rdt/org.eclipse.ptp.rdt.ui/src/org/eclipse/ptp/rdt/ui/wizards/ServiceModelWidget.java - ptp/org.eclipse.ptp - Git at Google

 /*******************************************************************************
  * Copyright (c) 2008, 2009 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.ptp.rdt.ui.wizards;

 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.LinkedHashSet;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;

 import org.eclipse.cdt.core.CCProjectNature;
 import org.eclipse.cdt.core.CProjectNature;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.jface.layout.TableColumnLayout;
 import org.eclipse.jface.viewers.ColumnWeightData;
 import org.eclipse.ptp.rdt.core.RDTLog;
 import org.eclipse.ptp.rdt.ui.messages.Messages;
 import org.eclipse.ptp.rdt.ui.serviceproviders.NullBuildServiceProvider;
 import org.eclipse.ptp.rdt.ui.serviceproviders.NullCIndexServiceProvider;
 import org.eclipse.ptp.services.core.IService;
 import org.eclipse.ptp.services.core.IServiceProvider;
 import org.eclipse.ptp.services.core.IServiceProviderDescriptor;
 import org.eclipse.ptp.services.core.ServiceModelManager;
 import org.eclipse.ptp.services.ui.IServiceProviderConfiguration;
 import org.eclipse.ptp.services.ui.IServiceProviderContributor;
 import org.eclipse.ptp.services.ui.ServiceModelUIManager;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.CCombo;
 import org.eclipse.swt.custom.TableEditor;
 import org.eclipse.swt.layout.FillLayout;
 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.Event;
 import org.eclipse.swt.widgets.Listener;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.TableItem;

 /**
  * <strong>EXPERIMENTAL</strong>. This class or interface has been added as
  * part of a work in progress. There is no guarantee that this API will work or
  * that it will remain the same. Please do not use this API without consulting
  * with the RDT team.
  *
  * @deprecated
  * @see org.eclipse.ptp.services.ui.wizards.ServiceModelWidget
  */
 public class ServiceModelWidget{

 	protected static final String PROVIDER_KEY = "provider-id"; //$NON-NLS-1$
 	protected static final String SERVICE_KEY = "service-id"; //$NON-NLS-1$

 	protected Map<String, String> fServiceIDToSelectedProviderID;
 	protected Map<String, IServiceProvider> fProviderIDToProviderMap;

 	protected Table fTable;
 	protected Button fConfigureButton;
 	protected Listener fConfigChangeListener = null;

 	public ServiceModelWidget() {
 		fServiceIDToSelectedProviderID = new HashMap<String, String>();
 		fProviderIDToProviderMap = new HashMap<String, IServiceProvider>();
 	}

 	public Control createContents(Composite parent) {
 		Composite canvas = new Composite(parent, SWT.NONE);
 		GridLayout canvasLayout = new GridLayout(2, false);
 		canvas.setLayout(canvasLayout);

 		Composite tableParent = new Composite(canvas, SWT.NONE);
 		tableParent.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

 		fTable = new Table (tableParent, SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION | SWT.H_SCROLL);
 		fTable.setLinesVisible (true);
 		fTable.setHeaderVisible (true);

 		TableColumnLayout layout = new TableColumnLayout();
 		// create the columns and headers... note fourth column holds "Configure..." buttons and hence has no title.
 		String[] titles = {Messages.getString("ServiceModelWidget.0"), Messages.getString("ServiceModelWidget.1"), Messages.getString("ServiceModelWidget.3")}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 		for (int i=0; i<titles.length; i++) {
 			TableColumn column = new TableColumn (fTable, SWT.NONE);
 			column.setText (titles [i]);
 			int width = ColumnWeightData.MINIMUM_WIDTH;

 			// set the column widths
 			switch (i) {
 			case 0: // Service name... usually short
 				width = 100;
 				break;

 			case 1: // provider name... typically long
 			case 2: // configuration string... typically long
 				width = 250;
 				break;

 			}

 			layout.setColumnData(column, new ColumnWeightData(1, width, true));


 		}
 		tableParent.setLayout(layout);
 		fTable.setLayout(new FillLayout());

 		createTableContent(null);

 		fTable.setVisible(true);

 		final TableEditor editor = new TableEditor(fTable);
 		editor.horizontalAlignment = SWT.BEGINNING;
 		editor.grabHorizontal = true;
 		fTable.addListener(SWT.Selection, new Listener() {
 			public void handleEvent(Event event) {
 				int selectionIndex = fTable.getSelectionIndex();
 				if (selectionIndex == -1) {
 					fConfigureButton.setEnabled(false);
 					return;
 				}
 				final TableItem item = fTable.getItem(selectionIndex);
 				IService service = (IService) item.getData(SERVICE_KEY);
 				IServiceProviderDescriptor provider = (IServiceProviderDescriptor) item.getData(PROVIDER_KEY);

 				updateConfigureButton(provider);

 				final CCombo combo = new CCombo(fTable, SWT.READ_ONLY);

 				// populate with list of providers
 				Set<IServiceProviderDescriptor> providers = service.getProviders();
 				Iterator<IServiceProviderDescriptor> providerIterator = providers.iterator();

 				int index = 0;
 				final List<IServiceProviderDescriptor> providerIds = new LinkedList<IServiceProviderDescriptor>();
 				while(providerIterator.hasNext()) {
 					IServiceProviderDescriptor descriptor = providerIterator.next();
 					combo.add(descriptor.getName(), index);
 					providerIds.add(descriptor);
 					if (descriptor.equals(provider)) {
 						combo.select(index);
 					}
 					++index;
 				}

 				combo.setFocus();
 				Listener listener = new Listener() {
 					public void handleEvent(Event event) {
 						switch (event.type) {
 						case SWT.FocusOut:
 							combo.dispose();
 							break;
 						case SWT.Selection:
 							int selection = combo.getSelectionIndex();
 							if (selection == -1) {
 								return;
 							}
 							IServiceProviderDescriptor descriptor = providerIds.get(selection);
 							item.setText(1, descriptor.getName());
 							IService service = (IService) item.getData(SERVICE_KEY);
 							item.setData(PROVIDER_KEY, descriptor);

 							updateConfigureButton(descriptor);

 							//look in cache to see if there is a service provider that is already setup
 							IServiceProvider provider = fProviderIDToProviderMap.get(descriptor.getId());
 							String configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$
 							if (provider != null) { //a service provider was already setup
 								configString = provider.getConfigurationString();
 							}

 							item.setText(2, configString);

 							if (descriptor.getId().compareTo(NullBuildServiceProvider.ID) == 0 ||
 									descriptor.getId().compareTo(NullCIndexServiceProvider.ID) == 0) {

 								//since the null providers are chosen, setup the service provider and the mappings
 								ServiceModelManager manager = ServiceModelManager.getInstance();
 								IServiceProvider serviceProvider = manager.getServiceProvider(descriptor);

 								configString = serviceProvider.getConfigurationString();
 								if (configString == null) {
 									configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$
 								}
 								item.setText(2, configString);
 								fProviderIDToProviderMap.put(descriptor.getId(), serviceProvider);
 							}

 							fServiceIDToSelectedProviderID.put(service.getId(), descriptor.getId());

 							// allow container page to check if configurations are set
 							if (fConfigChangeListener != null)
 								fConfigChangeListener.handleEvent(null);

 							combo.dispose();
 							break;
 						}
 					}
 				};
 				combo.addListener(SWT.FocusOut, listener);
 				combo.addListener(SWT.Selection, listener);

 				editor.setEditor(combo, item, 1);
 			}
 		});

 		fConfigureButton = new Button(canvas, SWT.PUSH);
 		fConfigureButton.setEnabled(false);
 		fConfigureButton.setText(Messages.getString("ServiceModelWidget.2")); //$NON-NLS-1$
 		fConfigureButton.setLayoutData(new GridData(SWT.BEGINNING, SWT.BEGINNING, false, false));
 		Listener configureListener = getConfigureListener();
 		fConfigureButton.addListener(SWT.Selection, configureListener);
 		return canvas;
 	}

 	public class ConfigureListener implements Listener {
 		public void handleEvent(Event event) {
 			// launch the configuration UI for the service provider
 			TableItem[] selection = fTable.getSelection();
 			if (selection.length == 0) {
 				return;
 			}
 			TableItem item = selection[0];
 			ServiceModelManager manager = ServiceModelManager.getInstance();
 			IServiceProviderDescriptor descriptor = (IServiceProviderDescriptor) item.getData(PROVIDER_KEY);

 			//look in cache first
 			IServiceProvider serviceProvider = fProviderIDToProviderMap.get(descriptor.getId());

 			if (serviceProvider == null) {
 				serviceProvider = manager.getServiceProvider(descriptor);
 				fProviderIDToProviderMap.put(descriptor.getId(), serviceProvider);
 			}

 			IServiceProviderConfiguration configUI = ServiceModelUIManager.getInstance().getServiceProviderConfigurationUI(serviceProvider);
 			configUI.configureServiceProvider(serviceProvider, fConfigureButton.getShell());

 			String configString = serviceProvider.getConfigurationString();
 			// column 2 holds the configuration string of the provider's current configuration
 			if (configString == null) {
 				configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$
 			}
 			item.setText(2, configString);

 			// allow container page to check if configurations are set
 			if (fConfigChangeListener != null)
 				fConfigChangeListener.handleEvent(null);
 		}
 	}

 	//sub class may override to change behaviour
 	protected Listener getConfigureListener() {
 		return new ConfigureListener();
 	}

 	/**
 	 * Generate the services, providers and provider configuration available for
 	 * the given project in the table
 	 *
 	 * Sub-classes may override its behaviour
 	 * @param project
 	 */
 	protected void createTableContent(IProject project) {
 		fTable.removeAll();
 		Set<IService> allApplicableServices = getContributedServices(project);

 		Iterator<IService> iterator = allApplicableServices.iterator();

 		// get the contributed services... we need one row for each
 		while(iterator.hasNext()) {
 			final IService service = iterator.next();

 			TableItem item = new TableItem (fTable, SWT.NONE);

 			// column 0 lists the name of the service
 			item.setText (0, service.getName());
 			item.setData(SERVICE_KEY, service);

 			// column 1 holds a dropdown with a list of providers
 			// default entry is the null provider if there is one
 			IServiceProviderDescriptor descriptor;
 //			if (service.getId().compareTo(NullBuildServiceProvider.SERVICE_ID) == 0)
 //				descriptor = service.getProviderDescriptor(NullBuildServiceProvider.ID);
 //			else if (service.getId().compareTo(NullCIndexServiceProvider.SERVICE_ID) == 0)
 //				descriptor = service.getProviderDescriptor(NullCIndexServiceProvider.ID);
 //			else
 				descriptor = service.getProviders().iterator().next();
 			item.setText(1, descriptor.getName());
 			item.setData(PROVIDER_KEY, descriptor);

 			// No actual providers are created yet so there's no configuration
 			String configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$

 			if (descriptor.getId().compareTo(NullBuildServiceProvider.ID) == 0 ||
 					descriptor.getId().compareTo(NullCIndexServiceProvider.ID) == 0) {

 				//since the null providers are chosen, setup the service provider and the mappings
 				ServiceModelManager manager = ServiceModelManager.getInstance();
 				IServiceProvider serviceProvider = manager.getServiceProvider(descriptor);

 				configString = serviceProvider.getConfigurationString();
 				if (configString == null) {
 					configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$
 				}

 				fProviderIDToProviderMap.put(descriptor.getId(), serviceProvider);
 			}

 			// column 2 holds the configuration string of the provider's current configuration
 			item.setText(2, configString);

 			fServiceIDToSelectedProviderID.put(service.getId(), descriptor.getId());

 			// allow container page to check if configurations are set
 			if (fConfigChangeListener != null)
 				fConfigChangeListener.handleEvent(null);
 		}
 	}

 	/**
 	 * Find available remote services and service providers for a given project
 	 *
 	 * If project is null, the C and C++ natures are used to determine which services
 	 * are available
 	 */
 	protected Set<IService> getContributedServices(IProject project) {
 		ServiceModelManager modelManager = ServiceModelManager.getInstance();
 		Set<IService> allApplicableServices = new LinkedHashSet<IService>();

 		if (project != null) {

 			String[] natureIds = new String[] {};
 			try {
 				//get the project natures of the project
 				natureIds = project.getDescription().getNatureIds();
 			} catch (CoreException e) {
 				RDTLog.logError(e);
 			}

 			for (int i = 0; i < natureIds.length; i++) {
 				String natureId = natureIds[i];
 				Set<IService> services = modelManager.getServices(natureId);
 				if (services != null)
 					allApplicableServices.addAll(services);
 			}
 		}
 		else {
 			Set<IService> cppServices = modelManager.getServices(CCProjectNature.CC_NATURE_ID);
 			Set<IService> cServices = modelManager.getServices(CProjectNature.C_NATURE_ID);

 			allApplicableServices.addAll(cppServices);
 			allApplicableServices.addAll(cServices);
 		}
 		return allApplicableServices;
 	}

 	public Map<String, String> getServiceIDToSelectedProviderID() {
 		return fServiceIDToSelectedProviderID;
 	}

 	public Table getTable() {
 		return fTable;
 	}

 	public void setTable(Table table) {
 		fTable = table;
 	}

 	public void setServiceIDToSelectedProviderID(
 			Map<String, String> serviceIDToSelectedProviderID) {
 		fServiceIDToSelectedProviderID = serviceIDToSelectedProviderID;
 	}

 	public Map<String, IServiceProvider> getProviderIDToProviderMap() {
 		return fProviderIDToProviderMap;
 	}

 	public void setProviderIDToProviderMap(
 			Map<String, IServiceProvider> providerIDToProviderMap) {
 		fProviderIDToProviderMap = providerIDToProviderMap;
 	}

 	/**
 	 * Sub-class may override behaviour
 	 * @return true if all available services have been configured
 	 */
 	public boolean isConfigured() {
 		return isConfigured(null, fServiceIDToSelectedProviderID, fProviderIDToProviderMap);
 	}

 	/**
 	 * Determine if all service providers have been configured
 	 * @param project
 	 * @param serviceIDToSelectedProviderID
 	 * @param providerIDToProviderMap
 	 * @return true if all service providers have been configured
 	 */
 	protected boolean isConfigured(IProject project, Map<String, String> serviceIDToSelectedProviderID, Map<String, IServiceProvider> providerIDToProviderMap) {
 		Set<IService> allApplicableServices = getContributedServices(project);
 		Iterator<IService> iterator = allApplicableServices.iterator();
 		boolean configured = true;
 		while (iterator.hasNext()) {
 			String providerID = serviceIDToSelectedProviderID.get(iterator.next().getId());
 			if (providerID == null)
 				return false;
 			else {
 				IServiceProvider provider = providerIDToProviderMap.get(providerID);
 				if (provider == null)
 					return false;
 				else
 					configured = configured && provider.isConfigured();
 			}
 		}
 		return configured;
 	}


 	/**
 	 * @return the configuration change listener
 	 */
 	public Listener getConfigChangeListener() {
 		return fConfigChangeListener;
 	}

 	/**
 	 * Listens for changes in service provider configuration
 	 * @param configChangeListener the configuration change listener to set
 	 */
 	public void setConfigChangeListener(Listener configChangeListener) {
 		fConfigChangeListener = configChangeListener;
 	}

 	/**
 	 * Enable/disable the configure button in this widget based on the service provider descriptor selected
 	 * @param enabled
 	 */
 	protected void updateConfigureButton(IServiceProviderDescriptor descriptor) {
 		//no need to configure the null providers so disable the configure button

 		if (descriptor.getId().compareTo(NullBuildServiceProvider.ID) == 0 ||
 			descriptor.getId().compareTo(NullCIndexServiceProvider.ID) == 0)

 			fConfigureButton.setEnabled(false);
 		else
 			fConfigureButton.setEnabled(true);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2008, 2009 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.ptp.rdt.ui.wizards;

	import java.util.HashMap;
	import java.util.Iterator;
	import java.util.LinkedHashSet;
	import java.util.LinkedList;
	import java.util.List;
	import java.util.Map;
	import java.util.Set;

	import org.eclipse.cdt.core.CCProjectNature;
	import org.eclipse.cdt.core.CProjectNature;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.jface.layout.TableColumnLayout;
	import org.eclipse.jface.viewers.ColumnWeightData;
	import org.eclipse.ptp.rdt.core.RDTLog;
	import org.eclipse.ptp.rdt.ui.messages.Messages;
	import org.eclipse.ptp.rdt.ui.serviceproviders.NullBuildServiceProvider;
	import org.eclipse.ptp.rdt.ui.serviceproviders.NullCIndexServiceProvider;
	import org.eclipse.ptp.services.core.IService;
	import org.eclipse.ptp.services.core.IServiceProvider;
	import org.eclipse.ptp.services.core.IServiceProviderDescriptor;
	import org.eclipse.ptp.services.core.ServiceModelManager;
	import org.eclipse.ptp.services.ui.IServiceProviderConfiguration;
	import org.eclipse.ptp.services.ui.IServiceProviderContributor;
	import org.eclipse.ptp.services.ui.ServiceModelUIManager;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.CCombo;
	import org.eclipse.swt.custom.TableEditor;
	import org.eclipse.swt.layout.FillLayout;
	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.Event;
	import org.eclipse.swt.widgets.Listener;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.swt.widgets.TableItem;

	/**
	* <strong>EXPERIMENTAL</strong>. This class or interface has been added as
	* part of a work in progress. There is no guarantee that this API will work or
	* that it will remain the same. Please do not use this API without consulting
	* with the RDT team.
	*
	* @deprecated
	* @see org.eclipse.ptp.services.ui.wizards.ServiceModelWidget
	*/
	public class ServiceModelWidget{

	protected static final String PROVIDER_KEY = "provider-id"; //$NON-NLS-1$
	protected static final String SERVICE_KEY = "service-id"; //$NON-NLS-1$

	protected Map<String, String> fServiceIDToSelectedProviderID;
	protected Map<String, IServiceProvider> fProviderIDToProviderMap;

	protected Table fTable;
	protected Button fConfigureButton;
	protected Listener fConfigChangeListener = null;

	public ServiceModelWidget() {
	fServiceIDToSelectedProviderID = new HashMap<String, String>();
	fProviderIDToProviderMap = new HashMap<String, IServiceProvider>();
	}

	public Control createContents(Composite parent) {
	Composite canvas = new Composite(parent, SWT.NONE);
	GridLayout canvasLayout = new GridLayout(2, false);
	canvas.setLayout(canvasLayout);

	Composite tableParent = new Composite(canvas, SWT.NONE);
	tableParent.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

	fTable = new Table (tableParent, SWT.MULTI \| SWT.BORDER \| SWT.FULL_SELECTION \| SWT.H_SCROLL);
	fTable.setLinesVisible (true);
	fTable.setHeaderVisible (true);

	TableColumnLayout layout = new TableColumnLayout();
	// create the columns and headers... note fourth column holds "Configure..." buttons and hence has no title.
	String[] titles = {Messages.getString("ServiceModelWidget.0"), Messages.getString("ServiceModelWidget.1"), Messages.getString("ServiceModelWidget.3")}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	for (int i=0; i<titles.length; i++) {
	TableColumn column = new TableColumn (fTable, SWT.NONE);
	column.setText (titles [i]);
	int width = ColumnWeightData.MINIMUM_WIDTH;

	// set the column widths
	switch (i) {
	case 0: // Service name... usually short
	width = 100;
	break;

	case 1: // provider name... typically long
	case 2: // configuration string... typically long
	width = 250;
	break;

	}

	layout.setColumnData(column, new ColumnWeightData(1, width, true));


	}
	tableParent.setLayout(layout);
	fTable.setLayout(new FillLayout());

	createTableContent(null);

	fTable.setVisible(true);

	final TableEditor editor = new TableEditor(fTable);
	editor.horizontalAlignment = SWT.BEGINNING;
	editor.grabHorizontal = true;
	fTable.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event event) {
	int selectionIndex = fTable.getSelectionIndex();
	if (selectionIndex == -1) {
	fConfigureButton.setEnabled(false);
	return;
	}
	final TableItem item = fTable.getItem(selectionIndex);
	IService service = (IService) item.getData(SERVICE_KEY);
	IServiceProviderDescriptor provider = (IServiceProviderDescriptor) item.getData(PROVIDER_KEY);

	updateConfigureButton(provider);

	final CCombo combo = new CCombo(fTable, SWT.READ_ONLY);

	// populate with list of providers
	Set<IServiceProviderDescriptor> providers = service.getProviders();
	Iterator<IServiceProviderDescriptor> providerIterator = providers.iterator();

	int index = 0;
	final List<IServiceProviderDescriptor> providerIds = new LinkedList<IServiceProviderDescriptor>();
	while(providerIterator.hasNext()) {
	IServiceProviderDescriptor descriptor = providerIterator.next();
	combo.add(descriptor.getName(), index);
	providerIds.add(descriptor);
	if (descriptor.equals(provider)) {
	combo.select(index);
	}
	++index;
	}

	combo.setFocus();
	Listener listener = new Listener() {
	public void handleEvent(Event event) {
	switch (event.type) {
	case SWT.FocusOut:
	combo.dispose();
	break;
	case SWT.Selection:
	int selection = combo.getSelectionIndex();
	if (selection == -1) {
	return;
	}
	IServiceProviderDescriptor descriptor = providerIds.get(selection);
	item.setText(1, descriptor.getName());
	IService service = (IService) item.getData(SERVICE_KEY);
	item.setData(PROVIDER_KEY, descriptor);

	updateConfigureButton(descriptor);

	//look in cache to see if there is a service provider that is already setup
	IServiceProvider provider = fProviderIDToProviderMap.get(descriptor.getId());
	String configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$
	if (provider != null) { //a service provider was already setup
	configString = provider.getConfigurationString();
	}

	item.setText(2, configString);

	if (descriptor.getId().compareTo(NullBuildServiceProvider.ID) == 0 \|\|
	descriptor.getId().compareTo(NullCIndexServiceProvider.ID) == 0) {

	//since the null providers are chosen, setup the service provider and the mappings
	ServiceModelManager manager = ServiceModelManager.getInstance();
	IServiceProvider serviceProvider = manager.getServiceProvider(descriptor);

	configString = serviceProvider.getConfigurationString();
	if (configString == null) {
	configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$
	}
	item.setText(2, configString);
	fProviderIDToProviderMap.put(descriptor.getId(), serviceProvider);
	}

	fServiceIDToSelectedProviderID.put(service.getId(), descriptor.getId());

	// allow container page to check if configurations are set
	if (fConfigChangeListener != null)
	fConfigChangeListener.handleEvent(null);

	combo.dispose();
	break;
	}
	}
	};
	combo.addListener(SWT.FocusOut, listener);
	combo.addListener(SWT.Selection, listener);

	editor.setEditor(combo, item, 1);
	}
	});

	fConfigureButton = new Button(canvas, SWT.PUSH);
	fConfigureButton.setEnabled(false);
	fConfigureButton.setText(Messages.getString("ServiceModelWidget.2")); //$NON-NLS-1$
	fConfigureButton.setLayoutData(new GridData(SWT.BEGINNING, SWT.BEGINNING, false, false));
	Listener configureListener = getConfigureListener();
	fConfigureButton.addListener(SWT.Selection, configureListener);
	return canvas;
	}

	public class ConfigureListener implements Listener {
	public void handleEvent(Event event) {
	// launch the configuration UI for the service provider
	TableItem[] selection = fTable.getSelection();
	if (selection.length == 0) {
	return;
	}
	TableItem item = selection[0];
	ServiceModelManager manager = ServiceModelManager.getInstance();
	IServiceProviderDescriptor descriptor = (IServiceProviderDescriptor) item.getData(PROVIDER_KEY);

	//look in cache first
	IServiceProvider serviceProvider = fProviderIDToProviderMap.get(descriptor.getId());

	if (serviceProvider == null) {
	serviceProvider = manager.getServiceProvider(descriptor);
	fProviderIDToProviderMap.put(descriptor.getId(), serviceProvider);
	}

	IServiceProviderConfiguration configUI = ServiceModelUIManager.getInstance().getServiceProviderConfigurationUI(serviceProvider);
	configUI.configureServiceProvider(serviceProvider, fConfigureButton.getShell());

	String configString = serviceProvider.getConfigurationString();
	// column 2 holds the configuration string of the provider's current configuration
	if (configString == null) {
	configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$
	}
	item.setText(2, configString);

	// allow container page to check if configurations are set
	if (fConfigChangeListener != null)
	fConfigChangeListener.handleEvent(null);
	}
	}

	//sub class may override to change behaviour
	protected Listener getConfigureListener() {
	return new ConfigureListener();
	}

	/**
	* Generate the services, providers and provider configuration available for
	* the given project in the table
	*
	* Sub-classes may override its behaviour
	* @param project
	*/
	protected void createTableContent(IProject project) {
	fTable.removeAll();
	Set<IService> allApplicableServices = getContributedServices(project);

	Iterator<IService> iterator = allApplicableServices.iterator();

	// get the contributed services... we need one row for each
	while(iterator.hasNext()) {
	final IService service = iterator.next();

	TableItem item = new TableItem (fTable, SWT.NONE);

	// column 0 lists the name of the service
	item.setText (0, service.getName());
	item.setData(SERVICE_KEY, service);

	// column 1 holds a dropdown with a list of providers
	// default entry is the null provider if there is one
	IServiceProviderDescriptor descriptor;
	// if (service.getId().compareTo(NullBuildServiceProvider.SERVICE_ID) == 0)
	// descriptor = service.getProviderDescriptor(NullBuildServiceProvider.ID);
	// else if (service.getId().compareTo(NullCIndexServiceProvider.SERVICE_ID) == 0)
	// descriptor = service.getProviderDescriptor(NullCIndexServiceProvider.ID);
	// else
	descriptor = service.getProviders().iterator().next();
	item.setText(1, descriptor.getName());
	item.setData(PROVIDER_KEY, descriptor);

	// No actual providers are created yet so there's no configuration
	String configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$

	if (descriptor.getId().compareTo(NullBuildServiceProvider.ID) == 0 \|\|
	descriptor.getId().compareTo(NullCIndexServiceProvider.ID) == 0) {

	//since the null providers are chosen, setup the service provider and the mappings
	ServiceModelManager manager = ServiceModelManager.getInstance();
	IServiceProvider serviceProvider = manager.getServiceProvider(descriptor);

	configString = serviceProvider.getConfigurationString();
	if (configString == null) {
	configString = Messages.getString("ServiceModelWidget.4"); //$NON-NLS-1$
	}

	fProviderIDToProviderMap.put(descriptor.getId(), serviceProvider);
	}

	// column 2 holds the configuration string of the provider's current configuration
	item.setText(2, configString);

	fServiceIDToSelectedProviderID.put(service.getId(), descriptor.getId());

	// allow container page to check if configurations are set
	if (fConfigChangeListener != null)
	fConfigChangeListener.handleEvent(null);
	}
	}

	/**
	* Find available remote services and service providers for a given project
	*
	* If project is null, the C and C++ natures are used to determine which services
	* are available
	*/
	protected Set<IService> getContributedServices(IProject project) {
	ServiceModelManager modelManager = ServiceModelManager.getInstance();
	Set<IService> allApplicableServices = new LinkedHashSet<IService>();

	if (project != null) {

	String[] natureIds = new String[] {};
	try {
	//get the project natures of the project
	natureIds = project.getDescription().getNatureIds();
	} catch (CoreException e) {
	RDTLog.logError(e);
	}

	for (int i = 0; i < natureIds.length; i++) {
	String natureId = natureIds[i];
	Set<IService> services = modelManager.getServices(natureId);
	if (services != null)
	allApplicableServices.addAll(services);
	}
	}
	else {
	Set<IService> cppServices = modelManager.getServices(CCProjectNature.CC_NATURE_ID);
	Set<IService> cServices = modelManager.getServices(CProjectNature.C_NATURE_ID);

	allApplicableServices.addAll(cppServices);
	allApplicableServices.addAll(cServices);
	}
	return allApplicableServices;
	}

	public Map<String, String> getServiceIDToSelectedProviderID() {
	return fServiceIDToSelectedProviderID;
	}

	public Table getTable() {
	return fTable;
	}

	public void setTable(Table table) {
	fTable = table;
	}

	public void setServiceIDToSelectedProviderID(
	Map<String, String> serviceIDToSelectedProviderID) {
	fServiceIDToSelectedProviderID = serviceIDToSelectedProviderID;
	}

	public Map<String, IServiceProvider> getProviderIDToProviderMap() {
	return fProviderIDToProviderMap;
	}

	public void setProviderIDToProviderMap(
	Map<String, IServiceProvider> providerIDToProviderMap) {
	fProviderIDToProviderMap = providerIDToProviderMap;
	}

	/**
	* Sub-class may override behaviour
	* @return true if all available services have been configured
	*/
	public boolean isConfigured() {
	return isConfigured(null, fServiceIDToSelectedProviderID, fProviderIDToProviderMap);
	}

	/**
	* Determine if all service providers have been configured
	* @param project
	* @param serviceIDToSelectedProviderID
	* @param providerIDToProviderMap
	* @return true if all service providers have been configured
	*/
	protected boolean isConfigured(IProject project, Map<String, String> serviceIDToSelectedProviderID, Map<String, IServiceProvider> providerIDToProviderMap) {
	Set<IService> allApplicableServices = getContributedServices(project);
	Iterator<IService> iterator = allApplicableServices.iterator();
	boolean configured = true;
	while (iterator.hasNext()) {
	String providerID = serviceIDToSelectedProviderID.get(iterator.next().getId());
	if (providerID == null)
	return false;
	else {
	IServiceProvider provider = providerIDToProviderMap.get(providerID);
	if (provider == null)
	return false;
	else
	configured = configured && provider.isConfigured();
	}
	}
	return configured;
	}


	/**
	* @return the configuration change listener
	*/
	public Listener getConfigChangeListener() {
	return fConfigChangeListener;
	}

	/**
	* Listens for changes in service provider configuration
	* @param configChangeListener the configuration change listener to set
	*/
	public void setConfigChangeListener(Listener configChangeListener) {
	fConfigChangeListener = configChangeListener;
	}

	/**
	* Enable/disable the configure button in this widget based on the service provider descriptor selected
	* @param enabled
	*/
	protected void updateConfigureButton(IServiceProviderDescriptor descriptor) {
	//no need to configure the null providers so disable the configure button

	if (descriptor.getId().compareTo(NullBuildServiceProvider.ID) == 0 \|\|
	descriptor.getId().compareTo(NullCIndexServiceProvider.ID) == 0)

	fConfigureButton.setEnabled(false);
	else
	fConfigureButton.setEnabled(true);
	}
	}