plugins/org.eclipse.jst.j2ee.ui/j2ee_ui/org/eclipse/jst/j2ee/internal/wizard/J2EEExportPage.java - gerrit/jeetools/webtools.javaee - Git at Google

 /*******************************************************************************
  * Copyright (c) 2003, 2004 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
  *******************************************************************************/
 /*
  * Created on Dec 3, 2003
  *
  * To change the template for this generated file go to
  * Window>Preferences>Java>Code Generation>Code and Comments
  */
 package org.eclipse.jst.j2ee.internal.wizard;

 import java.util.ArrayList;
 import java.util.Iterator;

 import org.eclipse.core.resources.IResource;
 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jst.j2ee.datamodel.properties.IJ2EEComponentExportDataModelProperties;
 import org.eclipse.jst.j2ee.internal.plugin.J2EEUIMessages;
 import org.eclipse.jst.j2ee.internal.plugin.J2EEUIPlugin;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Combo;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.wst.common.frameworks.datamodel.IDataModel;
 import org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizardPage;

 /**
  * @author cbridgha
  *
  * To change the template for this generated type comment go to Window>Preferences>Java>Code
  * Generation>Code and Comments
  */
 public abstract class J2EEExportPage extends DataModelWizardPage {

 	public static boolean isWindows = SWT.getPlatform().toLowerCase().startsWith("win"); //$NON-NLS-1$

 	protected IStructuredSelection currentResourceSelection;
 	private static final int SIZING_TEXT_FIELD_WIDTH = 305;
 	private static final String STORE_LABEL = "J2EE_EXPORT_"; //$NON-NLS-1$
 	private static final String OVERWRITE_LABEL = "OVERWRITE"; //$NON-NLS-1$
 	private static final String SOURCE_LABEL = "SOURCE"; //$NON-NLS-1$
 //	private static final String META_LABEL = "META"; //$NON-NLS-1$
 	protected static final String defBrowseButtonLabel = J2EEUIMessages.getResourceString(J2EEUIMessages.BROWSE_LABEL);
 	protected String LABEL_DESTINATION = J2EEUIMessages.getResourceString(J2EEUIMessages.J2EE_EXPORT_DESTINATION);
 	private Combo resourceNameCombo;
 	private Combo destinationNameCombo;
 	private Button destinationBrowseButton;
 	protected Button overwriteExistingFilesCheckbox;
 	private Button sourceFilesCheckbox;

 	/**
 	 * @param model
 	 * @param pageName
 	 */
 	public J2EEExportPage(IDataModel model, String pageName, IStructuredSelection selection) {
 		super(model, pageName);
 		currentResourceSelection = selection;

 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.common.frameworks.internal.ui.wizard.WTPWizardPage#getValidationPropertyNames()
 	 */
 	protected String[] getValidationPropertyNames() {
 		return null;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.common.frameworks.internal.ui.wizard.WTPWizardPage#createTopLevelComposite(org.eclipse.swt.widgets.Composite)
 	 */
 	protected Composite createTopLevelComposite(Composite parent) {

 		Composite composite = new Composite(parent, SWT.NULL);
 		//WorkbenchHelp.setHelp(composite, getInfopopID());
 		GridLayout layout = new GridLayout(1, false);
 		composite.setLayout(layout);

 		createSourceAndDestinationGroup(composite);
 		createOptionsGroup(composite);

 		//setupBasedOnInitialSelections();
 		setupInfopop(composite);
 		return composite;
 	}

 	/**
 	 * @param composite
 	 */
 	private void createSourceAndDestinationGroup(Composite parent) {

 		Composite composite = new Composite(parent, SWT.NULL);
 		GridLayout layout = new GridLayout(3, false);
 		composite.setLayout(layout);
 		createExportComponentGroup(composite);
 		createDestinationGroup(composite);

 	}
     /**
      * Creates the export source resource specification widgets.
      *
      * @param parent
      *            a <code>Composite</code> that is to be used as the parent of this group's
      *            collection of visual components
      * @see org.eclipse.swt.widgets.Composite
      */
     protected void createExportComponentGroup(Composite parent) {
         //Project label
         Label projectLabel = new Label(parent, SWT.NONE);
         projectLabel.setText(getComponentLabel());
         //Project combo
         resourceNameCombo = new Combo(parent, SWT.SINGLE | SWT.BORDER);
         GridData data = new GridData(GridData.FILL_HORIZONTAL);
         data.widthHint = SIZING_TEXT_FIELD_WIDTH;
         resourceNameCombo.setLayoutData(data);
         synchHelper.synchCombo(resourceNameCombo, IJ2EEComponentExportDataModelProperties.COMPONENT_NAME, null);
         new Label(parent, SWT.NONE);//Pad label
     }

     /**
      * @return
      */
     protected abstract String getComponentLabel();

     protected void createDestinationGroup(org.eclipse.swt.widgets.Composite parent) {

         //Destination label
         Label destinationLabel = new Label(parent, SWT.NONE);
         destinationLabel.setText(LABEL_DESTINATION);
         // destination name combo field
         destinationNameCombo = new Combo(parent, SWT.SINGLE | SWT.BORDER);
         destinationNameCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
         synchHelper.synchCombo(destinationNameCombo, IJ2EEComponentExportDataModelProperties.ARCHIVE_DESTINATION, null);

         // destination browse button
         destinationBrowseButton = new Button(parent, SWT.PUSH);
         destinationBrowseButton.setText(defBrowseButtonLabel); //$NON-NLS-1$
         destinationBrowseButton.setLayoutData((new GridData(GridData.FILL_HORIZONTAL)));
         destinationBrowseButton.addSelectionListener(new SelectionAdapter() {
             public void widgetSelected(SelectionEvent e) {
                 handleDestinationBrowseButtonPressed();
             }
         });
         destinationBrowseButton.setEnabled(true);

     }

     /**
      * Create the export options specification widgets.
      *
      * @param parent
      *            org.eclipse.swt.widgets.Composite
      */
     protected void createOptionsGroup(Composite parent) {

         // options group
         Composite optionsGroup = new Composite(parent, SWT.NULL);
         GridLayout layout = new GridLayout(1, false);
         optionsGroup.setLayout(layout);


         // source files... checkbox
         createSourceFilesCheckbox(optionsGroup);

         // overwrite... checkbox
         createOverwriteExistingFilesCheckbox(optionsGroup);

         // advanced button
         if (shouldShowProjectFilesCheckbox()) {
             createProjectFilesCheckbox(optionsGroup);
         }
     }

 	protected void createOverwriteExistingFilesCheckbox(Composite optionsGroup) {
 		//Overwrite checkbox
 		overwriteExistingFilesCheckbox = new Button(optionsGroup, SWT.CHECK | SWT.LEFT);
 		overwriteExistingFilesCheckbox.setText(J2EEUIMessages.getResourceString(J2EEUIMessages.J2EE_EXPORT_OVERWRITE_CHECKBOX)); //$NON-NLS-1$ = "Overwrite existing files without warning"
 		overwriteExistingFilesCheckbox.setEnabled(true);
 		synchHelper.synchCheckbox(overwriteExistingFilesCheckbox, IJ2EEComponentExportDataModelProperties.OVERWRITE_EXISTING, null);
 	}

 	protected void createSourceFilesCheckbox(Composite optionsGroup) {
 		sourceFilesCheckbox = new Button(optionsGroup, SWT.CHECK | SWT.LEFT);
 		sourceFilesCheckbox.setText(J2EEUIMessages.getResourceString(J2EEUIMessages.J2EE_EXPORT_SOURCE_CHECKBOX)); //$NON-NLS-1$
 		synchHelper.synchCheckbox(sourceFilesCheckbox, IJ2EEComponentExportDataModelProperties.EXPORT_SOURCE_FILES, null);
 	}

 	/**
 	 * @return
 	 */
 	protected boolean shouldShowProjectFilesCheckbox() {
 		return false;
 	}

 	protected void createProjectFilesCheckbox(Composite composite) {
 		//do nothing
 	}

 	/**
 	 * Populates the resource name field based upon the currently-selected resources.
 	 */
 	protected void setupBasedOnInitialSelections() {

 		if (currentResourceSelection.isEmpty() || setupBasedOnRefObjectSelection())
 			return; // no setup needed

 		java.util.List selections = new ArrayList();
 		Iterator aenum = currentResourceSelection.iterator();
 		while (aenum.hasNext()) {
 			IResource currentResource = (IResource) aenum.next();
 			// do not add inaccessible elements
 			if (currentResource.isAccessible())
 				selections.add(currentResource);
 		}
 		if (selections.isEmpty())
 			return; // setup not needed anymore

 //		int selectedResourceCount = selections.size();
 //TODO: find a way to select an existing component
 //		if (selectedResourceCount == 1) {
 //			IResource resource = (IResource) selections.get(0);
 //			if ((resource instanceof IProject) && checkForNature((IProject) resource)) {
 //				resourceNameCombo.setText(resource.getName().toString());
 //			}
 //		}
 	}

 	/**
 	 * @return
 	 */
 	protected String getProjectImportLabel() {
 		return null;
 	}

 	/**
 	 *
 	 */
 	protected void handleDestinationBrowseButtonPressed() {

 		FileDialog dialog = new FileDialog(destinationNameCombo.getShell(), SWT.SAVE);
 		String fileName = getDataModel().getStringProperty(IJ2EEComponentExportDataModelProperties.COMPONENT_NAME);
 		String[] filters = getFilterExpression();
 		if (!isWindows) {
 			if (filters.length != 0 && filters[0] != null && filters[0].indexOf('.') != -1) {
 				fileName += filters[0].substring(filters[0].indexOf('.'));
 			}
 		}
 		dialog.setFileName(fileName);
 		if (isWindows) {
 			dialog.setFilterExtensions(filters);
 		}
 		String filename = dialog.open();
 		if (filename != null)
 			destinationNameCombo.setText(filename);
 	}

 	protected void restoreWidgetValues() {

 		IDialogSettings settings = getDialogSettings();
 		if (settings != null) {
 			String[] sourceNames = settings.getArray(STORE_LABEL + getFileNamesStoreID());
 			if (sourceNames == null)
 				return; // ie.- no settings stored
 			for (int i = 0; i < sourceNames.length; i++) {
 				if (sourceNames[i] == null)
 					sourceNames[i] = ""; //$NON-NLS-1$
 			}
 			destinationNameCombo.setItems(sourceNames);
 			boolean overwrite = settings.getBoolean(STORE_LABEL + OVERWRITE_LABEL);
 			model.setBooleanProperty(IJ2EEComponentExportDataModelProperties.OVERWRITE_EXISTING, overwrite);
 			boolean includeSource = settings.getBoolean(STORE_LABEL + SOURCE_LABEL);
 			model.setBooleanProperty(IJ2EEComponentExportDataModelProperties.EXPORT_SOURCE_FILES, includeSource);
 		}
 	}

 	public void storeDefaultSettings() {
 		IDialogSettings settings = getDialogSettings();
 		if (settings != null) {
 			// update source names history
 			String[] sourceNames = settings.getArray(STORE_LABEL + getFileNamesStoreID());
 			if (sourceNames == null) {
 				sourceNames = new String[0];
 			}

 			String newName = destinationNameCombo.getText();

 			//rip out any empty filenames and trim length to 5
 			ArrayList newNames = new ArrayList();
 			for (int i = 0; i < sourceNames.length && i < 5; i++) {
 				if (sourceNames[i].trim().length() > 0 && !newName.equals(sourceNames[i])) {
 					newNames.add(sourceNames[i]);
 				}
 			}
 			newNames.add(0, destinationNameCombo.getText());
 			sourceNames = new String[newNames.size()];
 			newNames.toArray(sourceNames);

 			settings.put(STORE_LABEL + getFileNamesStoreID(), sourceNames);
 			settings.put(STORE_LABEL + OVERWRITE_LABEL, model.getBooleanProperty(IJ2EEComponentExportDataModelProperties.OVERWRITE_EXISTING));
 			settings.put(STORE_LABEL + SOURCE_LABEL, model.getBooleanProperty(IJ2EEComponentExportDataModelProperties.EXPORT_SOURCE_FILES));
 		}
 	}

 	/**
 	 * @return
 	 */
 	protected String getFileNamesStoreID() {
 		return getCompnentID();
 	}
 	protected abstract String getCompnentID();

     /**
 	 * @return
 	 */
 	protected String[] getFilterExpression() {
 		return new String[0];
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.wst.common.frameworks.internal.ui.wizard.WTPWizardPage#enter()
 	 */
 	protected void enter() {
 		super.enter();
 		restoreWidgetValues();
 	}

 	/**
 	 * @return
 	 */
 	//protected abstract String getNatureID();

 	protected abstract boolean isMetaTypeSupported(Object o);

 	/**
 	 * Populates the resource name field based upon the currently-selected resources.
 	 */
 	protected boolean setupBasedOnRefObjectSelection() {

 		if (currentResourceSelection.size() != 1)
 			return false;

 		Object o = currentResourceSelection.getFirstElement();
 		if (!isMetaTypeSupported(o))
 			return false;

 		EObject ref = (EObject) o;
 		IResource resource = ProjectUtilities.getProject(ref);
 		if (resource != null) {
 			resourceNameCombo.setText(resource.getName().toString());
 		}
 		return true;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.jface.wizard.WizardPage#getDialogSettings()
 	 */
 	protected IDialogSettings getDialogSettings() {
 		return J2EEUIPlugin.getDefault().getDialogSettings();
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2003, 2004 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
	*******************************************************************************/
	/*
	* Created on Dec 3, 2003
	*
	* To change the template for this generated file go to
	* Window>Preferences>Java>Code Generation>Code and Comments
	*/
	package org.eclipse.jst.j2ee.internal.wizard;

	import java.util.ArrayList;
	import java.util.Iterator;

	import org.eclipse.core.resources.IResource;
	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jst.j2ee.datamodel.properties.IJ2EEComponentExportDataModelProperties;
	import org.eclipse.jst.j2ee.internal.plugin.J2EEUIMessages;
	import org.eclipse.jst.j2ee.internal.plugin.J2EEUIPlugin;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Combo;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.wst.common.frameworks.datamodel.IDataModel;
	import org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizardPage;

	/**
	* @author cbridgha
	*
	* To change the template for this generated type comment go to Window>Preferences>Java>Code
	* Generation>Code and Comments
	*/
	public abstract class J2EEExportPage extends DataModelWizardPage {

	public static boolean isWindows = SWT.getPlatform().toLowerCase().startsWith("win"); //$NON-NLS-1$

	protected IStructuredSelection currentResourceSelection;
	private static final int SIZING_TEXT_FIELD_WIDTH = 305;
	private static final String STORE_LABEL = "J2EE_EXPORT_"; //$NON-NLS-1$
	private static final String OVERWRITE_LABEL = "OVERWRITE"; //$NON-NLS-1$
	private static final String SOURCE_LABEL = "SOURCE"; //$NON-NLS-1$
	// private static final String META_LABEL = "META"; //$NON-NLS-1$
	protected static final String defBrowseButtonLabel = J2EEUIMessages.getResourceString(J2EEUIMessages.BROWSE_LABEL);
	protected String LABEL_DESTINATION = J2EEUIMessages.getResourceString(J2EEUIMessages.J2EE_EXPORT_DESTINATION);
	private Combo resourceNameCombo;
	private Combo destinationNameCombo;
	private Button destinationBrowseButton;
	protected Button overwriteExistingFilesCheckbox;
	private Button sourceFilesCheckbox;

	/**
	* @param model
	* @param pageName
	*/
	public J2EEExportPage(IDataModel model, String pageName, IStructuredSelection selection) {
	super(model, pageName);
	currentResourceSelection = selection;

	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.common.frameworks.internal.ui.wizard.WTPWizardPage#getValidationPropertyNames()
	*/
	protected String[] getValidationPropertyNames() {
	return null;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.common.frameworks.internal.ui.wizard.WTPWizardPage#createTopLevelComposite(org.eclipse.swt.widgets.Composite)
	*/
	protected Composite createTopLevelComposite(Composite parent) {

	Composite composite = new Composite(parent, SWT.NULL);
	//WorkbenchHelp.setHelp(composite, getInfopopID());
	GridLayout layout = new GridLayout(1, false);
	composite.setLayout(layout);

	createSourceAndDestinationGroup(composite);
	createOptionsGroup(composite);

	//setupBasedOnInitialSelections();
	setupInfopop(composite);
	return composite;
	}

	/**
	* @param composite
	*/
	private void createSourceAndDestinationGroup(Composite parent) {

	Composite composite = new Composite(parent, SWT.NULL);
	GridLayout layout = new GridLayout(3, false);
	composite.setLayout(layout);
	createExportComponentGroup(composite);
	createDestinationGroup(composite);

	}
	/**
	* Creates the export source resource specification widgets.
	*
	* @param parent
	* a <code>Composite</code> that is to be used as the parent of this group's
	* collection of visual components
	* @see org.eclipse.swt.widgets.Composite
	*/
	protected void createExportComponentGroup(Composite parent) {
	//Project label
	Label projectLabel = new Label(parent, SWT.NONE);
	projectLabel.setText(getComponentLabel());
	//Project combo
	resourceNameCombo = new Combo(parent, SWT.SINGLE \| SWT.BORDER);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.widthHint = SIZING_TEXT_FIELD_WIDTH;
	resourceNameCombo.setLayoutData(data);
	synchHelper.synchCombo(resourceNameCombo, IJ2EEComponentExportDataModelProperties.COMPONENT_NAME, null);
	new Label(parent, SWT.NONE);//Pad label
	}

	/**
	* @return
	*/
	protected abstract String getComponentLabel();

	protected void createDestinationGroup(org.eclipse.swt.widgets.Composite parent) {

	//Destination label
	Label destinationLabel = new Label(parent, SWT.NONE);
	destinationLabel.setText(LABEL_DESTINATION);
	// destination name combo field
	destinationNameCombo = new Combo(parent, SWT.SINGLE \| SWT.BORDER);
	destinationNameCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	synchHelper.synchCombo(destinationNameCombo, IJ2EEComponentExportDataModelProperties.ARCHIVE_DESTINATION, null);

	// destination browse button
	destinationBrowseButton = new Button(parent, SWT.PUSH);
	destinationBrowseButton.setText(defBrowseButtonLabel); //$NON-NLS-1$
	destinationBrowseButton.setLayoutData((new GridData(GridData.FILL_HORIZONTAL)));
	destinationBrowseButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handleDestinationBrowseButtonPressed();
	}
	});
	destinationBrowseButton.setEnabled(true);

	}

	/**
	* Create the export options specification widgets.
	*
	* @param parent
	* org.eclipse.swt.widgets.Composite
	*/
	protected void createOptionsGroup(Composite parent) {

	// options group
	Composite optionsGroup = new Composite(parent, SWT.NULL);
	GridLayout layout = new GridLayout(1, false);
	optionsGroup.setLayout(layout);


	// source files... checkbox
	createSourceFilesCheckbox(optionsGroup);

	// overwrite... checkbox
	createOverwriteExistingFilesCheckbox(optionsGroup);

	// advanced button
	if (shouldShowProjectFilesCheckbox()) {
	createProjectFilesCheckbox(optionsGroup);
	}
	}

	protected void createOverwriteExistingFilesCheckbox(Composite optionsGroup) {
	//Overwrite checkbox
	overwriteExistingFilesCheckbox = new Button(optionsGroup, SWT.CHECK \| SWT.LEFT);
	overwriteExistingFilesCheckbox.setText(J2EEUIMessages.getResourceString(J2EEUIMessages.J2EE_EXPORT_OVERWRITE_CHECKBOX)); //$NON-NLS-1$ = "Overwrite existing files without warning"
	overwriteExistingFilesCheckbox.setEnabled(true);
	synchHelper.synchCheckbox(overwriteExistingFilesCheckbox, IJ2EEComponentExportDataModelProperties.OVERWRITE_EXISTING, null);
	}

	protected void createSourceFilesCheckbox(Composite optionsGroup) {
	sourceFilesCheckbox = new Button(optionsGroup, SWT.CHECK \| SWT.LEFT);
	sourceFilesCheckbox.setText(J2EEUIMessages.getResourceString(J2EEUIMessages.J2EE_EXPORT_SOURCE_CHECKBOX)); //$NON-NLS-1$
	synchHelper.synchCheckbox(sourceFilesCheckbox, IJ2EEComponentExportDataModelProperties.EXPORT_SOURCE_FILES, null);
	}

	/**
	* @return
	*/
	protected boolean shouldShowProjectFilesCheckbox() {
	return false;
	}

	protected void createProjectFilesCheckbox(Composite composite) {
	//do nothing
	}

	/**
	* Populates the resource name field based upon the currently-selected resources.
	*/
	protected void setupBasedOnInitialSelections() {

	if (currentResourceSelection.isEmpty() \|\| setupBasedOnRefObjectSelection())
	return; // no setup needed

	java.util.List selections = new ArrayList();
	Iterator aenum = currentResourceSelection.iterator();
	while (aenum.hasNext()) {
	IResource currentResource = (IResource) aenum.next();
	// do not add inaccessible elements
	if (currentResource.isAccessible())
	selections.add(currentResource);
	}
	if (selections.isEmpty())
	return; // setup not needed anymore

	// int selectedResourceCount = selections.size();
	//TODO: find a way to select an existing component
	// if (selectedResourceCount == 1) {
	// IResource resource = (IResource) selections.get(0);
	// if ((resource instanceof IProject) && checkForNature((IProject) resource)) {
	// resourceNameCombo.setText(resource.getName().toString());
	// }
	// }
	}

	/**
	* @return
	*/
	protected String getProjectImportLabel() {
	return null;
	}

	/**
	*
	*/
	protected void handleDestinationBrowseButtonPressed() {

	FileDialog dialog = new FileDialog(destinationNameCombo.getShell(), SWT.SAVE);
	String fileName = getDataModel().getStringProperty(IJ2EEComponentExportDataModelProperties.COMPONENT_NAME);
	String[] filters = getFilterExpression();
	if (!isWindows) {
	if (filters.length != 0 && filters[0] != null && filters[0].indexOf('.') != -1) {
	fileName += filters[0].substring(filters[0].indexOf('.'));
	}
	}
	dialog.setFileName(fileName);
	if (isWindows) {
	dialog.setFilterExtensions(filters);
	}
	String filename = dialog.open();
	if (filename != null)
	destinationNameCombo.setText(filename);
	}

	protected void restoreWidgetValues() {

	IDialogSettings settings = getDialogSettings();
	if (settings != null) {
	String[] sourceNames = settings.getArray(STORE_LABEL + getFileNamesStoreID());
	if (sourceNames == null)
	return; // ie.- no settings stored
	for (int i = 0; i < sourceNames.length; i++) {
	if (sourceNames[i] == null)
	sourceNames[i] = ""; //$NON-NLS-1$
	}
	destinationNameCombo.setItems(sourceNames);
	boolean overwrite = settings.getBoolean(STORE_LABEL + OVERWRITE_LABEL);
	model.setBooleanProperty(IJ2EEComponentExportDataModelProperties.OVERWRITE_EXISTING, overwrite);
	boolean includeSource = settings.getBoolean(STORE_LABEL + SOURCE_LABEL);
	model.setBooleanProperty(IJ2EEComponentExportDataModelProperties.EXPORT_SOURCE_FILES, includeSource);
	}
	}

	public void storeDefaultSettings() {
	IDialogSettings settings = getDialogSettings();
	if (settings != null) {
	// update source names history
	String[] sourceNames = settings.getArray(STORE_LABEL + getFileNamesStoreID());
	if (sourceNames == null) {
	sourceNames = new String[0];
	}

	String newName = destinationNameCombo.getText();

	//rip out any empty filenames and trim length to 5
	ArrayList newNames = new ArrayList();
	for (int i = 0; i < sourceNames.length && i < 5; i++) {
	if (sourceNames[i].trim().length() > 0 && !newName.equals(sourceNames[i])) {
	newNames.add(sourceNames[i]);
	}
	}
	newNames.add(0, destinationNameCombo.getText());
	sourceNames = new String[newNames.size()];
	newNames.toArray(sourceNames);

	settings.put(STORE_LABEL + getFileNamesStoreID(), sourceNames);
	settings.put(STORE_LABEL + OVERWRITE_LABEL, model.getBooleanProperty(IJ2EEComponentExportDataModelProperties.OVERWRITE_EXISTING));
	settings.put(STORE_LABEL + SOURCE_LABEL, model.getBooleanProperty(IJ2EEComponentExportDataModelProperties.EXPORT_SOURCE_FILES));
	}
	}

	/**
	* @return
	*/
	protected String getFileNamesStoreID() {
	return getCompnentID();
	}
	protected abstract String getCompnentID();

	/**
	* @return
	*/
	protected String[] getFilterExpression() {
	return new String[0];
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.wst.common.frameworks.internal.ui.wizard.WTPWizardPage#enter()
	*/
	protected void enter() {
	super.enter();
	restoreWidgetValues();
	}

	/**
	* @return
	*/
	//protected abstract String getNatureID();

	protected abstract boolean isMetaTypeSupported(Object o);

	/**
	* Populates the resource name field based upon the currently-selected resources.
	*/
	protected boolean setupBasedOnRefObjectSelection() {

	if (currentResourceSelection.size() != 1)
	return false;

	Object o = currentResourceSelection.getFirstElement();
	if (!isMetaTypeSupported(o))
	return false;

	EObject ref = (EObject) o;
	IResource resource = ProjectUtilities.getProject(ref);
	if (resource != null) {
	resourceNameCombo.setText(resource.getName().toString());
	}
	return true;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.jface.wizard.WizardPage#getDialogSettings()
	*/
	protected IDialogSettings getDialogSettings() {
	return J2EEUIPlugin.getDefault().getDialogSettings();
	}

	}