com.github.bordertech.wcomponents.test.ValidatorApp Maven / Gradle / Ivy
package com.github.bordertech.wcomponents.test;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.StringReader;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import junit.framework.AssertionFailedError;
import org.custommonkey.xmlunit.NamespaceContext;
import org.custommonkey.xmlunit.Validator;
import org.custommonkey.xmlunit.XMLUnit;
import org.xml.sax.SAXException;
/**
* ValidatorApp provides a quick way to validate arbitrary XML output against the schema. The ValidatorApp should be run
* from the command-line.
*
* @author Yiannis Paschalidis
* @since 1.0.0
*/
public final class ValidatorApp extends JFrame {
/**
* The input text area, for users to enter in XML to be validated.
*/
private final JTextArea in = new JTextArea(25, 80);
/**
* The output text area, where validation errors are displayed.
*/
private final JTextArea out = new JTextArea(10, 80);
/**
* Creates a ValidatorApp.
*/
public ValidatorApp() {
super("Theme 2x XHTML Validator");
setDefaultCloseOperation(EXIT_ON_CLOSE);
getContentPane().setLayout(new BorderLayout());
in.setLineWrap(true);
in.setWrapStyleWord(true);
JPanel topPanel = new JPanel();
topPanel.setLayout(new BorderLayout());
topPanel.add(new JLabel("XML to validate:"), BorderLayout.NORTH);
JScrollPane scrollPane = new JScrollPane(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane.getViewport().add(in);
topPanel.add(scrollPane, BorderLayout.CENTER);
JButton validateButton = new JButton("Validate");
validateButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(final ActionEvent event) {
validateXml();
}
});
JPanel bottomPanel = new JPanel();
bottomPanel.setLayout(new BorderLayout());
bottomPanel.add(validateButton, BorderLayout.NORTH);
bottomPanel.add(new JScrollPane(out), BorderLayout.CENTER);
getContentPane().add(topPanel, BorderLayout.CENTER);
getContentPane().add(bottomPanel, BorderLayout.SOUTH);
pack();
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
setLocation((screenSize.width - getWidth()) / 2, (screenSize.height - getHeight()) / 2);
setVisible(true);
}
/**
* Validates the XML contained in the input text area and displays the errors (if any) in the output text area.
*/
private void validateXml() {
String xhtml = in.getText();
try {
assertSchemaMatch(xhtml);
out.setText("Valid!");
out.setCaretPosition(0);
} catch (AssertionFailedError error) {
out.setText(error.getMessage().replaceAll("cvc-complex-type.2.4.a:", "\n").trim());
out.setCaretPosition(0);
} catch (Exception e) {
out.setText(e.getMessage());
}
}
/**
* Asserts that the given xhtml matches the schema.
*
* @param xhtml the xhtmlto validate.
*
* @throws SAXException if there is a parsing error
*/
public void assertSchemaMatch(final String xhtml) throws SAXException {
// Load the schema.
Object schema = getClass().getResource("/schema/ui/v1/schema.xsd").toString();
// Validate the xhtml.
Validator validator;
StringReader reader = new StringReader(xhtml);
validator = new Validator(reader);
validator.useXMLSchema(true);
validator.setJAXP12SchemaSource(schema);
validator.assertIsValid();
}
/**
* A namespace context that handles the "ui" namespace.
*
* @author Yiannis Paschalidis
*/
private static final class XmlLayoutTestNamespaceContext implements NamespaceContext {
/**
* The backing context, used for resolving namespaces which this context does not know about.
*/
private final NamespaceContext backing;
/**
* Creates a XmlLayoutTestNamespaceContext.
*
* @param backing the backing context, used for resolving unknown namespaces.
*/
XmlLayoutTestNamespaceContext(final NamespaceContext backing) {
this.backing = backing;
}
/**
* Returns the namespace uri for the given prefix.
*
* @param prefix the namespace prefix
* @return the namespace uri, or null if an unknown prefix was supplied.
*/
@Override
public String getNamespaceURI(final String prefix) {
if ("ui".equals(prefix)) {
return "https://github.com/bordertech/wcomponents/namespace/ui/v1.0";
} else if ("html".equals(prefix)) {
return "http://www.w3.org/1999/xhtml";
} else if (backing != null) {
return backing.getNamespaceURI(prefix);
}
return null;
}
/**
* @return an iteration of the namespace prefixes in this contex.t
*/
@Override
public Iterator getPrefixes() {
Set prefixes = new HashSet<>(2);
prefixes.add("ui");
prefixes.add("html");
if (backing != null) {
for (Iterator i = backing.getPrefixes(); i.hasNext();) {
prefixes.add((String) i.next());
}
}
return prefixes.iterator();
}
}
/**
* Main entry method.
*
* @param args the program command-line arguments (ignored).
*/
public static void main(final String[] args) {
// Need to register the "ui" prefix with XMLUnit so that we can use it in XPath expressions
NamespaceContext context = XMLUnit.getXpathNamespaceContext();
context = new XmlLayoutTestNamespaceContext(context);
XMLUnit.setXpathNamespaceContext(context);
new ValidatorApp();
}
}