1 /*
2 * Copyright (c) 2004, Henri Yandell
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or
6 * without modification, are permitted provided that the
7 * following conditions are met:
8 *
9 * + Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
12 * + Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * + Neither the name of OSJava nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 package org.osjava.taglib.trail;
34
35 import java.io.IOException;
36 import java.io.StringWriter;
37
38 import java.util.Iterator;
39
40 import javax.servlet.ServletRequest;
41
42 import javax.servlet.jsp.JspException;
43 import javax.servlet.jsp.JspTagException;
44 import javax.servlet.jsp.JspWriter;
45 import javax.servlet.jsp.tagext.TagSupport;
46
47 // <trail:list/>
48 // <trail:list type="full"/>
49 public class ListTag extends TagSupport {
50
51 private String var;
52 private String delimiter = " -> ";
53 private String type;
54
55 public ListTag() {
56 }
57
58 public String getVar() { return this.var; }
59 public void setVar(String var) { this.var = var; }
60
61 public String getType() { return this.type; }
62 public void setType(String type) { this.type = type; }
63
64 public String getDelimiter() { return this.delimiter; }
65 public void setDelimiter(String delimiter) { this.delimiter = delimiter; }
66
67 public int doEndTag() throws JspException {
68 BreadCrumbs breadcrumbs = JspUtils.getBreadCrumbs(pageContext);
69
70 StringBuffer buffer = new StringBuffer();
71 Iterator itr = null;
72 // fix
73 if(this.type == null || "normalized".equals(this.type) ) {
74 itr = breadcrumbs.iterateNormalizedTrail();
75 } else {
76 // "full" or anything else does this
77 itr = breadcrumbs.iterateTrail();
78 }
79 while( itr.hasNext() ) {
80 BreadCrumb breadcrumb = (BreadCrumb) itr.next();
81 Object label = breadcrumb.getLabel();
82 Object url = breadcrumb.getUrl();
83 buffer.append("<a href=\"");
84 buffer.append(url);
85 buffer.append("\">");
86 buffer.append(label);
87 buffer.append("</a>");
88 buffer.append(this.delimiter);
89 }
90 String txt = buffer.toString();
91
92 if(this.var == null) {
93 JspWriter writer = pageContext.getOut();
94 try {
95 writer.print(txt);
96 } catch(IOException ioe) {
97 throw new JspException(ioe.toString());
98 }
99 } else {
100 pageContext.setAttribute(this.var, txt);
101 }
102 return EVAL_PAGE;
103 }
104
105 }
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