/*

 * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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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.

 * <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 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".

     */

    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"

     */

    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"

     */

    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"

     */

    public static final String JDIALOG_UI = "javax.swing.JDialog";

    /**

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

     */

    public static final int ABOUT_UIROLE = 1;

    /**

     * 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.

     */

    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.

     */

    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.

     * <P>

     * @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 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

     * ("==").

     * @param role to be looked up.

     * @return 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.

     */

    public abstract String[] getUIClassNamesForRole(int role) ;

}