org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/launcher/AddVMDialog.java - jdt/eclipse.jdt.debug - Git at Google

 package org.eclipse.jdt.internal.debug.ui.launcher;

 /**********************************************************************
 Copyright (c) 2002 IBM Corp. and others. All rights reserved.
 This file is made available under the terms of the Common Public License v1.0
 which accompanies this distribution, and is available at
 http://www.eclipse.org/legal/cpl-v10.html
 **********************************************************************/

 import java.io.File;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.text.MessageFormat;

 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.jdt.debug.ui.IJavaDebugUIConstants;
 import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds;
 import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
 import org.eclipse.jdt.internal.ui.dialogs.StatusDialog;
 import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
 import org.eclipse.jdt.internal.ui.wizards.dialogfields.ComboDialogField;
 import org.eclipse.jdt.internal.ui.wizards.dialogfields.DialogField;
 import org.eclipse.jdt.internal.ui.wizards.dialogfields.IDialogFieldListener;
 import org.eclipse.jdt.internal.ui.wizards.dialogfields.IStringButtonAdapter;
 import org.eclipse.jdt.internal.ui.wizards.dialogfields.StringButtonDialogField;
 import org.eclipse.jdt.internal.ui.wizards.dialogfields.StringDialogField;
 import org.eclipse.jdt.launching.AbstractVMInstallType;
 import org.eclipse.jdt.launching.IVMInstall;
 import org.eclipse.jdt.launching.IVMInstallType;
 import org.eclipse.jdt.launching.VMStandin;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.BusyIndicator;
 import org.eclipse.swt.graphics.Font;
 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.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.help.WorkbenchHelp;

 public class AddVMDialog extends StatusDialog {

 	private IAddVMDialogRequestor fRequestor;

 	private IVMInstall fEditedVM;

 	private IVMInstallType[] fVMTypes;
 	private IVMInstallType fSelectedVMType;

 	private ComboDialogField fVMTypeCombo;
 	private VMLibraryBlock fLibraryBlock;

 	private StringButtonDialogField fJRERoot;
 	private StringDialogField fVMName;

 	private StringButtonDialogField fJavadocURL;
 	private boolean fAutoDetectJavadocLocation = false;

 	private IDialogSettings fDialogSettings;

 	private IStatus[] fStati;

 	public AddVMDialog(IAddVMDialogRequestor requestor, Shell shell, IVMInstallType[] vmInstallTypes, IVMInstall editedVM) {
 		super(shell);
 		fRequestor= requestor;
 		fStati= new IStatus[5];
 		for (int i= 0; i < fStati.length; i++) {
 			fStati[i]= new StatusInfo();
 		}

 		fVMTypes= vmInstallTypes;
 		fSelectedVMType= editedVM != null ? editedVM.getVMInstallType() : vmInstallTypes[0];

 		fEditedVM= editedVM;

 		fDialogSettings= JDIDebugUIPlugin.getDefault().getDialogSettings();

 		//only detect the javadoc location if not already set
 		fAutoDetectJavadocLocation = fEditedVM == null || fEditedVM.getJavadocLocation() == null;
 	}

 	/**
 	 * @see Windows#configureShell
 	 */
 	protected void configureShell(Shell newShell) {
 		super.configureShell(newShell);
 		WorkbenchHelp.setHelp(newShell, IJavaDebugHelpContextIds.EDIT_JRE_DIALOG);
 	}

 	protected void createDialogFields() {
 		fVMTypeCombo= new ComboDialogField(SWT.READ_ONLY);
 		fVMTypeCombo.setLabelText(LauncherMessages.getString("addVMDialog.jreType")); //$NON-NLS-1$
 		fVMTypeCombo.setDialogFieldListener(new IDialogFieldListener() {
 			public void dialogFieldChanged(DialogField field) {
 				updateVMType();
 			}
 		});

 		fVMName= new StringDialogField();
 		fVMName.setLabelText(LauncherMessages.getString("addVMDialog.jreName")); //$NON-NLS-1$
 		fVMName.setDialogFieldListener(new IDialogFieldListener() {
 			public void dialogFieldChanged(DialogField field) {
 				setVMNameStatus(validateVMName());
 				updateStatusLine();
 			}
 		});

 		fJRERoot= new StringButtonDialogField(new IStringButtonAdapter() {
 			public void changeControlPressed(DialogField field) {
 				browseForInstallDir();
 			}
 		});
 		fJRERoot.setLabelText(LauncherMessages.getString("addVMDialog.jreHome")); //$NON-NLS-1$
 		fJRERoot.setButtonLabel(LauncherMessages.getString("addVMDialog.browse1")); //$NON-NLS-1$
 		fJRERoot.setDialogFieldListener(new IDialogFieldListener() {
 			public void dialogFieldChanged(DialogField field) {
 				setJRELocationStatus(validateJRELocation());
 				updateStatusLine();
 			}
 		});

 		fJavadocURL = new StringButtonDialogField(new IStringButtonAdapter() {
 			public void changeControlPressed(DialogField field) {
 				browseForJavadocURL();
 			}
 		});
 		fJavadocURL.setLabelText(LauncherMessages.getString("AddVMDialog.Java&doc_URL__1")); //$NON-NLS-1$
 		fJavadocURL.setButtonLabel(LauncherMessages.getString("AddVMDialog.Bro&wse..._2")); //$NON-NLS-1$
 		fJavadocURL.setDialogFieldListener(new IDialogFieldListener() {
 			public void dialogFieldChanged(DialogField field) {
 				setJavadocURLStatus(validateJavadocURL());
 				updateStatusLine();
 			}
 		});
 	}

 	protected String getVMName() {
 		return fVMName.getText();
 	}

 	protected File getInstallLocation() {
 		return new File(fJRERoot.getText());
 	}

 	protected Control createDialogArea(Composite ancestor) {
 		Font font = ancestor.getFont();
 		initializeDialogUnits(ancestor);
 		createDialogFields();
 		Composite parent= new Composite(ancestor, SWT.NULL);
 		GridLayout layout= new GridLayout();
 		layout.numColumns= 3;
 		parent.setLayout(layout);
 		parent.setFont(font);

 		fVMTypeCombo.doFillIntoGrid(parent, 3);
 		((GridData)fVMTypeCombo.getComboControl(null).getLayoutData()).widthHint= convertWidthInCharsToPixels(50);

 		fVMName.doFillIntoGrid(parent, 3);

 		fJRERoot.doFillIntoGrid(parent, 3);

 		fJavadocURL.doFillIntoGrid(parent, 3);

 		Label l = new Label(parent, SWT.NONE);
 		l.setText(LauncherMessages.getString("AddVMDialog.JRE_system_libraries__1")); //$NON-NLS-1$
 		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = 3;
 		l.setLayoutData(gd);
 		l.setFont(font);

 		fLibraryBlock = new VMLibraryBlock(this);
 		Control block = fLibraryBlock.createControl(parent);
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = 3;
 		block.setLayoutData(gd);

 		Text t= fJRERoot.getTextControl(parent);
 		gd= (GridData)t.getLayoutData();
 		gd.grabExcessHorizontalSpace=true;
 		gd.widthHint= convertWidthInCharsToPixels(50);

 		t= fJavadocURL.getTextControl(parent);
 		gd= (GridData)t.getLayoutData();
 		gd.grabExcessHorizontalSpace=true;
 		gd.widthHint= convertWidthInCharsToPixels(50);

 		initializeFields();

 		return parent;
 	}

 	private void updateVMType() {
 		int selIndex= fVMTypeCombo.getSelectionIndex();
 		if (selIndex >= 0 && selIndex < fVMTypes.length) {
 			fSelectedVMType= fVMTypes[selIndex];
 		}
 		setJRELocationStatus(validateJRELocation());
 		fLibraryBlock.initializeFrom(fEditedVM, fSelectedVMType);
 		updateStatusLine();
 	}

 	public void create() {
 		super.create();
 		fVMName.setFocus();
 		selectVMType();
 	}

 	private String[] getVMTypeNames() {
 		String[] names=  new String[fVMTypes.length];
 		for (int i= 0; i < fVMTypes.length; i++) {
 			names[i]= fVMTypes[i].getName();
 		}
 		return names;
 	}

 	private void selectVMType() {
 		for (int i= 0; i < fVMTypes.length; i++) {
 			if (fSelectedVMType == fVMTypes[i]) {
 				fVMTypeCombo.selectItem(i);
 				return;
 			}
 		}
 	}

 	private void initializeFields() {
 		fVMTypeCombo.setItems(getVMTypeNames());
 		if (fEditedVM == null) {
 			fVMName.setText(""); //$NON-NLS-1$
 			fJRERoot.setText(""); //$NON-NLS-1$
 			fJavadocURL.setText(""); //$NON-NLS-1$
 			fLibraryBlock.initializeFrom(null, fSelectedVMType);
 		} else {
 			fVMTypeCombo.setEnabled(false);
 			fVMName.setText(fEditedVM.getName());
 			fJRERoot.setText(fEditedVM.getInstallLocation().getAbsolutePath());
 			URL url = fEditedVM.getJavadocLocation();
 			if (url == null) {
 				fJavadocURL.setText(""); //$NON-NLS-1$
 			} else {
 				fJavadocURL.setText(url.toExternalForm());
 			}
 			fLibraryBlock.initializeFrom(fEditedVM, fSelectedVMType);
 		}
 	}

 	private IVMInstallType getVMType() {
 		return fSelectedVMType;
 	}

 	private IStatus validateJRELocation() {
 		String locationName= fJRERoot.getText();
 		IStatus s = null;
 		File file = null;
 		if (locationName.length() == 0) {//$NON-NLS-1$
 			s = new StatusInfo(IStatus.INFO, LauncherMessages.getString("addVMDialog.enterLocation")); //$NON-NLS-1$
 		} else {
 			file= new File(locationName);
 			if (!file.exists()) {
 				s = new StatusInfo(IStatus.ERROR, LauncherMessages.getString("addVMDialog.locationNotExists")); //$NON-NLS-1$
 			} else {
 				final IStatus[] temp = new IStatus[1];
 				final File tempFile = file;
 				Runnable r = new Runnable() {
 					/**
 					 * @see java.lang.Runnable#run()
 					 */
 					public void run() {
 						temp[0] = getVMType().validateInstallLocation(tempFile);
 					}
 				};
 				BusyIndicator.showWhile(getShell().getDisplay(), r);
 				s = temp[0];
 			}
 		}
 		if (s.isOK()) {
 			fLibraryBlock.setHomeDirectory(file);
 		} else {
 			fLibraryBlock.setHomeDirectory(null);
 		}
 		fLibraryBlock.update();
 		detectJavadocLocation();
 		return s;
 	}

 	private IStatus validateJavadocURL() {
 		String text = fJavadocURL.getText();
 		if (text != null && text.length() > 0) {
 			try {
 				new URL(text);
 			} catch (MalformedURLException e) {
 				return new Status(IStatus.ERROR, JDIDebugUIPlugin.getUniqueIdentifier(), IJavaDebugUIConstants.INTERNAL_ERROR, LauncherMessages.getString("AddVMDialog.Invalid_URL_syntax_specified_for_Javadoc_location._1"), e); //$NON-NLS-1$
 			}
 		}
 		return new StatusInfo();
 	}

 	/**
 	 * Auto-detects the default javadoc location
 	 */
 	private void detectJavadocLocation() {
 		if (fAutoDetectJavadocLocation) {
 			if (getVMType() instanceof AbstractVMInstallType) {
 				AbstractVMInstallType type = (AbstractVMInstallType)getVMType();
 				URL url = type.getDefaultJavadocLocation(getInstallLocation());
 				if (url == null) {
 					fJavadocURL.setText(""); //$NON-NLS-1$
 				} else {
 					fJavadocURL.setText(url.toExternalForm());
 				}
 			}
 		}
 	}

 	private IStatus validateVMName() {
 		StatusInfo status= new StatusInfo();
 		String name= fVMName.getText();
 		if (name == null || name.trim().length() == 0) {
 			status.setInfo(LauncherMessages.getString("addVMDialog.enterName")); //$NON-NLS-1$
 		} else {
 			if (fRequestor.isDuplicateName(name) && (fEditedVM == null || !name.equals(fEditedVM.getName()))) {
 				status.setError(LauncherMessages.getString("addVMDialog.duplicateName")); //$NON-NLS-1$
 			} else {
 				IStatus s = ResourcesPlugin.getWorkspace().validateName(name, IResource.FILE);
 				if (!s.isOK()) {
 					status.setError(MessageFormat.format(LauncherMessages.getString("AddVMDialog.JRE_name_must_be_a_valid_file_name__{0}_1"), new String[]{s.getMessage()})); //$NON-NLS-1$
 				}
 			}
 		}
 		return status;
 	}

 	protected void updateStatusLine() {
 		IStatus max= null;
 		for (int i= 0; i < fStati.length; i++) {
 			IStatus curr= fStati[i];
 			if (curr.matches(IStatus.ERROR)) {
 				updateStatus(curr);
 				return;
 			}
 			if (max == null || curr.getSeverity() > max.getSeverity()) {
 				max= curr;
 			}
 		}
 		updateStatus(max);
 	}

 	private void browseForInstallDir() {
 		DirectoryDialog dialog= new DirectoryDialog(getShell());
 		dialog.setFilterPath(fJRERoot.getText());
 		dialog.setMessage(LauncherMessages.getString("addVMDialog.pickJRERootDialog.message")); //$NON-NLS-1$
 		String newPath= dialog.open();
 		if (newPath != null) {
 			fJRERoot.setText(newPath);
 		}
 	}

 	private void browseForJavadocURL() {
 		DirectoryDialog dialog= new DirectoryDialog(getShell());

 		String initPath= ""; //$NON-NLS-1$
 		URL url = getURL();
 		if (url != null && "file".equals(url.getProtocol())) { //$NON-NLS-1$
 			initPath= (new File(url.getFile())).getPath();
 		}

 		dialog.setFilterPath(initPath);
 		dialog.setMessage(LauncherMessages.getString("AddVMDialog.Select_Javadoc_location__3")); //$NON-NLS-1$
 		String res = dialog.open();
 		if (res != null) {
 			try {
 				url = (new File(res)).toURL();
 				fJavadocURL.setText(url.toExternalForm());
 			} catch (MalformedURLException e) {
 				// should not happen
 				JDIDebugUIPlugin.log(e);
 			}
 		}
 	}

 	protected URL getURL() {
 		try {
 			return new URL(fJavadocURL.getText());
 		} catch (MalformedURLException e) {
 			return null;
 		}
 	}

 	protected void okPressed() {
 		doOkPressed();
 		super.okPressed();
 	}

 	private void doOkPressed() {
 		if (fEditedVM == null) {
 			IVMInstall vm= new VMStandin(fSelectedVMType, createUniqueId(fSelectedVMType));
 			setFieldValuesToVM(vm);
 			fRequestor.vmAdded(vm);
 		} else {
 			setFieldValuesToVM(fEditedVM);
 		}
 	}

 	private String createUniqueId(IVMInstallType vmType) {
 		String id= null;
 		do {
 			id= String.valueOf(System.currentTimeMillis());
 		} while (vmType.findVMInstall(id) != null);
 		return id;
 	}

 	protected void setFieldValuesToVM(IVMInstall vm) {
 		vm.setInstallLocation(new File(fJRERoot.getText()).getAbsoluteFile());
 		vm.setName(fVMName.getText());
 		vm.setJavadocLocation(getURL());
 		fLibraryBlock.performApply(vm);
 	}

 	protected File getAbsoluteFileOrEmpty(String path) {
 		if (path == null || path.length() == 0) {
 			return new File(""); //$NON-NLS-1$
 		}
 		return new File(path).getAbsoluteFile();
 	}

 	private void setVMNameStatus(IStatus status) {
 		fStati[0]= status;
 	}

 	private void setJRELocationStatus(IStatus status) {
 		fStati[1]= status;
 	}

 	private void setJavadocURLStatus(IStatus status) {
 		fStati[2] = status;
 	}

 	protected IStatus getSystemLibraryStatus() {
 		return fStati[3];
 	}

 	protected void setSystemLibraryStatus(IStatus status) {
 		fStati[3]= status;
 	}

 	/**
 	 * Updates the status of the ok button to reflect the given status.
 	 * Subclasses may override this method to update additional buttons.
 	 * @param status the status.
 	 */
 	protected void updateButtonsEnableState(IStatus status) {
 		Button ok = getButton(IDialogConstants.OK_ID);
 		if (ok != null && !ok.isDisposed())
 			ok.setEnabled(status.getSeverity() == IStatus.OK);
 	}

 	/**
 	 * @see org.eclipse.jface.dialogs.Dialog#setButtonLayoutData(org.eclipse.swt.widgets.Button)
 	 */
 	protected void setButtonLayoutData(Button button) {
 		super.setButtonLayoutData(button);
 	}
 }
	package org.eclipse.jdt.internal.debug.ui.launcher;

	/**********************************************************************
	Copyright (c) 2002 IBM Corp. and others. All rights reserved.
	This file is made available under the terms of the Common Public License v1.0
	which accompanies this distribution, and is available at
	http://www.eclipse.org/legal/cpl-v10.html
	**********************************************************************/

	import java.io.File;
	import java.net.MalformedURLException;
	import java.net.URL;
	import java.text.MessageFormat;

	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.jdt.debug.ui.IJavaDebugUIConstants;
	import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds;
	import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
	import org.eclipse.jdt.internal.ui.dialogs.StatusDialog;
	import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
	import org.eclipse.jdt.internal.ui.wizards.dialogfields.ComboDialogField;
	import org.eclipse.jdt.internal.ui.wizards.dialogfields.DialogField;
	import org.eclipse.jdt.internal.ui.wizards.dialogfields.IDialogFieldListener;
	import org.eclipse.jdt.internal.ui.wizards.dialogfields.IStringButtonAdapter;
	import org.eclipse.jdt.internal.ui.wizards.dialogfields.StringButtonDialogField;
	import org.eclipse.jdt.internal.ui.wizards.dialogfields.StringDialogField;
	import org.eclipse.jdt.launching.AbstractVMInstallType;
	import org.eclipse.jdt.launching.IVMInstall;
	import org.eclipse.jdt.launching.IVMInstallType;
	import org.eclipse.jdt.launching.VMStandin;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.BusyIndicator;
	import org.eclipse.swt.graphics.Font;
	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.Label;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.help.WorkbenchHelp;

	public class AddVMDialog extends StatusDialog {

	private IAddVMDialogRequestor fRequestor;

	private IVMInstall fEditedVM;

	private IVMInstallType[] fVMTypes;
	private IVMInstallType fSelectedVMType;

	private ComboDialogField fVMTypeCombo;
	private VMLibraryBlock fLibraryBlock;

	private StringButtonDialogField fJRERoot;
	private StringDialogField fVMName;

	private StringButtonDialogField fJavadocURL;
	private boolean fAutoDetectJavadocLocation = false;

	private IDialogSettings fDialogSettings;

	private IStatus[] fStati;

	public AddVMDialog(IAddVMDialogRequestor requestor, Shell shell, IVMInstallType[] vmInstallTypes, IVMInstall editedVM) {
	super(shell);
	fRequestor= requestor;
	fStati= new IStatus[5];
	for (int i= 0; i < fStati.length; i++) {
	fStati[i]= new StatusInfo();
	}

	fVMTypes= vmInstallTypes;
	fSelectedVMType= editedVM != null ? editedVM.getVMInstallType() : vmInstallTypes[0];

	fEditedVM= editedVM;

	fDialogSettings= JDIDebugUIPlugin.getDefault().getDialogSettings();

	//only detect the javadoc location if not already set
	fAutoDetectJavadocLocation = fEditedVM == null \|\| fEditedVM.getJavadocLocation() == null;
	}

	/**
	* @see Windows#configureShell
	*/
	protected void configureShell(Shell newShell) {
	super.configureShell(newShell);
	WorkbenchHelp.setHelp(newShell, IJavaDebugHelpContextIds.EDIT_JRE_DIALOG);
	}

	protected void createDialogFields() {
	fVMTypeCombo= new ComboDialogField(SWT.READ_ONLY);
	fVMTypeCombo.setLabelText(LauncherMessages.getString("addVMDialog.jreType")); //$NON-NLS-1$
	fVMTypeCombo.setDialogFieldListener(new IDialogFieldListener() {
	public void dialogFieldChanged(DialogField field) {
	updateVMType();
	}
	});

	fVMName= new StringDialogField();
	fVMName.setLabelText(LauncherMessages.getString("addVMDialog.jreName")); //$NON-NLS-1$
	fVMName.setDialogFieldListener(new IDialogFieldListener() {
	public void dialogFieldChanged(DialogField field) {
	setVMNameStatus(validateVMName());
	updateStatusLine();
	}
	});

	fJRERoot= new StringButtonDialogField(new IStringButtonAdapter() {
	public void changeControlPressed(DialogField field) {
	browseForInstallDir();
	}
	});
	fJRERoot.setLabelText(LauncherMessages.getString("addVMDialog.jreHome")); //$NON-NLS-1$
	fJRERoot.setButtonLabel(LauncherMessages.getString("addVMDialog.browse1")); //$NON-NLS-1$
	fJRERoot.setDialogFieldListener(new IDialogFieldListener() {
	public void dialogFieldChanged(DialogField field) {
	setJRELocationStatus(validateJRELocation());
	updateStatusLine();
	}
	});

	fJavadocURL = new StringButtonDialogField(new IStringButtonAdapter() {
	public void changeControlPressed(DialogField field) {
	browseForJavadocURL();
	}
	});
	fJavadocURL.setLabelText(LauncherMessages.getString("AddVMDialog.Java&doc_URL__1")); //$NON-NLS-1$
	fJavadocURL.setButtonLabel(LauncherMessages.getString("AddVMDialog.Bro&wse..._2")); //$NON-NLS-1$
	fJavadocURL.setDialogFieldListener(new IDialogFieldListener() {
	public void dialogFieldChanged(DialogField field) {
	setJavadocURLStatus(validateJavadocURL());
	updateStatusLine();
	}
	});
	}

	protected String getVMName() {
	return fVMName.getText();
	}

	protected File getInstallLocation() {
	return new File(fJRERoot.getText());
	}

	protected Control createDialogArea(Composite ancestor) {
	Font font = ancestor.getFont();
	initializeDialogUnits(ancestor);
	createDialogFields();
	Composite parent= new Composite(ancestor, SWT.NULL);
	GridLayout layout= new GridLayout();
	layout.numColumns= 3;
	parent.setLayout(layout);
	parent.setFont(font);

	fVMTypeCombo.doFillIntoGrid(parent, 3);
	((GridData)fVMTypeCombo.getComboControl(null).getLayoutData()).widthHint= convertWidthInCharsToPixels(50);

	fVMName.doFillIntoGrid(parent, 3);

	fJRERoot.doFillIntoGrid(parent, 3);

	fJavadocURL.doFillIntoGrid(parent, 3);

	Label l = new Label(parent, SWT.NONE);
	l.setText(LauncherMessages.getString("AddVMDialog.JRE_system_libraries__1")); //$NON-NLS-1$
	GridData gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = 3;
	l.setLayoutData(gd);
	l.setFont(font);

	fLibraryBlock = new VMLibraryBlock(this);
	Control block = fLibraryBlock.createControl(parent);
	gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = 3;
	block.setLayoutData(gd);

	Text t= fJRERoot.getTextControl(parent);
	gd= (GridData)t.getLayoutData();
	gd.grabExcessHorizontalSpace=true;
	gd.widthHint= convertWidthInCharsToPixels(50);

	t= fJavadocURL.getTextControl(parent);
	gd= (GridData)t.getLayoutData();
	gd.grabExcessHorizontalSpace=true;
	gd.widthHint= convertWidthInCharsToPixels(50);

	initializeFields();

	return parent;
	}

	private void updateVMType() {
	int selIndex= fVMTypeCombo.getSelectionIndex();
	if (selIndex >= 0 && selIndex < fVMTypes.length) {
	fSelectedVMType= fVMTypes[selIndex];
	}
	setJRELocationStatus(validateJRELocation());
	fLibraryBlock.initializeFrom(fEditedVM, fSelectedVMType);
	updateStatusLine();
	}

	public void create() {
	super.create();
	fVMName.setFocus();
	selectVMType();
	}

	private String[] getVMTypeNames() {
	String[] names= new String[fVMTypes.length];
	for (int i= 0; i < fVMTypes.length; i++) {
	names[i]= fVMTypes[i].getName();
	}
	return names;
	}

	private void selectVMType() {
	for (int i= 0; i < fVMTypes.length; i++) {
	if (fSelectedVMType == fVMTypes[i]) {
	fVMTypeCombo.selectItem(i);
	return;
	}
	}
	}

	private void initializeFields() {
	fVMTypeCombo.setItems(getVMTypeNames());
	if (fEditedVM == null) {
	fVMName.setText(""); //$NON-NLS-1$
	fJRERoot.setText(""); //$NON-NLS-1$
	fJavadocURL.setText(""); //$NON-NLS-1$
	fLibraryBlock.initializeFrom(null, fSelectedVMType);
	} else {
	fVMTypeCombo.setEnabled(false);
	fVMName.setText(fEditedVM.getName());
	fJRERoot.setText(fEditedVM.getInstallLocation().getAbsolutePath());
	URL url = fEditedVM.getJavadocLocation();
	if (url == null) {
	fJavadocURL.setText(""); //$NON-NLS-1$
	} else {
	fJavadocURL.setText(url.toExternalForm());
	}
	fLibraryBlock.initializeFrom(fEditedVM, fSelectedVMType);
	}
	}

	private IVMInstallType getVMType() {
	return fSelectedVMType;
	}

	private IStatus validateJRELocation() {
	String locationName= fJRERoot.getText();
	IStatus s = null;
	File file = null;
	if (locationName.length() == 0) {//$NON-NLS-1$
	s = new StatusInfo(IStatus.INFO, LauncherMessages.getString("addVMDialog.enterLocation")); //$NON-NLS-1$
	} else {
	file= new File(locationName);
	if (!file.exists()) {
	s = new StatusInfo(IStatus.ERROR, LauncherMessages.getString("addVMDialog.locationNotExists")); //$NON-NLS-1$
	} else {
	final IStatus[] temp = new IStatus[1];
	final File tempFile = file;
	Runnable r = new Runnable() {
	/**
	* @see java.lang.Runnable#run()
	*/
	public void run() {
	temp[0] = getVMType().validateInstallLocation(tempFile);
	}
	};
	BusyIndicator.showWhile(getShell().getDisplay(), r);
	s = temp[0];
	}
	}
	if (s.isOK()) {
	fLibraryBlock.setHomeDirectory(file);
	} else {
	fLibraryBlock.setHomeDirectory(null);
	}
	fLibraryBlock.update();
	detectJavadocLocation();
	return s;
	}

	private IStatus validateJavadocURL() {
	String text = fJavadocURL.getText();
	if (text != null && text.length() > 0) {
	try {
	new URL(text);
	} catch (MalformedURLException e) {
	return new Status(IStatus.ERROR, JDIDebugUIPlugin.getUniqueIdentifier(), IJavaDebugUIConstants.INTERNAL_ERROR, LauncherMessages.getString("AddVMDialog.Invalid_URL_syntax_specified_for_Javadoc_location._1"), e); //$NON-NLS-1$
	}
	}
	return new StatusInfo();
	}

	/**
	* Auto-detects the default javadoc location
	*/
	private void detectJavadocLocation() {
	if (fAutoDetectJavadocLocation) {
	if (getVMType() instanceof AbstractVMInstallType) {
	AbstractVMInstallType type = (AbstractVMInstallType)getVMType();
	URL url = type.getDefaultJavadocLocation(getInstallLocation());
	if (url == null) {
	fJavadocURL.setText(""); //$NON-NLS-1$
	} else {
	fJavadocURL.setText(url.toExternalForm());
	}
	}
	}
	}

	private IStatus validateVMName() {
	StatusInfo status= new StatusInfo();
	String name= fVMName.getText();
	if (name == null \|\| name.trim().length() == 0) {
	status.setInfo(LauncherMessages.getString("addVMDialog.enterName")); //$NON-NLS-1$
	} else {
	if (fRequestor.isDuplicateName(name) && (fEditedVM == null \|\| !name.equals(fEditedVM.getName()))) {
	status.setError(LauncherMessages.getString("addVMDialog.duplicateName")); //$NON-NLS-1$
	} else {
	IStatus s = ResourcesPlugin.getWorkspace().validateName(name, IResource.FILE);
	if (!s.isOK()) {
	status.setError(MessageFormat.format(LauncherMessages.getString("AddVMDialog.JRE_name_must_be_a_valid_file_name__{0}_1"), new String[]{s.getMessage()})); //$NON-NLS-1$
	}
	}
	}
	return status;
	}

	protected void updateStatusLine() {
	IStatus max= null;
	for (int i= 0; i < fStati.length; i++) {
	IStatus curr= fStati[i];
	if (curr.matches(IStatus.ERROR)) {
	updateStatus(curr);
	return;
	}
	if (max == null \|\| curr.getSeverity() > max.getSeverity()) {
	max= curr;
	}
	}
	updateStatus(max);
	}

	private void browseForInstallDir() {
	DirectoryDialog dialog= new DirectoryDialog(getShell());
	dialog.setFilterPath(fJRERoot.getText());
	dialog.setMessage(LauncherMessages.getString("addVMDialog.pickJRERootDialog.message")); //$NON-NLS-1$
	String newPath= dialog.open();
	if (newPath != null) {
	fJRERoot.setText(newPath);
	}
	}

	private void browseForJavadocURL() {
	DirectoryDialog dialog= new DirectoryDialog(getShell());

	String initPath= ""; //$NON-NLS-1$
	URL url = getURL();
	if (url != null && "file".equals(url.getProtocol())) { //$NON-NLS-1$
	initPath= (new File(url.getFile())).getPath();
	}

	dialog.setFilterPath(initPath);
	dialog.setMessage(LauncherMessages.getString("AddVMDialog.Select_Javadoc_location__3")); //$NON-NLS-1$
	String res = dialog.open();
	if (res != null) {
	try {
	url = (new File(res)).toURL();
	fJavadocURL.setText(url.toExternalForm());
	} catch (MalformedURLException e) {
	// should not happen
	JDIDebugUIPlugin.log(e);
	}
	}
	}

	protected URL getURL() {
	try {
	return new URL(fJavadocURL.getText());
	} catch (MalformedURLException e) {
	return null;
	}
	}

	protected void okPressed() {
	doOkPressed();
	super.okPressed();
	}

	private void doOkPressed() {
	if (fEditedVM == null) {
	IVMInstall vm= new VMStandin(fSelectedVMType, createUniqueId(fSelectedVMType));
	setFieldValuesToVM(vm);
	fRequestor.vmAdded(vm);
	} else {
	setFieldValuesToVM(fEditedVM);
	}
	}

	private String createUniqueId(IVMInstallType vmType) {
	String id= null;
	do {
	id= String.valueOf(System.currentTimeMillis());
	} while (vmType.findVMInstall(id) != null);
	return id;
	}

	protected void setFieldValuesToVM(IVMInstall vm) {
	vm.setInstallLocation(new File(fJRERoot.getText()).getAbsoluteFile());
	vm.setName(fVMName.getText());
	vm.setJavadocLocation(getURL());
	fLibraryBlock.performApply(vm);
	}

	protected File getAbsoluteFileOrEmpty(String path) {
	if (path == null \|\| path.length() == 0) {
	return new File(""); //$NON-NLS-1$
	}
	return new File(path).getAbsoluteFile();
	}

	private void setVMNameStatus(IStatus status) {
	fStati[0]= status;
	}

	private void setJRELocationStatus(IStatus status) {
	fStati[1]= status;
	}

	private void setJavadocURLStatus(IStatus status) {
	fStati[2] = status;
	}

	protected IStatus getSystemLibraryStatus() {
	return fStati[3];
	}

	protected void setSystemLibraryStatus(IStatus status) {
	fStati[3]= status;
	}

	/**
	* Updates the status of the ok button to reflect the given status.
	* Subclasses may override this method to update additional buttons.
	* @param status the status.
	*/
	protected void updateButtonsEnableState(IStatus status) {
	Button ok = getButton(IDialogConstants.OK_ID);
	if (ok != null && !ok.isDisposed())
	ok.setEnabled(status.getSeverity() == IStatus.OK);
	}

	/**
	* @see org.eclipse.jface.dialogs.Dialog#setButtonLayoutData(org.eclipse.swt.widgets.Button)
	*/
	protected void setButtonLayoutData(Button button) {
	super.setButtonLayoutData(button);
	}
	}