Source Code Cross Referenced for CustomPieURLGenerator.java in  » Chart » jfreechart » org » jfree » chart » urls » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Chart » jfreechart » org.jfree.chart.urls 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* ======================================
002:         * JFreeChart : a free Java chart library
003:         * ======================================
004:         *
005:         * (C) Copyright 2000-2006, by Object Refinery Limited and Contributors.
006:         *
007:         * Project Info:  http://www.jfree.org/jfreechart/index.html
008:         *
009:         * This library is free software; you can redistribute it and/or modify it 
010:         * under the terms of the GNU Lesser General Public License as published by 
011:         * the Free Software Foundation; either version 2.1 of the License, or 
012:         * (at your option) any later version.
013:         *
014:         * This library is distributed in the hope that it will be useful, but 
015:         * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016:         * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017:         * License for more details.
018:         *
019:         * You should have received a copy of the GNU Lesser General Public
020:         * License along with this library; if not, write to the Free Software
021:         * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022:         * USA.  
023:         *
024:         * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025:         * in the United States and other countries.]
026:         *
027:         * --------------------------
028:         * CustomPieURLGenerator.java
029:         * --------------------------
030:         * (C) Copyright 2004-2006, by David Basten and Contributors.
031:         *
032:         * Original Author:  David Basten;
033:         * Contributors:     -;
034:         *
035:         * $Id: CustomPieURLGenerator.java,v 1.3.2.2 2006/11/24 11:05:02 mungady Exp $
036:         *
037:         * Changes:
038:         * --------
039:         * 04-Feb-2004 : Version 1, contributed by David Basten based on 
040:         *               CustomXYURLGenerator by Richard Atkinson (added to main source
041:         *               tree on 25-May-2004);
042:         *
043:         */
044:        package org.jfree.chart.urls;
045:
046:        import java.io.Serializable;
047:        import java.util.ArrayList;
048:        import java.util.HashMap;
049:        import java.util.Iterator;
050:        import java.util.Map;
051:        import java.util.Set;
052:
053:        import org.jfree.chart.plot.MultiplePiePlot;
054:        import org.jfree.data.general.PieDataset;
055:        import org.jfree.util.PublicCloneable;
056:
057:        /**
058:         * A custom URL generator for pie charts.
059:         */
060:        public class CustomPieURLGenerator implements  PieURLGenerator,
061:                Cloneable, PublicCloneable, Serializable {
062:
063:            /** For serialization. */
064:            private static final long serialVersionUID = 7100607670144900503L;
065:
066:            /** Storage for the URLs. */
067:            private ArrayList urls;
068:
069:            /**
070:             * Creates a new <code>CustomPieURLGenerator</code> instance, initially
071:             * empty.  Call {@link #addURLs(Map)} to specify the URL fragments to be
072:             * used.
073:             */
074:            public CustomPieURLGenerator() {
075:                this .urls = new ArrayList();
076:            }
077:
078:            /**
079:             * Generates a URL fragment.
080:             *
081:             * @param dataset  the dataset (ignored).
082:             * @param key  the item key.
083:             * @param pieIndex  the pie index.
084:             *
085:             * @return A string containing the generated URL.
086:             * 
087:             * @see #getURL(Comparable, int)
088:             */
089:            public String generateURL(PieDataset dataset, Comparable key,
090:                    int pieIndex) {
091:                return getURL(key, pieIndex);
092:            }
093:
094:            /**
095:             * Returns the number of URL maps stored by the renderer.
096:             * 
097:             * @return The list count.
098:             * 
099:             * @see #addURLs(Map)
100:             */
101:            public int getListCount() {
102:                return this .urls.size();
103:            }
104:
105:            /**
106:             * Returns the number of URLs in a given map (specified by its position 
107:             * in the map list).
108:             * 
109:             * @param list  the list index (zero based).
110:             * 
111:             * @return The URL count.
112:             * 
113:             * @see #getListCount()
114:             */
115:            public int getURLCount(int list) {
116:                int result = 0;
117:                Map urlMap = (Map) this .urls.get(list);
118:                if (urlMap != null) {
119:                    result = urlMap.size();
120:                }
121:                return result;
122:            }
123:
124:            /**
125:             * Returns the URL for a section in the specified map.
126:             * 
127:             * @param key  the key.
128:             * @param mapIndex  the map index.
129:             * 
130:             * @return The URL.
131:             */
132:            public String getURL(Comparable key, int mapIndex) {
133:                String result = null;
134:                if (mapIndex < getListCount()) {
135:                    Map urlMap = (Map) this .urls.get(mapIndex);
136:                    if (urlMap != null) {
137:                        result = (String) urlMap.get(key);
138:                    }
139:                }
140:                return result;
141:            }
142:
143:            /**
144:             * Adds a map containing <code>(key, URL)</code> mappings where each
145:             * <code>key</code> is an instance of <code>Comparable</code> 
146:             * (corresponding to the key for an item in a pie dataset) and each 
147:             * <code>URL</code> is a <code>String</code> representing a URL fragment.
148:             * <br><br>
149:             * The map is appended to an internal list...you can add multiple maps
150:             * if you are working with, say, a {@link MultiplePiePlot}.
151:             * 
152:             * @param urlMap  the URLs (<code>null</code> permitted).
153:             */
154:            public void addURLs(Map urlMap) {
155:                this .urls.add(urlMap);
156:            }
157:
158:            /**
159:             * Tests if this object is equal to another.
160:             * 
161:             * @param o  the other object.
162:             * 
163:             * @return A boolean.
164:             */
165:            public boolean equals(Object o) {
166:
167:                if (o == this ) {
168:                    return true;
169:                }
170:
171:                if (o instanceof  CustomPieURLGenerator) {
172:                    CustomPieURLGenerator generator = (CustomPieURLGenerator) o;
173:                    if (getListCount() != generator.getListCount()) {
174:                        return false;
175:                    }
176:                    Set keySet;
177:                    for (int pieItem = 0; pieItem < getListCount(); pieItem++) {
178:                        if (getURLCount(pieItem) != generator
179:                                .getURLCount(pieItem)) {
180:                            return false;
181:                        }
182:                        keySet = ((HashMap) this .urls.get(pieItem)).keySet();
183:                        String key;
184:                        for (Iterator i = keySet.iterator(); i.hasNext();) {
185:                            key = (String) i.next();
186:                            if (!getURL(key, pieItem).equals(
187:                                    generator.getURL(key, pieItem))) {
188:                                return false;
189:                            }
190:                        }
191:                    }
192:                    return true;
193:                }
194:                return false;
195:            }
196:
197:            /**
198:             * Returns a clone of the generator.
199:             * 
200:             * @return A clone.
201:             * 
202:             * @throws CloneNotSupportedException if cloning is not supported.
203:             */
204:            public Object clone() throws CloneNotSupportedException {
205:                CustomPieURLGenerator urlGen = new CustomPieURLGenerator();
206:                Map map;
207:                Map newMap;
208:                String key;
209:
210:                for (Iterator i = this .urls.iterator(); i.hasNext();) {
211:                    map = (Map) i.next();
212:
213:                    newMap = new HashMap();
214:                    for (Iterator j = map.keySet().iterator(); j.hasNext();) {
215:                        key = (String) j.next();
216:                        newMap.put(key, map.get(key));
217:                    }
218:
219:                    urlGen.addURLs(newMap);
220:                    newMap = null;
221:                }
222:
223:                return urlGen;
224:            }
225:
226:        }
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