|
1
28
29 package com.caucho.jsp.java;
30
31 import com.caucho.xml.QName;
32
33 import javax.servlet.jsp.tagext.JspFragment  ;
34 import javax.servlet.jsp.tagext.TagAttributeInfo ;
35 import javax.servlet.jsp.tagext.VariableInfo ;
36 import java.io.IOException ;
37 import java.util.ArrayList ;
38
39
42 public class TagFileTag extends GenericTag {
43 private boolean _oldScriptingInvalid;
44 private JspBody _body;
45 private int _maxFragmentIndex;
46 private String _contextVarName;
47
48
51 public void endAttributes()
52 {
53 _oldScriptingInvalid = _parseState.isScriptingInvalid();
54 _parseState.setScriptingInvalid(true);
55 }
56
57
60 public void endElement()
61 throws Exception
62 {
63 super.endElement();
64
65 _parseState.setScriptingInvalid(_oldScriptingInvalid);
66
67 if (_children == null || _children.size() == 0)
68 return;
69
70 for (int i = 0; i < _children.size(); i++) {
71 JspNode node = _children.get(i);
72
73 if (node instanceof JspBody) {
74 if (_body != null)
75 throw error(L.l("Only one <jsp:body> is allowed as a child of a tag."));
76 _body = (JspBody) node;
77 _children.remove(i);
78 return;
79 }
80 }
81
82 for (int i = 0; i < _children.size(); i++) {
83 JspNode node = _children.get(i);
84
85 if (! (node instanceof JspAttribute)) {
86 if (_body == null) {
87 _body = new JspBody();
88 _body.setParent(this);
89 _body.setGenerator(_gen);
90 _body.endAttributes();
91 }
92
93 _body.addChild(node);
94 }
95 }
96 _body.endElement();
97 _children = null;
98 }
99
100
105 public void generateDeclaration(JspJavaWriter out)
106 throws IOException
107 {
108 super.generateDeclaration(out);
109
110
115 }
116
117
120 public boolean hasTag()
121 {
122 return super.hasTag() || _body != null && _body.hasTag();
123 }
124
127 public String getCustomTagName()
128 {
129 return null;
130 }
131
132
135 public void generatePrologue(JspJavaWriter out)
136 throws Exception
137 {
138 super.generatePrologue(out);
139
140 if (_body != null) {
141 _body.setJspFragment(true);
142 _body.generateFragmentPrologue(out);
143 }
144 }
145
146
151 public void generate(JspJavaWriter out)
152 throws Exception
153 {
154 String className = _tagInfo.getTagClassName();
155 Class cl = _tagClass;
156
157 String name = className;
158
159 String childContext = fillTagFileAttributes(out, name);
160
161 out.print(name + ".doTag(pageContext, " + childContext + ", out, ");
162 if (_body != null)
163 generateFragment(out, _body, "pageContext");
164 else
165 out.print("null");
166
167 out.println(");");
168
169 printVarDeclaration(out, VariableInfo.AT_END);
170 }
171
172 public String fillTagFileAttributes(JspJavaWriter out, String tagName)
173 throws Exception
174 {
175 _contextVarName = "_jsp_context" + _gen.uniqueId();
176
177 String name = _contextVarName;
178
179 out.println("com.caucho.jsp.PageContextWrapper " + name);
180 out.println(" = com.caucho.jsp.PageContextWrapper.create(pageContext);");
181
182 TagAttributeInfo attrs[] = _tagInfo.getAttributes();
183
184 for (int i = 0; attrs != null && i < attrs.length; i++) {
186 int p = indexOf(_attributeNames, attrs[i].getName());
187
188 if (p < 0 && attrs[i].isRequired()) {
189 throw error(L.l("required attribute `{0}' missing from <{1}>",
190 attrs[i].getName(),
191 getTagName()));
192 }
193 }
194
195 boolean isDynamic = _tagInfo.hasDynamicAttributes();
196 String mapAttribute = null;
197 String mapName = null;
198
199 if (isDynamic) {
200 TagInfoExt tagInfoImpl = (TagInfoExt) _tagInfo;
201 mapAttribute = tagInfoImpl.getDynamicAttributesName();
202 }
203
204 for (int i = 0; i < _attributeNames.size(); i++) {
206 QName attrName = _attributeNames.get(i);
207 Object value = _attributeValues.get(i);
208
209 TagAttributeInfo attribute = null;
210 int j = 0;
211 for (j = 0; attrs != null && j < attrs.length; j++) {
212 if (attrs[j].getName().equals(attrName.getName())) {
213 attribute = attrs[j];
214 break;
215 }
216 }
217
218 if (attribute == null && ! isDynamic)
219 throw error(L.l("unexpected attribute `{0}' in <{1}>",
220 attrName.getName(), getTagName()));
221
222 boolean rtexprvalue = true;
223
224 Class cl = null;
225
226 if (attribute != null) {
227 cl = _gen.loadBeanClass(attribute.getTypeName());
228
229 rtexprvalue = attribute.canBeRequestTime();
230 }
231
232 if (cl == null)
233 cl = String .class;
234
235 if (attribute == null) {
236 if (mapName == null) {
237 mapName = "_jsp_map_" + _gen.uniqueId();
238 out.println("java.util.HashMap " + mapName + " = new java.util.HashMap(8);");
239 out.println(name + ".setAttribute(\"" + mapAttribute + "\", " + mapName + ");");
240 }
241
242 out.print(mapName + ".put(\"" + attrName.getName() + "\", ");
243 }
244 else
245 out.print(name + ".setAttribute(\"" + attrName.getName() + "\", ");
246
247 if (value instanceof JspNode) {
248 JspFragmentNode frag = (JspFragmentNode) value;
249
250 if (attribute != null &&
251 attribute.getTypeName().equals(JspFragment .class.getName())) {
252 out.println(generateFragment(frag, "pageContext") + ");");
253 }
254 else
255 out.println(frag.generateValue() + ");");
256 }
257 else {
258 String convValue = generateParameterValue(cl,
259 (String ) value,
260 rtexprvalue,
261 attribute);
262
263
265 out.println(toObject(cl, convValue) + ");");
266 }
267 }
268
269 return name;
270 }
271
272 private int indexOf(ArrayList <QName> names, String name)
273 {
274 for (int i = 0; i < names.size(); i++) {
275 if (names.get(i).getName().equals(name))
276 return i;
277 }
278
279 return -1;
280 }
281
282 private String toObject(Class cl, String value)
283 {
284 if (boolean.class.equals(cl))
285 return "new Boolean(" + value + ")";
286 else if (byte.class.equals(cl))
287 return "new Byte(" + value + ")";
288 else if (short.class.equals(cl))
289 return "new Short(" + value + ")";
290 else if (int.class.equals(cl))
291 return "new Integer(" + value + ")";
292 else if (long.class.equals(cl))
293 return "new Long(" + value + ")";
294 else if (char.class.equals(cl))
295 return "new Character(" + value + ")";
296 else if (float.class.equals(cl))
297 return "new Float(" + value + ")";
298 else if (double.class.equals(cl))
299 return "new Double(" + value + ")";
300 else
301 return value;
302 }
303 }
304 |
Popular Tags |
Java API By Example, From Geeks To Geeks.