001: /*
002: * $Header: /export/home/cvsroot/MyPersonalizerRepository/MyPersonalizer/Subsystems/Kernel/Sources/es/udc/mypersonalizer/kernel/util/general/PersonalizationHelper.java,v 1.1.1.1 2004/03/25 12:08:38 fbellas Exp $
003: * $Revision: 1.1.1.1 $
004: * $Date: 2004/03/25 12:08:38 $
005: *
006: * =============================================================================
007: *
008: * Copyright (c) 2003, The MyPersonalizer Development Group
009: * (http://www.tic.udc.es/~fbellas/mypersonalizer/index.html) at
010: * University Of A Coruna
011: * All rights reserved.
012: *
013: * Redistribution and use in source and binary forms, with or without
014: * modification, are permitted provided that the following conditions are met:
015: *
016: * - Redistributions of source code must retain the above copyright notice,
017: * this list of conditions and the following disclaimer.
018: *
019: * - Redistributions in binary form must reproduce the above copyright notice,
020: * this list of conditions and the following disclaimer in the documentation
021: * and/or other materials provided with the distribution.
022: *
023: * - Neither the name of the University Of A Coruna nor the names of its
024: * contributors may be used to endorse or promote products derived from
025: * this software without specific prior written permission.
026: *
027: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
028: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
029: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
030: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
031: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
032: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
033: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
034: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
035: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
036: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
037: * POSSIBILITY OF SUCH DAMAGE.
038: *
039: */
040:
041: package es.udc.mypersonalizer.kernel.util.general;
042:
043: import es.udc.mypersonalizer.kernel.model.metainfo.MetaService;
044: import es.udc.mypersonalizer.kernel.model.metainfo.MetaServiceRegistrySingleton;
045:
046: /**
047: * Helper class for miscellanea data. It provides the system with a way to know:
048: * <ul>
049: * <li>Whether a service is personalizable or not, by checking
050: * the existance of meta-information for it.</li>
051: * <li>Whether there exist buttons with state in the system or not,
052: * by checking the existance of meta-information for the
053: * service buttons state.</li>
054: * </ul>
055: *
056: * @author Daniel Fernandez
057: * @since 1.0
058: */
059: public class PersonalizationHelper {
060:
061: /** Avoids the instantiation of this class. */
062: private PersonalizationHelper() {
063: }
064:
065: /**
066: * Tells whether a service is personalizable or not by checking its
067: * meta-info.
068: *
069: * @param serviceIdentifier the identifier of the service to be examined
070: * @return a boolean telling whether the service is personalizable.
071: */
072: public static boolean isPersonalizable(String serviceIdentifier) {
073:
074: MetaServiceRegistrySingleton metaServiceRegistrySingleton = MetaServiceRegistrySingleton
075: .getInstance();
076:
077: MetaService metaService = metaServiceRegistrySingleton
078: .getMetaService(serviceIdentifier);
079:
080: if (metaService == null) {
081: return false;
082: } else {
083: return true;
084: }
085:
086: }
087:
088: /**
089: * Tells whether there are buttons with state in the system or not.
090: *
091: * @return a boolean telling about the existance of statefull buttons.
092: */
093: public static boolean buttonsHaveState() {
094:
095: MetaServiceRegistrySingleton metaServiceRegistrySingleton = MetaServiceRegistrySingleton
096: .getInstance();
097:
098: MetaService metaService = metaServiceRegistrySingleton
099: .getServiceButtonsStateMetaService();
100:
101: if (metaService == null) {
102: return false;
103: } else {
104: return true;
105: }
106:
107: }
108:
109: }
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