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root/lib/epcis-0.5.0/epcis-captureclient/src/main/java/org/fosstrak/epcis/captureclient/CaptureClientGui.java @ 2e0a7cb1

/*
* Copyright (C) 2007 ETH Zurich
*
* This file is part of Fosstrak (www.fosstrak.org).
*
* Fosstrak is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* Fosstrak 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Fosstrak; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/

package org.fosstrak.epcis.captureclient;

import java.awt.BorderLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Map;

import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.UIManager;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
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.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.fosstrak.epcis.captureclient.CaptureClientHelper.EpcisEventType;
import org.fosstrak.epcis.captureclient.CaptureClientHelper.ExampleEvents;
import org.fosstrak.epcis.captureclient.CaptureEvent.BizTransaction;
import org.fosstrak.epcis.gui.AuthenticationOptionsChangeEvent;
import org.fosstrak.epcis.gui.AuthenticationOptionsChangeListener;
import org.fosstrak.epcis.gui.AuthenticationOptionsPanel;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

/**
* GUI class for the EPCIS Capture Interface Client. Implements the GUI and the
* creation of XML from the GUI data.
*
* @author David Gubler
*/
public class CaptureClientGui extends WindowAdapter implements ActionListener, AuthenticationOptionsChangeListener {

/**
* The client through which the EPCISEvents will be sent to the repository's
* Capture Operations Module.
*/
private CaptureClient client;

/*
* These lists hold the input fields for the BizTransactions. The lists are
* modified by the user to allow for as many arguments as the user wants.
* Objects may be deleted from these lists by pressing the "-" Button.
*/
private ArrayList<JTextField> mwBizTransTypeFields;
private ArrayList<JTextField> mwBizTransIDFields;
private ArrayList<JButton> mwBizTransButtons;

/* main window */
private JFrame mainWindow;
private JPanel mwMainPanel;
private AuthenticationOptionsPanel mwAuthOptions;
private JPanel mwConfigPanel;
private JPanel mwEventTypePanel;
private JPanel mwEventDataPanel;
private JPanel mwEventDataInputPanel;
private JPanel mwEventDataExamplesPanel;
private JPanel mwButtonPanel;
private JLabel mwServiceUrlLabel;

private JTextField mwServiceUrlTextField;
private JComboBox mwEventTypeChooserComboBox;
private JCheckBox mwShowDebugWindowCheckBox;

/* the BizTransaction field */
private JPanel mwBizTransactionPanel;
private JButton mwBizTransactionPlus;

/* the event time field */
private JLabel mwEventTimeLabel;
private JTextField mwEventTimeTextField;
private JLabel mwEventTimeZoneOffsetLabel;
private JTextField mwEventTimeZoneOffsetTextField;

/* the action type drop-down box */
private JLabel mwActionLabel;
private JComboBox mwActionComboBox;

/* fields for the various URIs */
private JLabel mwBizStepLabel;
private JTextField mwBizStepTextField;
private JLabel mwDispositionLabel;
private JTextField mwDispositionTextField;
private JLabel mwReadPointLabel;
private JTextField mwReadPointTextField;
private JLabel mwBizLocationLabel;
private JTextField mwBizLocationTextField;
private JLabel mwBizTransactionLabel;
private JTextField mwBizTransactionTextField;

/* associated EPCs for object events */
private JLabel mwEpcListLabel;
private JTextField mwEpcListTextField;

/* parent EPC field for aggregation events */
private JLabel mwParentIDLabel;
private JTextField mwParentIDTextField;

/* associated EPCs for aggregation events */
private JLabel mwChildEPCsLabel;
private JTextField mwChildEPCsTextField;

/* EPC class for quantity events */
private JLabel mwEpcClassLabel;
private JTextField mwEpcClassTextField;

/* quantity for quantity events */
private JLabel mwQuantityLabel;
private JTextField mwQuantityTextField;

/* buttons */
private JButton mwFillInExampleButton;
private JButton mwGenerateEventButton;

/** example selection window. */
private JFrame exampleWindow;

private JPanel ewMainPanel;
private JPanel ewListPanel;
private JPanel ewButtonPanel;
private JList ewExampleList;
private JScrollPane ewExampleScrollPane;
private JButton ewOkButton;

/* debug window */
private JFrame debugWindow;

private JTextArea dwOutputTextArea;
private JScrollPane dwOutputScrollPane;
private JPanel dwButtonPanel;
private JButton dwClearButton;
/**
* Constructs a new CaptureClientGui initialized with a default address.
*/
public CaptureClientGui() {
this(null);
}

/**
* Constructs a new CaptureClientGui initialized with the given address.
*
* @param address
* The address to which the CaptureClient should sent its capture
* events.
*/
public CaptureClientGui(final String address) {
this.client = new CaptureClient(address);
initWindow();
}

/**
* Initializes the GUI window.
*/
private void initWindow() {
JFrame.setDefaultLookAndFeelDecorated(true);

mainWindow = new JFrame("EPCIS capture interface client");
mainWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainWindow.setResizable(false);

mwMainPanel = new JPanel();
mwMainPanel.setLayout(new BoxLayout(mwMainPanel, BoxLayout.PAGE_AXIS));
mwMainPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));

mwConfigPanel = new JPanel(new GridBagLayout());
mwMainPanel.add(mwConfigPanel);
mwEventTypePanel = new JPanel();
mwMainPanel.add(mwEventTypePanel);
mwEventDataPanel = new JPanel();
mwEventDataPanel.setLayout(new BoxLayout(mwEventDataPanel, BoxLayout.PAGE_AXIS));
mwMainPanel.add(mwEventDataPanel);
mwButtonPanel = new JPanel();
mwMainPanel.add(mwButtonPanel);

mwConfigPanel.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("Configuration"),
BorderFactory.createEmptyBorder(5, 5, 5, 5)));

mwEventTypePanel.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("Event type"),
BorderFactory.createEmptyBorder(5, 5, 5, 5)));

mwEventDataPanel.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("Event data"),
BorderFactory.createEmptyBorder(5, 5, 5, 5)));

mwServiceUrlLabel = new JLabel("Capture interface URL: ");
mwServiceUrlTextField = new JTextField(client.getCaptureUrl(), 75);
mwAuthOptions = new AuthenticationOptionsPanel(this);
mwServiceUrlTextField.getDocument().addDocumentListener(new DocumentListener() {

public void changedUpdate(DocumentEvent e) {
configurationChanged(new AuthenticationOptionsChangeEvent(this, isComplete()));
}

public void insertUpdate(DocumentEvent e) {
configurationChanged(new AuthenticationOptionsChangeEvent(this, isComplete()));
}

public void removeUpdate(DocumentEvent e) {
configurationChanged(new AuthenticationOptionsChangeEvent(this, isComplete()));
}
public boolean isComplete() {
String url = mwServiceUrlTextField.getText();
return url != null && url.length() > 0;
}
});

mwShowDebugWindowCheckBox = new JCheckBox("Show debug window", false);
mwShowDebugWindowCheckBox.addActionListener(this);

GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = new Insets(5, 5, 5, 0);
c.weightx = 0;
c.gridx = 0;
c.gridy = 0;
mwConfigPanel.add(mwServiceUrlLabel, c);
c.weightx = 1;
c.gridx = 1;
c.gridy = 0;
mwConfigPanel.add(mwServiceUrlTextField, c);
c.weightx = 0;
c.gridx = 0;
c.gridy = 1;
c.gridwidth = 2;
mwConfigPanel.add(mwAuthOptions, c);
c.weightx = 0;
c.gridx = 0;
c.gridy = 2;
mwConfigPanel.add(mwShowDebugWindowCheckBox, c);

mwEventTypeChooserComboBox = new JComboBox(EpcisEventType.guiNames());
mwEventTypeChooserComboBox.addActionListener(this);
mwEventTypePanel.add(mwEventTypeChooserComboBox);

mwGenerateEventButton = new JButton("Generate event");
mwGenerateEventButton.addActionListener(this);
mwButtonPanel.add(mwGenerateEventButton);

// instantiate all event data input fields, their default values and
// descriptions
mwEventTimeLabel = new JLabel("event time");
mwEventTimeTextField = new JTextField(CaptureClientHelper.format(Calendar.getInstance()));
mwEventTimeTextField.setToolTipText(CaptureClientHelper.toolTipDate);

mwEventTimeZoneOffsetLabel = new JLabel("time zone offset");
mwEventTimeZoneOffsetTextField = new JTextField(CaptureClientHelper.getTimeZone(Calendar.getInstance()));

mwActionLabel = new JLabel("action");
mwActionComboBox = new JComboBox(CaptureClientHelper.ACTIONS);

mwBizStepLabel = new JLabel("business step");
mwBizStepTextField = new JTextField();
mwBizStepTextField.setToolTipText(CaptureClientHelper.toolTipUri + CaptureClientHelper.toolTipOptional);

mwDispositionLabel = new JLabel("disposition");
mwDispositionTextField = new JTextField();
mwDispositionTextField.setToolTipText(CaptureClientHelper.toolTipUri + CaptureClientHelper.toolTipOptional);

mwReadPointLabel = new JLabel("read point");
mwReadPointTextField = new JTextField();
mwReadPointTextField.setToolTipText(CaptureClientHelper.toolTipUri + CaptureClientHelper.toolTipOptional);

mwBizLocationLabel = new JLabel("business location");
mwBizLocationTextField = new JTextField();
mwBizLocationTextField.setToolTipText(CaptureClientHelper.toolTipUri + CaptureClientHelper.toolTipOptional);

mwBizTransactionLabel = new JLabel("business transaction");
mwBizTransactionTextField = new JTextField();
mwBizTransactionTextField.setToolTipText(CaptureClientHelper.toolTipUri + CaptureClientHelper.toolTipOptional);

mwEpcListLabel = new JLabel("EPCs");
mwEpcListTextField = new JTextField();
mwEpcListTextField.setToolTipText(CaptureClientHelper.toolTipUris);

mwParentIDLabel = new JLabel("parent object");
mwParentIDTextField = new JTextField();
mwParentIDTextField.setToolTipText(CaptureClientHelper.toolTipUri);

mwChildEPCsLabel = new JLabel("child EPCs");
mwChildEPCsTextField = new JTextField();
mwChildEPCsTextField.setToolTipText(CaptureClientHelper.toolTipUris + CaptureClientHelper.toolTipOptional);

mwEpcClassLabel = new JLabel("EPC class");
mwEpcClassTextField = new JTextField();
mwChildEPCsTextField.setToolTipText(CaptureClientHelper.toolTipUri);

mwQuantityLabel = new JLabel("quantity");
mwQuantityTextField = new JTextField();
mwChildEPCsTextField.setToolTipText(CaptureClientHelper.toolTipInteger);

mwBizTransTypeFields = new ArrayList<JTextField>();
mwBizTransIDFields = new ArrayList<JTextField>();
mwBizTransButtons = new ArrayList<JButton>();

mwBizTransactionPanel = new JPanel(new GridBagLayout());
ImageIcon tempImageIcon = CaptureClientHelper.getImageIcon("new10.gif");
mwBizTransactionPlus = new JButton(tempImageIcon);
mwBizTransactionPlus.setMargin(new Insets(0, 0, 0, 0));
mwBizTransactionPlus.addActionListener(this);

addBizTransactionRow();

mwEventDataInputPanel = new JPanel(new GridBagLayout());
mwEventDataExamplesPanel = new JPanel(new BorderLayout());
mwEventDataPanel.add(mwEventDataInputPanel);
mwEventDataPanel.add(mwEventDataExamplesPanel);

drawEventDataPanel(EpcisEventType.ObjectEvent);
mwFillInExampleButton = new JButton("Fill in example");
mwFillInExampleButton.addActionListener(this);
mwEventDataExamplesPanel.add(mwFillInExampleButton, BorderLayout.EAST);

/* draw window */
mainWindow.getContentPane().add(mwMainPanel);
mainWindow.pack();
mainWindow.setVisible(true);

drawDebugWindow();
}

private void drawEventDataPanel(EpcisEventType eventType) {
mwEventDataInputPanel.removeAll();

GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = new Insets(10, 5, 5, 0);

c.gridy = 0;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwEventTimeLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwEventTimeTextField, c);

c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwEventTimeZoneOffsetLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwEventTimeZoneOffsetTextField, c);

if (EpcisEventType.ObjectEvent == eventType || EpcisEventType.TransactionEvent == eventType) {
c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwEpcListLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwEpcListTextField, c);
}

if (EpcisEventType.AggregationEvent == eventType || EpcisEventType.TransactionEvent == eventType) {
c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwParentIDLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwParentIDTextField, c);
}
if (EpcisEventType.AggregationEvent == eventType) {
c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwChildEPCsLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwChildEPCsTextField, c);
}
if (EpcisEventType.QuantityEvent == eventType) {
c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwEpcClassLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwEpcClassTextField, c);

c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwQuantityLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwQuantityTextField, c);
} else {
c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwActionLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwActionComboBox, c);
}

c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwBizStepLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwBizStepTextField, c);

c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwDispositionLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwDispositionTextField, c);

c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwReadPointLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwReadPointTextField, c);

c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwBizLocationLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwBizLocationTextField, c);

c.gridy++;
c.weightx = 0; c.gridx = 0;
mwEventDataInputPanel.add(mwBizTransactionLabel, c);
c.weightx = 1; c.gridx = 1;
mwEventDataInputPanel.add(mwBizTransactionPanel, c);
}

/**
* Sets up the window used to show the debug output.
*/
private void drawDebugWindow() {
debugWindow = new JFrame("Debug output");
debugWindow.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
debugWindow.addWindowListener(this);
debugWindow.setLocation(500, 100);
debugWindow.setSize(500, 300);

dwOutputTextArea = new JTextArea();
dwOutputScrollPane = new JScrollPane(dwOutputTextArea);
debugWindow.add(dwOutputScrollPane);

dwButtonPanel = new JPanel();
debugWindow.add(dwButtonPanel, BorderLayout.AFTER_LAST_LINE);

dwClearButton = new JButton("Clear");
dwClearButton.addActionListener(this);
dwButtonPanel.add(dwClearButton);
}

/**
* Sets up the window used to show the list of examples. Can only be open
* once.
*/
private void drawExampleWindow() {
if (exampleWindow != null) {
exampleWindow.setVisible(true);
return;
}
exampleWindow = new JFrame("Choose example");
exampleWindow.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);

ewMainPanel = new JPanel();
ewMainPanel.setLayout(new BoxLayout(ewMainPanel, BoxLayout.PAGE_AXIS));
exampleWindow.add(ewMainPanel);

ewListPanel = new JPanel();
ewListPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 5));
ewListPanel.setLayout(new BoxLayout(ewListPanel, BoxLayout.PAGE_AXIS));

ewButtonPanel = new JPanel();
ewButtonPanel.setBorder(BorderFactory.createEmptyBorder(5, 10, 10, 10));
ewButtonPanel.setLayout(new BoxLayout(ewButtonPanel, BoxLayout.LINE_AXIS));

ewMainPanel.add(ewListPanel);
ewMainPanel.add(ewButtonPanel);

ewExampleList = new JList();
ewExampleScrollPane = new JScrollPane(ewExampleList);
ewListPanel.add(ewExampleScrollPane);
ewExampleList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

String[] exampleList = new String[ExampleEvents.getExamples().size()];
for (int i = 0; i < ExampleEvents.getExamples().size(); i++) {
exampleList[i] = ExampleEvents.getExamples().get(i).getDescription();
}
ewExampleList.setListData(exampleList);

ewOkButton = new JButton("Fill in");
ewOkButton.addActionListener(this);
ewButtonPanel.add(Box.createHorizontalGlue());
ewButtonPanel.add(ewOkButton);
ewButtonPanel.add(Box.createHorizontalGlue());

exampleWindow.pack();
exampleWindow.setVisible(true);
}

/**
* Event dispatcher. Very simple events may be processed directly within
* this method.
*
* @param e
* for the Action
*/
public void actionPerformed(final ActionEvent e) {
if (e.getSource() == mwEventTypeChooserComboBox) {
mwEventTypeChooserComboBoxChanged();
return;
}
if (e.getSource() == mwGenerateEventButton) {
mwGenerateEventButtonPressed();
return;
}
if (e.getSource() == mwFillInExampleButton) {
drawExampleWindow();
return;
}
if (e.getSource() == ewOkButton) {
ewOkButtonPressed();
return;
}
if (e.getSource() == dwClearButton) {
dwOutputTextArea.setText("");
}
if (e.getSource() == mwShowDebugWindowCheckBox) {
debugWindow.setVisible(mwShowDebugWindowCheckBox.isSelected());
return;
}
if (e.getSource() == mwBizTransactionPlus) {
addBizTransactionRow();
}
// check, if it is a JButton and second, if its name starts with
// "removeBizTransNumber<Number>".
if (((JButton) e.getSource()).getName() != null
&& ((JButton) e.getSource()).getName().startsWith("removeBizTransNumber")) {
removeBizTransactionRow((JButton) e.getSource());
}
}

/**
* The user pushed the Ok button in the example window. Apply the chosen
* example to the GUI.
*/
private void ewOkButtonPressed() {
int selected = ewExampleList.getSelectedIndex();
if (selected >= 0) {
CaptureEvent ex = ExampleEvents.getExamples().get(selected);

mwEventTimeTextField.setText(ex.getEventTime());
mwEventTimeZoneOffsetTextField.setText(ex.getEventTimeZoneOffset());
if (ex.getAction() >= 0 && ex.getAction() <= 3) {
mwActionComboBox.setSelectedIndex(ex.getAction());
}
mwBizStepTextField.setText(ex.getBizStep());
mwDispositionTextField.setText(ex.getDisposition());
mwReadPointTextField.setText(ex.getReadPoint());
mwBizLocationTextField.setText(ex.getBizLocation());

ArrayList<BizTransaction> bizTrans = new ArrayList<BizTransaction>();
bizTrans = ex.getBizTransaction();
// erase all what has been.
mwBizTransTypeFields = new ArrayList<JTextField>();
mwBizTransIDFields = new ArrayList<JTextField>();
mwBizTransButtons = new ArrayList<JButton>();
int i = 0;
for (BizTransaction transaction : bizTrans) {
addBizTransactionRow();
mwBizTransTypeFields.get(i).setText(transaction.getBizTransType());
mwBizTransIDFields.get(i).setText(transaction.getBizTransID());
i++;
}
drawBizTransaction();

mwEpcListTextField.setText(ex.getEpcList());
mwChildEPCsTextField.setText(ex.getChildEPCs());
mwParentIDTextField.setText(ex.getParentID());
mwEpcClassTextField.setText(ex.getEpcClass());
if (ex.getQuantity() >= 0) {
mwQuantityTextField.setText((new Integer(ex.getQuantity())).toString());
}
exampleWindow.setVisible(false);
mwEventTypeChooserComboBox.setSelectedIndex(ex.getType());
}
}

/**
* The user changed the type of event. Update GUI accordingly.
*/
private void mwEventTypeChooserComboBoxChanged() {
/* show the corresponding input mask */
switch (mwEventTypeChooserComboBox.getSelectedIndex()) {
case 0:
drawEventDataPanel(EpcisEventType.ObjectEvent);
break;
case 1:
drawEventDataPanel(EpcisEventType.AggregationEvent);
break;
case 2:
drawEventDataPanel(EpcisEventType.QuantityEvent);
break;
case 3:
drawEventDataPanel(EpcisEventType.TransactionEvent);
break;
default:
}
/* update graphics */
mainWindow.pack();
}

/**
* The user pushed the Generate event-button. This method converts the data
* from the user interface to XML, POSTs it to the server and displays the
* answer to the user. It also does some simple client-side checks to see if
* all necessary fields are filled.
*/
private void mwGenerateEventButtonPressed() {
dwOutputTextArea.setText("");
/* used later for user interaction */
JFrame frame = new JFrame();

try {
/* DOM-tree stuff */
Document document = null;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
DOMImplementation impl = builder.getDOMImplementation();

/* temporary element variable */
Element element = null;

/* create empty document and fetch root */
document = impl.createDocument("urn:epcglobal:epcis:xsd:1", "epcis:EPCISDocument", null);
Element root = document.getDocumentElement();

root.setAttribute("creationDate", CaptureClientHelper.format(Calendar.getInstance()));
root.setAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
root.setAttribute("xmlns:epcis", "urn:epcglobal:epcis:xsd:1");
root.setAttribute("schemaVersion", "1.0");
element = document.createElement("EPCISBody");
root.appendChild(element);
root = element;
element = document.createElement("EventList");
root.appendChild(element);
root = element;
element = document.createElement(EpcisEventType.values()[mwEventTypeChooserComboBox.getSelectedIndex()].name());
root.appendChild(element);
root = element;

// eventTime
if (!CaptureClientHelper.addEventTime(document, root, mwEventTimeTextField.getText())) {
JOptionPane.showMessageDialog(frame, "Please specify the event time "
+ "(e.g. 2005-07-18T17:33:20.231Z)", "Error", JOptionPane.ERROR_MESSAGE);
return;
}

// eventTimeZoneOffset
if (!CaptureClientHelper.addEventTimeZoneOffset(document, root, mwEventTimeZoneOffsetTextField.getText())) {
JOptionPane.showMessageDialog(frame, "Please specify the event timezone offset "
+ "(e.g. +00:00 or -06:30)", "Error", JOptionPane.ERROR_MESSAGE);
return;
}

// recordTime is set by the capture-Interface

int index = mwEventTypeChooserComboBox.getSelectedIndex();
if (EpcisEventType.fromGuiIndex(index) == EpcisEventType.ObjectEvent) {
if (!CaptureClientHelper.addEpcList(document, root, mwEpcListTextField.getText())) {
JOptionPane.showMessageDialog(frame, "Please specify at least one EPC", "Error",
JOptionPane.ERROR_MESSAGE);
return;
}
CaptureClientHelper.addAction(document, root, (String) mwActionComboBox.getSelectedItem());
CaptureClientHelper.addBizStep(document, root, mwBizStepTextField.getText());
CaptureClientHelper.addDisposition(document, root, mwDispositionTextField.getText());
CaptureClientHelper.addReadPoint(document, root, mwReadPointTextField.getText());
CaptureClientHelper.addBizLocation(document, root, mwBizLocationTextField.getText());
CaptureClientHelper.addBizTransactions(document, root, fromGui(mwBizTransIDFields, mwBizTransTypeFields));
} else if (EpcisEventType.fromGuiIndex(index) == EpcisEventType.AggregationEvent) {
if (!CaptureClientHelper.addParentId(document, root, mwParentIDTextField.getText()) && !mwActionComboBox.getSelectedItem().equals("OBSERVE")) {
JOptionPane.showMessageDialog(frame, "Because action is OBSERVE, it's required to "
+ "specify a ParentID", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
if (!CaptureClientHelper.addChildEpcList(document, root, mwChildEPCsTextField.getText())) {
JOptionPane.showMessageDialog(frame, "Please specify at least one EPC", "Error",
JOptionPane.ERROR_MESSAGE);
return;
}
CaptureClientHelper.addAction(document, root, (String) mwActionComboBox.getSelectedItem());
CaptureClientHelper.addBizStep(document, root, mwBizStepTextField.getText());
CaptureClientHelper.addDisposition(document, root, mwDispositionTextField.getText());
CaptureClientHelper.addReadPoint(document, root, mwReadPointTextField.getText());
CaptureClientHelper.addBizLocation(document, root, mwBizLocationTextField.getText());
CaptureClientHelper.addBizTransactions(document, root, fromGui(mwBizTransIDFields, mwBizTransTypeFields));
} else if (EpcisEventType.fromGuiIndex(index) == EpcisEventType.QuantityEvent) {
if (!CaptureClientHelper.addEpcClass(document, root, mwEpcClassTextField.getText())) {
JOptionPane.showMessageDialog(frame, "Please specify an EPC class (URI)", "Error",
JOptionPane.ERROR_MESSAGE);
return;
}
if (!CaptureClientHelper.addQuantity(document, root, mwQuantityTextField.getText())) {
JOptionPane.showMessageDialog(frame, "Please specify a quantity value (integer number)", "Error",
JOptionPane.ERROR_MESSAGE);
return;
}
CaptureClientHelper.addBizStep(document, root, mwBizStepTextField.getText());
CaptureClientHelper.addDisposition(document, root, mwDispositionTextField.getText());
CaptureClientHelper.addReadPoint(document, root, mwReadPointTextField.getText());
CaptureClientHelper.addBizLocation(document, root, mwBizLocationTextField.getText());
CaptureClientHelper.addBizTransactions(document, root, fromGui(mwBizTransIDFields, mwBizTransTypeFields));
} else if (EpcisEventType.fromGuiIndex(index) == EpcisEventType.TransactionEvent) {
if (!CaptureClientHelper.addBizTransactions(document, root, fromGui(mwBizTransIDFields, mwBizTransTypeFields))) {
JOptionPane.showMessageDialog(frame, "Please specify at least one business "
+ "transaction (ID, Type)", "Error", JOptionPane.ERROR_MESSAGE);
return;
}
CaptureClientHelper.addParentId(document, root, mwParentIDTextField.getText());
if (!CaptureClientHelper.addEpcList(document, root, mwEpcListTextField.getText())) {
JOptionPane.showMessageDialog(frame, "Please specify at least one EPC", "Error",
JOptionPane.ERROR_MESSAGE);
return;
}
CaptureClientHelper.addAction(document, root, (String) mwActionComboBox.getSelectedItem());
CaptureClientHelper.addBizStep(document, root, mwBizStepTextField.getText());
CaptureClientHelper.addDisposition(document, root, mwDispositionTextField.getText());
CaptureClientHelper.addReadPoint(document, root, mwReadPointTextField.getText());
CaptureClientHelper.addBizLocation(document, root, mwBizLocationTextField.getText());
}

DOMSource domsrc = new DOMSource(document);

StringWriter out = new StringWriter();
StreamResult streamResult = new StreamResult(out);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer serializer = tf.newTransformer();

serializer.setOutputProperty(OutputKeys.INDENT, "yes");
serializer.transform(domsrc, streamResult);

String eventXml = out.toString();
String postData = eventXml;

dwOutputTextArea.append("sending HTTP POST data:\n");
dwOutputTextArea.append(postData);

/* connect the service, write out xml and get response */
int response = client.capture(postData);

if (response == 200) {
JOptionPane.showMessageDialog(frame, "Capture request succeeded.", "Success",
JOptionPane.INFORMATION_MESSAGE);
} else {
JOptionPane.showMessageDialog(frame, "Capture request failed (HTTP response code " + response + ").",
"Error", JOptionPane.ERROR_MESSAGE);
}

} catch (TransformerException te) {
JOptionPane.showMessageDialog(frame, te.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
StringWriter detailed = new StringWriter();
PrintWriter pw = new PrintWriter(detailed);
te.printStackTrace(pw);
dwOutputTextArea.append(detailed.toString());
} catch (ParserConfigurationException pce) {
JOptionPane.showMessageDialog(frame, pce.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
StringWriter detailed = new StringWriter();
PrintWriter pw = new PrintWriter(detailed);
pce.printStackTrace(pw);
dwOutputTextArea.append(detailed.toString());
} catch (CaptureClientException e) {
JOptionPane.showMessageDialog(frame, e.getMessage(), "Error", JOptionPane.ERROR_MESSAGE);
StringWriter detailed = new StringWriter();
PrintWriter pw = new PrintWriter(detailed);
e.printStackTrace(pw);
dwOutputTextArea.append(detailed.toString());
}
}

private Map<String, String> fromGui(ArrayList<JTextField> bizTransID, ArrayList<JTextField> bizTransType) {
if (bizTransID == null || bizTransType == null) {
return null;
}
Map<String, String> bizTransMap = new HashMap<String, String>(bizTransID.size());
for (int i = 0; i < bizTransID.size(); i++) {
if (i < bizTransID.size() && i < bizTransType.size()) {
bizTransMap.put(bizTransID.get(i).getText(), bizTransType.get(i).getText());
}
}
return bizTransMap;
}

/**
* Event handler for window manager closing events. Overrides the default,
* empty method.
*
* @param e
* The WindowEvent.
* @see java.awt.event.WindowAdapter#windowClosing(java.awt.event.WindowEvent)
*/
public void windowClosing(final WindowEvent e) {
if (e.getSource() == debugWindow) {
mwShowDebugWindowCheckBox.setSelected(false);
return;
}
}

/**
* Adds another row at the end of the Business Transactions.
*/
private void addBizTransactionRow() {
JTextField bizTransID = new JTextField();
bizTransID.setToolTipText(CaptureClientHelper.toolTipBizTransID);
JTextField bizTransType = new JTextField();
bizTransType.setToolTipText(CaptureClientHelper.toolTipBizTransType);

ImageIcon tempDelIcon = CaptureClientHelper.getImageIcon("delete10.gif");
JButton minus = new JButton(tempDelIcon);

minus.setMargin(new Insets(0, 0, 0, 0));
minus.addActionListener(this);

mwBizTransTypeFields.add(bizTransType);
mwBizTransIDFields.add(bizTransID);
mwBizTransButtons.add(minus);

drawBizTransaction();
}

/**
* Removes a row from the Business Transactions.
*
* @param button
* The JButton which generated the event.
*/
private void removeBizTransactionRow(final JButton button) {
int toRemove = Integer.parseInt(button.getName().substring(button.getName().length() - 1,
button.getName().length()));
mwBizTransTypeFields.remove(toRemove);
mwBizTransIDFields.remove(toRemove);
mwBizTransButtons.remove(toRemove);

drawBizTransaction();
}

/**
* After having added or deleted a Row from the BusinessTransactions, it has
* to be re-drawn.
*/
private void drawBizTransaction() {
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;
c.insets = new Insets(2, 5, 5, 0);

mwBizTransactionPanel.removeAll();

int i = 0;
c.weightx = 0;
c.gridx = 0;
c.fill = GridBagConstraints.NONE;
for (JButton j : mwBizTransButtons) {
// every name from minus-Buttons has
// to start with "removeBizTransNumber<Number>"
j.setName("removeBizTransNumber" + i);
c.gridy = i;
mwBizTransactionPanel.add(j, c);
i++;
}

i = 0;
c.weightx = 1;
c.gridx = 1;
c.fill = GridBagConstraints.BOTH;
for (JTextField j : mwBizTransIDFields) {
c.gridy = i;
mwBizTransactionPanel.add(j, c);
i++;
}
i = 0;
c.weightx = 1;
c.gridx = 2;
c.fill = GridBagConstraints.BOTH;
for (JTextField j : mwBizTransTypeFields) {
c.gridy = i;
mwBizTransactionPanel.add(j, c);
i++;
}

c.weightx = 0;
c.gridx = 0;
c.gridy = i + 1;
c.fill = GridBagConstraints.NONE;
mwBizTransactionPanel.add(mwBizTransactionPlus, c);

// in case of having no BusinessTransactionfields,
// we need to insert two "null"-elements that the
// plus-Button is left-aligned.
if (i == 0) {
c.weightx = 1;
c.gridx = 1;
c.gridy = i + 1;
c.fill = GridBagConstraints.BOTH;
mwBizTransactionPanel.add(new JPanel(), c);
c.weightx = 1;
c.gridx = 2;
c.gridy = i + 1;
mwBizTransactionPanel.add(new JPanel(), c);
}

mainWindow.pack();
}

/**
* Instantiates a new CaptureClientGui using a look-and-feel that matches
* the operating system.
*
* @param args
* The address to which the CaptureClient should send the capture
* events. If omitted, a default address will be provided.
*/
public static void main(final String[] args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
e.printStackTrace();
}
if (args != null && args.length > 0) {
// a default url is given
new CaptureClientGui(args[0]);
} else {
new CaptureClientGui();
}
}

public void configurationChanged(AuthenticationOptionsChangeEvent ace) {
if (ace.isComplete()) {
mwGenerateEventButton.setEnabled(true);
client = new CaptureClient(mwServiceUrlTextField.getText(), mwAuthOptions.getAuthenticationOptions());
} else {
mwGenerateEventButton.setEnabled(false);
}
}
}
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