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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.help.internal.webapp.data;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.core.runtime.Platform;
import org.eclipse.help.internal.HelpPlugin;
import org.eclipse.help.internal.index.IIndex;
import org.eclipse.help.internal.index.IIndexEntry;
import org.eclipse.help.internal.index.IIndexTopic;
/**
* Helper class for searchView.jsp initialization
*/
public class IndexData extends ActivitiesData {
private IIndex index;
//Temporary storage for index generation
int entryIndex;
Writer out;
String indent;
StringWriter funcOut;
/**
* Constructs the data for the index page.
* @param context
* @param request
*/
public IndexData(
ServletContext context,
HttpServletRequest request,
HttpServletResponse response) {
super(context, request, response);
loadIndex();
}
/**
* Loads help index
*/
private void loadIndex() {
this.index = HelpPlugin.getIndexManager().getIndex(Platform.getNL());
}
public void generateHrefs(Writer out) throws IOException{
out.write(funcOut.toString());
}
public void generateIndex(Writer out, String indent) throws IOException{
this.out = out;
this.entryIndex = 0;
this.indent = indent;
this.funcOut = new StringWriter();
Iterator iter = index.getEntries().values().iterator();
while(iter.hasNext()) {
IIndexEntry entry = (IIndexEntry) iter.next();
generateIndexEntry(entry, 0, "");
}
}
private void generateIndexEntry( IIndexEntry entry, int depth, String parent) throws IOException{
List topics = entry.getTopics();
int size = topics.size();
String label = UrlUtil.htmlEncode(entry.getKeyword());
if(size == 1) {
IIndexTopic topic = (IIndexTopic) topics.get(0);
String href = UrlUtil.getHelpURL(topic.getHref());
funcOut.write("case " + entryIndex + ": openTopic(\"" + href + "\"); break;\n");
}
else if (size == 0) {
funcOut.write("case " + entryIndex + ": alertEmpty(); break;\n");
}
out.write("<option value='"+ UrlUtil.htmlEncode(parent + label)+"'>");
for(int i=0; i<depth; i++) out.write(indent);
out.write(UrlUtil.htmlEncode(label) + "</option>");
entryIndex++;
Iterator iter = entry.getEntries().values().iterator();
if(iter.hasNext()) {
do {
IIndexEntry childEntry = (IIndexEntry) iter.next();
generateIndexEntry(childEntry, depth+1, parent+label+",");
} while(iter.hasNext());
}
}
public IIndexEntry getIndexEntry(String [] path) {
Map entries = index.getEntries();
IIndexEntry result = null;
for(int i = 0; i < path.length; i++) {
result = (IIndexEntry) entries.get(path[i]);
if(result == null)
return null;
else
entries = result.getEntries();
}
return result;
}
}
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