framework/bundles/org.eclipse.ecf.ui/src/org/eclipse/ecf/ui/wizards/ConfigurationWizardSelectionPage.java - ecf/org.eclipse.ecf - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation, Composent, Inc. 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.ecf.ui.wizards;

 import java.util.ArrayList;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.ecf.core.ContainerFactory;
 import org.eclipse.ecf.core.ContainerTypeDescription;
 import org.eclipse.ecf.internal.ui.Activator;
 import org.eclipse.ecf.internal.ui.Messages;
 import org.eclipse.ecf.internal.ui.wizards.*;
 import org.eclipse.ecf.ui.ContainerConfigurationResult;
 import org.eclipse.ecf.ui.IConfigurationWizard;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.ErrorDialog;
 import org.eclipse.jface.viewers.*;
 import org.eclipse.jface.wizard.IWizardPage;
 import org.eclipse.jface.wizard.WizardSelectionPage;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.*;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.activities.ITriggerPoint;
 import org.eclipse.ui.activities.WorkbenchActivityHelper;
 import org.eclipse.ui.dialogs.FilteredTree;
 import org.eclipse.ui.dialogs.PatternFilter;
 import org.eclipse.ui.model.AdaptableList;
 import org.eclipse.ui.model.WorkbenchLabelProvider;
 import org.eclipse.ui.wizards.IWizardCategory;

 /**
  * A wizard page for {@link ConfigurationWizardSelectionWizard}.
  */
 public class ConfigurationWizardSelectionPage extends WizardSelectionPage {

 	private static final int CONTAINERTYPEDESCRIPTION_ERROR_CODE = 333;

 	protected IWorkbench workbench;

 	protected TreeViewer treeViewer;

 	protected CategorizedWizardSelectionTree wizardSelectionTree;

 	protected IStructuredSelection currentResourceSelection;

 	protected IWorkbench getWorkbench() {
 		return this.workbench;
 	}

 	protected TreeViewer getTreeViewer() {
 		return treeViewer;
 	}

 	protected void setTreeViewer(TreeViewer viewer) {
 		treeViewer = viewer;
 	}

 	protected class CategorizedWizardSelectionTree {
 		private final static int SIZING_LISTS_HEIGHT = 200;

 		private IWizardCategory wizardCategories;

 		private String message;

 		private TreeViewer viewer;

 		/**
 		 * Constructor for CategorizedWizardSelectionTree
 		 *
 		 * @param categories
 		 *            root wizard category for the wizard type
 		 * @param msg
 		 *            message describing what the user should choose from the
 		 *            tree.
 		 */
 		protected CategorizedWizardSelectionTree(IWizardCategory categories, String msg) {
 			this.wizardCategories = categories;
 			this.message = msg;
 		}

 		/**
 		 * Create the tree viewer and a message describing what the user should
 		 * choose from the tree.
 		 *
 		 * @param parent
 		 *            Composite on which the tree viewer is to be created
 		 * @return Comoposite with all widgets
 		 */
 		protected Composite createControl(Composite parent) {
 			Font font = parent.getFont();

 			// create composite for page.
 			Composite outerContainer = new Composite(parent, SWT.NONE);
 			outerContainer.setLayout(new GridLayout());
 			outerContainer.setLayoutData(new GridData(GridData.FILL_BOTH));
 			outerContainer.setFont(font);

 			Label messageLabel = new Label(outerContainer, SWT.NONE);
 			if (message != null) {
 				messageLabel.setText(message);
 			}
 			messageLabel.setFont(font);

 			createFilteredTree(outerContainer);
 			layoutTopControl(viewer.getControl());

 			return outerContainer;
 		}

 		/**
 		 * Create the categorized tree viewer.
 		 *
 		 * @param parent
 		 */
 		private void createFilteredTree(Composite parent) {
 			// Create a FilteredTree for the categories and wizards
 			FilteredTree filteredTree = new FilteredTree(parent, SWT.SINGLE | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER, new WizardPatternFilter());
 			viewer = filteredTree.getViewer();
 			filteredTree.setFont(parent.getFont());

 			viewer.setContentProvider(new WizardContentProvider());
 			viewer.setLabelProvider(new WorkbenchLabelProvider());
 			viewer.setComparator(new ViewerComparator() {
 				public int category(Object element) {
 					if (element instanceof WizardCollectionElement) {
 						String id = ((WizardCollectionElement) element).getId();
 						String wizardCategory = Messages.ConfigurationWizardSelectionPage_WIZARD_CATEGORY;
 						if (wizardCategory != null && wizardCategory.equals(id))
 							return 1;
 						String uncategorizedCategory = Messages.ConfigurationWizardSelectionPage_UNCATEGORIZED_WIZARD_CATEGORY;
 						if (uncategorizedCategory != null && uncategorizedCategory.equals(id))
 							return 3;
 						return 2;
 					}
 					return super.category(element);
 				}
 			});

 			ArrayList inputArray = new ArrayList();
 			boolean expandTop = false;

 			if (wizardCategories != null) {
 				if (wizardCategories.getParent() == null) {
 					IWizardCategory[] children = wizardCategories.getCategories();
 					for (int i = 0; i < children.length; i++) {
 						inputArray.add(children[i]);
 					}
 				} else {
 					expandTop = true;
 					inputArray.add(wizardCategories);
 				}
 			}

 			// ensure the category is expanded. If there is a remembered
 			// expansion it will be set later.
 			if (expandTop) {
 				viewer.setAutoExpandLevel(2);
 			}

 			AdaptableList input = new AdaptableList(inputArray);

 			// filter wizard list according to capabilities that are enabled
 			viewer.addFilter(new WizardActivityFilter());

 			viewer.setInput(input);
 		}

 		protected class WizardPatternFilter extends PatternFilter {

 			/**
 			 * Create a new instance of a WizardPatternFilter
 			 *
 			 */
 			public WizardPatternFilter() {
 				super();
 			}

 			/*
 			 * (non-Javadoc)
 			 *
 			 * @see org.eclipse.ui.internal.dialogs.PatternFilter#isElementSelectable(java.lang.Object)
 			 */
 			public boolean isElementSelectable(Object element) {
 				return element instanceof WorkbenchWizardElement;
 			}

 			/*
 			 * (non-Javadoc)
 			 *
 			 * @see org.eclipse.ui.internal.dialogs.PatternFilter#isElementMatch(org.eclipse.jface.viewers.Viewer,
 			 *      java.lang.Object)
 			 */
 			protected boolean isLeafMatch(Viewer v, Object element) {
 				if (element instanceof WizardCollectionElement)
 					return false;

 				if (element instanceof WorkbenchWizardElement) {
 					WorkbenchWizardElement desc = (WorkbenchWizardElement) element;
 					String text = desc.getLabel();
 					if (wordMatches(text))
 						return true;
 				}
 				return false;
 			}

 		}

 		/**
 		 *
 		 * @return the categorized tree viewer
 		 */
 		protected TreeViewer getViewer() {
 			return viewer;
 		}

 		/**
 		 * Layout for the given control.
 		 *
 		 * @param control
 		 */
 		private void layoutTopControl(Control control) {
 			GridData data = new GridData(GridData.FILL_BOTH);

 			int availableRows = control.getParent().getDisplay().getClientArea().height / (control.getParent().getFont().getFontData())[0].getHeight();

 			// Only give a height hint if the dialog is going to be too small
 			if (availableRows > 50) {
 				data.heightHint = SIZING_LISTS_HEIGHT;
 			} else {
 				data.heightHint = availableRows * 3;
 			}

 			control.setLayoutData(data);
 		}
 	}

 	public ConfigurationWizardSelectionPage(IWorkbench workbench, IStructuredSelection selection) {
 		super(Messages.ConfigurationWizardSelectionPage_CONFIGURATION_WIZARD_PAGE_NAME);
 		this.workbench = workbench;
 		this.currentResourceSelection = selection;
 		setTitle(Messages.Select);
 	}

 	protected ITriggerPoint getTriggerPoint() {
 		return getWorkbench().getActivitySupport().getTriggerPointManager().getTriggerPoint(IWizardRegistryConstants.CONFIGURE_EPOINT_ID);
 	}

 	protected ContainerConfigurationResult getContainerResult() {
 		ConfigurationWizardNode cwn = (ConfigurationWizardNode) getSelectedNode();
 		if (cwn == null)
 			return null;
 		return ((IConfigurationWizard) getSelectedNode().getWizard()).getConfigurationResult();
 	}

 	private ContainerTypeDescription getContainerTypeDescriptionForElement(WorkbenchWizardElement element) {
 		ContainerTypeDescription typeDescription = ContainerFactory.getDefault().getDescriptionByName(element.getContainerTypeName());
 		if (typeDescription == null) {
 			String msg = NLS.bind(Messages.ConfigurationWizardSelectionPage_ERROR_MESSAGE, element);
 			setErrorMessage(msg);
 			ErrorDialog.openError(getShell(), Messages.ConfigurationWizardSelectionPage_CONFIGRATION_ERROR_TITLE, Messages.ConfigurationWizardSelectionPage_CONFIGURATION_ERROR_MESSAGE, new Status(IStatus.ERROR, Activator.PLUGIN_ID, CONTAINERTYPEDESCRIPTION_ERROR_CODE, msg, null));
 			return null;
 		}
 		return typeDescription;
 	}

 	protected void updateSelectedNode(WorkbenchWizardElement wizardElement) {
 		setErrorMessage(null);
 		if (wizardElement == null) {
 			updateMessage();
 			setSelectedNode(null);
 			return;
 		}

 		setSelectedNode(new ConfigurationWizardNode(getWorkbench(), this, wizardElement, getContainerTypeDescriptionForElement(wizardElement)));
 		setMessage(wizardElement.getDescription());
 	}

 	protected IWizardCategory getRootCategory() {
 		return new WizardsRegistryReader(Activator.PLUGIN_ID, IWizardRegistryConstants.CONFIGURE_EPOINT).getWizardElements();
 	}

 	public IWizardPage getNextPage() {
 		ITriggerPoint triggerPoint = getTriggerPoint();

 		if (triggerPoint == null || WorkbenchActivityHelper.allowUseOf(triggerPoint, getSelectedNode())) {
 			return super.getNextPage();
 		}
 		return null;
 	}

 	protected Composite createTreeViewer(Composite parent) {
 		IWizardCategory root = getRootCategory();
 		wizardSelectionTree = new CategorizedWizardSelectionTree(root, Messages.ConfigurationWizardSelectionPage_SELECT);
 		Composite importComp = wizardSelectionTree.createControl(parent);
 		wizardSelectionTree.getViewer().addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent event) {
 				listSelectionChanged(event.getSelection());
 			}
 		});
 		wizardSelectionTree.getViewer().addDoubleClickListener(new IDoubleClickListener() {
 			public void doubleClick(DoubleClickEvent event) {
 				treeDoubleClicked(event);
 			}
 		});
 		setTreeViewer(wizardSelectionTree.getViewer());
 		return importComp;
 	}

 	protected void treeDoubleClicked(DoubleClickEvent event) {
 		ISelection selection = event.getViewer().getSelection();
 		IStructuredSelection ss = (IStructuredSelection) selection;
 		listSelectionChanged(ss);

 		Object element = ss.getFirstElement();
 		TreeViewer v = (TreeViewer) event.getViewer();
 		if (v.isExpandable(element)) {
 			v.setExpandedState(element, !v.getExpandedState(element));
 		} else if (element instanceof WorkbenchWizardElement) {
 			if (canFlipToNextPage()) {
 				getContainer().showPage(getNextPage());
 			}
 		}
 		getContainer().showPage(getNextPage());
 	}

 	protected void listSelectionChanged(ISelection selection) {
 		setErrorMessage(null);
 		IStructuredSelection ss = (IStructuredSelection) selection;
 		Object sel = ss.getFirstElement();
 		if (sel instanceof WorkbenchWizardElement) {
 			WorkbenchWizardElement currentWizardSelection = (WorkbenchWizardElement) sel;
 			updateSelectedNode(currentWizardSelection);
 		} else {
 			updateSelectedNode(null);
 		}
 	}

 	protected void updateMessage() {
 		TreeViewer viewer = getTreeViewer();
 		if (viewer != null) {
 			ISelection selection = viewer.getSelection();
 			IStructuredSelection ss = (IStructuredSelection) selection;
 			Object sel = ss.getFirstElement();
 			if (sel instanceof WorkbenchWizardElement) {
 				updateSelectedNode((WorkbenchWizardElement) sel);
 			} else {
 				setSelectedNode(null);
 			}
 		} else {
 			setMessage(null);
 		}
 	}

 	public void createControl(Composite parent) {
 		Font font = parent.getFont();

 		Composite outerContainer = new Composite(parent, SWT.NONE);
 		outerContainer.setLayout(new GridLayout());
 		outerContainer.setLayoutData(new GridData(GridData.FILL_BOTH));
 		outerContainer.setFont(font);

 		Composite comp = createTreeViewer(outerContainer);

 		Dialog.applyDialogFont(comp);

 		setControl(outerContainer);

 	}

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2006 IBM Corporation, Composent, Inc. 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.ecf.ui.wizards;

	import java.util.ArrayList;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.ecf.core.ContainerFactory;
	import org.eclipse.ecf.core.ContainerTypeDescription;
	import org.eclipse.ecf.internal.ui.Activator;
	import org.eclipse.ecf.internal.ui.Messages;
	import org.eclipse.ecf.internal.ui.wizards.*;
	import org.eclipse.ecf.ui.ContainerConfigurationResult;
	import org.eclipse.ecf.ui.IConfigurationWizard;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.ErrorDialog;
	import org.eclipse.jface.viewers.*;
	import org.eclipse.jface.wizard.IWizardPage;
	import org.eclipse.jface.wizard.WizardSelectionPage;
	import org.eclipse.osgi.util.NLS;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.*;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.activities.ITriggerPoint;
	import org.eclipse.ui.activities.WorkbenchActivityHelper;
	import org.eclipse.ui.dialogs.FilteredTree;
	import org.eclipse.ui.dialogs.PatternFilter;
	import org.eclipse.ui.model.AdaptableList;
	import org.eclipse.ui.model.WorkbenchLabelProvider;
	import org.eclipse.ui.wizards.IWizardCategory;

	/**
	* A wizard page for {@link ConfigurationWizardSelectionWizard}.
	*/
	public class ConfigurationWizardSelectionPage extends WizardSelectionPage {

	private static final int CONTAINERTYPEDESCRIPTION_ERROR_CODE = 333;

	protected IWorkbench workbench;

	protected TreeViewer treeViewer;

	protected CategorizedWizardSelectionTree wizardSelectionTree;

	protected IStructuredSelection currentResourceSelection;

	protected IWorkbench getWorkbench() {
	return this.workbench;
	}

	protected TreeViewer getTreeViewer() {
	return treeViewer;
	}

	protected void setTreeViewer(TreeViewer viewer) {
	treeViewer = viewer;
	}

	protected class CategorizedWizardSelectionTree {
	private final static int SIZING_LISTS_HEIGHT = 200;

	private IWizardCategory wizardCategories;

	private String message;

	private TreeViewer viewer;

	/**
	* Constructor for CategorizedWizardSelectionTree
	*
	* @param categories
	* root wizard category for the wizard type
	* @param msg
	* message describing what the user should choose from the
	* tree.
	*/
	protected CategorizedWizardSelectionTree(IWizardCategory categories, String msg) {
	this.wizardCategories = categories;
	this.message = msg;
	}

	/**
	* Create the tree viewer and a message describing what the user should
	* choose from the tree.
	*
	* @param parent
	* Composite on which the tree viewer is to be created
	* @return Comoposite with all widgets
	*/
	protected Composite createControl(Composite parent) {
	Font font = parent.getFont();

	// create composite for page.
	Composite outerContainer = new Composite(parent, SWT.NONE);
	outerContainer.setLayout(new GridLayout());
	outerContainer.setLayoutData(new GridData(GridData.FILL_BOTH));
	outerContainer.setFont(font);

	Label messageLabel = new Label(outerContainer, SWT.NONE);
	if (message != null) {
	messageLabel.setText(message);
	}
	messageLabel.setFont(font);

	createFilteredTree(outerContainer);
	layoutTopControl(viewer.getControl());

	return outerContainer;
	}

	/**
	* Create the categorized tree viewer.
	*
	* @param parent
	*/
	private void createFilteredTree(Composite parent) {
	// Create a FilteredTree for the categories and wizards
	FilteredTree filteredTree = new FilteredTree(parent, SWT.SINGLE \| SWT.H_SCROLL \| SWT.V_SCROLL \| SWT.BORDER, new WizardPatternFilter());
	viewer = filteredTree.getViewer();
	filteredTree.setFont(parent.getFont());

	viewer.setContentProvider(new WizardContentProvider());
	viewer.setLabelProvider(new WorkbenchLabelProvider());
	viewer.setComparator(new ViewerComparator() {
	public int category(Object element) {
	if (element instanceof WizardCollectionElement) {
	String id = ((WizardCollectionElement) element).getId();
	String wizardCategory = Messages.ConfigurationWizardSelectionPage_WIZARD_CATEGORY;
	if (wizardCategory != null && wizardCategory.equals(id))
	return 1;
	String uncategorizedCategory = Messages.ConfigurationWizardSelectionPage_UNCATEGORIZED_WIZARD_CATEGORY;
	if (uncategorizedCategory != null && uncategorizedCategory.equals(id))
	return 3;
	return 2;
	}
	return super.category(element);
	}
	});

	ArrayList inputArray = new ArrayList();
	boolean expandTop = false;

	if (wizardCategories != null) {
	if (wizardCategories.getParent() == null) {
	IWizardCategory[] children = wizardCategories.getCategories();
	for (int i = 0; i < children.length; i++) {
	inputArray.add(children[i]);
	}
	} else {
	expandTop = true;
	inputArray.add(wizardCategories);
	}
	}

	// ensure the category is expanded. If there is a remembered
	// expansion it will be set later.
	if (expandTop) {
	viewer.setAutoExpandLevel(2);
	}

	AdaptableList input = new AdaptableList(inputArray);

	// filter wizard list according to capabilities that are enabled
	viewer.addFilter(new WizardActivityFilter());

	viewer.setInput(input);
	}

	protected class WizardPatternFilter extends PatternFilter {

	/**
	* Create a new instance of a WizardPatternFilter
	*
	*/
	public WizardPatternFilter() {
	super();
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.ui.internal.dialogs.PatternFilter#isElementSelectable(java.lang.Object)
	*/
	public boolean isElementSelectable(Object element) {
	return element instanceof WorkbenchWizardElement;
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.ui.internal.dialogs.PatternFilter#isElementMatch(org.eclipse.jface.viewers.Viewer,
	* java.lang.Object)
	*/
	protected boolean isLeafMatch(Viewer v, Object element) {
	if (element instanceof WizardCollectionElement)
	return false;

	if (element instanceof WorkbenchWizardElement) {
	WorkbenchWizardElement desc = (WorkbenchWizardElement) element;
	String text = desc.getLabel();
	if (wordMatches(text))
	return true;
	}
	return false;
	}

	}

	/**
	*
	* @return the categorized tree viewer
	*/
	protected TreeViewer getViewer() {
	return viewer;
	}

	/**
	* Layout for the given control.
	*
	* @param control
	*/
	private void layoutTopControl(Control control) {
	GridData data = new GridData(GridData.FILL_BOTH);

	int availableRows = control.getParent().getDisplay().getClientArea().height / (control.getParent().getFont().getFontData())[0].getHeight();

	// Only give a height hint if the dialog is going to be too small
	if (availableRows > 50) {
	data.heightHint = SIZING_LISTS_HEIGHT;
	} else {
	data.heightHint = availableRows * 3;
	}

	control.setLayoutData(data);
	}
	}

	public ConfigurationWizardSelectionPage(IWorkbench workbench, IStructuredSelection selection) {
	super(Messages.ConfigurationWizardSelectionPage_CONFIGURATION_WIZARD_PAGE_NAME);
	this.workbench = workbench;
	this.currentResourceSelection = selection;
	setTitle(Messages.Select);
	}

	protected ITriggerPoint getTriggerPoint() {
	return getWorkbench().getActivitySupport().getTriggerPointManager().getTriggerPoint(IWizardRegistryConstants.CONFIGURE_EPOINT_ID);
	}

	protected ContainerConfigurationResult getContainerResult() {
	ConfigurationWizardNode cwn = (ConfigurationWizardNode) getSelectedNode();
	if (cwn == null)
	return null;
	return ((IConfigurationWizard) getSelectedNode().getWizard()).getConfigurationResult();
	}

	private ContainerTypeDescription getContainerTypeDescriptionForElement(WorkbenchWizardElement element) {
	ContainerTypeDescription typeDescription = ContainerFactory.getDefault().getDescriptionByName(element.getContainerTypeName());
	if (typeDescription == null) {
	String msg = NLS.bind(Messages.ConfigurationWizardSelectionPage_ERROR_MESSAGE, element);
	setErrorMessage(msg);
	ErrorDialog.openError(getShell(), Messages.ConfigurationWizardSelectionPage_CONFIGRATION_ERROR_TITLE, Messages.ConfigurationWizardSelectionPage_CONFIGURATION_ERROR_MESSAGE, new Status(IStatus.ERROR, Activator.PLUGIN_ID, CONTAINERTYPEDESCRIPTION_ERROR_CODE, msg, null));
	return null;
	}
	return typeDescription;
	}

	protected void updateSelectedNode(WorkbenchWizardElement wizardElement) {
	setErrorMessage(null);
	if (wizardElement == null) {
	updateMessage();
	setSelectedNode(null);
	return;
	}

	setSelectedNode(new ConfigurationWizardNode(getWorkbench(), this, wizardElement, getContainerTypeDescriptionForElement(wizardElement)));
	setMessage(wizardElement.getDescription());
	}

	protected IWizardCategory getRootCategory() {
	return new WizardsRegistryReader(Activator.PLUGIN_ID, IWizardRegistryConstants.CONFIGURE_EPOINT).getWizardElements();
	}

	public IWizardPage getNextPage() {
	ITriggerPoint triggerPoint = getTriggerPoint();

	if (triggerPoint == null \|\| WorkbenchActivityHelper.allowUseOf(triggerPoint, getSelectedNode())) {
	return super.getNextPage();
	}
	return null;
	}

	protected Composite createTreeViewer(Composite parent) {
	IWizardCategory root = getRootCategory();
	wizardSelectionTree = new CategorizedWizardSelectionTree(root, Messages.ConfigurationWizardSelectionPage_SELECT);
	Composite importComp = wizardSelectionTree.createControl(parent);
	wizardSelectionTree.getViewer().addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	listSelectionChanged(event.getSelection());
	}
	});
	wizardSelectionTree.getViewer().addDoubleClickListener(new IDoubleClickListener() {
	public void doubleClick(DoubleClickEvent event) {
	treeDoubleClicked(event);
	}
	});
	setTreeViewer(wizardSelectionTree.getViewer());
	return importComp;
	}

	protected void treeDoubleClicked(DoubleClickEvent event) {
	ISelection selection = event.getViewer().getSelection();
	IStructuredSelection ss = (IStructuredSelection) selection;
	listSelectionChanged(ss);

	Object element = ss.getFirstElement();
	TreeViewer v = (TreeViewer) event.getViewer();
	if (v.isExpandable(element)) {
	v.setExpandedState(element, !v.getExpandedState(element));
	} else if (element instanceof WorkbenchWizardElement) {
	if (canFlipToNextPage()) {
	getContainer().showPage(getNextPage());
	}
	}
	getContainer().showPage(getNextPage());
	}

	protected void listSelectionChanged(ISelection selection) {
	setErrorMessage(null);
	IStructuredSelection ss = (IStructuredSelection) selection;
	Object sel = ss.getFirstElement();
	if (sel instanceof WorkbenchWizardElement) {
	WorkbenchWizardElement currentWizardSelection = (WorkbenchWizardElement) sel;
	updateSelectedNode(currentWizardSelection);
	} else {
	updateSelectedNode(null);
	}
	}

	protected void updateMessage() {
	TreeViewer viewer = getTreeViewer();
	if (viewer != null) {
	ISelection selection = viewer.getSelection();
	IStructuredSelection ss = (IStructuredSelection) selection;
	Object sel = ss.getFirstElement();
	if (sel instanceof WorkbenchWizardElement) {
	updateSelectedNode((WorkbenchWizardElement) sel);
	} else {
	setSelectedNode(null);
	}
	} else {
	setMessage(null);
	}
	}

	public void createControl(Composite parent) {
	Font font = parent.getFont();

	Composite outerContainer = new Composite(parent, SWT.NONE);
	outerContainer.setLayout(new GridLayout());
	outerContainer.setLayoutData(new GridData(GridData.FILL_BOTH));
	outerContainer.setFont(font);

	Composite comp = createTreeViewer(outerContainer);

	Dialog.applyDialogFont(comp);

	setControl(outerContainer);

	}

	}