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16 package org.apache.myfaces.wap.renderkit;
17
18 import java.util.*;
19 import java.io.Writer  ;
20
21 import javax.faces.context.ResponseWriter;
22
23 import org.apache.commons.logging.Log;
24 import org.apache.commons.logging.LogFactory;
25 import org.apache.myfaces.renderkit.html.util.HTMLEncoder;
26
27
36
37 public class WmlResponseWriterImpl extends ResponseWriter {
38 private static Log log = LogFactory.getLog(WmlResponseWriterImpl.class);
39
40 private static final String DEFAUL_CONTENT_TYPE = "text/vnd.wap.wml";
41 private static final String DEFAULT_CHARACTER_ENCODING = "UTF-8";
42
43 private Writer writer;
44 private String contentType;
45 private String characterEncoding;
46 private String startElementName;
47 private boolean startTagOpen;
48
49 private static final Set s_emptyHtmlElements = new HashSet();
50 static {
51 s_emptyHtmlElements.add("img");
52 s_emptyHtmlElements.add("postfield");
53 }
54
55
56 public WmlResponseWriterImpl(Writer writer, String contentType, String characterEncoding) {
57 log.debug("created object " + this.getClass().getName());
58 this.writer = writer;
59 this.contentType = contentType;
60 this.characterEncoding = characterEncoding;
61
62 if (contentType == null) {
63 log.info("Content type is null, using default value: " + DEFAUL_CONTENT_TYPE);
64 this.contentType = DEFAUL_CONTENT_TYPE;
65 }
66
67 if (characterEncoding == null) {
68 log.info("Character encoding is null, using default value: " + DEFAULT_CHARACTER_ENCODING);
69 this.characterEncoding = DEFAULT_CHARACTER_ENCODING;
70 }
71 }
72
73 public ResponseWriter cloneWithWriter(Writer writer) {
74 WmlResponseWriterImpl newWriter = new WmlResponseWriterImpl(writer, getContentType(), getCharacterEncoding());
75 return(newWriter);
76 }
77
78 public void startElement(String name, javax.faces.component.UIComponent uIComponent) throws java.io.IOException {
79 if (name == null) {
80 throw new NullPointerException ("elementName name must not be null");
81 }
82
83 closeStartTagIfNecessary();
84 writer.write('<');
85 writer.write(name);
86 startElementName = name;
87 startTagOpen = true;
88 }
89
90 public void endElement(String name) throws java.io.IOException {
91 if (name == null) {
92 throw new NullPointerException ("elementName name must not be null");
93 }
94
95 if (log.isWarnEnabled()) {
96 if (startElementName != null && !name.equals(startElementName)) {
97 log.warn("WML nesting warning on closing " + name + ": element " + startElementName + " not explicitly closed");
98 }
99 }
100
101 if(startTagOpen) {
102 writer.write(" />");
104 startTagOpen = false;
105 }
106 else {
107 writer.write("</");
108 writer.write(name);
109 writer.write('>');
110 }
111
112 startElementName = null;
113 }
114
115 public void writeText(Object value, String componentPropertyName) throws java.io.IOException {
116 if (value == null) {
117 throw new NullPointerException ("text name must not be null");
118 }
119
120 closeStartTagIfNecessary();
121 if(value == null)
122 return;
123
124 String strValue = value.toString(); writer.write(strValue);
126 }
127
128 public void writeText(char cbuf[], int off, int len) throws java.io.IOException {
129 if (cbuf == null) {
130 throw new NullPointerException ("cbuf name must not be null");
131 }
132 if (cbuf.length < off + len) {
133 throw new IndexOutOfBoundsException ((off + len) + " > " + cbuf.length);
134 }
135
136 closeStartTagIfNecessary();
137
138 writer.write(cbuf, off, len);
139 }
140
141 public void writeComment(Object value) throws java.io.IOException {
142 if (value == null) {
143 throw new NullPointerException ("comment name must not be null");
144 }
145
146 closeStartTagIfNecessary();
147 writer.write("<!--");
148 writer.write(value.toString()); writer.write("-->");
150 }
151
152 public void writeAttribute(String name, Object value, String componentPropertyName) throws java.io.IOException {
153 if (name == null) {
154 throw new NullPointerException ("attributeName name must not be null");
155 }
156 if (!startTagOpen) {
157 throw new IllegalStateException ("Must be called before the start element is closed (attribute '" + name + "')");
158 }
159
160 if (value instanceof Boolean ) {
161 if (((Boolean )value).booleanValue()) {
162 writer.write(' ');
164 writer.write(name);
165 writer.write("=\"");
166 writer.write(name);
167 writer.write('"');
168 }
169 }
170 else {
171 String strValue = value.toString(); writer.write(' ');
173 writer.write(name);
174 writer.write("=\"");
175 writer.write(HTMLEncoder.encode(strValue, false, false));
176 writer.write('"');
177 }
178 }
179
180 public String getContentType() {
181 return contentType;
182 }
183
184 public String getCharacterEncoding() {
185 return characterEncoding;
186 }
187
188 public void startDocument() throws java.io.IOException {
189 }
191
192 public void endDocument() throws java.io.IOException {
193 flush();
194 writer.flush();
195 }
196
197 public void writeURIAttribute(String name, Object value, String componentPropertyName) throws java.io.IOException {
198 if (name == null) {
199 throw new NullPointerException ("attributeName name must not be null");
200 }
201 if (!startTagOpen) {
202 throw new IllegalStateException ("Must be called before the start element is closed (attribute '" + name + "')");
203 }
204
205 String strValue = value.toString(); writer.write(' ');
207 writer.write(name);
208 writer.write("=\"" + strValue + "\"");
209 }
210
211 private void closeStartTagIfNecessary() throws java.io.IOException {
212 if (startTagOpen) {
213 if (s_emptyHtmlElements.contains(startElementName.toLowerCase())) {
214 writer.write(" />");
215 startElementName = null;
218 }
219 else {
220 writer.write('>');
221 }
222 startTagOpen = false;
223 }
224 }
225
226 public void flush() throws java.io.IOException {
227 closeStartTagIfNecessary();
231 }
232
233 public void write(char cbuf[], int off, int len) throws java.io.IOException {
234 closeStartTagIfNecessary();
235 writer.write(cbuf, off, len);
236 }
237
238 public void write(int c) throws java.io.IOException {
239 closeStartTagIfNecessary();
240 writer.write(c);
241 }
242
243 public void write(char cbuf[]) throws java.io.IOException {
244 closeStartTagIfNecessary();
245 writer.write(cbuf);
246 }
247
248 public void close() throws java.io.IOException {
249 if (startTagOpen) {
250 writer.write(" />");
252 }
253 writer.close();
254 }
255
256 }
257 |
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