/*
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;
/*
import java.util.Hashtable;
import java.util.Iterator;
*/
import java.util.Vector;
/*
import org.dbwiki.data.database.DatabaseAttributeNode;
import org.dbwiki.data.database.DatabaseElementNode;
import org.dbwiki.data.database.DatabaseGroupNode;
import org.dbwiki.data.database.DatabaseNode;
import org.dbwiki.data.database.DatabaseTextNode;
import org.dbwiki.data.time.TimeInterval;
import org.dbwiki.data.time.Timestamp;
import org.dbwiki.data.time.VersionIndex;
*/
import org.dbwiki.data.time.Version;
import org.dbwiki.user.User;
import org.dbwiki.web.html.HtmlLinePrinter;
import org.dbwiki.web.request.WikiDataRequest;
import org.dbwiki.web.request.parameter.RequestParameter;
import org.dbwiki.web.request.parameter.RequestParameterVersion;
import org.dbwiki.web.ui.CSS;
/** Prints out a version index as a form that can be used to visit past versions
*
* @author jcheney
*
*/
public class VersionIndexPrinter extends HtmlContentPrinter {
/*
* Private Variables
*/
private WikiDataRequest _request;
/*
* Constructors
*/
public VersionIndexPrinter(WikiDataRequest request) {
_request = request;
}
/*
* Public Methods
*/
public void print(HtmlLinePrinter body) throws org.dbwiki.exception.WikiException {
String url = _request.wri().getURL() + "?" + RequestParameter.ParameterVersion + "=";
if (_request.parameters().hasParameter(RequestParameter.ParameterChangesSince)) {
url = url + RequestParameterVersion.VersionChanges;
body.paragraph("Show changes since ...", CSS.CSSHeadline);
} else {
body.paragraph("Show previous version", CSS.CSSHeadline);
}
body.openTABLE(CSS.CSSList);
body.openTR();
body.openTH(CSS.CSSList);
body.text("Version");
body.closeTH();
body.openTH(CSS.CSSList);
body.text("User");
body.closeTH();
body.openTH(CSS.CSSList);
body.text("Action");
body.closeTH();
body.closeTR();
if (_request.isRootRequest()) {
this.printDatabaseVersionIndex(_request, url, body);
} else {
this.printNodeVersionIndex(_request, url, body);
}
body.closeTABLE();
}
/*
* Private Methods
*/
private void printDatabaseVersionIndex(WikiDataRequest request, String url, HtmlLinePrinter body) {
for (int iVersion = 0; iVersion < request.versionIndex().size(); iVersion++) {
Version version = request.versionIndex().get(iVersion);
this.printVersionLine(request, version, url, body);
}
}
private void printNodeVersionIndex(WikiDataRequest request, String url, HtmlLinePrinter body) throws org.dbwiki.exception.WikiException {
Vector<Version> versions = request.versionIndex().getNodeChanges(request.node());
for (int iVersion = 0; iVersion < versions.size(); iVersion++) {
Version version = versions.get(iVersion);
this.printVersionLine(request, version, url, body);
}
}
private void printVersionLine(WikiDataRequest request, Version version, String url, HtmlLinePrinter body) {
String target = url + version.number();
body.openTR();
body.openTD(CSS.CSSList);
body.link(target, version.name(), CSS.CSSList);
body.closeTD();
body.openTD(CSS.CSSList);
if (version.provenance().user() != null) {
body.text(version.provenance().user().fullName());
} else {
body.text(User.UnknownUserName);
}
body.closeTD();
body.openTD(CSS.CSSList);
if (version.provenance().identifier() != null) {
body.link(request.wri().databaseIdentifier().linkPrefix() + version.provenance().identifier().toURLString(), version.provenance().name(), CSS.CSSList);
} else {
body.text(version.provenance().name());
}
body.closeTD();
body.closeTR();
}
}