001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/portal/context/StyleList.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.portal.context;
037
038 import java.util.HashMap;
039
040 /**
041 * encapsulates a StyleList as defined by the OGC Web Map Context specification
042 *
043 * @version $Revision: 18195 $
044 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
045 */
046 public class StyleList {
047 private HashMap<String, Style> styles = new HashMap<String, Style>();
048
049 private Style current = null;
050
051 /**
052 * Creates a new StyleList object.
053 *
054 * @param styles
055 * @throws ContextException if the given styles are <code>null</code> or empty.
056 */
057 public StyleList( Style[] styles ) throws ContextException {
058 setStyles( styles );
059 }
060
061 /**
062 * returns an array of all styles known by a layer
063 *
064 * @return all styles
065 */
066 public Style[] getStyles() {
067 Style[] fr = new Style[styles.size()];
068 return styles.values().toArray( fr );
069 }
070
071 /**
072 * sets alla styles known by a layer
073 *
074 * @param styles
075 *
076 * @throws ContextException
077 */
078 public void setStyles( Style[] styles )
079 throws ContextException {
080 if ( ( styles == null ) || ( styles.length == 0 ) ) {
081 throw new ContextException( "at least one style must be defined for a layer" );
082 }
083
084 this.styles.clear();
085
086 for ( int i = 0; i < styles.length; i++ ) {
087 if ( styles[i].isCurrent() ) {
088 current = styles[i];
089 }
090 this.styles.put( styles[i].getName(), styles[i] );
091 }
092 }
093
094 /**
095 * returns the current style
096 *
097 * @return current style
098 */
099 public Style getCurrentStyle() {
100 return current;
101 }
102
103 /**
104 *
105 *
106 * @param name
107 *
108 * @return named style
109 */
110 public Style getStyle( String name ) {
111 return styles.get( name );
112 }
113
114 /**
115 *
116 *
117 * @param style
118 */
119 public void addStyle( Style style ) {
120 if ( style.isCurrent() ) {
121 current.setCurrent( false );
122 current = style;
123 }
124 styles.put( style.getName(), style );
125 }
126
127 /**
128 *
129 *
130 * @param name
131 *
132 * @return removed style
133 */
134 public Style removeStyle( String name ) {
135 return styles.remove( name );
136 }
137
138 /**
139 *
140 */
141 public void clear() {
142 styles.clear();
143 }
144
145 }