = MAdvancedFactory.INSTANCE;

 		for (IConfigurationElement element : elements) {
 			MPerspective perspective = factory.createPerspective();
 			perspective.setLabel(element.getAttribute("name"));
 			perspective.setIconURI(getIconURI(element, "icon"));
 			perspective.setElementId(element.getAttribute("id"));
 			perspective.setToBeRendered(true);
 			perspective.setVisible(true);
 			result.add((MPerspective) perspective);
 		}

 		return result.toArray(new MPerspective[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]);
 	}

 	private static MPart[] getViews(IConfigurationElement[] elements) {

 		ArrayList<MPart> result = new ArrayList<MPart>();
 		for (IConfigurationElement element : elements) {
 			MPart part = (MPart) EcoreUtil.create(BasicPackageImpl.Literals.PART);
 			part.setElementId(element.getAttribute("id"));
 			part.setLabel(element.getAttribute("name"));
 			part.setIconURI(getIconURI(element, "icon"));
 			part.setContributionURI(getContributionURI(element, "class"));
 			part.setToBeRendered(true);
 			part.setVisible(true);
 			part.setToolbar(createToolBar(part));
 			part.getMenus().add(createViewMenu(part));
 			part.setCloseable(true);
 			part.getTags().add("View");
 			if (element.getAttribute("category") != null) {
 				part.getTags().add("categoryTag:" + element.getAttribute("category"));
 			}

 			result.add(part);
 		}

 		return result.toArray(new MPart[0]);
 	}

 	private static MToolBar createToolBar(MPart part) {
 		MToolBar toolBar = MMenuFactory.INSTANCE.createToolBar();
 		toolBar.setElementId(part.getElementId());
 		return toolBar;
 	}

 	private static MMenu createViewMenu(MPart part) {
 		MMenu menu = MMenuFactory.INSTANCE.createMenu();
 		menu.setElementId(part.getElementId());
 		menu.getTags().add("ViewMenu");
 		return menu;
 	}

 	private static MPart[] getViewsAsCompatibilityViews(IConfigurationElement[] elements) {
 		ArrayList<MPart> result = new ArrayList<MPart>();
 		MPart[] parts = getViews(elements);
 		for (MPart part : parts) {
 			part.setContributionURI("bundleclass://org.eclipse.ui.workbench/org.eclipse.ui.internal.e4.compatibility.CompatibilityView");
 			result.add(part);
 		}
 		return result.toArray(new MPart[0]);
 	}

 	private static MPartDescriptor[] getPartDescriptorsAsCompatibilyViews(IConfigurationElement[] elements) {
 		ArrayList<MPartDescriptor> result = new ArrayList<MPartDescriptor>();
 		MPartDescriptor[] parts = getViewPartDescriptors(elements);
 		for (MPartDescriptor part : parts) {
 			part.setContributionURI("bundleclass://org.eclipse.ui.workbench/org.eclipse.ui.internal.e4.compatibility.CompatibilityView");
 			result.add(part);
 		}
 		return result.toArray(new MPartDescriptor[0]);
 	}

 	private static MInputPart[] getEditors(IConfigurationElement[] elements) {

 		ArrayList<MInputPart> result = new ArrayList<MInputPart>();
 		for (IConfigurationElement element : elements) {
 			if ("editor".equals(element.getName())) /* Sanity Check */{
 				MInputPart part = (MInputPart) EcoreUtil.create(BasicPackageImpl.Literals.INPUT_PART);
 				part.setElementId(element.getAttribute("id"));
 				part.setLabel(element.getAttribute("name"));
 				part.setIconURI(getIconURI(element, "icon"));
 				if (element.getAttribute("class") != null) {
 					part.setContributionURI(getContributionURI(element, "class"));
 				} else {
 					part.setContributionURI(getContributionURI(element, "launcher"));
 				}
 				part.setToBeRendered(true);
 				part.setVisible(true);
 				part.setToolbar(createToolBar(part));
 				part.getMenus().add(createViewMenu(part));
 				part.setCloseable(true);
 				result.add(part);
 			}
 		}

 		return result.toArray(new MInputPart[0]);
 	}

 	private static MPartDescriptor[] getEditorPartDescriptors(IConfigurationElement[] elements) {

 		ArrayList<MPartDescriptor> result = new ArrayList<MPartDescriptor>();
 		for (IConfigurationElement element : elements) {
 			MPartDescriptor part = (MPartDescriptor) EcoreUtil.create(org.eclipse.e4.ui.model.application.descriptor.basic.impl.BasicPackageImpl.Literals.PART_DESCRIPTOR);
 			part.setElementId(element.getAttribute("id"));
 			part.setLabel(element.getAttribute("name"));
 			part.setIconURI(getIconURI(element, "icon"));
 			if (element.getAttribute("class") != null) {
 				part.setContributionURI(getContributionURI(element, "class"));
 			} else {
 				part.setContributionURI(getContributionURI(element, "launcher"));
 			}
 			part.setDirtyable(true);
 			part.setAllowMultiple(true);

 			MToolBar toolBar = MMenuFactory.INSTANCE.createToolBar();
 			toolBar.setElementId(part.getElementId());
 			part.setToolbar(toolBar);

 			MMenu menu = MMenuFactory.INSTANCE.createMenu();
 			menu.setElementId(part.getElementId());
 			menu.getTags().add("ViewMenu");
 			part.getMenus().add(menu);

 			part.setCloseable(true);
 			result.add(part);
 		}

 		return result.toArray(new MPartDescriptor[0]);
 	}

 	private static MPartDescriptor[] getViewPartDescriptors(IConfigurationElement[] elements) {

 		ArrayList<MPartDescriptor> result = new ArrayList<MPartDescriptor>();
 		for (IConfigurationElement element : elements) {
 			MPartDescriptor part = (MPartDescriptor) EcoreUtil.create(org.eclipse.e4.ui.model.application.descriptor.basic.impl.BasicPackageImpl.Literals.PART_DESCRIPTOR);
 			part.setElementId(element.getAttribute("id"));
 			part.setLabel(element.getAttribute("name"));
 			part.setIconURI(getIconURI(element, "icon"));

 			MToolBar toolBar = MMenuFactory.INSTANCE.createToolBar();
 			toolBar.setElementId(part.getElementId());
 			part.setToolbar(toolBar);

 			MMenu menu = MMenuFactory.INSTANCE.createMenu();
 			menu.setElementId(part.getElementId());
 			menu.getTags().add("ViewMenu");
 			part.getMenus().add(menu);

 			part.setCloseable(true);
 			result.add(part);
 		}

 		return result.toArray(new MPartDescriptor[0]);
 	}

 	private static MHandler[] getHandlers(IConfigurationElement[] elements, MApplication application) {

 		ArrayList<MHandler> result = new ArrayList<MHandler>();
 		for (IConfigurationElement element : elements) {
 			MHandler hand = (MHandler) MCommandsFactory.INSTANCE.createHandler();
 			hand.setElementId(element.getAttribute("id"));
 			hand.setContributionURI(getContributionURI(element, "class"));

 			String cmdId = element.getAttribute("commandId");

 			if (cmdId != null && cmdId.trim().length() > 0) {
 				List<MCommand> categories = application.getCommands();
 				for (MCommand command : categories) {
 					if (command.getElementId().equals(cmdId)) {
 						hand.setCommand(command);
 						break;
 					}
 				}
 			}
 			result.add(hand);
 		}
 		return result.toArray(new MHandler[0]);
 	}

 	private static String getIconURI(IConfigurationElement element, String attribute) {
 		if (element.getAttribute(attribute) == null) {
 			return "";
 		}
 		// FIXME any other cases?
 		if (element.getAttribute(attribute).startsWith("platform:")) {
 			return element.getAttribute(attribute);
 		}
 		return "platform:/plugin/" + element.getContributor().getName() + "/" + element.getAttribute(attribute);
 	}

 	private static String getContributionURI(IConfigurationElement element, String attribute) {
 		return "bundleclass://" + element.getContributor().getName() + "/" + element.getAttribute(attribute);
 	}

 	/**
 	 * 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, String hint) {

 		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");

 		else if (applicationElement == MPerspective.class)
 			return new RegistryStruct("", "org.eclipse.ui.perspectives", "perspective", "name");

 		else if (applicationElement == MPart.class)
 			return new RegistryStruct("", "org.eclipse.ui.views", "view", "name");

 		else if (applicationElement == MHandler.class)
 			return new RegistryStruct("", "org.eclipse.ui.handlers", "handler", "commandId");

 		else if (applicationElement == MPart.class) {
 			return new RegistryStruct("", "org.eclipse.ui.views", "view", "name");
 		}

 		else if (applicationElement == MInputPart.class) {
 			return new RegistryStruct("", "org.eclipse.ui.editors", "editor", "name");
 		}

 		else if (applicationElement == MPartDescriptor.class) {
 			if (hint == HINT_EDITOR)
 				return new RegistryStruct("", "org.eclipse.ui.editors", "editor", "name");
 			if (hint == HINT_VIEW || hint == HINT_COMPAT_VIEW)
 				return new RegistryStruct("", "org.eclipse.ui.views", "view", "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;
 	}
 }
	/*******************************************************************************
	* 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.model.application.commands.MHandler;
	import org.eclipse.e4.ui.model.application.descriptor.basic.MPartDescriptor;
	import org.eclipse.e4.ui.model.application.ui.advanced.MAdvancedFactory;
	import org.eclipse.e4.ui.model.application.ui.advanced.MPerspective;
	import org.eclipse.e4.ui.model.application.ui.basic.MInputPart;
	import org.eclipse.e4.ui.model.application.ui.basic.MPart;
	import org.eclipse.e4.ui.model.application.ui.basic.impl.BasicPackageImpl;
	import org.eclipse.e4.ui.model.application.ui.menu.MMenu;
	import org.eclipse.e4.ui.model.application.ui.menu.MMenuFactory;
	import org.eclipse.e4.ui.model.application.ui.menu.MToolBar;
	import org.eclipse.e4.ui.workbench.UIEvents.ApplicationElement;
	import org.eclipse.emf.ecore.util.EcoreUtil;
	import org.osgi.framework.BundleContext;
	import org.osgi.framework.FrameworkUtil;
	import org.osgi.framework.InvalidSyntaxException;
	import org.osgi.framework.ServiceReference;

	public class RegistryUtil {

	public final static String HINT_VIEW = "view";
	public final static String HINT_EDITOR = "editor";
	public final static String HINT_COMPAT_VIEW = "compatibilityView";

	/**
	*
	* @param t
	* @param application
	* @param elements
	* @return
	*/
	public static MApplicationElement[] getModelElements(Class<? extends MApplicationElement> t, String hint, 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);
	} else if (t.equals(MPerspective.class)) {
	return getPerspectives(elements);
	} else if (t.equals(MPart.class) && HINT_COMPAT_VIEW.equals(hint)) {
	return getViewsAsCompatibilityViews(elements);
	} else if (t.equals(MPart.class)) {
	return getViews(elements);
	} else if (t.equals(MInputPart.class)) {
	return getEditors(elements);
	} else if (t.equals(MHandler.class)) {
	return getHandlers(elements, application);
	} else if (t.equals(MPartDescriptor.class) && HINT_EDITOR.equals(hint)) {
	return getEditorPartDescriptors(elements);
	} else if (t.equals(MPartDescriptor.class) && HINT_VIEW.equals(hint)) {
	return getViewPartDescriptors(elements);
	} else if (t.equals(MPartDescriptor.class) && HINT_COMPAT_VIEW.equals(hint)) {
	return getPartDescriptorsAsCompatibilyViews(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 MPerspective[] getPerspectives(IConfigurationElement[] elements) {

	ArrayList<MPerspective> result = new ArrayList<MPerspective>();

	MAdvancedFactory factory = MAdvancedFactory.INSTANCE;

	for (IConfigurationElement element : elements) {
	MPerspective perspective = factory.createPerspective();
	perspective.setLabel(element.getAttribute("name"));
	perspective.setIconURI(getIconURI(element, "icon"));
	perspective.setElementId(element.getAttribute("id"));
	perspective.setToBeRendered(true);
	perspective.setVisible(true);
	result.add((MPerspective) perspective);
	}

	return result.toArray(new MPerspective[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]);
	}

	private static MPart[] getViews(IConfigurationElement[] elements) {

	ArrayList<MPart> result = new ArrayList<MPart>();
	for (IConfigurationElement element : elements) {
	MPart part = (MPart) EcoreUtil.create(BasicPackageImpl.Literals.PART);
	part.setElementId(element.getAttribute("id"));
	part.setLabel(element.getAttribute("name"));
	part.setIconURI(getIconURI(element, "icon"));
	part.setContributionURI(getContributionURI(element, "class"));
	part.setToBeRendered(true);
	part.setVisible(true);
	part.setToolbar(createToolBar(part));
	part.getMenus().add(createViewMenu(part));
	part.setCloseable(true);
	part.getTags().add("View");
	if (element.getAttribute("category") != null) {
	part.getTags().add("categoryTag:" + element.getAttribute("category"));
	}

	result.add(part);
	}

	return result.toArray(new MPart[0]);
	}

	private static MToolBar createToolBar(MPart part) {
	MToolBar toolBar = MMenuFactory.INSTANCE.createToolBar();
	toolBar.setElementId(part.getElementId());
	return toolBar;
	}

	private static MMenu createViewMenu(MPart part) {
	MMenu menu = MMenuFactory.INSTANCE.createMenu();
	menu.setElementId(part.getElementId());
	menu.getTags().add("ViewMenu");
	return menu;
	}

	private static MPart[] getViewsAsCompatibilityViews(IConfigurationElement[] elements) {
	ArrayList<MPart> result = new ArrayList<MPart>();
	MPart[] parts = getViews(elements);
	for (MPart part : parts) {
	part.setContributionURI("bundleclass://org.eclipse.ui.workbench/org.eclipse.ui.internal.e4.compatibility.CompatibilityView");
	result.add(part);
	}
	return result.toArray(new MPart[0]);
	}

	private static MPartDescriptor[] getPartDescriptorsAsCompatibilyViews(IConfigurationElement[] elements) {
	ArrayList<MPartDescriptor> result = new ArrayList<MPartDescriptor>();
	MPartDescriptor[] parts = getViewPartDescriptors(elements);
	for (MPartDescriptor part : parts) {
	part.setContributionURI("bundleclass://org.eclipse.ui.workbench/org.eclipse.ui.internal.e4.compatibility.CompatibilityView");
	result.add(part);
	}
	return result.toArray(new MPartDescriptor[0]);
	}

	private static MInputPart[] getEditors(IConfigurationElement[] elements) {

	ArrayList<MInputPart> result = new ArrayList<MInputPart>();
	for (IConfigurationElement element : elements) {
	if ("editor".equals(element.getName())) /* Sanity Check */{
	MInputPart part = (MInputPart) EcoreUtil.create(BasicPackageImpl.Literals.INPUT_PART);
	part.setElementId(element.getAttribute("id"));
	part.setLabel(element.getAttribute("name"));
	part.setIconURI(getIconURI(element, "icon"));
	if (element.getAttribute("class") != null) {
	part.setContributionURI(getContributionURI(element, "class"));
	} else {
	part.setContributionURI(getContributionURI(element, "launcher"));
	}
	part.setToBeRendered(true);
	part.setVisible(true);
	part.setToolbar(createToolBar(part));
	part.getMenus().add(createViewMenu(part));
	part.setCloseable(true);
	result.add(part);
	}
	}

	return result.toArray(new MInputPart[0]);
	}

	private static MPartDescriptor[] getEditorPartDescriptors(IConfigurationElement[] elements) {

	ArrayList<MPartDescriptor> result = new ArrayList<MPartDescriptor>();
	for (IConfigurationElement element : elements) {
	MPartDescriptor part = (MPartDescriptor) EcoreUtil.create(org.eclipse.e4.ui.model.application.descriptor.basic.impl.BasicPackageImpl.Literals.PART_DESCRIPTOR);
	part.setElementId(element.getAttribute("id"));
	part.setLabel(element.getAttribute("name"));
	part.setIconURI(getIconURI(element, "icon"));
	if (element.getAttribute("class") != null) {
	part.setContributionURI(getContributionURI(element, "class"));
	} else {
	part.setContributionURI(getContributionURI(element, "launcher"));
	}
	part.setDirtyable(true);
	part.setAllowMultiple(true);

	MToolBar toolBar = MMenuFactory.INSTANCE.createToolBar();
	toolBar.setElementId(part.getElementId());
	part.setToolbar(toolBar);

	MMenu menu = MMenuFactory.INSTANCE.createMenu();
	menu.setElementId(part.getElementId());
	menu.getTags().add("ViewMenu");
	part.getMenus().add(menu);

	part.setCloseable(true);
	result.add(part);
	}

	return result.toArray(new MPartDescriptor[0]);
	}

	private static MPartDescriptor[] getViewPartDescriptors(IConfigurationElement[] elements) {

	ArrayList<MPartDescriptor> result = new ArrayList<MPartDescriptor>();
	for (IConfigurationElement element : elements) {
	MPartDescriptor part = (MPartDescriptor) EcoreUtil.create(org.eclipse.e4.ui.model.application.descriptor.basic.impl.BasicPackageImpl.Literals.PART_DESCRIPTOR);
	part.setElementId(element.getAttribute("id"));
	part.setLabel(element.getAttribute("name"));
	part.setIconURI(getIconURI(element, "icon"));

	MToolBar toolBar = MMenuFactory.INSTANCE.createToolBar();
	toolBar.setElementId(part.getElementId());
	part.setToolbar(toolBar);

	MMenu menu = MMenuFactory.INSTANCE.createMenu();
	menu.setElementId(part.getElementId());
	menu.getTags().add("ViewMenu");
	part.getMenus().add(menu);

	part.setCloseable(true);
	result.add(part);
	}

	return result.toArray(new MPartDescriptor[0]);
	}

	private static MHandler[] getHandlers(IConfigurationElement[] elements, MApplication application) {

	ArrayList<MHandler> result = new ArrayList<MHandler>();
	for (IConfigurationElement element : elements) {
	MHandler hand = (MHandler) MCommandsFactory.INSTANCE.createHandler();
	hand.setElementId(element.getAttribute("id"));
	hand.setContributionURI(getContributionURI(element, "class"));

	String cmdId = element.getAttribute("commandId");

	if (cmdId != null && cmdId.trim().length() > 0) {
	List<MCommand> categories = application.getCommands();
	for (MCommand command : categories) {
	if (command.getElementId().equals(cmdId)) {
	hand.setCommand(command);
	break;
	}
	}
	}
	result.add(hand);
	}
	return result.toArray(new MHandler[0]);
	}

	private static String getIconURI(IConfigurationElement element, String attribute) {
	if (element.getAttribute(attribute) == null) {
	return "";
	}
	// FIXME any other cases?
	if (element.getAttribute(attribute).startsWith("platform:")) {
	return element.getAttribute(attribute);
	}
	return "platform:/plugin/" + element.getContributor().getName() + "/" + element.getAttribute(attribute);
	}

	private static String getContributionURI(IConfigurationElement element, String attribute) {
	return "bundleclass://" + element.getContributor().getName() + "/" + element.getAttribute(attribute);
	}

	/**
	* 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, String hint) {

	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");

	else if (applicationElement == MPerspective.class)
	return new RegistryStruct("", "org.eclipse.ui.perspectives", "perspective", "name");

	else if (applicationElement == MPart.class)
	return new RegistryStruct("", "org.eclipse.ui.views", "view", "name");

	else if (applicationElement == MHandler.class)
	return new RegistryStruct("", "org.eclipse.ui.handlers", "handler", "commandId");

	else if (applicationElement == MPart.class) {
	return new RegistryStruct("", "org.eclipse.ui.views", "view", "name");
	}

	else if (applicationElement == MInputPart.class) {
	return new RegistryStruct("", "org.eclipse.ui.editors", "editor", "name");
	}

	else if (applicationElement == MPartDescriptor.class) {
	if (hint == HINT_EDITOR)
	return new RegistryStruct("", "org.eclipse.ui.editors", "editor", "name");
	if (hint == HINT_VIEW \|\| hint == HINT_COMPAT_VIEW)
	return new RegistryStruct("", "org.eclipse.ui.views", "view", "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;
	}
	}