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1
29
30 package com.caucho.jsp.java;
31
32 import com.caucho.jsp.JspParseException;
33 import com.caucho.jsp.cfg.TldVariable;
34 import com.caucho.vfs.WriteStream;
35 import com.caucho.xml.QName;
36
37 import java.io.IOException  ;
38 import java.util.ArrayList ;
39
40
43 public class JspDoBody extends JspNode {
44 private static final QName VAR = new QName("var");
45 private static final QName VAR_READER = new QName("varReader");
46 private static final QName SCOPE = new QName("scope");
47
48 private String _var;
49 private String _varReader;
50 private String _scope;
51
52
55 public void addAttribute(QName name, String value)
56 throws JspParseException
57 {
58 if (VAR.equals(name))
59 _var = value;
60 else if (VAR_READER.equals(name))
61 _varReader = value;
62 else if (SCOPE.equals(name))
63 _scope = value;
64 else
65 throw error(L.l("'{0}' is an unknown attribute for jsp:doBody.",
66 name.getName()));
67 }
68
69
72 public void endAttributes()
73 throws JspParseException
74 {
75 if (! _gen.getParseState().isTag())
76 throw error(L.l("'{0}' is only allowed in .tag files. Attribute directives are not allowed in normal JSP files.",
77 getTagName()));
78
79 if (_var != null && _varReader != null)
80 throw error(L.l("'var' and 'varReader' cannot both be set in jsp:doBody."));
81
82 if (_scope != null && _var == null && _varReader == null)
83 throw error(L.l("jsp:doBody requires a 'var' or 'varReader' if 'scope' is set."));
84 }
85
86
91 public void printXml(WriteStream os)
92 throws IOException
93 {
94 os.print("<jsp:do-body");
95 os.print(" jsp:id=\"" + _gen.generateJspId() + "\"");
96 if (_var != null)
97 os.print(" var=\"" + _var + "\"");
98 os.print(">");
99
100 os.print("</jsp:do-body>");
101 }
102
103
106 public void generate(JspJavaWriter out)
107 throws Exception
108 {
109 String name = "_jsp_frag_" + _gen.uniqueId();
110
111 if (_gen.hasScripting())
112 out.println("javax.servlet.jsp.tagext.JspFragment " + name + " = getJspBody();");
113 else
114 out.println("javax.servlet.jsp.tagext.JspFragment " + name + " = _jspBody;");
115
116 out.println("if (" + name + " != null) {");
117 out.pushDepth();
118
119 JavaTagGenerator gen = (JavaTagGenerator) _gen;
120 ArrayList <TldVariable> vars = gen.getVariables();
121
122 for (int i = 0; i < vars.size(); i++) {
123 TldVariable var = vars.get(i);
124
125 if (var.getScope().equals("AT_END"))
126 continue;
127
128 String srcName = var.getNameGiven();
129 String dstName = srcName;
130
131 if (srcName == null) {
132 srcName = var.getAlias();
133 dstName = var.getNameFromAttribute();
134 dstName = "_jsp_var_from_attribute_" + i;
135 }
136 else
137 dstName = "\"" + dstName + "\"";
138
139 out.print("_jsp_parentContext.setAttribute(" + dstName + ", ");
140 out.println("pageContext.getAttribute(\"" + srcName + "\"));");
141 }
142
143
149
150 if (_var != null) {
151 out.print(getScope() + ".setAttribute(\"" + _var + "\", ");
152 out.println("pageContext.invoke(" + name + "));");
153 }
154 else if (_varReader != null) {
155 out.print(getScope() + ".setAttribute(\"" + _varReader + "\", ");
156 out.println("pageContext.invokeReader(" + name + "));");
157 }
158 else {
159 out.println(name + ".invoke(null);");
160 }
161
162
193
194 out.popDepth();
195 out.println("}");
196 }
197
198 private String getScope()
199 throws JspParseException
200 {
201 String context = null;
202 if (_scope == null || _scope.equals("page"))
203 return "pageContext";
204 else if (_scope.equals("request")) {
205 return "pageContext.getRequest()";
206 }
207 else if (_scope.equals("session")) {
208 return "pageContext.getSession()";
209 }
210 else if (_scope.equals("application")) {
211 return "pageContext.getApplication()";
212 }
213 else
214 throw error(L.l("Unknown scope '{0}' in <jsp:doBody>. Scope must be 'page', 'request', 'session', or 'application'.", _scope));
215 }
216 }
217
218 |
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