/*
* Created on Jun 29, 2004
*
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
package net.sf.jabref.imports;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.JDialog;
import javax.swing.JOptionPane;
import net.sf.jabref.BasePanel;
import net.sf.jabref.BibtexEntry;
import net.sf.jabref.undo.NamedCompound;
import net.sf.jabref.undo.UndoableFieldChange;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
* @author mspiegel
*
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
public class CiteSeerUndoHandler extends DefaultHandler {
NamedCompound citeseerNamedCompound = null;
BibtexEntry bibEntry = null;
String nextField = null;
boolean nextAssign = false;
BasePanel panel = null;
BooleanAssign overwriteAll;
BooleanAssign overwriteNone;
BooleanAssign recordFound;
String newAuthors = null;
int citeseerCitationCount = 0;
/*
* Woe unto those who call this function from anywhere but
* makeOverwriteChoice(). You will seriously f*&k things up.
*/
private boolean overwriteDialog(String oldValue, String newValue,
String fieldName) {
boolean retval = false;
Object[] possibilities = { "Yes", "Yes to All", "No", "No to All" };
final JOptionPane optionPane = new JOptionPane(
"Do you want to overwrite the value '" + oldValue
+ "' \nwith the value '" + newValue + "' \nfor the "
+ fieldName + " field?", JOptionPane.QUESTION_MESSAGE,
JOptionPane.DEFAULT_OPTION, null, possibilities, "No");
final JDialog dialog = new JDialog(panel.frame().getFrame(), "Overwrite Value",
true);
dialog.setContentPane(optionPane);
dialog.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
optionPane.addPropertyChangeListener(new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent e) {
String prop = e.getPropertyName();
if (dialog.isVisible() && (e.getSource() == optionPane)
&& (prop.equals(JOptionPane.VALUE_PROPERTY))) {
//If you were going to check something
//before closing the window, you'd do
//it here.
dialog.setVisible(false);
}
}
});
dialog.pack();
dialog.setVisible(true);
String userChoice = (String) optionPane.getValue();
if (userChoice.equals("Yes to All")) {
overwriteAll.setValue(true);
retval = true;
} else if (userChoice.equals("Yes")) {
retval = true;
} else if (userChoice.equals("No to All")) {
overwriteNone.setValue(true);
}
return (retval);
}
public CiteSeerUndoHandler(NamedCompound newCompound, BibtexEntry be,
BasePanel basePanel, BooleanAssign assignment, BooleanAssign overwriteAll, BooleanAssign overwriteNone) {
citeseerNamedCompound = newCompound;
bibEntry = be;
panel = basePanel;
recordFound = assignment;
recordFound.setValue(false);
this.overwriteAll = overwriteAll;
this.overwriteNone = overwriteNone;
}
public CiteSeerUndoHandler(NamedCompound newCompound, BibtexEntry be,
BasePanel basePanel, BooleanAssign assignment) {
this(newCompound, be, basePanel, assignment, new BooleanAssign(false), new BooleanAssign(false));
}
public void characters(char[] ch, int start, int length) {
if (nextAssign == true) {
String target = new String(ch, start, length);
if (nextField.equals("title")) {
if (makeOverwriteChoice(bibEntry.getField(nextField),
target, nextField)) {
UndoableFieldChange fieldChange = new UndoableFieldChange(
bibEntry, nextField, bibEntry.getField(nextField),
target);
citeseerNamedCompound.addEdit(fieldChange);
bibEntry.setField(nextField, target);
}
} else if (nextField.equals("year")) {
if (makeOverwriteChoice(bibEntry.getField(nextField),
String.valueOf(target.substring(0, 4)), nextField)) {
UndoableFieldChange fieldChange = new UndoableFieldChange(
bibEntry, nextField, bibEntry.getField(nextField),
String.valueOf(target.substring(0, 4)));
citeseerNamedCompound.addEdit(fieldChange);
bibEntry.setField(nextField, String.valueOf(target
.substring(0, 4)));
}
} else if (nextField.equals("citeseerurl")) {
if (makeOverwriteChoice(bibEntry.getField(nextField),
target, nextField)) {
UndoableFieldChange fieldChange = new UndoableFieldChange(
bibEntry, nextField, bibEntry.getField(nextField),
target);
citeseerNamedCompound.addEdit(fieldChange);
bibEntry.setField(nextField, target);
}
}
nextAssign = false;
}
}
/**
* @param oldValue
* @param newValue
* @param fieldName
* @return overwrite
*/
private boolean makeOverwriteChoice(String oldValue, String newValue,
String fieldName) {
boolean overwrite;
if ((oldValue == null) || (oldValue.equals("")))
overwrite = true;
else if (oldValue.equals(newValue))
overwrite = false;
else if (overwriteAll.getValue() == true)
overwrite = true;
else if (overwriteNone.getValue() == true)
overwrite = false;
else
overwrite = overwriteDialog(oldValue, newValue, fieldName);
if (overwrite)
recordFound.setValue(true);
return overwrite;
}
public void startElement(String name, String localName, String qName, Attributes attrs)
throws SAXException {
if (qName.equals("oai_citeseer:relation")) {
for (int i = 0; i < attrs.getLength(); i++) {
String attrName = attrs.getQName(i);
String attrValue = attrs.getValue(i);
if (attrName.equals("type") && attrValue.equals("Is Referenced By")) {
citeseerCitationCount++;
}
}
} else if (qName.equals("oai_citeseer:author")) {
addAuthor(attrs.getValue("name"));
} else if (qName.equals("dc:title")) {
nextField = "title";
nextAssign = true;
} else if (qName.equals("dc:date")) {
nextField = "year";
nextAssign = true;
} else if (qName.equals("dc:identifier")) {
nextField = "citeseerurl";
nextAssign = true;
}
}
public void endDocument() {
if (newAuthors != null) {
if (makeOverwriteChoice(bibEntry.getField("author"),
newAuthors, "author")) {
UndoableFieldChange fieldChange = new UndoableFieldChange(
bibEntry, "author", bibEntry.getField("author"), newAuthors);
citeseerNamedCompound.addEdit(fieldChange);
bibEntry.setField("author", newAuthors);
}
}
String newCount = new Integer(citeseerCitationCount).toString();
UndoableFieldChange fieldChange = new UndoableFieldChange(
bibEntry, "citeseercitationcount",
bibEntry.getField("citeseercitationcount"),
newCount);
citeseerNamedCompound.addEdit(fieldChange);
bibEntry.setField("citeseercitationcount", newCount);
}
/**
* @param string
*/
private void addAuthor(String newAuthor) {
if (newAuthors == null) {
newAuthors = newAuthor;
} else {
newAuthors = newAuthors + " and " + newAuthor;
}
}
}