String showDialog() {
if (defaultDir == null) defaultDir = Menus.getMacrosPath();
OpenDialog od = new OpenDialog("Install Macros", defaultDir, fileName);
String name = od.getFileName();
if (name == null) return null;
String dir = od.getDirectory();
if (!(name.endsWith(".txt") || name.endsWith(".ijm"))) {
IJ.showMessage("Macro Installer", "File name must end with \".txt\" or \".ijm\" .");
return null;
}
fileName = name;
defaultDir = dir;
return dir + name;
}
