1.5/plugins/org.eclipse.epf.library.edit/src/org/eclipse/epf/library/edit/process/WorkProductDescriptorItemProvider.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.process;

 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.common.util.EList;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.emf.edit.command.CommandParameter;
 import org.eclipse.emf.edit.command.RemoveCommand;
 import org.eclipse.emf.edit.command.CopyCommand.Helper;
 import org.eclipse.emf.edit.domain.EditingDomain;
 import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
 import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
 import org.eclipse.emf.edit.provider.ItemProviderAdapter;
 import org.eclipse.emf.edit.provider.ViewerNotification;
 import org.eclipse.epf.library.edit.ICachedChildrenItemProvider;
 import org.eclipse.epf.library.edit.IConfigurator;
 import org.eclipse.epf.library.edit.IFilter;
 import org.eclipse.epf.library.edit.command.IActionManager;
 import org.eclipse.epf.library.edit.process.command.WorkProductDescriptorCreateCopyCommand;
 import org.eclipse.epf.library.edit.process.consolidated.ActivityItemProvider;
 import org.eclipse.epf.library.edit.util.Comparators;
 import org.eclipse.epf.library.edit.util.LibraryEditUtil;
 import org.eclipse.epf.library.edit.util.ProcessUtil;
 import org.eclipse.epf.library.edit.util.TngUtil;
 import org.eclipse.epf.uma.Activity;
 import org.eclipse.epf.uma.Artifact;
 import org.eclipse.epf.uma.BreakdownElement;
 import org.eclipse.epf.uma.Deliverable;
 import org.eclipse.epf.uma.MethodConfiguration;
 import org.eclipse.epf.uma.UmaPackage;
 import org.eclipse.epf.uma.WorkProduct;
 import org.eclipse.epf.uma.WorkProductDescriptor;
 import org.eclipse.epf.uma.util.UmaUtil;


 /**
  * @author Phong Nguyen Le
  * @since 1.0
  */
 public class WorkProductDescriptorItemProvider extends DescriptorItemProvider
 implements ICachedChildrenItemProvider
 {
 	protected Collection cachedChildren;

 	/**
 	 * @param adapterFactory
 	 */
 	public WorkProductDescriptorItemProvider(AdapterFactory adapterFactory,
 			ItemProviderAdapter delegateItemProvider) {
 		super(adapterFactory, delegateItemProvider);
 	}

 	public Activity getActivity(Object object) {
 		for (Object parent = getParent(object); parent != null;) {
 			if (parent instanceof Activity)
 				return (Activity) parent;
 			AdapterFactory aFactory = getRootAdapterFactory();
 			ItemProviderAdapter adapter = (ItemProviderAdapter) aFactory.adapt(
 					parent, ITreeItemContentProvider.class);
 			parent = adapter.getParent(parent);
 		}
 		return null;
 	}

 	private Object getDescriptor(Activity activity, Artifact artifact) {
 		if (activity == null)
 			return null;
 		List list = activity.getBreakdownElements();
 		int size = list.size();
 		for (int i = 0; i < size; i++) {
 			Object obj = list.get(i);
 			if ((obj instanceof WorkProductDescriptor)
 					&& (artifact == ((WorkProductDescriptor) obj)
 							.getWorkProduct())) {
 				return obj;
 			}
 		}
 		return null;
 	}

 	/*
 	 * (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.getWorkProductDescriptor_DeliverableParts());
 		// }
 		// return childrenFeatures;

 		return Collections.EMPTY_LIST;
 	}

 	private void updateCachedChildren(Collection children) {
 //		if(cachedChildren == null) {
 //			cachedChildren = new ArrayList(children);
 //		}
 //		else {
 //			cachedChildren.clear();
 //			cachedChildren.addAll(children);
 //		}
 	}

 	protected void addContainedArtifactDescriptors(WorkProductDescriptor wpDesc, Collection children, MethodConfiguration config) {
 		Activity activity = UmaUtil.getParentActivity(wpDesc);
 		if(activity != null) {
 			Artifact artifact = (Artifact) wpDesc.getWorkProduct();
 			List list = config == null ? null : LibraryEditUtil.getInstance().calc0nFeatureValue(artifact, UmaPackage.eINSTANCE.getArtifact_ContainedArtifacts(), config);
 			if (list == null) {
 				list = artifact.getContainedArtifacts();
 			}
 			int size = list.size();
 			if(size > 0) {
 				ArrayList artifactDescriptors = new ArrayList();
 				for (int i = 0; i < size; i++) {
 					Object descriptor = getDescriptor(activity, (Artifact) list
 							.get(i));
 					if (descriptor != null) {
 						artifactDescriptors.add(descriptor);
 					}
 				}
 				if(!artifactDescriptors.isEmpty()) {
 					Collections.sort(artifactDescriptors, Comparators.PRESENTATION_NAME_COMPARATOR);
 					children.addAll(artifactDescriptors);
 				}
 			}
 		}
 	}

 	private IFilter getFilter(Object obj) {
 		IFilter filter = null;
 		Object parent = getParent(obj);
 		IBSItemProvider adapter = (IBSItemProvider) getRootAdapterFactory()
 				.adapt(parent, ITreeItemContentProvider.class);
 		if (adapter instanceof ActivityItemProvider) {
 			filter = ((ActivityItemProvider) adapter).getFilter();
 		}

 		return filter;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getChildren(java.lang.Object)
 	 */
 	public Collection getChildren(Object object) {
 		WorkProductDescriptor wpDesc = (WorkProductDescriptor) object;

 		// don't show the children of the non-deliverable work product descriptor
 		// that is deliverable part of a deliverable work product descriptor
 		//
 		if(!(wpDesc.getWorkProduct() instanceof Deliverable)) {
 			Object parent = TngUtil.unwrap(getParent(object));
 			if(parent instanceof WorkProductDescriptor
 					&& ((WorkProductDescriptor)parent).getWorkProduct() instanceof Deliverable) {
 				updateCachedChildren(Collections.EMPTY_LIST);
 				return Collections.EMPTY_LIST;
 			}
 		}

 		Collection children = super.getChildren(object);

 		// add deliverable parts
 		//
 		if(!wpDesc.getDeliverableParts().isEmpty()) {
 			for (Iterator iter = wpDesc.getDeliverableParts().iterator(); iter
 			.hasNext();) {
 				WorkProductDescriptor desc = (WorkProductDescriptor) iter.next();
 				if (desc.getSuperActivities() == null || ProcessUtil.isSynFree()) {
 					children.add(desc);
 				}
 			}
 		}

 		IFilter filter = getFilter(object);
 		MethodConfiguration config = null;
 		if (filter == null) {
 			filter = ProcessUtil.getFilter(adapterFactory);
 		}
 		if (filter instanceof IConfigurator) {
 			config = ((IConfigurator) filter).getMethodConfiguration();
 		}
 		// get descriptors of contained artifacts
 		//
 		if (wpDesc.getWorkProduct() instanceof Artifact) {
 			addContainedArtifactDescriptors(wpDesc, children, config);
 		}

 		// set parent
 		//
 		AdapterFactory aFactory = getRootAdapterFactory();

 		for (Iterator iter = children.iterator(); iter.hasNext();) {
 			IBSItemProvider adapter = (IBSItemProvider) aFactory.adapt(iter
 					.next(), ITreeItemContentProvider.class);
 			adapter.setParent(object);
 		}

 		updateCachedChildren(children);

 		return children;
 	}

 	/**
 	 * Gets children from cache, fill the children cache if it is not initialized yet
 	 *
 	 * @return
 	 */
 	public Collection getChildrenFromCache() {
 		if(cachedChildren == null) {
 			getChildren(target);
 		}
 		return cachedChildren;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.epf.library.edit.ICachedChildrenItemProvider#getRollupChildrenFromCache()
 	 */
 	public Collection getRollupChildrenFromCache() {
 		return Collections.EMPTY_LIST;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.epf.library.edit.process.BreakdownElementItemProvider#dispose()
 	 */
 	public void dispose() {
 		if(cachedChildren != null) {
 			cachedChildren.clear();
 			cachedChildren = null;
 		}

 		super.dispose();
 	}

 	public void notifyChanged(Notification notification) {
 		switch (notification.getFeatureID(WorkProductDescriptor.class)) {
 //		case UmaPackage.WORK_PRODUCT_DESCRIPTOR__MANDATORY_INPUT_TO:
 //		case UmaPackage.WORK_PRODUCT_DESCRIPTOR__OPTIONAL_INPUT_TO:
 //		case UmaPackage.WORK_PRODUCT_DESCRIPTOR__EXTERNAL_INPUT_TO:
 //		case UmaPackage.WORK_PRODUCT_DESCRIPTOR__OUTPUT_FROM:
 		case UmaPackage.WORK_PRODUCT_DESCRIPTOR__ACTIVITY_ENTRY_STATE:
 		case UmaPackage.WORK_PRODUCT_DESCRIPTOR__ACTIVITY_EXIT_STATE:
 			fireNotifyChanged(new ViewerNotification(notification, notification
 					.getNotifier(), false, true));
 			return;
 		case UmaPackage.WORK_PRODUCT_DESCRIPTOR__DELIVERABLE_PARTS:
 			List elements = ProcessUtil.getAffectedElements(notification, null);
 			int eventType = notification.getEventType();
 			boolean refresh = false;
 			for (Iterator iter = elements.iterator(); iter.hasNext();) {
 				BreakdownElement e = (BreakdownElement) iter.next();
 				if (eventType == Notification.ADD
 						|| eventType == Notification.ADD_MANY) {
 					ProcessUtil.addToContainer(e, this, false);
 				}
 				if (e.getSuperActivities() != null) {
 					fireNotifyChanged(new ViewerNotification(notification, e,
 							false, true));
 				} else {
 					refresh = true;
 				}
 			}

 			if (refresh) {
 				fireNotifyChanged(new ViewerNotification(notification,
 						notification.getNotifier(), true, false));
 			}

 			return;
 		case UmaPackage.DESCRIBABLE_ELEMENT__PRESENTATION_NAME:
 			WorkProductDescriptor wpd = (WorkProductDescriptor) notification
 					.getNotifier();
 			fireNotifyChanged(new ViewerNotification(notification, wpd, false,
 					true));
 			if (wpd.getWorkProduct() instanceof Deliverable) {
 				for (Iterator iter = wpd.getDeliverableParts().iterator(); iter
 						.hasNext();) {
 					Object descriptor = iter.next();
 					fireNotifyChanged(new ViewerNotification(notification,
 							descriptor, false, true));
 				}
 			}
 			return;
 		case UmaPackage.WORK_PRODUCT_DESCRIPTOR__SUPPRESSED:
 			Object notifier = notification.getNotifier();
 			WorkProduct wp;
 			boolean contentRefresh = notifier instanceof WorkProductDescriptor
 				&& ((wp = ((WorkProductDescriptor)notifier).getWorkProduct()) instanceof Artifact
 						|| wp instanceof Deliverable);
 			fireNotifyChanged(new ViewerNotification(notification, notification
 					.getNotifier(), contentRefresh, true));
 			return;
 		}

 		super.notifyChanged(notification);
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see com.ibm.library.edit.process.IBSItemProvider#setAttribute(java.lang.Object,
 	 *      java.lang.String, java.lang.String)
 	 */
 	public void setAttribute(Object object, String prop, String txt) {
 		WorkProductDescriptor wpd = (WorkProductDescriptor) object;

 		if (prop == IBSItemProvider.COL_ENTRY_STATE) {
 			wpd.setActivityEntryState(txt);
 		} else if (prop == IBSItemProvider.COL_EXIT_STATE) {
 			wpd.setActivityExitState(txt);
 		} else {
 			super.setAttribute(object, prop, txt);
 		}
 	}

 	// private boolean isTopLevelArtifactInActivity(Activity activity, Object
 	// obj)
 	// {
 	// AdapterFactory aFactory = TngUtil.getBestAdapterFactory(adapterFactory);
 	//
 	// BSActivityItemProvider adapter = (BSActivityItemProvider)
 	// aFactory.adapt(activity, ITreeItemContentProvider.class);
 	// Collection children = adapter.getChildren(activity);
 	// if (children.contains(obj))
 	// {
 	// //System.out.println("child - " + obj);
 	// return true;
 	// }
 	// return false;
 	// }

 	public Collection getEClasses() {
 		return ProcessUtil.getPBSEclasses();
 	}

 	public void moveUp(Object obj, IActionManager actionMgr) {
 		Object parent = this.getParent(obj);
 		if ((parent != null) && (parent instanceof Activity)) {
 			TngUtil.moveUp((Activity) parent, obj, getEClasses(), actionMgr);
 		}
 		if ((parent != null) && (parent instanceof WorkProductDescriptor)) {
 			WorkProduct wp = ((WorkProductDescriptor) parent).getWorkProduct();
 			if (wp instanceof Artifact) {
 				Artifact artifact = (Artifact) wp;
 				List list = artifact.getContainedArtifacts();
 				WorkProduct objWP = ((WorkProductDescriptor) obj)
 						.getWorkProduct();

 				int location = 0;
 				// List newList = new ArrayList();
 				for (int i = 0; i < list.size(); i++) {
 					if (objWP.equals(list.get(i))) {
 						location = i;
 						break;
 					}
 				}

 				((EList) artifact.getContainedArtifacts()).move(location,
 						location - 1);
 			}

 			Activity activity = this.getActivity(obj);
 			TngUtil.moveUp(activity, obj, getEClasses(), actionMgr);
 		}
 	}

 	public void moveDown(Object obj, IActionManager actionMgr) {
 		Object parent = this.getParent(obj);
 		if ((parent != null) && (parent instanceof Activity)) {
 			TngUtil.moveDown((Activity) parent, obj, getEClasses(), actionMgr);
 		}
 		if ((parent != null) && (parent instanceof WorkProductDescriptor)) {
 			WorkProduct wp = ((WorkProductDescriptor) parent).getWorkProduct();
 			if (wp instanceof Artifact) {
 				Artifact artifact = (Artifact) wp;
 				List list = artifact.getContainedArtifacts();
 				WorkProduct objWP = ((WorkProductDescriptor) obj)
 						.getWorkProduct();

 				int location = 0;
 				// List newList = new ArrayList();
 				for (int i = 0; i < list.size(); i++) {
 					if (objWP.equals(list.get(i))) {
 						location = i;
 						break;
 					}
 				}

 				((EList) artifact.getContainedArtifacts()).move(location,
 						location + 1);
 			}

 			Activity activity = this.getActivity(obj);
 			TngUtil.moveDown(activity, obj, getEClasses(), actionMgr);
 		}
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see com.ibm.library.edit.process.BreakdownElementItemProvider#createCreateCopyCommand(org.eclipse.emf.edit.domain.EditingDomain,
 	 *      org.eclipse.emf.ecore.EObject,
 	 *      org.eclipse.emf.edit.command.CopyCommand.Helper)
 	 */
 	protected Command createCreateCopyCommand(EditingDomain domain,
 			EObject owner, Helper helper) {
 		return new WorkProductDescriptorCreateCopyCommand(domain, owner, helper);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.emf.edit.provider.ItemProviderAdapter#factorRemoveCommand(org.eclipse.emf.edit.domain.EditingDomain, org.eclipse.emf.edit.command.CommandParameter)
 	 */
 	protected Command factorRemoveCommand(EditingDomain domain, CommandParameter commandParameter) {
 		if(!(commandParameter.getOwner() instanceof Activity)) {
 			Activity act = getActivity(target);
 			if(act != null) {
 				IEditingDomainItemProvider adapter = (IEditingDomainItemProvider) adapterFactory.adapt(act, IEditingDomainItemProvider.class);
 				commandParameter.setOwner(act);
 				return adapter.createCommand(act, domain, RemoveCommand.class, commandParameter);
 			}
 		}
 		return super.factorRemoveCommand(domain, commandParameter);
 	}

 	public String getAttribute(Object object, String property) {
 		// EPF bug#: 144820 Some nested work product descriptors show wrong model info in work product usage view
 		// for defect, override the method, previously DescriptorItemProvide.getAttribute use to have this code, moved to here.
 		if (property == IBSItemProvider.COL_MODEL_INFO) {
 			StringBuffer modelInfo = new StringBuffer();
 				if (object instanceof WorkProductDescriptor) {
 //					ProcessUtil.getModelInfoForWorkProductDescriptor(modelInfo,
 //							(WorkProductDescriptor) object);
 					ProcessUtil.getWPDModelInfo(modelInfo, object, this);
 				}
 //			}
 			return modelInfo.toString();
 		}
 		return super.getAttribute(object, property);
 	}

 	 protected boolean hasChildren(Object object, boolean optimized)
 	  {
 		boolean b =  super.hasChildren(object, optimized);
 		return b;
 	  }


 }
	//------------------------------------------------------------------------------
	// 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.process;

	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.common.util.EList;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.emf.edit.command.CommandParameter;
	import org.eclipse.emf.edit.command.RemoveCommand;
	import org.eclipse.emf.edit.command.CopyCommand.Helper;
	import org.eclipse.emf.edit.domain.EditingDomain;
	import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
	import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
	import org.eclipse.emf.edit.provider.ItemProviderAdapter;
	import org.eclipse.emf.edit.provider.ViewerNotification;
	import org.eclipse.epf.library.edit.ICachedChildrenItemProvider;
	import org.eclipse.epf.library.edit.IConfigurator;
	import org.eclipse.epf.library.edit.IFilter;
	import org.eclipse.epf.library.edit.command.IActionManager;
	import org.eclipse.epf.library.edit.process.command.WorkProductDescriptorCreateCopyCommand;
	import org.eclipse.epf.library.edit.process.consolidated.ActivityItemProvider;
	import org.eclipse.epf.library.edit.util.Comparators;
	import org.eclipse.epf.library.edit.util.LibraryEditUtil;
	import org.eclipse.epf.library.edit.util.ProcessUtil;
	import org.eclipse.epf.library.edit.util.TngUtil;
	import org.eclipse.epf.uma.Activity;
	import org.eclipse.epf.uma.Artifact;
	import org.eclipse.epf.uma.BreakdownElement;
	import org.eclipse.epf.uma.Deliverable;
	import org.eclipse.epf.uma.MethodConfiguration;
	import org.eclipse.epf.uma.UmaPackage;
	import org.eclipse.epf.uma.WorkProduct;
	import org.eclipse.epf.uma.WorkProductDescriptor;
	import org.eclipse.epf.uma.util.UmaUtil;


	/**
	* @author Phong Nguyen Le
	* @since 1.0
	*/
	public class WorkProductDescriptorItemProvider extends DescriptorItemProvider
	implements ICachedChildrenItemProvider
	{
	protected Collection cachedChildren;

	/**
	* @param adapterFactory
	*/
	public WorkProductDescriptorItemProvider(AdapterFactory adapterFactory,
	ItemProviderAdapter delegateItemProvider) {
	super(adapterFactory, delegateItemProvider);
	}

	public Activity getActivity(Object object) {
	for (Object parent = getParent(object); parent != null;) {
	if (parent instanceof Activity)
	return (Activity) parent;
	AdapterFactory aFactory = getRootAdapterFactory();
	ItemProviderAdapter adapter = (ItemProviderAdapter) aFactory.adapt(
	parent, ITreeItemContentProvider.class);
	parent = adapter.getParent(parent);
	}
	return null;
	}

	private Object getDescriptor(Activity activity, Artifact artifact) {
	if (activity == null)
	return null;
	List list = activity.getBreakdownElements();
	int size = list.size();
	for (int i = 0; i < size; i++) {
	Object obj = list.get(i);
	if ((obj instanceof WorkProductDescriptor)
	&& (artifact == ((WorkProductDescriptor) obj)
	.getWorkProduct())) {
	return obj;
	}
	}
	return null;
	}

	/*
	* (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.getWorkProductDescriptor_DeliverableParts());
	// }
	// return childrenFeatures;

	return Collections.EMPTY_LIST;
	}

	private void updateCachedChildren(Collection children) {
	// if(cachedChildren == null) {
	// cachedChildren = new ArrayList(children);
	// }
	// else {
	// cachedChildren.clear();
	// cachedChildren.addAll(children);
	// }
	}

	protected void addContainedArtifactDescriptors(WorkProductDescriptor wpDesc, Collection children, MethodConfiguration config) {
	Activity activity = UmaUtil.getParentActivity(wpDesc);
	if(activity != null) {
	Artifact artifact = (Artifact) wpDesc.getWorkProduct();
	List list = config == null ? null : LibraryEditUtil.getInstance().calc0nFeatureValue(artifact, UmaPackage.eINSTANCE.getArtifact_ContainedArtifacts(), config);
	if (list == null) {
	list = artifact.getContainedArtifacts();
	}
	int size = list.size();
	if(size > 0) {
	ArrayList artifactDescriptors = new ArrayList();
	for (int i = 0; i < size; i++) {
	Object descriptor = getDescriptor(activity, (Artifact) list
	.get(i));
	if (descriptor != null) {
	artifactDescriptors.add(descriptor);
	}
	}
	if(!artifactDescriptors.isEmpty()) {
	Collections.sort(artifactDescriptors, Comparators.PRESENTATION_NAME_COMPARATOR);
	children.addAll(artifactDescriptors);
	}
	}
	}
	}

	private IFilter getFilter(Object obj) {
	IFilter filter = null;
	Object parent = getParent(obj);
	IBSItemProvider adapter = (IBSItemProvider) getRootAdapterFactory()
	.adapt(parent, ITreeItemContentProvider.class);
	if (adapter instanceof ActivityItemProvider) {
	filter = ((ActivityItemProvider) adapter).getFilter();
	}

	return filter;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getChildren(java.lang.Object)
	*/
	public Collection getChildren(Object object) {
	WorkProductDescriptor wpDesc = (WorkProductDescriptor) object;

	// don't show the children of the non-deliverable work product descriptor
	// that is deliverable part of a deliverable work product descriptor
	//
	if(!(wpDesc.getWorkProduct() instanceof Deliverable)) {
	Object parent = TngUtil.unwrap(getParent(object));
	if(parent instanceof WorkProductDescriptor
	&& ((WorkProductDescriptor)parent).getWorkProduct() instanceof Deliverable) {
	updateCachedChildren(Collections.EMPTY_LIST);
	return Collections.EMPTY_LIST;
	}
	}

	Collection children = super.getChildren(object);

	// add deliverable parts
	//
	if(!wpDesc.getDeliverableParts().isEmpty()) {
	for (Iterator iter = wpDesc.getDeliverableParts().iterator(); iter
	.hasNext();) {
	WorkProductDescriptor desc = (WorkProductDescriptor) iter.next();
	if (desc.getSuperActivities() == null \|\| ProcessUtil.isSynFree()) {
	children.add(desc);
	}
	}
	}

	IFilter filter = getFilter(object);
	MethodConfiguration config = null;
	if (filter == null) {
	filter = ProcessUtil.getFilter(adapterFactory);
	}
	if (filter instanceof IConfigurator) {
	config = ((IConfigurator) filter).getMethodConfiguration();
	}
	// get descriptors of contained artifacts
	//
	if (wpDesc.getWorkProduct() instanceof Artifact) {
	addContainedArtifactDescriptors(wpDesc, children, config);
	}

	// set parent
	//
	AdapterFactory aFactory = getRootAdapterFactory();

	for (Iterator iter = children.iterator(); iter.hasNext();) {
	IBSItemProvider adapter = (IBSItemProvider) aFactory.adapt(iter
	.next(), ITreeItemContentProvider.class);
	adapter.setParent(object);
	}

	updateCachedChildren(children);

	return children;
	}

	/**
	* Gets children from cache, fill the children cache if it is not initialized yet
	*
	* @return
	*/
	public Collection getChildrenFromCache() {
	if(cachedChildren == null) {
	getChildren(target);
	}
	return cachedChildren;
	}

	/* (non-Javadoc)
	* @see org.eclipse.epf.library.edit.ICachedChildrenItemProvider#getRollupChildrenFromCache()
	*/
	public Collection getRollupChildrenFromCache() {
	return Collections.EMPTY_LIST;
	}

	/* (non-Javadoc)
	* @see org.eclipse.epf.library.edit.process.BreakdownElementItemProvider#dispose()
	*/
	public void dispose() {
	if(cachedChildren != null) {
	cachedChildren.clear();
	cachedChildren = null;
	}

	super.dispose();
	}

	public void notifyChanged(Notification notification) {
	switch (notification.getFeatureID(WorkProductDescriptor.class)) {
	// case UmaPackage.WORK_PRODUCT_DESCRIPTOR__MANDATORY_INPUT_TO:
	// case UmaPackage.WORK_PRODUCT_DESCRIPTOR__OPTIONAL_INPUT_TO:
	// case UmaPackage.WORK_PRODUCT_DESCRIPTOR__EXTERNAL_INPUT_TO:
	// case UmaPackage.WORK_PRODUCT_DESCRIPTOR__OUTPUT_FROM:
	case UmaPackage.WORK_PRODUCT_DESCRIPTOR__ACTIVITY_ENTRY_STATE:
	case UmaPackage.WORK_PRODUCT_DESCRIPTOR__ACTIVITY_EXIT_STATE:
	fireNotifyChanged(new ViewerNotification(notification, notification
	.getNotifier(), false, true));
	return;
	case UmaPackage.WORK_PRODUCT_DESCRIPTOR__DELIVERABLE_PARTS:
	List elements = ProcessUtil.getAffectedElements(notification, null);
	int eventType = notification.getEventType();
	boolean refresh = false;
	for (Iterator iter = elements.iterator(); iter.hasNext();) {
	BreakdownElement e = (BreakdownElement) iter.next();
	if (eventType == Notification.ADD
	\|\| eventType == Notification.ADD_MANY) {
	ProcessUtil.addToContainer(e, this, false);
	}
	if (e.getSuperActivities() != null) {
	fireNotifyChanged(new ViewerNotification(notification, e,
	false, true));
	} else {
	refresh = true;
	}
	}

	if (refresh) {
	fireNotifyChanged(new ViewerNotification(notification,
	notification.getNotifier(), true, false));
	}

	return;
	case UmaPackage.DESCRIBABLE_ELEMENT__PRESENTATION_NAME:
	WorkProductDescriptor wpd = (WorkProductDescriptor) notification
	.getNotifier();
	fireNotifyChanged(new ViewerNotification(notification, wpd, false,
	true));
	if (wpd.getWorkProduct() instanceof Deliverable) {
	for (Iterator iter = wpd.getDeliverableParts().iterator(); iter
	.hasNext();) {
	Object descriptor = iter.next();
	fireNotifyChanged(new ViewerNotification(notification,
	descriptor, false, true));
	}
	}
	return;
	case UmaPackage.WORK_PRODUCT_DESCRIPTOR__SUPPRESSED:
	Object notifier = notification.getNotifier();
	WorkProduct wp;
	boolean contentRefresh = notifier instanceof WorkProductDescriptor
	&& ((wp = ((WorkProductDescriptor)notifier).getWorkProduct()) instanceof Artifact
	\|\| wp instanceof Deliverable);
	fireNotifyChanged(new ViewerNotification(notification, notification
	.getNotifier(), contentRefresh, true));
	return;
	}

	super.notifyChanged(notification);
	}

	/*
	* (non-Javadoc)
	*
	* @see com.ibm.library.edit.process.IBSItemProvider#setAttribute(java.lang.Object,
	* java.lang.String, java.lang.String)
	*/
	public void setAttribute(Object object, String prop, String txt) {
	WorkProductDescriptor wpd = (WorkProductDescriptor) object;

	if (prop == IBSItemProvider.COL_ENTRY_STATE) {
	wpd.setActivityEntryState(txt);
	} else if (prop == IBSItemProvider.COL_EXIT_STATE) {
	wpd.setActivityExitState(txt);
	} else {
	super.setAttribute(object, prop, txt);
	}
	}

	// private boolean isTopLevelArtifactInActivity(Activity activity, Object
	// obj)
	// {
	// AdapterFactory aFactory = TngUtil.getBestAdapterFactory(adapterFactory);
	//
	// BSActivityItemProvider adapter = (BSActivityItemProvider)
	// aFactory.adapt(activity, ITreeItemContentProvider.class);
	// Collection children = adapter.getChildren(activity);
	// if (children.contains(obj))
	// {
	// //System.out.println("child - " + obj);
	// return true;
	// }
	// return false;
	// }

	public Collection getEClasses() {
	return ProcessUtil.getPBSEclasses();
	}

	public void moveUp(Object obj, IActionManager actionMgr) {
	Object parent = this.getParent(obj);
	if ((parent != null) && (parent instanceof Activity)) {
	TngUtil.moveUp((Activity) parent, obj, getEClasses(), actionMgr);
	}
	if ((parent != null) && (parent instanceof WorkProductDescriptor)) {
	WorkProduct wp = ((WorkProductDescriptor) parent).getWorkProduct();
	if (wp instanceof Artifact) {
	Artifact artifact = (Artifact) wp;
	List list = artifact.getContainedArtifacts();
	WorkProduct objWP = ((WorkProductDescriptor) obj)
	.getWorkProduct();

	int location = 0;
	// List newList = new ArrayList();
	for (int i = 0; i < list.size(); i++) {
	if (objWP.equals(list.get(i))) {
	location = i;
	break;
	}
	}

	((EList) artifact.getContainedArtifacts()).move(location,
	location - 1);
	}

	Activity activity = this.getActivity(obj);
	TngUtil.moveUp(activity, obj, getEClasses(), actionMgr);
	}
	}

	public void moveDown(Object obj, IActionManager actionMgr) {
	Object parent = this.getParent(obj);
	if ((parent != null) && (parent instanceof Activity)) {
	TngUtil.moveDown((Activity) parent, obj, getEClasses(), actionMgr);
	}
	if ((parent != null) && (parent instanceof WorkProductDescriptor)) {
	WorkProduct wp = ((WorkProductDescriptor) parent).getWorkProduct();
	if (wp instanceof Artifact) {
	Artifact artifact = (Artifact) wp;
	List list = artifact.getContainedArtifacts();
	WorkProduct objWP = ((WorkProductDescriptor) obj)
	.getWorkProduct();

	int location = 0;
	// List newList = new ArrayList();
	for (int i = 0; i < list.size(); i++) {
	if (objWP.equals(list.get(i))) {
	location = i;
	break;
	}
	}

	((EList) artifact.getContainedArtifacts()).move(location,
	location + 1);
	}

	Activity activity = this.getActivity(obj);
	TngUtil.moveDown(activity, obj, getEClasses(), actionMgr);
	}
	}

	/*
	* (non-Javadoc)
	*
	* @see com.ibm.library.edit.process.BreakdownElementItemProvider#createCreateCopyCommand(org.eclipse.emf.edit.domain.EditingDomain,
	* org.eclipse.emf.ecore.EObject,
	* org.eclipse.emf.edit.command.CopyCommand.Helper)
	*/
	protected Command createCreateCopyCommand(EditingDomain domain,
	EObject owner, Helper helper) {
	return new WorkProductDescriptorCreateCopyCommand(domain, owner, helper);
	}

	/* (non-Javadoc)
	* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#factorRemoveCommand(org.eclipse.emf.edit.domain.EditingDomain, org.eclipse.emf.edit.command.CommandParameter)
	*/
	protected Command factorRemoveCommand(EditingDomain domain, CommandParameter commandParameter) {
	if(!(commandParameter.getOwner() instanceof Activity)) {
	Activity act = getActivity(target);
	if(act != null) {
	IEditingDomainItemProvider adapter = (IEditingDomainItemProvider) adapterFactory.adapt(act, IEditingDomainItemProvider.class);
	commandParameter.setOwner(act);
	return adapter.createCommand(act, domain, RemoveCommand.class, commandParameter);
	}
	}
	return super.factorRemoveCommand(domain, commandParameter);
	}

	public String getAttribute(Object object, String property) {
	// EPF bug#: 144820 Some nested work product descriptors show wrong model info in work product usage view
	// for defect, override the method, previously DescriptorItemProvide.getAttribute use to have this code, moved to here.
	if (property == IBSItemProvider.COL_MODEL_INFO) {
	StringBuffer modelInfo = new StringBuffer();
	if (object instanceof WorkProductDescriptor) {
	// ProcessUtil.getModelInfoForWorkProductDescriptor(modelInfo,
	// (WorkProductDescriptor) object);
	ProcessUtil.getWPDModelInfo(modelInfo, object, this);
	}
	// }
	return modelInfo.toString();
	}
	return super.getAttribute(object, property);
	}

	protected boolean hasChildren(Object object, boolean optimized)
	{
	boolean b = super.hasChildren(object, optimized);
	return b;
	}


	}