Notes

package pack;

import java.awt.Color;
import java.awt.Component;
import java.awt.FileDialog;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

import java.io.*;
import java.util.ArrayList;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;




public class DefaultScreen extends Screen{

JButton fileopen;
JButton importer;
JButton save;
JTextArea xmlfields;
ArrayList<TagField> tf;
JPanel p;
JScrollPane panelscroll;
JScrollPane sc;


ArrayList<JLabel> parenttags;
String filename="";
DocumentBuilderFactory dbf;
DocumentBuilder db;
Document doc;
public DefaultScreen(final JFrame f)
{
setLayout(null);
init();
fileopen.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent arg0) {
FileDialog fd = new FileDialog(f);
fd.setLocation(50, 50);
fd.show();
filename=fd.getFile();
Loadxml(filename);
//xmlfields.setText(doc.getDocumentElement().getNodeName());
ListtagsReq(doc.getDocumentElement(), 0);
//Listtags(doc);

}
});
importer.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent arg0) {
if(filename=="")
{
JOptionPane.showConfirmDialog((Component) null, "Load an xml file first!", "alert", JOptionPane.OK_OPTION);
}
else
{
ArrayList<String> values= GetValues(doc);
for(int i=0;i<values.size();i++)
{
String s=values.get(i);
if(s.length()>0)
{
tf.get(i).content.setText(s+"abc");
}
}
}
}
});
save.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent arg0) {
Savexml("file.xml", tf.size()-1);

}
});

}
private void init()
{
p=new JPanel();
tf=new ArrayList<TagField>();
parenttags=new ArrayList<JLabel>();
xmlfields=new JTextArea();
panelscroll=new JScrollPane(p, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
//sc=new JScrollPane(this, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
fileopen=new JButton("XML betöltése");
importer=new JButton("Import");
save=new JButton("Save");
panelscroll.setBounds(50, 20, 300, 500);
panelscroll.setBorder(BorderFactory.createTitledBorder("Mezők"));
p.setLayout(new BoxLayout(p, 1));
p.setBorder(BorderFactory.createLineBorder(Color.black));
fileopen.setBounds(500, 20, 120, 30);
importer.setBounds(500, 400, 120, 30);
save.setBounds(500, 440, 120, 30);
xmlfields.setBounds(500, 70, 120, 300);
add(fileopen);
add(importer);
add(xmlfields);
add(save);
p.setBounds(50, 20, 300, 500);
//add(p);

add(panelscroll);
//TagField t=new TagField("A");
//t.setBounds(0, 500, 200, 50);
//p.add(t);
}
public String loadFile(JFrame f, String title, String defDir, String fileType)
{
FileDialog fd = new FileDialog(f, title, FileDialog.LOAD);
fd.setFile(fileType);
fd.setDirectory(defDir);
fd.setLocation(50, 50);
fd.show();
return fd.getFile();
}
public void Loadxml(String filename)
{
File file = new File(filename);
dbf = DocumentBuilderFactory.newInstance();
try {
db = dbf.newDocumentBuilder();
doc = db.parse(file);
doc.getDocumentElement().normalize();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}


}
public void Savexml(String filename, int i)
{



XPath xpath = XPathFactory.newInstance().newXPath();
NodeList nodes;
try {
nodes = (NodeList) xpath.evaluate("//employee/name[text()='old']", doc,
XPathConstants.NODESET);
for (int idx = 0; idx < nodes.getLength(); idx++) {
nodes.item(idx).setTextContent("new value");
}
Transformer xformer = TransformerFactory.newInstance().newTransformer();
xformer.transform(new DOMSource(doc), new StreamResult(new File("file.xml")));

} catch (XPathExpressionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TransformerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}



/*
Transformer transformer;
try {

transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");

//initialize StreamResult with File object to save to file
StreamResult result = new StreamResult(new File(filename));
DOMSource source = new DOMSource(doc);
transformer.transform(source, result);

String xmlString = result.getWriter().toString();
System.out.println(xmlString);
} catch (TransformerConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TransformerFactoryConfigurationError e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (TransformerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
*/

/*
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder;
try {
docBuilder = docFactory.newDocumentBuilder();
Document savedoc=docBuilder.newDocument();
Element rootElement = savedoc.createElement(doc.getDocumentElement().getNodeName());
savedoc.appendChild(rootElement);

for(int j=0;j<i;j++)
{
Element node = savedoc.createElement(tf.get(j).label.getText().replaceAll(":", ""));
node.appendChild(savedoc.createTextNode(tf.get(j).content.getText()));
rootElement.appendChild(node);

}
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(savedoc);
StreamResult result = new StreamResult(new File(filename));
transformer.transform(source, result);


} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
*/


}

public ArrayList<String> GetValues(Document doc)
{
NodeList nodeList=doc.getElementsByTagName("*");
ArrayList<String> result=new ArrayList<String>();
for (int i=0; i<nodeList.getLength(); i++)
{
// Get element
Element element = (Element)nodeList.item(i);
NodeList children=element.getChildNodes();
int z=children.getLength();
if(z<2)
{
result.add(element.getTextContent());
}
}
return result;
}
//Nem működik megfelelően, nem használandó
public void Listtags(Document doc)
{
NodeList nodeList=doc.getElementsByTagName("*");
for (int i=0; i<nodeList.getLength(); i++)
{
// Get element
Element element = (Element)nodeList.item(i);
NodeList children=element.getChildNodes();
int z=children.getLength();
if(z<2)
{
xmlfields.setText(xmlfields.getText()+element.getNodeName()+"n");
tf.add(new TagField(element.getNodeName()));
tf.get(tf.size()-1).setBounds(50, (i*100)+20, 200, 30);
//add(tf.get(i));
p.add(tf.get(tf.size()-1));
}
else
{
parenttags.add(new JLabel(element.getNodeName().toString()));
parenttags.get(parenttags.size()-1).setBounds(50, (i*100)+20, 200, 30);
p.add(parenttags.get(parenttags.size()-1));
}

}
}
//Minden kitölthető taghez generál egy beviteli mezőt, minden tartalmazó tag-hez pedig címkét.
public void ListtagsReq(Node root, int i)
{
NodeList children=root.getChildNodes();
int z=children.getLength();
//gyermekelem
if(z<2)
{
if(root.getNodeName().toString()!="#text")
{
xmlfields.setText(xmlfields.getText()+root.getNodeName()+"n");
tf.add(new TagField(root.getNodeName()));
tf.get(tf.size()-1).setBounds(50, (i*100)+20, 200, 30);
//add(tf.get(i));
p.add(tf.get(tf.size()-1));
}
if(root.getNextSibling()!=null)
ListtagsReq(root.getNextSibling(), i++);
}
//szülőelem
else
{
parenttags.add(new JLabel(root.getNodeName().toString()));
parenttags.get(parenttags.size()-1).setAlignmentX(Component.LEFT_ALIGNMENT);
parenttags.get(parenttags.size()-1).setBounds(0, 0, 200, 30);
p.add(parenttags.get(parenttags.size()-1));
ListtagsReq(root.getFirstChild(), i++);
parenttags.add(new JLabel("--------------"));
parenttags.get(parenttags.size()-1).setBounds(0, 0, 200, 30);
p.add(parenttags.get(parenttags.size()-1));
if(root.getNextSibling()!=null)
ListtagsReq(root.getNextSibling(), i++);
}

}

}