/**
* Creates a new AWT <tt>Container</tt> which can display a single <tt>Component</tt> at a time
* (supposedly, one which represents video) and, in the absence of such a <tt>Component</tt>,
* displays a predefined default <tt>Component</tt> (in accord with the previous supposition, one
* which is the default when there is no video). The returned <tt>Container</tt> will track the
* <tt>Components</tt>s added to and removed from it in order to make sure that
* <tt>noVideoContainer</tt> is displayed as described.
*
* @param noVideoComponent the predefined default <tt>Component</tt> to be displayed in the
* returned <tt>Container</tt> when there is no other <tt>Component</tt> in it
* @return a new <tt>Container</tt> which can display a single <tt>Component</tt> at a time and,
* in the absence of such a <tt>Component</tt>, displays <tt>noVideoComponent</tt>
*/
private VideoContainer createVideoContainer(Component noVideoComponent) {
Container oldParent = noVideoComponent.getParent();
if (oldParent != null) oldParent.remove(noVideoComponent);
return new VideoContainer(noVideoComponent, false);
}
/**
* Creates an instance of <tt>SelectScreenDialog</tt> by specifying the list of possible desktop
* devices to choose from.
*
* @param desktopDevices the list of possible desktop devices to choose from
*/
public SelectScreenDialog(List<MediaDevice> desktopDevices) {
setModal(true);
setPreferredSize(new Dimension(400, 300));
Container contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());
deviceComboBox = new JComboBox(desktopDevices.toArray());
contentPane.add(deviceComboBox, BorderLayout.NORTH);
deviceComboBox.setRenderer(new ComboRenderer());
contentPane.add(createPreview(deviceComboBox));
contentPane.add(createButtonsPanel(), BorderLayout.SOUTH);
}
/**
* Creates basic controls for a type (AUDIO or VIDEO).
*
* @param type the type.
* @return the build Component.
*/
public static Component createBasicControls(final int type) {
final JComboBox deviceComboBox = new JComboBox();
deviceComboBox.setEditable(false);
deviceComboBox.setModel(
new DeviceConfigurationComboBoxModel(
deviceComboBox, mediaService.getDeviceConfiguration(), type));
JLabel deviceLabel = new JLabel(getLabelText(type));
deviceLabel.setDisplayedMnemonic(getDisplayedMnemonic(type));
deviceLabel.setLabelFor(deviceComboBox);
final Container devicePanel = new TransparentPanel(new FlowLayout(FlowLayout.CENTER));
devicePanel.setMaximumSize(new Dimension(WIDTH, 25));
devicePanel.add(deviceLabel);
devicePanel.add(deviceComboBox);
final JPanel deviceAndPreviewPanel = new TransparentPanel(new BorderLayout());
int preferredDeviceAndPreviewPanelHeight;
switch (type) {
case DeviceConfigurationComboBoxModel.AUDIO:
preferredDeviceAndPreviewPanelHeight = 225;
break;
case DeviceConfigurationComboBoxModel.VIDEO:
preferredDeviceAndPreviewPanelHeight = 305;
break;
default:
preferredDeviceAndPreviewPanelHeight = 0;
break;
}
if (preferredDeviceAndPreviewPanelHeight > 0)
deviceAndPreviewPanel.setPreferredSize(
new Dimension(WIDTH, preferredDeviceAndPreviewPanelHeight));
deviceAndPreviewPanel.add(devicePanel, BorderLayout.NORTH);
final ActionListener deviceComboBoxActionListener =
new ActionListener() {
public void actionPerformed(ActionEvent event) {
boolean revalidateAndRepaint = false;
for (int i = deviceAndPreviewPanel.getComponentCount() - 1; i >= 0; i--) {
Component c = deviceAndPreviewPanel.getComponent(i);
if (c != devicePanel) {
deviceAndPreviewPanel.remove(i);
revalidateAndRepaint = true;
}
}
Component preview = null;
if ((deviceComboBox.getSelectedItem() != null) && deviceComboBox.isShowing()) {
preview =
createPreview(type, deviceComboBox, deviceAndPreviewPanel.getPreferredSize());
}
if (preview != null) {
deviceAndPreviewPanel.add(preview, BorderLayout.CENTER);
revalidateAndRepaint = true;
}
if (revalidateAndRepaint) {
deviceAndPreviewPanel.revalidate();
deviceAndPreviewPanel.repaint();
}
}
};
deviceComboBox.addActionListener(deviceComboBoxActionListener);
/*
* We have to initialize the controls to reflect the configuration
* at the time of creating this instance. Additionally, because the
* video preview will stop when it and its associated controls
* become unnecessary, we have to restart it when the mentioned
* controls become necessary again. We'll address the two goals
* described by pretending there's a selection in the video combo
* box when the combo box in question becomes displayable.
*/
deviceComboBox.addHierarchyListener(
new HierarchyListener() {
public void hierarchyChanged(HierarchyEvent event) {
if ((event.getChangeFlags() & HierarchyEvent.SHOWING_CHANGED) != 0) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
deviceComboBoxActionListener.actionPerformed(null);
}
});
}
}
});
return deviceAndPreviewPanel;
}