01: /* ================================================================
02: * Cewolf : Chart enabling Web Objects Framework
03: * ================================================================
04: *
05: * Project Info: http://cewolf.sourceforge.net
06: * Project Lead: Guido Laures (guido@laures.de);
07: *
08: * (C) Copyright 2002, by Guido Laures
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: */
22:
23: package de.laures.cewolf.taglib.tags;
24:
25: import javax.servlet.jsp.JspException;
26:
27: import de.laures.cewolf.ChartPostProcessor;
28: import de.laures.cewolf.taglib.util.PageUtils;
29:
30: /**
31: * Tag to define a post processor.
32: * @see ChartPostProcessor
33: * @author Guido Laures
34: */
35: public class ChartPostProcessorTag extends
36: AbstractParameterizedObjectTag {
37:
38: public int doEndTag() throws JspException {
39: ChartPostProcessor pp = null;
40: try {
41: pp = (ChartPostProcessor) getObject();
42: if (pp == null) {
43: throw new JspException(
44: "Could not find ChartEnhanncer under ID '"
45: + getId() + "'");
46: }
47: } catch (ClassCastException cce) {
48: throw new JspException("Bean under ID '" + getId()
49: + "' is of type '" + pp.getClass().getName()
50: + "'.\nType expected:"
51: + ChartPostProcessor.class.getName());
52: }
53: AbstractChartTag rt = (AbstractChartTag) PageUtils.findRoot(
54: this , pageContext);
55: rt.addChartPostProcessor((ChartPostProcessor) getObject(),
56: getParameters());
57: return doAfterEndTag(EVAL_PAGE);
58: }
59:
60: }
|