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1
22
23 package de.laures.cewolf.taglib.tags;
24
25 import java.io.IOException  ;
26 import java.io.Writer ;
27 import java.util.Iterator ;
28
29 import javax.servlet.http.HttpServletRequest ;
30 import javax.servlet.http.HttpServletResponse ;
31 import javax.servlet.jsp.JspException ;
32
33 import org.apache.commons.logging.Log;
34 import org.apache.commons.logging.LogFactory;
35 import org.jfree.chart.ChartRenderingInfo;
36 import org.jfree.chart.entity.CategoryItemEntity;
37 import org.jfree.chart.entity.ChartEntity;
38 import org.jfree.chart.entity.LegendItemEntity;
39 import org.jfree.chart.entity.PieSectionEntity;
40 import org.jfree.chart.entity.XYItemEntity;
41 import org.jfree.data.category.CategoryDataset;
42 import org.jfree.data.general.Dataset;
43 import org.jfree.data.general.PieDataset;
44 import org.jfree.data.xy.XYDataset;
45
46 import de.laures.cewolf.CewolfException;
47 import de.laures.cewolf.Configuration;
48 import de.laures.cewolf.links.CategoryItemLinkGenerator;
49 import de.laures.cewolf.links.LinkGenerator;
50 import de.laures.cewolf.links.PieSectionLinkGenerator;
51 import de.laures.cewolf.links.XYItemLinkGenerator;
52 import de.laures.cewolf.taglib.util.BrowserDetection;
53 import de.laures.cewolf.taglib.util.PageUtils;
54 import de.laures.cewolf.tooltips.CategoryToolTipGenerator;
55 import de.laures.cewolf.tooltips.PieToolTipGenerator;
56 import de.laures.cewolf.tooltips.ToolTipGenerator;
57 import de.laures.cewolf.tooltips.XYToolTipGenerator;
58
59
64 public class ChartMapTag extends CewolfTag {
65
66 private static final long serialVersionUID = -3742340487378471159L;
67
68 private static final Log LOG = LogFactory.getLog(ChartMapTag.class);
69
70 ToolTipGenerator toolTipGenerator = null;
71 LinkGenerator linkGenerator = null;
72
73 boolean useJFreeChartLinkGenerator = false;
75 boolean useJFreeChartTooltipGenerator = false;
77
78 public int doStartTag() throws JspException {
79 Mapped root = (Mapped) PageUtils.findRoot(this, pageContext);
81 root.enableMapping();
82 String chartId = ((CewolfRootTag) root).getChartId();
83 try {
84 Dataset dataset = PageUtils.getDataset(chartId, pageContext);
85 Writer out = pageContext.getOut();
86 final boolean isIE = BrowserDetection.isIE((HttpServletRequest ) pageContext.getRequest());
87 if (hasToolTips()) {
88 enableToolTips(out, isIE);
89 }
90 out.write("<MAP name=\"" + chartId + "\">\n");
91 ChartRenderingInfo info = (ChartRenderingInfo) root.getRenderingInfo();
92 Iterator entities = info.getEntityCollection().iterator();
93 while (entities.hasNext()) {
94 ChartEntity ce = (ChartEntity) entities.next();
95 out.write("\n<AREA shape=\"" + ce.getShapeType() + "\" ");
96 out.write("COORDS=\"" + ce.getShapeCoords() + "\" ");
97 if (ce instanceof XYItemEntity)
98 {
99 dataset = ((XYItemEntity)ce).getDataset();
100 }
101 if (!(ce instanceof LegendItemEntity)) {
102 if (hasToolTips()) {
103 writeOutToolTip(dataset, out, isIE, ce);
104 }
105 if (hasLinks()) {
106 writeOutLink(linkGenerator, dataset, out, ce);
107 }
108 }
109 out.write(">");
110 }
111 } catch (IOException ioex) {
112 log.error(ioex);
113 throw new JspException (ioex.getMessage());
114 } catch (CewolfException cwex) {
115 log.error(cwex);
116 throw new JspException (cwex.getMessage());
117 }
118 return EVAL_PAGE;
119 }
120
121 public int doEndTag() throws JspException {
122 Writer out = pageContext.getOut();
124 try {
125 out.write("</MAP>");
126 } catch (IOException ioex) {
127 log.error(ioex);
128 throw new JspException (ioex.getMessage());
129 }
130 return doAfterEndTag(EVAL_PAGE);
131 }
132
133 public void reset() {
134 this.toolTipGenerator = null;
135 this.linkGenerator = null;
136 }
137
138 public void writeOutLink(Object linkGen, Dataset dataset, Writer out, ChartEntity ce) throws IOException {
139 final String link = generateLink(dataset, ce);
140
141 if (null != link) {
142 final String href = ((HttpServletResponse ) pageContext.getResponse()).encodeURL(link);
143 out.write("HREF=\"" + href + "\"");
144 }
145 }
146
147 private void writeOutToolTip(Dataset dataset, Writer out, final boolean isIE, ChartEntity ce) throws IOException , JspException {
148 String toolTip = generateToolTip(dataset, ce);
149 if (null != toolTip) {
150 if (!isIE) {
151 out.write("ONMOUSEOVER=\"return overlib('"
152 + toolTip + "', WIDTH, '20');\" ONMOUSEOUT=\"return nd();\" ");
153 } else {
154 out.write("ALT=\"" + toolTip + "\" ");
155 }
156 }
157 }
158
159 public void enableToolTips(Writer out, final boolean isIE) throws IOException {
160 if (!PageUtils.isToolTipsEnabled(pageContext) && !isIE) {
161 Configuration config = Configuration.getInstance(pageContext.getServletContext());
162 String overLibURL = ChartImgTag.fixAbsolutURL(config.getOverlibURL(), pageContext);
163 out.write("<script language=\"JavaScript\" SRC=\"");
164 out.write(overLibURL + "\"><!-- overLIB (c) Erik Bosrup --></script>\n");
165 out.write("<div id=\"overDiv\" style=\"position:absolute; visibility:hidden; z-index:1000;\"></div>\n");
166 PageUtils.setToolTipsEnabled(pageContext);
167 }
168 }
169
170 private String generateLink(Dataset dataset, ChartEntity ce) {
171 String link = null;
172 if (useJFreeChartLinkGenerator) {
173 link = ce.getURLText();
174 } else if (linkGenerator instanceof CategoryItemLinkGenerator || linkGenerator instanceof XYItemLinkGenerator || linkGenerator instanceof PieSectionLinkGenerator) {
175 if (linkGenerator instanceof CategoryItemLinkGenerator) {
176 if (ce instanceof CategoryItemEntity) {
177 CategoryItemEntity catEnt = (CategoryItemEntity) ce;
178 link = ((CategoryItemLinkGenerator) linkGenerator).generateLink(dataset, catEnt.getSeries(), catEnt.getCategory());
179 }
180 }
181 if (linkGenerator instanceof XYItemLinkGenerator) {
182 if (ce instanceof XYItemEntity) {
183 XYItemEntity xyEnt = (XYItemEntity) ce;
184 link = ((XYItemLinkGenerator) linkGenerator).generateLink(dataset, xyEnt.getSeriesIndex(), xyEnt.getItem());
185 } else {
186 LOG.debug("Link entity skipped, not XYItemEntity.class:" + ce);
188 }
189 }
190 if (linkGenerator instanceof PieSectionLinkGenerator) {
191 if (ce instanceof PieSectionEntity) {
192 PieSectionEntity pieEnt = (PieSectionEntity) ce;
193 link = ((PieSectionLinkGenerator) linkGenerator).generateLink(dataset, pieEnt.getSectionKey());
194 }
195 }
196 }
197 return link;
198 }
199
200 private String generateToolTip(Dataset dataset, ChartEntity ce) throws JspException {
201 String tooltip = null;
202 if (useJFreeChartTooltipGenerator) {
203 tooltip = ce.getToolTipText();
204 } else if (toolTipGenerator instanceof CategoryToolTipGenerator || toolTipGenerator instanceof XYToolTipGenerator || toolTipGenerator instanceof PieToolTipGenerator) {
205 if (toolTipGenerator instanceof CategoryToolTipGenerator) {
206 if (ce instanceof CategoryItemEntity) {
207 CategoryItemEntity catEnt = (CategoryItemEntity) ce;
208 tooltip = ((CategoryToolTipGenerator) toolTipGenerator).generateToolTip((CategoryDataset) dataset, catEnt.getSeries(), catEnt.getCategoryIndex());
209 }
210 }
211
212 if (toolTipGenerator instanceof XYToolTipGenerator) {
213 if (ce instanceof XYItemEntity) {
214 XYItemEntity xyEnt = (XYItemEntity) ce;
215 tooltip = ((XYToolTipGenerator) toolTipGenerator).generateToolTip((XYDataset) dataset, xyEnt.getSeriesIndex(), xyEnt.getItem());
216 }
217 }
218
219 if (toolTipGenerator instanceof PieToolTipGenerator) {
220 if (ce instanceof PieSectionEntity) {
221 PieSectionEntity pieEnt = (PieSectionEntity) ce;
222 PieDataset ds = (PieDataset) dataset;
223 final int index = pieEnt.getSectionIndex();
224 tooltip = ((PieToolTipGenerator) toolTipGenerator).generateToolTip(ds, ds.getKey(index), index);
225 }
226 }
227 } else {
228 throw new JspException (
230 "TooltipgGenerator of class " + toolTipGenerator.getClass().getName() + " does not implement the appropriate TooltipGenerator interface for entity type " + ce.getClass().getName());
231 }
232 return tooltip;
233 }
234
235 private boolean hasToolTips() throws JspException {
236 if (toolTipGenerator!=null && useJFreeChartTooltipGenerator) {
237 throw new JspException ("Can't have both tooltipGenerator and useJFreeChartTooltipGenerator parameters specified!");
238 }
239 return toolTipGenerator != null || useJFreeChartTooltipGenerator;
240 }
241
242 public void setTooltipgeneratorid(String id) {
243 this.toolTipGenerator = (ToolTipGenerator) pageContext.findAttribute(id);
244 }
245
246 private boolean hasLinks() throws JspException {
247 if (linkGenerator!=null && useJFreeChartLinkGenerator) {
248 throw new JspException ("Can't have both linkGenerator and useJFreeChartLinkGenerator parameters specified!");
249 }
250 return linkGenerator != null || useJFreeChartLinkGenerator;
251 }
252
253 public void setLinkgeneratorid(String id) {
254 this.linkGenerator = (LinkGenerator) pageContext.findAttribute(id);
255 }
256
257
261 public void setUseJFreeChartLinkGenerator(boolean useJFreeChartLinkGenerator) {
262 this.useJFreeChartLinkGenerator = useJFreeChartLinkGenerator;
263 }
264
268 public void setUseJFreeChartTooltipGenerator(boolean useJFreeChartTooltipGenerator) {
269 this.useJFreeChartTooltipGenerator = useJFreeChartTooltipGenerator;
270 }
271
272 }
273 |
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