jpa/plugins/org.eclipse.jpt.jaxb.ui/src/org/eclipse/jpt/jaxb/ui/internal/wizards/ClassesGeneratorWizardPage.java - dali/webtools.dali - Git at Google

 /*******************************************************************************
 * Copyright (c) 2010 Oracle. 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:
 *     Oracle - initial API and implementation
 *******************************************************************************/
 package org.eclipse.jpt.jaxb.ui.internal.wizards;

 import java.util.ArrayList;
 import java.util.Collection;

 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.jdt.core.IPackageFragment;
 import org.eclipse.jdt.core.IType;
 import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jdt.ui.wizards.NewTypeWizardPage;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.viewers.ColumnWeightData;
 import org.eclipse.jface.viewers.IBaseLabelProvider;
 import org.eclipse.jface.viewers.IContentProvider;
 import org.eclipse.jface.viewers.IStructuredContentProvider;
 import org.eclipse.jface.viewers.ITableLabelProvider;
 import org.eclipse.jface.viewers.LabelProvider;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jpt.core.JpaProject;
 import org.eclipse.jpt.jaxb.core.internal.ClassesGenerator;
 import org.eclipse.jpt.jaxb.ui.internal.JptJaxbUiMessages;
 import org.eclipse.jpt.ui.internal.util.SWTUtil;
 import org.eclipse.jpt.ui.internal.util.TableLayoutComposite;
 import org.eclipse.jpt.utility.internal.ArrayTools;
 import org.eclipse.jpt.utility.internal.StringTools;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.graphics.Image;
 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.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.Text;
 import org.osgi.framework.Bundle;

 /**
  *  ClassesGeneratorWizardPage
  */
 public class ClassesGeneratorWizardPage extends NewTypeWizardPage {
 	static public String JPT_JAXB_ECLIPSELINK_UI_PLUGIN_ID = "org.eclipse.jpt.eclipselink.jaxb.ui";   //$NON-NLS-1$

 	private final JpaProject jpaProject;

 	private SettingsGroup settingsGroup;

 	private String targetFolder;
 	private String targetPackage;

 	private Button usesMoxyCheckBox;
 	private boolean usesMoxy;

 	// ********** constructor **********

 	public ClassesGeneratorWizardPage(JpaProject jpaProject, String xmlSchemaName) {
 		super(true, "Classes Generator"); //$NON-NLS-1$
 		if (jpaProject == null) {
 			throw new NullPointerException();
 		}
 		this.jpaProject = jpaProject;
 		// default usesMoxy to true only when JPT EclipseLink bundle exists and MOXy is on the classpath
 		this.usesMoxy = (jptEclipseLinkJaxbBundleExists() && moxyIsOnClasspath());

 		this.setTitle(NLS.bind(JptJaxbUiMessages.ClassesGeneratorWizardPage_title, xmlSchemaName));
 		this.setDescription(JptJaxbUiMessages.ClassesGeneratorWizardPage_desc);
 	}

 	// ********** UI components **********

 	public void createControl(Composite parent) {
 		this.setPageComplete(false);
 		this.setControl(this.buildTopLevelControl(parent));

 		initContainerPage(this.jpaProject.getJavaProject());
 	}

 	private Control buildTopLevelControl(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NULL);
 		composite.setLayout(new GridLayout());

 		this.settingsGroup = new SettingsGroup(composite);

 		// add checkbox only if jpt.eclipselink.jaxb plugin is available
 		// and EclipseLink MOXy is not on the classpath
 		if(jptEclipseLinkJaxbBundleExists() && ! moxyIsOnClasspath()) {
 			this.usesMoxyCheckBox = this.buildUsesMoxyCheckBox(composite);
 		}

 		Dialog.applyDialogFont(parent);
 		return composite;
 	}

 	private Button buildUsesMoxyCheckBox(Composite parent) {

 		 Button checkBox = new Button(parent, SWT.CHECK);
 		checkBox.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_usesMoxyImplementation);
 		checkBox.setSelection(this.usesMoxy());
 		checkBox.addSelectionListener(this.buildUsesMoxySelectionListener());

 		return checkBox;
 	}

 	private SelectionListener buildUsesMoxySelectionListener() {
 		return new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent event) {
 				this.widgetSelected(event);
 			}

 			public void widgetSelected(SelectionEvent event) {
 				setUsesMoxy(usesMoxyCheckBox.getSelection());
 				validateProjectClasspath();
 			}
 		};
 	}

 	// ********** intra-wizard methods **********

 	protected String getTargetFolder() {
 		return this.targetFolder;
 	}

 	protected String getTargetPackage() {
 		return this.targetPackage;
 	}

 	protected String getCatalog() {
 		return this.settingsGroup.getCatalog();
 	}

 	protected String[] getBindingsFileNames() {
 		return this.settingsGroup.getBindingsFileNames();
 	}

 	protected Boolean usesMoxy() {
 		return this.usesMoxy;
 	}

 	protected void setUsesMoxy(boolean usesMoxy){
 		this.usesMoxy = usesMoxy;
 	}

 	// ********** internal methods **********

 	private boolean jptEclipseLinkJaxbBundleExists() {
 		return (this.getJptEclipseLinkJaxbBundle() != null);
 	}

 	private Bundle getJptEclipseLinkJaxbBundle() {
 		return Platform.getBundle(JPT_JAXB_ECLIPSELINK_UI_PLUGIN_ID);	// Cannot reference directly EL plugin.
 	}

 	private void validateProjectClasspath() {
 		//this line will suppress the "default package" warning (which doesn't really apply here
 		//as the JAXB gen uses an org.example.schemaName package by default) and will clear the classpath warnings when necessary
 		setMessage(null);

 		if ( ! this.genericJaxbIsOnClasspath()) {
 			this.displayWarning(JptJaxbUiMessages.ClassesGeneratorWizardPage_jaxbLibrariesNotAvailable);
 		}
 		else if (this.usesMoxy() && ! this.moxyIsOnClasspath()) {
 			//this message is being truncated by the wizard width in some cases
 			this.displayWarning(JptJaxbUiMessages.ClassesGeneratorWizardPage_moxyLibrariesNotAvailable);
 		}

 		//this code will intelligently remove our classpath warnings when they are present but no longer apply (as an alternative
 		//to setting the message to null continuously as is currently done)
 //		else if( this.getMessage() != null){
 //			if (this.getMessage().equals(JptJaxbUiMessages.ClassesGeneratorWizardPage_jaxbLibrariesNotAvailable) ||
 //					this.getMessage().equals(JptJaxbUiMessages.ClassesGeneratorWizardPage_moxyLibrariesNotAvailable)) {
 //				setMessage(null);
 //			}
 //		}
 	}

 	private void displayWarning(String message) {
 		this.setMessage(message, WARNING);
 	}

 	/**
 	 * Test if the Jaxb compiler is on the classpath.
 	 */
 	private boolean genericJaxbIsOnClasspath() {
 		try {
 			String className = ClassesGenerator.JAXB_GENERIC_GEN_CLASS;
 			IType genClass = this.jpaProject.getJavaProject().findType(className);
 			return (genClass != null);
 		}
 		catch (JavaModelException e) {
 			throw new RuntimeException(e);
 		}
 	}
 	/**
 	 * Test if the EclipseLink Jaxb compiler is on the classpath.
 	 */
 	private boolean moxyIsOnClasspath() {
 		try {
 			String className = ClassesGenerator.JAXB_ECLIPSELINK_GEN_CLASS;
 			IType genClass = this.jpaProject.getJavaProject().findType(className);
 			return (genClass != null);
 		}
 		catch (JavaModelException e) {
 			throw new RuntimeException(e);
 		}
 	}

 	// ********** overrides **********


 	@Override
 	protected IStatus packageChanged() {
 		IStatus status = super.packageChanged();
 		IPackageFragment packageFragment = getPackageFragment();
 		if (!status.matches(IStatus.ERROR)) {
 			this.targetPackage = packageFragment.getElementName();
 		}
 		return status;
 	}

 	@Override
 	protected IStatus containerChanged() {
 		IStatus status = super.containerChanged();
 		String srcFolder = getPackageFragmentRootText();
 		if( !status.matches(IStatus.ERROR) ){
 				this.targetFolder = srcFolder.substring(srcFolder.indexOf("/") + 1);
 		}
 		return status;
 	}

 	@Override
 	protected void handleFieldChanged(String fieldName) {
 		super.handleFieldChanged(fieldName);
 		if (this.fContainerStatus.matches(IStatus.ERROR)) {
 			updateStatus(fContainerStatus);
 		}else if( ! this.fPackageStatus.matches(IStatus.OK) ) {
 			updateStatus(fPackageStatus);
 		} else {
 			updateStatus(Status.OK_STATUS);
 		}
 		validateProjectClasspath();
 	}

 	/**
 	 * Override setVisible to insure that our more important warning
 	 * message about classpath problems is displayed to the user first.
 	 */
 	@Override
 	public void setVisible(boolean visible) {
 		super.setVisible(visible);
 		validateProjectClasspath();
 	}

     @Override
     public final void performHelp() {
         //TODO We need a help ID for JAXB Generation
     }

 	// ********** SettingsGroup class **********

 	private class SettingsGroup {

 		private final Text catalogText;

 		private final ArrayList<String> bindingsFileNames;

 		// ********** constructor **********

 		private SettingsGroup(Composite composite) {
 			super();
 			Group group = new Group(composite, SWT.NONE);
 			group.setLayout(new GridLayout(4, false));  // false = do not make columns equal width
 			group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 			group.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_settingsGroupTitle);
 			// TODO PlatformUI.getWorkbench().getHelpSystem().setHelp(this.group, JpaHelpContextIds.XXX);

 			// Source folder
 			createContainerControls(group, 4);

 			// Package
 			createPackageControls(group, 4);

 			// Catalog
 			this.buildLabel(group, 1, JptJaxbUiMessages.ClassesGeneratorWizardPage_catalog);
 			this.catalogText = this.buildText(group);

 			// Bindings files
 			this.bindingsFileNames = new ArrayList<String>();
 			this.buildLabel(group, 1, JptJaxbUiMessages.ClassesGeneratorWizardPage_bindingsFiles);
 			this.buildBindingsFileTable(group);
 		}

 		// ********** intra-wizard methods **********

 		protected String getCatalog() {
 			return this.catalogText.getText();
 		}

 		protected String[] getBindingsFileNames() {
 			return ArrayTools.array(this.bindingsFileNames.iterator(), new String[0]);
 		}

 		// ********** UI components **********

 		private Label buildLabel(Composite parent, int span, String text) {
 			Label label = new Label(parent, SWT.NONE);
 			label.setText(text);
 			GridData gd = new GridData();
 			gd.horizontalSpan = span;
 			label.setLayoutData(gd);
 			return label;
 		}

 		private Text buildText(Composite parent) {

 			Text text = new Text(parent, SWT.BORDER);
 			text.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 			//Filler columns
 			new Label(parent, SWT.NONE);
 			new Label(parent, SWT.NONE);
 			return text;
 		}

 		private TableViewer buildBindingsFileTable(Composite parent) {

 			TableViewer tableViewer = this.buildTableViewer(parent, this.bindingsFileNames);

 			this.buildAddRemoveButtons(parent, tableViewer, this.bindingsFileNames);
 			return tableViewer;
 		}

 		private TableViewer buildTableViewer(Composite parent, ArrayList<String> tableDataModel) {

 			TableLayoutComposite tableLayout = new TableLayoutComposite(parent, SWT.NONE);
 			this.addColumnsData(tableLayout);

 			final Table table = new Table(tableLayout, SWT.H_SCROLL | SWT.V_SCROLL | SWT.SINGLE | SWT.FULL_SELECTION | SWT.BORDER);
 			table.setLinesVisible(false);

 			TableColumn column = new TableColumn(table, SWT.NONE, 0);
 			column.setResizable(true);

 			GridData gridData= new GridData(GridData.FILL_BOTH);
 			gridData.heightHint= SWTUtil.getTableHeightHint(table, 3);
 			gridData.widthHint = 300;
 			tableLayout.setLayoutData(gridData);

 			TableViewer tableViewer = new TableViewer(table);
 			tableViewer.setUseHashlookup(true);
 			tableViewer.setLabelProvider(this.buildLabelProvider());
 			tableViewer.setContentProvider(this.buildContentProvider());

 			tableViewer.setInput(tableDataModel);
 			return tableViewer;
 		}

 		private void buildAddRemoveButtons(Composite parent, final TableViewer tableViewer, final ArrayList<String> tableDataModel) {

 			Composite buttonComposite = new Composite(parent, SWT.NULL);
 			GridLayout buttonLayout = new GridLayout(1, false);
 			buttonComposite.setLayout(buttonLayout);
 			GridData gridData =  new GridData();
 			gridData.horizontalAlignment = GridData.FILL;
 			gridData.verticalAlignment = GridData.BEGINNING;
 			buttonComposite.setLayoutData(gridData);
 			// Add buttons
 			Button addButton = new Button(buttonComposite, SWT.PUSH);
 			addButton.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_addButton);
 			gridData =  new GridData();
 			gridData.horizontalAlignment = GridData.FILL;
 			addButton.setLayoutData(gridData);
 			addButton.addSelectionListener(new SelectionListener() {
 				public void widgetDefaultSelected(SelectionEvent e) {}

 				public void widgetSelected(SelectionEvent e) {

 					String fileName = promptFile();
 					if( ! StringTools.stringIsEmpty(fileName)) {

 						tableDataModel.add(makeRelativeToProjectPath(fileName));
 						tableViewer.refresh();
 					}
 				}
 			});
 			// Remove buttons
 			Button removeButton = new Button(buttonComposite, SWT.PUSH);
 			removeButton.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_removeButton);
 			gridData =  new GridData();
 			gridData.horizontalAlignment = GridData.FILL;
 			removeButton.setLayoutData(gridData);
 			removeButton.addSelectionListener(new SelectionListener() {
 				public void widgetDefaultSelected(SelectionEvent e) {}

 				public void widgetSelected(SelectionEvent e) {
 					StructuredSelection selection = (StructuredSelection)tableViewer.getSelection();
 					if(selection.isEmpty()) {
 						return;
 					}
 					String bindingsFileName = (String)selection.getFirstElement();
 					removeBindingsFileName(bindingsFileName);

 					tableViewer.refresh();
 				}
 			});
 			addButton.setFocus();
 		}

 		// ********** internal methods **********

 		private String makeRelativeToProjectPath(String filePath) {
 			Path path = new Path(filePath);
 			IPath relativePath = path.makeRelativeTo(jpaProject.getProject().getLocation());
 			return relativePath.toOSString();
 		}

 		private void removeBindingsFileName(String bindingsName) {
 			String name = this.getBindingsFileName(bindingsName);
 			this.bindingsFileNames.remove(name);
 		}

 		private String getBindingsFileName(String bindingsName) {
 			for(String name: this.bindingsFileNames) {
 				if(name.equals(bindingsName)) {
 					return name;
 				}
 			}
 			return null;
 		}

 		private IBaseLabelProvider buildLabelProvider() {
 			return new TableLabelProvider();
 		}

 		private IContentProvider buildContentProvider() {
 			return new TableContentProvider();
 		}

 		/**
 		 * The Add button was clicked, its action invokes this action which should
 		 * prompt the user to select a file and return it.
 		 */
 		private String promptFile() {
 			String projectPath= jpaProject.getProject().getLocation().toString();

 			FileDialog dialog = new FileDialog(getShell());
 			dialog.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_chooseABindingsFile);
 			dialog.setFilterPath(projectPath);
 			dialog.setFilterExtensions(new String[] {"*.xjb"});   //$NON-NLS-1$
 			String filePath = dialog.open();

 			return (filePath != null) ? filePath : null;
 		}

 		private void addColumnsData(TableLayoutComposite layout) {
 			layout.addColumnData(new ColumnWeightData(50, true));
 		}

 	}

 	// ********** inner class **********
 	private class TableLabelProvider extends LabelProvider implements ITableLabelProvider {

 		public Image getColumnImage(Object element, int columnIndex) {
 			return null;
 		}

 		public String getColumnText(Object element, int columnIndex) {
 			return (String)element;
 		}
 	}

 	private class TableContentProvider implements IStructuredContentProvider {

 		TableContentProvider() {
 			super();
 		}

 		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}

 		public void dispose() {}

 		public Object[] getElements(Object inputElement) {
 			return ((Collection<?>) inputElement).toArray();
 		}
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2010 Oracle. 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:
	* Oracle - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jpt.jaxb.ui.internal.wizards;

	import java.util.ArrayList;
	import java.util.Collection;

	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.jdt.core.IPackageFragment;
	import org.eclipse.jdt.core.IType;
	import org.eclipse.jdt.core.JavaModelException;
	import org.eclipse.jdt.ui.wizards.NewTypeWizardPage;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.viewers.ColumnWeightData;
	import org.eclipse.jface.viewers.IBaseLabelProvider;
	import org.eclipse.jface.viewers.IContentProvider;
	import org.eclipse.jface.viewers.IStructuredContentProvider;
	import org.eclipse.jface.viewers.ITableLabelProvider;
	import org.eclipse.jface.viewers.LabelProvider;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jpt.core.JpaProject;
	import org.eclipse.jpt.jaxb.core.internal.ClassesGenerator;
	import org.eclipse.jpt.jaxb.ui.internal.JptJaxbUiMessages;
	import org.eclipse.jpt.ui.internal.util.SWTUtil;
	import org.eclipse.jpt.ui.internal.util.TableLayoutComposite;
	import org.eclipse.jpt.utility.internal.ArrayTools;
	import org.eclipse.jpt.utility.internal.StringTools;
	import org.eclipse.osgi.util.NLS;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.graphics.Image;
	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.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.swt.widgets.Text;
	import org.osgi.framework.Bundle;

	/**
	* ClassesGeneratorWizardPage
	*/
	public class ClassesGeneratorWizardPage extends NewTypeWizardPage {
	static public String JPT_JAXB_ECLIPSELINK_UI_PLUGIN_ID = "org.eclipse.jpt.eclipselink.jaxb.ui"; //$NON-NLS-1$

	private final JpaProject jpaProject;

	private SettingsGroup settingsGroup;

	private String targetFolder;
	private String targetPackage;

	private Button usesMoxyCheckBox;
	private boolean usesMoxy;

	// ******** constructor ********

	public ClassesGeneratorWizardPage(JpaProject jpaProject, String xmlSchemaName) {
	super(true, "Classes Generator"); //$NON-NLS-1$
	if (jpaProject == null) {
	throw new NullPointerException();
	}
	this.jpaProject = jpaProject;
	// default usesMoxy to true only when JPT EclipseLink bundle exists and MOXy is on the classpath
	this.usesMoxy = (jptEclipseLinkJaxbBundleExists() && moxyIsOnClasspath());

	this.setTitle(NLS.bind(JptJaxbUiMessages.ClassesGeneratorWizardPage_title, xmlSchemaName));
	this.setDescription(JptJaxbUiMessages.ClassesGeneratorWizardPage_desc);
	}

	// ******** UI components ********

	public void createControl(Composite parent) {
	this.setPageComplete(false);
	this.setControl(this.buildTopLevelControl(parent));

	initContainerPage(this.jpaProject.getJavaProject());
	}

	private Control buildTopLevelControl(Composite parent) {
	Composite composite = new Composite(parent, SWT.NULL);
	composite.setLayout(new GridLayout());

	this.settingsGroup = new SettingsGroup(composite);

	// add checkbox only if jpt.eclipselink.jaxb plugin is available
	// and EclipseLink MOXy is not on the classpath
	if(jptEclipseLinkJaxbBundleExists() && ! moxyIsOnClasspath()) {
	this.usesMoxyCheckBox = this.buildUsesMoxyCheckBox(composite);
	}

	Dialog.applyDialogFont(parent);
	return composite;
	}

	private Button buildUsesMoxyCheckBox(Composite parent) {

	Button checkBox = new Button(parent, SWT.CHECK);
	checkBox.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_usesMoxyImplementation);
	checkBox.setSelection(this.usesMoxy());
	checkBox.addSelectionListener(this.buildUsesMoxySelectionListener());

	return checkBox;
	}

	private SelectionListener buildUsesMoxySelectionListener() {
	return new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent event) {
	this.widgetSelected(event);
	}

	public void widgetSelected(SelectionEvent event) {
	setUsesMoxy(usesMoxyCheckBox.getSelection());
	validateProjectClasspath();
	}
	};
	}

	// ******** intra-wizard methods ********

	protected String getTargetFolder() {
	return this.targetFolder;
	}

	protected String getTargetPackage() {
	return this.targetPackage;
	}

	protected String getCatalog() {
	return this.settingsGroup.getCatalog();
	}

	protected String[] getBindingsFileNames() {
	return this.settingsGroup.getBindingsFileNames();
	}

	protected Boolean usesMoxy() {
	return this.usesMoxy;
	}

	protected void setUsesMoxy(boolean usesMoxy){
	this.usesMoxy = usesMoxy;
	}

	// ******** internal methods ********

	private boolean jptEclipseLinkJaxbBundleExists() {
	return (this.getJptEclipseLinkJaxbBundle() != null);
	}

	private Bundle getJptEclipseLinkJaxbBundle() {
	return Platform.getBundle(JPT_JAXB_ECLIPSELINK_UI_PLUGIN_ID); // Cannot reference directly EL plugin.
	}

	private void validateProjectClasspath() {
	//this line will suppress the "default package" warning (which doesn't really apply here
	//as the JAXB gen uses an org.example.schemaName package by default) and will clear the classpath warnings when necessary
	setMessage(null);

	if ( ! this.genericJaxbIsOnClasspath()) {
	this.displayWarning(JptJaxbUiMessages.ClassesGeneratorWizardPage_jaxbLibrariesNotAvailable);
	}
	else if (this.usesMoxy() && ! this.moxyIsOnClasspath()) {
	//this message is being truncated by the wizard width in some cases
	this.displayWarning(JptJaxbUiMessages.ClassesGeneratorWizardPage_moxyLibrariesNotAvailable);
	}

	//this code will intelligently remove our classpath warnings when they are present but no longer apply (as an alternative
	//to setting the message to null continuously as is currently done)
	// else if( this.getMessage() != null){
	// if (this.getMessage().equals(JptJaxbUiMessages.ClassesGeneratorWizardPage_jaxbLibrariesNotAvailable) \|\|
	// this.getMessage().equals(JptJaxbUiMessages.ClassesGeneratorWizardPage_moxyLibrariesNotAvailable)) {
	// setMessage(null);
	// }
	// }
	}

	private void displayWarning(String message) {
	this.setMessage(message, WARNING);
	}

	/**
	* Test if the Jaxb compiler is on the classpath.
	*/
	private boolean genericJaxbIsOnClasspath() {
	try {
	String className = ClassesGenerator.JAXB_GENERIC_GEN_CLASS;
	IType genClass = this.jpaProject.getJavaProject().findType(className);
	return (genClass != null);
	}
	catch (JavaModelException e) {
	throw new RuntimeException(e);
	}
	}
	/**
	* Test if the EclipseLink Jaxb compiler is on the classpath.
	*/
	private boolean moxyIsOnClasspath() {
	try {
	String className = ClassesGenerator.JAXB_ECLIPSELINK_GEN_CLASS;
	IType genClass = this.jpaProject.getJavaProject().findType(className);
	return (genClass != null);
	}
	catch (JavaModelException e) {
	throw new RuntimeException(e);
	}
	}

	// ******** overrides ********



	@Override
	protected IStatus packageChanged() {
	IStatus status = super.packageChanged();
	IPackageFragment packageFragment = getPackageFragment();
	if (!status.matches(IStatus.ERROR)) {
	this.targetPackage = packageFragment.getElementName();
	}
	return status;
	}

	@Override
	protected IStatus containerChanged() {
	IStatus status = super.containerChanged();
	String srcFolder = getPackageFragmentRootText();
	if( !status.matches(IStatus.ERROR) ){
	this.targetFolder = srcFolder.substring(srcFolder.indexOf("/") + 1);
	}
	return status;
	}

	@Override
	protected void handleFieldChanged(String fieldName) {
	super.handleFieldChanged(fieldName);
	if (this.fContainerStatus.matches(IStatus.ERROR)) {
	updateStatus(fContainerStatus);
	}else if( ! this.fPackageStatus.matches(IStatus.OK) ) {
	updateStatus(fPackageStatus);
	} else {
	updateStatus(Status.OK_STATUS);
	}
	validateProjectClasspath();
	}

	/**
	* Override setVisible to insure that our more important warning
	* message about classpath problems is displayed to the user first.
	*/
	@Override
	public void setVisible(boolean visible) {
	super.setVisible(visible);
	validateProjectClasspath();
	}

	@Override
	public final void performHelp() {
	//TODO We need a help ID for JAXB Generation
	}

	// ******** SettingsGroup class ********

	private class SettingsGroup {

	private final Text catalogText;

	private final ArrayList<String> bindingsFileNames;

	// ******** constructor ********

	private SettingsGroup(Composite composite) {
	super();
	Group group = new Group(composite, SWT.NONE);
	group.setLayout(new GridLayout(4, false)); // false = do not make columns equal width
	group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	group.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_settingsGroupTitle);
	// TODO PlatformUI.getWorkbench().getHelpSystem().setHelp(this.group, JpaHelpContextIds.XXX);

	// Source folder
	createContainerControls(group, 4);

	// Package
	createPackageControls(group, 4);

	// Catalog
	this.buildLabel(group, 1, JptJaxbUiMessages.ClassesGeneratorWizardPage_catalog);
	this.catalogText = this.buildText(group);

	// Bindings files
	this.bindingsFileNames = new ArrayList<String>();
	this.buildLabel(group, 1, JptJaxbUiMessages.ClassesGeneratorWizardPage_bindingsFiles);
	this.buildBindingsFileTable(group);
	}

	// ******** intra-wizard methods ********

	protected String getCatalog() {
	return this.catalogText.getText();
	}

	protected String[] getBindingsFileNames() {
	return ArrayTools.array(this.bindingsFileNames.iterator(), new String[0]);
	}

	// ******** UI components ********

	private Label buildLabel(Composite parent, int span, String text) {
	Label label = new Label(parent, SWT.NONE);
	label.setText(text);
	GridData gd = new GridData();
	gd.horizontalSpan = span;
	label.setLayoutData(gd);
	return label;
	}

	private Text buildText(Composite parent) {

	Text text = new Text(parent, SWT.BORDER);
	text.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	//Filler columns
	new Label(parent, SWT.NONE);
	new Label(parent, SWT.NONE);
	return text;
	}

	private TableViewer buildBindingsFileTable(Composite parent) {

	TableViewer tableViewer = this.buildTableViewer(parent, this.bindingsFileNames);

	this.buildAddRemoveButtons(parent, tableViewer, this.bindingsFileNames);
	return tableViewer;
	}

	private TableViewer buildTableViewer(Composite parent, ArrayList<String> tableDataModel) {

	TableLayoutComposite tableLayout = new TableLayoutComposite(parent, SWT.NONE);
	this.addColumnsData(tableLayout);

	final Table table = new Table(tableLayout, SWT.H_SCROLL \| SWT.V_SCROLL \| SWT.SINGLE \| SWT.FULL_SELECTION \| SWT.BORDER);
	table.setLinesVisible(false);

	TableColumn column = new TableColumn(table, SWT.NONE, 0);
	column.setResizable(true);

	GridData gridData= new GridData(GridData.FILL_BOTH);
	gridData.heightHint= SWTUtil.getTableHeightHint(table, 3);
	gridData.widthHint = 300;
	tableLayout.setLayoutData(gridData);

	TableViewer tableViewer = new TableViewer(table);
	tableViewer.setUseHashlookup(true);
	tableViewer.setLabelProvider(this.buildLabelProvider());
	tableViewer.setContentProvider(this.buildContentProvider());

	tableViewer.setInput(tableDataModel);
	return tableViewer;
	}

	private void buildAddRemoveButtons(Composite parent, final TableViewer tableViewer, final ArrayList<String> tableDataModel) {

	Composite buttonComposite = new Composite(parent, SWT.NULL);
	GridLayout buttonLayout = new GridLayout(1, false);
	buttonComposite.setLayout(buttonLayout);
	GridData gridData = new GridData();
	gridData.horizontalAlignment = GridData.FILL;
	gridData.verticalAlignment = GridData.BEGINNING;
	buttonComposite.setLayoutData(gridData);
	// Add buttons
	Button addButton = new Button(buttonComposite, SWT.PUSH);
	addButton.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_addButton);
	gridData = new GridData();
	gridData.horizontalAlignment = GridData.FILL;
	addButton.setLayoutData(gridData);
	addButton.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {}

	public void widgetSelected(SelectionEvent e) {

	String fileName = promptFile();
	if( ! StringTools.stringIsEmpty(fileName)) {

	tableDataModel.add(makeRelativeToProjectPath(fileName));
	tableViewer.refresh();
	}
	}
	});
	// Remove buttons
	Button removeButton = new Button(buttonComposite, SWT.PUSH);
	removeButton.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_removeButton);
	gridData = new GridData();
	gridData.horizontalAlignment = GridData.FILL;
	removeButton.setLayoutData(gridData);
	removeButton.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {}

	public void widgetSelected(SelectionEvent e) {
	StructuredSelection selection = (StructuredSelection)tableViewer.getSelection();
	if(selection.isEmpty()) {
	return;
	}
	String bindingsFileName = (String)selection.getFirstElement();
	removeBindingsFileName(bindingsFileName);

	tableViewer.refresh();
	}
	});
	addButton.setFocus();
	}

	// ******** internal methods ********

	private String makeRelativeToProjectPath(String filePath) {
	Path path = new Path(filePath);
	IPath relativePath = path.makeRelativeTo(jpaProject.getProject().getLocation());
	return relativePath.toOSString();
	}

	private void removeBindingsFileName(String bindingsName) {
	String name = this.getBindingsFileName(bindingsName);
	this.bindingsFileNames.remove(name);
	}

	private String getBindingsFileName(String bindingsName) {
	for(String name: this.bindingsFileNames) {
	if(name.equals(bindingsName)) {
	return name;
	}
	}
	return null;
	}

	private IBaseLabelProvider buildLabelProvider() {
	return new TableLabelProvider();
	}

	private IContentProvider buildContentProvider() {
	return new TableContentProvider();
	}

	/**
	* The Add button was clicked, its action invokes this action which should
	* prompt the user to select a file and return it.
	*/
	private String promptFile() {
	String projectPath= jpaProject.getProject().getLocation().toString();

	FileDialog dialog = new FileDialog(getShell());
	dialog.setText(JptJaxbUiMessages.ClassesGeneratorWizardPage_chooseABindingsFile);
	dialog.setFilterPath(projectPath);
	dialog.setFilterExtensions(new String[] {"*.xjb"}); //$NON-NLS-1$
	String filePath = dialog.open();

	return (filePath != null) ? filePath : null;
	}

	private void addColumnsData(TableLayoutComposite layout) {
	layout.addColumnData(new ColumnWeightData(50, true));
	}

	}

	// ******** inner class ********
	private class TableLabelProvider extends LabelProvider implements ITableLabelProvider {

	public Image getColumnImage(Object element, int columnIndex) {
	return null;
	}

	public String getColumnText(Object element, int columnIndex) {
	return (String)element;
	}
	}

	private class TableContentProvider implements IStructuredContentProvider {

	TableContentProvider() {
	super();
	}

	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}

	public void dispose() {}

	public Object[] getElements(Object inputElement) {
	return ((Collection<?>) inputElement).toArray();
	}
	}

	}