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package javax.print;


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);
     }
 }



/**
 * 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.
 * <p>
 * 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.
 * <p>
 * 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.
 * <p>
 * Swing UIs are preferred as they provide a more consistent {@literal L&F} and
 * can support accessibility APIs.
 * <p>
 * Example usage:
 * <pre>
 *  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);
 *      }
 *  }
 * </pre>
 */
public abstract class ServiceUIFactory {

    
Denotes a UI implemented as a Swing component. The value of the string is
the fully qualified classname : "javax.swing.JComponent".

/**
     * Denotes a UI implemented as a Swing component. The value of the string is
     * the fully qualified classname : "javax.swing.JComponent".
     */
    public static final String JCOMPONENT_UI = "javax.swing.JComponent";

    
Denotes a UI implemented as an AWT panel. The value of the string is the
fully qualified classname : "java.awt.Panel"

/**
     * Denotes a UI implemented as an AWT panel. The value of the string is the
     * fully qualified classname : "java.awt.Panel"
     */
    public static final String PANEL_UI = "java.awt.Panel";

    
Denotes a UI implemented as an AWT dialog. The value of the string is the
fully qualified classname : "java.awt.Dialog"

/**
     * Denotes a UI implemented as an AWT dialog. The value of the string is the
     * fully qualified classname : "java.awt.Dialog"
     */
    public static final String DIALOG_UI = "java.awt.Dialog";

    
Denotes a UI implemented as a Swing dialog. The value of the string is
the fully qualified classname : "javax.swing.JDialog"

/**
     * Denotes a UI implemented as a Swing dialog. The value of the string is
     * the fully qualified classname : "javax.swing.JDialog"
     */
    public static final String JDIALOG_UI = "javax.swing.JDialog";

    
Denotes a UI which performs an informative "About" role.

/**
     * Denotes a UI which performs an informative "About" role.
     */
    public static final int ABOUT_UIROLE = 1;

    
Denotes a UI which performs an administrative role.

/**
     * Denotes a UI which performs an administrative role.
     */
    public static final int ADMIN_UIROLE = 2;

    
Denotes a UI which performs the normal end user role.

/**
     * Denotes a UI which performs the normal end user role.
     */
    public static final int MAIN_UIROLE = 3;

    
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.

/**
     * 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.
     */
    public static final int RESERVED_UIROLE = 99;

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

Params:
  • 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
Throws:
  • IllegalArgumentException – if the role or ui is neither one of the
        standard ones, nor a private one supported by the factory
Returns:the UI role or null if the requested UI role is not available from this factory
/**
     * Get a UI object which may be cast to the requested UI type by the
     * application and used in its user interface.
     *
     * @param  role requested. Must be one of the standard roles or a private
     *         role supported by this factory.
     * @param  ui type in which the role is requested
     * @return the UI role or {@code 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
     */
    public abstract Object getUI(int role, String ui) ;

    
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 ("=="). 
Params:
  • role – to be looked up
Throws:
Returns:the UI types supported by this class for the specified role, null if no UIs are available for the role
/**
     * Given a UI role obtained from this factory obtain the UI types available
     * from this factory which implement this role. The returned {@code Strings}
     * should refer to the static variables defined in this class so that
     * applications can use equality of reference ("==").
     *
     * @param  role to be looked up
     * @return the UI types supported by this class for the specified role,
     *         {@code null} if no UIs are available for the role
     * @throws IllegalArgumentException is the role is a non-standard role not
     *         supported by this factory
     */
    public abstract String[] getUIClassNamesForRole(int role) ;

}