Class ServiceUI

java.lang.Object
javax.print.ServiceUI
public class ServiceUI extends Object
This class is a collection of UI convenience methods which provide a graphical user dialog for browsing print services looked up through the Java Print Service API.

The dialogs follow a standard pattern of acting as a continue/cancel option for a user as well as allowing the user to select the print service to use and specify choices such as paper size and number of copies.

The dialogs are designed to work with pluggable print services though the public APIs of those print services.

If a print service provides any vendor extensions these may be made accessible to the user through a vendor supplied tab panel Component. Such a vendor extension is encouraged to use Swing! and to support its accessibility APIs. The vendor extensions should return the settings as part of the AttributeSet. Applications which want to preserve the user settings should use those settings to specify the print job. Note that this class is not referenced by any other part of the Java Print Service and may not be included in profiles which cannot depend on the presence of the AWT packages.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ServiceUI()
    Constructs a ServiceUI.

  • Method Summary

    Modifier and Type
    Method
    Description
    static PrintService
    printDialog(GraphicsConfiguration gc, int x, int y, PrintService[] services, PrintService defaultService, DocFlavor flavor, PrintRequestAttributeSet attributes)
    Presents a dialog to the user for selecting a print service (printer).

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Creates and returns a copy of this object.
    boolean
    equals(Object obj)
    Indicates whether some other object is "equal to" this one.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    Finalization is deprecated and subject to removal in a future release.
    final Class<?>
    getClass()
    Returns the runtime class of this Object.
    int
    hashCode()
    Returns a hash code value for this object.
    final void
    notify()
    Wakes up a single thread that is waiting on this object's monitor.
    final void
    notifyAll()
    Wakes up all threads that are waiting on this object's monitor.
    String
    toString()
    Returns a string representation of the object.
    final void
    wait()
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
    final void
    wait(long timeoutMillis)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
    final void
    wait(long timeoutMillis, int nanos)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

  • Constructor Details

    • ServiceUI

      public ServiceUI()
      Constructs a ServiceUI.

  • Method Details

    • printDialog

      public static PrintService printDialog(GraphicsConfiguration gc, int x, int y, PrintService[] services, PrintService defaultService, DocFlavor flavor, PrintRequestAttributeSet attributes) throws HeadlessException
      Presents a dialog to the user for selecting a print service (printer). It is displayed at the location specified by the application and is modal. If the specification is invalid or would make the dialog not visible it will be displayed at a location determined by the implementation. The dialog blocks its calling thread and is application modal.

      The dialog may include a tab panel with custom UI lazily obtained from the PrintService's ServiceUIFactory when the PrintService is browsed. The dialog will attempt to locate a MAIN_UIROLE first as a JComponent, then as a Panel. If there is no ServiceUIFactory or no matching role the custom tab will be empty or not visible.

      The dialog returns the print service selected by the user if the user OK's the dialog and null if the user cancels the dialog.

      An application must pass in an array of print services to browse. The array must be non-null and non-empty. Typically an application will pass in only PrintServices capable of printing a particular document flavor.

      An application may pass in a PrintService to be initially displayed. A non-null parameter must be included in the array of browsable services. If this parameter is null a service is chosen by the implementation.

      An application may optionally pass in the flavor to be printed. If this is non-null choices presented to the user can be better validated against those supported by the services. An application must pass in a PrintRequestAttributeSet for returning user choices. On calling the PrintRequestAttributeSet may be empty, or may contain application-specified values.

      These are used to set the initial settings for the initially displayed print service. Values which are not supported by the print service are ignored. As the user browses print services, attributes and values are copied to the new display. If a user browses a print service which does not support a particular attribute-value, the default for that service is used as the new value to be copied.

      If the user cancels the dialog, the returned attributes will not reflect any changes made by the user.

      A typical basic usage of this method may be: 

      PrintService[] services = PrintServiceLookup.lookupPrintServices(
                           DocFlavor.INPUT_STREAM.JPEG, null);
PrintRequestAttributeSet attributes = new HashPrintRequestAttributeSet();
if (services.length > 0) {
   PrintService service =  ServiceUI.printDialog(null, 50, 50,
                                              services, services[0],
                                              null,
                                              attributes);
   if (service != null) {
    ... print ...
   }
}
      Parameters:
      gc - used to select screen, null means primary or default screen
      x - location of dialog including border in screen coordinates relative to the origin of gc
      y - location of dialog including border in screen coordinates relative to the origin of gc
      services - to be browsable, must be non-null
      defaultService - initial PrintService to display
      flavor - the flavor to be printed, or null
      attributes - on input is the initial application supplied preferences. This cannot be null but may be empty. On output the attributes reflect changes made by the user.
      Returns:
      print service selected by the user, or null if the user cancelled the dialog
      Throws:
      HeadlessException - if GraphicsEnvironment.isHeadless() returns true
      IllegalArgumentException - if services is null or empty, or attributes is null, or the initial PrintService is not in the list of browsable services