plugins/org.eclipse.bpel.ui/src/org/eclipse/bpel/ui/preferences/WSILPreferencePage.java - bpel/org.eclipse.bpel - Git at Google

 /*******************************************************************************
  * Copyright (c) 2005, 2012 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 API and implementation
  *******************************************************************************/
 package org.eclipse.bpel.ui.preferences;


 import java.io.File;
 import java.io.IOException;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;

 import org.eclipse.bpel.model.resource.BPELResourceSetImpl;
 import org.eclipse.bpel.ui.BPELUIPlugin;
 import org.eclipse.bpel.ui.IBPELUIConstants;
 import org.eclipse.bpel.ui.IHelpContextIds;
 import org.eclipse.bpel.ui.Messages;
 import org.eclipse.bpel.ui.details.providers.ColumnTableProvider;
 import org.eclipse.bpel.ui.details.providers.WSILContentProvider;
 import org.eclipse.bpel.ui.util.BPELUtil;
 import org.eclipse.bpel.ui.util.NamespaceUtils;
 import org.eclipse.bpel.ui.util.TableCursor;
 import org.eclipse.bpel.wsil.model.inspection.Inspection;
 import org.eclipse.bpel.wsil.model.inspection.InspectionFactory;
 import org.eclipse.bpel.wsil.model.inspection.InspectionPackage;
 import org.eclipse.bpel.wsil.model.inspection.Link;
 import org.eclipse.bpel.wsil.model.inspection.TypeOfAbstract;
 import org.eclipse.bpel.wsil.model.inspection.WSILDocument;
 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.common.util.EList;
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.util.EContentAdapter;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.viewers.CellEditor;
 import org.eclipse.jface.viewers.ICellModifier;
 import org.eclipse.jface.viewers.ILabelProvider;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.TextCellEditor;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerFilter;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.FocusEvent;
 import org.eclipse.swt.events.FocusListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.PlatformUI;


 /**
  *
  * @author Michal Chmielewski (michal.chmielewski@oracle.com)
  * @date May 2, 2007
  *
  */


 @SuppressWarnings({"nls","boxing","unchecked"})

 public class WSILPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

 	BPELResourceSetImpl resourceSet = new BPELResourceSetImpl();

 	Text wsilURL;

 	Table linkTable;
 	ColumnTableProvider tableProvider;

 	TableViewer linkTableViewer;

 	TableCursor tableCursor;

 	Link fLinkSelection;

 	WSILDocument fWsilDocument;

 	Button addButton;
 	Button removeButton;
 	Button moveUpButton;
 	Button moveDownButton;
 	Button openInBrowserButton;

 	private static String WSIL = "wsil";

 	// Track the  modification of any element in the WSIL model.
 	// we don't use commands and stacks here.
 	EContentAdapter fContentAdapter = new EContentAdapter() {

 		/**
 		 * @see org.eclipse.emf.ecore.util.EContentAdapter#notifyChanged(org.eclipse.emf.common.notify.Notification)
 		 */

 		@Override
 		public void notifyChanged(Notification arg0) {

 			super.notifyChanged(arg0);
 			int eventId = arg0.getEventType();
 			if (eventId == Notification.ADD ||  eventId == Notification.SET ||
 				eventId == Notification.MOVE || eventId == Notification.REMOVE ) {

 				linkTableViewer.refresh();
 				updateButtons();
 			}
 		}
 	};


 	@Override
 	protected Control createContents (Composite parent) {

 		Composite result = new Composite(parent, SWT.NONE);

 		GridLayout layout = new GridLayout( );
 		layout.numColumns = 3;
 		layout.verticalSpacing = 15;
 		layout.makeColumnsEqualWidth = false;

 		result.setLayout(layout);
 		GridData data = new GridData(GridData.FILL_BOTH);
 		// result.setLayoutData(data);

 		// WSIL directory
 		Label wsilLabel = new Label(result, SWT.NONE);
 		wsilLabel.setText(Messages.BPELPreferencePage_WSIL_1);
 		wsilLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING));

 		wsilURL = new Text(result, SWT.BORDER);
 		wsilURL.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		wsilURL.addFocusListener( new FocusListener () {


 			public void focusGained(FocusEvent e) {
 				wsilURL.setData("lastValue",wsilURL.getText());
 			}

 			public void focusLost(FocusEvent e) {
 				String url = wsilURL.getText();

 				// no change.
 				if (url.equals(wsilURL.getData("lastValue"))) {
 					return ;
 				}
 				attemptLoad( url );
 			}

 		});

 		Button browse = new Button(result, SWT.NONE);
 		browse.setText(Messages.BPELPreferencePage_WSIL_2);
 		data = new GridData(SWT.RIGHT);
 		data.widthHint = 100;

 		browse.setLayoutData(data);
 		browse.addSelectionListener(new SelectionAdapter() {

 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				FileDialog fd = new FileDialog(getShell(), SWT.OPEN);
 				fd.setFilterExtensions(new String[]{"*."+WSIL});
 				String fileName = fd.open();
 				if ((fileName != null) && (fileName.length() > 0)) {
 					// parse to file url
 					File file = new File(fileName);
 					String uri = file.toURI().toString();
 					wsilURL.setText( uri );
 					attemptLoad(uri);

 				}
 			}
 		}
 		);


 		// 2nd row of the 3 cell grid

 		Label txt = new Label ( result, SWT.NO_BACKGROUND | SWT.WRAP );

 		txt.setText( Messages.BPELPreferencePage_WSIL_Description );
 		data = new GridData( GridData.GRAB_HORIZONTAL );
 		data.horizontalSpan = 3;
 		txt.setLayoutData(data);

 		//
 		//

 		// create table
 		linkTable = new Table(result, SWT.FULL_SELECTION | SWT.V_SCROLL	| SWT.BORDER  );

 		data = new GridData(GridData.FILL_BOTH);
 		data.horizontalSpan = 2;

 		linkTable.setLayoutData(data);

 		// set up table
 		linkTable.setLinesVisible(true);
 		linkTable.setHeaderVisible(true);

 		tableProvider = new ColumnTableProvider();
 		tableProvider.add(new IndexColumn());
 		tableProvider.add(new AbstractColumn());
 		tableProvider.add(new LocationColumn());
 		// tableProvider.add(new NamespaceColumn());

 		linkTableViewer = new TableViewer(linkTable);
 		tableProvider.createTableLayout(linkTable);
 		linkTableViewer.setLabelProvider(tableProvider);
 		linkTableViewer.setCellModifier(tableProvider);

 		WSILContentProvider wsilContentProvider = new WSILContentProvider();
 		wsilContentProvider.setMode( WSILContentProvider.FLATTEN );

 		linkTableViewer.setContentProvider( wsilContentProvider );

 		linkTableViewer.addFilter(new ViewerFilter() {
 			@Override
 			public boolean select(Viewer viewer, Object parentElement, Object element) {
 				return element instanceof Link;
 			}
 		});

 		linkTableViewer.setColumnProperties(tableProvider.getColumnProperties());
 		linkTableViewer.setCellEditors(tableProvider.createCellEditors(linkTable));


 		tableCursor = BPELUtil.createTableCursor(linkTable, linkTableViewer);

 		///


 		layout = new GridLayout();
 		layout.numColumns = 1;
 		layout.verticalSpacing = 5;

 		Composite buttonList = new Composite ( result , SWT.NONE );
 		buttonList.setLayout(layout);

 		data = new GridData( GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_CENTER );
 		buttonList.setLayoutData( data );

 		addButton = new Button(buttonList, SWT.NONE);
 		addButton.setText(Messages.BPELPreferencePage_WSIL_Add);
 		data = new GridData(  GridData.FILL_HORIZONTAL );

 		addButton.setLayoutData(data);
 		addButton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {

 				Link link = InspectionFactory.eINSTANCE.createLink();

 				link.setLocation(Messages.BPELPreferencePage_WSIL_EnterLocation);
 				link.setReferencedNamespace( InspectionPackage.eNS_URI );

 				TypeOfAbstract toa = InspectionFactory.eINSTANCE.createTypeOfAbstract();
 				toa.setValue(Messages.BPELPreferencePage_WSIL_EnterDescription);
 				link.getAbstract().add( toa );

 				// modify the document
 				EList links = fWsilDocument.getInspection().getLinks();
 				links.add ( link );

 				// notifications of modifications are sent back to us via the EContentAdapter
 				// on the WSIL Document resource.
 			}
 		});


 		removeButton = new Button(buttonList, SWT.NONE);
 		removeButton.setText(Messages.BPELPreferencePage_WSIL_Remove);
 		data = new GridData( GridData.FILL_HORIZONTAL );

 		removeButton.setLayoutData(data);

 		removeButton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				 if (fLinkSelection == null) {
 					 return ;
 				 }
 				 // modify the document
 				 EList links = fWsilDocument.getInspection().getLinks();
 				 links.remove(fLinkSelection);
 			}
 		});


 		moveUpButton = new Button(buttonList, SWT.NONE);
 		moveUpButton.setText(Messages.BPELPreferencePage_WSIL_MoveUp);
 		data = new GridData( GridData.FILL_HORIZONTAL );

 		moveUpButton.setLayoutData(data);

 		moveUpButton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				 if (fLinkSelection == null) {
 					 return ;
 				 }
 				 // modify the document
 				 EList links = fWsilDocument.getInspection().getLinks();
 				 int idx = links.indexOf(fLinkSelection);
 				 if (idx < 0) {
 					 return ;
 				 }
 				 links.move(idx,idx-1);
 			}
 		});


 		moveDownButton = new Button(buttonList, SWT.NONE);
 		moveDownButton.setText(Messages.BPELPreferencePage_WSIL_MoveDown);
 		data = new GridData( GridData.FILL_HORIZONTAL );

 		moveDownButton.setLayoutData(data);

 		moveDownButton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				 if (fLinkSelection == null) {
 					 return ;
 				}
 				 // modify the document
 				 EList links = fWsilDocument.getInspection().getLinks();
 				 int idx = links.indexOf(fLinkSelection);
 				 if (idx < 0) {
 					 return ;
 				 }
 				 links.move(idx, idx+1);
 			}
 		});

 		openInBrowserButton = new Button(buttonList, SWT.NONE);
 		openInBrowserButton.setText(Messages.BPELPreferencePage_WSIL_OpenInBrowser);
 		data = new GridData( GridData.FILL_HORIZONTAL );

 		openInBrowserButton.setLayoutData(data);

 		openInBrowserButton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				 if (fLinkSelection == null) {
 					 return ;
 				 }

 				 // TODO:
 			}
 		});


 		linkTableViewer.addPostSelectionChangedListener( new ISelectionChangedListener () {


 			public void selectionChanged (SelectionChangedEvent event) {
 				ISelection selection = event.getSelection();
 				if (selection instanceof IStructuredSelection) {
 					IStructuredSelection ss = (IStructuredSelection) selection;
 					Object obj = ss.getFirstElement();
 					fLinkSelection = obj instanceof Link ? (Link) obj : null;
 				}
 				updateButtons();
 			}

 		});

 		updateButtons();

 		initializeValues();

 		PlatformUI.getWorkbench().getHelpSystem().setHelp(
 			parent, IHelpContextIds.PREFERENCES_PAGE);

 		return result;
 	}


 	/**
 	 * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
 	 */
 	public void init(IWorkbench workbench) {

 	}

 	@Override
 	protected void performDefaults() {
 		super.performDefaults();
 		initializeDefaults();
 	}

 	/**
 	 * @see org.eclipse.jface.preference.PreferencePage#performOk()
 	 */
 	@Override
 	public boolean performOk() {
 		storeValues();
 		return true;
 	}

 	@Override
 	protected void performApply() {
 		performOk();
 	}

 	/**
 	 * Initializes states of the controls using default values in the preference store.
 	 */
 	private void initializeDefaults() {

 	}

 	/**
 	 * Initializes states of the controls from the preference store.
 	 */
 	private void initializeValues() {
 		IPreferenceStore store = BPELUIPlugin.INSTANCE.getPreferenceStore();

 		wsilURL.setText(store.getString(IBPELUIConstants.PREF_WSIL_URL));

 		attemptLoad (wsilURL.getText() );
 	}


 	/**
 	 * Stores the values of the controls back to the preference store.
 	 */
 	private void storeValues() {
 		IPreferenceStore store = BPELUIPlugin.INSTANCE.getPreferenceStore();

 		store.setValue(IBPELUIConstants.PREF_WSIL_URL, wsilURL.getText());

 		if (fWsilDocument != null) {

 			Resource resource = fWsilDocument.eResource();

 			try {
 				resource.save(null);
 			} catch (IOException e) {
 				BPELUIPlugin.log(e);
 			}
 		}
 	}


 	void updateButtons ( ) {

 		List linkList = (fWsilDocument == null ? Collections.EMPTY_LIST : fWsilDocument.getInspection().getLinks());

 		int idx = linkList.indexOf(fLinkSelection);
 		// -1 if not found ...
 		moveUpButton.setEnabled(idx > 0);
 		moveDownButton.setEnabled(idx >= 0 && idx < linkList.size() - 1);
 		removeButton.setEnabled( fLinkSelection != null );
 		addButton.setEnabled(fWsilDocument!=null);
 		openInBrowserButton.setEnabled( fLinkSelection != null );
 	}


 	/**
 	 * @see org.eclipse.jface.dialogs.DialogPage#dispose()
 	 */
 	@Override
 	public void dispose() {

 		Iterator it = resourceSet.getResources().iterator();
 		while (it.hasNext()) {
 			Resource r = (Resource) it.next();
 			r.eAdapters().clear();
 		}
 		// TODO Auto-generated method stub
 		super.dispose();
 	}


 	void attemptLoad ( String url ) {

 		url = url.trim();

 		if (url.length() < 1) {
 			return ;
 		}
 		if(!url.endsWith(WSIL)){
 			setMessage(Messages.BPELPreferencePage_WSIL_NameLimit, ERROR);
 			return;
 		}

 		if (fWsilDocument != null) {
 			fWsilDocument.eResource().eAdapters().remove( fContentAdapter );
 			fWsilDocument = null;
 		}

 		org.eclipse.emf.common.util.URI uri = org.eclipse.emf.common.util.URI.createURI(url);

 		Resource resource = null;
 		try {

 			resource = resourceSet.getResource(uri, true, WSIL);

 			List contents = resource.getContents();

 			if (contents.size() > 0) {
 				if (contents.get(0) instanceof WSILDocument ) {
 					fWsilDocument = (WSILDocument ) contents.get(0);
 				}
 			}
 			setMessage(null);

 		} catch (Throwable t) {
 			setMessage(Messages.BPELPreferencePage_WSIL_DocumentNotLoaded, ERROR);
 			BPELUIPlugin.log(t);
 		}

 		linkTableViewer.setInput( fWsilDocument );

 		// Track the  modification of any element in the WSIL model.
 		// we don't use commands and stacks here.
 		if (fWsilDocument != null) {
 			fWsilDocument.eResource().eAdapters().add( fContentAdapter );
 		}
 	}


 	/**
 	 * @author Michal Chmielewski (michal.chmielewski@oracle.com)
 	 * @date May 4, 2007
 	 *
 	 */
 	public class AbstractColumn extends ColumnTableProvider.Column implements
 			ILabelProvider, ICellModifier {

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getHeaderText()
 		 */
 		@Override
 		public String getHeaderText() {
 			return Messages.BPELPreferencePage_WSIL_Abstract;
 		}

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getProperty()
 		 */
 		@Override
 		public String getProperty() {
 			return "abstract"; //$NON-NLS-1$
 		}

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getInitialWeight()
 		 */
 		@Override
 		public int getInitialWeight() {
 			return 50;
 		}


 		/**
 		 * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
 		 */
 		public String getText (Object element) {
 			if (element instanceof Link) {
 				Link link = (Link) element;
 				List abs = link.getAbstract();
 				// TODO: Do this based on language ?
 				if (abs.size() > 0) {
 					TypeOfAbstract absType = (TypeOfAbstract) abs.get(0);
 					return absType.getValue();
 				}
 			}
 			return "";
 		}

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#createCellEditor(org.eclipse.swt.widgets.Composite)
 		 */
 		@Override
 		public CellEditor createCellEditor (Composite parent) {
 			return new TextCellEditor(parent, SWT.NO_BACKGROUND );
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ICellModifier#canModify(java.lang.Object, java.lang.String)
 		 */
 		public boolean canModify(Object element, String property) {
 			return true;
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ICellModifier#getValue(java.lang.Object, java.lang.String)
 		 */
 		public Object getValue(Object element, String property) {
 			return getText(element);
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ICellModifier#modify(java.lang.Object, java.lang.String, java.lang.Object)
 		 */
 		public void modify(Object element, String property, Object value) {
 			if (element instanceof Link) {
 				Link link = (Link) element;
 				List abs = link.getAbstract();
 				// TODO: Do this based on language ?
 				if (abs.size() > 0) {
 					TypeOfAbstract absType = (TypeOfAbstract) abs.get(0);

 					// noop, do not needlessly modify
 					if (value.equals(absType.getValue())) {
 						return ;
 					}

 					absType.setValue( (String) value);
 				}
 			}
 		}
 	}


 	/**
 	 * @author Michal Chmielewski (michal.chmielewski@oracle.com)
 	 * @date May 4, 2007
 	 *
 	 */
 	public class LocationColumn extends ColumnTableProvider.Column
 		implements ILabelProvider, ICellModifier {

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getHeaderText()
 		 */
 		@Override
 		public String getHeaderText() {
 			return Messages.BPELPreferencePage_WSIL_Location;
 		}

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getProperty()
 		 */
 		@Override
 		public String getProperty() {
 			return "location"; //$NON-NLS-1$
 		}


 		/** (non-Javadoc)
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getInitialWeight()
 		 */
 		@Override
 		public int getInitialWeight() {
 			return 50;
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
 		 */
 		public String getText (Object element) {
 			if (element instanceof Link) {
 				Link link = (Link) element;
 				return link.getLocation();
 			}
 			return "";
 		}

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#createCellEditor(org.eclipse.swt.widgets.Composite)
 		 */
 		@Override
 		public CellEditor createCellEditor (Composite parent) {
 			return new TextCellEditor(parent, SWT.NO_BACKGROUND );
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ICellModifier#canModify(java.lang.Object, java.lang.String)
 		 */
 		public boolean canModify(Object element, String property) {
 			return true;
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ICellModifier#getValue(java.lang.Object, java.lang.String)
 		 */
 		public Object getValue(Object element, String property) {
 			return getText(element);
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ICellModifier#modify(java.lang.Object, java.lang.String, java.lang.Object)
 		 */
 		public void modify (Object element, String property, Object value) {

 			if (element instanceof Link) {
 				Link link = (Link) element;

 				//noop, do not needlessly modify
 				if (value.equals(link.getLocation())) {
 					return ;
 				}

 				org.eclipse.emf.common.util.URI linkURI = null;
 				try {

 					linkURI = org.eclipse.emf.common.util.URI.createURI( (String) value );
 					if (linkURI.isRelative()) {
 						// path is relative to me ...
 						URI parentURI = link.eResource().getURI();
 						linkURI = linkURI.resolve(parentURI);
 					}

 					// so far, so good !
 					// VZ: so why not use linkURI? To be reviewed later!
 					link.setLocation( (String) value);

 					// all goes well
 					setMessage(null);

 				} catch (java.lang.IllegalArgumentException ex) {

 					setMessage(ex.getLocalizedMessage(), ERROR);

 				}


 			}
 		}

 	}

 	/**
 	 * @author Michal Chmielewski (michal.chmielewski@oracle.com)
 	 * @date May 4, 2007
 	 */
 	public class NamespaceColumn extends ColumnTableProvider.Column implements
 			ILabelProvider {

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getHeaderText()
 		 */

 		@Override
 		public String getHeaderText() {
 			return Messages.BPELPreferencePage_WSIL_Namespace;
 		}


 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getProperty()
 		 */
 		@Override
 		public String getProperty() {
 			return "namespace"; //$NON-NLS-1$
 		}

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getInitialWeight()
 		 */
 		@Override
 		public int getInitialWeight() {
 			return 30;
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
 		 */
 		public String getText (Object element) {

 			if (element instanceof Link) {
 				Link link = (Link) element;
 				return  NamespaceUtils.convertUriToNamespace( link.getReferencedNamespace() );
 			}
 			return "";
 		}

 	}


 	/**
 	 * @author Michal Chmielewski (michal.chmielewski@oracle.com)
 	 * @date May 4, 2007
 	 */
 	public class IndexColumn extends ColumnTableProvider.Column implements
 			ILabelProvider {

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getHeaderText()
 		 */

 		@Override
 		public String getHeaderText() {
 			return Messages.BPELPreferencePage_WSIL_Index;
 		}


 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getProperty()
 		 */
 		@Override
 		public String getProperty() {
 			return "index"; //$NON-NLS-1$
 		}

 		/**
 		 * @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getInitialWeight()
 		 */
 		@Override
 		public int getInitialWeight() {
 			return 5;
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
 		 */
 		public String getText (Object element) {

 			if (element instanceof Link) {
 				Link link = (Link) element;
 				Inspection insp = (Inspection) link.eContainer();
 				return Integer.toString( insp.getLinks().indexOf(link) + 1 );
 			}

 			return "";
 		}
 	}


 }
	/*******************************************************************************
	* Copyright (c) 2005, 2012 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 API and implementation
	*******************************************************************************/
	package org.eclipse.bpel.ui.preferences;


	import java.io.File;
	import java.io.IOException;
	import java.util.Collections;
	import java.util.Iterator;
	import java.util.List;

	import org.eclipse.bpel.model.resource.BPELResourceSetImpl;
	import org.eclipse.bpel.ui.BPELUIPlugin;
	import org.eclipse.bpel.ui.IBPELUIConstants;
	import org.eclipse.bpel.ui.IHelpContextIds;
	import org.eclipse.bpel.ui.Messages;
	import org.eclipse.bpel.ui.details.providers.ColumnTableProvider;
	import org.eclipse.bpel.ui.details.providers.WSILContentProvider;
	import org.eclipse.bpel.ui.util.BPELUtil;
	import org.eclipse.bpel.ui.util.NamespaceUtils;
	import org.eclipse.bpel.ui.util.TableCursor;
	import org.eclipse.bpel.wsil.model.inspection.Inspection;
	import org.eclipse.bpel.wsil.model.inspection.InspectionFactory;
	import org.eclipse.bpel.wsil.model.inspection.InspectionPackage;
	import org.eclipse.bpel.wsil.model.inspection.Link;
	import org.eclipse.bpel.wsil.model.inspection.TypeOfAbstract;
	import org.eclipse.bpel.wsil.model.inspection.WSILDocument;
	import org.eclipse.emf.common.notify.Notification;
	import org.eclipse.emf.common.util.EList;
	import org.eclipse.emf.common.util.URI;
	import org.eclipse.emf.ecore.resource.Resource;
	import org.eclipse.emf.ecore.util.EContentAdapter;
	import org.eclipse.jface.preference.IPreferenceStore;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.jface.viewers.CellEditor;
	import org.eclipse.jface.viewers.ICellModifier;
	import org.eclipse.jface.viewers.ILabelProvider;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.TextCellEditor;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.viewers.ViewerFilter;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.FocusEvent;
	import org.eclipse.swt.events.FocusListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.PlatformUI;


	/**
	*
	* @author Michal Chmielewski (michal.chmielewski@oracle.com)
	* @date May 2, 2007
	*
	*/


	@SuppressWarnings({"nls","boxing","unchecked"})

	public class WSILPreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

	BPELResourceSetImpl resourceSet = new BPELResourceSetImpl();

	Text wsilURL;

	Table linkTable;
	ColumnTableProvider tableProvider;

	TableViewer linkTableViewer;

	TableCursor tableCursor;

	Link fLinkSelection;

	WSILDocument fWsilDocument;

	Button addButton;
	Button removeButton;
	Button moveUpButton;
	Button moveDownButton;
	Button openInBrowserButton;

	private static String WSIL = "wsil";

	// Track the modification of any element in the WSIL model.
	// we don't use commands and stacks here.
	EContentAdapter fContentAdapter = new EContentAdapter() {

	/**
	* @see org.eclipse.emf.ecore.util.EContentAdapter#notifyChanged(org.eclipse.emf.common.notify.Notification)
	*/

	@Override
	public void notifyChanged(Notification arg0) {

	super.notifyChanged(arg0);
	int eventId = arg0.getEventType();
	if (eventId == Notification.ADD \|\| eventId == Notification.SET \|\|
	eventId == Notification.MOVE \|\| eventId == Notification.REMOVE ) {

	linkTableViewer.refresh();
	updateButtons();
	}
	}
	};



	@Override
	protected Control createContents (Composite parent) {

	Composite result = new Composite(parent, SWT.NONE);

	GridLayout layout = new GridLayout( );
	layout.numColumns = 3;
	layout.verticalSpacing = 15;
	layout.makeColumnsEqualWidth = false;

	result.setLayout(layout);
	GridData data = new GridData(GridData.FILL_BOTH);
	// result.setLayoutData(data);

	// WSIL directory
	Label wsilLabel = new Label(result, SWT.NONE);
	wsilLabel.setText(Messages.BPELPreferencePage_WSIL_1);
	wsilLabel.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING));

	wsilURL = new Text(result, SWT.BORDER);
	wsilURL.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	wsilURL.addFocusListener( new FocusListener () {


	public void focusGained(FocusEvent e) {
	wsilURL.setData("lastValue",wsilURL.getText());
	}

	public void focusLost(FocusEvent e) {
	String url = wsilURL.getText();

	// no change.
	if (url.equals(wsilURL.getData("lastValue"))) {
	return ;
	}
	attemptLoad( url );
	}

	});

	Button browse = new Button(result, SWT.NONE);
	browse.setText(Messages.BPELPreferencePage_WSIL_2);
	data = new GridData(SWT.RIGHT);
	data.widthHint = 100;

	browse.setLayoutData(data);
	browse.addSelectionListener(new SelectionAdapter() {

	@Override
	public void widgetSelected(SelectionEvent e) {
	FileDialog fd = new FileDialog(getShell(), SWT.OPEN);
	fd.setFilterExtensions(new String[]{"*."+WSIL});
	String fileName = fd.open();
	if ((fileName != null) && (fileName.length() > 0)) {
	// parse to file url
	File file = new File(fileName);
	String uri = file.toURI().toString();
	wsilURL.setText( uri );
	attemptLoad(uri);

	}
	}
	}
	);


	// 2nd row of the 3 cell grid

	Label txt = new Label ( result, SWT.NO_BACKGROUND \| SWT.WRAP );

	txt.setText( Messages.BPELPreferencePage_WSIL_Description );
	data = new GridData( GridData.GRAB_HORIZONTAL );
	data.horizontalSpan = 3;
	txt.setLayoutData(data);

	//
	//

	// create table
	linkTable = new Table(result, SWT.FULL_SELECTION \| SWT.V_SCROLL \| SWT.BORDER );

	data = new GridData(GridData.FILL_BOTH);
	data.horizontalSpan = 2;

	linkTable.setLayoutData(data);

	// set up table
	linkTable.setLinesVisible(true);
	linkTable.setHeaderVisible(true);

	tableProvider = new ColumnTableProvider();
	tableProvider.add(new IndexColumn());
	tableProvider.add(new AbstractColumn());
	tableProvider.add(new LocationColumn());
	// tableProvider.add(new NamespaceColumn());

	linkTableViewer = new TableViewer(linkTable);
	tableProvider.createTableLayout(linkTable);
	linkTableViewer.setLabelProvider(tableProvider);
	linkTableViewer.setCellModifier(tableProvider);

	WSILContentProvider wsilContentProvider = new WSILContentProvider();
	wsilContentProvider.setMode( WSILContentProvider.FLATTEN );

	linkTableViewer.setContentProvider( wsilContentProvider );

	linkTableViewer.addFilter(new ViewerFilter() {
	@Override
	public boolean select(Viewer viewer, Object parentElement, Object element) {
	return element instanceof Link;
	}
	});

	linkTableViewer.setColumnProperties(tableProvider.getColumnProperties());
	linkTableViewer.setCellEditors(tableProvider.createCellEditors(linkTable));


	tableCursor = BPELUtil.createTableCursor(linkTable, linkTableViewer);

	///


	layout = new GridLayout();
	layout.numColumns = 1;
	layout.verticalSpacing = 5;

	Composite buttonList = new Composite ( result , SWT.NONE );
	buttonList.setLayout(layout);

	data = new GridData( GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_CENTER );
	buttonList.setLayoutData( data );

	addButton = new Button(buttonList, SWT.NONE);
	addButton.setText(Messages.BPELPreferencePage_WSIL_Add);
	data = new GridData( GridData.FILL_HORIZONTAL );

	addButton.setLayoutData(data);
	addButton.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {

	Link link = InspectionFactory.eINSTANCE.createLink();

	link.setLocation(Messages.BPELPreferencePage_WSIL_EnterLocation);
	link.setReferencedNamespace( InspectionPackage.eNS_URI );

	TypeOfAbstract toa = InspectionFactory.eINSTANCE.createTypeOfAbstract();
	toa.setValue(Messages.BPELPreferencePage_WSIL_EnterDescription);
	link.getAbstract().add( toa );

	// modify the document
	EList links = fWsilDocument.getInspection().getLinks();
	links.add ( link );

	// notifications of modifications are sent back to us via the EContentAdapter
	// on the WSIL Document resource.
	}
	});


	removeButton = new Button(buttonList, SWT.NONE);
	removeButton.setText(Messages.BPELPreferencePage_WSIL_Remove);
	data = new GridData( GridData.FILL_HORIZONTAL );

	removeButton.setLayoutData(data);

	removeButton.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	if (fLinkSelection == null) {
	return ;
	}
	// modify the document
	EList links = fWsilDocument.getInspection().getLinks();
	links.remove(fLinkSelection);
	}
	});



	moveUpButton = new Button(buttonList, SWT.NONE);
	moveUpButton.setText(Messages.BPELPreferencePage_WSIL_MoveUp);
	data = new GridData( GridData.FILL_HORIZONTAL );

	moveUpButton.setLayoutData(data);

	moveUpButton.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	if (fLinkSelection == null) {
	return ;
	}
	// modify the document
	EList links = fWsilDocument.getInspection().getLinks();
	int idx = links.indexOf(fLinkSelection);
	if (idx < 0) {
	return ;
	}
	links.move(idx,idx-1);
	}
	});


	moveDownButton = new Button(buttonList, SWT.NONE);
	moveDownButton.setText(Messages.BPELPreferencePage_WSIL_MoveDown);
	data = new GridData( GridData.FILL_HORIZONTAL );

	moveDownButton.setLayoutData(data);

	moveDownButton.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	if (fLinkSelection == null) {
	return ;
	}
	// modify the document
	EList links = fWsilDocument.getInspection().getLinks();
	int idx = links.indexOf(fLinkSelection);
	if (idx < 0) {
	return ;
	}
	links.move(idx, idx+1);
	}
	});

	openInBrowserButton = new Button(buttonList, SWT.NONE);
	openInBrowserButton.setText(Messages.BPELPreferencePage_WSIL_OpenInBrowser);
	data = new GridData( GridData.FILL_HORIZONTAL );

	openInBrowserButton.setLayoutData(data);

	openInBrowserButton.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	if (fLinkSelection == null) {
	return ;
	}

	// TODO:
	}
	});



	linkTableViewer.addPostSelectionChangedListener( new ISelectionChangedListener () {


	public void selectionChanged (SelectionChangedEvent event) {
	ISelection selection = event.getSelection();
	if (selection instanceof IStructuredSelection) {
	IStructuredSelection ss = (IStructuredSelection) selection;
	Object obj = ss.getFirstElement();
	fLinkSelection = obj instanceof Link ? (Link) obj : null;
	}
	updateButtons();
	}

	});

	updateButtons();

	initializeValues();

	PlatformUI.getWorkbench().getHelpSystem().setHelp(
	parent, IHelpContextIds.PREFERENCES_PAGE);

	return result;
	}


	/**
	* @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
	*/
	public void init(IWorkbench workbench) {

	}

	@Override
	protected void performDefaults() {
	super.performDefaults();
	initializeDefaults();
	}

	/**
	* @see org.eclipse.jface.preference.PreferencePage#performOk()
	*/
	@Override
	public boolean performOk() {
	storeValues();
	return true;
	}

	@Override
	protected void performApply() {
	performOk();
	}

	/**
	* Initializes states of the controls using default values in the preference store.
	*/
	private void initializeDefaults() {

	}

	/**
	* Initializes states of the controls from the preference store.
	*/
	private void initializeValues() {
	IPreferenceStore store = BPELUIPlugin.INSTANCE.getPreferenceStore();

	wsilURL.setText(store.getString(IBPELUIConstants.PREF_WSIL_URL));

	attemptLoad (wsilURL.getText() );
	}



	/**
	* Stores the values of the controls back to the preference store.
	*/
	private void storeValues() {
	IPreferenceStore store = BPELUIPlugin.INSTANCE.getPreferenceStore();

	store.setValue(IBPELUIConstants.PREF_WSIL_URL, wsilURL.getText());

	if (fWsilDocument != null) {

	Resource resource = fWsilDocument.eResource();

	try {
	resource.save(null);
	} catch (IOException e) {
	BPELUIPlugin.log(e);
	}
	}
	}


	void updateButtons ( ) {

	List linkList = (fWsilDocument == null ? Collections.EMPTY_LIST : fWsilDocument.getInspection().getLinks());

	int idx = linkList.indexOf(fLinkSelection);
	// -1 if not found ...
	moveUpButton.setEnabled(idx > 0);
	moveDownButton.setEnabled(idx >= 0 && idx < linkList.size() - 1);
	removeButton.setEnabled( fLinkSelection != null );
	addButton.setEnabled(fWsilDocument!=null);
	openInBrowserButton.setEnabled( fLinkSelection != null );
	}



	/**
	* @see org.eclipse.jface.dialogs.DialogPage#dispose()
	*/
	@Override
	public void dispose() {

	Iterator it = resourceSet.getResources().iterator();
	while (it.hasNext()) {
	Resource r = (Resource) it.next();
	r.eAdapters().clear();
	}
	// TODO Auto-generated method stub
	super.dispose();
	}


	void attemptLoad ( String url ) {

	url = url.trim();

	if (url.length() < 1) {
	return ;
	}
	if(!url.endsWith(WSIL)){
	setMessage(Messages.BPELPreferencePage_WSIL_NameLimit, ERROR);
	return;
	}

	if (fWsilDocument != null) {
	fWsilDocument.eResource().eAdapters().remove( fContentAdapter );
	fWsilDocument = null;
	}

	org.eclipse.emf.common.util.URI uri = org.eclipse.emf.common.util.URI.createURI(url);

	Resource resource = null;
	try {

	resource = resourceSet.getResource(uri, true, WSIL);

	List contents = resource.getContents();

	if (contents.size() > 0) {
	if (contents.get(0) instanceof WSILDocument ) {
	fWsilDocument = (WSILDocument ) contents.get(0);
	}
	}
	setMessage(null);

	} catch (Throwable t) {
	setMessage(Messages.BPELPreferencePage_WSIL_DocumentNotLoaded, ERROR);
	BPELUIPlugin.log(t);
	}

	linkTableViewer.setInput( fWsilDocument );

	// Track the modification of any element in the WSIL model.
	// we don't use commands and stacks here.
	if (fWsilDocument != null) {
	fWsilDocument.eResource().eAdapters().add( fContentAdapter );
	}
	}



	/**
	* @author Michal Chmielewski (michal.chmielewski@oracle.com)
	* @date May 4, 2007
	*
	*/
	public class AbstractColumn extends ColumnTableProvider.Column implements
	ILabelProvider, ICellModifier {

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getHeaderText()
	*/
	@Override
	public String getHeaderText() {
	return Messages.BPELPreferencePage_WSIL_Abstract;
	}

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getProperty()
	*/
	@Override
	public String getProperty() {
	return "abstract"; //$NON-NLS-1$
	}

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getInitialWeight()
	*/
	@Override
	public int getInitialWeight() {
	return 50;
	}


	/**
	* @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
	*/
	public String getText (Object element) {
	if (element instanceof Link) {
	Link link = (Link) element;
	List abs = link.getAbstract();
	// TODO: Do this based on language ?
	if (abs.size() > 0) {
	TypeOfAbstract absType = (TypeOfAbstract) abs.get(0);
	return absType.getValue();
	}
	}
	return "";
	}

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#createCellEditor(org.eclipse.swt.widgets.Composite)
	*/
	@Override
	public CellEditor createCellEditor (Composite parent) {
	return new TextCellEditor(parent, SWT.NO_BACKGROUND );
	}

	/**
	* @see org.eclipse.jface.viewers.ICellModifier#canModify(java.lang.Object, java.lang.String)
	*/
	public boolean canModify(Object element, String property) {
	return true;
	}

	/**
	* @see org.eclipse.jface.viewers.ICellModifier#getValue(java.lang.Object, java.lang.String)
	*/
	public Object getValue(Object element, String property) {
	return getText(element);
	}

	/**
	* @see org.eclipse.jface.viewers.ICellModifier#modify(java.lang.Object, java.lang.String, java.lang.Object)
	*/
	public void modify(Object element, String property, Object value) {
	if (element instanceof Link) {
	Link link = (Link) element;
	List abs = link.getAbstract();
	// TODO: Do this based on language ?
	if (abs.size() > 0) {
	TypeOfAbstract absType = (TypeOfAbstract) abs.get(0);

	// noop, do not needlessly modify
	if (value.equals(absType.getValue())) {
	return ;
	}

	absType.setValue( (String) value);
	}
	}
	}
	}



	/**
	* @author Michal Chmielewski (michal.chmielewski@oracle.com)
	* @date May 4, 2007
	*
	*/
	public class LocationColumn extends ColumnTableProvider.Column
	implements ILabelProvider, ICellModifier {

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getHeaderText()
	*/
	@Override
	public String getHeaderText() {
	return Messages.BPELPreferencePage_WSIL_Location;
	}

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getProperty()
	*/
	@Override
	public String getProperty() {
	return "location"; //$NON-NLS-1$
	}


	/** (non-Javadoc)
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getInitialWeight()
	*/
	@Override
	public int getInitialWeight() {
	return 50;
	}

	/**
	* @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
	*/
	public String getText (Object element) {
	if (element instanceof Link) {
	Link link = (Link) element;
	return link.getLocation();
	}
	return "";
	}

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#createCellEditor(org.eclipse.swt.widgets.Composite)
	*/
	@Override
	public CellEditor createCellEditor (Composite parent) {
	return new TextCellEditor(parent, SWT.NO_BACKGROUND );
	}

	/**
	* @see org.eclipse.jface.viewers.ICellModifier#canModify(java.lang.Object, java.lang.String)
	*/
	public boolean canModify(Object element, String property) {
	return true;
	}

	/**
	* @see org.eclipse.jface.viewers.ICellModifier#getValue(java.lang.Object, java.lang.String)
	*/
	public Object getValue(Object element, String property) {
	return getText(element);
	}

	/**
	* @see org.eclipse.jface.viewers.ICellModifier#modify(java.lang.Object, java.lang.String, java.lang.Object)
	*/
	public void modify (Object element, String property, Object value) {

	if (element instanceof Link) {
	Link link = (Link) element;

	//noop, do not needlessly modify
	if (value.equals(link.getLocation())) {
	return ;
	}

	org.eclipse.emf.common.util.URI linkURI = null;
	try {

	linkURI = org.eclipse.emf.common.util.URI.createURI( (String) value );
	if (linkURI.isRelative()) {
	// path is relative to me ...
	URI parentURI = link.eResource().getURI();
	linkURI = linkURI.resolve(parentURI);
	}

	// so far, so good !
	// VZ: so why not use linkURI? To be reviewed later!
	link.setLocation( (String) value);

	// all goes well
	setMessage(null);

	} catch (java.lang.IllegalArgumentException ex) {

	setMessage(ex.getLocalizedMessage(), ERROR);

	}


	}
	}

	}

	/**
	* @author Michal Chmielewski (michal.chmielewski@oracle.com)
	* @date May 4, 2007
	*/
	public class NamespaceColumn extends ColumnTableProvider.Column implements
	ILabelProvider {

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getHeaderText()
	*/

	@Override
	public String getHeaderText() {
	return Messages.BPELPreferencePage_WSIL_Namespace;
	}


	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getProperty()
	*/
	@Override
	public String getProperty() {
	return "namespace"; //$NON-NLS-1$
	}

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getInitialWeight()
	*/
	@Override
	public int getInitialWeight() {
	return 30;
	}

	/**
	* @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
	*/
	public String getText (Object element) {

	if (element instanceof Link) {
	Link link = (Link) element;
	return NamespaceUtils.convertUriToNamespace( link.getReferencedNamespace() );
	}
	return "";
	}

	}


	/**
	* @author Michal Chmielewski (michal.chmielewski@oracle.com)
	* @date May 4, 2007
	*/
	public class IndexColumn extends ColumnTableProvider.Column implements
	ILabelProvider {

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getHeaderText()
	*/

	@Override
	public String getHeaderText() {
	return Messages.BPELPreferencePage_WSIL_Index;
	}


	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getProperty()
	*/
	@Override
	public String getProperty() {
	return "index"; //$NON-NLS-1$
	}

	/**
	* @see org.eclipse.bpel.ui.details.providers.ColumnTableProvider.Column#getInitialWeight()
	*/
	@Override
	public int getInitialWeight() {
	return 5;
	}

	/**
	* @see org.eclipse.jface.viewers.ILabelProvider#getText(java.lang.Object)
	*/
	public String getText (Object element) {

	if (element instanceof Link) {
	Link link = (Link) element;
	Inspection insp = (Inspection) link.eContainer();
	return Integer.toString( insp.getLinks().indexOf(link) + 1 );
	}

	return "";
	}
	}


	}