javax.print

## Class ServiceUIFactory

- java.lang.Object
- - javax.print.ServiceUIFactory

-     public abstract class ServiceUIFactory
      extends Object

  Services may optionally provide UIs which allow different styles of interaction in different roles. One role may be end-user browsing and setting of print options. Another role may be administering the print service.

  Although the Print Service API does not presently provide standardised support for administering a print service, monitoring of the print service is possible and a UI may provide for private update mechanisms.

  The basic design intent is to allow applications to lazily locate and initialize services only when needed without any API dependencies except in an environment in which they are used.

  Swing UIs are preferred as they provide a more consistent L&F and can support accessibility APIs.

  Example usage:

        ServiceUIFactory factory = printService.getServiceUIFactory();
        if (factory != null) {
            JComponent swingui = (JComponent)factory.getUI(
                                               ServiceUIFactory.MAIN_UIROLE,
                                               ServiceUIFactory.JCOMPONENT_UI);
            if (swingui != null) {
                tabbedpane.add("Custom UI", swingui);
            }
        }

- - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static int` | `ABOUT_UIROLE` | Denotes a UI which performs an informative "About" role.
    `static int` | `ADMIN_UIROLE` | Denotes a UI which performs an administrative role.
    `static String` | `DIALOG_UI` | Denotes a UI implemented as an AWT dialog.
    `static String` | `JCOMPONENT_UI` | Denotes a UI implemented as a Swing component.
    `static String` | `JDIALOG_UI` | Denotes a UI implemented as a Swing dialog.
    `static int` | `MAIN_UIROLE` | Denotes a UI which performs the normal end user role.
    `static String` | `PANEL_UI` | Denotes a UI implemented as an AWT panel.
    `static int` | `RESERVED_UIROLE` | Not a valid role but role id's greater than this may be used for private roles supported by a service.

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `ServiceUIFactory()` |

  - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `abstract Object` | `getUI(int role, String ui)` | Get a UI object which may be cast to the requested UI type by the application and used in its user interface.
    `abstract String[]` | `getUIClassNamesForRole(int role)` | Given a UI role obtained from this factory obtain the UI types available from this factory which implement this role.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### JCOMPONENT_UI

          public static final String JCOMPONENT_UI

      Denotes a UI implemented as a Swing component. The value of the String is the fully qualified classname : "javax.swing.JComponent".
      See Also:
        Constant Field Values

    - #### PANEL_UI

          public static final String PANEL_UI

      Denotes a UI implemented as an AWT panel. The value of the String is the fully qualified classname : "java.awt.Panel"
      See Also:
        Constant Field Values

    - #### DIALOG_UI

          public static final String DIALOG_UI

      Denotes a UI implemented as an AWT dialog. The value of the String is the fully qualified classname : "java.awt.Dialog"
      See Also:
        Constant Field Values

    - #### JDIALOG_UI

          public static final String JDIALOG_UI

      Denotes a UI implemented as a Swing dialog. The value of the String is the fully qualified classname : "javax.swing.JDialog"
      See Also:
        Constant Field Values

    - #### ABOUT_UIROLE

          public static final int ABOUT_UIROLE

      Denotes a UI which performs an informative "About" role.
      See Also:
        Constant Field Values

    - #### ADMIN_UIROLE

          public static final int ADMIN_UIROLE

      Denotes a UI which performs an administrative role.
      See Also:
        Constant Field Values

    - #### MAIN_UIROLE

          public static final int MAIN_UIROLE

      Denotes a UI which performs the normal end user role.
      See Also:
        Constant Field Values

    - #### RESERVED_UIROLE

          public static final int RESERVED_UIROLE

      Not a valid role but role id's greater than this may be used for private roles supported by a service. Knowledge of the function performed by this role is required to make proper use of it.
      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### ServiceUIFactory

          public ServiceUIFactory()

  - ### Method Detail

    - #### getUI

          public abstract Object getUI(int role,
                                       String ui)

      Get a UI object which may be cast to the requested UI type by the application and used in its user interface.

      Parameters:
        `role` - requested. Must be one of the standard roles or a private role supported by this factory.
        `ui` - type in which the role is requested.
      Returns:
        the UI role or null if the requested UI role is not available from this factory
      Throws:
        `IllegalArgumentException` - if the role or ui is neither one of the standard ones, nor a private one supported by the factory.

    - #### getUIClassNamesForRole

          public abstract String[] getUIClassNamesForRole(int role)

      Given a UI role obtained from this factory obtain the UI types available from this factory which implement this role. The returned Strings should refer to the static variables defined in this class so that applications can use equality of reference ("==").
      Parameters:
        `role` - to be looked up.
      Returns:
        the UI types supported by this class for the specified role, null if no UIs are available for the role.
      Throws:
        `IllegalArgumentException` - is the role is a non-standard role not supported by this factory.

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