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14
15 package com.sun.facelets.util;
16
17 import java.beans.BeanInfo  ;
18 import java.beans.Introspector ;
19 import java.beans.PropertyDescriptor ;
20 import java.io.ByteArrayOutputStream ;
21 import java.io.FileNotFoundException ;
22 import java.io.IOException ;
23 import java.io.InputStream ;
24 import java.io.PrintWriter ;
25 import java.io.StringWriter ;
26 import java.io.Writer ;
27 import java.lang.reflect.Method ;
28 import java.text.DateFormat ;
29 import java.util.Arrays ;
30 import java.util.Collection ;
31 import java.util.Date ;
32 import java.util.Iterator ;
33 import java.util.Map ;
34 import java.util.SortedMap ;
35 import java.util.TreeMap ;
36 import java.util.logging.Logger ;
37
38 import javax.el.Expression;
39 import javax.faces.component.UIComponent;
40 import javax.faces.component.UIViewRoot;
41 import javax.faces.context.ExternalContext;
42 import javax.faces.context.FacesContext;
43 import javax.faces.el.MethodBinding;
44 import javax.faces.el.ValueBinding;
45
46 public final class DevTools {
47
48 private final static String TS = "<";
49
50 private static final String ERROR_TEMPLATE = "META-INF/rsc/facelet-dev-error.xml";
51
52 private static String [] ERROR_PARTS;
53
54 private static final String DEBUG_TEMPLATE = "META-INF/rsc/facelet-dev-debug.xml";
55
56 private static String [] DEBUG_PARTS;
57
58 public DevTools() {
59 super();
60 }
61
62 public static void main(String [] argv) throws Exception {
63 DevTools.init();
64 }
65
66 private static void init() throws IOException {
67 if (ERROR_PARTS == null) {
68 ERROR_PARTS = splitTemplate(ERROR_TEMPLATE);
69 }
70
71 if (DEBUG_PARTS == null) {
72 DEBUG_PARTS = splitTemplate(DEBUG_TEMPLATE);
73 }
74 }
75
76 private static String [] splitTemplate(String rsc) throws IOException {
77 InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(rsc);
78 if (is == null) {
79 throw new FileNotFoundException (rsc);
80 }
81 ByteArrayOutputStream baos = new ByteArrayOutputStream ();
82 byte[] buff = new byte[512];
83 int read;
84 while ((read = is.read(buff)) != -1) {
85 baos.write(buff, 0, read);
86 }
87 String str = baos.toString();
88 return str.split("@@");
89 }
90
91 public static void debugHtml(Writer writer, FacesContext faces, Exception e) throws IOException {
92 init();
93 Date now = new Date ();
94 for (int i = 0; i < ERROR_PARTS.length; i++) {
95 if ("message".equals(ERROR_PARTS[i])) {
96 String msg = e.getMessage();
97 if (msg != null) {
98 writer.write(msg.replaceAll("<", TS));
99 } else {
100 writer.write(e.getClass().getName());
101 }
102 } else if ("trace".equals(ERROR_PARTS[i])) {
103 writeException(writer, e);
104 } else if ("now".equals(ERROR_PARTS[i])) {
105 writer.write(DateFormat.getDateTimeInstance().format(now));
106 } else if ("tree".equals(ERROR_PARTS[i])) {
107 writeComponent(writer, faces.getViewRoot());
108 } else if ("vars".equals(ERROR_PARTS[i])) {
109 writeVariables(writer, faces);
110 } else {
111 writer.write(ERROR_PARTS[i]);
112 }
113 }
114 }
115
116 private static void writeException(Writer writer, Exception e) throws IOException {
117 StringWriter str = new StringWriter (256);
118 PrintWriter pstr = new PrintWriter (str);
119 e.printStackTrace(pstr);
120 pstr.close();
121 writer.write(str.toString().replaceAll("<", TS));
122 }
123
124 public static void debugHtml(Writer writer, FacesContext faces) throws IOException {
125 init();
126 Date now = new Date ();
127 for (int i = 0; i < DEBUG_PARTS.length; i++) {
128 if ("message".equals(DEBUG_PARTS[i])) {
129 writer.write(faces.getViewRoot().getViewId());
130 } else if ("now".equals(DEBUG_PARTS[i])) {
131 writer.write(DateFormat.getDateTimeInstance().format(now));
132 } else if ("tree".equals(DEBUG_PARTS[i])) {
133 writeComponent(writer, faces.getViewRoot());
134 } else if ("vars".equals(DEBUG_PARTS[i])) {
135 writeVariables(writer, faces);
136 } else {
137 writer.write(DEBUG_PARTS[i]);
138 }
139 }
140 }
141
142 private static void writeVariables(Writer writer, FacesContext faces) throws IOException {
143 ExternalContext ctx = faces.getExternalContext();
144 writeVariables(writer, ctx.getRequestParameterMap(), "Request Parameters");
145 writeVariables(writer, ctx.getRequestMap(), "Request Attributes");
146 if (ctx.getSession(false) != null) {
147 writeVariables(writer, ctx.getSessionMap(), "Session Attributes");
148 }
149 writeVariables(writer, ctx.getApplicationMap(), "Application Attributes");
150 }
151
152 private static void writeVariables(Writer writer, Map vars, String caption) throws IOException {
153 writer.write("<table><caption>");
154 writer.write(caption);
155 writer.write("</caption><thead><tr><th style=\"width: 10%; \">Name</th><th style=\"width: 90%; \">Value</th></tr></thead><tbody>");
156 boolean written = false;
157 if (!vars.isEmpty()) {
158 SortedMap map = new TreeMap (vars);
159 Map.Entry entry = null;
160 String key = null;
161 for (Iterator itr = map.entrySet().iterator(); itr.hasNext(); ) {
162 entry = (Map.Entry ) itr.next();
163 key = entry.getKey().toString();
164 if (key.indexOf('.') == -1) {
165 writer.write("<tr><td>");
166 writer.write(key.replaceAll("<", TS));
167 writer.write("</td><td>");
168 writer.write(entry.getValue().toString().replaceAll("<", TS));
169 writer.write("</td></tr>");
170 written = true;
171 }
172 }
173 }
174 if (!written) {
175 writer.write("<tr><td colspan=\"2\"><em>None</em></td></tr>");
176 }
177 writer.write("</tbody></table>");
178 }
179
180 private static void writeComponent(Writer writer, UIComponent c) throws IOException {
181 writer.write("<dl><dt");
182 if (isText(c)) {
183 writer.write(" class=\"uicText\"");
184 }
185 writer.write(">");
186
187 boolean hasChildren = c.getChildCount() > 0 || c.getFacets().size() > 0;
188
189 writeStart(writer, c, hasChildren);
190 writer.write("</dt>");
191 if (hasChildren) {
192 if (c.getFacets().size() > 0) {
193 Map.Entry entry;
194 for (Iterator itr = c.getFacets().entrySet().iterator(); itr.hasNext(); ) {
195 entry = (Map.Entry ) itr.next();
196 writer.write("<dd class=\"uicFacet\">");
197 writer.write("<span>");
198 writer.write((String ) entry.getKey());
199 writer.write("</span>");
200 writeComponent(writer, (UIComponent) entry.getValue());
201 writer.write("</dd>");
202 }
203 }
204 if (c.getChildCount() > 0) {
205 for (Iterator itr = c.getChildren().iterator(); itr.hasNext(); ) {
206 writer.write("<dd>");
207 writeComponent(writer, (UIComponent) itr.next());
208 writer.write("</dd>");
209 }
210 }
211 writer.write("<dt>");
212 writeEnd(writer, c);
213 writer.write("</dt>");
214 }
215 writer.write("</dl>");
216 }
217
218 private static void writeEnd(Writer writer, UIComponent c) throws IOException {
219 if (!isText(c)) {
220 writer.write(TS);
221 writer.write('/');
222 writer.write(getName(c));
223 writer.write('>');
224 }
225 }
226
227 private final static String [] IGNORE = new String [] { "parent", "rendererType" };
228
229 private static void writeAttributes(Writer writer, UIComponent c) {
230 try {
231 BeanInfo info = Introspector.getBeanInfo(c.getClass());
232 PropertyDescriptor [] pd = info.getPropertyDescriptors();
233 Method m = null;
234 Object v = null;
235 String str = null;
236 for (int i = 0; i < pd.length; i++) {
237 if (pd[i].getWriteMethod() != null && Arrays.binarySearch(IGNORE, pd[i].getName()) < 0) {
238 m = pd[i].getReadMethod();
239 try {
240 v = m.invoke(c, null);
241 if (v != null) {
242 if (v instanceof Collection || v instanceof Map || v instanceof Iterator ) {
243 continue;
244 }
245 writer.write(" ");
246 writer.write(pd[i].getName());
247 writer.write("=\"");
248 if (v instanceof Expression) {
249 str = ((Expression) v).getExpressionString();
250 } else if (v instanceof ValueBinding) {
251 str = ((ValueBinding) v).getExpressionString();
252 } else if (v instanceof MethodBinding) {
253 str = ((MethodBinding) v).getExpressionString();
254 } else {
255 str = v.toString();
256 }
257 writer.write(str.replaceAll("<", TS));
258 writer.write("\"");
259 }
260 } catch (Exception e) {
261 }
263 }
264 }
265
266 ValueBinding binding = c.getValueBinding("binding");
267 if (binding != null) {
268 writer.write(" binding=\"");
269 writer.write(binding.getExpressionString().replaceAll("<", TS));
270 writer.write("\"");
271 }
272 } catch (Exception e) {
273 }
275 }
276
277 private static void writeStart(Writer writer, UIComponent c, boolean children) throws IOException {
278 if (isText(c)) {
279 String str = c.toString().trim();
280 writer.write(str.replaceAll("<", TS));
281 } else {
282 writer.write(TS);
283 writer.write(getName(c));
284 writeAttributes(writer, c);
285 if (children) {
286 writer.write('>');
287 } else {
288 writer.write("/>");
289 }
290 }
291 }
292
293 private static String getName(UIComponent c) {
294 String nm = c.getClass().getName();
295 return nm.substring(nm.lastIndexOf('.') + 1);
296 }
297
298 private static boolean isText(UIComponent c) {
299 return (c.getClass().getName().startsWith("com.sun.facelets.compiler"));
300 }
301
302 }
303 |
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