1.5/plugins/org.eclipse.epf.library.edit/src/org/eclipse/epf/library/edit/element/ContentPackageItemProvider.java - epf/org.eclipse.epf.composer - Git at Google

 //------------------------------------------------------------------------------
 // Copyright (c) 2005, 2006 IBM Corporation 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:
 // IBM Corporation - initial implementation
 //------------------------------------------------------------------------------
 package org.eclipse.epf.library.edit.element;

 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;

 import org.eclipse.emf.common.command.Command;
 import org.eclipse.emf.common.notify.AdapterFactory;
 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.ecore.EStructuralFeature;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.edit.command.AddCommand;
 import org.eclipse.emf.edit.command.CommandParameter;
 import org.eclipse.emf.edit.domain.EditingDomain;
 import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
 import org.eclipse.epf.library.edit.IFilter;
 import org.eclipse.epf.library.edit.ILibraryItemProvider;
 import org.eclipse.epf.library.edit.IStatefulItemProvider;
 import org.eclipse.epf.library.edit.PresentationContext;
 import org.eclipse.epf.library.edit.command.MethodElementAddCommand;
 import org.eclipse.epf.library.edit.util.TngUtil;
 import org.eclipse.epf.uma.ContentPackage;
 import org.eclipse.epf.uma.MethodElement;
 import org.eclipse.epf.uma.MethodPackage;
 import org.eclipse.epf.uma.UmaFactory;
 import org.eclipse.epf.uma.UmaPackage;

 /**
  * The item provider adapter for the "Content Packages" folder in the Library
  * view.
  * <p>
  * This class will be renamed as ContentPackagesItemProvider in EPF M5.
  *
  * @author Phong Nguyen Le
  * @author Kelvin Low
  * @since 1.0
  */
 public class ContentPackageItemProvider extends
 		org.eclipse.epf.uma.provider.ContentPackageItemProvider implements
 		IElementItemProvider, ILibraryItemProvider, IStatefulItemProvider {

 	protected RolesItemProvider roles;

 	protected TasksItemProvider tasks;

 	protected WorkProductsItemProvider workProducts;

 	protected GuidancesItemProvider guidances;

 	protected String label;

 	protected Object parent;

 	/**
 	 * Creates a new instance.
 	 */
 	public ContentPackageItemProvider(AdapterFactory adapterFactory) {
 		super(adapterFactory);
 	}

 	/**
 	 * @return Returns the roles.
 	 */
 	public RolesItemProvider getRoles() {
 		return roles;
 	}

 	/**
 	 * @return Returns the tasks.
 	 */
 	public TasksItemProvider getTasks() {
 		return tasks;
 	}

 	/**
 	 * @return Returns the workProducts.
 	 */
 	public WorkProductsItemProvider getWorkProducts() {
 		return workProducts;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getChildrenFeatures(java.lang.Object)
 	 */
 	// public Collection getChildrenFeatures(Object object) {
 	// if (childrenFeatures == null) {
 	// childrenFeatures = new ArrayList();
 	// childrenFeatures.add(UmaPackage.eINSTANCE.getMethodPackage_ChildPackages());
 	// }
 	// return childrenFeatures;
 	// }
 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getChildren(java.lang.Object)
 	 */
 	public Collection getChildren(Object object) {
 		List allChildren = new ArrayList();
 		ChildrenStore store = getChildrenStore(object);
 		List result = null;
 		if (store == null) {
 			store = createChildrenStore(object);
 			result = store != null ? null : new ArrayList();
 			EObject eObject = (EObject) object;

 			for (Iterator i = getChildrenFeatures(object).iterator(); i
 					.hasNext();) {
 				EStructuralFeature feature = (EStructuralFeature) i.next();
 				if (feature.isMany()) {
 					List children = (List) eObject.eGet(feature);
 					List contentPkgs = new ArrayList();
 					int index = 0;
 					for (Iterator ci = children.iterator(); ci.hasNext(); index++) {
 						Object child = ci.next();
 						if (child instanceof ContentPackage) {
 							child = wrap(eObject, feature, child, index);
 							// if (store != null)
 							// {
 							// store.getList(feature).add(child);
 							// }
 							// else
 							// {
 							// result.add(child);
 							// }
 							contentPkgs.add(child);
 						}
 					}

 					// clear parent for children
 					//
 					for (Iterator iter = children.iterator(); iter.hasNext();) {
 						Object child = (Object) iter.next();
 						Object adapter = adapterFactory.adapt(child,
 								ITreeItemContentProvider.class);
 						if (adapter instanceof ILibraryItemProvider) {
 							((ILibraryItemProvider) adapter).setParent(null);
 						}
 					}

 					// sorting the content packages
 					//
 					Collections.sort(contentPkgs, PresentationContext.INSTANCE
 							.getComparator());

 					if (store != null) {
 						store.getList(feature).addAll(contentPkgs);
 					} else {
 						result.addAll(contentPkgs);
 					}
 				} else {
 					Object child = eObject.eGet(feature);
 					if (child instanceof ContentPackage) {
 						child = wrap(eObject, feature, child,
 								CommandParameter.NO_INDEX);
 						if (store != null) {
 							store.setValue(feature, child);
 						} else {
 							result.add(child);
 						}
 					}
 				}
 			}
 		}
 		allChildren.addAll(store != null ? store.getChildren() : result);
 		ContentPackage contentPkg = (ContentPackage) object;

 		// remove old adapters (roles, tasks, workproducts) from the the
 		// contentPkg
 		//
 		// EObject eObj = (EObject) object;
 		if (roles == null) {
 			// eObj.eAdapters().remove(roles);
 			roles = new RolesItemProvider(adapterFactory, contentPkg);
 		}
 		if (tasks == null) {
 			// eObj.eAdapters().remove(tasks);
 			tasks = new TasksItemProvider(adapterFactory, contentPkg);
 		}
 		if (workProducts == null) {
 			// eObj.eAdapters().remove(workProducts);
 			workProducts = new WorkProductsItemProvider(adapterFactory,
 					contentPkg);
 		}
 		if (guidances == null) {
 			// eObj.eAdapters().remove(guidances);
 			guidances = new GuidancesItemProvider(adapterFactory, contentPkg);
 		}

 		allChildren.add(roles);
 		allChildren.add(tasks);
 		allChildren.add(workProducts);
 		allChildren.add(guidances);
 		return allChildren;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.emf.edit.provider.ItemProviderAdapter#collectNewChildDescriptors(java.util.Collection,
 	 *      java.lang.Object)
 	 */
 	protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors,
 			Object object) {
 		newChildDescriptors.add(createChildParameter(UmaPackage.eINSTANCE
 				.getMethodPackage_ChildPackages(), UmaFactory.eINSTANCE
 				.createContentPackage()));
 	}

 	// /* (non-Javadoc)
 	// * @see
 	// org.eclipse.emf.edit.provider.ItemProviderAdapter#createCommand(java.lang.Object,
 	// org.eclipse.emf.edit.domain.EditingDomain, java.lang.Class,
 	// org.eclipse.emf.edit.command.CommandParameter)
 	// */
 	// public Command createCommand(Object object, EditingDomain domain,
 	// Class commandClass, CommandParameter commandParameter) {
 	// // commandParameter.setOwner(((EObject)object).eContainer());
 	// Command cmd = super.createCommand(object, domain, commandClass,
 	// commandParameter);
 	// System.out.println(getClass().getName() + "#createCommand: " +
 	// commandClass + ", can execute: " + cmd.canExecute() + ", owner: " +
 	// commandParameter.getOwner() + ", collection: " +
 	// commandParameter.getCollection());
 	// return cmd;
 	// }

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getText(java.lang.Object)
 	 */
 	public String getText(Object object) {
 		String txt;
 		if (label != null) {
 			txt = label;
 		} else {
 			txt = TngUtil
 					.getLabel(object, getString("_UI_ContentPackage_type")); //$NON-NLS-1$
 		}
 		// check if the object has its own resource and it is modified to add
 		// the dirty flag
 		//
 		Resource res = ((EObject) object).eResource();
 		if (res != null && res.getContents().get(0) == object
 				&& res.isModified()) {
 			txt = txt + "*"; //$NON-NLS-1$
 		}
 		return txt;
 	}

 	private void setDefaultName(Object obj) {
 		ContentPackage contentPackage = (ContentPackage) target;
 		if (obj instanceof ContentPackage) {
 			TngUtil.setDefaultName(contentPackage.getChildPackages(),
 					(MethodElement) obj, "content_package"); //$NON-NLS-1$
 		} else {
 			TngUtil.setDefaultName(contentPackage.getChildPackages(),
 					(MethodElement) obj, "method_package"); //$NON-NLS-1$
 		}
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.emf.common.notify.Adapter#notifyChanged(org.eclipse.emf.common.notify.Notification)
 	 */
 	public void notifyChanged(Notification msg) {
 		TngUtil.refreshParentIfNameChanged(msg, this);

 		switch (msg.getFeatureID(ContentPackage.class)) {
 		case UmaPackage.CONTENT_PACKAGE__CONTENT_ELEMENTS:
 			return;
 		case UmaPackage.CONTENT_PACKAGE__CHILD_PACKAGES:
 			switch (msg.getEventType()) {
 			case Notification.ADD:
 				setDefaultName(msg.getNewValue());
 				break;
 			case Notification.ADD_MANY:
 				for (Iterator iter = ((Collection) msg.getNewValue())
 						.iterator(); iter.hasNext();) {
 					setDefaultName(iter.next());
 				}
 				break;
 			}
 		}

 		super.notifyChanged(msg);
 	}

 	/**
 	 * @return
 	 */
 	public GuidancesItemProvider getGuidances() {
 		return guidances;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see com.ibm.library.edit.IConfigurable#setFilter(com.ibm.library.edit.IFilter)
 	 */
 	public void setFilter(IFilter filter) {
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see com.ibm.library.edit.IConfigurable#setLabel(java.lang.String)
 	 */
 	public void setLabel(String label) {
 		this.label = label;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see com.ibm.library.edit.IConfigurable#setParent(java.lang.Object)
 	 */
 	public void setParent(Object parent) {
 		this.parent = parent;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getParent(java.lang.Object)
 	 */
 	public Object getParent(Object object) {
 		if (parent != null)
 			return parent;
 		return super.getParent(object);
 	}

 	// public Object getImage(Object object) {
 	// return TngEditPlugin.INSTANCE.getImage("full/obj16/MethodPackages");
 	// }

 	protected Command createAddCommand(EditingDomain domain, EObject owner,
 			EStructuralFeature feature, Collection collection, int index) {
 		ArrayList selection = new ArrayList();
 		for (Iterator iter = collection.iterator(); iter.hasNext();) {
 			Object element = iter.next();

 			// make sure that you cannot add MethodPackage that is not a
 			// ContentPackage
 			//
 			if (element instanceof MethodPackage
 					&& !(element instanceof ContentPackage)) {
 				continue;
 			}

 			selection.add(element);
 		}

 		return new MethodElementAddCommand((AddCommand) super.createAddCommand(
 				domain, owner, feature, selection, index));
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.emf.edit.provider.ItemProviderAdapter#dispose()
 	 */
 	public void dispose() {
 		if (guidances != null) {
 			guidances.dispose();
 			guidances = null;
 		}
 		if (roles != null) {
 			roles.dispose();
 			roles = null;
 		}
 		if (tasks != null) {
 			tasks.dispose();
 			tasks = null;
 		}
 		if (workProducts != null) {
 			workProducts.dispose();
 			workProducts = null;
 		}
 		super.dispose();
 	}

 }
	//------------------------------------------------------------------------------
	// Copyright (c) 2005, 2006 IBM Corporation 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:
	// IBM Corporation - initial implementation
	//------------------------------------------------------------------------------
	package org.eclipse.epf.library.edit.element;

	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Collections;
	import java.util.Iterator;
	import java.util.List;

	import org.eclipse.emf.common.command.Command;
	import org.eclipse.emf.common.notify.AdapterFactory;
	import org.eclipse.emf.common.notify.Notification;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.emf.ecore.EStructuralFeature;
	import org.eclipse.emf.ecore.resource.Resource;
	import org.eclipse.emf.edit.command.AddCommand;
	import org.eclipse.emf.edit.command.CommandParameter;
	import org.eclipse.emf.edit.domain.EditingDomain;
	import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
	import org.eclipse.epf.library.edit.IFilter;
	import org.eclipse.epf.library.edit.ILibraryItemProvider;
	import org.eclipse.epf.library.edit.IStatefulItemProvider;
	import org.eclipse.epf.library.edit.PresentationContext;
	import org.eclipse.epf.library.edit.command.MethodElementAddCommand;
	import org.eclipse.epf.library.edit.util.TngUtil;
	import org.eclipse.epf.uma.ContentPackage;
	import org.eclipse.epf.uma.MethodElement;
	import org.eclipse.epf.uma.MethodPackage;
	import org.eclipse.epf.uma.UmaFactory;
	import org.eclipse.epf.uma.UmaPackage;

	/**
	* The item provider adapter for the "Content Packages" folder in the Library
	* view.
	* <p>
	* This class will be renamed as ContentPackagesItemProvider in EPF M5.
	*
	* @author Phong Nguyen Le
	* @author Kelvin Low
	* @since 1.0
	*/
	public class ContentPackageItemProvider extends
	org.eclipse.epf.uma.provider.ContentPackageItemProvider implements
	IElementItemProvider, ILibraryItemProvider, IStatefulItemProvider {

	protected RolesItemProvider roles;

	protected TasksItemProvider tasks;

	protected WorkProductsItemProvider workProducts;

	protected GuidancesItemProvider guidances;

	protected String label;

	protected Object parent;

	/**
	* Creates a new instance.
	*/
	public ContentPackageItemProvider(AdapterFactory adapterFactory) {
	super(adapterFactory);
	}

	/**
	* @return Returns the roles.
	*/
	public RolesItemProvider getRoles() {
	return roles;
	}

	/**
	* @return Returns the tasks.
	*/
	public TasksItemProvider getTasks() {
	return tasks;
	}

	/**
	* @return Returns the workProducts.
	*/
	public WorkProductsItemProvider getWorkProducts() {
	return workProducts;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getChildrenFeatures(java.lang.Object)
	*/
	// public Collection getChildrenFeatures(Object object) {
	// if (childrenFeatures == null) {
	// childrenFeatures = new ArrayList();
	// childrenFeatures.add(UmaPackage.eINSTANCE.getMethodPackage_ChildPackages());
	// }
	// return childrenFeatures;
	// }
	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getChildren(java.lang.Object)
	*/
	public Collection getChildren(Object object) {
	List allChildren = new ArrayList();
	ChildrenStore store = getChildrenStore(object);
	List result = null;
	if (store == null) {
	store = createChildrenStore(object);
	result = store != null ? null : new ArrayList();
	EObject eObject = (EObject) object;

	for (Iterator i = getChildrenFeatures(object).iterator(); i
	.hasNext();) {
	EStructuralFeature feature = (EStructuralFeature) i.next();
	if (feature.isMany()) {
	List children = (List) eObject.eGet(feature);
	List contentPkgs = new ArrayList();
	int index = 0;
	for (Iterator ci = children.iterator(); ci.hasNext(); index++) {
	Object child = ci.next();
	if (child instanceof ContentPackage) {
	child = wrap(eObject, feature, child, index);
	// if (store != null)
	// {
	// store.getList(feature).add(child);
	// }
	// else
	// {
	// result.add(child);
	// }
	contentPkgs.add(child);
	}
	}

	// clear parent for children
	//
	for (Iterator iter = children.iterator(); iter.hasNext();) {
	Object child = (Object) iter.next();
	Object adapter = adapterFactory.adapt(child,
	ITreeItemContentProvider.class);
	if (adapter instanceof ILibraryItemProvider) {
	((ILibraryItemProvider) adapter).setParent(null);
	}
	}

	// sorting the content packages
	//
	Collections.sort(contentPkgs, PresentationContext.INSTANCE
	.getComparator());

	if (store != null) {
	store.getList(feature).addAll(contentPkgs);
	} else {
	result.addAll(contentPkgs);
	}
	} else {
	Object child = eObject.eGet(feature);
	if (child instanceof ContentPackage) {
	child = wrap(eObject, feature, child,
	CommandParameter.NO_INDEX);
	if (store != null) {
	store.setValue(feature, child);
	} else {
	result.add(child);
	}
	}
	}
	}
	}
	allChildren.addAll(store != null ? store.getChildren() : result);
	ContentPackage contentPkg = (ContentPackage) object;

	// remove old adapters (roles, tasks, workproducts) from the the
	// contentPkg
	//
	// EObject eObj = (EObject) object;
	if (roles == null) {
	// eObj.eAdapters().remove(roles);
	roles = new RolesItemProvider(adapterFactory, contentPkg);
	}
	if (tasks == null) {
	// eObj.eAdapters().remove(tasks);
	tasks = new TasksItemProvider(adapterFactory, contentPkg);
	}
	if (workProducts == null) {
	// eObj.eAdapters().remove(workProducts);
	workProducts = new WorkProductsItemProvider(adapterFactory,
	contentPkg);
	}
	if (guidances == null) {
	// eObj.eAdapters().remove(guidances);
	guidances = new GuidancesItemProvider(adapterFactory, contentPkg);
	}

	allChildren.add(roles);
	allChildren.add(tasks);
	allChildren.add(workProducts);
	allChildren.add(guidances);
	return allChildren;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#collectNewChildDescriptors(java.util.Collection,
	* java.lang.Object)
	*/
	protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors,
	Object object) {
	newChildDescriptors.add(createChildParameter(UmaPackage.eINSTANCE
	.getMethodPackage_ChildPackages(), UmaFactory.eINSTANCE
	.createContentPackage()));
	}

	// /* (non-Javadoc)
	// * @see
	// org.eclipse.emf.edit.provider.ItemProviderAdapter#createCommand(java.lang.Object,
	// org.eclipse.emf.edit.domain.EditingDomain, java.lang.Class,
	// org.eclipse.emf.edit.command.CommandParameter)
	// */
	// public Command createCommand(Object object, EditingDomain domain,
	// Class commandClass, CommandParameter commandParameter) {
	// // commandParameter.setOwner(((EObject)object).eContainer());
	// Command cmd = super.createCommand(object, domain, commandClass,
	// commandParameter);
	// System.out.println(getClass().getName() + "#createCommand: " +
	// commandClass + ", can execute: " + cmd.canExecute() + ", owner: " +
	// commandParameter.getOwner() + ", collection: " +
	// commandParameter.getCollection());
	// return cmd;
	// }

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getText(java.lang.Object)
	*/
	public String getText(Object object) {
	String txt;
	if (label != null) {
	txt = label;
	} else {
	txt = TngUtil
	.getLabel(object, getString("_UI_ContentPackage_type")); //$NON-NLS-1$
	}
	// check if the object has its own resource and it is modified to add
	// the dirty flag
	//
	Resource res = ((EObject) object).eResource();
	if (res != null && res.getContents().get(0) == object
	&& res.isModified()) {
	txt = txt + "*"; //$NON-NLS-1$
	}
	return txt;
	}

	private void setDefaultName(Object obj) {
	ContentPackage contentPackage = (ContentPackage) target;
	if (obj instanceof ContentPackage) {
	TngUtil.setDefaultName(contentPackage.getChildPackages(),
	(MethodElement) obj, "content_package"); //$NON-NLS-1$
	} else {
	TngUtil.setDefaultName(contentPackage.getChildPackages(),
	(MethodElement) obj, "method_package"); //$NON-NLS-1$
	}
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.emf.common.notify.Adapter#notifyChanged(org.eclipse.emf.common.notify.Notification)
	*/
	public void notifyChanged(Notification msg) {
	TngUtil.refreshParentIfNameChanged(msg, this);

	switch (msg.getFeatureID(ContentPackage.class)) {
	case UmaPackage.CONTENT_PACKAGE__CONTENT_ELEMENTS:
	return;
	case UmaPackage.CONTENT_PACKAGE__CHILD_PACKAGES:
	switch (msg.getEventType()) {
	case Notification.ADD:
	setDefaultName(msg.getNewValue());
	break;
	case Notification.ADD_MANY:
	for (Iterator iter = ((Collection) msg.getNewValue())
	.iterator(); iter.hasNext();) {
	setDefaultName(iter.next());
	}
	break;
	}
	}

	super.notifyChanged(msg);
	}

	/**
	* @return
	*/
	public GuidancesItemProvider getGuidances() {
	return guidances;
	}

	/*
	* (non-Javadoc)
	*
	* @see com.ibm.library.edit.IConfigurable#setFilter(com.ibm.library.edit.IFilter)
	*/
	public void setFilter(IFilter filter) {
	}

	/*
	* (non-Javadoc)
	*
	* @see com.ibm.library.edit.IConfigurable#setLabel(java.lang.String)
	*/
	public void setLabel(String label) {
	this.label = label;
	}

	/*
	* (non-Javadoc)
	*
	* @see com.ibm.library.edit.IConfigurable#setParent(java.lang.Object)
	*/
	public void setParent(Object parent) {
	this.parent = parent;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getParent(java.lang.Object)
	*/
	public Object getParent(Object object) {
	if (parent != null)
	return parent;
	return super.getParent(object);
	}

	// public Object getImage(Object object) {
	// return TngEditPlugin.INSTANCE.getImage("full/obj16/MethodPackages");
	// }

	protected Command createAddCommand(EditingDomain domain, EObject owner,
	EStructuralFeature feature, Collection collection, int index) {
	ArrayList selection = new ArrayList();
	for (Iterator iter = collection.iterator(); iter.hasNext();) {
	Object element = iter.next();

	// make sure that you cannot add MethodPackage that is not a
	// ContentPackage
	//
	if (element instanceof MethodPackage
	&& !(element instanceof ContentPackage)) {
	continue;
	}

	selection.add(element);
	}

	return new MethodElementAddCommand((AddCommand) super.createAddCommand(
	domain, owner, feature, selection, index));
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#dispose()
	*/
	public void dispose() {
	if (guidances != null) {
	guidances.dispose();
	guidances = null;
	}
	if (roles != null) {
	roles.dispose();
	roles = null;
	}
	if (tasks != null) {
	tasks.dispose();
	tasks = null;
	}
	if (workProducts != null) {
	workProducts.dispose();
	workProducts = null;
	}
	super.dispose();
	}

	}