/*******************************************************************************
* Copyright (c) 2005, 2007 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.intro.impl.model;
import java.io.StringReader;
import java.net.URL;
import java.util.HashSet;
import java.util.Set;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IProduct;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.help.search.ISearchIndex;
import org.eclipse.help.search.LuceneSearchParticipant;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.intro.impl.IntroPlugin;
import org.eclipse.ui.internal.intro.impl.model.loader.ExtensionPointManager;
import org.eclipse.ui.intro.IIntroManager;
import org.eclipse.ui.intro.IIntroPart;
import org.eclipse.ui.intro.config.IIntroURL;
import org.eclipse.ui.intro.config.IntroURLFactory;
import org.osgi.framework.Bundle;
/**
* An implementation of the Lucene search participant that adds Welcome content into the local help
* index so that it can be searched.
*
*/
public class IntroSearchParticipant extends LuceneSearchParticipant {
private IntroModelRoot model;
private class TitleAndSummary {
String title;
String summary;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.help.search.LuceneSearchParticipant#getContributingPlugins()
*/
public Set getContributingPlugins() {
IConfigurationElement[] elements = Platform.getExtensionRegistry().getConfigurationElementsFor(
"org.eclipse.ui.intro.config"); //$NON-NLS-1$
HashSet set = new HashSet();
for (int i = 0; i < elements.length; i++) {
IConfigurationElement element = elements[i];
if (!element.getName().equals("config")) //$NON-NLS-1$
continue;
set.add(element.getContributor().getName());
}
elements = Platform.getExtensionRegistry().getConfigurationElementsFor(
"org.eclipse.ui.intro.configExtension"); //$NON-NLS-1$
for (int i = 0; i < elements.length; i++) {
IConfigurationElement element = elements[i];
if (!element.getName().equals("configExtension")) //$NON-NLS-1$
continue;
set.add(element.getContributor().getName());
}
return set;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.help.search.LuceneSearchParticipant#getAllDocuments(java.lang.String)
*/
public Set getAllDocuments(String locale) {
HashSet set = new HashSet();
IProduct product = Platform.getProduct();
if (product == null) {
return set;
}
String productId = product.getId();
IConfigurationElement[] elements = Platform.getExtensionRegistry().getConfigurationElementsFor(
"org.eclipse.ui.intro"); //$NON-NLS-1$
String targetIntroId = null;
for (int i = 0; i < elements.length; i++) {
IConfigurationElement element = elements[i];
if (element.getName().equals("introProductBinding")) { //$NON-NLS-1$
String pid = element.getAttribute("productId"); //$NON-NLS-1$
String iid = element.getAttribute("introId"); //$NON-NLS-1$
if (productId.equals(pid)) {
targetIntroId = iid;
break;
}
}
}
if (targetIntroId == null)
return set;
elements = Platform.getExtensionRegistry().getConfigurationElementsFor("org.eclipse.ui.intro.config"); //$NON-NLS-1$
IConfigurationElement config = null;
for (int i = 0; i < elements.length; i++) {
IConfigurationElement element = elements[i];
if (element.getName().equals("config")) { //$NON-NLS-1$
String iid = element.getAttribute("introId"); //$NON-NLS-1$
if (targetIntroId.equals(iid)) {
config = element;
break;
}
}
}
if (config == null)
return set;
String configId = config.getAttribute("id"); //$NON-NLS-1$
ExtensionPointManager extensionPointManager = IntroPlugin.getDefault().getExtensionPointManager();
model = extensionPointManager.getModel(configId);
if (model != null && model.hasValidConfig())
loadFromModel(model, set, locale);
return set;
}
private void loadFromModel(IntroModelRoot model, HashSet set, String locale) {
IntroPage[] pages = model.getPages();
for (int i = 0; i < pages.length; i++) {
IntroPage page = pages[i];
Bundle bundle = page.getBundle();
String bundleId = bundle.getSymbolicName();
String content = page.getRawContent();
String pageId = page.getId();
String href;
if (content != null)
href = resolveVariables(bundleId, content, locale);
else
href = pageId;
set.add("/" + bundleId + "/" + href + "?id=" + pageId); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.help.search.LuceneSearchParticipant#addDocument(java.lang.String,
* java.lang.String, java.net.URL, java.lang.String, java.lang.String,
* org.apache.lucene.document.Document)
*/
public IStatus addDocument(ISearchIndex index, String pluginId, String name, URL url, String id,
Document doc) {
if (model == null)
return Status.CANCEL_STATUS;
IntroPage page = getPage(id);
if (page == null)
return Status.CANCEL_STATUS;
return addPage(index, pluginId, name, url, page, doc);
}
private IntroPage getPage(String id) {
IntroPage[] pages = model.getPages();
for (int i = 0; i < pages.length; i++) {
if (pages[i].getId().equals(id))
return pages[i];
}
return null;
}
private IStatus addPage(ISearchIndex index, String pluginId, String name, URL url, IntroPage page,
Document doc) {
AbstractIntroElement[] children = page.getChildren();
if (children.length > 0) {
StringBuffer buf = new StringBuffer();
TitleAndSummary titleSummary = new TitleAndSummary();
addChildren(children, buf, doc, titleSummary);
String contents = buf.toString();
if (titleSummary.title != null) {
addTitle(titleSummary.title, doc);
}
if (titleSummary.summary != null) {
doc.add(new Field("summary", titleSummary.summary, Field.Store.YES, Field.Index.NO)); //$NON-NLS-1$
}
doc.add(new Field("contents", new StringReader(contents))); //$NON-NLS-1$
doc.add(new Field("exact_contents", new StringReader(contents))); //$NON-NLS-1$
return Status.OK_STATUS;
}
// delegate to the help system
return index.addDocument(pluginId, name, url, page.getId(), doc);
}
private void addChildren(AbstractIntroElement[] children, StringBuffer buf, Document doc, TitleAndSummary titleSummary) {
for (int i = 0; i < children.length; i++) {
AbstractIntroElement child = children[i];
if (child instanceof IntroLink) {
String text = ((IntroLink)child).getLabel();
appendNewText(buf, text);
} else if (child instanceof IntroText) {
IntroText childIntroText = (IntroText) child;
appendNewText(buf, childIntroText.getText());
String childId = childIntroText.getId();
String title = null;
if ("page-title".equals(childId)) { //$NON-NLS-1$
title = childIntroText.getText();
} else if (child instanceof IntroPageTitle) {
title = ((IntroPageTitle) child).getTitle();
}
if (title != null) {
titleSummary.title = title;
}
if ("page-description".equals(childId)) { //$NON-NLS-1$
titleSummary.summary = childIntroText.getText();
}
}
if (child instanceof AbstractIntroContainer) {
AbstractIntroContainer container = (AbstractIntroContainer) child;
if (!"navigation-links".equals(container.getId())) { //$NON-NLS-1$
AbstractIntroElement[] cc = container.getChildren();
addChildren(cc, buf, doc, titleSummary);
}
}
}
}
private void appendNewText(StringBuffer buf, String text) {
if (text == null) return;
if (buf.length() > 0)
buf.append(" "); //$NON-NLS-1$
buf.append(text);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.help.search.LuceneSearchParticipant#clear()
*/
public void clear() {
model = null;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.help.search.LuceneSearchParticipant#open(java.lang.String)
*/
public boolean open(String id) {
IIntroManager introManager = PlatformUI.getWorkbench().getIntroManager();
IIntroPart intro = introManager
.showIntro(PlatformUI.getWorkbench().getActiveWorkbenchWindow(), false);
if (intro == null)
return false;
IIntroURL url = IntroURLFactory.createIntroURL("http://org.eclipse.ui.intro/showPage?id=" + id); //$NON-NLS-1$
return url.execute();
}
}