AudioAccessorypublic class AudioAccessory extends JPanel implements PropertyChangeListener, ActionListener
| Fields Summary |
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| AudioClip | currentClip | | String | currentName | | JLabel | fileLabel | | JButton | playButton | | JButton | stopButton |
| Constructors Summary |
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public AudioAccessory()
// Set up the accessory. The file chooser will give us a reasonable size.
setLayout(new BorderLayout());
add(fileLabel = new JLabel("Clip Name"), BorderLayout.NORTH);
JPanel p = new JPanel();
playButton = new JButton("Play");
stopButton = new JButton("Stop");
playButton.setEnabled(false);
stopButton.setEnabled(false);
p.add(playButton);
p.add(stopButton);
add(p, BorderLayout.CENTER);
playButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (currentClip != null) {
currentClip.stop();
currentClip.play();
}
}
});
stopButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (currentClip != null) {
currentClip.stop();
}
}
});
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| Methods Summary |
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| public void | actionPerformed(java.awt.event.ActionEvent ae)
// Be a little cavalier here...we're assuming the dialog was just
// approved or cancelled so we should stop any playing clip
if (currentClip != null) { currentClip.stop(); }
| | public void | propertyChange(java.beans.PropertyChangeEvent e)
String pname = e.getPropertyName();
if (JFileChooser.SELECTED_FILE_CHANGED_PROPERTY.equals(pname)) {
// Ok, the user selected a file in the chooser
File f = (File)e.getNewValue();
// Make reasonably sure it's an audio file
if ((f != null) &&
(f.getName().toLowerCase().endsWith(".au") ||
f.getName().toLowerCase().endsWith(".wav") ||
f.getName().toLowerCase().endsWith(".aif") ||
f.getName().toLowerCase().endsWith(".aiff"))
) {
setCurrentClip(f);
}
else {
setCurrentClip(null);
}
}
| | public void | setCurrentClip(java.io.File f)
if (currentClip != null) { currentClip.stop(); }
// Make sure we have a real file, otherwise, disable the buttons
if ((f == null) || (f.getName() == null)) {
fileLabel.setText("no audio selected");
playButton.setEnabled(false);
stopButton.setEnabled(false);
return;
}
// Ok, seems the audio file is real, so load it and enable the buttons
String name = f.getName();
if (name.equals(currentName)) {
// Same clip they just loaded...make sure the player is enabled
fileLabel.setText(name);
playButton.setEnabled(true);
stopButton.setEnabled(true);
return;
}
currentName = name;
try {
URL u = new URL("file:///" + f.getAbsolutePath());
currentClip = Applet.newAudioClip(u);
}
catch (Exception e) {
e.printStackTrace();
currentClip = null;
fileLabel.setText("Error loading clip.");
}
fileLabel.setText(name);
playButton.setEnabled(true);
stopButton.setEnabled(true);
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