jsf/plugins/org.eclipse.jst.jsf.facesconfig.ui/src/org/eclipse/jst/jsf/facesconfig/ui/pageflow/synchronization/FC2PFTransformer.java - jsf/webtools.jsf - Git at Google

 /**
  * Confidential Property of Sybase, Inc.
  * (c) Copyright Sybase, Inc. 2004-2006.
  * All rights reserved.
  */
 package org.eclipse.jst.jsf.facesconfig.ui.pageflow.synchronization;

 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Vector;

 import org.eclipse.emf.common.notify.Adapter;
 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.common.notify.Notifier;
 import org.eclipse.jst.jsf.facesconfig.emf.FacesConfigType;
 import org.eclipse.jst.jsf.facesconfig.emf.FromOutcomeType;
 import org.eclipse.jst.jsf.facesconfig.emf.FromViewIdType;
 import org.eclipse.jst.jsf.facesconfig.emf.NavigationCaseType;
 import org.eclipse.jst.jsf.facesconfig.emf.NavigationRuleType;
 import org.eclipse.jst.jsf.facesconfig.emf.ToViewIdType;
 import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.PFLink;
 import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.PFPage;
 import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.Pageflow;
 import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.PageflowElement;
 import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.PageflowNode;
 import org.eclipse.jst.jsf.facesconfig.ui.pageflow.util.PageflowTransform;

 /**
  * Update and synchronize pageflow from faces config or vice-versa.
  *
  * @author hmeng
  *
  */

 public class FC2PFTransformer implements Adapter {
 	private boolean listenToNotify;

 	PF2FCSynchronizer pf2FCSynchronizer;

 	FC2PFSynchronizer fc2PFSynchronizer;

 	private boolean isInEvent;

 	private Map mapCases2Links = new HashMap();

 	private Map mapLinks2Cases = new HashMap();

 	public Map getMapCases2Links() {
 		return mapCases2Links;
 	}

 	public Map getMapLinks2Cases() {
 		return mapLinks2Cases;
 	}

 	public void facesConfigNotifyChanged(Notification notification) {
 		getFc2PFSynchronizer().notifyChanged(notification);
 	}

 	private static FC2PFTransformer _instance;

 	private Map mapPaths2FC = new HashMap();

 	private Map mapPaths2PF = new HashMap();

 	boolean newSource = false;

 	boolean newTarget = false;

 	boolean newAction = false;

 	boolean dirty = false;

 	private Pageflow pageflow;

 	FacesConfigType facesConfig;

 	public void setFacesConfig(FacesConfigType facesConfig) {
 		this.facesConfig = facesConfig;
 	}

 	public void setPageflow(Pageflow pageflow) {
 		this.pageflow = pageflow;
 	}

 	public void clearCaches() {
 		mapPaths2FC.clear();
 		mapPaths2PF.clear();
 		mapCases2Links.clear();
 		mapLinks2Cases.clear();
 	}

 	/**
 	 * The map from PFLink - Cases Use case.getContainer to get rule.
 	 */
 	private Map cases2LinksMap = new HashMap();

 	public static FC2PFTransformer getInstance() {
 		if (_instance == null) {
 			_instance = new FC2PFTransformer();
 		}
 		return _instance;
 	}

 	public void dispose() {
 		clearCaches();
 		getFc2PFSynchronizer().dispose();
 		getPf2FCSynchronizer().dispose();
 		_instance = null;
 	}

 	public void setListenToNotify(boolean listenToNotify) {
 		this.listenToNotify = listenToNotify;
 	}

 	public Notifier getTarget() {
 		return null;
 	}

 	public boolean isAdapterForType(Object type) {
 		return false;
 	}

 	public void notifyChanged(Notification notification) {
 		if (listenToNotify && !isInEvent) {
 			isInEvent = true;
 			if (notification.getNotifier() instanceof PageflowElement) {
 				pageflowNotifyChanged(notification);
 			} else {
 				facesConfigNotifyChanged(notification);
 				// PageflowLayoutManager.getInstance().layoutPageflow(pageflow);
 			}
 			isInEvent = false;
 		}
 	}

 	public void setTarget(Notifier newTarget) {

 	}

 	public void pageflowNotifyChanged(Notification notification) {
 		getPf2FCSynchronizer().notifyChanged(notification);
 	}

 	public PFPage findPage(String path, Pageflow pageflow) {
 		List nodes = pageflow.getNodes();
 		for (int i = 0; i < nodes.size(); i++) {
 			if (nodes.get(i) instanceof PFPage) {
 				if (path != null) {
 					RefElement element = new RefElement(((PFPage) nodes.get(i))
 							.getReferenceLink());
 					if (path.equals(((PFPage) nodes.get(i)).getPath())) {
 						return (PFPage) nodes.get(i);
 					}
 				}
 			}
 		}
 		return null;
 	}

 	public FromViewIdType getSource(NavigationCaseType caseType) {
 		if (caseType.eContainer() instanceof NavigationRuleType) {
 			NavigationRuleType rule = (NavigationRuleType) caseType
 					.eContainer();
 			return rule.getFromViewId();
 		}
 		return null;
 	}

 	public PageflowNode findCaseEnd(PFPage action, FromOutcomeType outcome,
 			Pageflow pageflow) {
 		// TODO: find a case end in pageflow model
 		List links = action.getOutlinks();
 		for (int i = 0; i < links.size(); i++) {
 			PFLink link = (PFLink) links.get(i);
 			String outcomeStr = "";
 			if (outcome != null) {
 				outcomeStr = outcome.getTextContent();
 			}
 			if (link.getOutcome().equals(outcomeStr)) {
 				return link.getTarget();
 			}
 		}
 		return null;
 	}

 	// public PFAction findCaseAction(PFPage page, String action, Pageflow
 	// pageflow) {
 	// // TODO: find an action in pageflow model
 	// // FromActionType action = caseFC.getFromAction();
 	// List links = page.getOutlinks();
 	// for (int i = 0; i < links.size(); i++) {
 	// PFLink link = (PFLink) links.get(i);
 	// if (link.getTarget() instanceof PFAction) {
 	// if (((PFAction) link.getTarget()).getName().equals(action)) {
 	// return (PFAction) link.getTarget();
 	// }
 	// }
 	// }
 	// return null;
 	// }

 	/**
 	 * Delete a pageflow rule.
 	 *
 	 * @param rulePF
 	 */
 	public void deletePageflowRule(NavigationRuleType rulePF) {
 		NavigationCaseType casePF;
 		for (Iterator iterCasesPF = rulePF.getNavigationCase().iterator(); iterCasesPF
 				.hasNext();) {
 			casePF = (NavigationCaseType) iterCasesPF.next();
 			deletePageflowCase(casePF);
 		}
 	}

 	/**
 	 * Delete a pageflow case, the float node should be removed also.
 	 *
 	 * @param rulePF
 	 */

 	public void deletePageflowCase(NavigationCaseType casePF) {
 		Object link = cases2LinksMap.get(casePF);
 		// if (link instanceof LinksBundle) {
 		// LinksBundle linkBundle = ((LinksBundle) link);
 		// if (!linkBundle.isPage2Page()) {
 		// removeLink(linkBundle.getFirst());
 		// PageflowNode sourcePage = linkBundle.getFirst().getSource();
 		// PageflowNode targetPage = linkBundle.getFirst().getTarget();
 		// // if it is float, remove it.
 		// removePageflowNode(sourcePage);
 		// removePageflowNode(targetPage);
 		// sourcePage.getPageflow().getLinks().remove(link);
 		// } else {
 		// removeLink(linkBundle.getFirst());
 		// removeLink(linkBundle.getSecond());
 		// PageflowNode action = linkBundle.getFirst().getTarget();
 		// if (action.getInlinks().size() == 0) {
 		// action.getPageflow().getLinks().remove(
 		// linkBundle.getSecond());
 		// }
 		// if (action.getOutlinks().size() == 0) {
 		// action.getPageflow().getLinks().remove(
 		// linkBundle.getFirst());
 		// }
 		// PageflowNode sourcePage = linkBundle.getFirst().getSource();
 		// PageflowNode targetPage = linkBundle.getSecond().getTarget();
 		// // if it is float, remove it.
 		// removePageflowNode(sourcePage);
 		// removePageflowNode(targetPage);
 		// removePageflowNode(action);
 		// }
 		// links2CasesMap.remove(linkBundle);
 		// }

 	}

 	// private boolean removePageflowNode(PageflowNode node) {
 	// if (node.getOutlinks().size() == 0 && node.getInlinks().size() == 0) {
 	// node.getPageflow().getNodes().remove(node);
 	// return true;
 	// }
 	// return false;
 	// }
 	//
 	// private void removeLink(PFLink link) {
 	// PageflowNode source = link.getSource();
 	// PageflowNode target = link.getTarget();
 	// source.getOutlinks().remove(link);
 	// target.getInlinks().remove(link);
 	// }
 	//
 	// /**
 	// * get the model creation factory of faces-config 1.0
 	// *
 	// * @return - the model creation factory of faces-config 1.0
 	// */
 	// private FacesConfigFactory getFacesConfigFactory() {
 	// return FacesConfigFactory.eINSTANCE;
 	// }

 	/**
 	 * check whether these two fromviewid is same or not.
 	 *
 	 * @param fromViewID1
 	 * @param fromViewID2
 	 * @return
 	 */
 	// private boolean hasSameFromViewID(FromViewIdType fromViewID1,
 	// FromViewIdType fromViewID2) {
 	// String viewID1 = null;
 	// if (fromViewID1 == null) {
 	// viewID1 = "*";
 	// } else {
 	// viewID1 = fromViewID1.getTextContent().trim();
 	// }
 	//
 	// String viewID2 = null;
 	// if (fromViewID2 == null) {
 	// viewID2 = "*";
 	// } else {
 	// viewID2 = fromViewID2.getTextContent().trim();
 	// }
 	//
 	// if (viewID1.equalsIgnoreCase(viewID2)) {
 	// return true;
 	// }
 	// return false;
 	// }
 	/**
 	 * get or create a navigation rule
 	 *
 	 * @param fromViewIdPath
 	 * @param navigationRulesInPageflow
 	 * @return
 	 */
 	// private NavigationRuleType getNavigationRule(String fromViewIdPath,
 	// List navigationRulesInPageflow) {
 	// // create or get a new navigation rule
 	// NavigationRuleType navigationRule = null;
 	//
 	// FacesConfigFactory factory = getFacesConfigFactory();
 	// // set the from-view-id
 	// FromViewIdType fromViewId = factory.createFromViewIdType();
 	// fromViewId.setTextContent(fromViewIdPath);
 	// // found the navigation rule with the same from-view-id
 	// boolean bFound = false;
 	// for (Iterator iter = navigationRulesInPageflow.iterator(); iter
 	// .hasNext()
 	// && !bFound;) {
 	// NavigationRuleType rule = (NavigationRuleType) iter.next();
 	// if (hasSameFromViewID(fromViewId, rule.getFromViewId())) {
 	// navigationRule = rule;
 	// bFound = true;
 	// }
 	// }
 	// // if not found, create a new one.
 	// if (!bFound) {
 	// // create a new navigation rule
 	// navigationRule = factory.createNavigationRuleType();
 	//
 	// // set the from-view-id
 	// FromViewIdType fromViewid = factory.createFromViewIdType();
 	// fromViewid.setTextContent(fromViewIdPath);
 	// navigationRule.setFromViewId(fromViewid);
 	//
 	// navigationRulesInPageflow.add(navigationRule);
 	// }
 	// return navigationRule;
 	// }
 	// private PFAction getOrCreateAction(NavigationCaseType caseFC, PFPage
 	// start,
 	// boolean oldRule) {
 	// PFAction pfAction = null;
 	// FromActionType action = caseFC.getFromAction();
 	// String actionPath = action.getTextContent();
 	// if (oldRule) {
 	// if (caseFC.getFromAction() != null) {
 	// // pfAction = (PFAction) mapPaths2PF.get(path);
 	// // try pageflow for valid action.
 	// if ((pfAction = findCaseAction(start, actionPath, pageflow)) == null) {
 	// System.out.println("Create a new action");
 	// pfAction = PageflowTransform.getInstance().createPFAction(
 	// action.getTextContent());
 	// newAction = true;
 	// Vector list = new Vector();
 	// list.add(action);
 	// mapPaths2PF.put(actionPath, pfAction);
 	// mapPaths2FC.put(actionPath, list);
 	// }
 	// }
 	// } else {
 	// System.out.println("new page, Create a new action");
 	// pfAction = PageflowTransform.getInstance().createPFAction(
 	// action.getTextContent());
 	// newAction = true;
 	// Vector list = new Vector();
 	// list.add(action);
 	// mapPaths2PF.put(actionPath, pfAction);
 	// mapPaths2FC.put(actionPath, list);
 	// }
 	// return pfAction;
 	// }
 	private PFPage getOrCreateStartPage(NavigationCaseType navCase) {// FromViewIdType
 		PFPage startPFNode = null;
 		String path = "*";
 		NavigationRuleType rule = (NavigationRuleType) navCase.eContainer();
 		FromViewIdType source = getSource(navCase);
 		if (source != null) {
 			// ((CompatibilityXMIResource) source.eContainer().eResource())
 			// .setFormat(CompatibilityXMIResource.FORMAT_EMF1);
 			// uriSource = source.eContainer().eResource().getURIFragment(
 			// source.eContainer());
 			path = source.getTextContent();
 		}
 		if (!mapPaths2PF.containsKey(path)) {
 			startPFNode = findPage(path, pageflow);

 			if (startPFNode == null) {
 				// not exist or is "*"
 				// System.out.println("Create new start page");
 				startPFNode = PageflowTransform.getInstance()
 						.createPFPage(path);
 				// PageflowTransform.getInstance().updatePageflowSourcePage(start,
 				// rule);
 				newSource = true;
 			}
 			// FIXME: not only one!
 			// start.setReferenceLink(uriSource);
 			// mapLinks2PF.put(uriSource, start);
 			// start = PageflowTransform.getInstance().createPFPage(path);
 			// start.setReferenceLink("");
 			// mapLinks2URI.put(uriSource, path);
 			Vector list = new Vector();
 			list.add(source);
 			mapPaths2PF.put(path, startPFNode);
 			mapPaths2FC.put(path, list);
 		} else {
 			startPFNode = (PFPage) mapPaths2PF.get(path);
 		}
 		RefElement element = new RefElement(startPFNode.getReferenceLink());
 		element.add(source);
 		startPFNode.setReferenceLink(element.resolveReferenceString());
 		startPFNode.getFCElements().add(source);
 		startPFNode.setInitPath(path);
 		PageflowTransform.getInstance().updatePageflowSourcePage(startPFNode,
 				rule);
 		return startPFNode;
 	}

 	private PFPage getOrCreateEndPage(NavigationCaseType navCase) {// ToViewIdType
 		// target) {
 		ToViewIdType target = navCase.getToViewId();
 		if (target != null) {
 			String path = target.getTextContent();
 			PFPage endFCNode;
 			if (!mapPaths2PF.containsKey(path)) {
 				endFCNode = findPage(path, pageflow);
 				if (endFCNode == null) {
 					endFCNode = PageflowTransform.getInstance().createPFPage(
 							path);
 					// PageflowTransform.getInstance().updatePageflowTargetPage(end,
 					// navCase);
 					// System.out.println("Create new end page");
 					newTarget = true;
 				}
 				// FIXME: not only one!
 				mapPaths2PF.put(path, endFCNode);
 				// mapLinks2URI.put(uriTarget, path);
 				Vector list = new Vector();
 				list.add(target);
 				mapPaths2FC.put(path, list);
 			} else {
 				endFCNode = (PFPage) mapPaths2PF.get(path);
 			}
 			RefElement element = new RefElement(endFCNode.getReferenceLink());
 			element.add(target);
 			endFCNode.setReferenceLink(element.resolveReferenceString());
 			endFCNode.getFCElements().add(target);
 			endFCNode.setInitPath(path);
 			PageflowTransform.getInstance().updatePageflowTargetPage(endFCNode,
 					navCase);
 			return endFCNode;
 		}
 		return null;
 	}

 	/**
 	 * Create pageflow model element from faces-config navigation case. A case
 	 * might be corresponding to: 1. Page-action-page. 2. Page-page. 3. *-page.
 	 * 4. ? page-action-action-page?
 	 */
 	public boolean createPFElements(Pageflow pageflow, NavigationCaseType caseFC) {
 		this.newSource = false;
 		this.newAction = false;
 		this.newTarget = false;
 		this.pageflow = pageflow;
 		ToViewIdType target = caseFC.getToViewId();
 		if (target == null) {
 			return false;
 		}

 		PFPage start = null, end = null;
 		// ------------------------------------start page ------------------
 		start = getOrCreateStartPage(caseFC);
 		String action = null;
 		// -------------------------------action--------------------------
 		if (caseFC.getFromAction() != null) {
 			action = caseFC.getFromAction().getTextContent();
 		}
 		// -------------------------------------from outcome ---------
 		String fromOutCome = null;
 		if (caseFC.getFromOutcome() != null) {
 			fromOutCome = caseFC.getFromOutcome().getTextContent();
 		}
 		// ---------------------------------------end page------------------
 		end = getOrCreateEndPage(caseFC);
 		// ----------------------link------------------------
 		// Is there a link in pageflow model?
 		PFLink link = null;
 		if ((link = findLink(start, end, action, fromOutCome, caseFC)) == null) {
 			link = PageflowTransform.getInstance().createPFLink(start, end,
 					action, fromOutCome);
 			dirty = true;
 		}
 		RefElement element = new RefElement(link.getReferenceLink());
 		element.add(caseFC);
 		link.setReferenceLink(element.resolveReferenceString());
 		link.getFCElements().add(caseFC);
 		mapCases2Links.put(caseFC, link);
 		mapLinks2Cases.put(link, caseFC);
 		dirty |= newTarget | newAction | newSource;
 		return dirty;
 	}

 	// private PFLink findUnusedLink(List secondLinks) {
 	// PFLink link = null;
 	// for (int i = 0; i < secondLinks.size(); i++) {
 	// CaseLink cLink = new CaseLink((PFLink) secondLinks.get(i));
 	// if (!mapLinks2Cases.containsKey(cLink)) {
 	// link = (PFLink) secondLinks.get(i);
 	// break;
 	// }
 	// }
 	// return link;
 	// }

 	// private PFLink createLink(PageflowNode start, PageflowNode target,
 	// String fromAction, String fromOutcome) {
 	// PFLink result = null;
 	// if (target instanceof PFPage) {
 	// if (start instanceof PFAction) {
 	// result = PageflowTransform.getInstance().createPFLink(start,
 	// target, fromOutcome);
 	// result.set
 	// } else if (start instanceof PFPage) {
 	// result = PageflowTransform.getInstance().createPFLink(start,
 	// target, fromOutcome);
 	// }
 	// }
 	// // Page -> action
 	// else {
 	// result = PageflowTransform.getInstance().createPFLink(
 	// start, target, fromOutcome);
 	// }
 	// }

 	// private PFLink findPage2PageLink(PFPage start, PFPage target,
 	// String fromOutCome) {
 	// List links = start.getOutlinks();
 	// for (int i = 0, n = links.size(); i < n; i++) {
 	// if ((((PFLink) links.get(i)).getOutcome() == null && fromOutCome == null)
 	// || (((PFLink) links.get(i)).getOutcome() != null
 	// && fromOutCome != null && ((PFLink) links.get(i))
 	// .getOutcome().equals(fromOutCome))) {
 	// if (target.getPath().equals(
 	// ((PFPage) ((PFLink) links.get(i)).getTarget())
 	// .getPath())) {
 	// return (PFLink) links.get(i);
 	// }
 	// }
 	// }
 	// return null;
 	// }

 	private PFLink findLink(PFPage start, PFPage end, String action,
 			String fromOutCome, NavigationCaseType caseFC) {
 		List links = start.getOutlinks();
 		for (int i = 0, n = links.size(); i < n; i++) {
 			PFLink link = (PFLink) links.get(i);
 			if (link.getReferenceLink() != null
 					&& link.getReferenceLink().length() > 0) {
 				String ref = link.getReferenceLink();
 				RefElement element = new RefElement(ref);
 				if (element.getRefLinks().get(0).equals(
 						RefElement.resolveURI(caseFC)))
 					// if (isSame(link.getOutcome(), fromOutCome)
 					// && isSame(action, link.getFromaction())) {
 					if (end.getPath() != null
 							&& end.getPath().equals(
 									((PFPage) link.getTarget()).getPath())
 							&& !mapLinks2Cases.containsKey(link)) {
 						return link;
 					}
 			}
 		}
 		return null;
 	}

 	private boolean isSame(String first, String second) {
 		return (first == null && second == null || first != null
 				&& second != null && first.equals(second));
 	}

 	// private PFLink findFirstLink(PFPage start, PFAction end) {
 	// List links = start.getOutlinks();
 	// for (int i = 0, n = links.size(); i < n; i++) {
 	// PFLink link = (PFLink) links.get(i);
 	// if (link.getSource() == start && link.getTarget() == end) {
 	// return link;
 	// }
 	// }
 	// return null;
 	// }

 	public FC2PFSynchronizer getFc2PFSynchronizer() {
 		if (fc2PFSynchronizer == null) {
 			fc2PFSynchronizer = new FC2PFSynchronizer(pageflow, facesConfig);
 		}
 		return fc2PFSynchronizer;
 	}

 	public PF2FCSynchronizer getPf2FCSynchronizer() {
 		if (pf2FCSynchronizer == null) {
 			pf2FCSynchronizer = new PF2FCSynchronizer(pageflow, facesConfig);
 		}
 		return pf2FCSynchronizer;
 	}
 }
	/**
	* Confidential Property of Sybase, Inc.
	* (c) Copyright Sybase, Inc. 2004-2006.
	* All rights reserved.
	*/
	package org.eclipse.jst.jsf.facesconfig.ui.pageflow.synchronization;

	import java.util.HashMap;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;
	import java.util.Vector;

	import org.eclipse.emf.common.notify.Adapter;
	import org.eclipse.emf.common.notify.Notification;
	import org.eclipse.emf.common.notify.Notifier;
	import org.eclipse.jst.jsf.facesconfig.emf.FacesConfigType;
	import org.eclipse.jst.jsf.facesconfig.emf.FromOutcomeType;
	import org.eclipse.jst.jsf.facesconfig.emf.FromViewIdType;
	import org.eclipse.jst.jsf.facesconfig.emf.NavigationCaseType;
	import org.eclipse.jst.jsf.facesconfig.emf.NavigationRuleType;
	import org.eclipse.jst.jsf.facesconfig.emf.ToViewIdType;
	import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.PFLink;
	import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.PFPage;
	import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.Pageflow;
	import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.PageflowElement;
	import org.eclipse.jst.jsf.facesconfig.ui.pageflow.model.PageflowNode;
	import org.eclipse.jst.jsf.facesconfig.ui.pageflow.util.PageflowTransform;

	/**
	* Update and synchronize pageflow from faces config or vice-versa.
	*
	* @author hmeng
	*
	*/

	public class FC2PFTransformer implements Adapter {
	private boolean listenToNotify;

	PF2FCSynchronizer pf2FCSynchronizer;

	FC2PFSynchronizer fc2PFSynchronizer;

	private boolean isInEvent;

	private Map mapCases2Links = new HashMap();

	private Map mapLinks2Cases = new HashMap();

	public Map getMapCases2Links() {
	return mapCases2Links;
	}

	public Map getMapLinks2Cases() {
	return mapLinks2Cases;
	}

	public void facesConfigNotifyChanged(Notification notification) {
	getFc2PFSynchronizer().notifyChanged(notification);
	}

	private static FC2PFTransformer _instance;

	private Map mapPaths2FC = new HashMap();

	private Map mapPaths2PF = new HashMap();

	boolean newSource = false;

	boolean newTarget = false;

	boolean newAction = false;

	boolean dirty = false;

	private Pageflow pageflow;

	FacesConfigType facesConfig;

	public void setFacesConfig(FacesConfigType facesConfig) {
	this.facesConfig = facesConfig;
	}

	public void setPageflow(Pageflow pageflow) {
	this.pageflow = pageflow;
	}

	public void clearCaches() {
	mapPaths2FC.clear();
	mapPaths2PF.clear();
	mapCases2Links.clear();
	mapLinks2Cases.clear();
	}

	/**
	* The map from PFLink - Cases Use case.getContainer to get rule.
	*/
	private Map cases2LinksMap = new HashMap();

	public static FC2PFTransformer getInstance() {
	if (_instance == null) {
	_instance = new FC2PFTransformer();
	}
	return _instance;
	}

	public void dispose() {
	clearCaches();
	getFc2PFSynchronizer().dispose();
	getPf2FCSynchronizer().dispose();
	_instance = null;
	}

	public void setListenToNotify(boolean listenToNotify) {
	this.listenToNotify = listenToNotify;
	}

	public Notifier getTarget() {
	return null;
	}

	public boolean isAdapterForType(Object type) {
	return false;
	}

	public void notifyChanged(Notification notification) {
	if (listenToNotify && !isInEvent) {
	isInEvent = true;
	if (notification.getNotifier() instanceof PageflowElement) {
	pageflowNotifyChanged(notification);
	} else {
	facesConfigNotifyChanged(notification);
	// PageflowLayoutManager.getInstance().layoutPageflow(pageflow);
	}
	isInEvent = false;
	}
	}

	public void setTarget(Notifier newTarget) {

	}

	public void pageflowNotifyChanged(Notification notification) {
	getPf2FCSynchronizer().notifyChanged(notification);
	}

	public PFPage findPage(String path, Pageflow pageflow) {
	List nodes = pageflow.getNodes();
	for (int i = 0; i < nodes.size(); i++) {
	if (nodes.get(i) instanceof PFPage) {
	if (path != null) {
	RefElement element = new RefElement(((PFPage) nodes.get(i))
	.getReferenceLink());
	if (path.equals(((PFPage) nodes.get(i)).getPath())) {
	return (PFPage) nodes.get(i);
	}
	}
	}
	}
	return null;
	}

	public FromViewIdType getSource(NavigationCaseType caseType) {
	if (caseType.eContainer() instanceof NavigationRuleType) {
	NavigationRuleType rule = (NavigationRuleType) caseType
	.eContainer();
	return rule.getFromViewId();
	}
	return null;
	}

	public PageflowNode findCaseEnd(PFPage action, FromOutcomeType outcome,
	Pageflow pageflow) {
	// TODO: find a case end in pageflow model
	List links = action.getOutlinks();
	for (int i = 0; i < links.size(); i++) {
	PFLink link = (PFLink) links.get(i);
	String outcomeStr = "";
	if (outcome != null) {
	outcomeStr = outcome.getTextContent();
	}
	if (link.getOutcome().equals(outcomeStr)) {
	return link.getTarget();
	}
	}
	return null;
	}

	// public PFAction findCaseAction(PFPage page, String action, Pageflow
	// pageflow) {
	// // TODO: find an action in pageflow model
	// // FromActionType action = caseFC.getFromAction();
	// List links = page.getOutlinks();
	// for (int i = 0; i < links.size(); i++) {
	// PFLink link = (PFLink) links.get(i);
	// if (link.getTarget() instanceof PFAction) {
	// if (((PFAction) link.getTarget()).getName().equals(action)) {
	// return (PFAction) link.getTarget();
	// }
	// }
	// }
	// return null;
	// }

	/**
	* Delete a pageflow rule.
	*
	* @param rulePF
	*/
	public void deletePageflowRule(NavigationRuleType rulePF) {
	NavigationCaseType casePF;
	for (Iterator iterCasesPF = rulePF.getNavigationCase().iterator(); iterCasesPF
	.hasNext();) {
	casePF = (NavigationCaseType) iterCasesPF.next();
	deletePageflowCase(casePF);
	}
	}

	/**
	* Delete a pageflow case, the float node should be removed also.
	*
	* @param rulePF
	*/

	public void deletePageflowCase(NavigationCaseType casePF) {
	Object link = cases2LinksMap.get(casePF);
	// if (link instanceof LinksBundle) {
	// LinksBundle linkBundle = ((LinksBundle) link);
	// if (!linkBundle.isPage2Page()) {
	// removeLink(linkBundle.getFirst());
	// PageflowNode sourcePage = linkBundle.getFirst().getSource();
	// PageflowNode targetPage = linkBundle.getFirst().getTarget();
	// // if it is float, remove it.
	// removePageflowNode(sourcePage);
	// removePageflowNode(targetPage);
	// sourcePage.getPageflow().getLinks().remove(link);
	// } else {
	// removeLink(linkBundle.getFirst());
	// removeLink(linkBundle.getSecond());
	// PageflowNode action = linkBundle.getFirst().getTarget();
	// if (action.getInlinks().size() == 0) {
	// action.getPageflow().getLinks().remove(
	// linkBundle.getSecond());
	// }
	// if (action.getOutlinks().size() == 0) {
	// action.getPageflow().getLinks().remove(
	// linkBundle.getFirst());
	// }
	// PageflowNode sourcePage = linkBundle.getFirst().getSource();
	// PageflowNode targetPage = linkBundle.getSecond().getTarget();
	// // if it is float, remove it.
	// removePageflowNode(sourcePage);
	// removePageflowNode(targetPage);
	// removePageflowNode(action);
	// }
	// links2CasesMap.remove(linkBundle);
	// }

	}

	// private boolean removePageflowNode(PageflowNode node) {
	// if (node.getOutlinks().size() == 0 && node.getInlinks().size() == 0) {
	// node.getPageflow().getNodes().remove(node);
	// return true;
	// }
	// return false;
	// }
	//
	// private void removeLink(PFLink link) {
	// PageflowNode source = link.getSource();
	// PageflowNode target = link.getTarget();
	// source.getOutlinks().remove(link);
	// target.getInlinks().remove(link);
	// }
	//
	// /**
	// * get the model creation factory of faces-config 1.0
	// *
	// * @return - the model creation factory of faces-config 1.0
	// */
	// private FacesConfigFactory getFacesConfigFactory() {
	// return FacesConfigFactory.eINSTANCE;
	// }

	/**
	* check whether these two fromviewid is same or not.
	*
	* @param fromViewID1
	* @param fromViewID2
	* @return
	*/
	// private boolean hasSameFromViewID(FromViewIdType fromViewID1,
	// FromViewIdType fromViewID2) {
	// String viewID1 = null;
	// if (fromViewID1 == null) {
	// viewID1 = "*";
	// } else {
	// viewID1 = fromViewID1.getTextContent().trim();
	// }
	//
	// String viewID2 = null;
	// if (fromViewID2 == null) {
	// viewID2 = "*";
	// } else {
	// viewID2 = fromViewID2.getTextContent().trim();
	// }
	//
	// if (viewID1.equalsIgnoreCase(viewID2)) {
	// return true;
	// }
	// return false;
	// }
	/**
	* get or create a navigation rule
	*
	* @param fromViewIdPath
	* @param navigationRulesInPageflow
	* @return
	*/
	// private NavigationRuleType getNavigationRule(String fromViewIdPath,
	// List navigationRulesInPageflow) {
	// // create or get a new navigation rule
	// NavigationRuleType navigationRule = null;
	//
	// FacesConfigFactory factory = getFacesConfigFactory();
	// // set the from-view-id
	// FromViewIdType fromViewId = factory.createFromViewIdType();
	// fromViewId.setTextContent(fromViewIdPath);
	// // found the navigation rule with the same from-view-id
	// boolean bFound = false;
	// for (Iterator iter = navigationRulesInPageflow.iterator(); iter
	// .hasNext()
	// && !bFound;) {
	// NavigationRuleType rule = (NavigationRuleType) iter.next();
	// if (hasSameFromViewID(fromViewId, rule.getFromViewId())) {
	// navigationRule = rule;
	// bFound = true;
	// }
	// }
	// // if not found, create a new one.
	// if (!bFound) {
	// // create a new navigation rule
	// navigationRule = factory.createNavigationRuleType();
	//
	// // set the from-view-id
	// FromViewIdType fromViewid = factory.createFromViewIdType();
	// fromViewid.setTextContent(fromViewIdPath);
	// navigationRule.setFromViewId(fromViewid);
	//
	// navigationRulesInPageflow.add(navigationRule);
	// }
	// return navigationRule;
	// }
	// private PFAction getOrCreateAction(NavigationCaseType caseFC, PFPage
	// start,
	// boolean oldRule) {
	// PFAction pfAction = null;
	// FromActionType action = caseFC.getFromAction();
	// String actionPath = action.getTextContent();
	// if (oldRule) {
	// if (caseFC.getFromAction() != null) {
	// // pfAction = (PFAction) mapPaths2PF.get(path);
	// // try pageflow for valid action.
	// if ((pfAction = findCaseAction(start, actionPath, pageflow)) == null) {
	// System.out.println("Create a new action");
	// pfAction = PageflowTransform.getInstance().createPFAction(
	// action.getTextContent());
	// newAction = true;
	// Vector list = new Vector();
	// list.add(action);
	// mapPaths2PF.put(actionPath, pfAction);
	// mapPaths2FC.put(actionPath, list);
	// }
	// }
	// } else {
	// System.out.println("new page, Create a new action");
	// pfAction = PageflowTransform.getInstance().createPFAction(
	// action.getTextContent());
	// newAction = true;
	// Vector list = new Vector();
	// list.add(action);
	// mapPaths2PF.put(actionPath, pfAction);
	// mapPaths2FC.put(actionPath, list);
	// }
	// return pfAction;
	// }
	private PFPage getOrCreateStartPage(NavigationCaseType navCase) {// FromViewIdType
	PFPage startPFNode = null;
	String path = "*";
	NavigationRuleType rule = (NavigationRuleType) navCase.eContainer();
	FromViewIdType source = getSource(navCase);
	if (source != null) {
	// ((CompatibilityXMIResource) source.eContainer().eResource())
	// .setFormat(CompatibilityXMIResource.FORMAT_EMF1);
	// uriSource = source.eContainer().eResource().getURIFragment(
	// source.eContainer());
	path = source.getTextContent();
	}
	if (!mapPaths2PF.containsKey(path)) {
	startPFNode = findPage(path, pageflow);

	if (startPFNode == null) {
	// not exist or is "*"
	// System.out.println("Create new start page");
	startPFNode = PageflowTransform.getInstance()
	.createPFPage(path);
	// PageflowTransform.getInstance().updatePageflowSourcePage(start,
	// rule);
	newSource = true;
	}
	// FIXME: not only one!
	// start.setReferenceLink(uriSource);
	// mapLinks2PF.put(uriSource, start);
	// start = PageflowTransform.getInstance().createPFPage(path);
	// start.setReferenceLink("");
	// mapLinks2URI.put(uriSource, path);
	Vector list = new Vector();
	list.add(source);
	mapPaths2PF.put(path, startPFNode);
	mapPaths2FC.put(path, list);
	} else {
	startPFNode = (PFPage) mapPaths2PF.get(path);
	}
	RefElement element = new RefElement(startPFNode.getReferenceLink());
	element.add(source);
	startPFNode.setReferenceLink(element.resolveReferenceString());
	startPFNode.getFCElements().add(source);
	startPFNode.setInitPath(path);
	PageflowTransform.getInstance().updatePageflowSourcePage(startPFNode,
	rule);
	return startPFNode;
	}

	private PFPage getOrCreateEndPage(NavigationCaseType navCase) {// ToViewIdType
	// target) {
	ToViewIdType target = navCase.getToViewId();
	if (target != null) {
	String path = target.getTextContent();
	PFPage endFCNode;
	if (!mapPaths2PF.containsKey(path)) {
	endFCNode = findPage(path, pageflow);
	if (endFCNode == null) {
	endFCNode = PageflowTransform.getInstance().createPFPage(
	path);
	// PageflowTransform.getInstance().updatePageflowTargetPage(end,
	// navCase);
	// System.out.println("Create new end page");
	newTarget = true;
	}
	// FIXME: not only one!
	mapPaths2PF.put(path, endFCNode);
	// mapLinks2URI.put(uriTarget, path);
	Vector list = new Vector();
	list.add(target);
	mapPaths2FC.put(path, list);
	} else {
	endFCNode = (PFPage) mapPaths2PF.get(path);
	}
	RefElement element = new RefElement(endFCNode.getReferenceLink());
	element.add(target);
	endFCNode.setReferenceLink(element.resolveReferenceString());
	endFCNode.getFCElements().add(target);
	endFCNode.setInitPath(path);
	PageflowTransform.getInstance().updatePageflowTargetPage(endFCNode,
	navCase);
	return endFCNode;
	}
	return null;
	}

	/**
	* Create pageflow model element from faces-config navigation case. A case
	* might be corresponding to: 1. Page-action-page. 2. Page-page. 3. *-page.
	* 4. ? page-action-action-page?
	*/
	public boolean createPFElements(Pageflow pageflow, NavigationCaseType caseFC) {
	this.newSource = false;
	this.newAction = false;
	this.newTarget = false;
	this.pageflow = pageflow;
	ToViewIdType target = caseFC.getToViewId();
	if (target == null) {
	return false;
	}

	PFPage start = null, end = null;
	// ------------------------------------start page ------------------
	start = getOrCreateStartPage(caseFC);
	String action = null;
	// -------------------------------action--------------------------
	if (caseFC.getFromAction() != null) {
	action = caseFC.getFromAction().getTextContent();
	}
	// -------------------------------------from outcome ---------
	String fromOutCome = null;
	if (caseFC.getFromOutcome() != null) {
	fromOutCome = caseFC.getFromOutcome().getTextContent();
	}
	// ---------------------------------------end page------------------
	end = getOrCreateEndPage(caseFC);
	// ----------------------link------------------------
	// Is there a link in pageflow model?
	PFLink link = null;
	if ((link = findLink(start, end, action, fromOutCome, caseFC)) == null) {
	link = PageflowTransform.getInstance().createPFLink(start, end,
	action, fromOutCome);
	dirty = true;
	}
	RefElement element = new RefElement(link.getReferenceLink());
	element.add(caseFC);
	link.setReferenceLink(element.resolveReferenceString());
	link.getFCElements().add(caseFC);
	mapCases2Links.put(caseFC, link);
	mapLinks2Cases.put(link, caseFC);
	dirty \|= newTarget \| newAction \| newSource;
	return dirty;
	}

	// private PFLink findUnusedLink(List secondLinks) {
	// PFLink link = null;
	// for (int i = 0; i < secondLinks.size(); i++) {
	// CaseLink cLink = new CaseLink((PFLink) secondLinks.get(i));
	// if (!mapLinks2Cases.containsKey(cLink)) {
	// link = (PFLink) secondLinks.get(i);
	// break;
	// }
	// }
	// return link;
	// }

	// private PFLink createLink(PageflowNode start, PageflowNode target,
	// String fromAction, String fromOutcome) {
	// PFLink result = null;
	// if (target instanceof PFPage) {
	// if (start instanceof PFAction) {
	// result = PageflowTransform.getInstance().createPFLink(start,
	// target, fromOutcome);
	// result.set
	// } else if (start instanceof PFPage) {
	// result = PageflowTransform.getInstance().createPFLink(start,
	// target, fromOutcome);
	// }
	// }
	// // Page -> action
	// else {
	// result = PageflowTransform.getInstance().createPFLink(
	// start, target, fromOutcome);
	// }
	// }

	// private PFLink findPage2PageLink(PFPage start, PFPage target,
	// String fromOutCome) {
	// List links = start.getOutlinks();
	// for (int i = 0, n = links.size(); i < n; i++) {
	// if ((((PFLink) links.get(i)).getOutcome() == null && fromOutCome == null)
	// \|\| (((PFLink) links.get(i)).getOutcome() != null
	// && fromOutCome != null && ((PFLink) links.get(i))
	// .getOutcome().equals(fromOutCome))) {
	// if (target.getPath().equals(
	// ((PFPage) ((PFLink) links.get(i)).getTarget())
	// .getPath())) {
	// return (PFLink) links.get(i);
	// }
	// }
	// }
	// return null;
	// }

	private PFLink findLink(PFPage start, PFPage end, String action,
	String fromOutCome, NavigationCaseType caseFC) {
	List links = start.getOutlinks();
	for (int i = 0, n = links.size(); i < n; i++) {
	PFLink link = (PFLink) links.get(i);
	if (link.getReferenceLink() != null
	&& link.getReferenceLink().length() > 0) {
	String ref = link.getReferenceLink();
	RefElement element = new RefElement(ref);
	if (element.getRefLinks().get(0).equals(
	RefElement.resolveURI(caseFC)))
	// if (isSame(link.getOutcome(), fromOutCome)
	// && isSame(action, link.getFromaction())) {
	if (end.getPath() != null
	&& end.getPath().equals(
	((PFPage) link.getTarget()).getPath())
	&& !mapLinks2Cases.containsKey(link)) {
	return link;
	}
	}
	}
	return null;
	}

	private boolean isSame(String first, String second) {
	return (first == null && second == null \|\| first != null
	&& second != null && first.equals(second));
	}

	// private PFLink findFirstLink(PFPage start, PFAction end) {
	// List links = start.getOutlinks();
	// for (int i = 0, n = links.size(); i < n; i++) {
	// PFLink link = (PFLink) links.get(i);
	// if (link.getSource() == start && link.getTarget() == end) {
	// return link;
	// }
	// }
	// return null;
	// }

	public FC2PFSynchronizer getFc2PFSynchronizer() {
	if (fc2PFSynchronizer == null) {
	fc2PFSynchronizer = new FC2PFSynchronizer(pageflow, facesConfig);
	}
	return fc2PFSynchronizer;
	}

	public PF2FCSynchronizer getPf2FCSynchronizer() {
	if (pf2FCSynchronizer == null) {
	pf2FCSynchronizer = new PF2FCSynchronizer(pageflow, facesConfig);
	}
	return pf2FCSynchronizer;
	}
	}