    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_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    }