org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/jres/StandardVMPage.java - jdt/eclipse.jdt.debug - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007, 2011 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
  *******************************************************************************/
 package org.eclipse.jdt.internal.debug.ui.jres;

 import java.io.File;
 import java.io.IOException;
 import java.net.URL;

 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.debug.internal.ui.SWTFactory;
 import org.eclipse.debug.ui.StringVariableSelectionDialog;
 import org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage;
 import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds;
 import org.eclipse.jdt.internal.debug.ui.JavaDebugImages;
 import org.eclipse.jdt.internal.debug.ui.StatusInfo;
 import org.eclipse.jdt.launching.AbstractVMInstallType;
 import org.eclipse.jdt.launching.IVMInstallType;
 import org.eclipse.jdt.launching.VMStandin;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.BusyIndicator;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionAdapter;
 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.DirectoryDialog;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.PlatformUI;

 /**
  * Page used to edit a standard VM.
  *
  * @since 3.3
  */
 public class StandardVMPage extends AbstractVMInstallPage {

 	// VM being edited or created
 	private VMStandin fVM;
 	private Text fVMName;
 	private Text fVMArgs;
 	private Text fJRERoot;
 	private VMLibraryBlock fLibraryBlock;
 // the VM install's javadoc location
 	private URL fJavadocLocation = null;
 	private boolean fAutoDetectAttributes = false;
 	private IStatus[] fFieldStatus = new IStatus[1];

 	/**
 	 *
 	 */
 	public StandardVMPage() {
 		super(JREMessages.StandardVMPage_0);
 		for (int i = 0; i < fFieldStatus.length; i++) {
 			fFieldStatus[i] = Status.OK_STATUS;
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.IDialogPage#getImage()
 	 */
 	@Override
 	public Image getImage() {
 		return JavaDebugImages.get(JavaDebugImages.IMG_WIZBAN_LIBRARY);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
 	 */
 	public void createControl(Composite p) {
 		// create a composite with standard margins and spacing
 		Composite composite = new Composite(p, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 3;
 		composite.setLayout(layout);
 		composite.setLayoutData(new GridData(GridData.FILL_BOTH));

 	// VM location
 		SWTFactory.createLabel(composite, JREMessages.addVMDialog_jreHome, 1);
 		fJRERoot = SWTFactory.createSingleText(composite, 1);
 		Button folders = SWTFactory.createPushButton(composite, JREMessages.AddVMDialog_22, null);
 		GridData data = (GridData) folders.getLayoutData();
 		data.horizontalAlignment = GridData.END;
 	//VM name
 		SWTFactory.createLabel(composite, JREMessages.addVMDialog_jreName, 1);
 		fVMName = SWTFactory.createSingleText(composite, 2);
 	//VM arguments
 		SWTFactory.createLabel(composite, JREMessages.AddVMDialog_23, 1);
 		fVMArgs = SWTFactory.createSingleText(composite, 1);
 		Button variables = SWTFactory.createPushButton(composite, JREMessages.StandardVMPage_3, null);
 		data = (GridData) variables.getLayoutData();
 		data.horizontalAlignment = GridData.END;
 	//VM libraries block
 		SWTFactory.createLabel(composite, JREMessages.AddVMDialog_JRE_system_libraries__1, 3);
 		fLibraryBlock = new VMLibraryBlock();
 		fLibraryBlock.setWizard(getWizard());
 		fLibraryBlock.createControl(composite);
 		Control libControl = fLibraryBlock.getControl();
 		GridData gd = new GridData(GridData.FILL_BOTH);
 		gd.horizontalSpan = 3;
 		libControl.setLayoutData(gd);


 	//add the listeners now to prevent them from monkeying with initialized settings
 		fVMName.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				validateVMName();
 			}
 		});
 		fJRERoot.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				validateJRELocation();
 			}
 		});
 		folders.addSelectionListener(new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent e) {}
 			public void widgetSelected(SelectionEvent e) {
 				DirectoryDialog dialog = new DirectoryDialog(getShell());
 				File file = new File(fJRERoot.getText());
 				String text = fJRERoot.getText();
 				if (file.isFile()) {
 					text = file.getParentFile().getAbsolutePath();
 				}
 				dialog.setFilterPath(text);
 				dialog.setMessage(JREMessages.addVMDialog_pickJRERootDialog_message);
 				String newPath = dialog.open();
 				if (newPath != null) {
 					fJRERoot.setText(newPath);
 				}
 			}
 		});
 		variables.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				StringVariableSelectionDialog dialog = new StringVariableSelectionDialog(getShell());
 				if (dialog.open() == Window.OK) {
 					String expression = dialog.getVariableExpression();
 					if (expression != null) {
 						fVMArgs.insert(expression);
 					}
 				}
 			}
 		});
 		Dialog.applyDialogFont(composite);
 		setControl(composite);
 		initializeFields();
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaDebugHelpContextIds.EDIT_JRE_STD_VM_WIZARD_PAGE);
 	}

 	/**
 	 * Validates the JRE location
 	 * @return the status after validating the JRE location
 	 */
 	private void validateJRELocation() {
 		String locationName = fJRERoot.getText();
 		IStatus s = null;
 		File file = null;
 		if (locationName.length() == 0) {
 			s = new StatusInfo(IStatus.WARNING, JREMessages.addVMDialog_enterLocation);
 		}
 		else {
 			file = new File(locationName);
 			if (!file.exists()) {
 				s = new StatusInfo(IStatus.ERROR, JREMessages.addVMDialog_locationNotExists);
 			}
 			else {
 				final IStatus[] temp = new IStatus[1];
 				final File tempFile = file;
 				Runnable r = new Runnable() {
 					public void run() {
 						temp[0] = fVM.getVMInstallType().validateInstallLocation(tempFile);
 					}
 				};
 				BusyIndicator.showWhile(getShell().getDisplay(), r);
 				s = temp[0];
 			}
 		}
 		if (file != null) {
 			fVM.setInstallLocation(file);
 		}
 		if (s.isOK() && file != null) {
 			String name = fVMName.getText();
 			if (name == null || name.trim().length() == 0) {
 				// auto-generate VM name
 				if (file.isFile()) {
 					String fileName = file.getName();
 					int index = fileName.lastIndexOf(".ee"); //$NON-NLS-1$
 					if (index > 0) {
 						fileName = fileName.substring(0, index);
 					}
 					fVMName.setText(fileName);
 				} else {
 					try {
 						String genName = null;
 						IPath path = new Path(file.getCanonicalPath());
 						int segs = path.segmentCount();
 						if (segs == 1) {
 							genName = path.segment(0);
 						}
 						else if (segs >= 2) {
 							String last = path.lastSegment();
 							if ("jre".equalsIgnoreCase(last)) { //$NON-NLS-1$
 								genName = path.segment(segs - 2);
 							}
 							else {
 								genName = last;
 							}
 						}
 						if (genName != null) {
 							fVMName.setText(genName);
 						}
 					} catch (IOException e) {}
 				}
 			}
 		}
 		detectJavadocLocation();
 		setJRELocationStatus(s);
 		fLibraryBlock.setSelection(fVM);
 		updatePageStatus();
 	}

 	/**
 	 * Auto-detects the default javadoc location
 	 */
 	private void detectJavadocLocation() {
 		if (fAutoDetectAttributes) {
 			IVMInstallType type = fVM.getVMInstallType();
 			if (type instanceof AbstractVMInstallType) {
 				AbstractVMInstallType atype = (AbstractVMInstallType)type;
 				fJavadocLocation = atype.getDefaultJavadocLocation(getInstallLocation());
 				String args = atype.getDefaultVMArguments(getInstallLocation());
 				if (args != null) {
 					fVMArgs.setText(args);
 				}
 			}
 		} else {
 			fJavadocLocation = fVM.getJavadocLocation();
 		}
 	}

 	/**
 	 * Returns the installation location as a file from the JRE root text control
 	 * @return the installation location as a file
 	 */
 	protected File getInstallLocation() {
 		return new File(fJRERoot.getText());
 	}

 	/**
 	 * Validates the entered name of the VM
 	 * @return the status of the name validation
 	 */
 	private void validateVMName() {
 		nameChanged(fVMName.getText());
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage#finish()
 	 */
 	@Override
 	public boolean finish() {
 		setFieldValuesToVM(fVM);
 		fLibraryBlock.finish();
 		return true;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage#getSelection()
 	 */
 	@Override
 	public VMStandin getSelection() {
 		return fVM;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage#setSelection(org.eclipse.jdt.launching.VMStandin)
 	 */
 	@Override
 	public void setSelection(VMStandin vm) {
 		super.setSelection(vm);
 		fVM = vm;
 		fAutoDetectAttributes = vm.getJavadocLocation() == null;
 		setTitle(JREMessages.StandardVMPage_1);
 		setDescription(JREMessages.StandardVMPage_2);
 	}

 	/**
 	 * initialize fields to the specified VM
 	 * @param vm the VM to initialize from
 	 */
 	protected void setFieldValuesToVM(VMStandin vm) {
 		File dir = new File(fJRERoot.getText());
 		File file = dir.getAbsoluteFile();
 		vm.setInstallLocation(file);
 		vm.setName(fVMName.getText());
 		vm.setJavadocLocation(getURL());

 		String argString = fVMArgs.getText().trim();
 		if (argString != null && argString.length() > 0) {
 			vm.setVMArgs(argString);
 		}
 		else {
 			vm.setVMArgs(null);
 		}
 	}

 	/**
 	 * Returns the URL for the javadoc location
 	 * @return the URL for the javadoc location
 	 */
 	protected URL getURL() {
 		return fJavadocLocation;
 	}

 	/**
 	 * Creates a unique name for the VMInstallType
 	 * @param vmType the vm install type
 	 * @return a unique name
 	 */
 	protected static String createUniqueId(IVMInstallType vmType) {
 		String id = null;
 		do {
 			id = String.valueOf(System.currentTimeMillis());
 		} while (vmType.findVMInstall(id) != null);
 		return id;
 	}

 	/**
 	 * Initialize the dialogs fields
 	 */
 	private void initializeFields() {
 		fLibraryBlock.setSelection(fVM);
 		fVMName.setText(fVM.getName());
 		File installLocation = fVM.getInstallLocation();
 		if (installLocation != null) {
 			fJRERoot.setText(installLocation.getAbsolutePath());
 		}
 		String vmArgs = fVM.getVMArgs();
 		if (vmArgs != null) {
 			fVMArgs.setText(vmArgs);
 		}
 		validateVMName();
 		validateJRELocation();
 	}

 	/**
 	 * Sets the status of the JRE location field.
 	 *
 	 * @param status JRE location status
 	 */
 	private void setJRELocationStatus(IStatus status) {
 		fFieldStatus[0] = status;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.DialogPage#getErrorMessage()
 	 */
 	@Override
 	public String getErrorMessage() {
 		String message = super.getErrorMessage();
 		if (message == null) {
 			return fLibraryBlock.getErrorMessage();
 		}
 		return message;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.wizard.WizardPage#isPageComplete()
 	 */
 	@Override
 	public boolean isPageComplete() {
 		boolean complete = super.isPageComplete();
 		if (complete) {
 			return fLibraryBlock.isPageComplete();
 		}
 		return complete;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage#getVMStatus()
 	 */
 	@Override
 	protected IStatus[] getVMStatus() {
 		return fFieldStatus;
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2007, 2011 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
	*******************************************************************************/
	package org.eclipse.jdt.internal.debug.ui.jres;

	import java.io.File;
	import java.io.IOException;
	import java.net.URL;

	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.debug.internal.ui.SWTFactory;
	import org.eclipse.debug.ui.StringVariableSelectionDialog;
	import org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage;
	import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds;
	import org.eclipse.jdt.internal.debug.ui.JavaDebugImages;
	import org.eclipse.jdt.internal.debug.ui.StatusInfo;
	import org.eclipse.jdt.launching.AbstractVMInstallType;
	import org.eclipse.jdt.launching.IVMInstallType;
	import org.eclipse.jdt.launching.VMStandin;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.window.Window;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.BusyIndicator;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionAdapter;
	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.DirectoryDialog;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.PlatformUI;

	/**
	* Page used to edit a standard VM.
	*
	* @since 3.3
	*/
	public class StandardVMPage extends AbstractVMInstallPage {

	// VM being edited or created
	private VMStandin fVM;
	private Text fVMName;
	private Text fVMArgs;
	private Text fJRERoot;
	private VMLibraryBlock fLibraryBlock;
	// the VM install's javadoc location
	private URL fJavadocLocation = null;
	private boolean fAutoDetectAttributes = false;
	private IStatus[] fFieldStatus = new IStatus[1];

	/**
	*
	*/
	public StandardVMPage() {
	super(JREMessages.StandardVMPage_0);
	for (int i = 0; i < fFieldStatus.length; i++) {
	fFieldStatus[i] = Status.OK_STATUS;
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.IDialogPage#getImage()
	*/
	@Override
	public Image getImage() {
	return JavaDebugImages.get(JavaDebugImages.IMG_WIZBAN_LIBRARY);
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
	*/
	public void createControl(Composite p) {
	// create a composite with standard margins and spacing
	Composite composite = new Composite(p, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 3;
	composite.setLayout(layout);
	composite.setLayoutData(new GridData(GridData.FILL_BOTH));

	// VM location
	SWTFactory.createLabel(composite, JREMessages.addVMDialog_jreHome, 1);
	fJRERoot = SWTFactory.createSingleText(composite, 1);
	Button folders = SWTFactory.createPushButton(composite, JREMessages.AddVMDialog_22, null);
	GridData data = (GridData) folders.getLayoutData();
	data.horizontalAlignment = GridData.END;
	//VM name
	SWTFactory.createLabel(composite, JREMessages.addVMDialog_jreName, 1);
	fVMName = SWTFactory.createSingleText(composite, 2);
	//VM arguments
	SWTFactory.createLabel(composite, JREMessages.AddVMDialog_23, 1);
	fVMArgs = SWTFactory.createSingleText(composite, 1);
	Button variables = SWTFactory.createPushButton(composite, JREMessages.StandardVMPage_3, null);
	data = (GridData) variables.getLayoutData();
	data.horizontalAlignment = GridData.END;
	//VM libraries block
	SWTFactory.createLabel(composite, JREMessages.AddVMDialog_JRE_system_libraries__1, 3);
	fLibraryBlock = new VMLibraryBlock();
	fLibraryBlock.setWizard(getWizard());
	fLibraryBlock.createControl(composite);
	Control libControl = fLibraryBlock.getControl();
	GridData gd = new GridData(GridData.FILL_BOTH);
	gd.horizontalSpan = 3;
	libControl.setLayoutData(gd);


	//add the listeners now to prevent them from monkeying with initialized settings
	fVMName.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	validateVMName();
	}
	});
	fJRERoot.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	validateJRELocation();
	}
	});
	folders.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {}
	public void widgetSelected(SelectionEvent e) {
	DirectoryDialog dialog = new DirectoryDialog(getShell());
	File file = new File(fJRERoot.getText());
	String text = fJRERoot.getText();
	if (file.isFile()) {
	text = file.getParentFile().getAbsolutePath();
	}
	dialog.setFilterPath(text);
	dialog.setMessage(JREMessages.addVMDialog_pickJRERootDialog_message);
	String newPath = dialog.open();
	if (newPath != null) {
	fJRERoot.setText(newPath);
	}
	}
	});
	variables.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	StringVariableSelectionDialog dialog = new StringVariableSelectionDialog(getShell());
	if (dialog.open() == Window.OK) {
	String expression = dialog.getVariableExpression();
	if (expression != null) {
	fVMArgs.insert(expression);
	}
	}
	}
	});
	Dialog.applyDialogFont(composite);
	setControl(composite);
	initializeFields();
	PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaDebugHelpContextIds.EDIT_JRE_STD_VM_WIZARD_PAGE);
	}

	/**
	* Validates the JRE location
	* @return the status after validating the JRE location
	*/
	private void validateJRELocation() {
	String locationName = fJRERoot.getText();
	IStatus s = null;
	File file = null;
	if (locationName.length() == 0) {
	s = new StatusInfo(IStatus.WARNING, JREMessages.addVMDialog_enterLocation);
	}
	else {
	file = new File(locationName);
	if (!file.exists()) {
	s = new StatusInfo(IStatus.ERROR, JREMessages.addVMDialog_locationNotExists);
	}
	else {
	final IStatus[] temp = new IStatus[1];
	final File tempFile = file;
	Runnable r = new Runnable() {
	public void run() {
	temp[0] = fVM.getVMInstallType().validateInstallLocation(tempFile);
	}
	};
	BusyIndicator.showWhile(getShell().getDisplay(), r);
	s = temp[0];
	}
	}
	if (file != null) {
	fVM.setInstallLocation(file);
	}
	if (s.isOK() && file != null) {
	String name = fVMName.getText();
	if (name == null \|\| name.trim().length() == 0) {
	// auto-generate VM name
	if (file.isFile()) {
	String fileName = file.getName();
	int index = fileName.lastIndexOf(".ee"); //$NON-NLS-1$
	if (index > 0) {
	fileName = fileName.substring(0, index);
	}
	fVMName.setText(fileName);
	} else {
	try {
	String genName = null;
	IPath path = new Path(file.getCanonicalPath());
	int segs = path.segmentCount();
	if (segs == 1) {
	genName = path.segment(0);
	}
	else if (segs >= 2) {
	String last = path.lastSegment();
	if ("jre".equalsIgnoreCase(last)) { //$NON-NLS-1$
	genName = path.segment(segs - 2);
	}
	else {
	genName = last;
	}
	}
	if (genName != null) {
	fVMName.setText(genName);
	}
	} catch (IOException e) {}
	}
	}
	}
	detectJavadocLocation();
	setJRELocationStatus(s);
	fLibraryBlock.setSelection(fVM);
	updatePageStatus();
	}

	/**
	* Auto-detects the default javadoc location
	*/
	private void detectJavadocLocation() {
	if (fAutoDetectAttributes) {
	IVMInstallType type = fVM.getVMInstallType();
	if (type instanceof AbstractVMInstallType) {
	AbstractVMInstallType atype = (AbstractVMInstallType)type;
	fJavadocLocation = atype.getDefaultJavadocLocation(getInstallLocation());
	String args = atype.getDefaultVMArguments(getInstallLocation());
	if (args != null) {
	fVMArgs.setText(args);
	}
	}
	} else {
	fJavadocLocation = fVM.getJavadocLocation();
	}
	}

	/**
	* Returns the installation location as a file from the JRE root text control
	* @return the installation location as a file
	*/
	protected File getInstallLocation() {
	return new File(fJRERoot.getText());
	}

	/**
	* Validates the entered name of the VM
	* @return the status of the name validation
	*/
	private void validateVMName() {
	nameChanged(fVMName.getText());
	}

	/* (non-Javadoc)
	* @see org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage#finish()
	*/
	@Override
	public boolean finish() {
	setFieldValuesToVM(fVM);
	fLibraryBlock.finish();
	return true;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage#getSelection()
	*/
	@Override
	public VMStandin getSelection() {
	return fVM;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage#setSelection(org.eclipse.jdt.launching.VMStandin)
	*/
	@Override
	public void setSelection(VMStandin vm) {
	super.setSelection(vm);
	fVM = vm;
	fAutoDetectAttributes = vm.getJavadocLocation() == null;
	setTitle(JREMessages.StandardVMPage_1);
	setDescription(JREMessages.StandardVMPage_2);
	}

	/**
	* initialize fields to the specified VM
	* @param vm the VM to initialize from
	*/
	protected void setFieldValuesToVM(VMStandin vm) {
	File dir = new File(fJRERoot.getText());
	File file = dir.getAbsoluteFile();
	vm.setInstallLocation(file);
	vm.setName(fVMName.getText());
	vm.setJavadocLocation(getURL());

	String argString = fVMArgs.getText().trim();
	if (argString != null && argString.length() > 0) {
	vm.setVMArgs(argString);
	}
	else {
	vm.setVMArgs(null);
	}
	}

	/**
	* Returns the URL for the javadoc location
	* @return the URL for the javadoc location
	*/
	protected URL getURL() {
	return fJavadocLocation;
	}

	/**
	* Creates a unique name for the VMInstallType
	* @param vmType the vm install type
	* @return a unique name
	*/
	protected static String createUniqueId(IVMInstallType vmType) {
	String id = null;
	do {
	id = String.valueOf(System.currentTimeMillis());
	} while (vmType.findVMInstall(id) != null);
	return id;
	}

	/**
	* Initialize the dialogs fields
	*/
	private void initializeFields() {
	fLibraryBlock.setSelection(fVM);
	fVMName.setText(fVM.getName());
	File installLocation = fVM.getInstallLocation();
	if (installLocation != null) {
	fJRERoot.setText(installLocation.getAbsolutePath());
	}
	String vmArgs = fVM.getVMArgs();
	if (vmArgs != null) {
	fVMArgs.setText(vmArgs);
	}
	validateVMName();
	validateJRELocation();
	}

	/**
	* Sets the status of the JRE location field.
	*
	* @param status JRE location status
	*/
	private void setJRELocationStatus(IStatus status) {
	fFieldStatus[0] = status;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.DialogPage#getErrorMessage()
	*/
	@Override
	public String getErrorMessage() {
	String message = super.getErrorMessage();
	if (message == null) {
	return fLibraryBlock.getErrorMessage();
	}
	return message;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.wizard.WizardPage#isPageComplete()
	*/
	@Override
	public boolean isPageComplete() {
	boolean complete = super.isPageComplete();
	if (complete) {
	return fLibraryBlock.isPageComplete();
	}
	return complete;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jdt.debug.ui.launchConfigurations.AbstractVMInstallPage#getVMStatus()
	*/
	@Override
	protected IStatus[] getVMStatus() {
	return fFieldStatus;
	}

	}