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package org.apache.tapestry.markup; |
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import org.apache.hivemind.ApplicationRuntimeException; |
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import org.apache.hivemind.util.Defense; |
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import org.apache.tapestry.IMarkupWriter; |
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import org.apache.tapestry.NestedMarkupWriter; |
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import java.io.PrintWriter; |
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import java.util.*; |
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public class MarkupWriterImpl implements IMarkupWriter |
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{ |
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private PrintWriter _writer; |
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private MarkupFilter _filter; |
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54 | 0 | private boolean _openTag = false; |
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62 | 0 | private boolean _emptyTag = false; |
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private String _contentType; |
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private List _activeElementStack; |
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79 | 0 | private final Map _attrMap = new LinkedHashMap(); |
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public MarkupWriterImpl(String contentType, PrintWriter writer, MarkupFilter filter) |
82 | 0 | { |
83 | 0 | Defense.notNull(contentType, "contentType"); |
84 | 0 | Defense.notNull(writer, "writer"); |
85 | 0 | Defense.notNull(filter, "filter"); |
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|
87 | 0 | _contentType = contentType; |
88 | 0 | _writer = writer; |
89 | 0 | _filter = filter; |
90 | 0 | } |
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public void attribute(String name, int value) |
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{ |
94 | 0 | checkTagOpen(); |
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|
96 | 0 | _attrMap.put(name, new DefaultAttribute(String.valueOf(value), false)); |
97 | 0 | } |
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public void attribute(String name, boolean value) |
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{ |
101 | 0 | checkTagOpen(); |
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103 | 0 | _attrMap.put(name, new DefaultAttribute(String.valueOf(value), false)); |
104 | 0 | } |
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public void attribute(String name, String value) |
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{ |
108 | 0 | attribute(name, value, false); |
109 | 0 | } |
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public void attribute(String name, String value, boolean raw) |
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{ |
113 | 0 | checkTagOpen(); |
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115 | 0 | _attrMap.put(name, new DefaultAttribute(value, raw)); |
116 | 0 | } |
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public void appendAttribute(String name, boolean value) |
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{ |
120 | 0 | checkTagOpen(); |
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122 | 0 | appendAttribute(name, String.valueOf(value)); |
123 | 0 | } |
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public void appendAttribute(String name, int value) |
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{ |
127 | 0 | checkTagOpen(); |
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129 | 0 | appendAttribute(name, String.valueOf(value)); |
130 | 0 | } |
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public void appendAttribute(String name, String value) |
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{ |
134 | 0 | checkTagOpen(); |
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136 | 0 | DefaultAttribute attr = (DefaultAttribute)_attrMap.get(name); |
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|
138 | 0 | if (attr == null) |
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{ |
140 | 0 | attr = new DefaultAttribute(value, false); |
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|
142 | 0 | _attrMap.put(name, attr); |
143 | 0 | return; |
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} |
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146 | 0 | attr.append(value); |
147 | 0 | } |
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public void appendAttributeRaw(String name, String value) |
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{ |
151 | 0 | checkTagOpen(); |
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153 | 0 | DefaultAttribute attr = (DefaultAttribute)_attrMap.get(name); |
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155 | 0 | if (attr == null) { |
156 | 0 | attr = new DefaultAttribute(value, true); |
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158 | 0 | _attrMap.put(name, attr); |
159 | 0 | return; |
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} |
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162 | 0 | attr.setRaw(true); |
163 | 0 | attr.append(value); |
164 | 0 | } |
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public Attribute getAttribute(String name) |
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{ |
168 | 0 | checkTagOpen(); |
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170 | 0 | return (Attribute)_attrMap.get(name); |
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} |
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public boolean hasAttribute(String name) |
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{ |
175 | 0 | checkTagOpen(); |
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177 | 0 | return _attrMap.containsKey(name); |
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} |
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public void clearAttributes() |
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{ |
182 | 0 | checkTagOpen(); |
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184 | 0 | _attrMap.clear(); |
185 | 0 | } |
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public Attribute removeAttribute(String name) |
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{ |
189 | 0 | checkTagOpen(); |
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191 | 0 | return (Attribute)_attrMap.remove(name); |
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} |
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private void maybePrintFiltered(char[] data, int offset, int length, boolean raw, boolean isAttribute) |
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{ |
200 | 0 | if (data == null || length <= 0) |
201 | 0 | return; |
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|
203 | 0 | if (raw) |
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{ |
205 | 0 | _writer.write(data, offset, length); |
206 | 0 | return; |
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} |
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|
209 | 0 | _filter.print(_writer, data, offset, length, isAttribute); |
210 | 0 | } |
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public void attributeRaw(String name, String value) |
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{ |
214 | 0 | attribute(name, value, true); |
215 | 0 | } |
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public void begin(String name) |
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{ |
219 | 0 | if (_openTag) |
220 | 0 | closeTag(); |
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222 | 0 | push(name); |
223 | |
|
224 | 0 | _writer.print('<'); |
225 | 0 | _writer.print(name); |
226 | |
|
227 | 0 | _openTag = true; |
228 | 0 | _emptyTag = false; |
229 | 0 | } |
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public void beginEmpty(String name) |
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{ |
233 | 0 | if (_openTag) |
234 | 0 | closeTag(); |
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236 | 0 | _writer.print('<'); |
237 | 0 | _writer.print(name); |
238 | |
|
239 | 0 | _openTag = true; |
240 | 0 | _emptyTag = true; |
241 | 0 | } |
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public boolean checkError() |
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{ |
245 | 0 | return _writer.checkError(); |
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} |
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public void close() |
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{ |
250 | 0 | if (_openTag) |
251 | 0 | closeTag(); |
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|
255 | 0 | while (!stackEmpty()) |
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{ |
257 | 0 | _writer.print("</"); |
258 | 0 | _writer.print(pop()); |
259 | 0 | _writer.print('>'); |
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} |
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|
262 | 0 | _writer.close(); |
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|
264 | 0 | _writer = null; |
265 | 0 | _filter = null; |
266 | 0 | _activeElementStack = null; |
267 | 0 | } |
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public void closeTag() |
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{ |
271 | 0 | flushAttributes(); |
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|
273 | 0 | if (_emptyTag) |
274 | 0 | _writer.print(" /"); |
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|
276 | 0 | _writer.print('>'); |
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|
278 | 0 | _openTag = false; |
279 | 0 | _emptyTag = false; |
280 | 0 | } |
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void flushAttributes() |
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{ |
288 | 0 | if (_attrMap.size() > 0) { |
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|
290 | 0 | Iterator it = _attrMap.keySet().iterator(); |
291 | 0 | while (it.hasNext()) { |
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|
293 | 0 | String key = (String)it.next(); |
294 | 0 | DefaultAttribute attr = (DefaultAttribute)_attrMap.get(key); |
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|
296 | 0 | attr.print(key, _writer, _filter); |
297 | 0 | } |
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299 | 0 | _attrMap.clear(); |
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} |
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302 | 0 | } |
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public void comment(String value) |
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{ |
306 | 0 | if (_openTag) |
307 | 0 | closeTag(); |
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|
309 | 0 | _writer.print("<!-- "); |
310 | 0 | _writer.print(value); |
311 | 0 | _writer.println(" -->"); |
312 | 0 | } |
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public void end() |
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{ |
316 | 0 | if (_openTag) |
317 | 0 | closeTag(); |
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|
319 | 0 | if (stackEmpty()) |
320 | 0 | throw new ApplicationRuntimeException(MarkupMessages.endWithEmptyStack()); |
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322 | 0 | _writer.print("</"); |
323 | 0 | _writer.print(pop()); |
324 | 0 | _writer.print('>'); |
325 | 0 | } |
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public void end(String name) |
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{ |
329 | 0 | if (_openTag) |
330 | 0 | closeTag(); |
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|
332 | 0 | if (_activeElementStack == null || !_activeElementStack.contains(name)) |
333 | 0 | throw new ApplicationRuntimeException(MarkupMessages.elementNotOnStack( |
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name, |
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_activeElementStack)); |
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while (true) |
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{ |
339 | 0 | String tagName = pop(); |
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|
341 | 0 | _writer.print("</"); |
342 | 0 | _writer.print(tagName); |
343 | 0 | _writer.print('>'); |
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|
345 | 0 | if (tagName.equals(name)) |
346 | 0 | break; |
347 | 0 | } |
348 | 0 | } |
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public void flush() |
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{ |
352 | 0 | _writer.flush(); |
353 | 0 | } |
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public NestedMarkupWriter getNestedWriter() |
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{ |
357 | 0 | return new NestedMarkupWriterImpl(this, _filter); |
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} |
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public void print(char[] data, int offset, int length) |
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{ |
362 | 0 | print(data, offset, length, false); |
363 | 0 | } |
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public void printRaw(char[] buffer, int offset, int length) |
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{ |
367 | 0 | print(buffer, offset, length, true); |
368 | 0 | } |
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public void print(char[] buffer, int offset, int length, boolean raw) |
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{ |
372 | 0 | if (_openTag) |
373 | 0 | closeTag(); |
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|
375 | 0 | maybePrintFiltered(buffer, offset, length, raw, false); |
376 | 0 | } |
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public void print(String value) |
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{ |
380 | 0 | print(value, false); |
381 | 0 | } |
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public void printRaw(String value) |
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{ |
385 | 0 | print(value, true); |
386 | 0 | } |
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public void print(String value, boolean raw) |
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{ |
390 | 0 | if (value == null || value.length() == 0) |
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{ |
392 | 0 | print(null, 0, 0, raw); |
393 | 0 | return; |
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} |
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|
396 | 0 | char[] buffer = value.toCharArray(); |
397 | |
|
398 | 0 | print(buffer, 0, buffer.length, raw); |
399 | 0 | } |
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public void print(char value) |
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{ |
403 | 0 | char[] data = new char[] |
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{ value }; |
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|
406 | 0 | print(data, 0, 1); |
407 | 0 | } |
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public void print(int value) |
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{ |
411 | 0 | if (_openTag) |
412 | 0 | closeTag(); |
413 | |
|
414 | 0 | _writer.print(value); |
415 | 0 | } |
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public void println() |
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{ |
419 | 0 | if (_openTag) |
420 | 0 | closeTag(); |
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|
422 | 0 | _writer.println(); |
423 | 0 | } |
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public String getContentType() |
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{ |
427 | 0 | return _contentType; |
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} |
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private void checkTagOpen() |
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{ |
432 | 0 | if (!_openTag) |
433 | 0 | throw new IllegalStateException(MarkupMessages.tagNotOpen()); |
434 | 0 | } |
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private void push(String name) |
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{ |
438 | 0 | if (_activeElementStack == null) |
439 | 0 | _activeElementStack = new ArrayList(); |
440 | |
|
441 | 0 | _activeElementStack.add(name); |
442 | 0 | } |
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private String pop() |
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{ |
446 | 0 | int lastIndex = _activeElementStack.size() - 1; |
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|
448 | 0 | return (String) _activeElementStack.remove(lastIndex); |
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} |
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private boolean stackEmpty() |
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{ |
453 | 0 | return _activeElementStack == null || _activeElementStack.isEmpty(); |
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} |
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} |