JDK 1.4.2 java applet image printing on mac safari

Question

Hi there,
I'm trying to implement printing inside java applet using javax.print package. I read an article somewhere about the package not working perfectly under mac, and a workaround is to use the old java.awt.print to get the print services, then use the DocPrintJob to print.
The SimpleDoc I use for capturing the image that I need to print works fine, and the printServices are there. The problem I have is it's giving me an 'invalid flavor' exception when clicking 'Print' on popup PrintDialog.
It seems that the mimetype is what's causing the problem, as the printer's supported mime type is "application/x-java-jvm-local-objectref". (note that, on PC the printing works fine, with Doc flavor mimetype as image/png and the image I need to print in png format). I tried switching the flavor to SERVICE_FORMATTED.RENDERABLE_IMAGE, printing an ImageDoc class which implements Doc and RenderableImage, but 'invalid flavor' exception still occurs.
I don't know much about printers on Mac, so I'm not sure what I can do about it, is it something that can be controlled from the Applet or it's something that the user has to set in the system - the Applet can only warn the user and tell the user to do the configuration.
Thanks in advance!

Answer 1

SwingUtilities.updateComponentTreeUI() works by first updating the UI of the given component, and then updating the component's children (and their children). So first it will update the JToolBar's UI (which installs the appropriate borders on its buttons), and then it will update each button's UI (which subsequently installs its own default border onto the button, undoing JToolBar's border installation, thanks to the bug mentioned previously).
Another possible work-around for this problem would be to write your own updateComponentTreeUI() method that updates the child components' UI's before updating the parent component's UI:public static void newUpdateComponentTreeUI(Component c)
     updateTreeUIs(c);
     c.invalidate();
     c.validate();
     c.repaint();
private static void updateTreeUIs(Component c)
     Component[] children = null;
     if (c instanceof JMenu) children = ((JMenu)c).getMenuComponents();
     else if (c instanceof Container) children = ((Container)c).getComponents();
     // Children first...
     for (int i=0; children != null && i < children.length; i++)
          updateTreeUIs(children);
     // Parent last...
     if (c instanceof JComponent) ((JComponent)c).updateUI();
}Not sure if this will present any other conflicts though.