bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/about/InstallationDialog.java - platform/eclipse.platform.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2008, 2009 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.ui.internal.about;

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import org.eclipse.core.runtime.Assert;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IConfigurationElement;
 import org.eclipse.core.runtime.IExtensionPoint;
 import org.eclipse.core.runtime.IProduct;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.dialogs.TrayDialog;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.DisposeEvent;
 import org.eclipse.swt.events.DisposeListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.FontMetrics;
 import org.eclipse.swt.graphics.GC;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.TabFolder;
 import org.eclipse.swt.widgets.TabItem;
 import org.eclipse.ui.about.IInstallationPageContainer;
 import org.eclipse.ui.about.InstallationPage;
 import org.eclipse.ui.internal.ConfigurationInfo;
 import org.eclipse.ui.internal.WorkbenchMessages;
 import org.eclipse.ui.internal.WorkbenchPlugin;
 import org.eclipse.ui.internal.registry.IWorkbenchRegistryConstants;
 import org.eclipse.ui.services.IServiceLocator;

 /**
  * @since 3.5
  *
  */
 public class InstallationDialog extends TrayDialog implements
 		IInstallationPageContainer {
 	class ButtonManager {

 		private Composite composite;
 		HashMap buttonMap = new HashMap(); // page id->Collection of page

 		// buttons

 		public ButtonManager(Composite composite) {
 			this.composite = composite;
 		}

 		public Composite getParent() {
 			return composite;
 		}

 		public void update(String currentPageId) {
 			if (composite == null || composite.isDisposed())
 				return;
 			GC metricsGC = new GC(composite);
 			FontMetrics metrics = metricsGC.getFontMetrics();
 			metricsGC.dispose();
 			List buttons = (List) buttonMap.get(currentPageId);
 			Control[] children = composite.getChildren();

 			int visibleChildren = 0;
 			Button closeButton = getButton(IDialogConstants.CLOSE_ID);

 			for (int i = 0; i < children.length; i++) {
 				Control control = children[i];
 				if (closeButton == control)
 					closeButton.dispose();
 				else {
 					control.setVisible(false);
 					setButtonLayoutData(metrics, control, false);
 				}
 			}
 			if (buttons != null) {
 				for (int i = 0; i < buttons.size(); i++) {
 					Button button = (Button) buttons.get(i);
 					button.setVisible(true);
 					setButtonLayoutData(metrics, button, true);
 					GridData data = (GridData) button.getLayoutData();
 					data.exclude = false;
 					visibleChildren++;
 				}
 			}

 			GridLayout compositeLayout = (GridLayout) composite.getLayout();
 			compositeLayout.numColumns = visibleChildren;
 			composite.layout(true);
 		}

 		protected void setButtonLayoutData(FontMetrics metrics, Control button,
 				boolean visible) {
 			GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 			int widthHint = Dialog.convertHorizontalDLUsToPixels(metrics,
 					IDialogConstants.BUTTON_WIDTH);
 			Point minSize = button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
 			data.widthHint = Math.max(widthHint, minSize.x);
 			data.exclude = !visible;
 			button.setLayoutData(data);
 		}

 		public void addPageButton(String id, Button button) {
 			List list = (List) buttonMap.get(id);
 			if (list == null) {
 				list = new ArrayList(1);
 				buttonMap.put(id, list);
 			}
 			list.add(button);
 		}

 		public void clear() {
 			buttonMap = new HashMap();
 		}
 	}

 	protected static final String ID = "ID"; //$NON-NLS-1$
 	private static final String DIALOG_SETTINGS_SECTION = "InstallationDialogSettings"; //$NON-NLS-1$
 	private final static int TAB_WIDTH_IN_DLUS = 440;
 	private final static int TAB_HEIGHT_IN_DLUS = 320;

 	private static String lastSelectedTabId = null;
 	private TabFolder folder;
 	IServiceLocator serviceLocator;
 	private ButtonManager buttonManager;
 	private Map pageToId = new HashMap();
 	private Dialog modalParent;

 	/**
 	 * @param parentShell
 	 * @param locator
 	 */
 	public InstallationDialog(Shell parentShell, IServiceLocator locator) {
 		super(parentShell);
 		serviceLocator = locator;

 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see
 	 * org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets
 	 * .Shell)
 	 */
 	protected void configureShell(Shell newShell) {
 		super.configureShell(newShell);
 		String productName = ""; //$NON-NLS-1$
 		IProduct product = Platform.getProduct();
 		if (product != null && product.getName() != null)
 			productName = product.getName();
 		newShell.setText(NLS.bind(
 				WorkbenchMessages.InstallationDialog_ShellTitle, productName));
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.eclipse.jface.dialogs.Dialog#isResizable()
 	 */
 	protected boolean isResizable() {
 		return true;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see
 	 * org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets
 	 * .Composite)
 	 */
 	protected Control createDialogArea(Composite parent) {
 		Composite composite = (Composite) super.createDialogArea(parent);

 		folder = new TabFolder(composite, SWT.NONE);
 		configureFolder();
 		createFolderItems(folder);

 		GridData folderData = new GridData(SWT.FILL, SWT.FILL, true, true);
 		folderData.widthHint = convertHorizontalDLUsToPixels(TAB_WIDTH_IN_DLUS);
 		folderData.heightHint = convertVerticalDLUsToPixels(TAB_HEIGHT_IN_DLUS);
 		folder.setLayoutData(folderData);
 		folder.addSelectionListener(createFolderSelectionListener());
 		folder.addDisposeListener(new DisposeListener() {
 			public void widgetDisposed(DisposeEvent e) {
 				releaseContributions();
 			}
 		});
 		return composite;
 	}

 	protected void createFolderItems(TabFolder folder) {
 		IConfigurationElement[] elements = ConfigurationInfo
 				.getSortedExtensions(loadElements());
 		for (int i = 0; i < elements.length; i++) {
 			IConfigurationElement element = elements[i];
 			TabItem item = new TabItem(folder, SWT.NONE);
 			item.setText(element
 					.getAttribute(IWorkbenchRegistryConstants.ATT_NAME));
 			item.setData(element);
 			item.setData(ID, element
 					.getAttribute(IWorkbenchRegistryConstants.ATT_ID));

 			Composite control = new Composite(folder, SWT.NONE);
 			control.setLayout(new GridLayout());
 			item.setControl(control);
 		}
 	}

 	protected Control createContents(Composite parent) {
 		Control control = super.createContents(parent);
 		boolean selected = false;
 		if (folder.getItemCount() > 0) {
 			if (lastSelectedTabId != null) {
 				TabItem[] items = folder.getItems();
 				for (int i = 0; i < items.length; i++)
 					if (items[i].getData(ID).equals(lastSelectedTabId)) {
 						folder.setSelection(i);
 						tabSelected(items[i]);
 						selected = true;
 						break;
 					}
 			}
 			if (!selected)
 				tabSelected(folder.getItem(0));
 		}
 		// need to reapply the dialog font now that we've created new
 		// tab items
 		Dialog.applyDialogFont(folder);
 		return control;
 	}

 	private SelectionAdapter createFolderSelectionListener() {
 		return new SelectionAdapter() {

 			public void widgetSelected(SelectionEvent e) {
 				tabSelected((TabItem) e.item);
 			}
 		};
 	}

 	/*
 	 * Must be called after contributions and button manager are created.
 	 */
 	private void tabSelected(TabItem item) {
 		if (item.getData() instanceof IConfigurationElement) {
 			final IConfigurationElement element = (IConfigurationElement) item
 					.getData();

 			Composite pageComposite = (Composite) item.getControl();
 			try {
 				final InstallationPage page = (InstallationPage) element
 						.createExecutableExtension(IWorkbenchRegistryConstants.ATT_CLASS);
 				page.createControl(pageComposite);
 				// new controls created since the dialog font was applied, so
 				// apply again.
 				Dialog.applyDialogFont(pageComposite);
 				page.setPageContainer(this);
 				// Must be done before creating the buttons because the control
 				// button creation methods
 				// use this map.
 				pageToId.put(page, element
 						.getAttribute(IWorkbenchRegistryConstants.ATT_ID));
 				createButtons(page);
 				item.setData(page);
 				item.addDisposeListener(new DisposeListener() {

 					public void widgetDisposed(DisposeEvent e) {
 						page.dispose();
 					}
 				});
 				pageComposite.layout(true, true);

 			} catch (CoreException e1) {
 				Label label = new Label(pageComposite, SWT.NONE);
 				label.setText(e1.getMessage());
 				item.setData(null);
 			}

 		}
 		String id = (String) item.getData(ID);
 		rememberSelectedTab(id);
 		buttonManager.update(id);
 		Button button = createButton(buttonManager.getParent(),
 				IDialogConstants.CLOSE_ID, IDialogConstants.CLOSE_LABEL, true);
 		GridData gd = (GridData) button.getLayoutData();
 		gd.horizontalAlignment = SWT.BEGINNING;
 		gd.horizontalIndent = convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH) / 2;
 		// Layout the button bar's parent and all of its children.  We must
 		// cascade through all children because the buttons have changed and
 		// because tray dialog inserts an extra composite in the button bar
 		// hierarchy.
 		getButtonBar().getParent().layout(true, true);

 	}

 	protected void createButtons(InstallationPage page) {
 		page.createPageButtons(buttonManager.getParent());
 		Dialog.applyDialogFont(buttonManager.getParent());
 	}

 	private void rememberSelectedTab(String pageId) {
 		lastSelectedTabId = pageId;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see
 	 * org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse
 	 * .swt.widgets.Composite)
 	 */
 	protected void createButtonsForButtonBar(Composite parent) {
 		// The button manager will handle the correct sizing of the buttons.
 		// We do not want columns equal width because we are going to add some
 		// padding in the final column (close button).
 		GridLayout layout = (GridLayout) parent.getLayout();
 		layout.makeColumnsEqualWidth = false;
 		buttonManager = new ButtonManager(parent);
 	}

 	private void configureFolder() {
 	}

 	private IConfigurationElement[] loadElements() {
 		IExtensionPoint point = Platform.getExtensionRegistry()
 				.getExtensionPoint("org.eclipse.ui", "installationPages"); //$NON-NLS-1$ //$NON-NLS-2$
 		return point.getConfigurationElements();
 	}

 	protected IDialogSettings getDialogBoundsSettings() {
 		IDialogSettings settings = WorkbenchPlugin.getDefault()
 				.getDialogSettings();
 		IDialogSettings section = settings.getSection(DIALOG_SETTINGS_SECTION);
 		if (section == null) {
 			section = settings.addNewSection(DIALOG_SETTINGS_SECTION);
 		}
 		return section;
 	}

 	protected void releaseContributions() {
 		buttonManager.clear();
 	}

 	public void closeModalContainers() {
 		close();
 		if (modalParent != null)
 			modalParent.close();
 	}

 	protected void buttonPressed(int buttonId) {
 		if (IDialogConstants.CLOSE_ID == buttonId) {
 			okPressed();
 		}
 	}

 	public void registerPageButton(InstallationPage page, Button button) {
 		buttonManager.addPageButton(pageToId(page), button);
 	}

 	protected String pageToId(InstallationPage page) {
 		String pageId = (String) pageToId.get(page);
 		Assert.isLegal(pageId != null);
 		return pageId;
 	}

 	/**
 	 * Set the modal parent dialog that was used to launch this dialog. This
 	 * should be used by any launching dialog so that the {
 	 * {@link #closeModalContainers()} method can be properly implemented.
 	 *
 	 * @param parent
 	 *            the modal parent dialog that launched this dialog, or
 	 *            <code>null</code> if there was no parent.
 	 *
 	 *            This is an internal method and should not be used outside of
 	 *            platform UI.
 	 */
 	public void setModalParent(Dialog parent) {
 		this.modalParent = parent;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2008, 2009 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.ui.internal.about;

	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;
	import org.eclipse.core.runtime.Assert;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IConfigurationElement;
	import org.eclipse.core.runtime.IExtensionPoint;
	import org.eclipse.core.runtime.IProduct;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.dialogs.TrayDialog;
	import org.eclipse.osgi.util.NLS;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.DisposeEvent;
	import org.eclipse.swt.events.DisposeListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.FontMetrics;
	import org.eclipse.swt.graphics.GC;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.TabFolder;
	import org.eclipse.swt.widgets.TabItem;
	import org.eclipse.ui.about.IInstallationPageContainer;
	import org.eclipse.ui.about.InstallationPage;
	import org.eclipse.ui.internal.ConfigurationInfo;
	import org.eclipse.ui.internal.WorkbenchMessages;
	import org.eclipse.ui.internal.WorkbenchPlugin;
	import org.eclipse.ui.internal.registry.IWorkbenchRegistryConstants;
	import org.eclipse.ui.services.IServiceLocator;

	/**
	* @since 3.5
	*
	*/
	public class InstallationDialog extends TrayDialog implements
	IInstallationPageContainer {
	class ButtonManager {

	private Composite composite;
	HashMap buttonMap = new HashMap(); // page id->Collection of page

	// buttons

	public ButtonManager(Composite composite) {
	this.composite = composite;
	}

	public Composite getParent() {
	return composite;
	}

	public void update(String currentPageId) {
	if (composite == null \|\| composite.isDisposed())
	return;
	GC metricsGC = new GC(composite);
	FontMetrics metrics = metricsGC.getFontMetrics();
	metricsGC.dispose();
	List buttons = (List) buttonMap.get(currentPageId);
	Control[] children = composite.getChildren();

	int visibleChildren = 0;
	Button closeButton = getButton(IDialogConstants.CLOSE_ID);

	for (int i = 0; i < children.length; i++) {
	Control control = children[i];
	if (closeButton == control)
	closeButton.dispose();
	else {
	control.setVisible(false);
	setButtonLayoutData(metrics, control, false);
	}
	}
	if (buttons != null) {
	for (int i = 0; i < buttons.size(); i++) {
	Button button = (Button) buttons.get(i);
	button.setVisible(true);
	setButtonLayoutData(metrics, button, true);
	GridData data = (GridData) button.getLayoutData();
	data.exclude = false;
	visibleChildren++;
	}
	}

	GridLayout compositeLayout = (GridLayout) composite.getLayout();
	compositeLayout.numColumns = visibleChildren;
	composite.layout(true);
	}

	protected void setButtonLayoutData(FontMetrics metrics, Control button,
	boolean visible) {
	GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	int widthHint = Dialog.convertHorizontalDLUsToPixels(metrics,
	IDialogConstants.BUTTON_WIDTH);
	Point minSize = button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
	data.widthHint = Math.max(widthHint, minSize.x);
	data.exclude = !visible;
	button.setLayoutData(data);
	}

	public void addPageButton(String id, Button button) {
	List list = (List) buttonMap.get(id);
	if (list == null) {
	list = new ArrayList(1);
	buttonMap.put(id, list);
	}
	list.add(button);
	}

	public void clear() {
	buttonMap = new HashMap();
	}
	}

	protected static final String ID = "ID"; //$NON-NLS-1$
	private static final String DIALOG_SETTINGS_SECTION = "InstallationDialogSettings"; //$NON-NLS-1$
	private final static int TAB_WIDTH_IN_DLUS = 440;
	private final static int TAB_HEIGHT_IN_DLUS = 320;

	private static String lastSelectedTabId = null;
	private TabFolder folder;
	IServiceLocator serviceLocator;
	private ButtonManager buttonManager;
	private Map pageToId = new HashMap();
	private Dialog modalParent;

	/**
	* @param parentShell
	* @param locator
	*/
	public InstallationDialog(Shell parentShell, IServiceLocator locator) {
	super(parentShell);
	serviceLocator = locator;

	}

	/*
	* (non-Javadoc)
	*
	* @see
	* org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets
	* .Shell)
	*/
	protected void configureShell(Shell newShell) {
	super.configureShell(newShell);
	String productName = ""; //$NON-NLS-1$
	IProduct product = Platform.getProduct();
	if (product != null && product.getName() != null)
	productName = product.getName();
	newShell.setText(NLS.bind(
	WorkbenchMessages.InstallationDialog_ShellTitle, productName));
	}

	/*
	* (non-Javadoc)
	*
	* @see org.eclipse.jface.dialogs.Dialog#isResizable()
	*/
	protected boolean isResizable() {
	return true;
	}

	/*
	* (non-Javadoc)
	*
	* @see
	* org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets
	* .Composite)
	*/
	protected Control createDialogArea(Composite parent) {
	Composite composite = (Composite) super.createDialogArea(parent);

	folder = new TabFolder(composite, SWT.NONE);
	configureFolder();
	createFolderItems(folder);

	GridData folderData = new GridData(SWT.FILL, SWT.FILL, true, true);
	folderData.widthHint = convertHorizontalDLUsToPixels(TAB_WIDTH_IN_DLUS);
	folderData.heightHint = convertVerticalDLUsToPixels(TAB_HEIGHT_IN_DLUS);
	folder.setLayoutData(folderData);
	folder.addSelectionListener(createFolderSelectionListener());
	folder.addDisposeListener(new DisposeListener() {
	public void widgetDisposed(DisposeEvent e) {
	releaseContributions();
	}
	});
	return composite;
	}

	protected void createFolderItems(TabFolder folder) {
	IConfigurationElement[] elements = ConfigurationInfo
	.getSortedExtensions(loadElements());
	for (int i = 0; i < elements.length; i++) {
	IConfigurationElement element = elements[i];
	TabItem item = new TabItem(folder, SWT.NONE);
	item.setText(element
	.getAttribute(IWorkbenchRegistryConstants.ATT_NAME));
	item.setData(element);
	item.setData(ID, element
	.getAttribute(IWorkbenchRegistryConstants.ATT_ID));

	Composite control = new Composite(folder, SWT.NONE);
	control.setLayout(new GridLayout());
	item.setControl(control);
	}
	}

	protected Control createContents(Composite parent) {
	Control control = super.createContents(parent);
	boolean selected = false;
	if (folder.getItemCount() > 0) {
	if (lastSelectedTabId != null) {
	TabItem[] items = folder.getItems();
	for (int i = 0; i < items.length; i++)
	if (items[i].getData(ID).equals(lastSelectedTabId)) {
	folder.setSelection(i);
	tabSelected(items[i]);
	selected = true;
	break;
	}
	}
	if (!selected)
	tabSelected(folder.getItem(0));
	}
	// need to reapply the dialog font now that we've created new
	// tab items
	Dialog.applyDialogFont(folder);
	return control;
	}

	private SelectionAdapter createFolderSelectionListener() {
	return new SelectionAdapter() {

	public void widgetSelected(SelectionEvent e) {
	tabSelected((TabItem) e.item);
	}
	};
	}

	/*
	* Must be called after contributions and button manager are created.
	*/
	private void tabSelected(TabItem item) {
	if (item.getData() instanceof IConfigurationElement) {
	final IConfigurationElement element = (IConfigurationElement) item
	.getData();

	Composite pageComposite = (Composite) item.getControl();
	try {
	final InstallationPage page = (InstallationPage) element
	.createExecutableExtension(IWorkbenchRegistryConstants.ATT_CLASS);
	page.createControl(pageComposite);
	// new controls created since the dialog font was applied, so
	// apply again.
	Dialog.applyDialogFont(pageComposite);
	page.setPageContainer(this);
	// Must be done before creating the buttons because the control
	// button creation methods
	// use this map.
	pageToId.put(page, element
	.getAttribute(IWorkbenchRegistryConstants.ATT_ID));
	createButtons(page);
	item.setData(page);
	item.addDisposeListener(new DisposeListener() {

	public void widgetDisposed(DisposeEvent e) {
	page.dispose();
	}
	});
	pageComposite.layout(true, true);

	} catch (CoreException e1) {
	Label label = new Label(pageComposite, SWT.NONE);
	label.setText(e1.getMessage());
	item.setData(null);
	}

	}
	String id = (String) item.getData(ID);
	rememberSelectedTab(id);
	buttonManager.update(id);
	Button button = createButton(buttonManager.getParent(),
	IDialogConstants.CLOSE_ID, IDialogConstants.CLOSE_LABEL, true);
	GridData gd = (GridData) button.getLayoutData();
	gd.horizontalAlignment = SWT.BEGINNING;
	gd.horizontalIndent = convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH) / 2;
	// Layout the button bar's parent and all of its children. We must
	// cascade through all children because the buttons have changed and
	// because tray dialog inserts an extra composite in the button bar
	// hierarchy.
	getButtonBar().getParent().layout(true, true);

	}

	protected void createButtons(InstallationPage page) {
	page.createPageButtons(buttonManager.getParent());
	Dialog.applyDialogFont(buttonManager.getParent());
	}

	private void rememberSelectedTab(String pageId) {
	lastSelectedTabId = pageId;
	}

	/*
	* (non-Javadoc)
	*
	* @see
	* org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse
	* .swt.widgets.Composite)
	*/
	protected void createButtonsForButtonBar(Composite parent) {
	// The button manager will handle the correct sizing of the buttons.
	// We do not want columns equal width because we are going to add some
	// padding in the final column (close button).
	GridLayout layout = (GridLayout) parent.getLayout();
	layout.makeColumnsEqualWidth = false;
	buttonManager = new ButtonManager(parent);
	}

	private void configureFolder() {
	}

	private IConfigurationElement[] loadElements() {
	IExtensionPoint point = Platform.getExtensionRegistry()
	.getExtensionPoint("org.eclipse.ui", "installationPages"); //$NON-NLS-1$ //$NON-NLS-2$
	return point.getConfigurationElements();
	}

	protected IDialogSettings getDialogBoundsSettings() {
	IDialogSettings settings = WorkbenchPlugin.getDefault()
	.getDialogSettings();
	IDialogSettings section = settings.getSection(DIALOG_SETTINGS_SECTION);
	if (section == null) {
	section = settings.addNewSection(DIALOG_SETTINGS_SECTION);
	}
	return section;
	}

	protected void releaseContributions() {
	buttonManager.clear();
	}

	public void closeModalContainers() {
	close();
	if (modalParent != null)
	modalParent.close();
	}

	protected void buttonPressed(int buttonId) {
	if (IDialogConstants.CLOSE_ID == buttonId) {
	okPressed();
	}
	}

	public void registerPageButton(InstallationPage page, Button button) {
	buttonManager.addPageButton(pageToId(page), button);
	}

	protected String pageToId(InstallationPage page) {
	String pageId = (String) pageToId.get(page);
	Assert.isLegal(pageId != null);
	return pageId;
	}

	/**
	* Set the modal parent dialog that was used to launch this dialog. This
	* should be used by any launching dialog so that the {
	* {@link #closeModalContainers()} method can be properly implemented.
	*
	* @param parent
	* the modal parent dialog that launched this dialog, or
	* <code>null</code> if there was no parent.
	*
	* This is an internal method and should not be used outside of
	* platform UI.
	*/
	public void setModalParent(Dialog parent) {
	this.modalParent = parent;
	}
	}