org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/importexport/breakpoints/WizardExportBreakpointsPage.java - gerrit/platform/eclipse.platform.debug - Git at Google

 /*******************************************************************************
  * Copyright (c) 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.debug.internal.ui.importexport.breakpoints;

 import java.lang.reflect.InvocationTargetException;
 import com.ibm.icu.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.List;

 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.debug.core.model.IBreakpoint;
 import org.eclipse.debug.internal.ui.IDebugHelpContextIds;
 import org.eclipse.debug.internal.ui.IInternalDebugUIConstants;
 import org.eclipse.debug.internal.ui.SWTUtil;
 import org.eclipse.debug.internal.ui.views.breakpoints.BreakpointsViewer;
 import org.eclipse.debug.ui.DebugUITools;
 import org.eclipse.debug.ui.actions.ExportBreakpointsOperation;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.dialogs.IMessageProvider;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.viewers.CheckStateChangedEvent;
 import org.eclipse.jface.viewers.ICheckStateListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.wizard.WizardPage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Font;
 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.Event;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Listener;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.swt.widgets.Widget;
 import org.eclipse.ui.PlatformUI;

 /**
  * <p>
  * This class provides an internal implementation of a WizardPage, which is used
  * in the Export Breakpoints wizard.
  * </p>
  * <p>
  * The implementation presents the breakpoints to the user as they are shown in
  * their current breakpoint view.
  * </p>
  * <p>
  * Possible extensions would include:
  * <ul>
  * <li> Able to change the views as in the breakpoints view itself
  * <li> Able to reorder groups from within the wizard - easier in the viewer itself though
  * </ul>
  * </p>
  * This class is used by <code>WizardExportBreakpoints</code>
  *
  * @since 3.2
  */
 public class WizardExportBreakpointsPage extends WizardPage implements Listener {

 	// widgets
 	private Button fOverwriteExistingFilesCheckbox = null;
 	private Text fDestinationNameField = null;
 	private Button fDestinationBrowseButton = null;
 	private IPath fPath = null;
 	private EmbeddedBreakpointsViewer fTView = null;
 	private IStructuredSelection fSelection = null;
 	private Button fSelectAll = null;
 	private Button fDeselectAll = null;

 	//state constants
 	private static final String OVERWRITE_ALL_STATE = "overwrite"; //$NON-NLS-1$
 	private static final String DESTINATION_FILE_NAME = "filename"; //$NON-NLS-1$

 	/**
 	 * This is the default constructor. It accepts the name for the tab as a
 	 * parameter and an existing selection
 	 *
 	 * @param pageName the name of the page
 	 */
 	public WizardExportBreakpointsPage(String pageName, IStructuredSelection selection) {
 		super(pageName, ImportExportMessages.WizardExportBreakpoints_0, null);
 		fSelection = selection;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
 	 */
 	public void handleEvent(Event event) {
 		Widget source = event.widget;
 		if (source == fDestinationBrowseButton) {
 			handleDestinationBrowseButtonPressed();
 		}
 		else if (source == fDestinationNameField) {
 			handlePathTextModifiedEvent();
 		}
 		else if(source == fSelectAll) {
 			handleSelectAllPressed();
 		}
 		else if(source == fDeselectAll) {
 			handleDeselectAllPressed();
 		}
 	}

 	/**
 	 * Handles the select all button pressed
 	 *
 	 */
 	private void handleSelectAllPressed() {
 		BreakpointsViewer viewer = fTView.getViewer();
 		viewer.getTree().selectAll();
 		viewer.setCheckedElements(((IStructuredSelection)viewer.getSelection()).toArray());
 		viewer.setGrayedElements(new Object[] {});
 		viewer.getTree().deselectAll();
 		setPageComplete(detectPageComplete());
 	}

 	/**
 	 * Handles the deselect all button pressed
 	 *
 	 */
 	private void handleDeselectAllPressed() {
 		BreakpointsViewer viewer = fTView.getViewer();
 		viewer.setCheckedElements(new Object[] {});
 		viewer.setGrayedElements(new Object[] {});
 		setPageComplete(detectPageComplete());
 	}

 	/**
 	 * This method handles the modified event fomr the path combobox.
 	 */
 	protected void handlePathTextModifiedEvent() {
 		setPageComplete(detectPageComplete());
 	}

 	/**
 	 * Open the SaveAsDialog so the user can save the listing of selected breakpoints
 	 */
 	protected void handleDestinationBrowseButtonPressed() {
 		FileDialog dialog = new FileDialog(getContainer().getShell(), SWT.SAVE);
 		dialog.setFilterExtensions(new String[]{"*."+IImportExportConstants.EXTENSION});  //$NON-NLS-1$
 		dialog.setText(ImportExportMessages.WizardExportBreakpoints_0);
 		String file = dialog.open();
 		if(file != null) {
 			fPath = new Path(file);
 			if (fPath != null) {
 				setErrorMessage(null);
 				if(fPath.getFileExtension() == null) {
 					fPath = fPath.addFileExtension(IImportExportConstants.EXTENSION);
 				}
 				else if(!fPath.getFileExtension().equals(IImportExportConstants.EXTENSION)) {
 					fPath = fPath.addFileExtension(IImportExportConstants.EXTENSION);
 				}
 				fDestinationNameField.setText(fPath.toString());
 			}
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
 	 */
 	public void createControl(Composite parent) {
 		initializeDialogUnits(parent);
 		Composite composite = new Composite(parent, SWT.NULL);
 		composite.setLayout(new GridLayout());
 		composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));

 		fTView = new EmbeddedBreakpointsViewer(composite, DebugPlugin.getDefault().getBreakpointManager(), fSelection);
 		fTView.getViewer().addCheckStateListener(new ICheckStateListener() {
 			public void checkStateChanged(CheckStateChangedEvent event) {
 				setPageComplete(detectPageComplete());
 			}
 		});
 		fTView.getViewer().setSelection(fSelection);
 		createButtonsGroup(composite);
 		createDestinationGroup(composite);
 		createOptionsGroup(composite);
 		setControl(composite);
 		setPageComplete(detectPageComplete());
 		restoreWidgetState();
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IDebugHelpContextIds.EXPORT_BREAKPOINTS_WIZARD_PAGE);

 		Dialog.applyDialogFont(parent);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.dialogs.IDialogPage#getImage()
 	 */
 	public Image getImage() {
 		return DebugUITools.getImage(IInternalDebugUIConstants.IMG_WIZBAN_EXPORT_BREAKPOINTS);
 	}

 	/**
      * Creates the buttons for selecting all or none of the elements.
      *
      * @param parent the parent control
      */
     private void createButtonsGroup(Composite parent) {
         Composite composite = new Composite(parent, SWT.NONE);
         composite.setFont(parent.getFont());
         GridLayout layout = new GridLayout();
         layout.numColumns = 3;
         layout.makeColumnsEqualWidth = true;
         composite.setLayout(layout);
         composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));
         fSelectAll = SWTUtil.createPushButton(composite, ImportExportMessages.WizardBreakpointsPage_1, null);
         fSelectAll.addListener(SWT.Selection, this);
 		fDeselectAll = SWTUtil.createPushButton(composite, ImportExportMessages.WizardBreakpointsPage_2, null);
 		fDeselectAll.addListener(SWT.Selection, this);
     }

 	/**
 	 * This method is used to determine if the page can be "finished".
 	 *
 	 * To be determined "finishable" there must be a save path and there must be
 	 * a selection in the tree.
 	 *
 	 * @return if the prerequesites of the wizard are met to allow the wizard to complete.
 	 */
 	private boolean detectPageComplete() {
 		boolean emptyFile = fDestinationNameField.getText().trim().equals(""); //$NON-NLS-1$
 		if (emptyFile) {
 			setMessage(ImportExportMessages.WizardExportBreakpointsPage_0, IMessageProvider.NONE);
 			return false;
 		}
 		int size = fTView.getCheckedElements().size();
 		if (size == 0) {
 			setMessage(ImportExportMessages.WizardExportBreakpointsPage_1, IMessageProvider.ERROR);
 			return false;
 		}
 		setMessage(ImportExportMessages.WizardBreakpointsPage_4);
 		return true;
 	}

 	/**
 	 * Create the Options specification widgets.
 	 *
 	 * @param parent the parent to add this
 	 */
 	protected void createOptionsGroup(Composite parent) {
 		Font font = parent.getFont();
 		// Options group
 		Group OptionsGroup = new Group(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		OptionsGroup.setLayout(layout);
 		OptionsGroup.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL));
 		OptionsGroup.setText(ImportExportMessages.WizardBreakpointsPage_5);
 		OptionsGroup.setFont(parent.getFont());
 		fOverwriteExistingFilesCheckbox = new Button(OptionsGroup, SWT.CHECK | SWT.LEFT);
 		fOverwriteExistingFilesCheckbox.setText(ImportExportMessages.WizardBreakpointsPage_6);
 		fOverwriteExistingFilesCheckbox.setFont(font);
 	}

 	/**
 	 * Create the export destination specification widgets
 	 *
 	 * @param parent org.eclipse.swt.widgets.Composite
 	 */
 	protected void createDestinationGroup(Composite parent) {
 		Font font = parent.getFont();
 		// destination specification group
 		Composite destinationSelectionGroup = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 3;
 		destinationSelectionGroup.setLayout(layout);
 		destinationSelectionGroup.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
 		destinationSelectionGroup.setFont(font);
 		Label destinationLabel = new Label(destinationSelectionGroup, SWT.NONE);
 		destinationLabel.setText(ImportExportMessages.WizardBreakpointsPage_7);
 		destinationLabel.setFont(font);
 		fDestinationNameField = new Text(destinationSelectionGroup, SWT.BORDER);
 		fDestinationNameField.addListener(SWT.Modify, this);
 		GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
 		fDestinationNameField.setLayoutData(data);
 		fDestinationNameField.setFont(font);
 		fDestinationBrowseButton = new Button(destinationSelectionGroup, SWT.PUSH);
 		fDestinationBrowseButton.setText(ImportExportMessages.WizardBreakpointsPage_8);
 		fDestinationBrowseButton.addListener(SWT.Selection, this);
 		fDestinationBrowseButton.setFont(font);
 		setButtonLayoutData(fDestinationBrowseButton);
 	}

 	/**
 	 * Save the state of the widgets select, for successive invocations of the wizard
 	 */
 	private void saveWidgetState() {
 		IDialogSettings settings = getDialogSettings();
 		if(settings != null) {
 			settings.put(OVERWRITE_ALL_STATE, fOverwriteExistingFilesCheckbox.getSelection());
 			settings.put(DESTINATION_FILE_NAME, fDestinationNameField.getText().trim());
 		}
 	}

 	/**
 	 * Restores the state of the wizard from previous invocations
 	 */
 	private void restoreWidgetState() {
 		IDialogSettings settings = getDialogSettings();
 		if(settings != null) {
 			fOverwriteExistingFilesCheckbox.setSelection(Boolean.valueOf(settings.get(OVERWRITE_ALL_STATE)).booleanValue());
 			String filename = settings.get(DESTINATION_FILE_NAME);
 			if (filename != null) {
 				fDestinationNameField.setText(filename);
 			}
 		}
 	}

 	/**
 	 * The Finish button is clicked on the main wizard
 	 * dialog to export the breakpoints, we write them out with all persistnat
 	 * information to a simple XML file via the use of XMLMemento.
 	 *
 	 * @return if the save operation was successful or not
 	 */
 	public boolean finish() {
 		try {
 			//name typed in without using selection box
 			if(fPath == null) {
 				fPath = new Path(fDestinationNameField.getText().trim());
 				if(fPath.getFileExtension() == null) {
 					fPath = fPath.addFileExtension(IImportExportConstants.EXTENSION);
 				}
 				else if(!fPath.getFileExtension().equals(IImportExportConstants.EXTENSION)) {
 					fPath = fPath.addFileExtension(IImportExportConstants.EXTENSION);
 				}
 			}
 			saveWidgetState();
 			if(fPath.toFile().exists() && !fOverwriteExistingFilesCheckbox.getSelection()) {
 				if (!MessageDialog.openQuestion(null, ImportExportMessages.WizardBreakpointsPage_12, MessageFormat.format(ImportExportMessages.ImportExportOperations_0, new String[] {fPath.toPortableString()}))) {
 					return false;
 				}
 			}
 			// collect breakpoints
 			Object[] elements = fTView.getCheckedElements().toArray();
 			List breakpoints = new ArrayList();
 			for (int i = 0; i < elements.length; i++) {
 				Object object = elements[i];
 				if (object instanceof IBreakpoint) {
 					breakpoints.add(object);
 				}
 			}
 			getContainer().run(true, true, new ExportBreakpointsOperation((IBreakpoint[]) breakpoints.toArray(new IBreakpoint[breakpoints.size()]), fPath.toOSString()));
 		}
 		catch (InterruptedException e) {
 			DebugPlugin.log(e);
 			return false;
 		}
 		catch (InvocationTargetException e) {
 			DebugPlugin.log(e);
 			return false;
 		}
 		return true;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 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.debug.internal.ui.importexport.breakpoints;

	import java.lang.reflect.InvocationTargetException;
	import com.ibm.icu.text.MessageFormat;
	import java.util.ArrayList;
	import java.util.List;

	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.debug.core.DebugPlugin;
	import org.eclipse.debug.core.model.IBreakpoint;
	import org.eclipse.debug.internal.ui.IDebugHelpContextIds;
	import org.eclipse.debug.internal.ui.IInternalDebugUIConstants;
	import org.eclipse.debug.internal.ui.SWTUtil;
	import org.eclipse.debug.internal.ui.views.breakpoints.BreakpointsViewer;
	import org.eclipse.debug.ui.DebugUITools;
	import org.eclipse.debug.ui.actions.ExportBreakpointsOperation;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.dialogs.IMessageProvider;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.viewers.CheckStateChangedEvent;
	import org.eclipse.jface.viewers.ICheckStateListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.wizard.WizardPage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.graphics.Font;
	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.Event;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Listener;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.swt.widgets.Widget;
	import org.eclipse.ui.PlatformUI;

	/**
	* <p>
	* This class provides an internal implementation of a WizardPage, which is used
	* in the Export Breakpoints wizard.
	* </p>
	* <p>
	* The implementation presents the breakpoints to the user as they are shown in
	* their current breakpoint view.
	* </p>
	* <p>
	* Possible extensions would include:
	* <ul>
	* <li> Able to change the views as in the breakpoints view itself
	* <li> Able to reorder groups from within the wizard - easier in the viewer itself though
	* </ul>
	* </p>
	* This class is used by <code>WizardExportBreakpoints</code>
	*
	* @since 3.2
	*/
	public class WizardExportBreakpointsPage extends WizardPage implements Listener {

	// widgets
	private Button fOverwriteExistingFilesCheckbox = null;
	private Text fDestinationNameField = null;
	private Button fDestinationBrowseButton = null;
	private IPath fPath = null;
	private EmbeddedBreakpointsViewer fTView = null;
	private IStructuredSelection fSelection = null;
	private Button fSelectAll = null;
	private Button fDeselectAll = null;

	//state constants
	private static final String OVERWRITE_ALL_STATE = "overwrite"; //$NON-NLS-1$
	private static final String DESTINATION_FILE_NAME = "filename"; //$NON-NLS-1$

	/**
	* This is the default constructor. It accepts the name for the tab as a
	* parameter and an existing selection
	*
	* @param pageName the name of the page
	*/
	public WizardExportBreakpointsPage(String pageName, IStructuredSelection selection) {
	super(pageName, ImportExportMessages.WizardExportBreakpoints_0, null);
	fSelection = selection;
	}

	/* (non-Javadoc)
	* @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
	*/
	public void handleEvent(Event event) {
	Widget source = event.widget;
	if (source == fDestinationBrowseButton) {
	handleDestinationBrowseButtonPressed();
	}
	else if (source == fDestinationNameField) {
	handlePathTextModifiedEvent();
	}
	else if(source == fSelectAll) {
	handleSelectAllPressed();
	}
	else if(source == fDeselectAll) {
	handleDeselectAllPressed();
	}
	}

	/**
	* Handles the select all button pressed
	*
	*/
	private void handleSelectAllPressed() {
	BreakpointsViewer viewer = fTView.getViewer();
	viewer.getTree().selectAll();
	viewer.setCheckedElements(((IStructuredSelection)viewer.getSelection()).toArray());
	viewer.setGrayedElements(new Object[] {});
	viewer.getTree().deselectAll();
	setPageComplete(detectPageComplete());
	}

	/**
	* Handles the deselect all button pressed
	*
	*/
	private void handleDeselectAllPressed() {
	BreakpointsViewer viewer = fTView.getViewer();
	viewer.setCheckedElements(new Object[] {});
	viewer.setGrayedElements(new Object[] {});
	setPageComplete(detectPageComplete());
	}

	/**
	* This method handles the modified event fomr the path combobox.
	*/
	protected void handlePathTextModifiedEvent() {
	setPageComplete(detectPageComplete());
	}

	/**
	* Open the SaveAsDialog so the user can save the listing of selected breakpoints
	*/
	protected void handleDestinationBrowseButtonPressed() {
	FileDialog dialog = new FileDialog(getContainer().getShell(), SWT.SAVE);
	dialog.setFilterExtensions(new String[]{"*."+IImportExportConstants.EXTENSION}); //$NON-NLS-1$
	dialog.setText(ImportExportMessages.WizardExportBreakpoints_0);
	String file = dialog.open();
	if(file != null) {
	fPath = new Path(file);
	if (fPath != null) {
	setErrorMessage(null);
	if(fPath.getFileExtension() == null) {
	fPath = fPath.addFileExtension(IImportExportConstants.EXTENSION);
	}
	else if(!fPath.getFileExtension().equals(IImportExportConstants.EXTENSION)) {
	fPath = fPath.addFileExtension(IImportExportConstants.EXTENSION);
	}
	fDestinationNameField.setText(fPath.toString());
	}
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
	*/
	public void createControl(Composite parent) {
	initializeDialogUnits(parent);
	Composite composite = new Composite(parent, SWT.NULL);
	composite.setLayout(new GridLayout());
	composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL \| GridData.HORIZONTAL_ALIGN_FILL));

	fTView = new EmbeddedBreakpointsViewer(composite, DebugPlugin.getDefault().getBreakpointManager(), fSelection);
	fTView.getViewer().addCheckStateListener(new ICheckStateListener() {
	public void checkStateChanged(CheckStateChangedEvent event) {
	setPageComplete(detectPageComplete());
	}
	});
	fTView.getViewer().setSelection(fSelection);
	createButtonsGroup(composite);
	createDestinationGroup(composite);
	createOptionsGroup(composite);
	setControl(composite);
	setPageComplete(detectPageComplete());
	restoreWidgetState();
	PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IDebugHelpContextIds.EXPORT_BREAKPOINTS_WIZARD_PAGE);

	Dialog.applyDialogFont(parent);
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.dialogs.IDialogPage#getImage()
	*/
	public Image getImage() {
	return DebugUITools.getImage(IInternalDebugUIConstants.IMG_WIZBAN_EXPORT_BREAKPOINTS);
	}

	/**
	* Creates the buttons for selecting all or none of the elements.
	*
	* @param parent the parent control
	*/
	private void createButtonsGroup(Composite parent) {
	Composite composite = new Composite(parent, SWT.NONE);
	composite.setFont(parent.getFont());
	GridLayout layout = new GridLayout();
	layout.numColumns = 3;
	layout.makeColumnsEqualWidth = true;
	composite.setLayout(layout);
	composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL \| GridData.HORIZONTAL_ALIGN_FILL));
	fSelectAll = SWTUtil.createPushButton(composite, ImportExportMessages.WizardBreakpointsPage_1, null);
	fSelectAll.addListener(SWT.Selection, this);
	fDeselectAll = SWTUtil.createPushButton(composite, ImportExportMessages.WizardBreakpointsPage_2, null);
	fDeselectAll.addListener(SWT.Selection, this);
	}

	/**
	* This method is used to determine if the page can be "finished".
	*
	* To be determined "finishable" there must be a save path and there must be
	* a selection in the tree.
	*
	* @return if the prerequesites of the wizard are met to allow the wizard to complete.
	*/
	private boolean detectPageComplete() {
	boolean emptyFile = fDestinationNameField.getText().trim().equals(""); //$NON-NLS-1$
	if (emptyFile) {
	setMessage(ImportExportMessages.WizardExportBreakpointsPage_0, IMessageProvider.NONE);
	return false;
	}
	int size = fTView.getCheckedElements().size();
	if (size == 0) {
	setMessage(ImportExportMessages.WizardExportBreakpointsPage_1, IMessageProvider.ERROR);
	return false;
	}
	setMessage(ImportExportMessages.WizardBreakpointsPage_4);
	return true;
	}

	/**
	* Create the Options specification widgets.
	*
	* @param parent the parent to add this
	*/
	protected void createOptionsGroup(Composite parent) {
	Font font = parent.getFont();
	// Options group
	Group OptionsGroup = new Group(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	OptionsGroup.setLayout(layout);
	OptionsGroup.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL));
	OptionsGroup.setText(ImportExportMessages.WizardBreakpointsPage_5);
	OptionsGroup.setFont(parent.getFont());
	fOverwriteExistingFilesCheckbox = new Button(OptionsGroup, SWT.CHECK \| SWT.LEFT);
	fOverwriteExistingFilesCheckbox.setText(ImportExportMessages.WizardBreakpointsPage_6);
	fOverwriteExistingFilesCheckbox.setFont(font);
	}

	/**
	* Create the export destination specification widgets
	*
	* @param parent org.eclipse.swt.widgets.Composite
	*/
	protected void createDestinationGroup(Composite parent) {
	Font font = parent.getFont();
	// destination specification group
	Composite destinationSelectionGroup = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 3;
	destinationSelectionGroup.setLayout(layout);
	destinationSelectionGroup.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.VERTICAL_ALIGN_FILL));
	destinationSelectionGroup.setFont(font);
	Label destinationLabel = new Label(destinationSelectionGroup, SWT.NONE);
	destinationLabel.setText(ImportExportMessages.WizardBreakpointsPage_7);
	destinationLabel.setFont(font);
	fDestinationNameField = new Text(destinationSelectionGroup, SWT.BORDER);
	fDestinationNameField.addListener(SWT.Modify, this);
	GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL);
	fDestinationNameField.setLayoutData(data);
	fDestinationNameField.setFont(font);
	fDestinationBrowseButton = new Button(destinationSelectionGroup, SWT.PUSH);
	fDestinationBrowseButton.setText(ImportExportMessages.WizardBreakpointsPage_8);
	fDestinationBrowseButton.addListener(SWT.Selection, this);
	fDestinationBrowseButton.setFont(font);
	setButtonLayoutData(fDestinationBrowseButton);
	}

	/**
	* Save the state of the widgets select, for successive invocations of the wizard
	*/
	private void saveWidgetState() {
	IDialogSettings settings = getDialogSettings();
	if(settings != null) {
	settings.put(OVERWRITE_ALL_STATE, fOverwriteExistingFilesCheckbox.getSelection());
	settings.put(DESTINATION_FILE_NAME, fDestinationNameField.getText().trim());
	}
	}

	/**
	* Restores the state of the wizard from previous invocations
	*/
	private void restoreWidgetState() {
	IDialogSettings settings = getDialogSettings();
	if(settings != null) {
	fOverwriteExistingFilesCheckbox.setSelection(Boolean.valueOf(settings.get(OVERWRITE_ALL_STATE)).booleanValue());
	String filename = settings.get(DESTINATION_FILE_NAME);
	if (filename != null) {
	fDestinationNameField.setText(filename);
	}
	}
	}

	/**
	* The Finish button is clicked on the main wizard
	* dialog to export the breakpoints, we write them out with all persistnat
	* information to a simple XML file via the use of XMLMemento.
	*
	* @return if the save operation was successful or not
	*/
	public boolean finish() {
	try {
	//name typed in without using selection box
	if(fPath == null) {
	fPath = new Path(fDestinationNameField.getText().trim());
	if(fPath.getFileExtension() == null) {
	fPath = fPath.addFileExtension(IImportExportConstants.EXTENSION);
	}
	else if(!fPath.getFileExtension().equals(IImportExportConstants.EXTENSION)) {
	fPath = fPath.addFileExtension(IImportExportConstants.EXTENSION);
	}
	}
	saveWidgetState();
	if(fPath.toFile().exists() && !fOverwriteExistingFilesCheckbox.getSelection()) {
	if (!MessageDialog.openQuestion(null, ImportExportMessages.WizardBreakpointsPage_12, MessageFormat.format(ImportExportMessages.ImportExportOperations_0, new String[] {fPath.toPortableString()}))) {
	return false;
	}
	}
	// collect breakpoints
	Object[] elements = fTView.getCheckedElements().toArray();
	List breakpoints = new ArrayList();
	for (int i = 0; i < elements.length; i++) {
	Object object = elements[i];
	if (object instanceof IBreakpoint) {
	breakpoints.add(object);
	}
	}
	getContainer().run(true, true, new ExportBreakpointsOperation((IBreakpoint[]) breakpoints.toArray(new IBreakpoint[breakpoints.size()]), fPath.toOSString()));
	}
	catch (InterruptedException e) {
	DebugPlugin.log(e);
	return false;
	}
	catch (InvocationTargetException e) {
	DebugPlugin.log(e);
	return false;
	}
	return true;
	}
	}