/*
Copyright 2008-2010 Gephi
Authors : Patick J. McSweeney <pjmcswee@syr.edu>,
Mathieu Bastian <mathieu.bastian@gephi.org>
Website : http://www.gephi.org
This file is part of Gephi.
Gephi is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
Gephi 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with Gephi. If not, see <http://www.gnu.org/licenses/>.
*/
package org.gephi.statistics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.imageio.ImageIO;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.apache.commons.codec.binary.Base64;
import org.gephi.statistics.spi.Statistics;
import org.gephi.statistics.api.StatisticsModel;
import org.gephi.statistics.spi.StatisticsBuilder;
import org.gephi.statistics.spi.StatisticsUI;
import org.gephi.utils.TempDirUtils;
import org.gephi.utils.TempDirUtils.TempDir;
import org.openide.util.Lookup;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
*
* @author Mathieu Bastian
* @author Patrick J. McSweeney
*/
public class StatisticsModelImpl implements StatisticsModel {
//Model
private final List<StatisticsUI> invisibleList;
private final List<Statistics> runningList;
private final Map<StatisticsUI, String> resultMap;
private final Map<Class, String> reportMap;
//Listeners
private final List<ChangeListener> listeners;
public StatisticsModelImpl() {
invisibleList = new ArrayList<StatisticsUI>();
runningList = Collections.synchronizedList(new ArrayList<Statistics>());
listeners = new ArrayList<ChangeListener>();
resultMap = new HashMap<StatisticsUI, String>();
reportMap = new HashMap<Class, String>();
}
public void addReport(Statistics statistics) {
reportMap.put(statistics.getClass(), statistics.getReport());
fireChangeEvent();
}
public void addResult(StatisticsUI ui) {
if (resultMap.containsKey(ui) && ui.getValue() == null) {
resultMap.remove(ui);
} else {
resultMap.put(ui, ui.getValue());
}
fireChangeEvent();
}
public String getReport(Class<? extends Statistics> statisticsClass) {
return reportMap.get(statisticsClass);
}
public String getResult(StatisticsUI statisticsUI) {
return resultMap.get(statisticsUI);
}
public boolean isStatisticsUIVisible(StatisticsUI statisticsUI) {
return !invisibleList.contains(statisticsUI);
}
public boolean isRunning(StatisticsUI statisticsUI) {
for (Statistics s : runningList.toArray(new Statistics[0])) {
if (statisticsUI.getStatisticsClass().equals(s.getClass())) {
return true;
}
}
return false;
}
public void setRunning(Statistics statistics, boolean running) {
if (!running) {
if (runningList.remove(statistics)) {
fireChangeEvent();
}
} else if (!runningList.contains(statistics)) {
runningList.add(statistics);
fireChangeEvent();
}
}
public Statistics getRunning(StatisticsUI statisticsUI) {
for (Statistics s : runningList.toArray(new Statistics[0])) {
if (statisticsUI.getStatisticsClass().equals(s)) {
return s;
}
}
return null;
}
public void setVisible(StatisticsUI statisticsUI, boolean visible) {
if (visible) {
if (invisibleList.remove(statisticsUI)) {
fireChangeEvent();
}
} else if (!invisibleList.contains(statisticsUI)) {
invisibleList.add(statisticsUI);
fireChangeEvent();
}
}
public void addChangeListener(ChangeListener changeListener) {
if (!listeners.contains(changeListener)) {
listeners.add(changeListener);
}
}
public void removeChangeListener(ChangeListener changeListener) {
listeners.remove(changeListener);
}
public void fireChangeEvent() {
ChangeEvent evt = new ChangeEvent(this);
for (ChangeListener listener : listeners) {
listener.stateChanged(evt);
}
}
public Element writeXML(Document document) {
Element modelE = document.createElement("statisticsmodel");
Element resultsE = document.createElement("results");
for (Map.Entry<StatisticsUI, String> entry : resultMap.entrySet()) {
if (entry.getValue() != null && !entry.getValue().isEmpty()) {
Element resultE = document.createElement("result");
resultE.setAttribute("class", entry.getKey().getClass().getName());
resultE.setAttribute("value", entry.getValue());
resultsE.appendChild(resultE);
}
}
modelE.appendChild(resultsE);
Element reportsE = document.createElement("reports");
for (Map.Entry<Class, String> entry : reportMap.entrySet()) {
if (entry.getValue() != null && !entry.getValue().isEmpty()) {
Element reportE = document.createElement("report");
String report = entry.getValue();
report = embedImages(report);
reportE.setAttribute("class", entry.getKey().getName());
reportE.setAttribute("value", report);
reportsE.appendChild(reportE);
}
}
modelE.appendChild(reportsE);
return modelE;
}
public void readXML(Element modelE) {
Element resultsE = getNextElementByTagName(modelE, "results");
if (resultsE != null) {
Collection<? extends StatisticsUI> uis = Lookup.getDefault().lookupAll(StatisticsUI.class);
for (Element resultE : getElementsByTagName(resultsE, "result")) {
String classStr = resultE.getAttribute("class");
StatisticsUI resultUI = null;
for (StatisticsUI ui : uis) {
if (ui.getClass().getName().equals(classStr)) {
resultUI = ui;
}
}
if (resultUI != null) {
String value = resultE.getAttribute("value");
resultMap.put(resultUI, value);
}
}
}
Element reportsE = getNextElementByTagName(modelE, "reports");
if (reportsE != null) {
Collection<? extends StatisticsBuilder> builders = Lookup.getDefault().lookupAll(StatisticsBuilder.class);
for (Element reportE : getElementsByTagName(reportsE, "report")) {
String classStr = reportE.getAttribute("class");
Class reportClass = null;
for (StatisticsBuilder builder : builders) {
if (builder.getStatisticsClass().getName().equals(classStr)) {
reportClass = builder.getStatisticsClass();
}
}
if (reportClass != null) {
String report = reportE.getAttribute("value");
report = unembedImages(report);
reportMap.put(reportClass, report);
}
}
}
}
private Element getNextElementByTagName(Element node, String name) {
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++) {
Node n = list.item(i);
if (n.getNodeType() == Node.ELEMENT_NODE && n.getNodeName().equalsIgnoreCase(name)) {
return (Element) n;
}
}
return null;
}
private Element[] getElementsByTagName(Element node, String name) {
NodeList list = node.getElementsByTagName(name);
Element[] res = new Element[list.getLength()];
for (int i = 0; i < list.getLength(); i++) {
Node n = list.item(i);
if (n.getNodeType() == Node.ELEMENT_NODE) {
res[i] = (Element) n;
}
}
return res;
}
private String unembedImages(String report) {
StringBuilder builder = new StringBuilder();
String[] result = report.split("data:image/png;base64");
if (result.length == 0) {
return report;
}
try {
TempDir tempDir = TempDirUtils.createTempDir();
for (int i = 0; i < result.length; i++) {
if (result[i].contains("</IMG>")) {
String next = result[i];
int endIndex = next.indexOf('\"');
String pngStr = next.substring(0, endIndex);
byte[] imageBytes = Base64.decodeBase64(pngStr);
String fileName = "image" + i + ".png";
File file = tempDir.createFile(fileName);
FileOutputStream fos = new FileOutputStream(file);
fos.write(imageBytes);
String path = "file:" + file.getAbsolutePath();
builder.append(path);
builder.append(next.substring(endIndex, next.length()));
} else {
builder.append(result[i]);
}
}
} catch (IOException ex) {
ex.printStackTrace();
}
return builder.toString();
}
private String embedImages(String report) {
StringBuilder builder = new StringBuilder();
String[] result = report.split("file:");
boolean first = true;
for (int i = 0; i < result.length; i++) {
if (result[i].contains("</IMG>")) {
String next = result[i];
String[] elements = next.split("\"");
String filename = elements[0];
ByteArrayOutputStream out = new ByteArrayOutputStream();
File file = new File(filename);
try {
BufferedImage image = ImageIO.read(file);
ImageIO.write((RenderedImage) image, "PNG", out);
} catch (Exception e) {
e.printStackTrace();
}
byte[] imageBytes = out.toByteArray();
String base64String = Base64.encodeBase64String(imageBytes);
if (!first) {
builder.append("\"");
}
first = false;
builder.append("data:image/png;base64,");
builder.append(base64String);
for (int j = 1; j < elements.length; j++) {
builder.append("\"");
builder.append(elements[j]);
}
} else {
builder.append(result[i]);
}
}
return builder.toString();
}
}