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16 package org.ajaxtags.tags;
17
18 import java.io.IOException  ;
19
20 import javax.servlet.jsp.JspException ;
21 import javax.servlet.jsp.JspWriter ;
22 import javax.servlet.jsp.tagext.TagSupport ;
23
24 import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager;
25
26
32 public class AjaxTreeTag extends TagSupport {
33 private String baseUrl;
34
35 private String styleId;
36
37 private String preFunction;
38
39 private String postFunction;
40
41 private String errorFunction;
42
43 private String parser;
44
45 private String collapsedClass;
46
47 private String expandedClass;
48
49 private String parameters;
50
51 private String nodeClass;
52
53 private String treeClass;
54
55 public String getBaseUrl() {
56 return baseUrl;
57 }
58
59 public void setBaseUrl(String baseUrl) {
60 this.baseUrl = baseUrl;
61 }
62
63 public String getTreeClass() {
64 return treeClass;
65 }
66
67 public void setTreeClass(String treeClass) {
68 this.treeClass = treeClass;
69 }
70
71 public String getNodeClass() {
72 return nodeClass;
73 }
74
75 public void setNodeClass(String nodeClass) {
76 this.nodeClass = nodeClass;
77 }
78
79 public String getParameters() {
80 return parameters;
81 }
82
83 public void setParameters(String parameters) {
84 this.parameters = parameters;
85 }
86
87 @Override
88 public int doStartTag() throws JspException {
89 this.baseUrl = (String ) ExpressionEvaluatorManager.evaluate("baseUrl",
91 this.baseUrl, String .class, this, super.pageContext);
92 this.parameters = (String ) ExpressionEvaluatorManager.evaluate(
93 "parameters", this.parameters, String .class, this,
94 super.pageContext);
95
96 if (this.collapsedClass != null)
98 this.collapsedClass = (String ) ExpressionEvaluatorManager.evaluate(
99 "collapsedClass", this.collapsedClass, String .class, this,
100 super.pageContext);
101 if (this.nodeClass != null)
102 this.nodeClass = (String ) ExpressionEvaluatorManager.evaluate(
103 "nodeClass", this.nodeClass, String .class, this,
104 super.pageContext);
105 if (this.expandedClass != null)
106 this.expandedClass = (String ) ExpressionEvaluatorManager.evaluate(
107 "expandedClass", this.expandedClass, String .class, this,
108 super.pageContext);
109 if (this.treeClass != null)
110 this.treeClass = (String ) ExpressionEvaluatorManager.evaluate(
111 "treeClass", this.treeClass, String .class, this,
112 super.pageContext);
113 return SKIP_BODY;
114 }
115
116 public String getStyleId() {
117 return styleId;
118 }
119
120 public void setStyleId(String treeStyleId) {
121 this.styleId = treeStyleId;
122 }
123
124 public String getErrorFunction() {
125 return errorFunction;
126 }
127
128 public void setErrorFunction(String errorFunction) {
129 this.errorFunction = errorFunction;
130 }
131
132 public String getParser() {
133 return parser;
134 }
135
136 public void setParser(String parser) {
137 this.parser = parser;
138 }
139
140 public String getPostFunction() {
141 return postFunction;
142 }
143
144 public void setPostFunction(String postFunction) {
145 this.postFunction = postFunction;
146 }
147
148 public String getPreFunction() {
149 return preFunction;
150 }
151
152 public void setPreFunction(String preFunction) {
153 this.preFunction = preFunction;
154 }
155
156 public String getCollapsedClass() {
157 return collapsedClass;
158 }
159
160 public void setCollapsedClass(String collapsedClass) {
161 this.collapsedClass = collapsedClass;
162 }
163
164 public String getExpandedClass() {
165 return expandedClass;
166 }
167
168 public void setExpandedClass(String expandedClass) {
169 this.expandedClass = expandedClass;
170 }
171
172 @Override
173 public int doEndTag() throws JspException {
174 OptionsBuilder options = new OptionsBuilder();
175 options.add("target", "elem", false);
176
177 if (this.collapsedClass != null)
178 options.add("collapsedClass", this.collapsedClass, true);
179 if (this.parameters != null)
180 options.add("parameters", this.parameters, true);
181 if (this.expandedClass != null)
182 options.add("expandedClass", this.expandedClass, true);
183 if (this.treeClass != null)
184 options.add("treeClass", this.treeClass, true);
185 if (this.nodeClass != null)
186 options.add("nodeClass", this.nodeClass, true);
187 if (this.preFunction != null)
188 options.add("preFunction", this.preFunction, false);
189 if (this.postFunction != null)
190 options.add("postFunction", this.postFunction, false);
191 if (this.errorFunction != null)
192 options.add("errorFunction", this.errorFunction, false);
193 if (this.parser != null)
194 options.add("parser", this.parser, false);
195
196 StringBuffer script = new StringBuffer ();
197 script.append("<div id=\"");
198 script.append(this.styleId);
199 script.append("\"></div>\n");
200 script.append("<script type=\"text/javascript\">\n");
201 script
202 .append("window.toggleTreeNode = function(elem, url, params) {\n");
203
204 script.append("var aj_").append(this.styleId);
205
206 script.append(" = new AjaxJspTag.Tree(url, {\n").append(
207 options.toString()).append("});\n").append("}\n\n").append(
208 "addOnLoadEvent(function() {window.toggleTreeNode('").append(
209 styleId).append("', '").append(this.baseUrl).append("', null")
210 .append(");});\n").append("</script>\n\n");
211 JspWriter writer = pageContext.getOut();
212 try {
213 writer.println(script);
214 } catch (IOException e) {
215 throw new JspException (e.getMessage());
216 }
217 return EVAL_PAGE;
218 }
219
220 @Override
221 public void release() {
222 baseUrl = null;
223 styleId = null;
224 preFunction = null;
225 postFunction = null;
226 errorFunction = null;
227 parser = null;
228 collapsedClass = null;
229 expandedClass = null;
230 parameters = null;
231 nodeClass = null;
232 treeClass = null;
233 super.release();
234 }
235 }
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