10087 [Help] Missing Help Index Solution

9 files changed, 489 insertions, 4 deletions

diff --git a/org.eclipse.help.ui/icons/etool16/index_co.gif b/org.eclipse.help.ui/icons/etool16/index_co.gif
new file mode 100644
index 000000000..6645b64a9
--- /dev/null
+++ b/org.eclipse.help.ui/icons/etool16/index_co.gif
diff --git a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/IHelpUIConstants.java b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/IHelpUIConstants.java
index 4123dc4e7..c47dab65b 100644
--- a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/IHelpUIConstants.java
+++ b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/IHelpUIConstants.java
@@ -35,6 +35,7 @@ public interface IHelpUIConstants {
 	public static final String IMAGE_HELP_SEARCH = "etool16/helpsearch_co.gif"; //$NON-NLS-1$
 	public static final String IMAGE_RELATED_TOPICS = "etool16/reltopics_co.gif"; //$NON-NLS-1$
 	public static final String IMAGE_ALL_TOPICS = "etool16/alltopics_co.gif"; //$NON-NLS-1$	
+	public static final String IMAGE_INDEX = "etool16/index_co.gif"; //$NON-NLS-1$
 	public static final String IMAGE_HELP = "etool16/help.gif"; //$NON-NLS-1$
 	public static final String IMAGE_DHELP = "view16/help_view.gif"; //$NON-NLS-1$
 	public static final String IMAGE_NW = "elcl16/openseparate_co.gif"; //$NON-NLS-1$
@@ -65,6 +66,10 @@ public interface IHelpUIConstants {
 	public static final String HV_RELATED_TOPICS = "related-topics"; //$NON-NLS-1$
 	public static final String HV_CONTEXT_HELP_PAGE = "context-help-page"; //$NON-NLS-1$
 
+	public static final String HV_INDEX = "index"; //$NON-NLS-1$
+	public static final String HV_INDEX_TYPEIN = "index-typein"; //$NON-NLS-1$
+	public static final String HV_INDEX_PAGE = "index-page"; //$NON-NLS-1$
+
 	static final String ENGINE_EXP_ID = "org.eclipse.help.ui.searchEngine"; //$NON-NLS-1$
 	static final String TAG_ENGINE = "engine"; //$NON-NLS-1$
 	static final String ATT_ID = "id"; //$NON-NLS-1$
diff --git a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/Messages.java b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/Messages.java
index b09d9a38f..05979e366 100644
--- a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/Messages.java
+++ b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/Messages.java
@@ -59,6 +59,7 @@ public final class Messages extends NLS {
 	public static String ReusableHelpPart_copyAction_label;
 	public static String ReusableHelpPart_bookmarkAction_label;
 	public static String ReusableHelpPart_status;
+	public static String ReusableHelpPart_indexPage_name;
 	public static String HelpView_defaultText;
 	public static String expression;
 	public static String expression_label;
@@ -68,6 +69,7 @@ public final class Messages extends NLS {
 	public static String SeeAlsoPart_goto;
 	public static String SeeAlsoPart_contextHelp;
 	public static String SeeAlsoPart_bookmarks;
+	public static String SeeAlsoPart_index;
 	public static String ContextHelpPart_about;
 	public static String ContextHelpPart_aboutP;
 	public static String ContextHelpPart_dynamicHelp;
@@ -179,4 +181,6 @@ public final class Messages extends NLS {
 	public static String ReusableHelpPart_internalWebBrowserError;
 	public static String ScopeSet_errorLoading;
 	public static String ScopeSet_errorSaving;
-}
\ No newline at end of file
+	public static String IndexInstructions;
+	public static String IndexButton;
+}
diff --git a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/Messages.properties b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/Messages.properties
index 41141c731..3e05293a3 100644
--- a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/Messages.properties
+++ b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/Messages.properties
@@ -75,6 +75,7 @@ ReusableHelpPart_closeAction_tooltip=Close
 ReusableHelpPart_bookmarkAction_label=&Add Bookmark
 ReusableHelpPart_internalBrowserTitle=Help
 ReusableHelpPart_status = {0} - {1}
+ReusableHelpPart_indexPage_name=Index
 
 HelpView_defaultText=Click on any workbench part to show related help topics.
 
@@ -87,6 +88,7 @@ SeeAlsoPart_allTopics=All Topics
 SeeAlsoPart_goto=Go To:
 SeeAlsoPart_contextHelp=Related Topics
 SeeAlsoPart_bookmarks = Bookmarks
+SeeAlsoPart_index = Index
 ContextHelpPart_about=About
 ContextHelpPart_aboutP=About {0}
 ContextHelpPart_dynamicHelp=Search for other related topics
@@ -201,3 +203,6 @@ DefaultHelpUI_wtitle = Help
 DefaultHelpUI_noPerspMessage =This operation requires at least one open perspective.
 
 ContextHelpDialog_showInDynamicHelp = Open in dynamic help 
+
+IndexInstructions = Typein the word to find:
+IndexButton = Display
diff --git a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/HelpView.java b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/HelpView.java
index a5393d659..fa2b8803d 100644
--- a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/HelpView.java
+++ b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/HelpView.java
@@ -359,8 +359,7 @@ public class HelpView extends ViewPart implements IPartListener2,
 	 * @see org.eclipse.help.ui.internal.views.BaseHelpView#getHelpPartStyle()
 	 */
 	protected int getHelpPartStyle() {
-		return ReusableHelpPart.ALL_TOPICS | ReusableHelpPart.CONTEXT_HELP
-				| ReusableHelpPart.SEARCH | ReusableHelpPart.BOOKMARKS;
+		return ReusableHelpPart.getDefaultStyle();
 	}
 
 	public void setFocus() {
diff --git a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/IndexPart.java b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/IndexPart.java
new file mode 100644
index 000000000..ed7ae4c14
--- /dev/null
+++ b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/IndexPart.java
@@ -0,0 +1,134 @@
+/*******************************************************************************
+ * Copyright (c) 2006 Intel 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:
+ *     Intel Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.help.ui.internal.views;
+
+import org.eclipse.help.HelpSystem;
+import org.eclipse.help.IHelpResource;
+import org.eclipse.help.IIndexEntry;
+import org.eclipse.help.ui.internal.IHelpUIConstants;
+import org.eclipse.jface.action.IToolBarManager;
+import org.eclipse.jface.viewers.ITreeContentProvider;
+import org.eclipse.jface.viewers.LabelProvider;
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Tree;
+import org.eclipse.ui.IMemento;
+import org.eclipse.ui.forms.widgets.FormToolkit;
+
+public class IndexPart extends HyperlinkTreePart implements IHelpUIConstants {
+
+	class IndexProvider implements ITreeContentProvider {
+		public Object[] getChildren(Object parentElement) {
+			if (parentElement == IndexPart.this) {
+				return HelpSystem.getIndex().getEntries();
+			}
+			if (parentElement instanceof IIndexEntry) {
+				return IndexPart.this.getChildren((IIndexEntry) parentElement);
+			}
+			return new Object[0];
+		}
+
+		public Object getParent(Object element) {
+			return null;
+		}
+
+		public boolean hasChildren(Object element) {
+			return getChildren(element).length > 0;
+		}
+
+		public Object[] getElements(Object inputElement) {
+			return getChildren(inputElement);
+		}
+
+		public void dispose() {}
+		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {}
+	}
+
+	class IndexLabelProvider extends LabelProvider {
+		public String getText(Object obj) {
+			if (obj instanceof IIndexEntry)
+				return ((IIndexEntry) obj).getKeyword();
+			if (obj instanceof IHelpResource)
+				return ((IHelpResource) obj).getLabel();
+			return super.getText(obj);
+		}
+
+		public Image getImage(Object obj) {
+			return super.getImage(obj);
+		}
+	}
+
+	public IndexPart(Composite parent, FormToolkit toolkit, IToolBarManager tbm) {
+		super(parent, toolkit, tbm);
+	}
+
+	protected void configureTreeViewer() {
+		treeViewer.setContentProvider(new IndexProvider());
+		treeViewer.setLabelProvider(new IndexLabelProvider());
+	}
+
+	protected void doOpen(Object obj) {
+		if (obj instanceof IHelpResource) {
+			parent.showURL(((IHelpResource) obj).getHref());
+		} else if (obj instanceof IIndexEntry) {
+			IIndexEntry entry = (IIndexEntry) obj;
+			if (getChildren(entry).length > 0) {
+				treeViewer.setExpandedState(obj, !treeViewer.getExpandedState(obj));
+			}
+			IHelpResource[] topics = entry.getTopics();
+			if (topics.length == 1) {
+				parent.showURL(topics[0].getHref());
+			}
+		}
+	}
+
+	protected boolean canAddBookmarks() {
+		return true;
+	}
+
+	public void saveState(IMemento memento) {
+	}
+
+	public void toggleRoleFilter() {
+	}
+
+	public void refilter() {
+	}
+
+	private Object[] getChildren(IIndexEntry entry) {
+		/*
+		 * Index entry has two types of children: topics and subentries.
+		 * 
+		 * The method returns topics among children only if number of the topics
+		 * more than 1.
+		 * 
+		 * In case when the entry owns only one topic, this topic is not returned
+		 * as child because the entry will represent this topic by its keyword.
+		 */
+		IHelpResource[] topics = entry.getTopics();
+		IIndexEntry[] subentries = entry.getSubentries();
+
+		if (topics.length <= 1) {
+			return subentries;
+		}
+
+		Object[] childrens = new Object[topics.length + subentries.length];
+		System.arraycopy(topics, 0, childrens, 0, topics.length);
+		System.arraycopy(subentries, 0, childrens, topics.length, subentries.length);
+
+		return childrens; 
+	}
+
+	protected Tree getTreeWidget() {
+		return treeViewer.getTree();
+	}
+}
diff --git a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/IndexTypeinPart.java b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/IndexTypeinPart.java
new file mode 100644
index 000000000..edf4c1a22
--- /dev/null
+++ b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/IndexTypeinPart.java
@@ -0,0 +1,304 @@
+/*******************************************************************************
+ * Copyright (c) 2006 Intel 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:
+ *     Intel Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.help.ui.internal.views;
+
+import org.eclipse.help.ui.internal.IHelpUIConstants;
+import org.eclipse.help.ui.internal.Messages;
+import org.eclipse.jface.action.IAction;
+import org.eclipse.jface.action.IMenuManager;
+import org.eclipse.jface.action.IToolBarManager;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.KeyEvent;
+import org.eclipse.swt.events.KeyListener;
+import org.eclipse.swt.events.ModifyEvent;
+import org.eclipse.swt.events.ModifyListener;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Text;
+import org.eclipse.swt.widgets.Tree;
+import org.eclipse.swt.widgets.TreeItem;
+import org.eclipse.ui.IMemento;
+import org.eclipse.ui.forms.AbstractFormPart;
+import org.eclipse.ui.forms.widgets.FormText;
+import org.eclipse.ui.forms.widgets.FormToolkit;
+import org.eclipse.ui.forms.widgets.TableWrapData;
+import org.eclipse.ui.forms.widgets.TableWrapLayout;
+
+
+public class IndexTypeinPart extends AbstractFormPart implements IHelpPart, IHelpUIConstants {
+	private ReusableHelpPart parent;
+	String id;
+	private Composite container;
+	private FormText indexInstructions;
+	private Text indexText;
+	private Button indexButton;
+	private IndexPart indexPart;
+	private Tree indexTree;
+	private int itemCount;
+	private String[] rootItems;
+	private int currentIndex;
+
+	public IndexTypeinPart(Composite parent, FormToolkit toolkit, IToolBarManager tbm) {
+		container = toolkit.createComposite(parent);
+
+		TableWrapLayout layout = new TableWrapLayout();
+		layout.numColumns = 2;
+		container.setLayout(layout);
+
+		// Instructions
+		indexInstructions = toolkit.createFormText(container, false);
+		indexInstructions.setText(Messages.IndexInstructions, false, false);
+		TableWrapData td = new TableWrapData();
+		td.colspan = 2;
+		indexInstructions.setLayoutData(td);
+
+		// Index typein
+		indexText = toolkit.createText(container, null);
+		td = new TableWrapData(TableWrapData.FILL_GRAB);
+		td.maxWidth = 100;
+		td.valign = TableWrapData.MIDDLE;
+		indexText.setLayoutData(td);
+		indexButton = toolkit.createButton(container, Messages.IndexButton, SWT.PUSH);
+		indexButton.setEnabled(false);
+
+		indexText.addModifyListener(new ModifyListener() {
+			public void modifyText(ModifyEvent e) {
+				indexButton.setEnabled(indexText.getText().length() > 0);//!!!
+				doNavigate(indexText.getText());
+			}});
+		indexText.addKeyListener(new KeyListener() {
+			public void keyReleased(KeyEvent e) {
+				if (e.character == '\r' && indexButton.isEnabled()) {
+						doOpen();
+				}
+			}
+			public void keyPressed(KeyEvent e) {
+				if (e.keyCode == SWT.ARROW_UP) {
+					e.doit = false;
+					doUp();
+				} else if (e.keyCode == SWT.ARROW_DOWN) {
+					e.doit = false;
+					doDown();
+				}
+			}});
+		indexButton.addSelectionListener(new SelectionAdapter() {
+			public void widgetSelected(SelectionEvent e) {
+				doOpen();
+			}});
+
+		toolkit.paintBordersFor(container);
+
+		currentIndex = -1;
+	}
+
+	protected void doUp() {
+		checkTree();
+		if (indexTree == null) return;
+
+		int index = 0;
+		TreeItem[] items = indexTree.getSelection();
+		if (items.length > 0) {
+			index = indexTree.indexOf(items[0]) - 1;
+			if (index < 0) {
+				return;
+			}
+		}
+		TreeItem item = indexTree.getItem(index); 
+		indexTree.setSelection(new TreeItem[] { item });
+		String text = item.getText();
+		indexText.setText(text);
+		indexText.setSelection(0, text.length());
+	}
+
+	protected void doDown() {
+		checkTree();
+		if (indexTree == null) return;
+
+		int index = 0;
+		TreeItem[] items = indexTree.getSelection();
+		if (items.length > 0) {
+			index = indexTree.indexOf(items[0]) + 1;
+			if (index >= indexTree.getItemCount()) {
+				return;
+			}
+		}
+		TreeItem item = indexTree.getItem(index); 
+		indexTree.setSelection(new TreeItem[] { item });
+		String text = item.getText();
+		indexText.setText(text);
+		indexText.setSelection(0, text.length());
+	}
+
+	protected void doNavigate(String text) {
+		checkTree();
+		if (rootItems == null) return;
+
+		int index = searchPattern(text);
+		if (index != -1 && index != currentIndex) {
+			indexTree.setSelection(new TreeItem[] { indexTree.getItem(index) });
+			currentIndex = index;
+		}
+	}
+
+	private void checkTree() {
+		if (rootItems != null) return;
+
+		indexPart = (IndexPart)parent.findPart(HV_INDEX);
+		if (indexPart == null) return;
+
+		indexTree = indexPart.getTreeWidget();
+		if (indexTree == null) return;
+
+		itemCount = indexTree.getItemCount();
+		if (itemCount == 0) {
+			indexTree = null;
+		} else {
+			rootItems = new String[itemCount];
+			for (int i = 0; i < itemCount; i++) {
+				rootItems[i] = indexTree.getItem(i).getText();
+			}
+		}
+	}
+
+	/*
+	 * TODO optimize
+	 */
+	private int searchPattern(String pattern) {
+		int from = 0;
+		int to = rootItems.length;
+		int i;
+		int res;
+
+		while (to > from) {
+			i = (to + from) / 2;
+			res = compare(rootItems[i], pattern);
+			if (res == 0) {
+				while (i > 0) {
+					if (compare(rootItems[--i], pattern) != 0) {
+						i++;
+						break;
+					}
+				}
+				return i;
+			}
+
+			if (res < 0) {
+				from = i + 1;
+			} else {
+				to = i;
+			}
+		}
+
+		return -1;
+	}
+
+	/*
+	 * TODO optimize
+	 */
+	int compare(String keyword, String pattern) {
+		int kI = 0, pI = 0;
+		char kCh, pCh;
+
+		while (kI < keyword.length() && pI < pattern.length()) {
+			kCh = Character.toLowerCase(keyword.charAt(kI));
+			pCh = Character.toLowerCase(pattern.charAt(pI));
+			if (kCh > pCh) {
+				return 1;
+			} else if (kCh < pCh) {
+				return -1;
+			}
+			kI++;
+			pI++;
+		}
+		if (keyword.length() >= pattern.length()) {
+			return 0;
+		} else {
+			return -1;
+		}
+	}
+
+	protected void doOpen() {
+		checkTree();
+		if (indexTree == null) return;
+
+		TreeItem items[] = indexTree.getSelection();
+		if (items.length == 0) return;
+
+		Object obj = items[0].getData();
+		if (obj != null) {
+			indexPart.doOpen(obj);
+		}
+	}
+
+	public void init(ReusableHelpPart parent, String id, IMemento memento) {
+		// TODO Auto-generated method stub
+		this.parent = parent;
+		this.id = id;
+	}
+
+	public void saveState(IMemento memento) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public Control getControl() {
+		return container;
+	}
+
+	public String getId() {
+		return id;
+	}
+
+	public void setVisible(boolean visible) {
+		getControl().setVisible(visible);
+	}
+
+	public boolean hasFocusControl(Control control) {
+		// TODO Auto-generated method stub
+		return false;
+	}
+
+	public boolean fillContextMenu(IMenuManager manager) {
+		// TODO Auto-generated method stub
+		return false;
+	}
+
+	public IAction getGlobalAction(String id) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	public void stop() {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void toggleRoleFilter() {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void refilter() {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void setFocus() {
+		indexText.setFocus();
+	}
+
+	public Text getTextWidget() {
+		return indexText;
+	}
+}
diff --git a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/ReusableHelpPart.java b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/ReusableHelpPart.java
index 6b6190e46..0e4cad7ad 100644
--- a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/ReusableHelpPart.java
+++ b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/ReusableHelpPart.java
@@ -30,6 +30,7 @@ import org.eclipse.help.IHelpResource;
 import org.eclipse.help.IToc;
 import org.eclipse.help.ITopic;
 import org.eclipse.help.UAContentFilter;
+import org.eclipse.help.internal.HelpPlugin;
 import org.eclipse.help.internal.base.BaseHelpSystem;
 import org.eclipse.help.internal.base.HelpBasePlugin;
 import org.eclipse.help.internal.base.IHelpBaseConstants;
@@ -105,6 +106,8 @@ public class ReusableHelpPart implements IHelpUIConstants,
 
 	public static final int BOOKMARKS = 1 << 4;
 
+	public static final int INDEX = 1 << 5;
+
 	public static final Collator SHARED_COLLATOR = Collator.getInstance();
 
 	private static final String PROMPT_KEY = "askShowAll"; //$NON-NLS-1$
@@ -631,7 +634,7 @@ public class ReusableHelpPart implements IHelpUIConstants,
 	}
 
 	public ReusableHelpPart(IRunnableContext runnableContext) {
-		this(runnableContext, CONTEXT_HELP | SEARCH | ALL_TOPICS | BOOKMARKS);
+		this(runnableContext, getDefaultStyle());
 	}
 
 	public ReusableHelpPart(IRunnableContext runnableContext, int style) {
@@ -736,6 +739,16 @@ public class ReusableHelpPart implements IHelpUIConstants,
 		page.addPart(HV_RELATED_TOPICS, true);
 		page.addPart(HV_SEE_ALSO, false);
 		pages.add(page);
+
+		// index page
+		page = new HelpPartPage(HV_INDEX_PAGE,
+				Messages.ReusableHelpPart_indexPage_name,
+				IHelpUIConstants.IMAGE_INDEX); 
+		page.setVerticalSpacing(0);
+		page.addPart(HV_INDEX_TYPEIN, false);
+		page.addPart(HV_INDEX, true);
+		page.addPart(HV_SEE_ALSO, false);
+		pages.add(page);
 	}
 
 	public void init(IActionBars bars, IToolBarManager toolBarManager,
@@ -1080,6 +1093,10 @@ public class ReusableHelpPart implements IHelpUIConstants,
 			part = new SearchPart(parent, mform.getToolkit());
 		} else if (id.equals(HV_BOOKMARKS_TREE)) {
 			part = new BookmarksPart(parent, mform.getToolkit(), tbm);
+		} else if (id.equals(HV_INDEX)) {
+			part = new IndexPart(parent, mform.getToolkit(), tbm);
+		} else if (id.equals(HV_INDEX_TYPEIN)) {
+			part = new IndexTypeinPart(parent, mform.getToolkit(), tbm);
 		}
 		if (part != null) {
 			mform.addPart(part);			
@@ -1240,6 +1257,9 @@ public class ReusableHelpPart implements IHelpUIConstants,
 	private void contributeToDropDownMenu(IMenuManager manager) {
 		addPageAction(manager, IHelpUIConstants.HV_CONTEXT_HELP_PAGE);
 		addPageAction(manager, IHelpUIConstants.HV_ALL_TOPICS_PAGE);
+		if (HelpPlugin.getIndexManager().isIndexContributed()) {
+			addPageAction(manager, IHelpUIConstants.HV_INDEX_PAGE);
+		}
 		addPageAction(manager, IHelpUIConstants.HV_FSEARCH_PAGE);
 		addPageAction(manager, IHelpUIConstants.HV_BOOKMARKS_PAGE);
 	}
@@ -1638,5 +1658,14 @@ public class ReusableHelpPart implements IHelpUIConstants,
 		}
 		return engineManager;
 	}
+
+	static public int getDefaultStyle() {
+		int style = ALL_TOPICS | CONTEXT_HELP | SEARCH | BOOKMARKS;
+
+		if (HelpPlugin.getIndexManager().isIndexContributed())
+			style |= INDEX;
+
+		return style; 
+	}
 }
 
diff --git a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/SeeAlsoPart.java b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/SeeAlsoPart.java
index 40d8ee037..54afe94a5 100644
--- a/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/SeeAlsoPart.java
+++ b/org.eclipse.help.ui/src/org/eclipse/help/ui/internal/views/SeeAlsoPart.java
@@ -114,6 +114,11 @@ public class SeeAlsoPart extends AbstractFormPart implements IHelpPart {
 				IHelpUIConstants.HV_BOOKMARKS_PAGE,
 				IHelpUIConstants.IMAGE_BOOKMARKS, listener);
 		}
+		if ((helpPart.getStyle() & ReusableHelpPart.INDEX) != 0) {
+			addPageLink(container, toolkit, Messages.SeeAlsoPart_index, 
+				IHelpUIConstants.HV_INDEX_PAGE,
+				IHelpUIConstants.IMAGE_INDEX, listener);
+		}
 	}
 
 	private void addPageLink(Composite container, FormToolkit toolkit, String text, String id,