Bug 218203 – [Intro] Customize button missing from Welcome home pagev20080207

1 files changed, 15 insertions, 1119 deletions

diff --git a/org.eclipse.ui.intro.universal/src/org/eclipse/ui/internal/intro/universal/WelcomeCustomizationPreferencePage.java b/org.eclipse.ui.intro.universal/src/org/eclipse/ui/internal/intro/universal/WelcomeCustomizationPreferencePage.java
index 5469cce11..b5e45a8ba 100644
--- a/org.eclipse.ui.intro.universal/src/org/eclipse/ui/internal/intro/universal/WelcomeCustomizationPreferencePage.java
+++ b/org.eclipse.ui.intro.universal/src/org/eclipse/ui/internal/intro/universal/WelcomeCustomizationPreferencePage.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2006, 2007 IBM Corporation and others.
+ * Copyright (c) 2006, 2008 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
@@ -10,394 +10,20 @@
  *******************************************************************************/
 package org.eclipse.ui.internal.intro.universal;
 
-import java.io.FileWriter;
-import java.io.IOException;
-import java.io.PrintWriter;
-import java.io.StringWriter;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.StringTokenizer;
-
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IConfigurationElement;
 import org.eclipse.core.runtime.IExecutableExtension;
-import org.eclipse.core.runtime.IProduct;
-import org.eclipse.core.runtime.Platform;
-import org.eclipse.core.runtime.Preferences;
-import org.eclipse.jface.action.Action;
-import org.eclipse.jface.action.IMenuListener;
-import org.eclipse.jface.action.IMenuManager;
-import org.eclipse.jface.action.MenuManager;
-import org.eclipse.jface.action.Separator;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.resource.ImageDescriptor;
-import org.eclipse.jface.viewers.CellEditor;
-import org.eclipse.jface.viewers.CheckStateChangedEvent;
-import org.eclipse.jface.viewers.CheckboxTableViewer;
-import org.eclipse.jface.viewers.ComboBoxCellEditor;
-import org.eclipse.jface.viewers.ICellModifier;
-import org.eclipse.jface.viewers.ICheckStateListener;
-import org.eclipse.jface.viewers.ISelectionChangedListener;
-import org.eclipse.jface.viewers.IStructuredContentProvider;
-import org.eclipse.jface.viewers.IStructuredSelection;
-import org.eclipse.jface.viewers.ITableLabelProvider;
-import org.eclipse.jface.viewers.LabelProvider;
-import org.eclipse.jface.viewers.SelectionChangedEvent;
-import org.eclipse.jface.viewers.StructuredSelection;
-import org.eclipse.jface.viewers.TableViewer;
-import org.eclipse.jface.viewers.Viewer;
-import org.eclipse.jface.viewers.ViewerComparator;
-import org.eclipse.jface.viewers.ViewerDropAdapter;
-import org.eclipse.swt.SWT;
-import org.eclipse.swt.custom.BusyIndicator;
-import org.eclipse.swt.dnd.DND;
-import org.eclipse.swt.dnd.DragSourceEvent;
-import org.eclipse.swt.dnd.DragSourceListener;
-import org.eclipse.swt.dnd.Transfer;
-import org.eclipse.swt.dnd.TransferData;
-import org.eclipse.swt.events.PaintEvent;
-import org.eclipse.swt.events.PaintListener;
-import org.eclipse.swt.events.SelectionAdapter;
-import org.eclipse.swt.events.SelectionEvent;
-import org.eclipse.swt.graphics.Image;
-import org.eclipse.swt.graphics.Rectangle;
-import org.eclipse.swt.layout.GridData;
-import org.eclipse.swt.layout.GridLayout;
-import org.eclipse.swt.widgets.Button;
-import org.eclipse.swt.widgets.Canvas;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
-import org.eclipse.swt.widgets.FileDialog;
-import org.eclipse.swt.widgets.Label;
-import org.eclipse.swt.widgets.TabFolder;
-import org.eclipse.swt.widgets.TabItem;
-import org.eclipse.swt.widgets.Table;
-import org.eclipse.swt.widgets.TableColumn;
-import org.eclipse.swt.widgets.TableItem;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;
-import org.eclipse.ui.IWorkbenchWindow;
-import org.eclipse.ui.PlatformUI;
-import org.eclipse.ui.internal.intro.impl.IntroPlugin;
-import org.eclipse.ui.internal.intro.impl.model.IntroModelRoot;
-import org.eclipse.ui.internal.intro.universal.util.BundleUtil;
-import org.eclipse.ui.internal.intro.universal.util.ImageUtil;
-import org.eclipse.ui.internal.intro.universal.util.Log;
-import org.eclipse.ui.intro.IIntroManager;
-import org.eclipse.ui.intro.IIntroPart;
-import org.eclipse.ui.intro.config.CustomizableIntroPart;
-import org.eclipse.ui.intro.config.IIntroURL;
-import org.eclipse.ui.intro.config.IntroURLFactory;
-import org.osgi.framework.Bundle;
-
 
 public class WelcomeCustomizationPreferencePage extends PreferencePage implements IWorkbenchPreferencePage,
 		IExecutableExtension {
 
-	private static final String INTRO_ROOT_PAGES = "INTRO_ROOT_PAGES"; //$NON-NLS-1$
-	private static final String INTRO_DATA = "INTRO_DATA"; //$NON-NLS-1$
-	private static final String INTRO_THEME = "INTRO_THEME"; //$NON-NLS-1$
-	private static final String NO_ROOT_PAGES = "no_root_pages"; //$NON-NLS-1$
-	private TabFolder tabFolder;
-	private String firstPageId;
-	private Composite pageContainer;
-	private TableViewer themes;
-	private TableViewer available;
-	private TableViewer topLeft;
-	private TableViewer topRight;
-	private TableViewer bottomLeft;
-	private TableViewer bottomRight;
-	private CheckboxTableViewer rootPages;
-	private ArrayList introRootPages = new ArrayList();
-	private ArrayList themeList = new ArrayList();
-	private IntroTheme introTheme;
-	private String introThemeId;
-	private IntroData introData;
-	private Canvas themePreview;
-	private TableContentProvider contentProvider;
-	private TableLabelProvider labelProvider;
-	private Button applyToAll;
-	private Image extensionImage;
-	private Image themeImage;
-	private Image ihighImage;
-	private Image ilowImage;
-	private Image inewImage;
-	private Image icalloutImage;
-	private static final Transfer[] TRANSFER_TYPES = new Transfer[] { ExtensionDataTransfer.getInstance() };
-
-
-	private static final RootPage ROOT_PAGE_TABLE[] = new RootPage[] {
-			new RootPage(IUniversalIntroConstants.ID_OVERVIEW,
-					Messages.WelcomeCustomizationPreferencePage_overview,
-					Messages.WelcomeCustomizationPreferencePage_NoMnemonic_overview),
-			new RootPage(IUniversalIntroConstants.ID_FIRSTSTEPS,
-					Messages.WelcomeCustomizationPreferencePage_firststeps,
-					Messages.WelcomeCustomizationPreferencePage_NoMnemonic_firststeps),
-			new RootPage(IUniversalIntroConstants.ID_TUTORIALS,
-					Messages.WelcomeCustomizationPreferencePage_tutorials,
-					Messages.WelcomeCustomizationPreferencePage_NoMnemonic_tutorials),
-			new RootPage(IUniversalIntroConstants.ID_SAMPLES,
-					Messages.WelcomeCustomizationPreferencePage_samples,
-					Messages.WelcomeCustomizationPreferencePage_NoMnemonic_samples),
-			new RootPage(IUniversalIntroConstants.ID_WHATSNEW,
-					Messages.WelcomeCustomizationPreferencePage_whatsnew,
-					Messages.WelcomeCustomizationPreferencePage_NoMnemonic_whatsnew),
-			new RootPage(IUniversalIntroConstants.ID_WEBRESOURCES,
-					Messages.WelcomeCustomizationPreferencePage_webresources,
-					Messages.WelcomeCustomizationPreferencePage_NoMnemonic_webresources),
-			new RootPage(IUniversalIntroConstants.ID_MIGRATE,
-					Messages.WelcomeCustomizationPreferencePage_migrate,
-					Messages.WelcomeCustomizationPreferencePage_NoMnemonic_migrate) };
-
-	static class RootPage {
-
-		public String id;
-		public String name;
-		public String nameNoMnemonic;
-
-		public RootPage(String id, String name, String nameNoMnemonic) {
-			this.id = id;
-			this.name = name;
-			this.nameNoMnemonic = nameNoMnemonic;
-		}
-		
-		public String getName() {
-			return name;
-		}
-
-		public String getNameNoMnemonic() {
-			return nameNoMnemonic;
-		}
-
-		public boolean equals(Object obj) {
-			if (obj == this)
-				return true;
-			if (obj == null)
-				return false;
-			if (obj instanceof RootPage) {
-				RootPage page = (RootPage) obj;
-				return page.id.equals(id) && page.name.equals(name);
-			}
-			return false;
-		}
-
-		public String toString() {
-			return name;
-		}
-	}
-
-	class TableContentProvider implements IStructuredContentProvider {
-
-		public Object[] getElements(Object inputElement) {
-			if (inputElement == ROOT_PAGE_TABLE)
-				return ROOT_PAGE_TABLE;
-			if (inputElement instanceof GroupData) {
-				return ((GroupData) inputElement).getChildren();
-			}
-			if (inputElement == themes) {
-				return themeList.toArray();
-			}
-			return new Object[0];
-		}
-
-		public void dispose() {
-		}
-
-		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
-		}
-	}
-
-	class TableDragSourceListener implements DragSourceListener {
-
-		TableViewer viewer;
-		BaseData[] sel;
-
-		public TableDragSourceListener(TableViewer viewer) {
-			this.viewer = viewer;
-		}
-
-		public void dragStart(DragSourceEvent event) {
-			IStructuredSelection ssel = (IStructuredSelection) viewer.getSelection();
-			if (ssel.size() > 0) {
-				event.doit = true;
-			} else {
-				event.doit = false;
-			}
-		};
-
-		public void dragSetData(DragSourceEvent event) {
-			IStructuredSelection ssel = (IStructuredSelection) viewer.getSelection();
-			BaseData[] array = new BaseData[ssel.size()];
-			int i = 0;
-			for (Iterator iter = ssel.iterator(); iter.hasNext();) {
-				array[i++] = (BaseData) iter.next();
-			}
-			event.data = array;
-			sel = array;
-		}
-
-		public void dragFinished(DragSourceEvent event) {
-			if (event.detail == DND.DROP_MOVE) {
-				GroupData gd = (GroupData) viewer.getInput();
-				for (int i = 0; i < sel.length; i++) {
-					BaseData ed = sel[i];
-					gd.remove(ed);
-				}
-				viewer.refresh();
-				updateColumnSizes(viewer);
-			}
-			sel = null;
-		}
-	}
-
-	class TableDropTargetListener extends ViewerDropAdapter {
-
-		public TableDropTargetListener(TableViewer viewer) {
-			super(viewer);
-		}
-
-		public boolean performDrop(Object data) {
-			BaseData target = (BaseData) getCurrentTarget();
-			int loc = getCurrentLocation();
-			GroupData gd = (GroupData) getViewer().getInput();
-			if (gd == null)
-				gd = createTargetGd(getViewer());
-			BaseData[] sel = (BaseData[]) data;
-
-			int index = target != null ? gd.getIndexOf(target) : -1;
-			int startingIndex = getStartIndex(gd, sel);
-			if (target != null) {
-				if (loc == LOCATION_AFTER
-						|| (loc == LOCATION_ON && startingIndex != -1 && startingIndex < index))
-					index++;
-				else if (index > 0 && loc == LOCATION_BEFORE)
-					index--;
-			}
-
-			for (int i = 0; i < sel.length; i++) {
-				BaseData ed = sel[i];
-				if (index == -1)
-					gd.add(ed);
-				else
-					gd.add(index++, ed);
-			}
-			if (getViewer().getInput() != null)
-				getViewer().refresh();
-			else
-				getViewer().setInput(gd);
-			updateColumnSizes((TableViewer) getViewer());
-			return true;
-		}
-
-		private int getStartIndex(GroupData gd, BaseData[] sel) {
-			for (int i = 0; i < sel.length; i++) {
-				BaseData ed = sel[i];
-				int index = gd.getIndexOf(ed.getId());
-				if (index != -1)
-					return index;
-			}
-			return -1;
-		}
-
-		public boolean validateDrop(Object target, int operation, TransferData transferType) {
-			return ExtensionDataTransfer.getInstance().isSupportedType(transferType);
-		}
-	}
-
-	class TableLabelProvider extends LabelProvider implements ITableLabelProvider {
-
-		public String getText(Object obj) {
-			if (obj instanceof RootPage) {
-				return ((RootPage) obj).getNameNoMnemonic();
-			}
-			if (obj instanceof ExtensionData) {
-				ExtensionData ed = (ExtensionData) obj;
-				String name = ed.getName();
-				if (name != null && name.length() > 0)
-					return name;
-				return ed.getId();
-			}
-			if (obj instanceof SeparatorData) {
-				return Messages.WelcomeCustomizationPreferencePage_horizontalSeparator;
-			}
-			if (obj instanceof IntroTheme) {
-				IntroTheme bg = (IntroTheme) obj;
-				return bg.getName();
-			}
-			return super.getText(obj);
-		}
-		
-		public Image getImage(Object obj) {
-			if (obj instanceof ExtensionData) {
-				ExtensionData ed = (ExtensionData) obj;
-				switch (ed.getImportance()) {
-				case ExtensionData.HIGH:
-					return ihighImage;
-				case ExtensionData.LOW:
-					return ilowImage;
-				case ExtensionData.NEW:
-					return inewImage;
-				case ExtensionData.CALLOUT:
-					return icalloutImage;
-				}
-				return extensionImage;
-			}
-			if (obj instanceof IntroTheme)
-				return themeImage;
-			return null;
-		}
-
-		public Image getColumnImage(Object element, int columnIndex) {
-			if (columnIndex == 0)
-				return getImage(element);
-			return null;
-		}
-
-		public String getColumnText(Object element, int columnIndex) {
-			if (columnIndex == 1 || element instanceof IntroTheme || element instanceof RootPage)
-				return getText(element);
-			return null;
-		}
-	}
-
-	class IntroTheme {
-		IConfigurationElement element;
-		Image previewImage;
-
-		public String getName() {
-			return element.getAttribute("name"); //$NON-NLS-1$
-		}
-
-		public String getId() {
-			return element.getAttribute("id"); //$NON-NLS-1$
-		}
-
-		public IntroTheme(IConfigurationElement element) {
-			this.element = element;
-		}
-		
-		public Image getPreviewImage() {
-			if (previewImage==null) {
-				String path = element.getAttribute("previewImage"); //$NON-NLS-1$
-				if (path!=null) {
-				    String bid = element.getDeclaringExtension().getNamespaceIdentifier();
-				    Bundle bundle = Platform.getBundle(bid);
-				    if (bundle!=null) {
-				    	ImageDescriptor desc = ImageUtil.createImageDescriptor(bundle, path);
-				    	previewImage = desc.createImage();
-				    }
-				}
-			}
-			return previewImage;
-		}
-		
-		public void dispose() {
-			if (previewImage!=null) {
-				previewImage.dispose();
-				previewImage=null;
-			}
-		}
-	}
+    private CustomizationContentsArea contentsArea;
 
 	public WelcomeCustomizationPreferencePage() {
 	}
@@ -409,771 +35,41 @@ public class WelcomeCustomizationPreferencePage extends PreferencePage implement
 	public WelcomeCustomizationPreferencePage(String title, ImageDescriptor image) {
 		super(title, image);
 	}
-
-	protected Control createContents(Composite parent) {
-		Composite container = new Composite(parent, SWT.NULL);
-		GridData data = new GridData();
-		data.verticalAlignment = GridData.FILL;
-		data.horizontalAlignment = GridData.FILL;
-		container.setLayoutData(data);
-		GridLayout layout = new GridLayout();
-		layout.marginHeight = 0;
-		layout.marginWidth = 0;
-		container.setLayout(layout);
-		tabFolder = new TabFolder(container, SWT.TOP);
-		tabFolder.setLayoutData(new GridData(GridData.FILL_BOTH));
-		tabFolder.addSelectionListener(new SelectionAdapter() {
-
-			public void widgetSelected(SelectionEvent e) {
-				TabItem[] selection = tabFolder.getSelection();
-				onTabChange(selection[0]);
-			}
-		});
-		applyToAll = new Button(container, SWT.CHECK);
-		applyToAll.setText(Messages.WelcomeCustomizationPreferencePage_applyToAll);
-		contentProvider = new TableContentProvider();
-		labelProvider = new TableLabelProvider();
-		if (isCustomizationMode()) {
-			Button serialize = new Button(container, SWT.PUSH);
-			serialize.setText(Messages.WelcomeCustomizationPreferencePage_serialize);
-			serialize.addSelectionListener(new SelectionAdapter() {
-
-				public void widgetSelected(SelectionEvent e) {
-					doSerializeState();
-				}
-			});
-		}
-		extensionImage = ImageUtil.createImage("full/obj16/extension_obj.gif"); //$NON-NLS-1$
-		ihighImage = ImageUtil.createImage("full/obj16/ihigh_obj.gif"); //$NON-NLS-1$
-		ilowImage = ImageUtil.createImage("full/obj16/ilow_obj.gif"); //$NON-NLS-1$
-		inewImage = ImageUtil.createImage("full/obj16/inew_obj.gif"); //$NON-NLS-1$
-		icalloutImage = ImageUtil.createImage("full/obj16/icallout_obj.gif"); //$NON-NLS-1$
-		themeImage = ImageUtil.createImage("full/obj16/image_obj.gif"); //$NON-NLS-1$
-		addPages();
-		org.eclipse.jface.dialogs.Dialog.applyDialogFont(container);
-		PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, "org.eclipse.ui.intro.universal.universalWelcomePreference"); //$NON-NLS-1$
-		return container;
-	}
-
-	private void doSerializeState() {
-		FileDialog fd = new FileDialog(getShell(), SWT.SAVE);
-		fd.setText(Messages.WelcomeCustomizationPreferencePage_serializeTitle);
-		String fileName = fd.open();
-		if (fileName != null) {
-			try {
-				FileWriter writer = new FileWriter(fileName);
-				PrintWriter pwriter = new PrintWriter(writer);
-				introData.write(pwriter);
-				pwriter.close();
-			} catch (IOException e) {
-				// show an error dialog in addition
-				Log.error("Error while saving the intro data file", e); //$NON-NLS-1$
-			}
+	
+	private CustomizationContentsArea getContentsArea() {
+		if (contentsArea == null) {
+			contentsArea = new CustomizationContentsArea();
 		}
+		return contentsArea;
 	}
 
-	private boolean isCustomizationMode() {
-		/*
-		 * String[] args = Platform.getApplicationArgs(); for (int i = 0; i < args.length; i++) { if
-		 * (args[i].equalsIgnoreCase("-welcomeCustomization")) //$NON-NLS-1$ return true; } return
-		 * false;
-		 */
-		return true;
-	}
-
-	public void init(IWorkbench workbench) {
-	}
-
-	private void addPages() {
-		loadData(false);
-		addHomePage();
-		createPageContainer();
-		addRootPages();
-		updateWidgetsFromData();
-		selectFirstPage();
-	}
-
-	private void addRootPages() {
-		addPage(IUniversalIntroConstants.ID_OVERVIEW);
-		addPage(IUniversalIntroConstants.ID_FIRSTSTEPS);
-		addPage(IUniversalIntroConstants.ID_TUTORIALS);
-		addPage(IUniversalIntroConstants.ID_SAMPLES);
-		addPage(IUniversalIntroConstants.ID_WHATSNEW);
-		addPage(IUniversalIntroConstants.ID_WEBRESOURCES);
-		addPage(IUniversalIntroConstants.ID_MIGRATE);
-	}
-
-	private void createPageContainer() {
-		pageContainer = new Composite(tabFolder, SWT.NULL);
-		GridLayout layout = new GridLayout();
-		//layout.horizontalSpacing = 10;
-		pageContainer.setLayout(layout);
-		layout.numColumns = 4;
-		//layout.makeColumnsEqualWidth = true;
-		Label label;
-		label = new Label(pageContainer, SWT.WRAP);
-		label.setText(Messages.WelcomeCustomizationPreferencePage_pageDesc);
-		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
-		gd.horizontalSpan = 4;
-		label.setLayoutData(gd);
-		label = new Label(pageContainer, SWT.SEPARATOR | SWT.HORIZONTAL);
-		gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
-		gd.horizontalSpan = 4;
-		label.setLayoutData(gd);
-		label = new Label(pageContainer, SWT.NULL);
-		label.setText(Messages.WelcomeCustomizationPreferencePage_available);
-		gd = new GridData();
-		label.setLayoutData(gd);
-		label = new Label(pageContainer, SWT.SEPARATOR | SWT.VERTICAL);
-		gd = new GridData(GridData.VERTICAL_ALIGN_FILL);
-		gd.verticalSpan = 3;
-		gd.widthHint = 10;
-		label.setLayoutData(gd);
-		
-		label = new Label(pageContainer, SWT.NULL);
-		label.setText(Messages.WelcomeCustomizationPreferencePage_left);
-		label = new Label(pageContainer, SWT.NULL);
-		label.setText(Messages.WelcomeCustomizationPreferencePage_right);
-		available = createTableViewer(pageContainer, "hidden"); //$NON-NLS-1$
-		available.setComparator(new ViewerComparator());
-		gd = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL);
-		gd.verticalSpan = 2;
-		gd.widthHint = 100;
-		//gd.horizontalSpan = 2;
-		available.getControl().setLayoutData(gd);
-
-		topLeft = createTableViewer(pageContainer, "top-left"); //$NON-NLS-1$
-		gd = new GridData(GridData.FILL_BOTH);
-		gd.widthHint = 100;
-		topLeft.getControl().setLayoutData(gd);
-
-		topRight = createTableViewer(pageContainer, "top-right"); //$NON-NLS-1$
-		gd = new GridData(GridData.FILL_BOTH);
-		gd.widthHint = 100;
-		topRight.getControl().setLayoutData(gd);
-
-		//label = new Label(pageContainer, SWT.NULL);
-		//label.setText(Messages.WelcomeCustomizationPreferencePage_bottom);
-		bottomLeft = createTableViewer(pageContainer, "bottom-left"); //$NON-NLS-1$
-		gd = new GridData(GridData.FILL_BOTH);
-		gd.widthHint = 100;
-		bottomLeft.getControl().setLayoutData(gd);
-		
-		bottomRight = createTableViewer(pageContainer, "bottom-right"); //$NON-NLS-1$
-		gd = new GridData(GridData.FILL_BOTH);
-		gd.widthHint = 100;
-		bottomRight.getControl().setLayoutData(gd);
-	}
-
-	private void updatePageContainer(String pageId, PageData pd) {
-		if (pageId == null)
-			return;
-		refreshQuadrant(topLeft, pd, IUniversalIntroConstants.DIV_LAYOUT_TOP_LEFT);
-		refreshQuadrant(topRight, pd, IUniversalIntroConstants.DIV_LAYOUT_TOP_RIGHT);
-		refreshQuadrant(bottomLeft, pd, IUniversalIntroConstants.DIV_LAYOUT_BOTTOM_LEFT);
-		refreshQuadrant(bottomRight, pd, IUniversalIntroConstants.DIV_LAYOUT_BOTTOM_RIGHT);
-		refreshQuadrant(available, pd, IUniversalIntroConstants.HIDDEN);
-	}
-
-	private void refreshQuadrant(TableViewer viewer, PageData pd, String quadrant) {
-		GroupData gd = pd!=null?pd.findGroup(quadrant):null;
-		viewer.setInput(gd);
-		if (gd!=null)
-			updateColumnSizes(viewer);
-	}
-
-	private void onTabChange(TabItem item) {
-		String id = (String) item.getData();
-		if (item.getControl() == pageContainer)
-			updatePageContainer(id, (PageData) item.getData("pageData")); //$NON-NLS-1$
-	}
-
-	private void loadData(boolean fromDefault) {
-		IProduct product = Platform.getProduct();
-		if (product == null)
-			return;
-		String pid = product.getId();
-		introRootPages.clear();
-		Preferences prefs = UniversalIntroPlugin.getDefault().getPluginPreferences();
-		Preferences iprefs = IntroPlugin.getDefault().getPluginPreferences();
-		// 1. Root pages
-		// try product-qualified value first
-		String key = pid + "_" + INTRO_ROOT_PAGES; //$NON-NLS-1$
-		String rootPages = fromDefault ? prefs.getDefaultString(key) : prefs.getString(key);
-		if (rootPages.length() == 0) {
-			rootPages = fromDefault ? prefs.getDefaultString(INTRO_ROOT_PAGES) : prefs
-					.getString(INTRO_ROOT_PAGES);
-		}
-		if (rootPages.length() > 0) {
-			StringTokenizer stok = new StringTokenizer(rootPages, ","); //$NON-NLS-1$
-			while (stok.hasMoreTokens()) {
-				String tok = stok.nextToken().trim();
-				if (!NO_ROOT_PAGES.equals(tok)) {
-				    introRootPages.add(tok);
-				}
-			}
-		}
-		// 3. Active theme
-		key = pid + "_" + INTRO_THEME; //$NON-NLS-1$
-		String value = fromDefault ? iprefs.getDefaultString(key) : iprefs.getString(key);
-		if (value.length() == 0) {
-			key = INTRO_THEME;
-			value = fromDefault ? iprefs.getDefaultString(key) : iprefs.getString(key);
-		}
-		if (value.length() > 0)
-			introThemeId = value;
-		// 4. Intro data
-		key = pid + "_" + INTRO_DATA; //$NON-NLS-1$
-		value = fromDefault ? prefs.getDefaultString(key) : prefs.getString(key);
-		if (value.length() == 0) {
-			key = INTRO_DATA;
-			value = fromDefault ? prefs.getDefaultString(key) : prefs.getString(key);
-		}
-		if (value.length() == 0)
-			value = null;
-		if (value != null && value.startsWith("product:")) //$NON-NLS-1$
-			value = value.substring(8);
-		value = BundleUtil.getResolvedResourceLocation(value, product.getDefiningBundle());
-		introData = new IntroData(pid, value, true);
-		introData.addImplicitContent();
+	protected Control createContents(Composite parent) {
+		getContentsArea().setShell(getShell());
+		return getContentsArea().createContents(parent);
 	}
 
 	public void dispose() {
-		Iterator iter = themeList.iterator();
-		while (iter.hasNext()) {
-			((IntroTheme)iter.next()).dispose();
-		}
-		extensionImage.dispose();
-		ihighImage.dispose();
-		ilowImage.dispose();
-		inewImage.dispose();
-		icalloutImage.dispose();
-		themeImage.dispose();
+		getContentsArea().dispose();
 		super.dispose();
 	}
 
-	private void updateIntroThemeFromData() {
-		if (introThemeId != null) {
-			for (int i = 0; i < themeList.size(); i++) {
-				IntroTheme theme = (IntroTheme) themeList.get(i);
-				if (theme.getId().equals(introThemeId)) {
-					introTheme = theme;
-					break;
-				}
-			}
-		}
-		updateThemePreview();
-	}
-
-	private void updateWidgetsFromData() {
-		// sync up intro background part
-		updateIntroThemeFromData();
-		// sync up the root page checklist
-		rootPages.setInput(ROOT_PAGE_TABLE);
-		ArrayList selected = new ArrayList();
-		for (int i = 0; i < ROOT_PAGE_TABLE.length; i++) {
-			String id = ROOT_PAGE_TABLE[i].id;
-			if (introRootPages.contains(id))
-				selected.add(ROOT_PAGE_TABLE[i]);
-		}
-		rootPages.setCheckedElements(selected.toArray());
-	}
-
-	private void updateThemePreview() {
-		themes.setInput(themes);
-		if (introTheme != null)
-			themes.setSelection(new StructuredSelection(introTheme), true);
-		themePreview.redraw();
-	}
-
 	public boolean performOk() {
-		saveData();
-		BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
-
-			public void run() {
-				restartIntro();
-			}
-		});
-		return true;
-	}
-
-	/**
-	 * Remember the current page, close intro, reopen it and show the saved page.
-	 * 
-	 */
-	private void restartIntro() {
-		IIntroManager manager = PlatformUI.getWorkbench().getIntroManager();
-		IIntroPart part = manager.getIntro();
-		if (part != null && part instanceof CustomizableIntroPart) {
-			IntroModelRoot modelRoot = IntroPlugin.getDefault().getIntroModelRoot();
-			String currentPageId = modelRoot.getCurrentPageId();
-			IWorkbenchWindow window = part.getIntroSite().getWorkbenchWindow();
-			boolean standby = manager.isIntroStandby(part);
-			PlatformUI.getWorkbench().getIntroManager().closeIntro(part);
-			IntroPlugin.getDefault().resetVolatileImageRegistry();
-			UniversalIntroPlugin.getDefault().resetVolatileImageRegistry();
-			part = PlatformUI.getWorkbench().getIntroManager().showIntro(window, standby);
-			if (part != null  && !standby) {
-				StringBuffer url = new StringBuffer();
-				url.append("http://org.eclipse.ui.intro/showPage?id="); //$NON-NLS-1$
-				url.append(currentPageId);
-				IIntroURL introURL = IntroURLFactory.createIntroURL(url.toString());
-				if (introURL != null)
-					introURL.execute();
-			}
-		}
+		return getContentsArea().performOk();
 	}
 
 	protected void performDefaults() {
-		loadData(true);
-		// Dispose all the root page tabs
-		TabItem[] items = tabFolder.getItems();
-		for (int i = 0; i < items.length; i++) {
-			if (items[i].getData("pageData") != null) //$NON-NLS-1$
-				items[i].dispose();
-		}
-		// Add them back in based on the checked state
-		addRootPages();
-		updateWidgetsFromData();
-		// Get the items again
-		items = tabFolder.getItems();
-		// Select root
-		onTabChange(items[0]);
-		super.performDefaults();
-	}
-
-	private void saveData() {
-		Preferences prefs = UniversalIntroPlugin.getDefault().getPluginPreferences();
-		Preferences iprefs = IntroPlugin.getDefault().getPluginPreferences();
-		boolean toAll = applyToAll.getSelection();
-		IProduct product = Platform.getProduct();
-		if (product == null)
-			return;
-		String pid = product.getId();
-		StringBuffer sbuf = new StringBuffer();
-		if (introRootPages.size() == 0) {
-			// An empty string means no preference so special value needed
-			// to indicate no root pages.
-			sbuf.append(NO_ROOT_PAGES);
-		}
-		for (int i = 0; i < introRootPages.size(); i++) {
-			if (i > 0)
-				sbuf.append(","); //$NON-NLS-1$
-			sbuf.append((String) introRootPages.get(i));
-		}
-		String key = pid + "_" + INTRO_ROOT_PAGES; //$NON-NLS-1$
-		prefs.setValue(key, sbuf.toString());
-		if (toAll) {
-			key = INTRO_ROOT_PAGES;
-			prefs.setValue(key, sbuf.toString());
-		}
-		// store page layouts
-		StringWriter writer = new StringWriter();
-		PrintWriter pwriter = new PrintWriter(writer);
-		introData.write(pwriter);
-		pwriter.close();
-		String value = writer.toString();
-		key = pid + "_" + INTRO_DATA; //$NON-NLS-1$
-		prefs.setValue(key, value);
-		if (toAll) {
-			key = INTRO_DATA;
-			prefs.setValue(key, value);
-		}
-		if (introTheme != null) {
-			key = pid + "_" + INTRO_THEME; //$NON-NLS-1$
-			value = introTheme.getId();
-			iprefs.setValue(key, value);
-		}
-		if (toAll) {
-			key = INTRO_THEME;
-			iprefs.setValue(key, value);
-		}
-		UniversalIntroPlugin.getDefault().savePluginPreferences();
-		IntroPlugin.getDefault().savePluginPreferences();
-	}
-
-	private void addHomePage() {
-		TabItem item = new TabItem(tabFolder, SWT.NULL);
-		item.setText(Messages.WelcomeCustomizationPreferencePage_home);
-		Composite container = new Composite(tabFolder, SWT.NULL);
-		GridLayout layout = new GridLayout();
-		layout.numColumns = 2;
-		container.setLayout(layout);
-		Composite leftColumn = new Composite(container, SWT.NULL);
-		layout = new GridLayout();
-		layout.marginWidth = layout.marginHeight = 0;
-		leftColumn.setLayout(layout);
-		leftColumn.setLayoutData(new GridData(GridData.FILL_BOTH));
-		Composite rightColumn = new Composite(container, SWT.NULL);
-		layout = new GridLayout();
-		layout.marginWidth = layout.marginHeight = 0;
-		rightColumn.setLayout(layout);
-		rightColumn.setLayoutData(new GridData(GridData.FILL_BOTH));
-
-		Label themeLabel = new Label(leftColumn, SWT.NULL);
-		themeLabel.setText(Messages.WelcomeCustomizationPreferencePage_background);
-		GridData gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
-		themeLabel.setLayoutData(gd);
-		themes = new TableViewer(leftColumn, SWT.BORDER);
-		themes.getControl().setLayoutData(new GridData(GridData.FILL_BOTH));
-		themes.setContentProvider(contentProvider);
-		themes.setLabelProvider(labelProvider);
-		themes.addSelectionChangedListener(new ISelectionChangedListener() {
-			public void selectionChanged(SelectionChangedEvent e) {
-				Object sel = ((StructuredSelection) e.getSelection()).getFirstElement();
-				introTheme = (IntroTheme) sel;
-				themePreview.redraw();
-			}
-		});
-		loadThemes();
-		Label previewLabel = new Label(rightColumn, SWT.NULL);
-		previewLabel.setText(Messages.WelcomeCustomizationPreferencePage_preview);
-		themePreview = new Canvas(rightColumn, SWT.NULL);
-		gd = new GridData();
-		gd.widthHint = 160+20;
-		gd.heightHint = 120+20;
-		themePreview.setLayoutData(gd);
-		themePreview.addPaintListener(new PaintListener() {
-
-			public void paintControl(PaintEvent e) {
-				if (introTheme == null)
-					return;
-				Image bgImage = introTheme.getPreviewImage();
-				if (bgImage == null)
-					return;
-				//Rectangle carea = themePreview.getClientArea();
-				Rectangle ibounds = bgImage.getBounds();
-				e.gc.drawImage(bgImage, 0, 0, ibounds.width, ibounds.height, 10, 10, 160, 120);
-			}
-		});
-		Label label = new Label(container, SWT.NULL);
-		label.setText(Messages.WelcomeCustomizationPreferencePage_rootpages);
-		gd = new GridData();
-		gd.horizontalSpan = 2;
-		label.setLayoutData(gd);
-		rootPages = CheckboxTableViewer.newCheckList(container, SWT.BORDER);
-		rootPages.setContentProvider(contentProvider);
-		rootPages.setLabelProvider(labelProvider);
-		gd = new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL);
-		gd.horizontalSpan = 2;
-		rootPages.getControl().setLayoutData(gd);
-		rootPages.addCheckStateListener(new ICheckStateListener() {
-
-			public void checkStateChanged(CheckStateChangedEvent event) {
-				RootPage page = (RootPage) event.getElement();
-				boolean checked = event.getChecked();
-				onPageChecked(page.id, checked);
-			}
-		});
-		item.setControl(container);
-	}
-	
-	private void loadThemes() {
-		IConfigurationElement [] elements = Platform.getExtensionRegistry().getConfigurationElementsFor("org.eclipse.ui.intro.configExtension"); //$NON-NLS-1$
-		for (int i=0; i<elements.length; i++) {
-			if (elements[i].getName().equals("theme")) { //$NON-NLS-1$
-				themeList.add(new IntroTheme(elements[i]));
-			}
-		}
-	}
-
-	private void addPage(String id) {
-		if (!getRootPageSelected(id))
-			return;
-		TabItem item = new TabItem(tabFolder, SWT.NULL);
-		item.setText(getRootPageName(id));
-		item.setControl(pageContainer);
-		item.setData(id);
-		PageData pd = introData.getPage(id);
-		item.setData("pageData", pd); //$NON-NLS-1$
-	}
-
-	private void onPageChecked(String id, boolean checked) {
-		TabItem[] items = tabFolder.getItems();
-		if (checked) {
-			for (int i = 0; i < items.length; i++) {
-				TabItem item = items[i];
-				if (item.getData() != null)
-					item.dispose();
-			}
-			introRootPages.add(id);
-			addRootPages();
-		} else {
-			for (int i = 0; i < items.length; i++) {
-				TabItem item = items[i];
-				String itemId = (String) item.getData();
-				if (itemId != null && itemId.equals(id)) {
-					item.dispose();
-					introRootPages.remove(id);
-					return;
-				}
-			}
-		}
+		getContentsArea().performDefaults();
 	}
 
-	private String getRootPageName(String id) {
-		for (int i = 0; i < ROOT_PAGE_TABLE.length; i++) {
-			if (ROOT_PAGE_TABLE[i].id.equals(id))
-				return ROOT_PAGE_TABLE[i].getName();
-		}
-		return "?"; //$NON-NLS-1$
-	}
-
-	private boolean getRootPageSelected(String id) {
-		for (int i = 0; i < introRootPages.size(); i++) {
-			String cid = (String) introRootPages.get(i);
-			if (cid.equals(id))
-				return true;
-		}
-		return false;
-	}
 
 	public void setInitializationData(IConfigurationElement config, String propertyName, Object data)
 			throws CoreException {
 	}
 
-	private void createPopupMenu(final TableViewer viewer) {
-		MenuManager manager = new MenuManager();
-		manager.createContextMenu(viewer.getControl());
-		viewer.getControl().setMenu(manager.getMenu());
-		manager.setRemoveAllWhenShown(true);
-		manager.addMenuListener(new IMenuListener() {
-
-			public void menuAboutToShow(IMenuManager manager) {
-				fillPopupMenu(manager, viewer);
-			}
-		});
-	}
-
-	private void addDNDSupport(TableViewer viewer) {
-		viewer.addDragSupport(DND.DROP_MOVE, TRANSFER_TYPES, new TableDragSourceListener(viewer));
-		viewer.addDropSupport(DND.DROP_MOVE, TRANSFER_TYPES, new TableDropTargetListener(viewer));
-	}
-
-	private TableViewer createTableViewer(Composite parent, String id) {
-		final Table table = new Table(parent, SWT.BORDER | SWT.FULL_SELECTION);
-		final TableColumn column1 = new TableColumn(table, SWT.NULL);
-		column1.setMoveable(false);
-		column1.setWidth(20);
-		column1.setResizable(false);
-		final TableColumn column2 = new TableColumn(table, SWT.NULL);
-		column2.setResizable(true);
-		final TableViewer viewer = new TableViewer(table);
-		CellEditor[] editors = new CellEditor[2];
-		editors[0] = new ComboBoxCellEditor(table, ExtensionData.IMPORTANCE_NAME_TABLE, SWT.READ_ONLY);
-		viewer.setCellEditors(editors);
-		viewer.setColumnProperties(new String[] { IUniversalIntroConstants.P_IMPORTANCE,
-				IUniversalIntroConstants.P_NAME });
-		viewer.setCellModifier(new ICellModifier() {
-
-			public boolean canModify(Object element, String property) {
-				return property.equals(IUniversalIntroConstants.P_IMPORTANCE);
-			}
-
-			public Object getValue(Object element, String property) {
-				if (element instanceof ExtensionData) {
-					ExtensionData ed = (ExtensionData) element;
-					if (property.equals(IUniversalIntroConstants.P_IMPORTANCE))
-						return new Integer(ed.getImportance());
-				}
-				return null;
-			}
-
-			public void modify(Object element, String property, Object value) {
-				Integer ivalue = (Integer) value;
-				TableItem item = (TableItem) element;
-				ExtensionData ed = (ExtensionData) item.getData();
-				ed.setImportance(ivalue.intValue());
-				viewer.update(ed, new String [] {IUniversalIntroConstants.P_IMPORTANCE});
-			}
-		});
-		viewer.setContentProvider(contentProvider);
-		viewer.setLabelProvider(labelProvider);
-		viewer.setData("id", id); //$NON-NLS-1$
-		createPopupMenu(viewer);
-		addDNDSupport(viewer);
-		return viewer;
-	}
-
-	private void fillPopupMenu(IMenuManager manager, final TableViewer viewer) {
-		StructuredSelection ssel = (StructuredSelection) viewer.getSelection();
-		
-		manager.add(new Separator());
-		Action addSeparator = new Action(Messages.WelcomeCustomizationPreferencePage_addSeparator) {
-			public void run() {
-				doAddSeparator(viewer);
-			}
-		};
-		
-		manager.add(addSeparator);
-		manager.add(new Separator());
-
-		if (ssel.size() == 1 && viewer != available) {
-			Action upAction = new Action(Messages.WelcomeCustomizationPreferencePage_up) {
-
-				public void run() {
-					doMove(viewer, true);
-				}
-			};
-			Action downAction = new Action(Messages.WelcomeCustomizationPreferencePage_down) {
-
-				public void run() {
-					doMove(viewer, false);
-				}
-			};
-			BaseData ed = (BaseData) ssel.getFirstElement();
-			GroupData gd = (GroupData) viewer.getInput();
-			upAction.setEnabled(gd.canMoveUp(ed));
-			downAction.setEnabled(gd.canMoveDown(ed));
-			manager.add(upAction);
-			manager.add(downAction);
-		}
-		if (ssel.size() > 0) {
-			manager.add(new Separator());
-			MenuManager menu = new MenuManager(Messages.WelcomeCustomizationPreferencePage_moveTo);
-			addMoveToAction(menu, available, viewer,
-					Messages.WelcomeCustomizationPreferencePage_menu_available);
-			addMoveToAction(menu, topLeft, viewer, Messages.WelcomeCustomizationPreferencePage_menu_top_left);
-			addMoveToAction(menu, topRight, viewer, Messages.WelcomeCustomizationPreferencePage_menu_top_right);
-			addMoveToAction(menu, bottomLeft, viewer, Messages.WelcomeCustomizationPreferencePage_menu_bottom_left);
-			addMoveToAction(menu, bottomRight, viewer, Messages.WelcomeCustomizationPreferencePage_menu_bottom_right);
-			manager.add(menu);
-			
-			boolean addDeleteSeparator=false;
-			
-			for (Iterator iter=ssel.iterator(); iter.hasNext();) {
-				Object obj = iter.next();
-				if (obj instanceof SeparatorData)
-					addDeleteSeparator=true;
-				else {
-					addDeleteSeparator=false;
-					break;
-				}
-			}
-			if (addDeleteSeparator) {
-				Action deleteSeparator = new Action(Messages.WelcomeCustomizationPreferencePage_removeSeparator) {
-					public void run() {
-						doRemoveSeparators(viewer);
-					}
-				};
-				manager.add(deleteSeparator);
-			}
-		}
-	}
-
-	private void addMoveToAction(MenuManager menu, final TableViewer target, final TableViewer source,
-			String name) {
-		if (source == target)
-			return;
-		Action action = new Action(name) {
-
-			public void run() {
-				doMoveTo(source, target);
-			}
-		};
-		menu.add(action);
-	}
-
-	private void doMove(Viewer viewer, boolean up) {
-		Object obj = ((StructuredSelection) viewer.getSelection()).getFirstElement();
-		GroupData gd = (GroupData) viewer.getInput();
-		if (up)
-			gd.moveUp((BaseData) obj);
-		else
-			gd.moveDown((BaseData) obj);
-		viewer.refresh();
+	public void init(IWorkbench workbench) {
 	}
 	
-	private void doAddSeparator(Viewer viewer) {
-		Object obj = ((StructuredSelection) viewer.getSelection()).getFirstElement();
-		GroupData gd = (GroupData) viewer.getInput();
-		if (gd == null) {
-			gd = createTargetGd(viewer);
-			viewer.setInput(gd);
-		}
-		gd.addSeparator((BaseData)obj);
-		viewer.refresh();
-		updateColumnSizes((TableViewer)viewer);
-	}
-
-	private void doRemoveSeparators(Viewer viewer) {
-		StructuredSelection ssel = ((StructuredSelection) viewer.getSelection());
-		GroupData gd = (GroupData) viewer.getInput();
-		for (Iterator iter=ssel.iterator(); iter.hasNext();) {
-			SeparatorData sdata = (SeparatorData)iter.next();
-			gd.remove(sdata);
-		}
-		viewer.refresh();
-	}
-
-	private void doMoveTo(TableViewer source, TableViewer target) {
-		Object[] selObjs = ((StructuredSelection) source.getSelection()).toArray();
-		GroupData sourceGd = (GroupData) source.getInput();
-		GroupData targetGd = (GroupData) target.getInput();
-		if (targetGd == null) {
-			targetGd = createTargetGd(target);
-		}
-		for (int i = 0; i < selObjs.length; i++) {
-			BaseData ed = (BaseData) selObjs[i];
-			sourceGd.remove(ed);
-			targetGd.add(ed);
-		}
-		source.refresh();
-		updateColumnSizes(source);
-		if (target.getInput() != null)
-			target.refresh();
-		else
-			target.setInput(targetGd);
-		updateColumnSizes(target);
-	}
-
-	private void updateColumnSizes(TableViewer viewer) {
-		TableColumn sc = viewer.getTable().getColumn(1);
-		sc.pack();
-	}
-
-	private GroupData createTargetGd(Viewer target) {
-		GroupData targetGd = null;
-		if (target == topLeft)
-			targetGd = new GroupData(PageData.P_TOP_LEFT, false);
-		else if (target == topRight)
-			targetGd = new GroupData(PageData.P_TOP_RIGHT, false);
-		else if (target == bottomLeft)
-			targetGd = new GroupData(PageData.P_BOTTOM_LEFT, false);
-		else if (target == bottomRight)
-			targetGd = new GroupData(PageData.P_BOTTOM_RIGHT, false);
-		else if (target == available)
-			targetGd = new GroupData(IUniversalIntroConstants.HIDDEN, false);
-		else
-			return null;
-		TabItem[] items = tabFolder.getSelection();
-		PageData pd = (PageData) items[0].getData("pageData"); //$NON-NLS-1$
-		if (pd == null) {
-			String pageId = (String)items[0].getData();
-			pd = new PageData(pageId);
-			items[0].setData("pageData", pd); //$NON-NLS-1$
-			introRootPages.add(pageId);
-		}
-		pd.add(targetGd);
-		return targetGd;
-	}
-
 	public void setCurrentPage(String pageId) {
-		firstPageId = pageId;
-	}
-
-	private void selectFirstPage() {
-		if (firstPageId == null)
-			return;
-		TabItem[] items = tabFolder.getItems();
-		for (int i = 0; i < items.length; i++) {
-			TabItem item = items[i];
-			PageData pd = (PageData) item.getData("pageData"); //$NON-NLS-1$
-			if (pd != null && pd.getId().equals(firstPageId)) {
-				tabFolder.setSelection(i);
-				onTabChange(item);
-				return;
-			}
-		}
+		getContentsArea().setCurrentPage(pageId);
 	}
 }