| Methods Summary |
|---|
| private void | initActions()
quitMenuItem.addActionListener (new QuitAction());
BlockingLoadAction blocker = new BlockingLoadAction();
blockButton.addActionListener (blocker);
blockMenuItem.addActionListener (blocker);
NonBlockingLoadAction nonBlocker = new NonBlockingLoadAction();
dontBlockButton.addActionListener (nonBlocker);
dontBlockMenuItem.addActionListener (nonBlocker);
|
| private void | initMainLayout()
urlField = new JTextField (DEFAULT_URL, 60);
JPanel topPanel = new JPanel ();
topPanel.setLayout (new BoxLayout (topPanel, BoxLayout.Y_AXIS));
topPanel.add (urlField);
JPanel buttonPanel = new JPanel();
blockButton = new JButton ("Load (blocking)");
dontBlockButton = new JButton ("Load (non-blocking)");
buttonPanel.add (blockButton);
buttonPanel.add (dontBlockButton);
topPanel.add (buttonPanel);
contentArea = new JTextArea (25, 60);
JScrollPane scroller =
new JScrollPane (contentArea,
ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,
ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
getContentPane().setLayout(new BorderLayout());
getContentPane().add (topPanel, BorderLayout.NORTH);
getContentPane().add (scroller, BorderLayout.CENTER);
|
| private void | initMenus()
JMenuBar bar = new JMenuBar();
JMenu fileMenu = new JMenu ("File");
blockMenuItem = new JMenuItem ("Load (blocking)");
dontBlockMenuItem = new JMenuItem ("Load (non-blocking)");
fileMenu.add (blockMenuItem);
fileMenu.add (dontBlockMenuItem);
fileMenu.addSeparator();
quitMenuItem = new JMenuItem ("Quit");
fileMenu.add (quitMenuItem);
bar.add (fileMenu);
setJMenuBar (bar);
|
| public void | loadURL(boolean useWorker)
try {
URL url = new URL (urlField.getText());
BufferedReader in =
new BufferedReader (
new InputStreamReader (url.openStream()));
StringBuffer sbuf = new StringBuffer();
char[] buffy = new char [16 * 1024];
int bytesRead = 0;
while ((bytesRead = in.read (buffy, 0, buffy.length)) > -1) {
sbuf.append (buffy, 0, bytesRead);
// if your net connection is too fast to see blocking
// add the following here:
// Thread.sleep (50);
}
if (! useWorker) {
contentArea.setText (sbuf.toString());
contentArea.setCaretPosition(0);
} else {
final StringBuffer finalSBuf = sbuf;
Thread worker = new Thread() {
public void run () {
contentArea.setText (finalSBuf.toString());
contentArea.setCaretPosition(0);
}
};
SwingUtilities.invokeLater (worker);
}
} catch (Exception e) {
CharArrayWriter writer = new CharArrayWriter();
e.printStackTrace (new PrintWriter (writer));
contentArea.setText(writer.toString());
contentArea.setCaretPosition(0);
}
|
| public static void | main(java.lang.String[] args)
AWTBlockDemo awtbd = new AWTBlockDemo();
awtbd.pack();
awtbd.setVisible (true);
|
