bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/wizards/datatransfer/WizardExternalProjectImportPage.java - platform/eclipse.platform.ui - Git at Google

 package org.eclipse.ui.wizards.datatransfer;

 /*
  * (c) Copyright IBM Corp. 2000, 2002.
  * All Rights Reserved.
  */
 import java.io.File;
 import java.io.FileFilter;
 import java.lang.reflect.InvocationTargetException;

 import org.eclipse.core.resources.*;
 import org.eclipse.core.runtime.*;
 import org.eclipse.jface.dialogs.ErrorDialog;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.wizard.WizardPage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.*;
 import org.eclipse.ui.actions.WorkspaceModifyOperation;
 import org.eclipse.ui.help.WorkbenchHelp;
 import org.eclipse.ui.internal.IHelpContextIds;
 import org.eclipse.ui.internal.WorkbenchPlugin;

 /**
  * Standard main page for a wizard that creates a project resource from
  * whose location already contains a project.
  * <p>
  * This page may be used by clients as-is; it may be also be subclassed to suit.
  * </p>
  * <p>
  * Example useage:
  * <pre>
  * mainPage = new WizardExternalProjectImportPage("basicNewProjectPage");
  * mainPage.setTitle("Project");
  * mainPage.setDescription("Create a new project resource.");
  * </pre>
  * </p>
  */
 public class WizardExternalProjectImportPage extends WizardPage {

 	private FileFilter projectFilter = new FileFilter() {
 			//Only accept those files that are .project
 	public boolean accept(File pathName) {
 			return pathName.getName().equals(IProjectDescription.DESCRIPTION_FILE_NAME);
 		}
 	};

 	//Keep track of the directory that we browsed to last time
 	//the wizard was invoked.
 	private static String previouslyBrowsedDirectory = "";

 	// widgets
 	private Text projectNameField;
 	private Text locationPathField;
 	private Label locationLabel;
 	private Button browseButton;
 	private IProjectDescription description;

 	private Listener locationModifyListener = new Listener() {
 		public void handleEvent(Event e) {
 			setPageComplete(validatePage());
 		}
 	};

 	// constants
 	private static final int SIZING_TEXT_FIELD_WIDTH = 250;
 	private static final int SIZING_INDENTATION_WIDTH = 10;
 	/**
 	 * Creates a new project creation wizard page.
 	 *
 	 * @param pageName the name of this page
 	 */
 	public WizardExternalProjectImportPage() {
 		super("wizardExternalProjectPage"); //$NON-NLS-1$
 		setPageComplete(false);
 		setTitle(
 			DataTransferMessages.getString("WizardExternalProjectImportPage.title")); //$NON-NLS-1$
 		setDescription(
 			DataTransferMessages.getString("WizardExternalProjectImportPage.description")); //$NON-NLS-1$

 	}
 	/** (non-Javadoc)
 	 * Method declared on IDialogPage.
 	 */
 	public void createControl(Composite parent) {

 		initializeDialogUnits(parent);

 		Composite composite = new Composite(parent, SWT.NULL);

 		WorkbenchHelp.setHelp(composite, IHelpContextIds.NEW_PROJECT_WIZARD_PAGE);

 		composite.setLayout(new GridLayout());
 		composite.setLayoutData(new GridData(GridData.FILL_BOTH));
 		composite.setFont(parent.getFont());

 		createProjectNameGroup(composite);
 		createProjectLocationGroup(composite);
 		validatePage();
 		// Show description on opening
 		setErrorMessage(null);
 		setMessage(null);
 		setControl(composite);
 	}

 	/**
 	 * Creates the project location specification controls.
 	 *
 	 * @param parent the parent composite
 	 */
 	private final void createProjectLocationGroup(Composite parent) {

 		// project specification group
 		Composite projectGroup = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 3;
 		projectGroup.setLayout(layout);
 		projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		projectGroup.setFont(parent.getFont());

 		// new project label
 		Label projectContentsLabel = new Label(projectGroup, SWT.NONE);
 		projectContentsLabel.setText(
 			DataTransferMessages.getString(
 				"WizardExternalProjectImportPage.projectContentsLabel")); //$NON-NLS-1$
 		projectContentsLabel.setFont(parent.getFont());

 		createUserSpecifiedProjectLocationGroup(projectGroup);
 	}
 	/**
 	 * Creates the project name specification controls.
 	 *
 	 * @param parent the parent composite
 	 */
 	private final void createProjectNameGroup(Composite parent) {

 		Font dialogFont = parent.getFont();

 		// project specification group
 		Composite projectGroup = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		projectGroup.setFont(dialogFont);
 		projectGroup.setLayout(layout);
 		projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		// new project label
 		Label projectLabel = new Label(projectGroup, SWT.NONE);
 		projectLabel.setText(DataTransferMessages.getString("WizardExternalProjectImportPage.nameLabel")); //$NON-NLS-1$
 		projectLabel.setFont(dialogFont);

 		// new project name entry field
 		projectNameField = new Text(projectGroup, SWT.BORDER | SWT.READ_ONLY);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.widthHint = SIZING_TEXT_FIELD_WIDTH;
 		projectNameField.setLayoutData(data);
 		projectNameField.setFont(dialogFont);
 	}
 	/**
 	 * Creates the project location specification controls.
 	 *
 	 * @param projectGroup the parent composite
 	 * @param boolean - the initial enabled state of the widgets created
 	 */
 	private void createUserSpecifiedProjectLocationGroup(Composite projectGroup) {

 		Font dialogFont = projectGroup.getFont();

 		// project location entry field
 		this.locationPathField = new Text(projectGroup, SWT.BORDER);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.widthHint = SIZING_TEXT_FIELD_WIDTH;
 		this.locationPathField.setLayoutData(data);
 		this.locationPathField.setFont(dialogFont);

 		// browse button
 		this.browseButton = new Button(projectGroup, SWT.PUSH);
 		this.browseButton.setText(
 			DataTransferMessages.getString("WizardExternalProjectImportPage.browseLabel")); //$NON-NLS-1$
 		this.browseButton.setFont(dialogFont);
 		setButtonLayoutData(this.browseButton);

 		this.browseButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent event) {
 				handleLocationBrowseButtonPressed();
 			}
 		});

 		locationPathField.addListener(SWT.Modify, locationModifyListener);
 	}
 	/**
 	 * Returns the current project location path as entered by
 	 * the user, or its anticipated initial value.
 	 *
 	 * @return the project location path, its anticipated initial value, or <code>null</code>
 	 *   if no project location path is known
 	 */
 	public IPath getLocationPath() {

 		return new Path(getProjectLocationFieldValue());
 	}
 	/**
 	 * Creates a project resource handle for the current project name field value.
 	 * <p>
 	 * This method does not create the project resource; this is the responsibility
 	 * of <code>IProject::create</code> invoked by the new project resource wizard.
 	 * </p>
 	 *
 	 * @return the new project resource handle
 	 */
 	public IProject getProjectHandle() {
 		return ResourcesPlugin.getWorkspace().getRoot().getProject(getProjectName());
 	}
 	/**
 	 * Returns the current project name as entered by the user, or its anticipated
 	 * initial value.
 	 *
 	 * @return the project name, its anticipated initial value, or <code>null</code>
 	 *   if no project name is known
 	 */
 	public String getProjectName() {
 		return getProjectNameFieldValue();
 	}
 	/**
 	 * Returns the value of the project name field
 	 * with leading and trailing spaces removed.
 	 *
 	 * @return the project name in the field
 	 */
 	private String getProjectNameFieldValue() {
 		if (projectNameField == null)
 			return ""; //$NON-NLS-1$
 		else
 			return projectNameField.getText().trim();
 	}
 	/**
 	 * Returns the value of the project location field
 	 * with leading and trailing spaces removed.
 	 *
 	 * @return the project location directory in the field
 	 */
 	private String getProjectLocationFieldValue() {
 		return locationPathField.getText().trim();
 	}
 	/**
 	 *	Open an appropriate directory browser
 	 */
 	private void handleLocationBrowseButtonPressed() {
 		DirectoryDialog dialog = new DirectoryDialog(locationPathField.getShell());
 		dialog.setMessage(
 			DataTransferMessages.getString(
 				"WizardExternalProjectImportPage.directoryLabel")); //$NON-NLS-1$

 		String dirName = getProjectLocationFieldValue();
 		if (dirName.length() == 0)
 			dirName = previouslyBrowsedDirectory;


 		if (dirName.length() == 0)  //$NON-NLS-1$
 			dialog.setFilterPath(getWorkspace().getRoot().getLocation().toOSString());
 		else{
 			File path = new File(dirName);
 			if (path.exists())
 				dialog.setFilterPath(new Path(dirName).toOSString());
 		}

 		String selectedDirectory = dialog.open();
 		if (selectedDirectory != null) {
 			previouslyBrowsedDirectory = selectedDirectory;
 			locationPathField.setText(previouslyBrowsedDirectory);
 			setProjectName(projectFile(previouslyBrowsedDirectory));
 		}
 	}

 	/**
 	 * Returns whether this page's controls currently all contain valid
 	 * values.
 	 *
 	 * @return <code>true</code> if all controls are valid, and
 	 *   <code>false</code> if at least one is invalid
 	 */
 	private boolean validatePage() {

 		String locationFieldContents = getProjectLocationFieldValue();

 		if (locationFieldContents.equals("")) { //$NON-NLS-1$
 			setErrorMessage(null);
 			setMessage(
 				DataTransferMessages.getString(
 					"WizardExternalProjectImportPage.projectLocationEmpty")); //$NON-NLS-1$
 			return false;
 		}

 		IPath path = new Path(""); //$NON-NLS-1$
 		if (!path.isValidPath(locationFieldContents)) {
 			setErrorMessage(
 				DataTransferMessages.getString(
 					"WizardExternalProjectImportPage.locationError")); //$NON-NLS-1$
 			return false;
 		}

 		File projectFile = projectFile(locationFieldContents);
 		if (projectFile == null) {
 			setErrorMessage(
 				DataTransferMessages.format(
 					"WizardExternalProjectImportPage.notAProject", //$NON-NLS-1$
 					new String[] { locationFieldContents }));
 			return false;
 		}
 		else{
 			setProjectName(projectFile);
 		}

 		if (getProjectHandle().exists()) {
 			setErrorMessage(
 				DataTransferMessages.getString(
 					"WizardExternalProjectImportPage.projectExistsMessage")); //$NON-NLS-1$
 			return false;
 		}

 		setErrorMessage(null);
 		setMessage(null);
 		return true;
 	}
 	private IWorkspace getWorkspace() {
 		IWorkspace workspace = WorkbenchPlugin.getPluginWorkspace();
 		return workspace;
 	}


 	/**
 	 * Return whether or not the specifed location is a prefix
 	 * of the root.
 	 */
 	private boolean isPrefixOfRoot(IPath locationPath) {
 		return Platform.getLocation().isPrefixOf(locationPath);
 	}

 	/**
 	 * Set the project name using either the name of the
 	 * parent of the file or the name entry in the xml for
 	 * the file
 	 */
 	private void setProjectName(File projectFile) {

 		//If there is no file or the user has already specified forget it
 		if (projectFile == null)
 			return;

 		IPath path = new Path(projectFile.getPath());

 		IProjectDescription newDescription = null;

 		try {
 			newDescription = getWorkspace().loadProjectDescription(path);
 		} catch (CoreException exception) {
 			//no good couldn't get the name
 		}

 		if (newDescription == null) {
 			this.description = null;
 			this.projectNameField.setText("");
 		}
 		else{
 			this.description = newDescription;
 			this.projectNameField.setText(this.description.getName());
 		}
 	}

 	/**
 	 * Return a.project file from the specified location.
 	 * If there isn't one return null.
 	 */
 	private File projectFile(String locationFieldContents) {
 		File directory = new File(locationFieldContents);
 		if (directory.isFile())
 			return null;

 		File[] files = directory.listFiles(this.projectFilter);
 		if (files != null && files.length == 1)
 			return files[0];
 		else
 			return null;
 	}

 	/**
 	 * Creates a new project resource with the selected name.
 	 * <p>
 	 * In normal usage, this method is invoked after the user has pressed Finish on
 	 * the wizard; the enablement of the Finish button implies that all controls
 	 * on the pages currently contain valid values.
 	 * </p>
 	 *
 	 * @return the created project resource, or <code>null</code> if the project
 	 *    was not created
 	 */
 	IProject createExistingProject() {

 		String projectName = projectNameField.getText();
 		final IWorkspace workspace = ResourcesPlugin.getWorkspace();
 		final IProject project = workspace.getRoot().getProject(projectName);
 		if(this.description == null){
 			this.description =	workspace.newProjectDescription(projectName);
 			IPath locationPath = getLocationPath();
 			//If it is under the root use the default location
 			if (isPrefixOfRoot(locationPath))
 				this.description.setLocation(null);
 			else
 				this.description.setLocation(locationPath);
 		}
 		else
 			this.description.setName(projectName);

 		// create the new project operation
 		WorkspaceModifyOperation op = new WorkspaceModifyOperation() {
 			protected void execute(IProgressMonitor monitor) throws CoreException {
 				monitor.beginTask("", 2000); //$NON-NLS-1$
 				project.create(description, new SubProgressMonitor(monitor, 1000));
 				if (monitor.isCanceled())
 					throw new OperationCanceledException();
 				project.open(new SubProgressMonitor(monitor, 1000));

 			}
 		};

 		// run the new project creation operation
 		try {
 			getContainer().run(true, true, op);
 		} catch (InterruptedException e) {
 			return null;
 		} catch (InvocationTargetException e) {
 			// ie.- one of the steps resulted in a core exception
 			Throwable t = e.getTargetException();
 			if (t instanceof CoreException) {
 				if (((CoreException) t).getStatus().getCode()
 					== IResourceStatus.CASE_VARIANT_EXISTS) {
 					MessageDialog.openError(getShell(), DataTransferMessages.getString("WizardExternalProjectImportPage.errorMessage"), //$NON-NLS-1$
 					DataTransferMessages.getString("WizardExternalProjectImportPage.caseVariantExistsError") //$NON-NLS-1$,
 					);
 				} else {
 					ErrorDialog.openError(getShell(), DataTransferMessages.getString("WizardExternalProjectImportPage.errorMessage"), //$NON-NLS-1$
 					null, ((CoreException) t).getStatus());
 				}
 			}
 			return null;
 		}

 		return project;
 	}

 	/*
  	 * see @DialogPage.setVisible(boolean)
  	 */
 	public void setVisible(boolean visible) {
 		super.setVisible(visible);
 		if(visible)
 			this.locationPathField.setFocus();
 	}

 }
	package org.eclipse.ui.wizards.datatransfer;

	/*
	* (c) Copyright IBM Corp. 2000, 2002.
	* All Rights Reserved.
	*/
	import java.io.File;
	import java.io.FileFilter;
	import java.lang.reflect.InvocationTargetException;

	import org.eclipse.core.resources.*;
	import org.eclipse.core.runtime.*;
	import org.eclipse.jface.dialogs.ErrorDialog;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.wizard.WizardPage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.*;
	import org.eclipse.ui.actions.WorkspaceModifyOperation;
	import org.eclipse.ui.help.WorkbenchHelp;
	import org.eclipse.ui.internal.IHelpContextIds;
	import org.eclipse.ui.internal.WorkbenchPlugin;

	/**
	* Standard main page for a wizard that creates a project resource from
	* whose location already contains a project.
	* <p>
	* This page may be used by clients as-is; it may be also be subclassed to suit.
	* </p>
	* <p>
	* Example useage:
	* <pre>
	* mainPage = new WizardExternalProjectImportPage("basicNewProjectPage");
	* mainPage.setTitle("Project");
	* mainPage.setDescription("Create a new project resource.");
	* </pre>
	* </p>
	*/
	public class WizardExternalProjectImportPage extends WizardPage {

	private FileFilter projectFilter = new FileFilter() {
	//Only accept those files that are .project
	public boolean accept(File pathName) {
	return pathName.getName().equals(IProjectDescription.DESCRIPTION_FILE_NAME);
	}
	};

	//Keep track of the directory that we browsed to last time
	//the wizard was invoked.
	private static String previouslyBrowsedDirectory = "";

	// widgets
	private Text projectNameField;
	private Text locationPathField;
	private Label locationLabel;
	private Button browseButton;
	private IProjectDescription description;

	private Listener locationModifyListener = new Listener() {
	public void handleEvent(Event e) {
	setPageComplete(validatePage());
	}
	};

	// constants
	private static final int SIZING_TEXT_FIELD_WIDTH = 250;
	private static final int SIZING_INDENTATION_WIDTH = 10;
	/**
	* Creates a new project creation wizard page.
	*
	* @param pageName the name of this page
	*/
	public WizardExternalProjectImportPage() {
	super("wizardExternalProjectPage"); //$NON-NLS-1$
	setPageComplete(false);
	setTitle(
	DataTransferMessages.getString("WizardExternalProjectImportPage.title")); //$NON-NLS-1$
	setDescription(
	DataTransferMessages.getString("WizardExternalProjectImportPage.description")); //$NON-NLS-1$

	}
	/** (non-Javadoc)
	* Method declared on IDialogPage.
	*/
	public void createControl(Composite parent) {

	initializeDialogUnits(parent);

	Composite composite = new Composite(parent, SWT.NULL);

	WorkbenchHelp.setHelp(composite, IHelpContextIds.NEW_PROJECT_WIZARD_PAGE);

	composite.setLayout(new GridLayout());
	composite.setLayoutData(new GridData(GridData.FILL_BOTH));
	composite.setFont(parent.getFont());

	createProjectNameGroup(composite);
	createProjectLocationGroup(composite);
	validatePage();
	// Show description on opening
	setErrorMessage(null);
	setMessage(null);
	setControl(composite);
	}

	/**
	* Creates the project location specification controls.
	*
	* @param parent the parent composite
	*/
	private final void createProjectLocationGroup(Composite parent) {

	// project specification group
	Composite projectGroup = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 3;
	projectGroup.setLayout(layout);
	projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	projectGroup.setFont(parent.getFont());

	// new project label
	Label projectContentsLabel = new Label(projectGroup, SWT.NONE);
	projectContentsLabel.setText(
	DataTransferMessages.getString(
	"WizardExternalProjectImportPage.projectContentsLabel")); //$NON-NLS-1$
	projectContentsLabel.setFont(parent.getFont());

	createUserSpecifiedProjectLocationGroup(projectGroup);
	}
	/**
	* Creates the project name specification controls.
	*
	* @param parent the parent composite
	*/
	private final void createProjectNameGroup(Composite parent) {

	Font dialogFont = parent.getFont();

	// project specification group
	Composite projectGroup = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	projectGroup.setFont(dialogFont);
	projectGroup.setLayout(layout);
	projectGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	// new project label
	Label projectLabel = new Label(projectGroup, SWT.NONE);
	projectLabel.setText(DataTransferMessages.getString("WizardExternalProjectImportPage.nameLabel")); //$NON-NLS-1$
	projectLabel.setFont(dialogFont);

	// new project name entry field
	projectNameField = new Text(projectGroup, SWT.BORDER \| SWT.READ_ONLY);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.widthHint = SIZING_TEXT_FIELD_WIDTH;
	projectNameField.setLayoutData(data);
	projectNameField.setFont(dialogFont);
	}
	/**
	* Creates the project location specification controls.
	*
	* @param projectGroup the parent composite
	* @param boolean - the initial enabled state of the widgets created
	*/
	private void createUserSpecifiedProjectLocationGroup(Composite projectGroup) {

	Font dialogFont = projectGroup.getFont();

	// project location entry field
	this.locationPathField = new Text(projectGroup, SWT.BORDER);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.widthHint = SIZING_TEXT_FIELD_WIDTH;
	this.locationPathField.setLayoutData(data);
	this.locationPathField.setFont(dialogFont);

	// browse button
	this.browseButton = new Button(projectGroup, SWT.PUSH);
	this.browseButton.setText(
	DataTransferMessages.getString("WizardExternalProjectImportPage.browseLabel")); //$NON-NLS-1$
	this.browseButton.setFont(dialogFont);
	setButtonLayoutData(this.browseButton);

	this.browseButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent event) {
	handleLocationBrowseButtonPressed();
	}
	});

	locationPathField.addListener(SWT.Modify, locationModifyListener);
	}
	/**
	* Returns the current project location path as entered by
	* the user, or its anticipated initial value.
	*
	* @return the project location path, its anticipated initial value, or <code>null</code>
	* if no project location path is known
	*/
	public IPath getLocationPath() {

	return new Path(getProjectLocationFieldValue());
	}
	/**
	* Creates a project resource handle for the current project name field value.
	* <p>
	* This method does not create the project resource; this is the responsibility
	* of <code>IProject::create</code> invoked by the new project resource wizard.
	* </p>
	*
	* @return the new project resource handle
	*/
	public IProject getProjectHandle() {
	return ResourcesPlugin.getWorkspace().getRoot().getProject(getProjectName());
	}
	/**
	* Returns the current project name as entered by the user, or its anticipated
	* initial value.
	*
	* @return the project name, its anticipated initial value, or <code>null</code>
	* if no project name is known
	*/
	public String getProjectName() {
	return getProjectNameFieldValue();
	}
	/**
	* Returns the value of the project name field
	* with leading and trailing spaces removed.
	*
	* @return the project name in the field
	*/
	private String getProjectNameFieldValue() {
	if (projectNameField == null)
	return ""; //$NON-NLS-1$
	else
	return projectNameField.getText().trim();
	}
	/**
	* Returns the value of the project location field
	* with leading and trailing spaces removed.
	*
	* @return the project location directory in the field
	*/
	private String getProjectLocationFieldValue() {
	return locationPathField.getText().trim();
	}
	/**
	* Open an appropriate directory browser
	*/
	private void handleLocationBrowseButtonPressed() {
	DirectoryDialog dialog = new DirectoryDialog(locationPathField.getShell());
	dialog.setMessage(
	DataTransferMessages.getString(
	"WizardExternalProjectImportPage.directoryLabel")); //$NON-NLS-1$

	String dirName = getProjectLocationFieldValue();
	if (dirName.length() == 0)
	dirName = previouslyBrowsedDirectory;


	if (dirName.length() == 0) //$NON-NLS-1$
	dialog.setFilterPath(getWorkspace().getRoot().getLocation().toOSString());
	else{
	File path = new File(dirName);
	if (path.exists())
	dialog.setFilterPath(new Path(dirName).toOSString());
	}

	String selectedDirectory = dialog.open();
	if (selectedDirectory != null) {
	previouslyBrowsedDirectory = selectedDirectory;
	locationPathField.setText(previouslyBrowsedDirectory);
	setProjectName(projectFile(previouslyBrowsedDirectory));
	}
	}

	/**
	* Returns whether this page's controls currently all contain valid
	* values.
	*
	* @return <code>true</code> if all controls are valid, and
	* <code>false</code> if at least one is invalid
	*/
	private boolean validatePage() {

	String locationFieldContents = getProjectLocationFieldValue();

	if (locationFieldContents.equals("")) { //$NON-NLS-1$
	setErrorMessage(null);
	setMessage(
	DataTransferMessages.getString(
	"WizardExternalProjectImportPage.projectLocationEmpty")); //$NON-NLS-1$
	return false;
	}

	IPath path = new Path(""); //$NON-NLS-1$
	if (!path.isValidPath(locationFieldContents)) {
	setErrorMessage(
	DataTransferMessages.getString(
	"WizardExternalProjectImportPage.locationError")); //$NON-NLS-1$
	return false;
	}

	File projectFile = projectFile(locationFieldContents);
	if (projectFile == null) {
	setErrorMessage(
	DataTransferMessages.format(
	"WizardExternalProjectImportPage.notAProject", //$NON-NLS-1$
	new String[] { locationFieldContents }));
	return false;
	}
	else{
	setProjectName(projectFile);
	}

	if (getProjectHandle().exists()) {
	setErrorMessage(
	DataTransferMessages.getString(
	"WizardExternalProjectImportPage.projectExistsMessage")); //$NON-NLS-1$
	return false;
	}

	setErrorMessage(null);
	setMessage(null);
	return true;
	}
	private IWorkspace getWorkspace() {
	IWorkspace workspace = WorkbenchPlugin.getPluginWorkspace();
	return workspace;
	}


	/**
	* Return whether or not the specifed location is a prefix
	* of the root.
	*/
	private boolean isPrefixOfRoot(IPath locationPath) {
	return Platform.getLocation().isPrefixOf(locationPath);
	}

	/**
	* Set the project name using either the name of the
	* parent of the file or the name entry in the xml for
	* the file
	*/
	private void setProjectName(File projectFile) {

	//If there is no file or the user has already specified forget it
	if (projectFile == null)
	return;

	IPath path = new Path(projectFile.getPath());

	IProjectDescription newDescription = null;

	try {
	newDescription = getWorkspace().loadProjectDescription(path);
	} catch (CoreException exception) {
	//no good couldn't get the name
	}

	if (newDescription == null) {
	this.description = null;
	this.projectNameField.setText("");
	}
	else{
	this.description = newDescription;
	this.projectNameField.setText(this.description.getName());
	}
	}

	/**
	* Return a.project file from the specified location.
	* If there isn't one return null.
	*/
	private File projectFile(String locationFieldContents) {
	File directory = new File(locationFieldContents);
	if (directory.isFile())
	return null;

	File[] files = directory.listFiles(this.projectFilter);
	if (files != null && files.length == 1)
	return files[0];
	else
	return null;
	}

	/**
	* Creates a new project resource with the selected name.
	* <p>
	* In normal usage, this method is invoked after the user has pressed Finish on
	* the wizard; the enablement of the Finish button implies that all controls
	* on the pages currently contain valid values.
	* </p>
	*
	* @return the created project resource, or <code>null</code> if the project
	* was not created
	*/
	IProject createExistingProject() {

	String projectName = projectNameField.getText();
	final IWorkspace workspace = ResourcesPlugin.getWorkspace();
	final IProject project = workspace.getRoot().getProject(projectName);
	if(this.description == null){
	this.description = workspace.newProjectDescription(projectName);
	IPath locationPath = getLocationPath();
	//If it is under the root use the default location
	if (isPrefixOfRoot(locationPath))
	this.description.setLocation(null);
	else
	this.description.setLocation(locationPath);
	}
	else
	this.description.setName(projectName);

	// create the new project operation
	WorkspaceModifyOperation op = new WorkspaceModifyOperation() {
	protected void execute(IProgressMonitor monitor) throws CoreException {
	monitor.beginTask("", 2000); //$NON-NLS-1$
	project.create(description, new SubProgressMonitor(monitor, 1000));
	if (monitor.isCanceled())
	throw new OperationCanceledException();
	project.open(new SubProgressMonitor(monitor, 1000));

	}
	};

	// run the new project creation operation
	try {
	getContainer().run(true, true, op);
	} catch (InterruptedException e) {
	return null;
	} catch (InvocationTargetException e) {
	// ie.- one of the steps resulted in a core exception
	Throwable t = e.getTargetException();
	if (t instanceof CoreException) {
	if (((CoreException) t).getStatus().getCode()
	== IResourceStatus.CASE_VARIANT_EXISTS) {
	MessageDialog.openError(getShell(), DataTransferMessages.getString("WizardExternalProjectImportPage.errorMessage"), //$NON-NLS-1$
	DataTransferMessages.getString("WizardExternalProjectImportPage.caseVariantExistsError") //$NON-NLS-1$,
	);
	} else {
	ErrorDialog.openError(getShell(), DataTransferMessages.getString("WizardExternalProjectImportPage.errorMessage"), //$NON-NLS-1$
	null, ((CoreException) t).getStatus());
	}
	}
	return null;
	}

	return project;
	}

	/*
	* see @DialogPage.setVisible(boolean)
	*/
	public void setVisible(boolean visible) {
	super.setVisible(visible);
	if(visible)
	this.locationPathField.setFocus();
	}

	}