plugins/org.eclipse.jst.j2ee.ui/j2ee_migration/org/eclipse/jst/j2ee/internal/migration/actions/GeneralModuleMigrationWizardPage.java - gerrit/jeetools/webtools.javaee - Git at Google

 /*******************************************************************************
  * Copyright (c) 2003, 2004 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.jst.j2ee.internal.migration.actions;

 import java.text.MessageFormat;
 import java.util.Arrays;
 import java.util.List;

 import org.eclipse.core.resources.IProject;
 import org.eclipse.jface.viewers.CheckStateChangedEvent;
 import org.eclipse.jface.viewers.CheckboxTableViewer;
 import org.eclipse.jface.viewers.ICheckStateListener;
 import org.eclipse.jface.viewers.IStructuredContentProvider;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jst.j2ee.internal.earcreation.EARNatureRuntime;
 import org.eclipse.jst.j2ee.internal.migration.ComposedMigrationConfig;
 import org.eclipse.jst.j2ee.internal.migration.J2EEMigrationConfig;
 import org.eclipse.jst.j2ee.internal.servertarget.ServerTargetDataModel;
 import org.eclipse.jst.j2ee.internal.wizard.ServerTargetGroup;
 import org.eclipse.swt.SWT;
 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.Event;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.help.WorkbenchHelp;
 import org.eclipse.ui.model.WorkbenchLabelProvider;
 import org.eclipse.wst.internal.common.ui.WTPWizardPage;

 /**
  *
  */
 public abstract class GeneralModuleMigrationWizardPage extends WTPWizardPage implements ICheckStateListener {
 	protected ServerTargetGroup serverTargetGroup;
 	protected Label j2eeVersionLabel;
 	protected Combo j2eeVersionCombo;

 	protected class ProjectContentProvider implements IStructuredContentProvider {
 		public ProjectContentProvider() {
 			super();
 		}

 		public void dispose() {
 		}

 		public Object[] getElements(Object inputElement) {
 			if (inputElement instanceof List)
 				return ((List) inputElement).toArray();
 			return new Object[0];
 		}

 		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 		}
 	}

 	private static final Integer PAGE_OK = new Integer(2);
 	protected CheckboxTableViewer checkBoxViewer;
 	protected Button cmpMigrationButton, addLocalClient, migrateProject, selectAll, deselectAll, migrateProjectStructure;
 	protected ComposedMigrationConfig composedConfig;
 	protected Text selectStatus;
 	protected int totalModules = 0;

 	/**
 	 * Constructor for EJBModuleMigrationWizard.
 	 *
 	 * @param pageName
 	 */
 	public GeneralModuleMigrationWizardPage(String pageName, ComposedMigrationConfig config) {
 		super(config, pageName);
 		composedConfig = config;
 	}

 	protected void addListeners() {
 		checkBoxViewer.getControl().addListener(SWT.Selection, this);
 		selectAll.addListener(SWT.Selection, this);
 		deselectAll.addListener(SWT.Selection, this);
 		migrateProject.addListener(SWT.Selection, this);
 		migrateProjectStructure.addListener(SWT.Selection, this);
 	}

 	/**
 	 * Method changeMigrateProjectSelection.
 	 */
 	private void changeMigrateProjectSelection(boolean migrate) {
 		List configs = getConfigs();
 		for (int i = 0; i < configs.size(); i++) {
 			((J2EEMigrationConfig) configs.get(i)).setMigrateVersion(migrate);
 		}
 	}

 	/**
 	 * Method changeMigrateProjectSelection.
 	 */
 	private void changeMigrateProjectStructureSelection(boolean migrate) {
 		List configs = getConfigs();
 		for (int i = 0; i < configs.size(); i++) {
 			((J2EEMigrationConfig) configs.get(i)).setMigrateProjectStructure(migrate);
 		}
 	}

 	/**
 	 * @see org.eclipse.jface.viewers.ICheckStateListener#checkStateChanged(CheckStateChangedEvent)
 	 */
 	public void checkStateChanged(CheckStateChangedEvent event) {
 		if (event.getElement() == null)
 			return;
 		((J2EEMigrationConfig) event.getElement()).setIsSelected(event.getChecked());
 	}

 	protected void createButtons(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NULL);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		composite.setLayout(layout);
 		composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
 		selectAll = new Button(composite, SWT.NONE);
 		selectAll.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		selectAll.setText(IMigrationWizardConstants.SELECT_ALL);
 		deselectAll = new Button(composite, SWT.NONE);
 		deselectAll.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		deselectAll.setText(IMigrationWizardConstants.DESELECT_ALL);
 	}

 	protected void createEARButtons(Composite composite) {
 		migrateProjectStructure = new Button(composite, SWT.CHECK);
 		migrateProjectStructure.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		migrateProjectStructure.setText(IMigrationWizardConstants.MIGRATE_PROJECT_STRUCTURE_);
 		synchHelper.synchCheckbox(migrateProjectStructure, J2EEMigrationConfig.MIGRATE_PROJECT_STRUCTURE, null);
 		migrateProject = new Button(composite, SWT.CHECK);
 		migrateProject.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		migrateProject.setText(IMigrationWizardConstants.EAR_MIGRATE_J2EE_VERSION);
 		synchHelper.synchCheckbox(migrateProject, J2EEMigrationConfig.MIGRATE_VERSION, null);
 		if (!earMigrationSelected())
 			createJ2EEVersionComposite(composite);
 	}

 	/**
 	 * @param composite
 	 */
 	protected void createJ2EEVersionComposite(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NULL);
 		GridLayout layout = new GridLayout(3, false);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.horizontalIndent = 15;
 		composite.setLayout(layout);
 		composite.setLayoutData(data);
 		j2eeVersionLabel = new Label(composite, SWT.NULL);
 		j2eeVersionLabel.setText(IMigrationWizardConstants.J2EE_VERSION_LABEL);
 		j2eeVersionCombo = new Combo(composite, SWT.BORDER | SWT.READ_ONLY);
 		data = new GridData(GridData.FILL_HORIZONTAL);
 		j2eeVersionCombo.setLayoutData(data);
 		Control[] deps = new Control[]{j2eeVersionLabel};
 		synchHelper.synchCombo(j2eeVersionCombo, J2EEMigrationConfig.J2EE_VERSIONS_LBL, J2EEMigrationConfig.J2EE_MIGRATION_VERSION, deps);
 		new Label(composite, SWT.NULL); //empty label
 		serverTargetGroup = new ServerTargetGroup(composite, SWT.NULL, getServerTargetDataModel());
 	}

 	/**
 	 * @return
 	 */
 	private boolean earMigrationSelected() {
 		IProject project = composedConfig.getTargetProject();
 		if (project != null && EARNatureRuntime.hasRuntime(project))
 			return true;
 		return false;
 	}

 	/**
 	 * @return
 	 */
 	protected ServerTargetDataModel getServerTargetDataModel() {
 		return ((ComposedMigrationConfig) model).getServerTargetDataModel();
 	}

 	protected void createNumberSelected(Composite composite) {
 		selectStatus = new Text(composite, SWT.WRAP | SWT.READ_ONLY);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		selectStatus.setLayoutData(data);
 		updateSelectedStatus();
 	}

 	/**
 	 * @see org.eclipse.jst.j2ee.internal.wizard.J2EEWizardPage#createTopLevelComposite(Composite)
 	 */
 	protected Composite createTopLevelComposite(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NULL);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 1;
 		composite.setLayout(layout);
 		composite.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL));
 		WorkbenchHelp.setHelp(composite, getContextId());
 		createViewer(composite);
 		createButtons(composite);
 		createNumberSelected(composite);
 		setSpacer(composite);
 		createEARButtons(composite);
 		setSpacer(composite);
 		setSpacer(composite);
 		setSpacer(composite);
 		setSpacer(composite);
 		setSpacer(composite);
 		setSpacer(composite);
 		return composite;
 	}

 	/**
 	 *
 	 */
 	protected void createViewer(Composite parent) {
 		Label ejbLabel = new Label(parent, SWT.NULL);
 		ejbLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		ejbLabel.setText(IMigrationWizardConstants.EJB_MIGRATE_AVAILABLE_PROJECTS);
 		checkBoxViewer = CheckboxTableViewer.newCheckList(parent, SWT.CHECK | SWT.BORDER | SWT.V_SCROLL);
 		GridData data = new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_BOTH);
 		data.heightHint = 90;
 		checkBoxViewer.getTable().setLayoutData(data);
 		checkBoxViewer.setLabelProvider(new WorkbenchLabelProvider());
 		checkBoxViewer.setContentProvider(new ProjectContentProvider());
 		checkBoxViewer.addCheckStateListener(this);
 	}

 	public void enter() {
 		List configs = getConfigs();
 		setTotalModules(configs.size());
 		checkBoxViewer.setInput(configs);
 		refreshTreeViewer();
 		refreshButtonsSelection();
 		handleJ2EEButtonEnablement();
 		updateSelectedStatus();
 		super.enter();
 	}

 	protected String formatNumSelected(String aPattern, int selected, int total) {
 		return MessageFormat.format(aPattern, new String[]{"" + selected, "" + total}); //$NON-NLS-1$ //$NON-NLS-2$
 	}

 	protected abstract List getConfigs();

 	protected abstract String getContextId();

 	public void handleEvent(Event event) {
 		if (event.widget == checkBoxViewer.getControl()) {
 			updateSelectedStatus();
 		} else if (event.widget == selectAll) {
 			checkBoxViewer.setAllChecked(true);
 			setAllChecked(event, true);
 			updateSelectedStatus();
 		} else if (event.widget == deselectAll) {
 			checkBoxViewer.setAllChecked(false);
 			setAllChecked(event, false);
 			updateSelectedStatus();
 		} else if (event.widget == migrateProject) {
 			changeMigrateProjectSelection(migrateProject.getSelection());
 		} else if (event.widget == migrateProjectStructure) {
 			changeMigrateProjectStructureSelection(migrateProjectStructure.getSelection());
 		}
 		validatePage();
 		super.handleEvent(event);
 	}

 	/**
 	 * Method handleJ2EEButtonEnablement.
 	 */
 	private void handleJ2EEButtonEnablement() {
 		List configs = getConfigs();
 		if (configs.isEmpty())
 			return;
 		if (composedConfig != null && composedConfig.isEAR()) {
 			if (!((J2EEMigrationConfig) configs.get(0)).shouldMigrateJ2EEVersion())
 				migrateProject.setEnabled(false);
 			else
 				migrateProject.setEnabled(true);
 			if (!((J2EEMigrationConfig) configs.get(0)).shouldMigrateProjectStructure())
 				migrateProjectStructure.setEnabled(false);
 			else
 				migrateProjectStructure.setEnabled(true);
 		}
 	}

 	/**
 	 * Method refreshButtonsSelection.
 	 */
 	protected void refreshButtonsSelection() {
 		List configs = getConfigs();
 		if (configs.isEmpty())
 			return;
 		migrateProject.setSelection(((J2EEMigrationConfig) configs.get(0)).shouldMigrateJ2EEVersion());
 	}

 	protected void refreshTreeViewer() {
 		List configs = getConfigs();
 		for (int i = 0; i < configs.size(); i++) {
 			J2EEMigrationConfig config = (J2EEMigrationConfig) configs.get(i);
 			checkBoxViewer.setChecked(config, config.isSelected());
 		}
 	}

 	/**
 	 * @param event
 	 * @param b
 	 */
 	private void setAllChecked(Event event, boolean b) {
 		List configs = getConfigs();
 		for (int i = 0; i < configs.size(); i++) {
 			J2EEMigrationConfig config = (J2EEMigrationConfig) configs.get(i);
 			config.setIsSelected(b);
 		}
 	}

 	public void setSpacer(Composite composite) {
 		Label space = new Label(composite, SWT.NONE);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		space.setLayoutData(data);
 	}

 	public void setTotalModules(int aTotalModules) {
 		totalModules = aTotalModules;
 	}

 	protected void updateSelectedStatus() {
 		int numSelected = (Arrays.asList(checkBoxViewer.getCheckedElements())).size();
 		selectStatus.setText(formatNumSelected(IMigrationWizardConstants.EJB_MIGRATE_SELECTED_PROJECTS, numSelected, totalModules));
 	}

 	/**
 	 * @see org.eclipse.jst.j2ee.internal.wizard.J2EEWizardPage#validateControls()
 	 */
 	protected void validateControls() {
 		setOKStatus(PAGE_OK);
 		if ((Arrays.asList(checkBoxViewer.getCheckedElements())).size() == 0 && !composedConfig.isEAR())
 			this.setErrorStatus(PAGE_OK, IMigrationWizardConstants.EJB_MIGRATE_ERROR_NO_PROJECT_SELECTED);
 		super.validatePage();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2003, 2004 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.jst.j2ee.internal.migration.actions;

	import java.text.MessageFormat;
	import java.util.Arrays;
	import java.util.List;

	import org.eclipse.core.resources.IProject;
	import org.eclipse.jface.viewers.CheckStateChangedEvent;
	import org.eclipse.jface.viewers.CheckboxTableViewer;
	import org.eclipse.jface.viewers.ICheckStateListener;
	import org.eclipse.jface.viewers.IStructuredContentProvider;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jst.j2ee.internal.earcreation.EARNatureRuntime;
	import org.eclipse.jst.j2ee.internal.migration.ComposedMigrationConfig;
	import org.eclipse.jst.j2ee.internal.migration.J2EEMigrationConfig;
	import org.eclipse.jst.j2ee.internal.servertarget.ServerTargetDataModel;
	import org.eclipse.jst.j2ee.internal.wizard.ServerTargetGroup;
	import org.eclipse.swt.SWT;
	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.Event;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.help.WorkbenchHelp;
	import org.eclipse.ui.model.WorkbenchLabelProvider;
	import org.eclipse.wst.internal.common.ui.WTPWizardPage;

	/**
	*
	*/
	public abstract class GeneralModuleMigrationWizardPage extends WTPWizardPage implements ICheckStateListener {
	protected ServerTargetGroup serverTargetGroup;
	protected Label j2eeVersionLabel;
	protected Combo j2eeVersionCombo;

	protected class ProjectContentProvider implements IStructuredContentProvider {
	public ProjectContentProvider() {
	super();
	}

	public void dispose() {
	}

	public Object[] getElements(Object inputElement) {
	if (inputElement instanceof List)
	return ((List) inputElement).toArray();
	return new Object[0];
	}

	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
	}
	}

	private static final Integer PAGE_OK = new Integer(2);
	protected CheckboxTableViewer checkBoxViewer;
	protected Button cmpMigrationButton, addLocalClient, migrateProject, selectAll, deselectAll, migrateProjectStructure;
	protected ComposedMigrationConfig composedConfig;
	protected Text selectStatus;
	protected int totalModules = 0;

	/**
	* Constructor for EJBModuleMigrationWizard.
	*
	* @param pageName
	*/
	public GeneralModuleMigrationWizardPage(String pageName, ComposedMigrationConfig config) {
	super(config, pageName);
	composedConfig = config;
	}

	protected void addListeners() {
	checkBoxViewer.getControl().addListener(SWT.Selection, this);
	selectAll.addListener(SWT.Selection, this);
	deselectAll.addListener(SWT.Selection, this);
	migrateProject.addListener(SWT.Selection, this);
	migrateProjectStructure.addListener(SWT.Selection, this);
	}

	/**
	* Method changeMigrateProjectSelection.
	*/
	private void changeMigrateProjectSelection(boolean migrate) {
	List configs = getConfigs();
	for (int i = 0; i < configs.size(); i++) {
	((J2EEMigrationConfig) configs.get(i)).setMigrateVersion(migrate);
	}
	}

	/**
	* Method changeMigrateProjectSelection.
	*/
	private void changeMigrateProjectStructureSelection(boolean migrate) {
	List configs = getConfigs();
	for (int i = 0; i < configs.size(); i++) {
	((J2EEMigrationConfig) configs.get(i)).setMigrateProjectStructure(migrate);
	}
	}

	/**
	* @see org.eclipse.jface.viewers.ICheckStateListener#checkStateChanged(CheckStateChangedEvent)
	*/
	public void checkStateChanged(CheckStateChangedEvent event) {
	if (event.getElement() == null)
	return;
	((J2EEMigrationConfig) event.getElement()).setIsSelected(event.getChecked());
	}

	protected void createButtons(Composite parent) {
	Composite composite = new Composite(parent, SWT.NULL);
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	composite.setLayout(layout);
	composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
	selectAll = new Button(composite, SWT.NONE);
	selectAll.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	selectAll.setText(IMigrationWizardConstants.SELECT_ALL);
	deselectAll = new Button(composite, SWT.NONE);
	deselectAll.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	deselectAll.setText(IMigrationWizardConstants.DESELECT_ALL);
	}

	protected void createEARButtons(Composite composite) {
	migrateProjectStructure = new Button(composite, SWT.CHECK);
	migrateProjectStructure.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	migrateProjectStructure.setText(IMigrationWizardConstants.MIGRATE_PROJECT_STRUCTURE_);
	synchHelper.synchCheckbox(migrateProjectStructure, J2EEMigrationConfig.MIGRATE_PROJECT_STRUCTURE, null);
	migrateProject = new Button(composite, SWT.CHECK);
	migrateProject.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	migrateProject.setText(IMigrationWizardConstants.EAR_MIGRATE_J2EE_VERSION);
	synchHelper.synchCheckbox(migrateProject, J2EEMigrationConfig.MIGRATE_VERSION, null);
	if (!earMigrationSelected())
	createJ2EEVersionComposite(composite);
	}

	/**
	* @param composite
	*/
	protected void createJ2EEVersionComposite(Composite parent) {
	Composite composite = new Composite(parent, SWT.NULL);
	GridLayout layout = new GridLayout(3, false);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.horizontalIndent = 15;
	composite.setLayout(layout);
	composite.setLayoutData(data);
	j2eeVersionLabel = new Label(composite, SWT.NULL);
	j2eeVersionLabel.setText(IMigrationWizardConstants.J2EE_VERSION_LABEL);
	j2eeVersionCombo = new Combo(composite, SWT.BORDER \| SWT.READ_ONLY);
	data = new GridData(GridData.FILL_HORIZONTAL);
	j2eeVersionCombo.setLayoutData(data);
	Control[] deps = new Control[]{j2eeVersionLabel};
	synchHelper.synchCombo(j2eeVersionCombo, J2EEMigrationConfig.J2EE_VERSIONS_LBL, J2EEMigrationConfig.J2EE_MIGRATION_VERSION, deps);
	new Label(composite, SWT.NULL); //empty label
	serverTargetGroup = new ServerTargetGroup(composite, SWT.NULL, getServerTargetDataModel());
	}

	/**
	* @return
	*/
	private boolean earMigrationSelected() {
	IProject project = composedConfig.getTargetProject();
	if (project != null && EARNatureRuntime.hasRuntime(project))
	return true;
	return false;
	}

	/**
	* @return
	*/
	protected ServerTargetDataModel getServerTargetDataModel() {
	return ((ComposedMigrationConfig) model).getServerTargetDataModel();
	}

	protected void createNumberSelected(Composite composite) {
	selectStatus = new Text(composite, SWT.WRAP \| SWT.READ_ONLY);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	selectStatus.setLayoutData(data);
	updateSelectedStatus();
	}

	/**
	* @see org.eclipse.jst.j2ee.internal.wizard.J2EEWizardPage#createTopLevelComposite(Composite)
	*/
	protected Composite createTopLevelComposite(Composite parent) {
	Composite composite = new Composite(parent, SWT.NULL);
	GridLayout layout = new GridLayout();
	layout.numColumns = 1;
	composite.setLayout(layout);
	composite.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL \| GridData.GRAB_VERTICAL));
	WorkbenchHelp.setHelp(composite, getContextId());
	createViewer(composite);
	createButtons(composite);
	createNumberSelected(composite);
	setSpacer(composite);
	createEARButtons(composite);
	setSpacer(composite);
	setSpacer(composite);
	setSpacer(composite);
	setSpacer(composite);
	setSpacer(composite);
	setSpacer(composite);
	return composite;
	}

	/**
	*
	*/
	protected void createViewer(Composite parent) {
	Label ejbLabel = new Label(parent, SWT.NULL);
	ejbLabel.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	ejbLabel.setText(IMigrationWizardConstants.EJB_MIGRATE_AVAILABLE_PROJECTS);
	checkBoxViewer = CheckboxTableViewer.newCheckList(parent, SWT.CHECK \| SWT.BORDER \| SWT.V_SCROLL);
	GridData data = new GridData(GridData.GRAB_HORIZONTAL \| GridData.FILL_BOTH);
	data.heightHint = 90;
	checkBoxViewer.getTable().setLayoutData(data);
	checkBoxViewer.setLabelProvider(new WorkbenchLabelProvider());
	checkBoxViewer.setContentProvider(new ProjectContentProvider());
	checkBoxViewer.addCheckStateListener(this);
	}

	public void enter() {
	List configs = getConfigs();
	setTotalModules(configs.size());
	checkBoxViewer.setInput(configs);
	refreshTreeViewer();
	refreshButtonsSelection();
	handleJ2EEButtonEnablement();
	updateSelectedStatus();
	super.enter();
	}

	protected String formatNumSelected(String aPattern, int selected, int total) {
	return MessageFormat.format(aPattern, new String[]{"" + selected, "" + total}); //$NON-NLS-1$ //$NON-NLS-2$
	}

	protected abstract List getConfigs();

	protected abstract String getContextId();

	public void handleEvent(Event event) {
	if (event.widget == checkBoxViewer.getControl()) {
	updateSelectedStatus();
	} else if (event.widget == selectAll) {
	checkBoxViewer.setAllChecked(true);
	setAllChecked(event, true);
	updateSelectedStatus();
	} else if (event.widget == deselectAll) {
	checkBoxViewer.setAllChecked(false);
	setAllChecked(event, false);
	updateSelectedStatus();
	} else if (event.widget == migrateProject) {
	changeMigrateProjectSelection(migrateProject.getSelection());
	} else if (event.widget == migrateProjectStructure) {
	changeMigrateProjectStructureSelection(migrateProjectStructure.getSelection());
	}
	validatePage();
	super.handleEvent(event);
	}

	/**
	* Method handleJ2EEButtonEnablement.
	*/
	private void handleJ2EEButtonEnablement() {
	List configs = getConfigs();
	if (configs.isEmpty())
	return;
	if (composedConfig != null && composedConfig.isEAR()) {
	if (!((J2EEMigrationConfig) configs.get(0)).shouldMigrateJ2EEVersion())
	migrateProject.setEnabled(false);
	else
	migrateProject.setEnabled(true);
	if (!((J2EEMigrationConfig) configs.get(0)).shouldMigrateProjectStructure())
	migrateProjectStructure.setEnabled(false);
	else
	migrateProjectStructure.setEnabled(true);
	}
	}

	/**
	* Method refreshButtonsSelection.
	*/
	protected void refreshButtonsSelection() {
	List configs = getConfigs();
	if (configs.isEmpty())
	return;
	migrateProject.setSelection(((J2EEMigrationConfig) configs.get(0)).shouldMigrateJ2EEVersion());
	}

	protected void refreshTreeViewer() {
	List configs = getConfigs();
	for (int i = 0; i < configs.size(); i++) {
	J2EEMigrationConfig config = (J2EEMigrationConfig) configs.get(i);
	checkBoxViewer.setChecked(config, config.isSelected());
	}
	}

	/**
	* @param event
	* @param b
	*/
	private void setAllChecked(Event event, boolean b) {
	List configs = getConfigs();
	for (int i = 0; i < configs.size(); i++) {
	J2EEMigrationConfig config = (J2EEMigrationConfig) configs.get(i);
	config.setIsSelected(b);
	}
	}

	public void setSpacer(Composite composite) {
	Label space = new Label(composite, SWT.NONE);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	space.setLayoutData(data);
	}

	public void setTotalModules(int aTotalModules) {
	totalModules = aTotalModules;
	}

	protected void updateSelectedStatus() {
	int numSelected = (Arrays.asList(checkBoxViewer.getCheckedElements())).size();
	selectStatus.setText(formatNumSelected(IMigrationWizardConstants.EJB_MIGRATE_SELECTED_PROJECTS, numSelected, totalModules));
	}

	/**
	* @see org.eclipse.jst.j2ee.internal.wizard.J2EEWizardPage#validateControls()
	*/
	protected void validateControls() {
	setOKStatus(PAGE_OK);
	if ((Arrays.asList(checkBoxViewer.getCheckedElements())).size() == 0 && !composedConfig.isEAR())
	this.setErrorStatus(PAGE_OK, IMigrationWizardConstants.EJB_MIGRATE_ERROR_NO_PROJECT_SELECTED);
	super.validatePage();
	}
	}