/*
BEGIN LICENSE BLOCK
Copyright 2010-2011, Heiko Mueller, Sam Lindley, James Cheney and
University of Edinburgh
This file is part of Database Wiki.
Database Wiki is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Database Wiki is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Database Wiki. If not, see <http://www.gnu.org/licenses/>.
END LICENSE BLOCK
*/
package org.dbwiki.web.ui.printer.index;
import org.dbwiki.data.index.ContentIterator;
import org.dbwiki.data.index.DatabaseContent;
import org.dbwiki.data.index.DatabaseEntry;
import org.dbwiki.data.resource.DatabaseIdentifier;
import org.dbwiki.web.html.HtmlLinePrinter;
import org.dbwiki.web.request.WikiRequest;
import org.dbwiki.web.request.parameter.RequestParameter;
import org.dbwiki.web.request.parameter.RequestParameterVersion;
import org.dbwiki.web.ui.CSS;
/** Print a partial index , listing a fixed number per page with pager links
*
* @author jcheney
*
*/
public class PartialIndexPrinter extends IndexContentPrinter {
/*
* Private Constants
*/
private int _entriesPerPage = 50;
/*
* Constructors
*/
public PartialIndexPrinter(WikiRequest request, DatabaseContent content, int entriesPerPage) {
super(request, content);
_entriesPerPage = entriesPerPage;
}
public PartialIndexPrinter(WikiRequest request, DatabaseContent content) {
super(request, content);
}
/*
* Public Methods
*/
public void listContent(DatabaseIdentifier databaseIdentifier, ContentIterator iterator, WikiRequest request, HtmlLinePrinter body) throws org.dbwiki.exception.WikiException {
int maxOutputCount = _entriesPerPage;
int outputCount = 0;
int readCount = 0;
int startIndex = 1;
if (request.parameters().hasParameter(RequestParameter.ParameterIndexPosition)) {
try {
startIndex = Integer.parseInt(request.parameters().get(RequestParameter.ParameterIndexPosition).value());
} catch (Exception e) {
}
}
RequestParameterVersion versionParameter = RequestParameter.versionParameter(request.parameters().get(RequestParameter.ParameterVersion));
body.add("<ul CLASS=\"" + CSS.CSSIndexContent + "\">");
DatabaseEntry entry = null;
while ((entry = iterator.next()) != null) {
readCount++;
if (readCount >= startIndex) {
body.add("<li>" + databaseIdentifier.getLink(entry, versionParameter) + "</li>");
outputCount++;
}
if (outputCount == maxOutputCount) {
break;
}
}
body.add("</ul>");
RequestParameter parameterVersion = request.parameters().get(RequestParameter.ParameterVersion);
if (outputCount > 0) {
String navigationLine = "";
if (startIndex > 1) {
navigationLine = "<a CLASS=\"" + CSS.CSSIndexNavbar + "\" HREF=\"" + databaseIdentifier.databaseHomepage() + "?" + RequestParameter.ParameterIndexPosition + "=" + Math.max(1, (startIndex - _entriesPerPage));
if (parameterVersion != null) {
navigationLine = navigationLine + "&" + parameterVersion.toURLString();
}
navigationLine = navigationLine + "\"><< prev </a>";
}
navigationLine = navigationLine + "[" + startIndex + "-" + (startIndex + outputCount - 1) + "]";
if (iterator.next() != null) {
navigationLine = navigationLine + "<a CLASS=\"" + CSS.CSSIndexNavbar + "\" HREF=\"" + databaseIdentifier.databaseHomepage() + "?" + RequestParameter.ParameterIndexPosition + "=" + (startIndex + outputCount);
if (parameterVersion != null) {
navigationLine = navigationLine + "&" + parameterVersion.toURLString();
}
navigationLine = navigationLine + "\"> next >></a>";
}
body.add("<p CLASS=\"" + CSS.CSSIndexNavbar + "\">" + navigationLine + "</p>");
}
}
}