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/**
* @version 1.00 1999-07-17
* @author Cay Horstmann
*/
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import java.util.Stack;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
public class EditorPaneTest {
public static void main(String[] args) {
JFrame frame = new EditorPaneFrame();
frame.show();
}
}
class EditorPaneFrame extends JFrame {
public EditorPaneFrame() {
setTitle("EditorPaneTest");
setSize(600, 400);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
// set up text field and load button for typing in URL
url = new JTextField(30);
loadButton = new JButton("Load");
loadButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
try { // remember URL for back button
urlStack.push(url.getText());
editorPane.setPage(url.getText());
} catch (IOException e) {
editorPane.setText("Error: " + e);
}
}
});
// set up back button and button action
backButton = new JButton("Back");
backButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
if (urlStack.size() <= 1)
return;
try { // get URL from back button
urlStack.pop();
// show URL in text field
String urlString = (String) urlStack.peek();
url.setText(urlString);
editorPane.setPage(urlString);
} catch (IOException e) {
editorPane.setText("Error: " + e);
}
}
});
// set up editor pane and hyperlink listener
editorPane = new JEditorPane();
editorPane.setEditable(false);
editorPane.addHyperlinkListener(new HyperlinkListener() {
public void hyperlinkUpdate(HyperlinkEvent event) {
if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
try { // remember URL for back button
urlStack.push(event.getURL().toString());
// show URL in text field
url.setText(event.getURL().toString());
editorPane.setPage(event.getURL());
} catch (IOException e) {
editorPane.setText("Error: " + e);
}
}
}
});
// set up checkbox for toggling edit mode
editable = new JCheckBox();
editable.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
editorPane.setEditable(editable.isSelected());
}
});
Container contentPane = getContentPane();
contentPane.add(new JScrollPane(editorPane), "Center");
// put all control components in a panel
JPanel panel = new JPanel();
panel.add(new JLabel("URL"));
panel.add(url);
panel.add(loadButton);
panel.add(backButton);
panel.add(new JLabel("Editable"));
panel.add(editable);
contentPane.add(panel, "South");
}
private JTextField url;
private JCheckBox editable;
private JButton loadButton;
private JButton backButton;
private JEditorPane editorPane;
private Stack urlStack = new Stack();
}
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