public Channels() {
super("Channels");
if (instance != null) {
instance.toFront();
return;
}
WindowManager.addWindow(this);
instance = this;
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
setLayout(gridbag);
int y = 0;
c.gridx = 0;
c.gridy = y++;
c.gridwidth = 1;
c.fill = GridBagConstraints.BOTH;
c.anchor = GridBagConstraints.CENTER;
int margin = 32;
if (IJ.isMacOSX()) margin = 20;
c.insets = new Insets(10, margin, 10, margin);
choice = new Choice();
for (int i = 0; i < modes.length; i++) choice.addItem(modes[i]);
choice.select(0);
choice.addItemListener(this);
add(choice, c);
CompositeImage ci = getImage();
int nCheckBoxes = ci != null ? ci.getNChannels() : 3;
if (nCheckBoxes > CompositeImage.MAX_CHANNELS) nCheckBoxes = CompositeImage.MAX_CHANNELS;
checkbox = new Checkbox[nCheckBoxes];
for (int i = 0; i < nCheckBoxes; i++) {
checkbox[i] = new Checkbox("Channel " + (i + 1), true);
c.insets = new Insets(0, 25, i < nCheckBoxes - 1 ? 0 : 10, 5);
c.gridy = y++;
add(checkbox[i], c);
checkbox[i].addItemListener(this);
}
c.insets = new Insets(0, 15, 10, 15);
c.fill = GridBagConstraints.NONE;
c.gridy = y++;
moreButton = new Button(moreLabel);
moreButton.addActionListener(this);
add(moreButton, c);
update();
pm = new PopupMenu();
for (int i = 0; i < menuItems.length; i++) addPopupItem(menuItems[i]);
add(pm);
addKeyListener(IJ.getInstance()); // ImageJ handles keyboard shortcuts
setResizable(false);
pack();
if (location == null) {
GUI.center(this);
location = getLocation();
} else setLocation(location);
show();
}
