plugins/org.eclipse.bpel.ui/src/org/eclipse/bpel/ui/wsdl/extensions/BPELPropertyAliasQuerySection.java - bpel/org.eclipse.bpel - Git at Google

 package org.eclipse.bpel.ui.wsdl.extensions;

 import java.util.ArrayList;
 import java.util.List;
 import java.util.StringTokenizer;

 import org.eclipse.bpel.common.ui.details.IDetailsAreaConstants;
 import org.eclipse.bpel.common.ui.details.viewers.CComboViewer;
 import org.eclipse.bpel.common.ui.flatui.FlatFormAttachment;
 import org.eclipse.bpel.common.ui.flatui.FlatFormData;
 import org.eclipse.bpel.common.ui.flatui.FlatFormLayout;
 import org.eclipse.bpel.model.messageproperties.MessagepropertiesFactory;
 import org.eclipse.bpel.model.messageproperties.PropertyAlias;
 import org.eclipse.bpel.model.messageproperties.Query;
 import org.eclipse.bpel.ui.Messages;
 import org.eclipse.bpel.ui.details.providers.ExpressionEditorDescriptorContentProvider;
 import org.eclipse.bpel.ui.details.providers.ExpressionEditorDescriptorLabelProvider;
 import org.eclipse.bpel.ui.details.providers.ModelTreeLabelProvider;
 import org.eclipse.bpel.ui.details.providers.ModelViewerSorter;
 import org.eclipse.bpel.ui.details.tree.ITreeNode;
 import org.eclipse.bpel.ui.extensions.BPELUIRegistry;
 import org.eclipse.bpel.ui.extensions.ExpressionEditorDescriptor;
 import org.eclipse.bpel.ui.properties.BPELPropertySection;
 import org.eclipse.bpel.ui.util.BPELUtil;
 import org.eclipse.jface.util.Assert;
 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.StructuredSelection;
 import org.eclipse.jface.viewers.TreeViewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.CCombo;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.swt.widgets.Tree;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.wst.common.ui.properties.internal.provisional.ISection;
 import org.eclipse.wst.common.ui.properties.internal.provisional.TabbedPropertySheetPage;
 import org.eclipse.xsd.XSDAttributeDeclaration;
 import org.eclipse.xsd.XSDElementDeclaration;
 import org.eclipse.xsd.XSDNamedComponent;

 public class BPELPropertyAliasQuerySection implements ISection,
 		ISelectionChangedListener {

 	public void selectionChanged(SelectionChangedEvent event) {
 		if (((IStructuredSelection) queryLanguageViewer.getSelection())
 				.getFirstElement() instanceof ExpressionEditorDescriptor) {
 			editorAreaComposite.setVisible(true);
 			ExpressionEditorDescriptor desc = (ExpressionEditorDescriptor) ((IStructuredSelection) queryLanguageViewer
 					.getSelection()).getFirstElement();
 			if (palias.getQuery() == null) {
 				Query newQuery = MessagepropertiesFactory.eINSTANCE
 						.createQuery();
 				newQuery.setQueryLanguage(desc.getExpressionLanguage());
 				palias.setQuery(newQuery);
 			} else {
 				palias.getQuery()
 						.setQueryLanguage(desc.getExpressionLanguage());
 			}

 		} else if (NO_QUERY.equals(((IStructuredSelection) queryLanguageViewer
 				.getSelection()).getFirstElement())) {
 			palias.setQuery(null);
 			editorAreaComposite.setVisible(false);
 			query.setText("");
 			referenceViewer.setSelection(StructuredSelection.EMPTY, false);
 			referenceViewer.collapseAll();
 		}
 	}

 	public void refresh() {
 			}

 	protected PropertyAlias palias;

 	protected CCombo queryLanguageCCombo;

 	protected CComboViewer queryLanguageViewer;

 	protected TreeViewer referenceViewer;

 	protected Text query;

 	protected Composite editorAreaComposite, parentComposite;

 	protected TabbedPropertySheetPage page;

 	// Pseudo-model object to represent no expression at all (in which case no
 	// editor
 	// is used).
 	protected static final Object NO_QUERY = new Object();

 	public void aboutToBeHidden() {
 		// TODO Auto-generated method stub

 	}

 	public void aboutToBeShown() {
 		refresh();
 	}

 	public void createControls(Composite parent, TabbedPropertySheetPage page) {
 		FlatFormData data;
 		this.page = page;
 		parentComposite = page.getWidgetFactory().createFlatFormComposite(
 				parent);
 		FlatFormLayout layout = new FlatFormLayout();
 		layout.marginHeight = layout.marginWidth = 0;
 		parentComposite.setLayout(layout);

 		Label queryLanguageLabel = page.getWidgetFactory().createLabel(
 				parentComposite, Messages.BPELPropertyAliasQuerySection_Query_Language);
 		queryLanguageCCombo = page.getWidgetFactory().createCCombo(
 				parentComposite, SWT.FLAT);

 		data = new FlatFormData();
 		data.left = new FlatFormAttachment(0, BPELUtil.calculateLabelWidth(
 				queryLanguageLabel,
 				BPELPropertySection.STANDARD_LABEL_WIDTH_LRG));
 		data.right = new FlatFormAttachment(100, 0);
 		data.top = new FlatFormAttachment(0, 0);
 		queryLanguageCCombo.setLayoutData(data);

 		// Query language combo layout
 		queryLanguageViewer = new CComboViewer(queryLanguageCCombo);

 		queryLanguageViewer
 				.setLabelProvider(new ExpressionEditorDescriptorLabelProvider() {

 					public String getText(Object element) {
 						if (NO_QUERY.equals(element))
 							return "No query";
 						return super.getText(element);
 					}

 				});
 		queryLanguageViewer
 				.setContentProvider(new ExpressionEditorDescriptorContentProvider() {

 					public Object[] getElements(Object inputElement) {
 						Object[] elements = super.getElements(inputElement);
 						List newElements = new ArrayList(elements.length + 1);
 						newElements.add(NO_QUERY);
 						for (int i = 0; i < elements.length; i++) {
 							newElements.add(elements[i]);
 						}
 						return newElements.toArray();
 					}

 				});
 		queryLanguageViewer.setSorter(ModelViewerSorter.getInstance());
 		queryLanguageViewer.addSelectionChangedListener(this);
 		queryLanguageViewer.setInput(new Object());

 		data = new FlatFormData();
 		data.left = new FlatFormAttachment(0, 0);
 		data.right = new FlatFormAttachment(queryLanguageCCombo,
 				-IDetailsAreaConstants.HSPACE);
 		data.top = new FlatFormAttachment(queryLanguageCCombo, 0, SWT.CENTER);
 		queryLanguageLabel.setLayoutData(data);

 		editorAreaComposite = page.getWidgetFactory().createFlatFormComposite(
 				parentComposite);
 		layout = new FlatFormLayout();
 		layout.marginHeight = layout.marginWidth = 0;
 		editorAreaComposite.setLayout(layout);

 		data = new FlatFormData();
 		data.top = new FlatFormAttachment(queryLanguageCCombo,
 				IDetailsAreaConstants.VSPACE);
 		data.left = new FlatFormAttachment(0, 0);
 		data.right = new FlatFormAttachment(100, 0);
 		data.bottom = new FlatFormAttachment(100, 0);
 		editorAreaComposite.setLayoutData(data);

 		Label queryLabel = page.getWidgetFactory().createLabel(
 				editorAreaComposite,
 				Messages.BPELPropertyAliasQuerySection_Query);
 		query = page.getWidgetFactory().createText(editorAreaComposite, "",
 				SWT.READ_ONLY);
 		Tree referenceTree = page.getWidgetFactory().createTree(
 				editorAreaComposite, SWT.BORDER);
 		BPELQueryTreeContentProvider referenceContentProvider = new BPELQueryTreeContentProvider(
 				true);
 		referenceViewer = new TreeViewer(referenceTree);
 		referenceViewer.setContentProvider(referenceContentProvider);
 		referenceViewer.setLabelProvider(new ModelTreeLabelProvider());
 		referenceViewer
 				.addSelectionChangedListener(new ISelectionChangedListener() {
 					public void selectionChanged(SelectionChangedEvent event) {
 						updateQueryFieldFromTreeSelection();
 					}
 				});

 		data = new FlatFormData();
 		data.left = new FlatFormAttachment(0, BPELUtil.calculateLabelWidth(
 				queryLabel, BPELPropertySection.STANDARD_LABEL_WIDTH_LRG));
 		data.right = new FlatFormAttachment(100, -IDetailsAreaConstants.HSPACE);
 		data.bottom = new FlatFormAttachment(100, 0);
 		data.top = new FlatFormAttachment(100, -query.getLineHeight()
 				- IDetailsAreaConstants.VSPACE);
 		query.setLayoutData(data);

 		data = new FlatFormData();
 		data.left = new FlatFormAttachment(0, BPELUtil.calculateLabelWidth(
 				queryLabel, BPELPropertySection.STANDARD_LABEL_WIDTH_LRG));
 		data.right = new FlatFormAttachment(100, 0);
 		data.top = new FlatFormAttachment(queryLanguageCCombo,
 				IDetailsAreaConstants.VSPACE, SWT.BOTTOM);
 		data.bottom = new FlatFormAttachment(query,
 				-IDetailsAreaConstants.VSPACE, SWT.TOP);
 		referenceTree.setLayoutData(data);

 		data = new FlatFormData();
 		data.left = new FlatFormAttachment(0, 0);
 		data.right = new FlatFormAttachment(referenceTree,
 				-IDetailsAreaConstants.HSPACE);
 		data.top = new FlatFormAttachment(referenceTree, 0, SWT.CENTER);
 		queryLabel.setLayoutData(data);
 	}

 	protected void updateQueryFieldFromTreeSelection() {
 		IStructuredSelection sel = (IStructuredSelection) referenceViewer
 				.getSelection();
 		if (palias.getQuery() != null && sel.getFirstElement() != null) {
 			Object[] path = ((BPELQueryTreeContentProvider) referenceViewer
 					.getContentProvider()).getPathToRoot(sel.getFirstElement());
 			String queryText = ""; //$NON-NLS-1$
 			for (int i = 0; i < path.length - 1; i++) {
 				Object modelObject = BPELUtil
 						.resolveXSDObject(((ITreeNode) path[i])
 								.getModelObject());
 				if (modelObject instanceof XSDElementDeclaration
 						|| modelObject instanceof XSDAttributeDeclaration) {
 					String nameSegment = ((XSDNamedComponent) modelObject)
 							.getName();
 					if (nameSegment != null) {
 						if (!queryText.equals("")) { //$NON-NLS-1$
 							queryText = nameSegment + "/" + queryText; //$NON-NLS-1$
 						} else {
 							queryText = nameSegment;
 						}
 					}
 				}
 			}
 			if (queryText.length() > 0) {
 				queryText = "/" + queryText; //$NON-NLS-1$
 				Query newQuery = MessagepropertiesFactory.eINSTANCE
 						.createQuery();
 				newQuery.setQueryLanguage(palias.getQuery().getQueryLanguage());
 				newQuery.setValue(queryText);
 				palias.setQuery(newQuery);
 			} else {
 				Query newQuery = MessagepropertiesFactory.eINSTANCE
 						.createQuery();
 				newQuery.setQueryLanguage(palias.getQuery().getQueryLanguage());
 				palias.setQuery(newQuery);
 			}
 			query.setText(queryText);
 		}

 	}

 	public void dispose() {
 		// TODO Auto-generated method stub

 	}

 	public int getMinimumHeight() {
 		// TODO Auto-generated method stub
 		return SWT.DEFAULT;
 	}

 	public void setInput(IWorkbenchPart arg0, ISelection selection) {
 		Assert.isTrue(selection instanceof IStructuredSelection);
 		palias = (PropertyAlias) ((IStructuredSelection) selection)
 				.getFirstElement();
 		if (palias != null) {
 			referenceViewer.setInput(palias);
 			Object model = NO_QUERY;
 			if (palias.getQuery() != null) {
 				String language = palias.getQuery().getQueryLanguage();
 				if (language != null) {
 					ExpressionEditorDescriptor descriptor = BPELUIRegistry
 							.getInstance().getExpressionEditorDescriptor(
 									language);
 					if (descriptor != null) {
 						model = descriptor;
 					}
 				}
 				editorAreaComposite.setVisible(true);
 				String queryText = palias.getQuery().getValue();

 				if (queryText != null && queryText.length() > 0){
 					Object[] items = ((BPELQueryTreeContentProvider) referenceViewer
 							.getContentProvider()).getElements(palias);
 					ITreeNode node = (ITreeNode)items[0];

 					StringTokenizer tokenizer = new StringTokenizer(queryText,"/");

 					while (tokenizer.hasMoreTokens()){
 						String token = tokenizer.nextToken();

 						Object[] children = ((BPELQueryTreeContentProvider) referenceViewer
 								.getContentProvider()).getChildren(node);

 						for (int  i = 0 ; i < children.length; i++) {
 							Object originalMatch = ((ITreeNode) children[i]).getModelObject();
 							Object match = BPELUtil.resolveXSDObject(originalMatch);
 							if (match instanceof XSDElementDeclaration	|| match instanceof XSDAttributeDeclaration) {
 								if (token.equals(((XSDNamedComponent) match).getName())) {
 									node = (ITreeNode) children[i];
 									break;
 								}
 							}
 						}
 					}
 					referenceViewer.expandToLevel(node, 0);
 					referenceViewer.setSelection(new StructuredSelection(node),
 							true);
 				}
 			} else {
 				editorAreaComposite.setVisible(false);
 				referenceViewer.setSelection(StructuredSelection.EMPTY, false);
 				referenceViewer.collapseAll();
 			}

 			queryLanguageViewer.removeSelectionChangedListener(this);
 			queryLanguageViewer.setSelection(new StructuredSelection(model));
 			queryLanguageViewer.addSelectionChangedListener(this);


 		}


 	}

 	public boolean shouldUseExtraSpace() {
 		// TODO Auto-generated method stub
 		return true;
 	}

 }
	package org.eclipse.bpel.ui.wsdl.extensions;

	import java.util.ArrayList;
	import java.util.List;
	import java.util.StringTokenizer;

	import org.eclipse.bpel.common.ui.details.IDetailsAreaConstants;
	import org.eclipse.bpel.common.ui.details.viewers.CComboViewer;
	import org.eclipse.bpel.common.ui.flatui.FlatFormAttachment;
	import org.eclipse.bpel.common.ui.flatui.FlatFormData;
	import org.eclipse.bpel.common.ui.flatui.FlatFormLayout;
	import org.eclipse.bpel.model.messageproperties.MessagepropertiesFactory;
	import org.eclipse.bpel.model.messageproperties.PropertyAlias;
	import org.eclipse.bpel.model.messageproperties.Query;
	import org.eclipse.bpel.ui.Messages;
	import org.eclipse.bpel.ui.details.providers.ExpressionEditorDescriptorContentProvider;
	import org.eclipse.bpel.ui.details.providers.ExpressionEditorDescriptorLabelProvider;
	import org.eclipse.bpel.ui.details.providers.ModelTreeLabelProvider;
	import org.eclipse.bpel.ui.details.providers.ModelViewerSorter;
	import org.eclipse.bpel.ui.details.tree.ITreeNode;
	import org.eclipse.bpel.ui.extensions.BPELUIRegistry;
	import org.eclipse.bpel.ui.extensions.ExpressionEditorDescriptor;
	import org.eclipse.bpel.ui.properties.BPELPropertySection;
	import org.eclipse.bpel.ui.util.BPELUtil;
	import org.eclipse.jface.util.Assert;
	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.StructuredSelection;
	import org.eclipse.jface.viewers.TreeViewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.CCombo;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.swt.widgets.Tree;
	import org.eclipse.ui.IWorkbenchPart;
	import org.eclipse.wst.common.ui.properties.internal.provisional.ISection;
	import org.eclipse.wst.common.ui.properties.internal.provisional.TabbedPropertySheetPage;
	import org.eclipse.xsd.XSDAttributeDeclaration;
	import org.eclipse.xsd.XSDElementDeclaration;
	import org.eclipse.xsd.XSDNamedComponent;

	public class BPELPropertyAliasQuerySection implements ISection,
	ISelectionChangedListener {

	public void selectionChanged(SelectionChangedEvent event) {
	if (((IStructuredSelection) queryLanguageViewer.getSelection())
	.getFirstElement() instanceof ExpressionEditorDescriptor) {
	editorAreaComposite.setVisible(true);
	ExpressionEditorDescriptor desc = (ExpressionEditorDescriptor) ((IStructuredSelection) queryLanguageViewer
	.getSelection()).getFirstElement();
	if (palias.getQuery() == null) {
	Query newQuery = MessagepropertiesFactory.eINSTANCE
	.createQuery();
	newQuery.setQueryLanguage(desc.getExpressionLanguage());
	palias.setQuery(newQuery);
	} else {
	palias.getQuery()
	.setQueryLanguage(desc.getExpressionLanguage());
	}

	} else if (NO_QUERY.equals(((IStructuredSelection) queryLanguageViewer
	.getSelection()).getFirstElement())) {
	palias.setQuery(null);
	editorAreaComposite.setVisible(false);
	query.setText("");
	referenceViewer.setSelection(StructuredSelection.EMPTY, false);
	referenceViewer.collapseAll();
	}
	}

	public void refresh() {
	}

	protected PropertyAlias palias;

	protected CCombo queryLanguageCCombo;

	protected CComboViewer queryLanguageViewer;

	protected TreeViewer referenceViewer;

	protected Text query;

	protected Composite editorAreaComposite, parentComposite;

	protected TabbedPropertySheetPage page;

	// Pseudo-model object to represent no expression at all (in which case no
	// editor
	// is used).
	protected static final Object NO_QUERY = new Object();

	public void aboutToBeHidden() {
	// TODO Auto-generated method stub

	}

	public void aboutToBeShown() {
	refresh();
	}

	public void createControls(Composite parent, TabbedPropertySheetPage page) {
	FlatFormData data;
	this.page = page;
	parentComposite = page.getWidgetFactory().createFlatFormComposite(
	parent);
	FlatFormLayout layout = new FlatFormLayout();
	layout.marginHeight = layout.marginWidth = 0;
	parentComposite.setLayout(layout);

	Label queryLanguageLabel = page.getWidgetFactory().createLabel(
	parentComposite, Messages.BPELPropertyAliasQuerySection_Query_Language);
	queryLanguageCCombo = page.getWidgetFactory().createCCombo(
	parentComposite, SWT.FLAT);

	data = new FlatFormData();
	data.left = new FlatFormAttachment(0, BPELUtil.calculateLabelWidth(
	queryLanguageLabel,
	BPELPropertySection.STANDARD_LABEL_WIDTH_LRG));
	data.right = new FlatFormAttachment(100, 0);
	data.top = new FlatFormAttachment(0, 0);
	queryLanguageCCombo.setLayoutData(data);

	// Query language combo layout
	queryLanguageViewer = new CComboViewer(queryLanguageCCombo);

	queryLanguageViewer
	.setLabelProvider(new ExpressionEditorDescriptorLabelProvider() {

	public String getText(Object element) {
	if (NO_QUERY.equals(element))
	return "No query";
	return super.getText(element);
	}

	});
	queryLanguageViewer
	.setContentProvider(new ExpressionEditorDescriptorContentProvider() {

	public Object[] getElements(Object inputElement) {
	Object[] elements = super.getElements(inputElement);
	List newElements = new ArrayList(elements.length + 1);
	newElements.add(NO_QUERY);
	for (int i = 0; i < elements.length; i++) {
	newElements.add(elements[i]);
	}
	return newElements.toArray();
	}

	});
	queryLanguageViewer.setSorter(ModelViewerSorter.getInstance());
	queryLanguageViewer.addSelectionChangedListener(this);
	queryLanguageViewer.setInput(new Object());

	data = new FlatFormData();
	data.left = new FlatFormAttachment(0, 0);
	data.right = new FlatFormAttachment(queryLanguageCCombo,
	-IDetailsAreaConstants.HSPACE);
	data.top = new FlatFormAttachment(queryLanguageCCombo, 0, SWT.CENTER);
	queryLanguageLabel.setLayoutData(data);

	editorAreaComposite = page.getWidgetFactory().createFlatFormComposite(
	parentComposite);
	layout = new FlatFormLayout();
	layout.marginHeight = layout.marginWidth = 0;
	editorAreaComposite.setLayout(layout);

	data = new FlatFormData();
	data.top = new FlatFormAttachment(queryLanguageCCombo,
	IDetailsAreaConstants.VSPACE);
	data.left = new FlatFormAttachment(0, 0);
	data.right = new FlatFormAttachment(100, 0);
	data.bottom = new FlatFormAttachment(100, 0);
	editorAreaComposite.setLayoutData(data);

	Label queryLabel = page.getWidgetFactory().createLabel(
	editorAreaComposite,
	Messages.BPELPropertyAliasQuerySection_Query);
	query = page.getWidgetFactory().createText(editorAreaComposite, "",
	SWT.READ_ONLY);
	Tree referenceTree = page.getWidgetFactory().createTree(
	editorAreaComposite, SWT.BORDER);
	BPELQueryTreeContentProvider referenceContentProvider = new BPELQueryTreeContentProvider(
	true);
	referenceViewer = new TreeViewer(referenceTree);
	referenceViewer.setContentProvider(referenceContentProvider);
	referenceViewer.setLabelProvider(new ModelTreeLabelProvider());
	referenceViewer
	.addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	updateQueryFieldFromTreeSelection();
	}
	});

	data = new FlatFormData();
	data.left = new FlatFormAttachment(0, BPELUtil.calculateLabelWidth(
	queryLabel, BPELPropertySection.STANDARD_LABEL_WIDTH_LRG));
	data.right = new FlatFormAttachment(100, -IDetailsAreaConstants.HSPACE);
	data.bottom = new FlatFormAttachment(100, 0);
	data.top = new FlatFormAttachment(100, -query.getLineHeight()
	- IDetailsAreaConstants.VSPACE);
	query.setLayoutData(data);

	data = new FlatFormData();
	data.left = new FlatFormAttachment(0, BPELUtil.calculateLabelWidth(
	queryLabel, BPELPropertySection.STANDARD_LABEL_WIDTH_LRG));
	data.right = new FlatFormAttachment(100, 0);
	data.top = new FlatFormAttachment(queryLanguageCCombo,
	IDetailsAreaConstants.VSPACE, SWT.BOTTOM);
	data.bottom = new FlatFormAttachment(query,
	-IDetailsAreaConstants.VSPACE, SWT.TOP);
	referenceTree.setLayoutData(data);

	data = new FlatFormData();
	data.left = new FlatFormAttachment(0, 0);
	data.right = new FlatFormAttachment(referenceTree,
	-IDetailsAreaConstants.HSPACE);
	data.top = new FlatFormAttachment(referenceTree, 0, SWT.CENTER);
	queryLabel.setLayoutData(data);
	}

	protected void updateQueryFieldFromTreeSelection() {
	IStructuredSelection sel = (IStructuredSelection) referenceViewer
	.getSelection();
	if (palias.getQuery() != null && sel.getFirstElement() != null) {
	Object[] path = ((BPELQueryTreeContentProvider) referenceViewer
	.getContentProvider()).getPathToRoot(sel.getFirstElement());
	String queryText = ""; //$NON-NLS-1$
	for (int i = 0; i < path.length - 1; i++) {
	Object modelObject = BPELUtil
	.resolveXSDObject(((ITreeNode) path[i])
	.getModelObject());
	if (modelObject instanceof XSDElementDeclaration
	\|\| modelObject instanceof XSDAttributeDeclaration) {
	String nameSegment = ((XSDNamedComponent) modelObject)
	.getName();
	if (nameSegment != null) {
	if (!queryText.equals("")) { //$NON-NLS-1$
	queryText = nameSegment + "/" + queryText; //$NON-NLS-1$
	} else {
	queryText = nameSegment;
	}
	}
	}
	}
	if (queryText.length() > 0) {
	queryText = "/" + queryText; //$NON-NLS-1$
	Query newQuery = MessagepropertiesFactory.eINSTANCE
	.createQuery();
	newQuery.setQueryLanguage(palias.getQuery().getQueryLanguage());
	newQuery.setValue(queryText);
	palias.setQuery(newQuery);
	} else {
	Query newQuery = MessagepropertiesFactory.eINSTANCE
	.createQuery();
	newQuery.setQueryLanguage(palias.getQuery().getQueryLanguage());
	palias.setQuery(newQuery);
	}
	query.setText(queryText);
	}

	}

	public void dispose() {
	// TODO Auto-generated method stub

	}

	public int getMinimumHeight() {
	// TODO Auto-generated method stub
	return SWT.DEFAULT;
	}

	public void setInput(IWorkbenchPart arg0, ISelection selection) {
	Assert.isTrue(selection instanceof IStructuredSelection);
	palias = (PropertyAlias) ((IStructuredSelection) selection)
	.getFirstElement();
	if (palias != null) {
	referenceViewer.setInput(palias);
	Object model = NO_QUERY;
	if (palias.getQuery() != null) {
	String language = palias.getQuery().getQueryLanguage();
	if (language != null) {
	ExpressionEditorDescriptor descriptor = BPELUIRegistry
	.getInstance().getExpressionEditorDescriptor(
	language);
	if (descriptor != null) {
	model = descriptor;
	}
	}
	editorAreaComposite.setVisible(true);
	String queryText = palias.getQuery().getValue();

	if (queryText != null && queryText.length() > 0){
	Object[] items = ((BPELQueryTreeContentProvider) referenceViewer
	.getContentProvider()).getElements(palias);
	ITreeNode node = (ITreeNode)items[0];

	StringTokenizer tokenizer = new StringTokenizer(queryText,"/");

	while (tokenizer.hasMoreTokens()){
	String token = tokenizer.nextToken();

	Object[] children = ((BPELQueryTreeContentProvider) referenceViewer
	.getContentProvider()).getChildren(node);

	for (int i = 0 ; i < children.length; i++) {
	Object originalMatch = ((ITreeNode) children[i]).getModelObject();
	Object match = BPELUtil.resolveXSDObject(originalMatch);
	if (match instanceof XSDElementDeclaration \|\| match instanceof XSDAttributeDeclaration) {
	if (token.equals(((XSDNamedComponent) match).getName())) {
	node = (ITreeNode) children[i];
	break;
	}
	}
	}
	}
	referenceViewer.expandToLevel(node, 0);
	referenceViewer.setSelection(new StructuredSelection(node),
	true);
	}
	} else {
	editorAreaComposite.setVisible(false);
	referenceViewer.setSelection(StructuredSelection.EMPTY, false);
	referenceViewer.collapseAll();
	}

	queryLanguageViewer.removeSelectionChangedListener(this);
	queryLanguageViewer.setSelection(new StructuredSelection(model));
	queryLanguageViewer.addSelectionChangedListener(this);


	}


	}

	public boolean shouldUseExtraSpace() {
	// TODO Auto-generated method stub
	return true;
	}

	}