plugins/org.eclipse.bpel.ui/src/org/eclipse/bpel/ui/dialogs/TypeSelectorDialog.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 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.bpel.ui.dialogs;


 import java.util.List;

 import org.eclipse.bpel.model.util.BPELUtils;
 import org.eclipse.bpel.ui.Messages;
 import org.eclipse.bpel.ui.details.providers.CompositeContentProvider;
 import org.eclipse.bpel.ui.details.providers.MessageTypeContentProvider;
 import org.eclipse.bpel.ui.details.providers.ModelLabelProvider;
 import org.eclipse.bpel.ui.details.providers.VariableTypeTreeContentProvider;
 import org.eclipse.bpel.ui.details.providers.XSDSchemaFromResourceContentProvider;
 import org.eclipse.bpel.ui.details.providers.XSDTypeOrElementContentProvider;
 import org.eclipse.bpel.ui.util.ModelHelper;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.ui.dialogs.SelectionDialog;
 import org.eclipse.wst.wsdl.Message;


 /**
  * Browse for data types available and choose that type.
  *
  * In BPEL, types are just an aggregation of "visible" XML schemas. Visible schemas are
  * schemas imported in the BPEL source file via the import construct and schemas
  * present in WSDL files (which are also imported via the import construct).
  *
  * When browsing for types, two modes are supported by this dialog.
  * 1) Browsing types which are already imported (constitute the type system of the process)
  * 2) Browsing for available types. This includes XML types visible to designer.
  *
  * In addition, one can arbitrarily add an import to the process if the XML schema
  * representing the types is somewhere else (URL, outside file, etc).
  *
  * It should be noted, that currently, no attempt is made to resolve duplicate type entries
  * in the schemas. This is not necessarily a bug.
  *
  *  @author Michal Chmielewski (michal.chmielewski@oracle.com)
  *
  */

 public class TypeSelectorDialog extends BrowseSelectorDialog {

 	// https://issues.jboss.org/browse/JBIDE-8045
 	// additional filters for constraining XSD & message type selections
 	final public static int INCLUDE_SIMPLE_TYPES = 0x1;
 	final public static int INCLUDE_COMPLEX_TYPES = 0x2;
 	final public static int INCLUDE_ELEMENT_DECLARATIONS = 0x4;
 	final public static int INCLUDE_PRIMITIVES = 0x8;
 	final public static int INCLUDE_MESSAGE_TYPES = 0x10;
 	final public static int INCLUDE_ALL = 0xff;
 	final public static int INCLUDE_XSD_TYPES = INCLUDE_SIMPLE_TYPES | INCLUDE_COMPLEX_TYPES;

 	/* Button id for complex types */
 	protected final static int BID_COMPLEX_TYPES = IDialogConstants.CLIENT_ID + 100;

 	/* Button id for simple types */
 	protected final static int BID_SIMPLE_TYPES = IDialogConstants.CLIENT_ID + 101;

 	/* Button id for element declarations */
 	protected final static int BID_ELEMENT_DECLARATIONS = IDialogConstants.CLIENT_ID + 102;

 	/* Button id for messages */
 	protected final static int BID_MESSAGES = IDialogConstants.CLIENT_ID + 103;

 	/* Button id for primitives */
 	protected final static int BID_XSD_PRIMITIVES = IDialogConstants.CLIENT_ID + 104;

 	/* Whether messages ought to be shown */
 	protected boolean showMessages = true;


 	protected XSDTypeOrElementContentProvider xsdTypeProvider = new XSDTypeOrElementContentProvider();
 	protected MessageTypeContentProvider messageTypeProvider = new MessageTypeContentProvider();


 	/* Filter types key */
 	private static final String FILTER_TYPES_KEY = "FilterTypes"; //$NON-NLS-1$

 	/* Show messages key in dialog settings */
 	private static final String SHOW_MESSAGES_KEY = "ShowMessages"; //$NON-NLS-1$


 	/* Which types to filter ? */
 	protected int FILTER_TYPES = XSDTypeOrElementContentProvider.INCLUDE_ALL;

 	// https://issues.jboss.org/browse/JBIDE-8045
 	/* Which types to include as selections (checkboxes) in dialog ? */
 	protected int includeTypes = INCLUDE_ALL;

 	// https://jira.jboss.org/browse/JBIDE-7107
 	// set by caller if a selection from the lower tree (typically message parts or XSD elements)
 	// are required before "OK" button can be enabled.
 	protected boolean requireLowerTreeSelection = false;


 	/**
 	 * Create a brand new shiny Type Selector Dialog.
 	 *
 	 * @param parent the parent shell
 	 * @param eObj any BPEL model object
 	 */
 	// https://issues.jboss.org/browse/JBIDE-8045
 	// add filter selection parameter
 	public TypeSelectorDialog (Shell parent, EObject eObj, int filter ) {
 		super(parent, new ModelLabelProvider(eObj));

 		this.includeTypes = filter;
 		this.modelObject = eObj;

 		resourceContentProvider = new XSDSchemaFromResourceContentProvider( modelObject.eResource().getResourceSet() );

 		CompositeContentProvider ccp = new CompositeContentProvider();
 		ccp.add( xsdTypeProvider );
 		ccp.add( messageTypeProvider );
 		contentProvider = ccp;

 		treeContentProvider = new VariableTypeTreeContentProvider (true,true);

 		setTitle(Messages.TypeSelectorDialog_4);
 		setMessage(Messages.TypeSelectorDialog_5);
 		setLowerViewLabel(Messages.TypeSelectorDialog_7);
 		setBrowseFromLabel( Messages.TypeSelectorDialog_9 );

 		// Restore some dialog settings ...
 		IDialogSettings settings = getDialogSettings();
 		try {
 			FILTER_TYPES = settings.getInt(FILTER_TYPES_KEY);
 		} catch (Exception ex) {
 			FILTER_TYPES = XSDTypeOrElementContentProvider.INCLUDE_ALL;
 		}

 		try {
 			showMessages = settings.getBoolean(SHOW_MESSAGES_KEY);
 		} catch (Exception ex) {
 			showMessages = false;
 		}
 	}

 	/**
 	 * Hook a load on the defaults into this dialog upon create.
 	 *
 	 */

 	@Override
 	protected Control createContents(Composite parent) {

 		Control control = super.createContents(parent);

 		// Re-Create the state of the providers from the dialog settings.
 		setProviderFilters();

 		refresh();

 		return control;
 	}


 	@Override
 	protected void saveSettings () {
 		super.saveSettings();
 		IDialogSettings settings = getDialogSettings();
 		settings.put ( FILTER_TYPES_KEY, FILTER_TYPES );
 		settings.put ( SHOW_MESSAGES_KEY, showMessages);
 	}

 	/**
 	 * Handle the check button and radio button callbacks.
 	 *
 	 * @param id
 	 * @param checked
 	 */

 	@Override
 	protected void buttonPressed (int id, boolean checked, boolean bRefresh) {

 		int bits = 0;

 		switch (id) {
 		case BID_SIMPLE_TYPES :
 			bits = XSDTypeOrElementContentProvider.INCLUDE_SIMPLE_TYPES;
 			break;

 		case BID_COMPLEX_TYPES :
 			bits = XSDTypeOrElementContentProvider.INCLUDE_COMPLEX_TYPES;
 			break;

 		case BID_ELEMENT_DECLARATIONS :
 			bits = XSDTypeOrElementContentProvider.INCLUDE_ELEMENT_DECLARATIONS;
 			break;

 		case BID_XSD_PRIMITIVES :
 			bits = XSDTypeOrElementContentProvider.INCLUDE_PRIMITIVES;
 			break;

 		case BID_MESSAGES :
 			showMessages = checked;
 			// https://issues.jboss.org/browse/JBIDE-8075
 			// enable/disable selection of Message objects
 			setProviderFilters();
 			bRefresh = true;
 			break;

 		default :
 			// exit the function here
 			super.buttonPressed(id, checked,bRefresh);
 			return;
 		}


 		// adjust the filter
 		if (bits != 0) {
 			if (checked) {
 				FILTER_TYPES |= bits;
 			} else {
 				FILTER_TYPES &= ~bits;
 			}
 			setProviderFilters();
 		}

 		if (bRefresh) {
 			refresh();
 		}
 	}

 	@Override
 	protected void createButtonsForButtonBar(Composite parent) {
 		createButton(parent,
 				BID_ADD_IMPORT,
 				Messages.TypeSelectorDialog_3,
 				false);
 		super.createButtonsForButtonBar(parent);
 	}

 	@Override
 	protected void createBrowseFilterGroupButtons ( Group  group ) {

         // https://issues.jboss.org/browse/JBIDE-8045
 		if ((includeTypes & INCLUDE_PRIMITIVES) > 0 )
 			createCheckButton(group,Messages.TypeSelectorDialog_14, BID_XSD_PRIMITIVES,
 				(FILTER_TYPES & XSDTypeOrElementContentProvider.INCLUDE_PRIMITIVES) > 0  );
 		if ((includeTypes & INCLUDE_SIMPLE_TYPES) > 0 )
 			createCheckButton(group,Messages.TypeSelectorDialog_15, BID_SIMPLE_TYPES,
 				(FILTER_TYPES &  XSDTypeOrElementContentProvider.INCLUDE_SIMPLE_TYPES) > 0   );
 		if ((includeTypes & INCLUDE_COMPLEX_TYPES) > 0 )
 			createCheckButton(group,Messages.TypeSelectorDialog_16, BID_COMPLEX_TYPES,
 				(FILTER_TYPES &  XSDTypeOrElementContentProvider.INCLUDE_COMPLEX_TYPES ) > 0 );
 		if ((includeTypes & INCLUDE_ELEMENT_DECLARATIONS) > 0 )
 			createCheckButton(group,Messages.TypeSelectorDialog_17, BID_ELEMENT_DECLARATIONS,
 				(FILTER_TYPES &  XSDTypeOrElementContentProvider.INCLUDE_ELEMENT_DECLARATIONS ) > 0 );
 		if ((includeTypes & INCLUDE_MESSAGE_TYPES) > 0 )
 			createCheckButton(group,Messages.TypeSelectorDialog_18, BID_MESSAGES,
 				showMessages);

 		super.createBrowseFilterGroupButtons( group );
 	}


 	@Override
 	protected List collectItemsFromImports() {

 		List list = ModelHelper.getSchemas(modelObject,true);

 		if (showMessages) {
 			list.addAll ( ModelHelper.getDefinitions(modelObject) );
 		}

 		return list;
 	}

 	// https://jira.jboss.org/browse/JBIDE-7107
 	@Override
 	protected void updateOkState() {
 		super.updateOkState();

 		boolean enabled = true;
 		computeResult();
 		Object obj = getFirstResult();
 		// We need to check whether namespace prefix has been already defined
 		if (obj instanceof Message) {
 			if (!checkNamespace((Message) obj)){
 				enabled = false;
 			}
 		}
 		if ( getResult().length<2 && this.requireLowerTreeSelection )
 			enabled = false;

 		if (getOkButton()!=null)
 			getOkButton().setEnabled(enabled);
 	}

 	@Override
 	protected void okPressed() {
 		computeResult();
 		Object obj = getFirstResult();
 		// We need to check whether namespace prefix has been already defined
 		if (obj instanceof Message) {
 			if (!checkNamespace((Message) obj)){
 				return;
 			}
 		}
 		if ( getResult().length<2 && this.requireLowerTreeSelection )
 			return;
 		super.okPressed();
 	}

 	private boolean checkNamespace(Message message) {
 		String targetNamespace = message.getQName().getNamespaceURI();
 		String prefix = BPELUtils.getNamespacePrefix (modelObject, targetNamespace);
 		if (prefix != null) {
 			return true;
 		}
 		// We have to map the namespace to a prefix.
 		NamespaceMappingDialog dialog = new NamespaceMappingDialog(getShell(),modelObject);
 		dialog.setNamespace( targetNamespace );

 		if (dialog.open() == Window.CANCEL) {
 			return false;
 		}

 		// define the prefix
 		BPELUtils.setPrefix( BPELUtils.getProcess(modelObject), targetNamespace, dialog.getPrefix());
 		return true;
 	}


 	/**
 	 * https://issues.jboss.org/browse/JBIDE-8045
 	 * Enable or disable lower tree selection required flag (see this.requireLowerTreeSelection)
 	 *
 	 * @param enabled
 	 */
 	public void setRequireLowerTreeSelection(boolean enabled)
 	{
 		this.requireLowerTreeSelection = enabled;
 	}

 	// https://issues.jboss.org/browse/JBIDE-8045
 	public void setIncludeTypes(int includeTypes) {
 		this.includeTypes = includeTypes;
 	}

 	// https://issues.jboss.org/browse/JBIDE-8045
 	// update the provider filters for only those types selected and available
 	private void setProviderFilters() {

 		xsdTypeProvider.setFilter( FILTER_TYPES & includeTypes );

 		// https://issues.jboss.org/browse/JBIDE-8075
 		// enable/disable selection of Message objects
 		if ( (includeTypes & INCLUDE_MESSAGE_TYPES) > 0 ) {
 			messageTypeProvider.setFilter( showMessages ? 1 : 0 );
 		}
 		else {
 			messageTypeProvider.setFilter( 0 );
 		}
 	}
 }
	/*******************************************************************************
	* 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 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.bpel.ui.dialogs;


	import java.util.List;

	import org.eclipse.bpel.model.util.BPELUtils;
	import org.eclipse.bpel.ui.Messages;
	import org.eclipse.bpel.ui.details.providers.CompositeContentProvider;
	import org.eclipse.bpel.ui.details.providers.MessageTypeContentProvider;
	import org.eclipse.bpel.ui.details.providers.ModelLabelProvider;
	import org.eclipse.bpel.ui.details.providers.VariableTypeTreeContentProvider;
	import org.eclipse.bpel.ui.details.providers.XSDSchemaFromResourceContentProvider;
	import org.eclipse.bpel.ui.details.providers.XSDTypeOrElementContentProvider;
	import org.eclipse.bpel.ui.util.ModelHelper;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.window.Window;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.ui.dialogs.SelectionDialog;
	import org.eclipse.wst.wsdl.Message;


	/**
	* Browse for data types available and choose that type.
	*
	* In BPEL, types are just an aggregation of "visible" XML schemas. Visible schemas are
	* schemas imported in the BPEL source file via the import construct and schemas
	* present in WSDL files (which are also imported via the import construct).
	*
	* When browsing for types, two modes are supported by this dialog.
	* 1) Browsing types which are already imported (constitute the type system of the process)
	* 2) Browsing for available types. This includes XML types visible to designer.
	*
	* In addition, one can arbitrarily add an import to the process if the XML schema
	* representing the types is somewhere else (URL, outside file, etc).
	*
	* It should be noted, that currently, no attempt is made to resolve duplicate type entries
	* in the schemas. This is not necessarily a bug.
	*
	* @author Michal Chmielewski (michal.chmielewski@oracle.com)
	*
	*/

	public class TypeSelectorDialog extends BrowseSelectorDialog {

	// https://issues.jboss.org/browse/JBIDE-8045
	// additional filters for constraining XSD & message type selections
	final public static int INCLUDE_SIMPLE_TYPES = 0x1;
	final public static int INCLUDE_COMPLEX_TYPES = 0x2;
	final public static int INCLUDE_ELEMENT_DECLARATIONS = 0x4;
	final public static int INCLUDE_PRIMITIVES = 0x8;
	final public static int INCLUDE_MESSAGE_TYPES = 0x10;
	final public static int INCLUDE_ALL = 0xff;
	final public static int INCLUDE_XSD_TYPES = INCLUDE_SIMPLE_TYPES \| INCLUDE_COMPLEX_TYPES;

	/* Button id for complex types */
	protected final static int BID_COMPLEX_TYPES = IDialogConstants.CLIENT_ID + 100;

	/* Button id for simple types */
	protected final static int BID_SIMPLE_TYPES = IDialogConstants.CLIENT_ID + 101;

	/* Button id for element declarations */
	protected final static int BID_ELEMENT_DECLARATIONS = IDialogConstants.CLIENT_ID + 102;

	/* Button id for messages */
	protected final static int BID_MESSAGES = IDialogConstants.CLIENT_ID + 103;

	/* Button id for primitives */
	protected final static int BID_XSD_PRIMITIVES = IDialogConstants.CLIENT_ID + 104;

	/* Whether messages ought to be shown */
	protected boolean showMessages = true;


	protected XSDTypeOrElementContentProvider xsdTypeProvider = new XSDTypeOrElementContentProvider();
	protected MessageTypeContentProvider messageTypeProvider = new MessageTypeContentProvider();


	/* Filter types key */
	private static final String FILTER_TYPES_KEY = "FilterTypes"; //$NON-NLS-1$

	/* Show messages key in dialog settings */
	private static final String SHOW_MESSAGES_KEY = "ShowMessages"; //$NON-NLS-1$


	/* Which types to filter ? */
	protected int FILTER_TYPES = XSDTypeOrElementContentProvider.INCLUDE_ALL;

	// https://issues.jboss.org/browse/JBIDE-8045
	/* Which types to include as selections (checkboxes) in dialog ? */
	protected int includeTypes = INCLUDE_ALL;

	// https://jira.jboss.org/browse/JBIDE-7107
	// set by caller if a selection from the lower tree (typically message parts or XSD elements)
	// are required before "OK" button can be enabled.
	protected boolean requireLowerTreeSelection = false;


	/**
	* Create a brand new shiny Type Selector Dialog.
	*
	* @param parent the parent shell
	* @param eObj any BPEL model object
	*/
	// https://issues.jboss.org/browse/JBIDE-8045
	// add filter selection parameter
	public TypeSelectorDialog (Shell parent, EObject eObj, int filter ) {
	super(parent, new ModelLabelProvider(eObj));

	this.includeTypes = filter;
	this.modelObject = eObj;

	resourceContentProvider = new XSDSchemaFromResourceContentProvider( modelObject.eResource().getResourceSet() );

	CompositeContentProvider ccp = new CompositeContentProvider();
	ccp.add( xsdTypeProvider );
	ccp.add( messageTypeProvider );
	contentProvider = ccp;

	treeContentProvider = new VariableTypeTreeContentProvider (true,true);

	setTitle(Messages.TypeSelectorDialog_4);
	setMessage(Messages.TypeSelectorDialog_5);
	setLowerViewLabel(Messages.TypeSelectorDialog_7);
	setBrowseFromLabel( Messages.TypeSelectorDialog_9 );

	// Restore some dialog settings ...
	IDialogSettings settings = getDialogSettings();
	try {
	FILTER_TYPES = settings.getInt(FILTER_TYPES_KEY);
	} catch (Exception ex) {
	FILTER_TYPES = XSDTypeOrElementContentProvider.INCLUDE_ALL;
	}

	try {
	showMessages = settings.getBoolean(SHOW_MESSAGES_KEY);
	} catch (Exception ex) {
	showMessages = false;
	}
	}

	/**
	* Hook a load on the defaults into this dialog upon create.
	*
	*/

	@Override
	protected Control createContents(Composite parent) {

	Control control = super.createContents(parent);

	// Re-Create the state of the providers from the dialog settings.
	setProviderFilters();

	refresh();

	return control;
	}



	@Override
	protected void saveSettings () {
	super.saveSettings();
	IDialogSettings settings = getDialogSettings();
	settings.put ( FILTER_TYPES_KEY, FILTER_TYPES );
	settings.put ( SHOW_MESSAGES_KEY, showMessages);
	}

	/**
	* Handle the check button and radio button callbacks.
	*
	* @param id
	* @param checked
	*/

	@Override
	protected void buttonPressed (int id, boolean checked, boolean bRefresh) {

	int bits = 0;

	switch (id) {
	case BID_SIMPLE_TYPES :
	bits = XSDTypeOrElementContentProvider.INCLUDE_SIMPLE_TYPES;
	break;

	case BID_COMPLEX_TYPES :
	bits = XSDTypeOrElementContentProvider.INCLUDE_COMPLEX_TYPES;
	break;

	case BID_ELEMENT_DECLARATIONS :
	bits = XSDTypeOrElementContentProvider.INCLUDE_ELEMENT_DECLARATIONS;
	break;

	case BID_XSD_PRIMITIVES :
	bits = XSDTypeOrElementContentProvider.INCLUDE_PRIMITIVES;
	break;

	case BID_MESSAGES :
	showMessages = checked;
	// https://issues.jboss.org/browse/JBIDE-8075
	// enable/disable selection of Message objects
	setProviderFilters();
	bRefresh = true;
	break;

	default :
	// exit the function here
	super.buttonPressed(id, checked,bRefresh);
	return;
	}


	// adjust the filter
	if (bits != 0) {
	if (checked) {
	FILTER_TYPES \|= bits;
	} else {
	FILTER_TYPES &= ~bits;
	}
	setProviderFilters();
	}

	if (bRefresh) {
	refresh();
	}
	}

	@Override
	protected void createButtonsForButtonBar(Composite parent) {
	createButton(parent,
	BID_ADD_IMPORT,
	Messages.TypeSelectorDialog_3,
	false);
	super.createButtonsForButtonBar(parent);
	}

	@Override
	protected void createBrowseFilterGroupButtons ( Group group ) {

	// https://issues.jboss.org/browse/JBIDE-8045
	if ((includeTypes & INCLUDE_PRIMITIVES) > 0 )
	createCheckButton(group,Messages.TypeSelectorDialog_14, BID_XSD_PRIMITIVES,
	(FILTER_TYPES & XSDTypeOrElementContentProvider.INCLUDE_PRIMITIVES) > 0 );
	if ((includeTypes & INCLUDE_SIMPLE_TYPES) > 0 )
	createCheckButton(group,Messages.TypeSelectorDialog_15, BID_SIMPLE_TYPES,
	(FILTER_TYPES & XSDTypeOrElementContentProvider.INCLUDE_SIMPLE_TYPES) > 0 );
	if ((includeTypes & INCLUDE_COMPLEX_TYPES) > 0 )
	createCheckButton(group,Messages.TypeSelectorDialog_16, BID_COMPLEX_TYPES,
	(FILTER_TYPES & XSDTypeOrElementContentProvider.INCLUDE_COMPLEX_TYPES ) > 0 );
	if ((includeTypes & INCLUDE_ELEMENT_DECLARATIONS) > 0 )
	createCheckButton(group,Messages.TypeSelectorDialog_17, BID_ELEMENT_DECLARATIONS,
	(FILTER_TYPES & XSDTypeOrElementContentProvider.INCLUDE_ELEMENT_DECLARATIONS ) > 0 );
	if ((includeTypes & INCLUDE_MESSAGE_TYPES) > 0 )
	createCheckButton(group,Messages.TypeSelectorDialog_18, BID_MESSAGES,
	showMessages);

	super.createBrowseFilterGroupButtons( group );
	}



	@Override
	protected List collectItemsFromImports() {

	List list = ModelHelper.getSchemas(modelObject,true);

	if (showMessages) {
	list.addAll ( ModelHelper.getDefinitions(modelObject) );
	}

	return list;
	}

	// https://jira.jboss.org/browse/JBIDE-7107
	@Override
	protected void updateOkState() {
	super.updateOkState();

	boolean enabled = true;
	computeResult();
	Object obj = getFirstResult();
	// We need to check whether namespace prefix has been already defined
	if (obj instanceof Message) {
	if (!checkNamespace((Message) obj)){
	enabled = false;
	}
	}
	if ( getResult().length<2 && this.requireLowerTreeSelection )
	enabled = false;

	if (getOkButton()!=null)
	getOkButton().setEnabled(enabled);
	}

	@Override
	protected void okPressed() {
	computeResult();
	Object obj = getFirstResult();
	// We need to check whether namespace prefix has been already defined
	if (obj instanceof Message) {
	if (!checkNamespace((Message) obj)){
	return;
	}
	}
	if ( getResult().length<2 && this.requireLowerTreeSelection )
	return;
	super.okPressed();
	}

	private boolean checkNamespace(Message message) {
	String targetNamespace = message.getQName().getNamespaceURI();
	String prefix = BPELUtils.getNamespacePrefix (modelObject, targetNamespace);
	if (prefix != null) {
	return true;
	}
	// We have to map the namespace to a prefix.
	NamespaceMappingDialog dialog = new NamespaceMappingDialog(getShell(),modelObject);
	dialog.setNamespace( targetNamespace );

	if (dialog.open() == Window.CANCEL) {
	return false;
	}

	// define the prefix
	BPELUtils.setPrefix( BPELUtils.getProcess(modelObject), targetNamespace, dialog.getPrefix());
	return true;
	}


	/**
	* https://issues.jboss.org/browse/JBIDE-8045
	* Enable or disable lower tree selection required flag (see this.requireLowerTreeSelection)
	*
	* @param enabled
	*/
	public void setRequireLowerTreeSelection(boolean enabled)
	{
	this.requireLowerTreeSelection = enabled;
	}

	// https://issues.jboss.org/browse/JBIDE-8045
	public void setIncludeTypes(int includeTypes) {
	this.includeTypes = includeTypes;
	}

	// https://issues.jboss.org/browse/JBIDE-8045
	// update the provider filters for only those types selected and available
	private void setProviderFilters() {

	xsdTypeProvider.setFilter( FILTER_TYPES & includeTypes );

	// https://issues.jboss.org/browse/JBIDE-8075
	// enable/disable selection of Message objects
	if ( (includeTypes & INCLUDE_MESSAGE_TYPES) > 0 ) {
	messageTypeProvider.setFilter( showMessages ? 1 : 0 );
	}
	else {
	messageTypeProvider.setFilter( 0 );
	}
	}
	}