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

 /*******************************************************************************
  * Copyright (c) 2000, 2006 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.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds;
 import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
 import org.eclipse.jdt.internal.debug.ui.SWTUtil;
 import org.eclipse.jdt.internal.debug.ui.StatusInfo;
 import org.eclipse.jdt.launching.AbstractVMInstallType;
 import org.eclipse.jdt.launching.IVMInstall;
 import org.eclipse.jdt.launching.IVMInstall2;
 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.jface.dialogs.StatusDialog;
 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.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 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.Control;
 import org.eclipse.swt.widgets.DirectoryDialog;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.PlatformUI;

 import com.ibm.icu.text.MessageFormat;

 /**
  * Provides the Add VM dialog
  */
 public class AddVMDialog extends StatusDialog {

 	private IAddVMDialogRequestor fRequestor;
 	private IVMInstall fEditedVM;
 	private IVMInstallType[] fVMTypes;
 	private IVMInstallType fSelectedVMType;
 	private Combo fVMCombo;
 	private Text fVMName;
 	private Text fVMArgs;
 	private Text fJRERoot;
 	private VMLibraryBlock fLibraryBlock;
 // the VM install's javadoc location
 	private URL fJavadocLocation = null;
 	private boolean fAutoDetectJavadocLocation = false;
 	private IStatus[] fStatus;
 	private int fPrevIndex = -1;

 	/**
 	 * Constructor
 	 * @param requestor dialog validation requestor
 	 * @param shell the parent shell
 	 * @param vmInstallTypes the types of VM installs
 	 * @param editedVM the editedVM
 	 */
 	public AddVMDialog(IAddVMDialogRequestor requestor, Shell shell, IVMInstallType[] vmInstallTypes, IVMInstall editedVM) {
 		super(shell);
 		setShellStyle(getShellStyle() | SWT.RESIZE);
 		fRequestor = requestor;
 		fStatus = new IStatus[5];
 		for (int i= 0; i < fStatus.length; i++) {
 			fStatus[i] = new StatusInfo();
 		}
 		fVMTypes = vmInstallTypes;
 		fSelectedVMType = editedVM != null ? editedVM.getVMInstallType() : vmInstallTypes[0];
 		fEditedVM = editedVM;
 	//only detect the javadoc location if not already set
 		fAutoDetectJavadocLocation = fEditedVM == null || fEditedVM.getJavadocLocation() == null;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.StatusDialog#configureShell(org.eclipse.swt.widgets.Shell)
 	 */
 	protected void configureShell(Shell newShell) {
 		super.configureShell(newShell);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell, IJavaDebugHelpContextIds.EDIT_JRE_DIALOG);
 	}

 	/**
 	 * Returns the VM name from the text control
 	 * @return
 	 */
 	protected String getVMName() {
 		return fVMName.getText();
 	}

 	/**
 	 * 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());
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
 	 */
 	protected Control createDialogArea(Composite ancestor) {
 		Composite parent = (Composite)super.createDialogArea(ancestor);
 		((GridLayout)parent.getLayout()).numColumns = 3;
 	//VM combo
 		SWTUtil.createLabel(parent, JREMessages.addVMDialog_jreType, 1);
 		fVMCombo = SWTUtil.createCombo(parent, SWT.READ_ONLY, 2, getVMTypeNames());
 	//VM name
 		SWTUtil.createLabel(parent, JREMessages.addVMDialog_jreName, 1);
 		fVMName = SWTUtil.createSingleText(parent, 2);
 	//VM root
 		SWTUtil.createLabel(parent, JREMessages.addVMDialog_jreHome, 1);
 		fJRERoot = SWTUtil.createSingleText(parent, 1);
 		Button browse = SWTUtil.createPushButton(parent, JREMessages.addVMDialog_browse1, null);
 	//VM args
 		SWTUtil.createLabel(parent, JREMessages.AddVMDialog_23, 1);
 		fVMArgs = SWTUtil.createSingleText(parent, 2);
 	//VM libraries block
 		SWTUtil.createLabel(parent, JREMessages.AddVMDialog_JRE_system_libraries__1, 3);
 		fLibraryBlock = new VMLibraryBlock(this);
 		Control block = fLibraryBlock.createControl(parent);
 		GridData gd = new GridData(GridData.FILL_BOTH);
 		gd.horizontalSpan = 3;
 		block.setLayoutData(gd);

 	//init the fields
 		initializeFields();

 	//add the listeners now to prevent them from monkeying with initialized settings
 		fVMCombo.addSelectionListener(new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent e) {}
 			public void widgetSelected(SelectionEvent e) {
 				updateVMType();
 			}
 		});
 		fVMName.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				validateVMName();
 				updateStatusLine();
 			}
 		});
 		fJRERoot.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				validateJRELocation();
 				updateStatusLine();
 			}
 		});
 		browse.addSelectionListener(new SelectionListener() {
 			public void widgetDefaultSelected(SelectionEvent e) {}
 			public void widgetSelected(SelectionEvent e) {
 				DirectoryDialog dialog = new DirectoryDialog(getShell());
 				dialog.setFilterPath(fJRERoot.getText());
 				dialog.setMessage(JREMessages.addVMDialog_pickJRERootDialog_message);
 				String newPath = dialog.open();
 				if (newPath != null) {
 					fJRERoot.setText(newPath);
 				}
 			}
 		});
 		applyDialogFont(parent);
 		return parent;
 	}

 	/**
 	 * Updates the JRE location status and inits the library block
 	 */
 	private void updateVMType() {
 		int selIndex = fVMCombo.getSelectionIndex();
 		if (selIndex == fPrevIndex) {
 			return;
 		}
 		fPrevIndex = selIndex;
 		if (selIndex >= 0 && selIndex < fVMTypes.length) {
 			fSelectedVMType= fVMTypes[selIndex];
 		}
 		validateJRELocation();
 		fLibraryBlock.initializeFrom(fEditedVM, fSelectedVMType);
 		updateStatusLine();
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.StatusDialog#create()
 	 */
 	public void create() {
 		super.create();
 		fVMName.setFocus();
 		selectVMType();
 	}

 	/**
 	 * Returns the VM type names
 	 * @return an array of strings with the names of the applicable VMs
 	 */
 	private String[] getVMTypeNames() {
 		String[] names =  new String[fVMTypes.length];
 		for (int i = 0; i < fVMTypes.length; i++) {
 			names[i]= fVMTypes[i].getName();
 		}
 		return names;
 	}

 	/**
 	 * Selects the corresponding VM for fSelectedVMType
 	 */
 	private void selectVMType() {
 		for (int i= 0; i < fVMTypes.length; i++) {
 			if (fSelectedVMType == fVMTypes[i]) {
 				if(i < fVMCombo.getItemCount()) {
 					fVMCombo.select(i);
 					return;
 				}
 			}
 		}
 	}

 	/**
 	 * Initialize the dialogs fields
 	 */
 	private void initializeFields() {
 		if (fEditedVM == null) {
 			fVMName.setText(""); //$NON-NLS-1$
 			fJRERoot.setText(""); //$NON-NLS-1$
 			fLibraryBlock.initializeFrom(null, fSelectedVMType);
 			fVMArgs.setText(""); //$NON-NLS-1$
 		} else {
 			fVMCombo.setEnabled(false);
 			fVMName.setText(fEditedVM.getName());
 			fJRERoot.setText(fEditedVM.getInstallLocation().getAbsolutePath());
 			fLibraryBlock.initializeFrom(fEditedVM, fSelectedVMType);
 			if (fEditedVM instanceof IVMInstall2) {
 				IVMInstall2 vm2 = (IVMInstall2) fEditedVM;
 				String vmArgs = vm2.getVMArgs();
 				if (vmArgs != null) {
 					fVMArgs.setText(vmArgs);
 				}
 			} else {
 				String[] vmArgs = fEditedVM.getVMArguments();
 				if (vmArgs != null) {
 					StringBuffer buffer = new StringBuffer();
 					int length= vmArgs.length;
 					if (length > 0) {
 						buffer.append(vmArgs[0]);
 						for (int i = 1; i < length; i++) {
 							buffer.append(' ').append(vmArgs[i]);
 						}
 					}
 					fVMArgs.setText(buffer.toString());
 				}
 			}
 		}
 		validateVMName();
 		updateStatusLine();
 	}

 	/**
 	 * Validates the JRE location
 	 * @return the status after validating the JRE location
 	 */
 	private IStatus validateJRELocation() {
 		String locationName = fJRERoot.getText();
 		IStatus s = null;
 		File file = null;
 		if (locationName.length() == 0) {
 			s = new StatusInfo(IStatus.INFO, 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] = fSelectedVMType.validateInstallLocation(tempFile);
 					}
 				};
 				BusyIndicator.showWhile(getShell().getDisplay(), r);
 				s = temp[0];
 			}
 		}
 		if (s.isOK()) {
 			fLibraryBlock.setHomeDirectory(file);
 			String name = fVMName.getText();
 			if (name == null || name.trim().length() == 0) {
 				// auto-generate VM name
 				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) {}
 			}
 		} else {
 			fLibraryBlock.setHomeDirectory(null);
 		}
 		fLibraryBlock.restoreDefaultLibraries();
 		detectJavadocLocation();
 		fStatus[1] = s;
 		return s;
 	}

 	/**
 	 * Auto-detects the default javadoc location
 	 */
 	private void detectJavadocLocation() {
 		if (fAutoDetectJavadocLocation) {
 			if (fSelectedVMType instanceof AbstractVMInstallType) {
 				AbstractVMInstallType type = (AbstractVMInstallType)fSelectedVMType;
 				fJavadocLocation = type.getDefaultJavadocLocation(getInstallLocation());
 			}
 		} else {
 			fJavadocLocation = fEditedVM.getJavadocLocation();
 		}
 	}

 	/**
 	 * Validates the entered name of the VM
 	 * @return the status of the name validation
 	 */
 	private IStatus validateVMName() {
 		StatusInfo status= new StatusInfo();
 		String name= fVMName.getText();
 		if (name == null || name.trim().length() == 0) {
 			status.setInfo(JREMessages.addVMDialog_enterName);
 		} else {
 			if (fRequestor.isDuplicateName(name) && (fEditedVM == null || !name.equals(fEditedVM.getName()))) {
 				status.setError(JREMessages.addVMDialog_duplicateName);
 			} else {
 				IStatus s = ResourcesPlugin.getWorkspace().validateName(name, IResource.FILE);
 				if (!s.isOK()) {
 					status.setError(MessageFormat.format(JREMessages.AddVMDialog_JRE_name_must_be_a_valid_file_name___0__1, new String[]{s.getMessage()}));
 				}
 			}
 		}
 		fStatus[0] = status;
 		return status;
 	}

 	/**
 	 * Updates the status line to show/hide messages to the user
 	 */
 	protected void updateStatusLine() {
 		IStatus max= null;
 		for (int i = 0; i < fStatus.length; i++) {
 			IStatus curr = fStatus[i];
 			if (curr.matches(IStatus.ERROR)) {
 				updateStatus(curr);
 				return;
 			}
 			if (max == null || curr.getSeverity() > max.getSeverity()) {
 				max = curr;
 			}
 		}
 		updateStatus(max);
 	}

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

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.Dialog#okPressed()
 	 */
 	protected void okPressed() {
 		if (fEditedVM == null) {
 			IVMInstall vm = new VMStandin(fSelectedVMType, createUniqueId(fSelectedVMType));
 			setFieldValuesToVM(vm);
 			fRequestor.vmAdded(vm);
 		} else {
 			setFieldValuesToVM(fEditedVM);
 		}
 		super.okPressed();
 	}

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

 	/**
 	 * init fields to the specified VM
 	 * @param vm the VM to init from
 	 */
 	protected void setFieldValuesToVM(IVMInstall vm) {
 		File dir = new File(fJRERoot.getText());
 		try {
 			vm.setInstallLocation(dir.getCanonicalFile());
 		}
 		catch (IOException e) {
 			vm.setInstallLocation(dir.getAbsoluteFile());
 		}
 		vm.setName(fVMName.getText());
 		vm.setJavadocLocation(getURL());

 		String argString = fVMArgs.getText().trim();
 		if (vm instanceof IVMInstall2) {
 			IVMInstall2 vm2 = (IVMInstall2) vm;
 			if (argString != null && argString.length() > 0) {
 				vm2.setVMArgs(argString);
 			}
 			else {
 				vm2.setVMArgs(null);
 			}
 		}
 		else {
 			if (argString != null && argString.length() > 0) {
 				vm.setVMArguments(DebugPlugin.parseArguments(argString));
 			}
 			else {
 				vm.setVMArguments(null);
 			}
 		}
 		fLibraryBlock.performApply(vm);
 	}

 	/**
 	 * returns an absolute file or an empty file if the path is either null or zero length
 	 * @param path the path to the file
 	 * @return a new file
 	 */
 	protected File getAbsoluteFileOrEmpty(String path) {
 		if (path == null || path.length() == 0) {
 			return new File(""); //$NON-NLS-1$
 		}
 		return new File(path).getAbsoluteFile();
 	}

 	/**
 	 * @return the status of the system library
 	 */
 	protected IStatus getSystemLibraryStatus() {
 		return fStatus[3];
 	}

 	/**
 	 * Allows the VM page to set the status of the current system library
 	 * @param status the specified status
 	 */
 	protected void setSystemLibraryStatus(IStatus status) {
 		fStatus[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);
 	}

 	/**
 	 * Returns the name of the section that this dialog stores its settings in
 	 *
 	 * @return String
 	 */
 	protected String getDialogSettingsSectionName() {
 		return "ADD_VM_DIALOG_SECTION"; //$NON-NLS-1$
 	}

 	 /* (non-Javadoc)
      * @see org.eclipse.jface.dialogs.Dialog#getDialogBoundsSettings()
      */
     protected IDialogSettings getDialogBoundsSettings() {
     	 IDialogSettings settings = JDIDebugUIPlugin.getDefault().getDialogSettings();
          IDialogSettings section = settings.getSection(getDialogSettingsSectionName());
          if (section == null) {
              section = settings.addNewSection(getDialogSettingsSectionName());
          }
          return section;
     }

 	protected void setButtonLayoutData(Button button) {
 		super.setButtonLayoutData(button);
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2006 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.resources.IResource;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.debug.core.DebugPlugin;
	import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds;
	import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
	import org.eclipse.jdt.internal.debug.ui.SWTUtil;
	import org.eclipse.jdt.internal.debug.ui.StatusInfo;
	import org.eclipse.jdt.launching.AbstractVMInstallType;
	import org.eclipse.jdt.launching.IVMInstall;
	import org.eclipse.jdt.launching.IVMInstall2;
	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.jface.dialogs.StatusDialog;
	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.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	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.Control;
	import org.eclipse.swt.widgets.DirectoryDialog;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.PlatformUI;

	import com.ibm.icu.text.MessageFormat;

	/**
	* Provides the Add VM dialog
	*/
	public class AddVMDialog extends StatusDialog {

	private IAddVMDialogRequestor fRequestor;
	private IVMInstall fEditedVM;
	private IVMInstallType[] fVMTypes;
	private IVMInstallType fSelectedVMType;
	private Combo fVMCombo;
	private Text fVMName;
	private Text fVMArgs;
	private Text fJRERoot;
	private VMLibraryBlock fLibraryBlock;
	// the VM install's javadoc location
	private URL fJavadocLocation = null;
	private boolean fAutoDetectJavadocLocation = false;
	private IStatus[] fStatus;
	private int fPrevIndex = -1;

	/**
	* Constructor
	* @param requestor dialog validation requestor
	* @param shell the parent shell
	* @param vmInstallTypes the types of VM installs
	* @param editedVM the editedVM
	*/
	public AddVMDialog(IAddVMDialogRequestor requestor, Shell shell, IVMInstallType[] vmInstallTypes, IVMInstall editedVM) {
	super(shell);
	setShellStyle(getShellStyle() \| SWT.RESIZE);
	fRequestor = requestor;
	fStatus = new IStatus[5];
	for (int i= 0; i < fStatus.length; i++) {
	fStatus[i] = new StatusInfo();
	}
	fVMTypes = vmInstallTypes;
	fSelectedVMType = editedVM != null ? editedVM.getVMInstallType() : vmInstallTypes[0];
	fEditedVM = editedVM;
	//only detect the javadoc location if not already set
	fAutoDetectJavadocLocation = fEditedVM == null \|\| fEditedVM.getJavadocLocation() == null;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.StatusDialog#configureShell(org.eclipse.swt.widgets.Shell)
	*/
	protected void configureShell(Shell newShell) {
	super.configureShell(newShell);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell, IJavaDebugHelpContextIds.EDIT_JRE_DIALOG);
	}

	/**
	* Returns the VM name from the text control
	* @return
	*/
	protected String getVMName() {
	return fVMName.getText();
	}

	/**
	* 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());
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
	*/
	protected Control createDialogArea(Composite ancestor) {
	Composite parent = (Composite)super.createDialogArea(ancestor);
	((GridLayout)parent.getLayout()).numColumns = 3;
	//VM combo
	SWTUtil.createLabel(parent, JREMessages.addVMDialog_jreType, 1);
	fVMCombo = SWTUtil.createCombo(parent, SWT.READ_ONLY, 2, getVMTypeNames());
	//VM name
	SWTUtil.createLabel(parent, JREMessages.addVMDialog_jreName, 1);
	fVMName = SWTUtil.createSingleText(parent, 2);
	//VM root
	SWTUtil.createLabel(parent, JREMessages.addVMDialog_jreHome, 1);
	fJRERoot = SWTUtil.createSingleText(parent, 1);
	Button browse = SWTUtil.createPushButton(parent, JREMessages.addVMDialog_browse1, null);
	//VM args
	SWTUtil.createLabel(parent, JREMessages.AddVMDialog_23, 1);
	fVMArgs = SWTUtil.createSingleText(parent, 2);
	//VM libraries block
	SWTUtil.createLabel(parent, JREMessages.AddVMDialog_JRE_system_libraries__1, 3);
	fLibraryBlock = new VMLibraryBlock(this);
	Control block = fLibraryBlock.createControl(parent);
	GridData gd = new GridData(GridData.FILL_BOTH);
	gd.horizontalSpan = 3;
	block.setLayoutData(gd);

	//init the fields
	initializeFields();

	//add the listeners now to prevent them from monkeying with initialized settings
	fVMCombo.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {}
	public void widgetSelected(SelectionEvent e) {
	updateVMType();
	}
	});
	fVMName.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	validateVMName();
	updateStatusLine();
	}
	});
	fJRERoot.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	validateJRELocation();
	updateStatusLine();
	}
	});
	browse.addSelectionListener(new SelectionListener() {
	public void widgetDefaultSelected(SelectionEvent e) {}
	public void widgetSelected(SelectionEvent e) {
	DirectoryDialog dialog = new DirectoryDialog(getShell());
	dialog.setFilterPath(fJRERoot.getText());
	dialog.setMessage(JREMessages.addVMDialog_pickJRERootDialog_message);
	String newPath = dialog.open();
	if (newPath != null) {
	fJRERoot.setText(newPath);
	}
	}
	});
	applyDialogFont(parent);
	return parent;
	}

	/**
	* Updates the JRE location status and inits the library block
	*/
	private void updateVMType() {
	int selIndex = fVMCombo.getSelectionIndex();
	if (selIndex == fPrevIndex) {
	return;
	}
	fPrevIndex = selIndex;
	if (selIndex >= 0 && selIndex < fVMTypes.length) {
	fSelectedVMType= fVMTypes[selIndex];
	}
	validateJRELocation();
	fLibraryBlock.initializeFrom(fEditedVM, fSelectedVMType);
	updateStatusLine();
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.StatusDialog#create()
	*/
	public void create() {
	super.create();
	fVMName.setFocus();
	selectVMType();
	}

	/**
	* Returns the VM type names
	* @return an array of strings with the names of the applicable VMs
	*/
	private String[] getVMTypeNames() {
	String[] names = new String[fVMTypes.length];
	for (int i = 0; i < fVMTypes.length; i++) {
	names[i]= fVMTypes[i].getName();
	}
	return names;
	}

	/**
	* Selects the corresponding VM for fSelectedVMType
	*/
	private void selectVMType() {
	for (int i= 0; i < fVMTypes.length; i++) {
	if (fSelectedVMType == fVMTypes[i]) {
	if(i < fVMCombo.getItemCount()) {
	fVMCombo.select(i);
	return;
	}
	}
	}
	}

	/**
	* Initialize the dialogs fields
	*/
	private void initializeFields() {
	if (fEditedVM == null) {
	fVMName.setText(""); //$NON-NLS-1$
	fJRERoot.setText(""); //$NON-NLS-1$
	fLibraryBlock.initializeFrom(null, fSelectedVMType);
	fVMArgs.setText(""); //$NON-NLS-1$
	} else {
	fVMCombo.setEnabled(false);
	fVMName.setText(fEditedVM.getName());
	fJRERoot.setText(fEditedVM.getInstallLocation().getAbsolutePath());
	fLibraryBlock.initializeFrom(fEditedVM, fSelectedVMType);
	if (fEditedVM instanceof IVMInstall2) {
	IVMInstall2 vm2 = (IVMInstall2) fEditedVM;
	String vmArgs = vm2.getVMArgs();
	if (vmArgs != null) {
	fVMArgs.setText(vmArgs);
	}
	} else {
	String[] vmArgs = fEditedVM.getVMArguments();
	if (vmArgs != null) {
	StringBuffer buffer = new StringBuffer();
	int length= vmArgs.length;
	if (length > 0) {
	buffer.append(vmArgs[0]);
	for (int i = 1; i < length; i++) {
	buffer.append(' ').append(vmArgs[i]);
	}
	}
	fVMArgs.setText(buffer.toString());
	}
	}
	}
	validateVMName();
	updateStatusLine();
	}

	/**
	* Validates the JRE location
	* @return the status after validating the JRE location
	*/
	private IStatus validateJRELocation() {
	String locationName = fJRERoot.getText();
	IStatus s = null;
	File file = null;
	if (locationName.length() == 0) {
	s = new StatusInfo(IStatus.INFO, 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] = fSelectedVMType.validateInstallLocation(tempFile);
	}
	};
	BusyIndicator.showWhile(getShell().getDisplay(), r);
	s = temp[0];
	}
	}
	if (s.isOK()) {
	fLibraryBlock.setHomeDirectory(file);
	String name = fVMName.getText();
	if (name == null \|\| name.trim().length() == 0) {
	// auto-generate VM name
	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) {}
	}
	} else {
	fLibraryBlock.setHomeDirectory(null);
	}
	fLibraryBlock.restoreDefaultLibraries();
	detectJavadocLocation();
	fStatus[1] = s;
	return s;
	}

	/**
	* Auto-detects the default javadoc location
	*/
	private void detectJavadocLocation() {
	if (fAutoDetectJavadocLocation) {
	if (fSelectedVMType instanceof AbstractVMInstallType) {
	AbstractVMInstallType type = (AbstractVMInstallType)fSelectedVMType;
	fJavadocLocation = type.getDefaultJavadocLocation(getInstallLocation());
	}
	} else {
	fJavadocLocation = fEditedVM.getJavadocLocation();
	}
	}

	/**
	* Validates the entered name of the VM
	* @return the status of the name validation
	*/
	private IStatus validateVMName() {
	StatusInfo status= new StatusInfo();
	String name= fVMName.getText();
	if (name == null \|\| name.trim().length() == 0) {
	status.setInfo(JREMessages.addVMDialog_enterName);
	} else {
	if (fRequestor.isDuplicateName(name) && (fEditedVM == null \|\| !name.equals(fEditedVM.getName()))) {
	status.setError(JREMessages.addVMDialog_duplicateName);
	} else {
	IStatus s = ResourcesPlugin.getWorkspace().validateName(name, IResource.FILE);
	if (!s.isOK()) {
	status.setError(MessageFormat.format(JREMessages.AddVMDialog_JRE_name_must_be_a_valid_file_name___0__1, new String[]{s.getMessage()}));
	}
	}
	}
	fStatus[0] = status;
	return status;
	}

	/**
	* Updates the status line to show/hide messages to the user
	*/
	protected void updateStatusLine() {
	IStatus max= null;
	for (int i = 0; i < fStatus.length; i++) {
	IStatus curr = fStatus[i];
	if (curr.matches(IStatus.ERROR)) {
	updateStatus(curr);
	return;
	}
	if (max == null \|\| curr.getSeverity() > max.getSeverity()) {
	max = curr;
	}
	}
	updateStatus(max);
	}

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

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.Dialog#okPressed()
	*/
	protected void okPressed() {
	if (fEditedVM == null) {
	IVMInstall vm = new VMStandin(fSelectedVMType, createUniqueId(fSelectedVMType));
	setFieldValuesToVM(vm);
	fRequestor.vmAdded(vm);
	} else {
	setFieldValuesToVM(fEditedVM);
	}
	super.okPressed();
	}

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

	/**
	* init fields to the specified VM
	* @param vm the VM to init from
	*/
	protected void setFieldValuesToVM(IVMInstall vm) {
	File dir = new File(fJRERoot.getText());
	try {
	vm.setInstallLocation(dir.getCanonicalFile());
	}
	catch (IOException e) {
	vm.setInstallLocation(dir.getAbsoluteFile());
	}
	vm.setName(fVMName.getText());
	vm.setJavadocLocation(getURL());

	String argString = fVMArgs.getText().trim();
	if (vm instanceof IVMInstall2) {
	IVMInstall2 vm2 = (IVMInstall2) vm;
	if (argString != null && argString.length() > 0) {
	vm2.setVMArgs(argString);
	}
	else {
	vm2.setVMArgs(null);
	}
	}
	else {
	if (argString != null && argString.length() > 0) {
	vm.setVMArguments(DebugPlugin.parseArguments(argString));
	}
	else {
	vm.setVMArguments(null);
	}
	}
	fLibraryBlock.performApply(vm);
	}

	/**
	* returns an absolute file or an empty file if the path is either null or zero length
	* @param path the path to the file
	* @return a new file
	*/
	protected File getAbsoluteFileOrEmpty(String path) {
	if (path == null \|\| path.length() == 0) {
	return new File(""); //$NON-NLS-1$
	}
	return new File(path).getAbsoluteFile();
	}

	/**
	* @return the status of the system library
	*/
	protected IStatus getSystemLibraryStatus() {
	return fStatus[3];
	}

	/**
	* Allows the VM page to set the status of the current system library
	* @param status the specified status
	*/
	protected void setSystemLibraryStatus(IStatus status) {
	fStatus[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);
	}

	/**
	* Returns the name of the section that this dialog stores its settings in
	*
	* @return String
	*/
	protected String getDialogSettingsSectionName() {
	return "ADD_VM_DIALOG_SECTION"; //$NON-NLS-1$
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.Dialog#getDialogBoundsSettings()
	*/
	protected IDialogSettings getDialogBoundsSettings() {
	IDialogSettings settings = JDIDebugUIPlugin.getDefault().getDialogSettings();
	IDialogSettings section = settings.getSection(getDialogSettingsSectionName());
	if (section == null) {
	section = settings.addNewSection(getDialogSettingsSectionName());
	}
	return section;
	}

	protected void setButtonLayoutData(Button button) {
	super.setButtonLayoutData(button);
	}

	}