| Methods Summary |
|---|
| public synchronized void | actionPerformed(java.awt.event.ActionEvent event)
label.setText("Please wait while the window comes up...");
pleaseShow = true;
notify();
|
| private javax.swing.JFrame | createWindow(java.lang.String title)
Object object = null;
JFrame window = null;
//Instantiate the window class.
try {
object = windowClassObject.newInstance();
} catch (Exception e) {
label.setText("Bad parameter: Can't instantiate "
+ windowClassObject);
button.setEnabled(false);
return null;
}
//Make sure it's a frame.
try {
window = (JFrame)object;
} catch (Exception e) {
label.setText("Bad parameter: "
+ windowClassObject +
" isn't a JFrame subclass.");
button.setEnabled(false);
return null;
}
window.setTitle(title);
//Set its size.
window.pack();
if ((requestedWidth > 0)
| (requestedHeight > 0)) {
window.setSize(Math.max(requestedWidth,
window.getSize().width),
Math.max(requestedHeight,
window.getSize().height));
}
return window;
|
| public void | init()
//Look up the parameters we need right away.
windowClass = getParameter("WINDOWCLASS");
if (windowClass == null) {
windowClass = "TestWindow";
}
buttonText = getParameter("BUTTONTEXT");
if (buttonText == null) {
buttonText = "Click here to bring up a " + windowClass;
}
//Set up the button and label this applet displays.
button = new JButton(buttonText);
button.addActionListener(this);
label = new JLabel("", JLabel.CENTER);
//Add the button and label to this applet.
Container contentPane = getContentPane();
contentPane.setLayout(new GridLayout(2,0));
contentPane.add(button);
contentPane.add(label);
|
| public synchronized void | run()
Object object = null;
JFrame window = null;
String name = null;
if (shouldInitialize) {
//Look up the rest of the parameters.
windowTitle = getParameter("WINDOWTITLE");
if (windowTitle == null) {
windowTitle = windowClass;
}
String windowWidthString = getParameter("WINDOWWIDTH");
if (windowWidthString != null) {
try {
requestedWidth = Integer.parseInt(windowWidthString);
} catch (NumberFormatException e) {
//Use default width.
}
}
String windowHeightString = getParameter("WINDOWHEIGHT");
if (windowHeightString != null) {
try {
requestedHeight = Integer.parseInt(windowHeightString);
} catch (NumberFormatException e) {
//Use default height.
}
}
//Make sure the window class exists.
try {
windowClassObject = Class.forName(windowClass);
} catch (Exception e) {
//The specified class isn't anywhere that we can find.
label.setText("Bad parameter: Couldn't find class "
+ windowClass);
button.setEnabled(false);
return;
}
//Create an invisible instance.
window = createWindow(windowTitle);
if (window == null) {
return;
}
shouldInitialize = false;
}
Thread currentThread = Thread.currentThread();
while (currentThread == windowThread) {
//Wait until we're asked to show a window.
while (pleaseShow == false) {
try {
wait();
} catch (InterruptedException e) {
}
}
//We've been asked to bring up a window.
pleaseShow = false;
//Create another window if necessary.
if (window == null) {
window = createWindow(windowTitle + ": "
+ ++frameNumber);
}
window.setVisible(true);
label.setText("");
window = null;
} //end thread loop
|
| public void | start()
if (windowThread == null) {
windowThread = new Thread(this, "Bringing Up " + windowClass);
windowThread.start();
}
|
| public void | stop()
windowThread = null;
|
