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| 1 | /* | ||
| 2 | * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | package javax.swing.text.html; | ||
| 26 | |||
| 27 | import java.awt.font.TextAttribute; | ||
| 28 | import java.util.*; | ||
| 29 | import java.net.URL; | ||
| 30 | import java.net.MalformedURLException; | ||
| 31 | import java.io.*; | ||
| 32 | import javax.swing.*; | ||
| 33 | import javax.swing.event.*; | ||
| 34 | import javax.swing.text.*; | ||
| 35 | import javax.swing.undo.*; | ||
| 36 | import sun.swing.SwingUtilities2; | ||
| 37 | import static sun.swing.SwingUtilities2.IMPLIED_CR; | ||
| 38 | |||
| 39 | /** | ||
| 40 | * A document that models HTML. The purpose of this model is to | ||
| 41 | * support both browsing and editing. As a result, the structure | ||
| 42 | * described by an HTML document is not exactly replicated by default. | ||
| 43 | * The element structure that is modeled by default, is built by the | ||
| 44 | * class <code>HTMLDocument.HTMLReader</code>, which implements the | ||
| 45 | * <code>HTMLEditorKit.ParserCallback</code> protocol that the parser | ||
| 46 | * expects. To change the structure one can subclass | ||
| 47 | * <code>HTMLReader</code>, and reimplement the method {@link | ||
| 48 | * #getReader(int)} to return the new reader implementation. The | ||
| 49 | * documentation for <code>HTMLReader</code> should be consulted for | ||
| 50 | * the details of the default structure created. The intent is that | ||
| 51 | * the document be non-lossy (although reproducing the HTML format may | ||
| 52 | * result in a different format). | ||
| 53 | * | ||
| 54 | * <p>The document models only HTML, and makes no attempt to store | ||
| 55 | * view attributes in it. The elements are identified by the | ||
| 56 | * <code>StyleContext.NameAttribute</code> attribute, which should | ||
| 57 | * always have a value of type <code>HTML.Tag</code> that identifies | ||
| 58 | * the kind of element. Some of the elements (such as comments) are | ||
| 59 | * synthesized. The <code>HTMLFactory</code> uses this attribute to | ||
| 60 | * determine what kind of view to build.</p> | ||
| 61 | * | ||
| 62 | * <p>This document supports incremental loading. The | ||
| 63 | * <code>TokenThreshold</code> property controls how much of the parse | ||
| 64 | * is buffered before trying to update the element structure of the | ||
| 65 | * document. This property is set by the <code>EditorKit</code> so | ||
| 66 | * that subclasses can disable it.</p> | ||
| 67 | * | ||
| 68 | * <p>The <code>Base</code> property determines the URL against which | ||
| 69 | * relative URLs are resolved. By default, this will be the | ||
| 70 | * <code>Document.StreamDescriptionProperty</code> if the value of the | ||
| 71 | * property is a URL. If a <BASE> tag is encountered, the base | ||
| 72 | * will become the URL specified by that tag. Because the base URL is | ||
| 73 | * a property, it can of course be set directly.</p> | ||
| 74 | * | ||
| 75 | * <p>The default content storage mechanism for this document is a gap | ||
| 76 | * buffer (<code>GapContent</code>). Alternatives can be supplied by | ||
| 77 | * using the constructor that takes a <code>Content</code> | ||
| 78 | * implementation.</p> | ||
| 79 | * | ||
| 80 | * <h2>Modifying HTMLDocument</h2> | ||
| 81 | * | ||
| 82 | * <p>In addition to the methods provided by Document and | ||
| 83 | * StyledDocument for mutating an HTMLDocument, HTMLDocument provides | ||
| 84 | * a number of convenience methods. The following methods can be used | ||
| 85 | * to insert HTML content into an existing document.</p> | ||
| 86 | * | ||
| 87 | * <ul> | ||
| 88 | * <li>{@link #setInnerHTML(Element, String)}</li> | ||
| 89 | * <li>{@link #setOuterHTML(Element, String)}</li> | ||
| 90 | * <li>{@link #insertBeforeStart(Element, String)}</li> | ||
| 91 | * <li>{@link #insertAfterStart(Element, String)}</li> | ||
| 92 | * <li>{@link #insertBeforeEnd(Element, String)}</li> | ||
| 93 | * <li>{@link #insertAfterEnd(Element, String)}</li> | ||
| 94 | * </ul> | ||
| 95 | * | ||
| 96 | * <p>The following examples illustrate using these methods. Each | ||
| 97 | * example assumes the HTML document is initialized in the following | ||
| 98 | * way:</p> | ||
| 99 | * | ||
| 100 | * <pre> | ||
| 101 | * JEditorPane p = new JEditorPane(); | ||
| 102 | * p.setContentType("text/html"); | ||
| 103 | * p.setText("..."); // Document text is provided below. | ||
| 104 | * HTMLDocument d = (HTMLDocument) p.getDocument(); | ||
| 105 | * </pre> | ||
| 106 | * | ||
| 107 | * <p>With the following HTML content:</p> | ||
| 108 | * | ||
| 109 | * <pre> | ||
| 110 | * <html> | ||
| 111 | * <head> | ||
| 112 | * <title>An example HTMLDocument</title> | ||
| 113 | * <style type="text/css"> | ||
| 114 | * div { background-color: silver; } | ||
| 115 | * ul { color: red; } | ||
| 116 | * </style> | ||
| 117 | * </head> | ||
| 118 | * <body> | ||
| 119 | * <div id="BOX"> | ||
| 120 | * <p>Paragraph 1</p> | ||
| 121 | * <p>Paragraph 2</p> | ||
| 122 | * </div> | ||
| 123 | * </body> | ||
| 124 | * </html> | ||
| 125 | * </pre> | ||
| 126 | * | ||
| 127 | * <p>All the methods for modifying an HTML document require an {@link | ||
| 128 | * Element}. Elements can be obtained from an HTML document by using | ||
| 129 | * the method {@link #getElement(Element e, Object attribute, Object | ||
| 130 | * value)}. It returns the first descendant element that contains the | ||
| 131 | * specified attribute with the given value, in depth-first order. | ||
| 132 | * For example, <code>d.getElement(d.getDefaultRootElement(), | ||
| 133 | * StyleConstants.NameAttribute, HTML.Tag.P)</code> returns the first | ||
| 134 | * paragraph element.</p> | ||
| 135 | * | ||
| 136 | * <p>A convenient shortcut for locating elements is the method {@link | ||
| 137 | * #getElement(String)}; returns an element whose <code>ID</code> | ||
| 138 | * attribute matches the specified value. For example, | ||
| 139 | * <code>d.getElement("BOX")</code> returns the <code>DIV</code> | ||
| 140 | * element.</p> | ||
| 141 | * | ||
| 142 | * <p>The {@link #getIterator(HTML.Tag t)} method can also be used for | ||
| 143 | * finding all occurrences of the specified HTML tag in the | ||
| 144 | * document.</p> | ||
| 145 | * | ||
| 146 | * <h3>Inserting elements</h3> | ||
| 147 | * | ||
| 148 | * <p>Elements can be inserted before or after the existing children | ||
| 149 | * of any non-leaf element by using the methods | ||
| 150 | * <code>insertAfterStart</code> and <code>insertBeforeEnd</code>. | ||
| 151 | * For example, if <code>e</code> is the <code>DIV</code> element, | ||
| 152 | * <code>d.insertAfterStart(e, "<ul><li>List | ||
| 153 | * Item</li></ul>")</code> inserts the list before the first | ||
| 154 | * paragraph, and <code>d.insertBeforeEnd(e, "<ul><li>List | ||
| 155 | * Item</li></ul>")</code> inserts the list after the last | ||
| 156 | * paragraph. The <code>DIV</code> block becomes the parent of the | ||
| 157 | * newly inserted elements.</p> | ||
| 158 | * | ||
| 159 | * <p>Sibling elements can be inserted before or after any element by | ||
| 160 | * using the methods <code>insertBeforeStart</code> and | ||
| 161 | * <code>insertAfterEnd</code>. For example, if <code>e</code> is the | ||
| 162 | * <code>DIV</code> element, <code>d.insertBeforeStart(e, | ||
| 163 | * "<ul><li>List Item</li></ul>")</code> inserts the list | ||
| 164 | * before the <code>DIV</code> element, and <code>d.insertAfterEnd(e, | ||
| 165 | * "<ul><li>List Item</li></ul>")</code> inserts the list | ||
| 166 | * after the <code>DIV</code> element. The newly inserted elements | ||
| 167 | * become siblings of the <code>DIV</code> element.</p> | ||
| 168 | * | ||
| 169 | * <h3>Replacing elements</h3> | ||
| 170 | * | ||
| 171 | * <p>Elements and all their descendants can be replaced by using the | ||
| 172 | * methods <code>setInnerHTML</code> and <code>setOuterHTML</code>. | ||
| 173 | * For example, if <code>e</code> is the <code>DIV</code> element, | ||
| 174 | * <code>d.setInnerHTML(e, "<ul><li>List | ||
| 175 | * Item</li></ul>")</code> replaces all children paragraphs with | ||
| 176 | * the list, and <code>d.setOuterHTML(e, "<ul><li>List | ||
| 177 | * Item</li></ul>")</code> replaces the <code>DIV</code> element | ||
| 178 | * itself. In latter case the parent of the list is the | ||
| 179 | * <code>BODY</code> element. | ||
| 180 | * | ||
| 181 | * <h3>Summary</h3> | ||
| 182 | * | ||
| 183 | * <p>The following table shows the example document and the results | ||
| 184 | * of various methods described above.</p> | ||
| 185 | * | ||
| 186 | * <table border=1 cellspacing=0> | ||
| 187 | * <tr> | ||
| 188 | * <th>Example</th> | ||
| 189 | * <th><code>insertAfterStart</code></th> | ||
| 190 | * <th><code>insertBeforeEnd</code></th> | ||
| 191 | * <th><code>insertBeforeStart</code></th> | ||
| 192 | * <th><code>insertAfterEnd</code></th> | ||
| 193 | * <th><code>setInnerHTML</code></th> | ||
| 194 | * <th><code>setOuterHTML</code></th> | ||
| 195 | * </tr> | ||
| 196 | * <tr valign="top"> | ||
| 197 | * <td nowrap="nowrap"> | ||
| 198 | * <div style="background-color: silver;"> | ||
| 199 | * <p>Paragraph 1</p> | ||
| 200 | * <p>Paragraph 2</p> | ||
| 201 | * </div> | ||
| 202 | * </td> | ||
| 203 | * <!--insertAfterStart--> | ||
| 204 | * <td nowrap="nowrap"> | ||
| 205 | * <div style="background-color: silver;"> | ||
| 206 | * <ul style="color: red;"> | ||
| 207 | * <li>List Item</li> | ||
| 208 | * </ul> | ||
| 209 | * <p>Paragraph 1</p> | ||
| 210 | * <p>Paragraph 2</p> | ||
| 211 | * </div> | ||
| 212 | * </td> | ||
| 213 | * <!--insertBeforeEnd--> | ||
| 214 | * <td nowrap="nowrap"> | ||
| 215 | * <div style="background-color: silver;"> | ||
| 216 | * <p>Paragraph 1</p> | ||
| 217 | * <p>Paragraph 2</p> | ||
| 218 | * <ul style="color: red;"> | ||
| 219 | * <li>List Item</li> | ||
| 220 | * </ul> | ||
| 221 | * </div> | ||
| 222 | * </td> | ||
| 223 | * <!--insertBeforeStart--> | ||
| 224 | * <td nowrap="nowrap"> | ||
| 225 | * <ul style="color: red;"> | ||
| 226 | * <li>List Item</li> | ||
| 227 | * </ul> | ||
| 228 | * <div style="background-color: silver;"> | ||
| 229 | * <p>Paragraph 1</p> | ||
| 230 | * <p>Paragraph 2</p> | ||
| 231 | * </div> | ||
| 232 | * </td> | ||
| 233 | * <!--insertAfterEnd--> | ||
| 234 | * <td nowrap="nowrap"> | ||
| 235 | * <div style="background-color: silver;"> | ||
| 236 | * <p>Paragraph 1</p> | ||
| 237 | * <p>Paragraph 2</p> | ||
| 238 | * </div> | ||
| 239 | * <ul style="color: red;"> | ||
| 240 | * <li>List Item</li> | ||
| 241 | * </ul> | ||
| 242 | * </td> | ||
| 243 | * <!--setInnerHTML--> | ||
| 244 | * <td nowrap="nowrap"> | ||
| 245 | * <div style="background-color: silver;"> | ||
| 246 | * <ul style="color: red;"> | ||
| 247 | * <li>List Item</li> | ||
| 248 | * </ul> | ||
| 249 | * </div> | ||
| 250 | * </td> | ||
| 251 | * <!--setOuterHTML--> | ||
| 252 | * <td nowrap="nowrap"> | ||
| 253 | * <ul style="color: red;"> | ||
| 254 | * <li>List Item</li> | ||
| 255 | * </ul> | ||
| 256 | * </td> | ||
| 257 | * </tr> | ||
| 258 | * </table> | ||
| 259 | * | ||
| 260 | * <p><strong>Warning:</strong> Serialized objects of this class will | ||
| 261 | * not be compatible with future Swing releases. The current | ||
| 262 | * serialization support is appropriate for short term storage or RMI | ||
| 263 | * between applications running the same version of Swing. As of 1.4, | ||
| 264 | * support for long term storage of all JavaBeans<sup><font | ||
| 265 | * size="-2">TM</font></sup> has been added to the | ||
| 266 | * <code>java.beans</code> package. Please see {@link | ||
| 267 | * java.beans.XMLEncoder}.</p> | ||
| 268 | * | ||
| 269 | * @author Timothy Prinzing | ||
| 270 | * @author Scott Violet | ||
| 271 | * @author Sunita Mani | ||
| 272 | */ | ||
| 273 | public class HTMLDocument extends DefaultStyledDocument { | ||
| 274 | /** | ||
| 275 | * Constructs an HTML document using the default buffer size | ||
| 276 | * and a default <code>StyleSheet</code>. This is a convenience | ||
| 277 | * method for the constructor | ||
| 278 | * <code>HTMLDocument(Content, StyleSheet)</code>. | ||
| 279 | */ | ||
| 280 | public HTMLDocument() { | ||
| 281 | this(new GapContent(BUFFER_SIZE_DEFAULT), new StyleSheet()); | ||
| 282 | } | ||
| 283 | |||
| 284 | /** | ||
| 285 | * Constructs an HTML document with the default content | ||
| 286 | * storage implementation and the specified style/attribute | ||
| 287 | * storage mechanism. This is a convenience method for the | ||
| 288 | * constructor | ||
| 289 | * <code>HTMLDocument(Content, StyleSheet)</code>. | ||
| 290 | * | ||
| 291 | * @param styles the styles | ||
| 292 | */ | ||
| 293 | public HTMLDocument(StyleSheet styles) { | ||
| 294 | this(new GapContent(BUFFER_SIZE_DEFAULT), styles); | ||
| 295 | } | ||
| 296 | |||
| 297 | /** | ||
| 298 | * Constructs an HTML document with the given content | ||
| 299 | * storage implementation and the given style/attribute | ||
| 300 | * storage mechanism. | ||
| 301 | * | ||
| 302 | * @param c the container for the content | ||
| 303 | * @param styles the styles | ||
| 304 | */ | ||
| 305 | public HTMLDocument(Content c, StyleSheet styles) { | ||
| 306 | super(c, styles); | ||
| 307 | } | ||
| 308 | |||
| 309 | /** | ||
| 310 | * Fetches the reader for the parser to use when loading the document | ||
| 311 | * with HTML. This is implemented to return an instance of | ||
| 312 | * <code>HTMLDocument.HTMLReader</code>. | ||
| 313 | * Subclasses can reimplement this | ||
| 314 | * method to change how the document gets structured if desired. | ||
| 315 | * (For example, to handle custom tags, or structurally represent character | ||
| 316 | * style elements.) | ||
| 317 | * | ||
| 318 | * @param pos the starting position | ||
| 319 | * @return the reader used by the parser to load the document | ||
| 320 | */ | ||
| 321 | public HTMLEditorKit.ParserCallback getReader(int pos) { | ||
| 322 | Object desc = getProperty(Document.StreamDescriptionProperty); | ||
| 323 | if (desc instanceof URL) { | ||
| 324 | setBase((URL)desc); | ||
| 325 | } | ||
| 326 | HTMLReader reader = new HTMLReader(pos); | ||
| 327 | return reader; | ||
| 328 | } | ||
| 329 | |||
| 330 | /** | ||
| 331 | * Returns the reader for the parser to use to load the document | ||
| 332 | * with HTML. This is implemented to return an instance of | ||
| 333 | * <code>HTMLDocument.HTMLReader</code>. | ||
| 334 | * Subclasses can reimplement this | ||
| 335 | * method to change how the document gets structured if desired. | ||
| 336 | * (For example, to handle custom tags, or structurally represent character | ||
| 337 | * style elements.) | ||
| 338 | * <p>This is a convenience method for | ||
| 339 | * <code>getReader(int, int, int, HTML.Tag, TRUE)</code>. | ||
| 340 | * | ||
| 341 | * @param popDepth the number of <code>ElementSpec.EndTagTypes</code> | ||
| 342 | * to generate before inserting | ||
| 343 | * @param pushDepth the number of <code>ElementSpec.StartTagTypes</code> | ||
| 344 | * with a direction of <code>ElementSpec.JoinNextDirection</code> | ||
| 345 | * that should be generated before inserting, | ||
| 346 | * but after the end tags have been generated | ||
| 347 | * @param insertTag the first tag to start inserting into document | ||
| 348 | * @return the reader used by the parser to load the document | ||
| 349 | */ | ||
| 350 | public HTMLEditorKit.ParserCallback getReader(int pos, int popDepth, | ||
| 351 | int pushDepth, | ||
| 352 | HTML.Tag insertTag) { | ||
| 353 | return getReader(pos, popDepth, pushDepth, insertTag, true); | ||
| 354 | } | ||
| 355 | |||
| 356 | /** | ||
| 357 | * Fetches the reader for the parser to use to load the document | ||
| 358 | * with HTML. This is implemented to return an instance of | ||
| 359 | * HTMLDocument.HTMLReader. Subclasses can reimplement this | ||
| 360 | * method to change how the document get structured if desired | ||
| 361 | * (e.g. to handle custom tags, structurally represent character | ||
| 362 | * style elements, etc.). | ||
| 363 | * | ||
| 364 | * @param popDepth the number of <code>ElementSpec.EndTagTypes</code> | ||
| 365 | * to generate before inserting | ||
| 366 | * @param pushDepth the number of <code>ElementSpec.StartTagTypes</code> | ||
| 367 | * with a direction of <code>ElementSpec.JoinNextDirection</code> | ||
| 368 | * that should be generated before inserting, | ||
| 369 | * but after the end tags have been generated | ||
| 370 | * @param insertTag the first tag to start inserting into document | ||
| 371 | * @param insertInsertTag false if all the Elements after insertTag should | ||
| 372 | * be inserted; otherwise insertTag will be inserted | ||
| 373 | * @return the reader used by the parser to load the document | ||
| 374 | */ | ||
| 375 | HTMLEditorKit.ParserCallback getReader(int pos, int popDepth, | ||
| 376 | int pushDepth, | ||
| 377 | HTML.Tag insertTag, | ||
| 378 | boolean insertInsertTag) { | ||
| 379 | Object desc = getProperty(Document.StreamDescriptionProperty); | ||
| 380 | if (desc instanceof URL) { | ||
| 381 | setBase((URL)desc); | ||
| 382 | } | ||
| 383 | HTMLReader reader = new HTMLReader(pos, popDepth, pushDepth, | ||
| 384 | insertTag, insertInsertTag, false, | ||
| 385 | true); | ||
| 386 | return reader; | ||
| 387 | } | ||
| 388 | |||
| 389 | /** | ||
| 390 | * Returns the location to resolve relative URLs against. By | ||
| 391 | * default this will be the document's URL if the document | ||
| 392 | * was loaded from a URL. If a base tag is found and | ||
| 393 | * can be parsed, it will be used as the base location. | ||
| 394 | * | ||
| 395 | * @return the base location | ||
| 396 | */ | ||
| 397 | public URL getBase() { | ||
| 398 | return base; | ||
| 399 | } | ||
| 400 | |||
| 401 | /** | ||
| 402 | * Sets the location to resolve relative URLs against. By | ||
| 403 | * default this will be the document's URL if the document | ||
| 404 | * was loaded from a URL. If a base tag is found and | ||
| 405 | * can be parsed, it will be used as the base location. | ||
| 406 | * <p>This also sets the base of the <code>StyleSheet</code> | ||
| 407 | * to be <code>u</code> as well as the base of the document. | ||
| 408 | * | ||
| 409 | * @param u the desired base URL | ||
| 410 | */ | ||
| 411 | public void setBase(URL u) { | ||
| 412 | base = u; | ||
| 413 | getStyleSheet().setBase(u); | ||
| 414 | } | ||
| 415 | |||
| 416 | /** | ||
| 417 | * Inserts new elements in bulk. This is how elements get created | ||
| 418 | * in the document. The parsing determines what structure is needed | ||
| 419 | * and creates the specification as a set of tokens that describe the | ||
| 420 | * edit while leaving the document free of a write-lock. This method | ||
| 421 | * can then be called in bursts by the reader to acquire a write-lock | ||
| 422 | * for a shorter duration (i.e. while the document is actually being | ||
| 423 | * altered). | ||
| 424 | * | ||
| 425 | * @param offset the starting offset | ||
| 426 | * @param data the element data | ||
| 427 | * @exception BadLocationException if the given position does not | ||
| 428 | * represent a valid location in the associated document. | ||
| 429 | */ | ||
| 430 | protected void insert(int offset, ElementSpec[] data) throws BadLocationException { | ||
| 431 | super.insert(offset, data); | ||
| 432 | } | ||
| 433 | |||
| 434 | /** | ||
| 435 | * Updates document structure as a result of text insertion. This | ||
| 436 | * will happen within a write lock. This implementation simply | ||
| 437 | * parses the inserted content for line breaks and builds up a set | ||
| 438 | * of instructions for the element buffer. | ||
| 439 | * | ||
| 440 | * @param chng a description of the document change | ||
| 441 | * @param attr the attributes | ||
| 442 | */ | ||
| 443 | protected void insertUpdate(DefaultDocumentEvent chng, AttributeSet attr) { | ||
| 444 | if(attr == null) { | ||
| 445 | attr = contentAttributeSet; | ||
| 446 | } | ||
| 447 | |||
| 448 | // If this is the composed text element, merge the content attribute to it | ||
| 449 | else if (attr.isDefined(StyleConstants.ComposedTextAttribute)) { | ||
| 450 | ((MutableAttributeSet)attr).addAttributes(contentAttributeSet); | ||
| 451 | } | ||
| 452 | |||
| 453 | if (attr.isDefined(IMPLIED_CR)) { | ||
| 454 | ((MutableAttributeSet)attr).removeAttribute(IMPLIED_CR); | ||
| 455 | } | ||
| 456 | |||
| 457 | super.insertUpdate(chng, attr); | ||
| 458 | } | ||
| 459 | |||
| 460 | /** | ||
| 461 | * Replaces the contents of the document with the given | ||
| 462 | * element specifications. This is called before insert if | ||
| 463 | * the loading is done in bursts. This is the only method called | ||
| 464 | * if loading the document entirely in one burst. | ||
| 465 | * | ||
| 466 | * @param data the new contents of the document | ||
| 467 | */ | ||
| 468 | protected void create(ElementSpec[] data) { | ||
| 469 | super.create(data); | ||
| 470 | } | ||
| 471 | |||
| 472 | /** | ||
| 473 | * Sets attributes for a paragraph. | ||
| 474 | * <p> | ||
| 475 | * This method is thread safe, although most Swing methods | ||
| 476 | * are not. Please see | ||
| 477 | * <A HREF="http://java.sun.com/docs/books/tutorial/uiswing/misc/threads.html">How | ||
| 478 | * to Use Threads</A> for more information. | ||
| 479 | * | ||
| 480 | * @param offset the offset into the paragraph (must be at least 0) | ||
| 481 | * @param length the number of characters affected (must be at least 0) | ||
| 482 | * @param s the attributes | ||
| 483 | * @param replace whether to replace existing attributes, or merge them | ||
| 484 | */ | ||
| 485 | public void setParagraphAttributes(int offset, int length, AttributeSet s, | ||
| 486 | boolean replace) { | ||
| 487 | try { | ||
| 488 | writeLock(); | ||
| 489 | // Make sure we send out a change for the length of the paragraph. | ||
| 490 | int end = Math.min(offset + length, getLength()); | ||
| 491 | Element e = getParagraphElement(offset); | ||
| 492 | offset = e.getStartOffset(); | ||
| 493 | e = getParagraphElement(end); | ||
| 494 | length = Math.max(0, e.getEndOffset() - offset); | ||
| 495 | DefaultDocumentEvent changes = | ||
| 496 | new DefaultDocumentEvent(offset, length, | ||
| 497 | DocumentEvent.EventType.CHANGE); | ||
| 498 | AttributeSet sCopy = s.copyAttributes(); | ||
| 499 | int lastEnd = Integer.MAX_VALUE; | ||
| 500 | for (int pos = offset; pos <= end; pos = lastEnd) { | ||
| 501 | Element paragraph = getParagraphElement(pos); | ||
| 502 | if (lastEnd == paragraph.getEndOffset()) { | ||
| 503 | lastEnd++; | ||
| 504 | } | ||
| 505 | else { | ||
| 506 | lastEnd = paragraph.getEndOffset(); | ||
| 507 | } | ||
| 508 | MutableAttributeSet attr = | ||
| 509 | (MutableAttributeSet) paragraph.getAttributes(); | ||
| 510 | changes.addEdit(new AttributeUndoableEdit(paragraph, sCopy, replace)); | ||
| 511 | if (replace) { | ||
| 512 | attr.removeAttributes(attr); | ||
| 513 | } | ||
| 514 | attr.addAttributes(s); | ||
| 515 | } | ||
| 516 | changes.end(); | ||
| 517 | fireChangedUpdate(changes); | ||
| 518 | fireUndoableEditUpdate(new UndoableEditEvent(this, changes)); | ||
| 519 | } finally { | ||
| 520 | writeUnlock(); | ||
| 521 | } | ||
| 522 | } | ||
| 523 | |||
| 524 | /** | ||
| 525 | * Fetches the <code>StyleSheet</code> with the document-specific display | ||
| 526 | * rules (CSS) that were specified in the HTML document itself. | ||
| 527 | * | ||
| 528 | * @return the <code>StyleSheet</code> | ||
| 529 | */ | ||
| 530 | public StyleSheet getStyleSheet() { | ||
| 531 | return (StyleSheet) getAttributeContext(); | ||
| 532 | } | ||
| 533 | |||
| 534 | /** | ||
| 535 | * Fetches an iterator for the specified HTML tag. | ||
| 536 | * This can be used for things like iterating over the | ||
| 537 | * set of anchors contained, or iterating over the input | ||
| 538 | * elements. | ||
| 539 | * | ||
| 540 | * @param t the requested <code>HTML.Tag</code> | ||
| 541 | * @return the <code>Iterator</code> for the given HTML tag | ||
| 542 | * @see javax.swing.text.html.HTML.Tag | ||
| 543 | */ | ||
| 544 | public Iterator getIterator(HTML.Tag t) { | ||
| 545 | if (t.isBlock()) { | ||
| 546 | // TBD | ||
| 547 | return null; | ||
| 548 | } | ||
| 549 | return new LeafIterator(t, this); | ||
| 550 | } | ||
| 551 | |||
| 552 | /** | ||
| 553 | * Creates a document leaf element that directly represents | ||
| 554 | * text (doesn't have any children). This is implemented | ||
| 555 | * to return an element of type | ||
| 556 | * <code>HTMLDocument.RunElement</code>. | ||
| 557 | * | ||
| 558 | * @param parent the parent element | ||
| 559 | * @param a the attributes for the element | ||
| 560 | * @param p0 the beginning of the range (must be at least 0) | ||
| 561 | * @param p1 the end of the range (must be at least p0) | ||
| 562 | * @return the new element | ||
| 563 | */ | ||
| 564 | protected Element createLeafElement(Element parent, AttributeSet a, int p0, int p1) { | ||
| 565 | return new RunElement(parent, a, p0, p1); | ||
| 566 | } | ||
| 567 | |||
| 568 | /** | ||
| 569 | * Creates a document branch element, that can contain other elements. | ||
| 570 | * This is implemented to return an element of type | ||
| 571 | * <code>HTMLDocument.BlockElement</code>. | ||
| 572 | * | ||
| 573 | * @param parent the parent element | ||
| 574 | * @param a the attributes | ||
| 575 | * @return the element | ||
| 576 | */ | ||
| 577 | protected Element createBranchElement(Element parent, AttributeSet a) { | ||
| 578 | return new BlockElement(parent, a); | ||
| 579 | } | ||
| 580 | |||
| 581 | /** | ||
| 582 | * Creates the root element to be used to represent the | ||
| 583 | * default document structure. | ||
| 584 | * | ||
| 585 | * @return the element base | ||
| 586 | */ | ||
| 587 | protected AbstractElement createDefaultRoot() { | ||
| 588 | // grabs a write-lock for this initialization and | ||
| 589 | // abandon it during initialization so in normal | ||
| 590 | // operation we can detect an illegitimate attempt | ||
| 591 | // to mutate attributes. | ||
| 592 | writeLock(); | ||
| 593 | MutableAttributeSet a = new SimpleAttributeSet(); | ||
| 594 | a.addAttribute(StyleConstants.NameAttribute, HTML.Tag.HTML); | ||
| 595 | BlockElement html = new BlockElement(null, a.copyAttributes()); | ||
| 596 | a.removeAttributes(a); | ||
| 597 | a.addAttribute(StyleConstants.NameAttribute, HTML.Tag.BODY); | ||
| 598 | BlockElement body = new BlockElement(html, a.copyAttributes()); | ||
| 599 | a.removeAttributes(a); | ||
| 600 | a.addAttribute(StyleConstants.NameAttribute, HTML.Tag.P); | ||
| 601 | getStyleSheet().addCSSAttributeFromHTML(a, CSS.Attribute.MARGIN_TOP, "0"); | ||
| 602 | BlockElement paragraph = new BlockElement(body, a.copyAttributes()); | ||
| 603 | a.removeAttributes(a); | ||
| 604 | a.addAttribute(StyleConstants.NameAttribute, HTML.Tag.CONTENT); | ||
| 605 | RunElement brk = new RunElement(paragraph, a, 0, 1); | ||
| 606 | Element[] buff = new Element[1]; | ||
| 607 | buff[0] = brk; | ||
| 608 | paragraph.replace(0, 0, buff); | ||
| 609 | buff[0] = paragraph; | ||
| 610 | body.replace(0, 0, buff); | ||
| 611 | buff[0] = body; | ||
| 612 | html.replace(0, 0, buff); | ||
| 613 | writeUnlock(); | ||
| 614 | return html; | ||
| 615 | } | ||
| 616 | |||
| 617 | /** | ||
| 618 | * Sets the number of tokens to buffer before trying to update | ||
| 619 | * the documents element structure. | ||
| 620 | * | ||
| 621 | * @param n the number of tokens to buffer | ||
| 622 | */ | ||
| 623 | public void setTokenThreshold(int n) { | ||
| 624 | putProperty(TokenThreshold, new Integer(n)); | ||
| 625 | } | ||
| 626 | |||
| 627 | /** | ||
| 628 | * Gets the number of tokens to buffer before trying to update | ||
| 629 | * the documents element structure. The default value is | ||
| 630 | * <code>Integer.MAX_VALUE</code>. | ||
| 631 | * | ||
| 632 | * @return the number of tokens to buffer | ||
| 633 | */ | ||
| 634 | public int getTokenThreshold() { | ||
| 635 | Integer i = (Integer) getProperty(TokenThreshold); | ||
| 636 | if (i != null) { | ||
| 637 | return i.intValue(); | ||
| 638 | } | ||
| 639 | return Integer.MAX_VALUE; | ||
| 640 | } | ||
| 641 | |||
| 642 | /** | ||
| 643 | * Determines how unknown tags are handled by the parser. | ||
| 644 | * If set to true, unknown | ||
| 645 | * tags are put in the model, otherwise they are dropped. | ||
| 646 | * | ||
| 647 | * @param preservesTags true if unknown tags should be | ||
| 648 | * saved in the model, otherwise tags are dropped | ||
| 649 | * @see javax.swing.text.html.HTML.Tag | ||
| 650 | */ | ||
| 651 | public void setPreservesUnknownTags(boolean preservesTags) { | ||
| 652 | preservesUnknownTags = preservesTags; | ||
| 653 | } | ||
| 654 | |||
| 655 | /** | ||
| 656 | * Returns the behavior the parser observes when encountering | ||
| 657 | * unknown tags. | ||
| 658 | * | ||
| 659 | * @see javax.swing.text.html.HTML.Tag | ||
| 660 | * @return true if unknown tags are to be preserved when parsing | ||
| 661 | */ | ||
| 662 | public boolean getPreservesUnknownTags() { | ||
| 663 | return preservesUnknownTags; | ||
| 664 | } | ||
| 665 | |||
| 666 | /** | ||
| 667 | * Processes <code>HyperlinkEvents</code> that | ||
| 668 | * are generated by documents in an HTML frame. | ||
| 669 | * The <code>HyperlinkEvent</code> type, as the parameter suggests, | ||
| 670 | * is <code>HTMLFrameHyperlinkEvent</code>. | ||
| 671 | * In addition to the typical information contained in a | ||
| 672 | * <code>HyperlinkEvent</code>, | ||
| 673 | * this event contains the element that corresponds to the frame in | ||
| 674 | * which the click happened (the source element) and the | ||
| 675 | * target name. The target name has 4 possible values: | ||
| 676 | * <ul> | ||
| 677 | * <li> _self | ||
| 678 | * <li> _parent | ||
| 679 | * <li> _top | ||
| 680 | * <li> a named frame | ||
| 681 | * </ul> | ||
| 682 | * | ||
| 683 | * If target is _self, the action is to change the value of the | ||
| 684 | * <code>HTML.Attribute.SRC</code> attribute and fires a | ||
| 685 | * <code>ChangedUpdate</code> event. | ||
| 686 | *<p> | ||
| 687 | * If the target is _parent, then it deletes the parent element, | ||
| 688 | * which is a <FRAMESET> element, and inserts a new <FRAME> | ||
| 689 | * element, and sets its <code>HTML.Attribute.SRC</code> attribute | ||
| 690 | * to have a value equal to the destination URL and fire a | ||
| 691 | * <code>RemovedUpdate</code> and <code>InsertUpdate</code>. | ||
| 692 | *<p> | ||
| 693 | * If the target is _top, this method does nothing. In the implementation | ||
| 694 | * of the view for a frame, namely the <code>FrameView</code>, | ||
| 695 | * the processing of _top is handled. Given that _top implies | ||
| 696 | * replacing the entire document, it made sense to handle this outside | ||
| 697 | * of the document that it will replace. | ||
| 698 | *<p> | ||
| 699 | * If the target is a named frame, then the element hierarchy is searched | ||
| 700 | * for an element with a name equal to the target, its | ||
| 701 | * <code>HTML.Attribute.SRC</code> attribute is updated and a | ||
| 702 | * <code>ChangedUpdate</code> event is fired. | ||
| 703 | * | ||
| 704 | * @param e the event | ||
| 705 | */ | ||
| 706 | public void processHTMLFrameHyperlinkEvent(HTMLFrameHyperlinkEvent e) { | ||
| 707 | String frameName = e.getTarget(); | ||
| 708 | Element element = e.getSourceElement(); | ||
| 709 | String urlStr = e.getURL().toString(); | ||
| 710 | |||
| 711 | if (frameName.equals("_self")) { | ||
| 712 | /* | ||
| 713 | The source and destination elements | ||
| 714 | are the same. | ||
| 715 | */ | ||
| 716 | updateFrame(element, urlStr); | ||
| 717 | } else if (frameName.equals("_parent")) { | ||
| 718 | /* | ||
| 719 | The destination is the parent of the frame. | ||
| 720 | */ | ||
| 721 | updateFrameSet(element.getParentElement(), urlStr); | ||
| 722 | } else { | ||
| 723 | /* | ||
| 724 | locate a named frame | ||
| 725 | */ | ||
| 726 | Element targetElement = findFrame(frameName); | ||
| 727 | if (targetElement != null) { | ||
| 728 | updateFrame(targetElement, urlStr); | ||
| 729 | } | ||
| 730 | } | ||
| 731 | } | ||
| 732 | |||
| 733 | |||
| 734 | /** | ||
| 735 | * Searches the element hierarchy for an FRAME element | ||
| 736 | * that has its name attribute equal to the <code>frameName</code>. | ||
| 737 | * | ||
| 738 | * @param frameName | ||
| 739 | * @return the element whose NAME attribute has a value of | ||
| 740 | * <code>frameName</code>; returns <code>null</code> | ||
| 741 | * if not found | ||
| 742 | */ | ||
| 743 | private Element findFrame(String frameName) { | ||
| 744 | ElementIterator it = new ElementIterator(this); | ||
| 745 | Element next; | ||
| 746 | |||
| 747 | while ((next = it.next()) != null) { | ||
| 748 | AttributeSet attr = next.getAttributes(); | ||
| 749 | if (matchNameAttribute(attr, HTML.Tag.FRAME)) { | ||
| 750 | String frameTarget = (String)attr.getAttribute(HTML.Attribute.NAME); | ||
| 751 | if (frameTarget != null && frameTarget.equals(frameName)) { | ||
| 752 | break; | ||
| 753 | } | ||
| 754 | } | ||
| 755 | } | ||
| 756 | return next; | ||
| 757 | } | ||
| 758 | |||
| 759 | /** | ||
| 760 | * Returns true if <code>StyleConstants.NameAttribute</code> is | ||
| 761 | * equal to the tag that is passed in as a parameter. | ||
| 762 | * | ||
| 763 | * @param attr the attributes to be matched | ||
| 764 | * @param tag the value to be matched | ||
| 765 | * @return true if there is a match, false otherwise | ||
| 766 | * @see javax.swing.text.html.HTML.Attribute | ||
| 767 | */ | ||
| 768 | static boolean matchNameAttribute(AttributeSet attr, HTML.Tag tag) { | ||
| 769 | Object o = attr.getAttribute(StyleConstants.NameAttribute); | ||
| 770 | if (o instanceof HTML.Tag) { | ||
| 771 | HTML.Tag name = (HTML.Tag) o; | ||
| 772 | if (name == tag) { | ||
| 773 | return true; | ||
| 774 | } | ||
| 775 | } | ||
| 776 | return false; | ||
| 777 | } | ||
| 778 | |||
| 779 | /** | ||
| 780 | * Replaces a frameset branch Element with a frame leaf element. | ||
| 781 | * | ||
| 782 | * @param element the frameset element to remove | ||
| 783 | * @param url the value for the SRC attribute for the | ||
| 784 | * new frame that will replace the frameset | ||
| 785 | */ | ||
| 786 | private void updateFrameSet(Element element, String url) { | ||
| 787 | try { | ||
| 788 | int startOffset = element.getStartOffset(); | ||
| 789 | int endOffset = Math.min(getLength(), element.getEndOffset()); | ||
| 790 | String html = "<frame"; | ||
| 791 | if (url != null) { | ||
| 792 | html += " src=\"" + url + "\""; | ||
| 793 | } | ||
| 794 | html += ">"; | ||
| 795 | installParserIfNecessary(); | ||
| 796 | setOuterHTML(element, html); | ||
| 797 | } catch (BadLocationException e1) { | ||
| 798 | // Should handle this better | ||
| 799 | } catch (IOException ioe) { | ||
| 800 | // Should handle this better | ||
| 801 | } | ||
| 802 | } | ||
| 803 | |||
| 804 | |||
| 805 | /** | ||
| 806 | * Updates the Frame elements <code>HTML.Attribute.SRC attribute</code> | ||
| 807 | * and fires a <code>ChangedUpdate</code> event. | ||
| 808 | * | ||
| 809 | * @param element a FRAME element whose SRC attribute will be updated | ||
| 810 | * @param url a string specifying the new value for the SRC attribute | ||
| 811 | */ | ||
| 812 | private void updateFrame(Element element, String url) { | ||
| 813 | |||
| 814 | try { | ||
| 815 | writeLock(); | ||
| 816 | DefaultDocumentEvent changes = new DefaultDocumentEvent(element.getStartOffset(), | ||
| 817 | 1, | ||
| 818 | DocumentEvent.EventType.CHANGE); | ||
| 819 | AttributeSet sCopy = element.getAttributes().copyAttributes(); | ||
| 820 | MutableAttributeSet attr = (MutableAttributeSet) element.getAttributes(); | ||
| 821 | changes.addEdit(new AttributeUndoableEdit(element, sCopy, false)); | ||
| 822 | attr.removeAttribute(HTML.Attribute.SRC); | ||
| 823 | attr.addAttribute(HTML.Attribute.SRC, url); | ||
| 824 | changes.end(); | ||
| 825 | fireChangedUpdate(changes); | ||
| 826 | fireUndoableEditUpdate(new UndoableEditEvent(this, changes)); | ||
| 827 | } finally { | ||
| 828 | writeUnlock(); | ||
| 829 | } | ||
| 830 | } | ||
| 831 | |||
| 832 | |||
| 833 | /** | ||
| 834 | * Returns true if the document will be viewed in a frame. | ||
| 835 | * @return true if document will be viewed in a frame, otherwise false | ||
| 836 | */ | ||
| 837 | boolean isFrameDocument() { | ||
| 838 | return frameDocument; | ||
| 839 | } | ||
| 840 | |||
| 841 | /** | ||
| 842 | * Sets a boolean state about whether the document will be | ||
| 843 | * viewed in a frame. | ||
| 844 | * @param frameDoc true if the document will be viewed in a frame, | ||
| 845 | * otherwise false | ||
| 846 | */ | ||
| 847 | void setFrameDocumentState(boolean frameDoc) { | ||
| 848 | this.frameDocument = frameDoc; | ||
| 849 | } | ||
| 850 | |||
| 851 | /** | ||
| 852 | * Adds the specified map, this will remove a Map that has been | ||
| 853 | * previously registered with the same name. | ||
| 854 | * | ||
| 855 | * @param map the <code>Map</code> to be registered | ||
| 856 | */ | ||
| 857 | void addMap(Map map) { | ||
| 858 | String name = map.getName(); | ||
| 859 | |||
| 860 | if (name != null) { | ||
| 861 | Object maps = getProperty(MAP_PROPERTY); | ||
| 862 | |||
| 863 | if (maps == null) { | ||
| 864 | maps = new Hashtable(11); | ||
| 865 | putProperty(MAP_PROPERTY, maps); | ||
| 866 | } | ||
| 867 | if (maps instanceof Hashtable) { | ||
| 868 | ((Hashtable)maps).put("#" + name, map); | ||
| 869 | } | ||
| 870 | } | ||
| 871 | } | ||
| 872 | |||
| 873 | /** | ||
| 874 | * Removes a previously registered map. | ||
| 875 | * @param map the <code>Map</code> to be removed | ||
| 876 | */ | ||
| 877 | void removeMap(Map map) { | ||
| 878 | String name = map.getName(); | ||
| 879 | |||
| 880 | if (name != null) { | ||
| 881 | Object maps = getProperty(MAP_PROPERTY); | ||
| 882 | |||
| 883 | if (maps instanceof Hashtable) { | ||
| 884 | ((Hashtable)maps).remove("#" + name); | ||
| 885 | } | ||
| 886 | } | ||
| 887 | } | ||
| 888 | |||
| 889 | /** | ||
| 890 | * Returns the Map associated with the given name. | ||
| 891 | * @param name the name of the desired <code>Map</code> | ||
| 892 | * @return the <code>Map</code> or <code>null</code> if it can't | ||
| 893 | * be found, or if <code>name</code> is <code>null</code> | ||
| 894 | */ | ||
| 895 | Map getMap(String name) { | ||
| 896 | if (name != null) { | ||
| 897 | Object maps = getProperty(MAP_PROPERTY); | ||
| 898 | |||
| 899 | if (maps != null && (maps instanceof Hashtable)) { | ||
| 900 | return (Map)((Hashtable)maps).get(name); | ||
| 901 | } | ||
| 902 | } | ||
| 903 | return null; | ||
| 904 | } | ||
| 905 | |||
| 906 | /** | ||
| 907 | * Returns an <code>Enumeration</code> of the possible Maps. | ||
| 908 | * @return the enumerated list of maps, or <code>null</code> | ||
| 909 | * if the maps are not an instance of <code>Hashtable</code> | ||
| 910 | */ | ||
| 911 | Enumeration getMaps() { | ||
| 912 | Object maps = getProperty(MAP_PROPERTY); | ||
| 913 | |||
| 914 | if (maps instanceof Hashtable) { | ||
| 915 | return ((Hashtable)maps).elements(); | ||
| 916 | } | ||
| 917 | return null; | ||
| 918 | } | ||
| 919 | |||
| 920 | /** | ||
| 921 | * Sets the content type language used for style sheets that do not | ||
| 922 | * explicitly specify the type. The default is text/css. | ||
| 923 | * @param contentType the content type language for the style sheets | ||
| 924 | */ | ||
| 925 | /* public */ | ||
| 926 | void setDefaultStyleSheetType(String contentType) { | ||
| 927 | putProperty(StyleType, contentType); | ||
| 928 | } | ||
| 929 | |||
| 930 | /** | ||
| 931 | * Returns the content type language used for style sheets. The default | ||
| 932 | * is text/css. | ||
| 933 | * @return the content type language used for the style sheets | ||
| 934 | */ | ||
| 935 | /* public */ | ||
| 936 | String getDefaultStyleSheetType() { | ||
| 937 | String retValue = (String)getProperty(StyleType); | ||
| 938 | if (retValue == null) { | ||
| 939 | return "text/css"; | ||
| 940 | } | ||
| 941 | return retValue; | ||
| 942 | } | ||
| 943 | |||
| 944 | /** | ||
| 945 | * Sets the parser that is used by the methods that insert html | ||
| 946 | * into the existing document, such as <code>setInnerHTML</code>, | ||
| 947 | * and <code>setOuterHTML</code>. | ||
| 948 | * <p> | ||
| 949 | * <code>HTMLEditorKit.createDefaultDocument</code> will set the parser | ||
| 950 | * for you. If you create an <code>HTMLDocument</code> by hand, | ||
| 951 | * be sure and set the parser accordingly. | ||
| 952 | * @param parser the parser to be used for text insertion | ||
| 953 | * | ||
| 954 | * @since 1.3 | ||
| 955 | */ | ||
| 956 | public void setParser(HTMLEditorKit.Parser parser) { | ||
| 957 | this.parser = parser; | ||
| 958 | putProperty("__PARSER__", null); | ||
| 959 | } | ||
| 960 | |||
| 961 | /** | ||
| 962 | * Returns the parser that is used when inserting HTML into the existing | ||
| 963 | * document. | ||
| 964 | * @return the parser used for text insertion | ||
| 965 | * | ||
| 966 | * @since 1.3 | ||
| 967 | */ | ||
| 968 | public HTMLEditorKit.Parser getParser() { | ||
| 969 | Object p = getProperty("__PARSER__"); | ||
| 970 | |||
| 971 | if (p instanceof HTMLEditorKit.Parser) { | ||
| 972 | return (HTMLEditorKit.Parser)p; | ||
| 973 | } | ||
| 974 | return parser; | ||
| 975 | } | ||
| 976 | |||
| 977 | /** | ||
| 978 | * Replaces the children of the given element with the contents | ||
| 979 | * specified as an HTML string. | ||
| 980 | * | ||
| 981 | * <p>This will be seen as at least two events, n inserts followed by | ||
| 982 | * a remove.</p> | ||
| 983 | * | ||
| 984 | * <p>Consider the following structure (the <code>elem</code> | ||
| 985 | * parameter is <b>in bold</b>).</p> | ||
| 986 | * | ||
| 987 | * <pre> | ||
| 988 | * <body> | ||
| 989 | * | | ||
| 990 | * <b><div></b> | ||
| 991 | * / \ | ||
| 992 | * <p> <p> | ||
| 993 | * </pre> | ||
| 994 | * | ||
| 995 | * <p>Invoking <code>setInnerHTML(elem, "<ul><li>")</code> | ||
| 996 | * results in the following structure (new elements are <font | ||
| 997 | * color="red">in red</font>).</p> | ||
| 998 | * | ||
| 999 | * <pre> | ||
| 1000 | * <body> | ||
| 1001 | * | | ||
| 1002 | * <b><div></b> | ||
| 1003 | * \ | ||
| 1004 | * <font color="red"><ul></font> | ||
| 1005 | * \ | ||
| 1006 | * <font color="red"><li></font> | ||
| 1007 | * </pre> | ||
| 1008 | * | ||
| 1009 | * <p>Parameter <code>elem</code> must not be a leaf element, | ||
| 1010 | * otherwise an <code>IllegalArgumentException</code> is thrown. | ||
| 1011 | * If either <code>elem</code> or <code>htmlText</code> parameter | ||
| 1012 | * is <code>null</code>, no changes are made to the document.</p> | ||
| 1013 | * | ||
| 1014 | * <p>For this to work correcty, the document must have an | ||
| 1015 | * <code>HTMLEditorKit.Parser</code> set. This will be the case | ||
| 1016 | * if the document was created from an HTMLEditorKit via the | ||
| 1017 | * <code>createDefaultDocument</code> method.</p> | ||
| 1018 | * | ||
| 1019 | * @param elem the branch element whose children will be replaced | ||
| 1020 | * @param htmlText the string to be parsed and assigned to <code>elem</code> | ||
| 1021 | * @throws IllegalArgumentException if <code>elem</code> is a leaf | ||
| 1022 | * @throws IllegalStateException if an <code>HTMLEditorKit.Parser</code> | ||
| 1023 | * has not been defined | ||
| 1024 | * @since 1.3 | ||
| 1025 | */ | ||
| 1026 | public void setInnerHTML(Element elem, String htmlText) throws | ||
| 1027 | BadLocationException, IOException { | ||
| 1028 | verifyParser(); | ||
| 1029 | if (elem != null && elem.isLeaf()) { | ||
| 1030 | throw new IllegalArgumentException | ||
| 1031 | ("Can not set inner HTML of a leaf"); | ||
| 1032 | } | ||
| 1033 | if (elem != null && htmlText != null) { | ||
| 1034 | int oldCount = elem.getElementCount(); | ||
| 1035 | int insertPosition = elem.getStartOffset(); | ||
| 1036 | insertHTML(elem, elem.getStartOffset(), htmlText, true); | ||
| 1037 | if (elem.getElementCount() > oldCount) { | ||
| 1038 | // Elements were inserted, do the cleanup. | ||
| 1039 | removeElements(elem, elem.getElementCount() - oldCount, | ||
| 1040 | oldCount); | ||
| 1041 | } | ||
| 1042 | } | ||
| 1043 | } | ||
| 1044 | |||
| 1045 | /** | ||
| 1046 | * Replaces the given element in the parent with the contents | ||
| 1047 | * specified as an HTML string. | ||
| 1048 | * | ||
| 1049 | * <p>This will be seen as at least two events, n inserts followed by | ||
| 1050 | * a remove.</p> | ||
| 1051 | * | ||
| 1052 | * <p>When replacing a leaf this will attempt to make sure there is | ||
| 1053 | * a newline present if one is needed. This may result in an additional | ||
| 1054 | * element being inserted. Consider, if you were to replace a character | ||
| 1055 | * element that contained a newline with <img> this would create | ||
| 1056 | * two elements, one for the image, ane one for the newline.</p> | ||
| 1057 | * | ||
| 1058 | * <p>If you try to replace the element at length you will most | ||
| 1059 | * likely end up with two elements, eg | ||
| 1060 | * <code>setOuterHTML(getCharacterElement (getLength()), | ||
| 1061 | * "blah")</code> will result in two leaf elements at the end, one | ||
| 1062 | * representing 'blah', and the other representing the end | ||
| 1063 | * element.</p> | ||
| 1064 | * | ||
| 1065 | * <p>Consider the following structure (the <code>elem</code> | ||
| 1066 | * parameter is <b>in bold</b>).</p> | ||
| 1067 | * | ||
| 1068 | * <pre> | ||
| 1069 | * <body> | ||
| 1070 | * | | ||
| 1071 | * <b><div></b> | ||
| 1072 | * / \ | ||
| 1073 | * <p> <p> | ||
| 1074 | * </pre> | ||
| 1075 | * | ||
| 1076 | * <p>Invoking <code>setOuterHTML(elem, "<ul><li>")</code> | ||
| 1077 | * results in the following structure (new elements are <font | ||
| 1078 | * color="red">in red</font>).</p> | ||
| 1079 | * | ||
| 1080 | * <pre> | ||
| 1081 | * <body> | ||
| 1082 | * | | ||
| 1083 | * <font color="red"><ul></font> | ||
| 1084 | * \ | ||
| 1085 | * <font color="red"><li></font> | ||
| 1086 | * </pre> | ||
| 1087 | * | ||
| 1088 | * <p>If either <code>elem</code> or <code>htmlText</code> | ||
| 1089 | * parameter is <code>null</code>, no changes are made to the | ||
| 1090 | * document.</p> | ||
| 1091 | * | ||
| 1092 | * <p>For this to work correcty, the document must have an | ||
| 1093 | * HTMLEditorKit.Parser set. This will be the case if the document | ||
| 1094 | * was created from an HTMLEditorKit via the | ||
| 1095 | * <code>createDefaultDocument</code> method.</p> | ||
| 1096 | * | ||
| 1097 | * @param elem the element to replace | ||
| 1098 | * @param htmlText the string to be parsed and inserted in place of <code>elem</code> | ||
| 1099 | * @throws IllegalStateException if an HTMLEditorKit.Parser has not | ||
| 1100 | * been set | ||
| 1101 | * @since 1.3 | ||
| 1102 | */ | ||
| 1103 | public void setOuterHTML(Element elem, String htmlText) throws | ||
| 1104 | BadLocationException, IOException { | ||
| 1105 | verifyParser(); | ||
| 1106 | if (elem != null && elem.getParentElement() != null && | ||
| 1107 | htmlText != null) { | ||
| 1108 | int start = elem.getStartOffset(); | ||
| 1109 | int end = elem.getEndOffset(); | ||
| 1110 | int startLength = getLength(); | ||
| 1111 | // We don't want a newline if elem is a leaf, and doesn't contain | ||
| 1112 | // a newline. | ||
| 1113 | boolean wantsNewline = !elem.isLeaf(); | ||
| 1114 | if (!wantsNewline && (end > startLength || | ||
| 1115 | getText(end - 1, 1).charAt(0) == NEWLINE[0])){ | ||
| 1116 | wantsNewline = true; | ||
| 1117 | } | ||
| 1118 | Element parent = elem.getParentElement(); | ||
| 1119 | int oldCount = parent.getElementCount(); | ||
| 1120 | insertHTML(parent, start, htmlText, wantsNewline); | ||
| 1121 | // Remove old. | ||
| 1122 | int newLength = getLength(); | ||
| 1123 | if (oldCount != parent.getElementCount()) { | ||
| 1124 | int removeIndex = parent.getElementIndex(start + newLength - | ||
| 1125 | startLength); | ||
| 1126 | removeElements(parent, removeIndex, 1); | ||
| 1127 | } | ||
| 1128 | } | ||
| 1129 | } | ||
| 1130 | |||
| 1131 | /** | ||
| 1132 | * Inserts the HTML specified as a string at the start | ||
| 1133 | * of the element. | ||
| 1134 | * | ||
| 1135 | * <p>Consider the following structure (the <code>elem</code> | ||
| 1136 | * parameter is <b>in bold</b>).</p> | ||
| 1137 | * | ||
| 1138 | * <pre> | ||
| 1139 | * <body> | ||
| 1140 | * | | ||
| 1141 | * <b><div></b> | ||
| 1142 | * / \ | ||
| 1143 | * <p> <p> | ||
| 1144 | * </pre> | ||
| 1145 | * | ||
| 1146 | * <p>Invoking <code>insertAfterStart(elem, | ||
| 1147 | * "<ul><li>")</code> results in the following structure | ||
| 1148 | * (new elements are <font color="red">in red</font>).</p> | ||
| 1149 | * | ||
| 1150 | * <pre> | ||
| 1151 | * <body> | ||
| 1152 | * | | ||
| 1153 | * <b><div></b> | ||
| 1154 | * / | \ | ||
| 1155 | * <font color="red"><ul></font> <p> <p> | ||
| 1156 | * / | ||
| 1157 | * <font color="red"><li></font> | ||
| 1158 | * </pre> | ||
| 1159 | * | ||
| 1160 | * <p>Unlike the <code>insertBeforeStart</code> method, new | ||
| 1161 | * elements become <em>children</em> of the specified element, | ||
| 1162 | * not siblings.</p> | ||
| 1163 | * | ||
| 1164 | * <p>Parameter <code>elem</code> must not be a leaf element, | ||
| 1165 | * otherwise an <code>IllegalArgumentException</code> is thrown. | ||
| 1166 | * If either <code>elem</code> or <code>htmlText</code> parameter | ||
| 1167 | * is <code>null</code>, no changes are made to the document.</p> | ||
| 1168 | * | ||
| 1169 | * <p>For this to work correcty, the document must have an | ||
| 1170 | * <code>HTMLEditorKit.Parser</code> set. This will be the case | ||
| 1171 | * if the document was created from an HTMLEditorKit via the | ||
| 1172 | * <code>createDefaultDocument</code> method.</p> | ||
| 1173 | * | ||
| 1174 | * @param elem the branch element to be the root for the new text | ||
| 1175 | * @param htmlText the string to be parsed and assigned to <code>elem</code> | ||
| 1176 | * @throws IllegalArgumentException if <code>elem</code> is a leaf | ||
| 1177 | * @throws IllegalStateException if an HTMLEditorKit.Parser has not | ||
| 1178 | * been set on the document | ||
| 1179 | * @since 1.3 | ||
| 1180 | */ | ||
| 1181 | public void insertAfterStart(Element elem, String htmlText) throws | ||
| 1182 | BadLocationException, IOException { | ||
| 1183 | verifyParser(); | ||
| 1184 | if (elem != null && elem.isLeaf()) { | ||
| 1185 | throw new IllegalArgumentException | ||
| 1186 | ("Can not insert HTML after start of a leaf"); | ||
| 1187 | } | ||
| 1188 | insertHTML(elem, elem.getStartOffset(), htmlText, false); | ||
| 1189 | } | ||
| 1190 | |||
| 1191 | /** | ||
| 1192 | * Inserts the HTML specified as a string at the end of | ||
| 1193 | * the element. | ||
| 1194 | * | ||
| 1195 | * <p> If <code>elem</code>'s children are leaves, and the | ||
| 1196 | * character at a <code>elem.getEndOffset() - 1</code> is a newline, | ||
| 1197 | * this will insert before the newline so that there isn't text after | ||
| 1198 | * the newline.</p> | ||
| 1199 | * | ||
| 1200 | * <p>Consider the following structure (the <code>elem</code> | ||
| 1201 | * parameter is <b>in bold</b>).</p> | ||
| 1202 | * | ||
| 1203 | * <pre> | ||
| 1204 | * <body> | ||
| 1205 | * | | ||
| 1206 | * <b><div></b> | ||
| 1207 | * / \ | ||
| 1208 | * <p> <p> | ||
| 1209 | * </pre> | ||
| 1210 | * | ||
| 1211 | * <p>Invoking <code>insertBeforeEnd(elem, "<ul><li>")</code> | ||
| 1212 | * results in the following structure (new elements are <font | ||
| 1213 | * color="red">in red</font>).</p> | ||
| 1214 | * | ||
| 1215 | * <pre> | ||
| 1216 | * <body> | ||
| 1217 | * | | ||
| 1218 | * <b><div></b> | ||
| 1219 | * / | \ | ||
| 1220 | * <p> <p> <font color="red"><ul></font> | ||
| 1221 | * \ | ||
| 1222 | * <font color="red"><li></font> | ||
| 1223 | * </pre> | ||
| 1224 | * | ||
| 1225 | * <p>Unlike the <code>insertAfterEnd</code> method, new elements | ||
| 1226 | * become <em>children</em> of the specified element, not | ||
| 1227 | * siblings.</p> | ||
| 1228 | * | ||
| 1229 | * <p>Parameter <code>elem</code> must not be a leaf element, | ||
| 1230 | * otherwise an <code>IllegalArgumentException</code> is thrown. | ||
| 1231 | * If either <code>elem</code> or <code>htmlText</code> parameter | ||
| 1232 | * is <code>null</code>, no changes are made to the document.</p> | ||
| 1233 | * | ||
| 1234 | * <p>For this to work correcty, the document must have an | ||
| 1235 | * <code>HTMLEditorKit.Parser</code> set. This will be the case | ||
| 1236 | * if the document was created from an HTMLEditorKit via the | ||
| 1237 | * <code>createDefaultDocument</code> method.</p> | ||
| 1238 | * | ||
| 1239 | * @param elem the element to be the root for the new text | ||
| 1240 | * @param htmlText the string to be parsed and assigned to <code>elem</code> | ||
| 1241 | * @throws IllegalArgumentException if <code>elem</code> is a leaf | ||
| 1242 | * @throws IllegalStateException if an HTMLEditorKit.Parser has not | ||
| 1243 | * been set on the document | ||
| 1244 | * @since 1.3 | ||
| 1245 | */ | ||
| 1246 | public void insertBeforeEnd(Element elem, String htmlText) throws | ||
| 1247 | BadLocationException, IOException { | ||
| 1248 | verifyParser(); | ||
| 1249 | if (elem != null && elem.isLeaf()) { | ||
| 1250 | throw new IllegalArgumentException | ||
| 1251 | ("Can not set inner HTML before end of leaf"); | ||
| 1252 | } | ||
| 1253 | if (elem != null) { | ||
| 1254 | int offset = elem.getEndOffset(); | ||
| 1255 | if (elem.getElement(elem.getElementIndex(offset - 1)).isLeaf() && | ||
| 1256 | getText(offset - 1, 1).charAt(0) == NEWLINE[0]) { | ||
| 1257 | offset--; | ||
| 1258 | } | ||
| 1259 | insertHTML(elem, offset, htmlText, false); | ||
| 1260 | } | ||
| 1261 | } | ||
| 1262 | |||
| 1263 | /** | ||
| 1264 | * Inserts the HTML specified as a string before the start of | ||
| 1265 | * the given element. | ||
| 1266 | * | ||
| 1267 | * <p>Consider the following structure (the <code>elem</code> | ||
| 1268 | * parameter is <b>in bold</b>).</p> | ||
| 1269 | * | ||
| 1270 | * <pre> | ||
| 1271 | * <body> | ||
| 1272 | * | | ||
| 1273 | * <b><div></b> | ||
| 1274 | * / \ | ||
| 1275 | * <p> <p> | ||
| 1276 | * </pre> | ||
| 1277 | * | ||
| 1278 | * <p>Invoking <code>insertBeforeStart(elem, | ||
| 1279 | * "<ul><li>")</code> results in the following structure | ||
| 1280 | * (new elements are <font color="red">in red</font>).</p> | ||
| 1281 | * | ||
| 1282 | * <pre> | ||
| 1283 | * <body> | ||
| 1284 | * / \ | ||
| 1285 | * <font color="red"><ul></font> <b><div></b> | ||
| 1286 | * / / \ | ||
| 1287 | * <font color="red"><li></font> <p> <p> | ||
| 1288 | * </pre> | ||
| 1289 | * | ||
| 1290 | * <p>Unlike the <code>insertAfterStart</code> method, new | ||
| 1291 | * elements become <em>siblings</em> of the specified element, not | ||
| 1292 | * children.</p> | ||
| 1293 | * | ||
| 1294 | * <p>If either <code>elem</code> or <code>htmlText</code> | ||
| 1295 | * parameter is <code>null</code>, no changes are made to the | ||
| 1296 | * document.</p> | ||
| 1297 | * | ||
| 1298 | * <p>For this to work correcty, the document must have an | ||
| 1299 | * <code>HTMLEditorKit.Parser</code> set. This will be the case | ||
| 1300 | * if the document was created from an HTMLEditorKit via the | ||
| 1301 | * <code>createDefaultDocument</code> method.</p> | ||
| 1302 | * | ||
| 1303 | * @param elem the element the content is inserted before | ||
| 1304 | * @param htmlText the string to be parsed and inserted before <code>elem</code> | ||
| 1305 | * @throws IllegalStateException if an HTMLEditorKit.Parser has not | ||
| 1306 | * been set on the document | ||
| 1307 | * @since 1.3 | ||
| 1308 | */ | ||
| 1309 | public void insertBeforeStart(Element elem, String htmlText) throws | ||
| 1310 | BadLocationException, IOException { | ||
| 1311 | verifyParser(); | ||
| 1312 | if (elem != null) { | ||
| 1313 | Element parent = elem.getParentElement(); | ||
| 1314 | |||
| 1315 | if (parent != null) { | ||
| 1316 | insertHTML(parent, elem.getStartOffset(), htmlText, false); | ||
| 1317 | } | ||
| 1318 | } | ||
| 1319 | } | ||
| 1320 | |||
| 1321 | /** | ||
| 1322 | * Inserts the HTML specified as a string after the the end of the | ||
| 1323 | * given element. | ||
| 1324 | * | ||
| 1325 | * <p>Consider the following structure (the <code>elem</code> | ||
| 1326 | * parameter is <b>in bold</b>).</p> | ||
| 1327 | * | ||
| 1328 | * <pre> | ||
| 1329 | * <body> | ||
| 1330 | * | | ||
| 1331 | * <b><div></b> | ||
| 1332 | * / \ | ||
| 1333 | * <p> <p> | ||
| 1334 | * </pre> | ||
| 1335 | * | ||
| 1336 | * <p>Invoking <code>insertAfterEnd(elem, "<ul><li>")</code> | ||
| 1337 | * results in the following structure (new elements are <font | ||
| 1338 | * color="red">in red</font>).</p> | ||
| 1339 | * | ||
| 1340 | * <pre> | ||
| 1341 | * <body> | ||
| 1342 | * / \ | ||
| 1343 | * <b><div></b> <font color="red"><ul></font> | ||
| 1344 | * / \ \ | ||
| 1345 | * <p> <p> <font color="red"><li></font> | ||
| 1346 | * </pre> | ||
| 1347 | * | ||
| 1348 | * <p>Unlike the <code>insertBeforeEnd</code> method, new elements | ||
| 1349 | * become <em>siblings</em> of the specified element, not | ||
| 1350 | * children.</p> | ||
| 1351 | * | ||
| 1352 | * <p>If either <code>elem</code> or <code>htmlText</code> | ||
| 1353 | * parameter is <code>null</code>, no changes are made to the | ||
| 1354 | * document.</p> | ||
| 1355 | * | ||
| 1356 | * <p>For this to work correcty, the document must have an | ||
| 1357 | * <code>HTMLEditorKit.Parser</code> set. This will be the case | ||
| 1358 | * if the document was created from an HTMLEditorKit via the | ||
| 1359 | * <code>createDefaultDocument</code> method.</p> | ||
| 1360 | * | ||
| 1361 | * @param elem the element the content is inserted after | ||
| 1362 | * @param htmlText the string to be parsed and inserted after <code>elem</code> | ||
| 1363 | * @throws IllegalStateException if an HTMLEditorKit.Parser has not | ||
| 1364 | * been set on the document | ||
| 1365 | * @since 1.3 | ||
| 1366 | */ | ||
| 1367 | public void insertAfterEnd(Element elem, String htmlText) throws | ||
| 1368 | BadLocationException, IOException { | ||
| 1369 | verifyParser(); | ||
| 1370 | if (elem != null) { | ||
| 1371 | Element parent = elem.getParentElement(); | ||
| 1372 | |||
| 1373 | if (parent != null) { | ||
| 1374 | int offset = elem.getEndOffset(); | ||
| 1375 | if (offset > getLength()) { | ||
| 1376 | offset--; | ||
| 1377 | } | ||
| 1378 | else if (elem.isLeaf() && getText(offset - 1, 1). | ||
| 1379 | charAt(0) == NEWLINE[0]) { | ||
| 1380 | offset--; | ||
| 1381 | } | ||
| 1382 | insertHTML(parent, offset, htmlText, false); | ||
| 1383 | } | ||
| 1384 | } | ||
| 1385 | } | ||
| 1386 | |||
| 1387 | /** | ||
| 1388 | * Returns the element that has the given id <code>Attribute</code>. | ||
| 1389 | * If the element can't be found, <code>null</code> is returned. | ||
| 1390 | * Note that this method works on an <code>Attribute</code>, | ||
| 1391 | * <i>not</i> a character tag. In the following HTML snippet: | ||
| 1392 | * <code><a id="HelloThere"></code> the attribute is | ||
| 1393 | * 'id' and the character tag is 'a'. | ||
| 1394 | * This is a convenience method for | ||
| 1395 | * <code>getElement(RootElement, HTML.Attribute.id, id)</code>. | ||
| 1396 | * This is not thread-safe. | ||
| 1397 | * | ||
| 1398 | * @param id the string representing the desired <code>Attribute</code> | ||
| 1399 | * @return the element with the specified <code>Attribute</code> | ||
| 1400 | * or <code>null</code> if it can't be found, | ||
| 1401 | * or <code>null</code> if <code>id</code> is <code>null</code> | ||
| 1402 | * @see javax.swing.text.html.HTML.Attribute | ||
| 1403 | * @since 1.3 | ||
| 1404 | */ | ||
| 1405 | public Element getElement(String id) { | ||
| 1406 | if (id == null) { | ||
| 1407 | return null; | ||
| 1408 | } | ||
| 1409 | return getElement(getDefaultRootElement(), HTML.Attribute.ID, id, | ||
| 1410 | true); | ||
| 1411 | } | ||
| 1412 | |||
| 1413 | /** | ||
| 1414 | * Returns the child element of <code>e</code> that contains the | ||
| 1415 | * attribute, <code>attribute</code> with value <code>value</code>, or | ||
| 1416 | * <code>null</code> if one isn't found. This is not thread-safe. | ||
| 1417 | * | ||
| 1418 | * @param e the root element where the search begins | ||
| 1419 | * @param attribute the desired <code>Attribute</code> | ||
| 1420 | * @param value the values for the specified <code>Attribute</code> | ||
| 1421 | * @return the element with the specified <code>Attribute</code> | ||
| 1422 | * and the specified <code>value</code>, or <code>null</code> | ||
| 1423 | * if it can't be found | ||
| 1424 | * @see javax.swing.text.html.HTML.Attribute | ||
| 1425 | * @since 1.3 | ||
| 1426 | */ | ||
| 1427 | public Element getElement(Element e, Object attribute, Object value) { | ||
| 1428 | return getElement(e, attribute, value, true); | ||
| 1429 | } | ||
| 1430 | |||
| 1431 | /** | ||
| 1432 | * Returns the child element of <code>e</code> that contains the | ||
| 1433 | * attribute, <code>attribute</code> with value <code>value</code>, or | ||
| 1434 | * <code>null</code> if one isn't found. This is not thread-safe. | ||
| 1435 | * <p> | ||
| 1436 | * If <code>searchLeafAttributes</code> is true, and <code>e</code> is | ||
| 1437 | * a leaf, any attributes that are instances of <code>HTML.Tag</code> | ||
| 1438 | * with a value that is an <code>AttributeSet</code> will also be checked. | ||
| 1439 | * | ||
| 1440 | * @param e the root element where the search begins | ||
| 1441 | * @param attribute the desired <code>Attribute</code> | ||
| 1442 | * @param value the values for the specified <code>Attribute</code> | ||
| 1443 | * @return the element with the specified <code>Attribute</code> | ||
| 1444 | * and the specified <code>value</code>, or <code>null</code> | ||
| 1445 | * if it can't be found | ||
| 1446 | * @see javax.swing.text.html.HTML.Attribute | ||
| 1447 | */ | ||
| 1448 | private Element getElement(Element e, Object attribute, Object value, | ||
| 1449 | boolean searchLeafAttributes) { | ||
| 1450 | AttributeSet attr = e.getAttributes(); | ||
| 1451 | |||
| 1452 | if (attr != null && attr.isDefined(attribute)) { | ||
| 1453 | if (value.equals(attr.getAttribute(attribute))) { | ||
| 1454 | return e; | ||
| 1455 | } | ||
| 1456 | } | ||
| 1457 | if (!e.isLeaf()) { | ||
| 1458 | for (int counter = 0, maxCounter = e.getElementCount(); | ||
| 1459 | counter < maxCounter; counter++) { | ||
| 1460 | Element retValue = getElement(e.getElement(counter), attribute, | ||
| 1461 | value, searchLeafAttributes); | ||
| 1462 | |||
| 1463 | if (retValue != null) { | ||
| 1464 | return retValue; | ||
| 1465 | } | ||
| 1466 | } | ||
| 1467 | } | ||
| 1468 | else if (searchLeafAttributes && attr != null) { | ||
| 1469 | // For some leaf elements we store the actual attributes inside | ||
| 1470 | // the AttributeSet of the Element (such as anchors). | ||
| 1471 | Enumeration names = attr.getAttributeNames(); | ||
| 1472 | if (names != null) { | ||
| 1473 | while (names.hasMoreElements()) { | ||
| 1474 | Object name = names.nextElement(); | ||
| 1475 | if ((name instanceof HTML.Tag) && | ||
| 1476 | (attr.getAttribute(name) instanceof AttributeSet)) { | ||
| 1477 | |||
| 1478 | AttributeSet check = (AttributeSet)attr. | ||
| 1479 | getAttribute(name); | ||
| 1480 | if (check.isDefined(attribute) && | ||
| 1481 | value.equals(check.getAttribute(attribute))) { | ||
| 1482 | return e; | ||
| 1483 | } | ||
| 1484 | } | ||
| 1485 | } | ||
| 1486 | } | ||
| 1487 | } | ||
| 1488 | return null; | ||
| 1489 | } | ||
| 1490 | |||
| 1491 | /** | ||
| 1492 | * Verifies the document has an <code>HTMLEditorKit.Parser</code> set. | ||
| 1493 | * If <code>getParser</code> returns <code>null</code>, this will throw an | ||
| 1494 | * IllegalStateException. | ||
| 1495 | * | ||
| 1496 | * @throws IllegalStateException if the document does not have a Parser | ||
| 1497 | */ | ||
| 1498 | private void verifyParser() { | ||
| 1499 | if (getParser() == null) { | ||
| 1500 | throw new IllegalStateException("No HTMLEditorKit.Parser"); | ||
| 1501 | } | ||
| 1502 | } | ||
| 1503 | |||
| 1504 | /** | ||
| 1505 | * Installs a default Parser if one has not been installed yet. | ||
| 1506 | */ | ||
| 1507 | private void installParserIfNecessary() { | ||
| 1508 | if (getParser() == null) { | ||
| 1509 | setParser(new HTMLEditorKit().getParser()); | ||
| 1510 | } | ||
| 1511 | } | ||
| 1512 | |||
| 1513 | /** | ||
| 1514 | * Inserts a string of HTML into the document at the given position. | ||
| 1515 | * <code>parent</code> is used to identify the location to insert the | ||
| 1516 | * <code>html</code>. If <code>parent</code> is a leaf this can have | ||
| 1517 | * unexpected results. | ||
| 1518 | */ | ||
| 1519 | private void insertHTML(Element parent, int offset, String html, | ||
| 1520 | boolean wantsTrailingNewline) | ||
| 1521 | throws BadLocationException, IOException { | ||
| 1522 | if (parent != null && html != null) { | ||
| 1523 | HTMLEditorKit.Parser parser = getParser(); | ||
| 1524 | if (parser != null) { | ||
| 1525 | int lastOffset = Math.max(0, offset - 1); | ||
| 1526 | Element charElement = getCharacterElement(lastOffset); | ||
| 1527 | Element commonParent = parent; | ||
| 1528 | int pop = 0; | ||
| 1529 | int push = 0; | ||
| 1530 | |||
| 1531 | if (parent.getStartOffset() > lastOffset) { | ||
| 1532 | while (commonParent != null && | ||
| 1533 | commonParent.getStartOffset() > lastOffset) { | ||
| 1534 | commonParent = commonParent.getParentElement(); | ||
| 1535 | push++; | ||
| 1536 | } | ||
| 1537 | if (commonParent == null) { | ||
| 1538 | throw new BadLocationException("No common parent", | ||
| 1539 | offset); | ||
| 1540 | } | ||
| 1541 | } | ||
| 1542 | while (charElement != null && charElement != commonParent) { | ||
| 1543 | pop++; | ||
| 1544 | charElement = charElement.getParentElement(); | ||
| 1545 | } | ||
| 1546 | if (charElement != null) { | ||
| 1547 | // Found it, do the insert. | ||
| 1548 | HTMLReader reader = new HTMLReader(offset, pop - 1, push, | ||
| 1549 | null, false, true, | ||
| 1550 | wantsTrailingNewline); | ||
| 1551 | |||
| 1552 | parser.parse(new StringReader(html), reader, true); | ||
| 1553 | reader.flush(); | ||
| 1554 | } | ||
| 1555 | } | ||
| 1556 | } | ||
| 1557 | } | ||
| 1558 | |||
| 1559 | /** | ||
| 1560 | * Removes child Elements of the passed in Element <code>e</code>. This | ||
| 1561 | * will do the necessary cleanup to ensure the element representing the | ||
| 1562 | * end character is correctly created. | ||
| 1563 | * <p>This is not a general purpose method, it assumes that <code>e</code> | ||
| 1564 | * will still have at least one child after the remove, and it assumes | ||
| 1565 | * the character at <code>e.getStartOffset() - 1</code> is a newline and | ||
| 1566 | * is of length 1. | ||
| 1567 | */ | ||
| 1568 | private void removeElements(Element e, int index, int count) throws BadLocationException { | ||
| 1569 | writeLock(); | ||
| 1570 | try { | ||
| 1571 | int start = e.getElement(index).getStartOffset(); | ||
| 1572 | int end = e.getElement(index + count - 1).getEndOffset(); | ||
| 1573 | if (end > getLength()) { | ||
| 1574 | removeElementsAtEnd(e, index, count, start, end); | ||
| 1575 | } | ||
| 1576 | else { | ||
| 1577 | removeElements(e, index, count, start, end); | ||
| 1578 | } | ||
| 1579 | } finally { | ||
| 1580 | writeUnlock(); | ||
| 1581 | } | ||
| 1582 | } | ||
| 1583 | |||
| 1584 | /** | ||
| 1585 | * Called to remove child elements of <code>e</code> when one of the | ||
| 1586 | * elements to remove is representing the end character. | ||
| 1587 | * <p>Since the Content will not allow a removal to the end character | ||
| 1588 | * this will do a remove from <code>start - 1</code> to <code>end</code>. | ||
| 1589 | * The end Element(s) will be removed, and the element representing | ||
| 1590 | * <code>start - 1</code> to <code>start</code> will be recreated. This | ||
| 1591 | * Element has to be recreated as after the content removal its offsets | ||
| 1592 | * become <code>start - 1</code> to <code>start - 1</code>. | ||
| 1593 | */ | ||
| 1594 | private void removeElementsAtEnd(Element e, int index, int count, | ||
| 1595 | int start, int end) throws BadLocationException { | ||
| 1596 | // index must be > 0 otherwise no insert would have happened. | ||
| 1597 | boolean isLeaf = (e.getElement(index - 1).isLeaf()); | ||
| 1598 | DefaultDocumentEvent dde = new DefaultDocumentEvent( | ||
| 1599 | start - 1, end - start + 1, DocumentEvent. | ||
| 1600 | EventType.REMOVE); | ||
| 1601 | |||
| 1602 | if (isLeaf) { | ||
| 1603 | Element endE = getCharacterElement(getLength()); | ||
| 1604 | // e.getElement(index - 1) should represent the newline. | ||
| 1605 | index--; | ||
| 1606 | if (endE.getParentElement() != e) { | ||
| 1607 | // The hiearchies don't match, we'll have to manually | ||
| 1608 | // recreate the leaf at e.getElement(index - 1) | ||
| 1609 | replace(dde, e, index, ++count, start, end, true, true); | ||
| 1610 | } | ||
| 1611 | else { | ||
| 1612 | // The hierarchies for the end Element and | ||
| 1613 | // e.getElement(index - 1), match, we can safely remove | ||
| 1614 | // the Elements and the end content will be aligned | ||
| 1615 | // appropriately. | ||
| 1616 | replace(dde, e, index, count, start, end, true, false); | ||
| 1617 | } | ||
| 1618 | } | ||
| 1619 | else { | ||
| 1620 | // Not a leaf, descend until we find the leaf representing | ||
| 1621 | // start - 1 and remove it. | ||
| 1622 | Element newLineE = e.getElement(index - 1); | ||
| 1623 | while (!newLineE.isLeaf()) { | ||
| 1624 | newLineE = newLineE.getElement(newLineE.getElementCount() - 1); | ||
| 1625 | } | ||
| 1626 | newLineE = newLineE.getParentElement(); | ||
| 1627 | replace(dde, e, index, count, start, end, false, false); | ||
| 1628 | replace(dde, newLineE, newLineE.getElementCount() - 1, 1, start, | ||
| 1629 | end, true, true); | ||
| 1630 | } | ||
| 1631 | postRemoveUpdate(dde); | ||
| 1632 | dde.end(); | ||
| 1633 | fireRemoveUpdate(dde); | ||
| 1634 | fireUndoableEditUpdate(new UndoableEditEvent(this, dde)); | ||
| 1635 | } | ||
| 1636 | |||
| 1637 | /** | ||
| 1638 | * This is used by <code>removeElementsAtEnd</code>, it removes | ||
| 1639 | * <code>count</code> elements starting at <code>start</code> from | ||
| 1640 | * <code>e</code>. If <code>remove</code> is true text of length | ||
| 1641 | * <code>start - 1</code> to <code>end - 1</code> is removed. If | ||
| 1642 | * <code>create</code> is true a new leaf is created of length 1. | ||
| 1643 | */ | ||
| 1644 | private void replace(DefaultDocumentEvent dde, Element e, int index, | ||
| 1645 | int count, int start, int end, boolean remove, | ||
| 1646 | boolean create) throws BadLocationException { | ||
| 1647 | Element[] added; | ||
| 1648 | AttributeSet attrs = e.getElement(index).getAttributes(); | ||
| 1649 | Element[] removed = new Element[count]; | ||
| 1650 | |||
| 1651 | for (int counter = 0; counter < count; counter++) { | ||
| 1652 | removed[counter] = e.getElement(counter + index); | ||
| 1653 | } | ||
| 1654 | if (remove) { | ||
| 1655 | UndoableEdit u = getContent().remove(start - 1, end - start); | ||
| 1656 | if (u != null) { | ||
| 1657 | dde.addEdit(u); | ||
| 1658 | } | ||
| 1659 | } | ||
| 1660 | if (create) { | ||
| 1661 | added = new Element[1]; | ||
| 1662 | added[0] = createLeafElement(e, attrs, start - 1, start); | ||
| 1663 | } | ||
| 1664 | else { | ||
| 1665 | added = new Element[0]; | ||
| 1666 | } | ||
| 1667 | dde.addEdit(new ElementEdit(e, index, removed, added)); | ||
| 1668 | ((AbstractDocument.BranchElement)e).replace( | ||
| 1669 | index, removed.length, added); | ||
| 1670 | } | ||
| 1671 | |||
| 1672 | /** | ||
| 1673 | * Called to remove child Elements when the end is not touched. | ||
| 1674 | */ | ||
| 1675 | private void removeElements(Element e, int index, int count, | ||
| 1676 | int start, int end) throws BadLocationException { | ||
| 1677 | Element[] removed = new Element[count]; | ||
| 1678 | Element[] added = new Element[0]; | ||
| 1679 | for (int counter = 0; counter < count; counter++) { | ||
| 1680 | removed[counter] = e.getElement(counter + index); | ||
| 1681 | } | ||
| 1682 | DefaultDocumentEvent dde = new DefaultDocumentEvent | ||
| 1683 | (start, end - start, DocumentEvent.EventType.REMOVE); | ||
| 1684 | ((AbstractDocument.BranchElement)e).replace(index, removed.length, | ||
| 1685 | added); | ||
| 1686 | dde.addEdit(new ElementEdit(e, index, removed, added)); | ||
| 1687 | UndoableEdit u = getContent().remove(start, end - start); | ||
| 1688 | if (u != null) { | ||
| 1689 | dde.addEdit(u); | ||
| 1690 | } | ||
| 1691 | postRemoveUpdate(dde); | ||
| 1692 | dde.end(); | ||
| 1693 | fireRemoveUpdate(dde); | ||
| 1694 | if (u != null) { | ||
| 1695 | fireUndoableEditUpdate(new UndoableEditEvent(this, dde)); | ||
| 1696 | } | ||
| 1697 | } | ||
| 1698 | |||
| 1699 | |||
| 1700 | // These two are provided for inner class access. The are named different | ||
| 1701 | // than the super class as the super class implementations are final. | ||
| 1702 | void obtainLock() { | ||
| 1703 | writeLock(); | ||
| 1704 | } | ||
| 1705 | |||
| 1706 | void releaseLock() { | ||
| 1707 | writeUnlock(); | ||
| 1708 | } | ||
| 1709 | |||
| 1710 | // | ||
| 1711 | // Provided for inner class access. | ||
| 1712 | // | ||
| 1713 | |||
| 1714 | /** | ||
| 1715 | * Notifies all listeners that have registered interest for | ||
| 1716 | * notification on this event type. The event instance | ||
| 1717 | * is lazily created using the parameters passed into | ||
| 1718 | * the fire method. | ||
| 1719 | * | ||
| 1720 | * @param e the event | ||
| 1721 | * @see EventListenerList | ||
| 1722 | */ | ||
| 1723 | protected void fireChangedUpdate(DocumentEvent e) { | ||
| 1724 | super.fireChangedUpdate(e); | ||
| 1725 | } | ||
| 1726 | |||
| 1727 | /** | ||
| 1728 | * Notifies all listeners that have registered interest for | ||
| 1729 | * notification on this event type. The event instance | ||
| 1730 | * is lazily created using the parameters passed into | ||
| 1731 | * the fire method. | ||
| 1732 | * | ||
| 1733 | * @param e the event | ||
| 1734 | * @see EventListenerList | ||
| 1735 | */ | ||
| 1736 | protected void fireUndoableEditUpdate(UndoableEditEvent e) { | ||
| 1737 | super.fireUndoableEditUpdate(e); | ||
| 1738 | } | ||
| 1739 | |||
| 1740 | boolean hasBaseTag() { | ||
| 1741 | return hasBaseTag; | ||
| 1742 | } | ||
| 1743 | |||
| 1744 | String getBaseTarget() { | ||
| 1745 | return baseTarget; | ||
| 1746 | } | ||
| 1747 | |||
| 1748 | /* | ||
| 1749 | * state defines whether the document is a frame document | ||
| 1750 | * or not. | ||
| 1751 | */ | ||
| 1752 | private boolean frameDocument = false; | ||
| 1753 | private boolean preservesUnknownTags = true; | ||
| 1754 | |||
| 1755 | /* | ||
| 1756 | * Used to store button groups for radio buttons in | ||
| 1757 | * a form. | ||
| 1758 | */ | ||
| 1759 | private HashMap<String, ButtonGroup> radioButtonGroupsMap; | ||
| 1760 | |||
| 1761 | /** | ||
| 1762 | * Document property for the number of tokens to buffer | ||
| 1763 | * before building an element subtree to represent them. | ||
| 1764 | */ | ||
| 1765 | static final String TokenThreshold = "token threshold"; | ||
| 1766 | |||
| 1767 | private static final int MaxThreshold = 10000; | ||
| 1768 | |||
| 1769 | private static final int StepThreshold = 5; | ||
| 1770 | |||
| 1771 | |||
| 1772 | /** | ||
| 1773 | * Document property key value. The value for the key will be a Vector | ||
| 1774 | * of Strings that are comments not found in the body. | ||
| 1775 | */ | ||
| 1776 | public static final String AdditionalComments = "AdditionalComments"; | ||
| 1777 | |||
| 1778 | /** | ||
| 1779 | * Document property key value. The value for the key will be a | ||
| 1780 | * String indicating the default type of stylesheet links. | ||
| 1781 | */ | ||
| 1782 | /* public */ static final String StyleType = "StyleType"; | ||
| 1783 | |||
| 1784 | /** | ||
| 1785 | * The location to resolve relative URLs against. By | ||
| 1786 | * default this will be the document's URL if the document | ||
| 1787 | * was loaded from a URL. If a base tag is found and | ||
| 1788 | * can be parsed, it will be used as the base location. | ||
| 1789 | */ | ||
| 1790 | URL base; | ||
| 1791 | |||
| 1792 | /** | ||
| 1793 | * does the document have base tag | ||
| 1794 | */ | ||
| 1795 | boolean hasBaseTag = false; | ||
| 1796 | |||
| 1797 | /** | ||
| 1798 | * BASE tag's TARGET attribute value | ||
| 1799 | */ | ||
| 1800 | private String baseTarget = null; | ||
| 1801 | |||
| 1802 | /** | ||
| 1803 | * The parser that is used when inserting html into the existing | ||
| 1804 | * document. | ||
| 1805 | */ | ||
| 1806 | private HTMLEditorKit.Parser parser; | ||
| 1807 | |||
| 1808 | /** | ||
| 1809 | * Used for inserts when a null AttributeSet is supplied. | ||
| 1810 | */ | ||
| 1811 | private static AttributeSet contentAttributeSet; | ||
| 1812 | |||
| 1813 | /** | ||
| 1814 | * Property Maps are registered under, will be a Hashtable. | ||
| 1815 | */ | ||
| 1816 | static String MAP_PROPERTY = "__MAP__"; | ||
| 1817 | |||
| 1818 | private static char[] NEWLINE; | ||
| 1819 | |||
| 1820 | /** | ||
| 1821 | * I18N property key. | ||
| 1822 | * | ||
| 1823 | * @see AbstractDocument#I18NProperty | ||
| 1824 | */ | ||
| 1825 | private static final String I18NProperty = "i18n"; | ||
| 1826 | |||
| 1827 | static { | ||
| 1828 | contentAttributeSet = new SimpleAttributeSet(); | ||
| 1829 | ((MutableAttributeSet)contentAttributeSet). | ||
| 1830 | addAttribute(StyleConstants.NameAttribute, | ||
| 1831 | HTML.Tag.CONTENT); | ||
| 1832 | NEWLINE = new char[1]; | ||
| 1833 | NEWLINE[0] = '\n'; | ||
| 1834 | } | ||
| 1835 | |||
| 1836 | |||
| 1837 | /** | ||
| 1838 | * An iterator to iterate over a particular type of | ||
| 1839 | * tag. The iterator is not thread safe. If reliable | ||
| 1840 | * access to the document is not already ensured by | ||
| 1841 | * the context under which the iterator is being used, | ||
| 1842 | * its use should be performed under the protection of | ||
| 1843 | * Document.render. | ||
| 1844 | */ | ||
| 1845 | public static abstract class Iterator { | ||
| 1846 | |||
| 1847 | /** | ||
| 1848 | * Return the attributes for this tag. | ||
| 1849 | * @return the <code>AttributeSet</code> for this tag, or | ||
| 1850 | * <code>null</code> if none can be found | ||
| 1851 | */ | ||
| 1852 | public abstract AttributeSet getAttributes(); | ||
| 1853 | |||
| 1854 | /** | ||
| 1855 | * Returns the start of the range for which the current occurrence of | ||
| 1856 | * the tag is defined and has the same attributes. | ||
| 1857 | * | ||
| 1858 | * @return the start of the range, or -1 if it can't be found | ||
| 1859 | */ | ||
| 1860 | public abstract int getStartOffset(); | ||
| 1861 | |||
| 1862 | /** | ||
| 1863 | * Returns the end of the range for which the current occurrence of | ||
| 1864 | * the tag is defined and has the same attributes. | ||
| 1865 | * | ||
| 1866 | * @return the end of the range | ||
| 1867 | */ | ||
| 1868 | public abstract int getEndOffset(); | ||
| 1869 | |||
| 1870 | /** | ||
| 1871 | * Move the iterator forward to the next occurrence | ||
| 1872 | * of the tag it represents. | ||
| 1873 | */ | ||
| 1874 | public abstract void next(); | ||
| 1875 | |||
| 1876 | /** | ||
| 1877 | * Indicates if the iterator is currently | ||
| 1878 | * representing an occurrence of a tag. If | ||
| 1879 | * false there are no more tags for this iterator. | ||
| 1880 | * @return true if the iterator is currently representing an | ||
| 1881 | * occurrence of a tag, otherwise returns false | ||
| 1882 | */ | ||
| 1883 | public abstract boolean isValid(); | ||
| 1884 | |||
| 1885 | /** | ||
| 1886 | * Type of tag this iterator represents. | ||
| 1887 | */ | ||
| 1888 | public abstract HTML.Tag getTag(); | ||
| 1889 | } | ||
| 1890 | |||
| 1891 | /** | ||
| 1892 | * An iterator to iterate over a particular type of tag. | ||
| 1893 | */ | ||
| 1894 | static class LeafIterator extends Iterator { | ||
| 1895 | |||
| 1896 | LeafIterator(HTML.Tag t, Document doc) { | ||
| 1897 | tag = t; | ||
| 1898 | pos = new ElementIterator(doc); | ||
| 1899 | endOffset = 0; | ||
| 1900 | next(); | ||
| 1901 | } | ||
| 1902 | |||
| 1903 | /** | ||
| 1904 | * Returns the attributes for this tag. | ||
| 1905 | * @return the <code>AttributeSet</code> for this tag, | ||
| 1906 | * or <code>null</code> if none can be found | ||
| 1907 | */ | ||
| 1908 | public AttributeSet getAttributes() { | ||
| 1909 | Element elem = pos.current(); | ||
| 1910 | if (elem != null) { | ||
| 1911 | AttributeSet a = (AttributeSet) | ||
| 1912 | elem.getAttributes().getAttribute(tag); | ||
| 1913 | if (a == null) { | ||
| 1914 | a = elem.getAttributes(); | ||
| 1915 | } | ||
| 1916 | return a; | ||
| 1917 | } | ||
| 1918 | return null; | ||
| 1919 | } | ||
| 1920 | |||
| 1921 | /** | ||
| 1922 | * Returns the start of the range for which the current occurrence of | ||
| 1923 | * the tag is defined and has the same attributes. | ||
| 1924 | * | ||
| 1925 | * @return the start of the range, or -1 if it can't be found | ||
| 1926 | */ | ||
| 1927 | public int getStartOffset() { | ||
| 1928 | Element elem = pos.current(); | ||
| 1929 | if (elem != null) { | ||
| 1930 | return elem.getStartOffset(); | ||
| 1931 | } | ||
| 1932 | return -1; | ||
| 1933 | } | ||
| 1934 | |||
| 1935 | /** | ||
| 1936 | * Returns the end of the range for which the current occurrence of | ||
| 1937 | * the tag is defined and has the same attributes. | ||
| 1938 | * | ||
| 1939 | * @return the end of the range | ||
| 1940 | */ | ||
| 1941 | public int getEndOffset() { | ||
| 1942 | return endOffset; | ||
| 1943 | } | ||
| 1944 | |||
| 1945 | /** | ||
| 1946 | * Moves the iterator forward to the next occurrence | ||
| 1947 | * of the tag it represents. | ||
| 1948 | */ | ||
| 1949 | public void next() { | ||
| 1950 | for (nextLeaf(pos); isValid(); nextLeaf(pos)) { | ||
| 1951 | Element elem = pos.current(); | ||
| 1952 | if (elem.getStartOffset() >= endOffset) { | ||
| 1953 | AttributeSet a = pos.current().getAttributes(); | ||
| 1954 | |||
| 1955 | if (a.isDefined(tag) || | ||
| 1956 | a.getAttribute(StyleConstants.NameAttribute) == tag) { | ||
| 1957 | |||
| 1958 | // we found the next one | ||
| 1959 | setEndOffset(); | ||
| 1960 | break; | ||
| 1961 | } | ||
| 1962 | } | ||
| 1963 | } | ||
| 1964 | } | ||
| 1965 | |||
| 1966 | /** | ||
| 1967 | * Returns the type of tag this iterator represents. | ||
| 1968 | * | ||
| 1969 | * @return the <code>HTML.Tag</code> that this iterator represents. | ||
| 1970 | * @see javax.swing.text.html.HTML.Tag | ||
| 1971 | */ | ||
| 1972 | public HTML.Tag getTag() { | ||
| 1973 | return tag; | ||
| 1974 | } | ||
| 1975 | |||
| 1976 | /** | ||
| 1977 | * Returns true if the current position is not <code>null</code>. | ||
| 1978 | * @return true if current position is not <code>null</code>, | ||
| 1979 | * otherwise returns false | ||
| 1980 | */ | ||
| 1981 | public boolean isValid() { | ||
| 1982 | return (pos.current() != null); | ||
| 1983 | } | ||
| 1984 | |||
| 1985 | /** | ||
| 1986 | * Moves the given iterator to the next leaf element. | ||
| 1987 | * @param iter the iterator to be scanned | ||
| 1988 | */ | ||
| 1989 | void nextLeaf(ElementIterator iter) { | ||
| 1990 | for (iter.next(); iter.current() != null; iter.next()) { | ||
| 1991 | Element e = iter.current(); | ||
| 1992 | if (e.isLeaf()) { | ||
| 1993 | break; | ||
| 1994 | } | ||
| 1995 | } | ||
| 1996 | } | ||
| 1997 | |||
| 1998 | /** | ||
| 1999 | * Marches a cloned iterator forward to locate the end | ||
| 2000 | * of the run. This sets the value of <code>endOffset</code>. | ||
| 2001 | */ | ||
| 2002 | void setEndOffset() { | ||
| 2003 | AttributeSet a0 = getAttributes(); | ||
| 2004 | endOffset = pos.current().getEndOffset(); | ||
| 2005 | ElementIterator fwd = (ElementIterator) pos.clone(); | ||
| 2006 | for (nextLeaf(fwd); fwd.current() != null; nextLeaf(fwd)) { | ||
| 2007 | Element e = fwd.current(); | ||
| 2008 | AttributeSet a1 = (AttributeSet) e.getAttributes().getAttribute(tag); | ||
| 2009 | if ((a1 == null) || (! a1.equals(a0))) { | ||
| 2010 | break; | ||
| 2011 | } | ||
| 2012 | endOffset = e.getEndOffset(); | ||
| 2013 | } | ||
| 2014 | } | ||
| 2015 | |||
| 2016 | private int endOffset; | ||
| 2017 | private HTML.Tag tag; | ||
| 2018 | private ElementIterator pos; | ||
| 2019 | |||
| 2020 | } | ||
| 2021 | |||
| 2022 | /** | ||
| 2023 | * An HTML reader to load an HTML document with an HTML | ||
| 2024 | * element structure. This is a set of callbacks from | ||
| 2025 | * the parser, implemented to create a set of elements | ||
| 2026 | * tagged with attributes. The parse builds up tokens | ||
| 2027 | * (ElementSpec) that describe the element subtree desired, | ||
| 2028 | * and burst it into the document under the protection of | ||
| 2029 | * a write lock using the insert method on the document | ||
| 2030 | * outer class. | ||
| 2031 | * <p> | ||
| 2032 | * The reader can be configured by registering actions | ||
| 2033 | * (of type <code>HTMLDocument.HTMLReader.TagAction</code>) | ||
| 2034 | * that describe how to handle the action. The idea behind | ||
| 2035 | * the actions provided is that the most natural text editing | ||
| 2036 | * operations can be provided if the element structure boils | ||
| 2037 | * down to paragraphs with runs of some kind of style | ||
| 2038 | * in them. Some things are more naturally specified | ||
| 2039 | * structurally, so arbitrary structure should be allowed | ||
| 2040 | * above the paragraphs, but will need to be edited with structural | ||
| 2041 | * actions. The implication of this is that some of the | ||
| 2042 | * HTML elements specified in the stream being parsed will | ||
| 2043 | * be collapsed into attributes, and in some cases paragraphs | ||
| 2044 | * will be synthesized. When HTML elements have been | ||
| 2045 | * converted to attributes, the attribute key will be of | ||
| 2046 | * type HTML.Tag, and the value will be of type AttributeSet | ||
| 2047 | * so that no information is lost. This enables many of the | ||
| 2048 | * existing actions to work so that the user can type input, | ||
| 2049 | * hit the return key, backspace, delete, etc and have a | ||
| 2050 | * reasonable result. Selections can be created, and attributes | ||
| 2051 | * applied or removed, etc. With this in mind, the work done | ||
| 2052 | * by the reader can be categorized into the following kinds | ||
| 2053 | * of tasks: | ||
| 2054 | * <dl> | ||
| 2055 | * <dt>Block | ||
| 2056 | * <dd>Build the structure like it's specified in the stream. | ||
| 2057 | * This produces elements that contain other elements. | ||
| 2058 | * <dt>Paragraph | ||
| 2059 | * <dd>Like block except that it's expected that the element | ||
| 2060 | * will be used with a paragraph view so a paragraph element | ||
| 2061 | * won't need to be synthesized. | ||
| 2062 | * <dt>Character | ||
| 2063 | * <dd>Contribute the element as an attribute that will start | ||
| 2064 | * and stop at arbitrary text locations. This will ultimately | ||
| 2065 | * be mixed into a run of text, with all of the currently | ||
| 2066 | * flattened HTML character elements. | ||
| 2067 | * <dt>Special | ||
| 2068 | * <dd>Produce an embedded graphical element. | ||
| 2069 | * <dt>Form | ||
| 2070 | * <dd>Produce an element that is like the embedded graphical | ||
| 2071 | * element, except that it also has a component model associated | ||
| 2072 | * with it. | ||
| 2073 | * <dt>Hidden | ||
| 2074 | * <dd>Create an element that is hidden from view when the | ||
| 2075 | * document is being viewed read-only, and visible when the | ||
| 2076 | * document is being edited. This is useful to keep the | ||
| 2077 | * model from losing information, and used to store things | ||
| 2078 | * like comments and unrecognized tags. | ||
| 2079 | * | ||
| 2080 | * </dl> | ||
| 2081 | * <p> | ||
| 2082 | * Currently, <APPLET>, <PARAM>, <MAP>, <AREA>, <LINK>, | ||
| 2083 | * <SCRIPT> and <STYLE> are unsupported. | ||
| 2084 | * | ||
| 2085 | * <p> | ||
| 2086 | * The assignment of the actions described is shown in the | ||
| 2087 | * following table for the tags defined in <code>HTML.Tag</code>.<P> | ||
| 2088 | * <table border=1 summary="HTML tags and assigned actions"> | ||
| 2089 | * <tr><th>Tag</th><th>Action</th></tr> | ||
| 2090 | * <tr><td><code>HTML.Tag.A</code> <td>CharacterAction | ||
| 2091 | * <tr><td><code>HTML.Tag.ADDRESS</code> <td>CharacterAction | ||
| 2092 | * <tr><td><code>HTML.Tag.APPLET</code> <td>HiddenAction | ||
| 2093 | * <tr><td><code>HTML.Tag.AREA</code> <td>AreaAction | ||
| 2094 | * <tr><td><code>HTML.Tag.B</code> <td>CharacterAction | ||
| 2095 | * <tr><td><code>HTML.Tag.BASE</code> <td>BaseAction | ||
| 2096 | * <tr><td><code>HTML.Tag.BASEFONT</code> <td>CharacterAction | ||
| 2097 | * <tr><td><code>HTML.Tag.BIG</code> <td>CharacterAction | ||
| 2098 | * <tr><td><code>HTML.Tag.BLOCKQUOTE</code><td>BlockAction | ||
| 2099 | * <tr><td><code>HTML.Tag.BODY</code> <td>BlockAction | ||
| 2100 | * <tr><td><code>HTML.Tag.BR</code> <td>SpecialAction | ||
| 2101 | * <tr><td><code>HTML.Tag.CAPTION</code> <td>BlockAction | ||
| 2102 | * <tr><td><code>HTML.Tag.CENTER</code> <td>BlockAction | ||
| 2103 | * <tr><td><code>HTML.Tag.CITE</code> <td>CharacterAction | ||
| 2104 | * <tr><td><code>HTML.Tag.CODE</code> <td>CharacterAction | ||
| 2105 | * <tr><td><code>HTML.Tag.DD</code> <td>BlockAction | ||
| 2106 | * <tr><td><code>HTML.Tag.DFN</code> <td>CharacterAction | ||
| 2107 | * <tr><td><code>HTML.Tag.DIR</code> <td>BlockAction | ||
| 2108 | * <tr><td><code>HTML.Tag.DIV</code> <td>BlockAction | ||
| 2109 | * <tr><td><code>HTML.Tag.DL</code> <td>BlockAction | ||
| 2110 | * <tr><td><code>HTML.Tag.DT</code> <td>ParagraphAction | ||
| 2111 | * <tr><td><code>HTML.Tag.EM</code> <td>CharacterAction | ||
| 2112 | * <tr><td><code>HTML.Tag.FONT</code> <td>CharacterAction | ||
| 2113 | * <tr><td><code>HTML.Tag.FORM</code> <td>As of 1.4 a BlockAction | ||
| 2114 | * <tr><td><code>HTML.Tag.FRAME</code> <td>SpecialAction | ||
| 2115 | * <tr><td><code>HTML.Tag.FRAMESET</code> <td>BlockAction | ||
| 2116 | * <tr><td><code>HTML.Tag.H1</code> <td>ParagraphAction | ||
| 2117 | * <tr><td><code>HTML.Tag.H2</code> <td>ParagraphAction | ||
| 2118 | * <tr><td><code>HTML.Tag.H3</code> <td>ParagraphAction | ||
| 2119 | * <tr><td><code>HTML.Tag.H4</code> <td>ParagraphAction | ||
| 2120 | * <tr><td><code>HTML.Tag.H5</code> <td>ParagraphAction | ||
| 2121 | * <tr><td><code>HTML.Tag.H6</code> <td>ParagraphAction | ||
| 2122 | * <tr><td><code>HTML.Tag.HEAD</code> <td>HeadAction | ||
| 2123 | * <tr><td><code>HTML.Tag.HR</code> <td>SpecialAction | ||
| 2124 | * <tr><td><code>HTML.Tag.HTML</code> <td>BlockAction | ||
| 2125 | * <tr><td><code>HTML.Tag.I</code> <td>CharacterAction | ||
| 2126 | * <tr><td><code>HTML.Tag.IMG</code> <td>SpecialAction | ||
| 2127 | * <tr><td><code>HTML.Tag.INPUT</code> <td>FormAction | ||
| 2128 | * <tr><td><code>HTML.Tag.ISINDEX</code> <td>IsndexAction | ||
| 2129 | * <tr><td><code>HTML.Tag.KBD</code> <td>CharacterAction | ||
| 2130 | * <tr><td><code>HTML.Tag.LI</code> <td>BlockAction | ||
| 2131 | * <tr><td><code>HTML.Tag.LINK</code> <td>LinkAction | ||
| 2132 | * <tr><td><code>HTML.Tag.MAP</code> <td>MapAction | ||
| 2133 | * <tr><td><code>HTML.Tag.MENU</code> <td>BlockAction | ||
| 2134 | * <tr><td><code>HTML.Tag.META</code> <td>MetaAction | ||
| 2135 | * <tr><td><code>HTML.Tag.NOFRAMES</code> <td>BlockAction | ||
| 2136 | * <tr><td><code>HTML.Tag.OBJECT</code> <td>SpecialAction | ||
| 2137 | * <tr><td><code>HTML.Tag.OL</code> <td>BlockAction | ||
| 2138 | * <tr><td><code>HTML.Tag.OPTION</code> <td>FormAction | ||
| 2139 | * <tr><td><code>HTML.Tag.P</code> <td>ParagraphAction | ||
| 2140 | * <tr><td><code>HTML.Tag.PARAM</code> <td>HiddenAction | ||
| 2141 | * <tr><td><code>HTML.Tag.PRE</code> <td>PreAction | ||
| 2142 | * <tr><td><code>HTML.Tag.SAMP</code> <td>CharacterAction | ||
| 2143 | * <tr><td><code>HTML.Tag.SCRIPT</code> <td>HiddenAction | ||
| 2144 | * <tr><td><code>HTML.Tag.SELECT</code> <td>FormAction | ||
| 2145 | * <tr><td><code>HTML.Tag.SMALL</code> <td>CharacterAction | ||
| 2146 | * <tr><td><code>HTML.Tag.STRIKE</code> <td>CharacterAction | ||
| 2147 | * <tr><td><code>HTML.Tag.S</code> <td>CharacterAction | ||
| 2148 | * <tr><td><code>HTML.Tag.STRONG</code> <td>CharacterAction | ||
| 2149 | * <tr><td><code>HTML.Tag.STYLE</code> <td>StyleAction | ||
| 2150 | * <tr><td><code>HTML.Tag.SUB</code> <td>CharacterAction | ||
| 2151 | * <tr><td><code>HTML.Tag.SUP</code> <td>CharacterAction | ||
| 2152 | * <tr><td><code>HTML.Tag.TABLE</code> <td>BlockAction | ||
| 2153 | * <tr><td><code>HTML.Tag.TD</code> <td>BlockAction | ||
| 2154 | * <tr><td><code>HTML.Tag.TEXTAREA</code> <td>FormAction | ||
| 2155 | * <tr><td><code>HTML.Tag.TH</code> <td>BlockAction | ||
| 2156 | * <tr><td><code>HTML.Tag.TITLE</code> <td>TitleAction | ||
| 2157 | * <tr><td><code>HTML.Tag.TR</code> <td>BlockAction | ||
| 2158 | * <tr><td><code>HTML.Tag.TT</code> <td>CharacterAction | ||
| 2159 | * <tr><td><code>HTML.Tag.U</code> <td>CharacterAction | ||
| 2160 | * <tr><td><code>HTML.Tag.UL</code> <td>BlockAction | ||
| 2161 | * <tr><td><code>HTML.Tag.VAR</code> <td>CharacterAction | ||
| 2162 | * </table> | ||
| 2163 | * <p> | ||
| 2164 | * Once </html> is encountered, the Actions are no longer notified. | ||
| 2165 | */ | ||
| 2166 | public class HTMLReader extends HTMLEditorKit.ParserCallback { | ||
| 2167 | |||
| 2168 | public HTMLReader(int offset) { | ||
| 2169 | this(offset, 0, 0, null); | ||
| 2170 | } | ||
| 2171 | |||
| 2172 | public HTMLReader(int offset, int popDepth, int pushDepth, | ||
| 2173 | HTML.Tag insertTag) { | ||
| 2174 | this(offset, popDepth, pushDepth, insertTag, true, false, true); | ||
| 2175 | } | ||
| 2176 | |||
| 2177 | /** | ||
| 2178 | * Generates a RuntimeException (will eventually generate | ||
| 2179 | * a BadLocationException when API changes are alloced) if inserting | ||
| 2180 | * into non empty document, <code>insertTag</code> is | ||
| 2181 | * non-<code>null</code>, and <code>offset</code> is not in the body. | ||
| 2182 | */ | ||
| 2183 | // PENDING(sky): Add throws BadLocationException and remove | ||
| 2184 | // RuntimeException | ||
| 2185 | HTMLReader(int offset, int popDepth, int pushDepth, | ||
| 2186 | HTML.Tag insertTag, boolean insertInsertTag, | ||
| 2187 | boolean insertAfterImplied, boolean wantsTrailingNewline) { | ||
| 2188 | emptyDocument = (getLength() == 0); | ||
| 2189 | isStyleCSS = "text/css".equals(getDefaultStyleSheetType()); | ||
| 2190 | this.offset = offset; | ||
| 2191 | threshold = HTMLDocument.this.getTokenThreshold(); | ||
| 2192 | tagMap = new Hashtable<HTML.Tag, TagAction>(57); | ||
| 2193 | TagAction na = new TagAction(); | ||
| 2194 | TagAction ba = new BlockAction(); | ||
| 2195 | TagAction pa = new ParagraphAction(); | ||
| 2196 | TagAction ca = new CharacterAction(); | ||
| 2197 | TagAction sa = new SpecialAction(); | ||
| 2198 | TagAction fa = new FormAction(); | ||
| 2199 | TagAction ha = new HiddenAction(); | ||
| 2200 | TagAction conv = new ConvertAction(); | ||
| 2201 | |||
| 2202 | // register handlers for the well known tags | ||
| 2203 | tagMap.put(HTML.Tag.A, new AnchorAction()); | ||
| 2204 | tagMap.put(HTML.Tag.ADDRESS, ca); | ||
| 2205 | tagMap.put(HTML.Tag.APPLET, ha); | ||
| 2206 | tagMap.put(HTML.Tag.AREA, new AreaAction()); | ||
| 2207 | tagMap.put(HTML.Tag.B, conv); | ||
| 2208 | tagMap.put(HTML.Tag.BASE, new BaseAction()); | ||
| 2209 | tagMap.put(HTML.Tag.BASEFONT, ca); | ||
| 2210 | tagMap.put(HTML.Tag.BIG, ca); | ||
| 2211 | tagMap.put(HTML.Tag.BLOCKQUOTE, ba); | ||
| 2212 | tagMap.put(HTML.Tag.BODY, ba); | ||
| 2213 | tagMap.put(HTML.Tag.BR, sa); | ||
| 2214 | tagMap.put(HTML.Tag.CAPTION, ba); | ||
| 2215 | tagMap.put(HTML.Tag.CENTER, ba); | ||
| 2216 | tagMap.put(HTML.Tag.CITE, ca); | ||
| 2217 | tagMap.put(HTML.Tag.CODE, ca); | ||
| 2218 | tagMap.put(HTML.Tag.DD, ba); | ||
| 2219 | tagMap.put(HTML.Tag.DFN, ca); | ||
| 2220 | tagMap.put(HTML.Tag.DIR, ba); | ||
| 2221 | tagMap.put(HTML.Tag.DIV, ba); | ||
| 2222 | tagMap.put(HTML.Tag.DL, ba); | ||
| 2223 | tagMap.put(HTML.Tag.DT, pa); | ||
| 2224 | tagMap.put(HTML.Tag.EM, ca); | ||
| 2225 | tagMap.put(HTML.Tag.FONT, conv); | ||
| 2226 | tagMap.put(HTML.Tag.FORM, new FormTagAction()); | ||
| 2227 | tagMap.put(HTML.Tag.FRAME, sa); | ||
| 2228 | tagMap.put(HTML.Tag.FRAMESET, ba); | ||
| 2229 | tagMap.put(HTML.Tag.H1, pa); | ||
| 2230 | tagMap.put(HTML.Tag.H2, pa); | ||
| 2231 | tagMap.put(HTML.Tag.H3, pa); | ||
| 2232 | tagMap.put(HTML.Tag.H4, pa); | ||
| 2233 | tagMap.put(HTML.Tag.H5, pa); | ||
| 2234 | tagMap.put(HTML.Tag.H6, pa); | ||
| 2235 | tagMap.put(HTML.Tag.HEAD, new HeadAction()); | ||
| 2236 | tagMap.put(HTML.Tag.HR, sa); | ||
| 2237 | tagMap.put(HTML.Tag.HTML, ba); | ||
| 2238 | tagMap.put(HTML.Tag.I, conv); | ||
| 2239 | tagMap.put(HTML.Tag.IMG, sa); | ||
| 2240 | tagMap.put(HTML.Tag.INPUT, fa); | ||
| 2241 | tagMap.put(HTML.Tag.ISINDEX, new IsindexAction()); | ||
| 2242 | tagMap.put(HTML.Tag.KBD, ca); | ||
| 2243 | tagMap.put(HTML.Tag.LI, ba); | ||
| 2244 | tagMap.put(HTML.Tag.LINK, new LinkAction()); | ||
| 2245 | tagMap.put(HTML.Tag.MAP, new MapAction()); | ||
| 2246 | tagMap.put(HTML.Tag.MENU, ba); | ||
| 2247 | tagMap.put(HTML.Tag.META, new MetaAction()); | ||
| 2248 | tagMap.put(HTML.Tag.NOBR, ca); | ||
| 2249 | tagMap.put(HTML.Tag.NOFRAMES, ba); | ||
| 2250 | tagMap.put(HTML.Tag.OBJECT, sa); | ||
| 2251 | tagMap.put(HTML.Tag.OL, ba); | ||
| 2252 | tagMap.put(HTML.Tag.OPTION, fa); | ||
| 2253 | tagMap.put(HTML.Tag.P, pa); | ||
| 2254 | tagMap.put(HTML.Tag.PARAM, new ObjectAction()); | ||
| 2255 | tagMap.put(HTML.Tag.PRE, new PreAction()); | ||
| 2256 | tagMap.put(HTML.Tag.SAMP, ca); | ||
| 2257 | tagMap.put(HTML.Tag.SCRIPT, ha); | ||
| 2258 | tagMap.put(HTML.Tag.SELECT, fa); | ||
| 2259 | tagMap.put(HTML.Tag.SMALL, ca); | ||
| 2260 | tagMap.put(HTML.Tag.SPAN, ca); | ||
| 2261 | tagMap.put(HTML.Tag.STRIKE, conv); | ||
| 2262 | tagMap.put(HTML.Tag.S, ca); | ||
| 2263 | tagMap.put(HTML.Tag.STRONG, ca); | ||
| 2264 | tagMap.put(HTML.Tag.STYLE, new StyleAction()); | ||
| 2265 | tagMap.put(HTML.Tag.SUB, conv); | ||
| 2266 | tagMap.put(HTML.Tag.SUP, conv); | ||
| 2267 | tagMap.put(HTML.Tag.TABLE, ba); | ||
| 2268 | tagMap.put(HTML.Tag.TD, ba); | ||
| 2269 | tagMap.put(HTML.Tag.TEXTAREA, fa); | ||
| 2270 | tagMap.put(HTML.Tag.TH, ba); | ||
| 2271 | tagMap.put(HTML.Tag.TITLE, new TitleAction()); | ||
| 2272 | tagMap.put(HTML.Tag.TR, ba); | ||
| 2273 | tagMap.put(HTML.Tag.TT, ca); | ||
| 2274 | tagMap.put(HTML.Tag.U, conv); | ||
| 2275 | tagMap.put(HTML.Tag.UL, ba); | ||
| 2276 | tagMap.put(HTML.Tag.VAR, ca); | ||
| 2277 | |||
| 2278 | if (insertTag != null) { | ||
| 2279 | this.insertTag = insertTag; | ||
| 2280 | this.popDepth = popDepth; | ||
| 2281 | this.pushDepth = pushDepth; | ||
| 2282 | this.insertInsertTag = insertInsertTag; | ||
| 2283 | foundInsertTag = false; | ||
| 2284 | } | ||
| 2285 | else { | ||
| 2286 | foundInsertTag = true; | ||
| 2287 | } | ||
| 2288 | if (insertAfterImplied) { | ||
| 2289 | this.popDepth = popDepth; | ||
| 2290 | this.pushDepth = pushDepth; | ||
| 2291 | this.insertAfterImplied = true; | ||
| 2292 | foundInsertTag = false; | ||
| 2293 | midInsert = false; | ||
| 2294 | this.insertInsertTag = true; | ||
| 2295 | this.wantsTrailingNewline = wantsTrailingNewline; | ||
| 2296 | } | ||
| 2297 | else { | ||
| 2298 | midInsert = (!emptyDocument && insertTag == null); | ||
| 2299 | if (midInsert) { | ||
| 2300 | generateEndsSpecsForMidInsert(); | ||
| 2301 | } | ||
| 2302 | } | ||
| 2303 | |||
| 2304 | /** | ||
| 2305 | * This block initializes the <code>inParagraph</code> flag. | ||
| 2306 | * It is left in <code>false</code> value automatically | ||
| 2307 | * if the target document is empty or future inserts | ||
| 2308 | * were positioned into the 'body' tag. | ||
| 2309 | */ | ||
| 2310 | if (!emptyDocument && !midInsert) { | ||
| 2311 | int targetOffset = Math.max(this.offset - 1, 0); | ||
| 2312 | Element elem = | ||
| 2313 | HTMLDocument.this.getCharacterElement(targetOffset); | ||
| 2314 | /* Going up by the left document structure path */ | ||
| 2315 | for (int i = 0; i <= this.popDepth; i++) { | ||
| 2316 | elem = elem.getParentElement(); | ||
| 2317 | } | ||
| 2318 | /* Going down by the right document structure path */ | ||
| 2319 | for (int i = 0; i < this.pushDepth; i++) { | ||
| 2320 | int index = elem.getElementIndex(this.offset); | ||
| 2321 | elem = elem.getElement(index); | ||
| 2322 | } | ||
| 2323 | AttributeSet attrs = elem.getAttributes(); | ||
| 2324 | if (attrs != null) { | ||
| 2325 | HTML.Tag tagToInsertInto = | ||
| 2326 | (HTML.Tag) attrs.getAttribute(StyleConstants.NameAttribute); | ||
| 2327 | if (tagToInsertInto != null) { | ||
| 2328 | this.inParagraph = tagToInsertInto.isParagraph(); | ||
| 2329 | } | ||
| 2330 | } | ||
| 2331 | } | ||
| 2332 | } | ||
| 2333 | |||
| 2334 | /** | ||
| 2335 | * Generates an initial batch of end <code>ElementSpecs</code> | ||
| 2336 | * in parseBuffer to position future inserts into the body. | ||
| 2337 | */ | ||
| 2338 | private void generateEndsSpecsForMidInsert() { | ||
| 2339 | int count = heightToElementWithName(HTML.Tag.BODY, | ||
| 2340 | Math.max(0, offset - 1)); | ||
| 2341 | boolean joinNext = false; | ||
| 2342 | |||
| 2343 | if (count == -1 && offset > 0) { | ||
| 2344 | count = heightToElementWithName(HTML.Tag.BODY, offset); | ||
| 2345 | if (count != -1) { | ||
| 2346 | // Previous isn't in body, but current is. Have to | ||
| 2347 | // do some end specs, followed by join next. | ||
| 2348 | count = depthTo(offset - 1) - 1; | ||
| 2349 | joinNext = true; | ||
| 2350 | } | ||
| 2351 | } | ||
| 2352 | if (count == -1) { | ||
| 2353 | throw new RuntimeException("Must insert new content into body element-"); | ||
| 2354 | } | ||
| 2355 | if (count != -1) { | ||
| 2356 | // Insert a newline, if necessary. | ||
| 2357 | try { | ||
| 2358 | if (!joinNext && offset > 0 && | ||
| 2359 | !getText(offset - 1, 1).equals("\n")) { | ||
| 2360 | SimpleAttributeSet newAttrs = new SimpleAttributeSet(); | ||
| 2361 | newAttrs.addAttribute(StyleConstants.NameAttribute, | ||
| 2362 | HTML.Tag.CONTENT); | ||
| 2363 | ElementSpec spec = new ElementSpec(newAttrs, | ||
| 2364 | ElementSpec.ContentType, NEWLINE, 0, 1); | ||
| 2365 | parseBuffer.addElement(spec); | ||
| 2366 | } | ||
| 2367 | // Should never throw, but will catch anyway. | ||
| 2368 | } catch (BadLocationException ble) {} | ||
| 2369 | while (count-- > 0) { | ||
| 2370 | parseBuffer.addElement(new ElementSpec | ||
| 2371 | (null, ElementSpec.EndTagType)); | ||
| 2372 | } | ||
| 2373 | if (joinNext) { | ||
| 2374 | ElementSpec spec = new ElementSpec(null, ElementSpec. | ||
| 2375 | StartTagType); | ||
| 2376 | |||
| 2377 | spec.setDirection(ElementSpec.JoinNextDirection); | ||
| 2378 | parseBuffer.addElement(spec); | ||
| 2379 | } | ||
| 2380 | } | ||
| 2381 | // We should probably throw an exception if (count == -1) | ||
| 2382 | // Or look for the body and reset the offset. | ||
| 2383 | } | ||
| 2384 | |||
| 2385 | /** | ||
| 2386 | * @return number of parents to reach the child at offset. | ||
| 2387 | */ | ||
| 2388 | private int depthTo(int offset) { | ||
| 2389 | Element e = getDefaultRootElement(); | ||
| 2390 | int count = 0; | ||
| 2391 | |||
| 2392 | while (!e.isLeaf()) { | ||
| 2393 | count++; | ||
| 2394 | e = e.getElement(e.getElementIndex(offset)); | ||
| 2395 | } | ||
| 2396 | return count; | ||
| 2397 | } | ||
| 2398 | |||
| 2399 | /** | ||
| 2400 | * @return number of parents of the leaf at <code>offset</code> | ||
| 2401 | * until a parent with name, <code>name</code> has been | ||
| 2402 | * found. -1 indicates no matching parent with | ||
| 2403 | * <code>name</code>. | ||
| 2404 | */ | ||
| 2405 | private int heightToElementWithName(Object name, int offset) { | ||
| 2406 | Element e = getCharacterElement(offset).getParentElement(); | ||
| 2407 | int count = 0; | ||
| 2408 | |||
| 2409 | while (e != null && e.getAttributes().getAttribute | ||
| 2410 | (StyleConstants.NameAttribute) != name) { | ||
| 2411 | count++; | ||
| 2412 | e = e.getParentElement(); | ||
| 2413 | } | ||
| 2414 | return (e == null) ? -1 : count; | ||
| 2415 | } | ||
| 2416 | |||
| 2417 | /** | ||
| 2418 | * This will make sure there aren't two BODYs (the second is | ||
| 2419 | * typically created when you do a remove all, and then an insert). | ||
| 2420 | */ | ||
| 2421 | private void adjustEndElement() { | ||
| 2422 | int length = getLength(); | ||
| 2423 | if (length == 0) { | ||
| 2424 | return; | ||
| 2425 | } | ||
| 2426 | obtainLock(); | ||
| 2427 | try { | ||
| 2428 | Element[] pPath = getPathTo(length - 1); | ||
| 2429 | int pLength = pPath.length; | ||
| 2430 | if (pLength > 1 && pPath[1].getAttributes().getAttribute | ||
| 2431 | (StyleConstants.NameAttribute) == HTML.Tag.BODY && | ||
| 2432 | pPath[1].getEndOffset() == length) { | ||
| 2433 | String lastText = getText(length - 1, 1); | ||
| 2434 | DefaultDocumentEvent event; | ||
| 2435 | Element[] added; | ||
| 2436 | Element[] removed; | ||
| 2437 | int index; | ||
| 2438 | // Remove the fake second body. | ||
| 2439 | added = new Element[0]; | ||
| 2440 | removed = new Element[1]; | ||
| 2441 | index = pPath[0].getElementIndex(length); | ||
| 2442 | removed[0] = pPath[0].getElement(index); | ||
| 2443 | ((BranchElement)pPath[0]).replace(index, 1, added); | ||
| 2444 | ElementEdit firstEdit = new ElementEdit(pPath[0], index, | ||
| 2445 | removed, added); | ||
| 2446 | |||
| 2447 | // Insert a new element to represent the end that the | ||
| 2448 | // second body was representing. | ||
| 2449 | SimpleAttributeSet sas = new SimpleAttributeSet(); | ||
| 2450 | sas.addAttribute(StyleConstants.NameAttribute, | ||
| 2451 | HTML.Tag.CONTENT); | ||
| 2452 | sas.addAttribute(IMPLIED_CR, Boolean.TRUE); | ||
| 2453 | added = new Element[1]; | ||
| 2454 | added[0] = createLeafElement(pPath[pLength - 1], | ||
| 2455 | sas, length, length + 1); | ||
| 2456 | index = pPath[pLength - 1].getElementCount(); | ||
| 2457 | ((BranchElement)pPath[pLength - 1]).replace(index, 0, | ||
| 2458 | added); | ||
| 2459 | event = new DefaultDocumentEvent(length, 1, | ||
| 2460 | DocumentEvent.EventType.CHANGE); | ||
| 2461 | event.addEdit(new ElementEdit(pPath[pLength - 1], | ||
| 2462 | index, new Element[0], added)); | ||
| 2463 | event.addEdit(firstEdit); | ||
| 2464 | event.end(); | ||
| 2465 | fireChangedUpdate(event); | ||
| 2466 | fireUndoableEditUpdate(new UndoableEditEvent(this, event)); | ||
| 2467 | |||
| 2468 | if (lastText.equals("\n")) { | ||
| 2469 | // We now have two \n's, one part of the Document. | ||
| 2470 | // We need to remove one | ||
| 2471 | event = new DefaultDocumentEvent(length - 1, 1, | ||
| 2472 | DocumentEvent.EventType.REMOVE); | ||
| 2473 | removeUpdate(event); | ||
| 2474 | UndoableEdit u = getContent().remove(length - 1, 1); | ||
| 2475 | if (u != null) { | ||
| 2476 | event.addEdit(u); | ||
| 2477 | } | ||
| 2478 | postRemoveUpdate(event); | ||
| 2479 | // Mark the edit as done. | ||
| 2480 | event.end(); | ||
| 2481 | fireRemoveUpdate(event); | ||
| 2482 | fireUndoableEditUpdate(new UndoableEditEvent( | ||
| 2483 | this, event)); | ||
| 2484 | } | ||
| 2485 | } | ||
| 2486 | } | ||
| 2487 | catch (BadLocationException ble) { | ||
| 2488 | } | ||
| 2489 | finally { | ||
| 2490 | releaseLock(); | ||
| 2491 | } | ||
| 2492 | } | ||
| 2493 | |||
| 2494 | private Element[] getPathTo(int offset) { | ||
| 2495 | Stack<Element> elements = new Stack<Element>(); | ||
| 2496 | Element e = getDefaultRootElement(); | ||
| 2497 | int index; | ||
| 2498 | while (!e.isLeaf()) { | ||
| 2499 | elements.push(e); | ||
| 2500 | e = e.getElement(e.getElementIndex(offset)); | ||
| 2501 | } | ||
| 2502 | Element[] retValue = new Element[elements.size()]; | ||
| 2503 | elements.copyInto(retValue); | ||
| 2504 | return retValue; | ||
| 2505 | } | ||
| 2506 | |||
| 2507 | // -- HTMLEditorKit.ParserCallback methods -------------------- | ||
| 2508 | |||
| 2509 | /** | ||
| 2510 | * The last method called on the reader. It allows | ||
| 2511 | * any pending changes to be flushed into the document. | ||
| 2512 | * Since this is currently loading synchronously, the entire | ||
| 2513 | * set of changes are pushed in at this point. | ||
| 2514 | */ | ||
| 2515 | public void flush() throws BadLocationException { | ||
| 2516 | if (emptyDocument && !insertAfterImplied) { | ||
| 2517 | if (HTMLDocument.this.getLength() > 0 || | ||
| 2518 | parseBuffer.size() > 0) { | ||
| 2519 | flushBuffer(true); | ||
| 2520 | adjustEndElement(); | ||
| 2521 | } | ||
| 2522 | // We won't insert when | ||
| 2523 | } | ||
| 2524 | else { | ||
| 2525 | flushBuffer(true); | ||
| 2526 | } | ||
| 2527 | } | ||
| 2528 | |||
| 2529 | /** | ||
| 2530 | * Called by the parser to indicate a block of text was | ||
| 2531 | * encountered. | ||
| 2532 | */ | ||
| 2533 | public void handleText(char[] data, int pos) { | ||
| 2534 | if (receivedEndHTML || (midInsert && !inBody)) { | ||
| 2535 | return; | ||
| 2536 | } | ||
| 2537 | |||
| 2538 | // see if complex glyph layout support is needed | ||
| 2539 | if(HTMLDocument.this.getProperty(I18NProperty).equals( Boolean.FALSE ) ) { | ||
| 2540 | // if a default direction of right-to-left has been specified, | ||
| 2541 | // we want complex layout even if the text is all left to right. | ||
| 2542 | Object d = getProperty(TextAttribute.RUN_DIRECTION); | ||
| 2543 | if ((d != null) && (d.equals(TextAttribute.RUN_DIRECTION_RTL))) { | ||
| 2544 | HTMLDocument.this.putProperty( I18NProperty, Boolean.TRUE); | ||
| 2545 | } else { | ||
| 2546 | if (SwingUtilities2.isComplexLayout(data, 0, data.length)) { | ||
| 2547 | HTMLDocument.this.putProperty( I18NProperty, Boolean.TRUE); | ||
| 2548 | } | ||
| 2549 | } | ||
| 2550 | } | ||
| 2551 | |||
| 2552 | if (inTextArea) { | ||
| 2553 | textAreaContent(data); | ||
| 2554 | } else if (inPre) { | ||
| 2555 | preContent(data); | ||
| 2556 | } else if (inTitle) { | ||
| 2557 | putProperty(Document.TitleProperty, new String(data)); | ||
| 2558 | } else if (option != null) { | ||
| 2559 | option.setLabel(new String(data)); | ||
| 2560 | } else if (inStyle) { | ||
| 2561 | if (styles != null) { | ||
| 2562 | styles.addElement(new String(data)); | ||
| 2563 | } | ||
| 2564 | } else if (inBlock > 0) { | ||
| 2565 | if (!foundInsertTag && insertAfterImplied) { | ||
| 2566 | // Assume content should be added. | ||
| 2567 | foundInsertTag(false); | ||
| 2568 | foundInsertTag = true; | ||
| 2569 | inParagraph = impliedP = true; | ||
| 2570 | } | ||
| 2571 | if (data.length >= 1) { | ||
| 2572 | addContent(data, 0, data.length); | ||
| 2573 | } | ||
| 2574 | } | ||
| 2575 | } | ||
| 2576 | |||
| 2577 | /** | ||
| 2578 | * Callback from the parser. Route to the appropriate | ||
| 2579 | * handler for the tag. | ||
| 2580 | */ | ||
| 2581 | public void handleStartTag(HTML.Tag t, MutableAttributeSet a, int pos) { | ||
| 2582 | if (receivedEndHTML) { | ||
| 2583 | return; | ||
| 2584 | } | ||
| 2585 | if (midInsert && !inBody) { | ||
| 2586 | if (t == HTML.Tag.BODY) { | ||
| 2587 | inBody = true; | ||
| 2588 | // Increment inBlock since we know we are in the body, | ||
| 2589 | // this is needed incase an implied-p is needed. If | ||
| 2590 | // inBlock isn't incremented, and an implied-p is | ||
| 2591 | // encountered, addContent won't be called! | ||
| 2592 | inBlock++; | ||
| 2593 | } | ||
| 2594 | return; | ||
| 2595 | } | ||
| 2596 | if (!inBody && t == HTML.Tag.BODY) { | ||
| 2597 | inBody = true; | ||
| 2598 | } | ||
| 2599 | if (isStyleCSS && a.isDefined(HTML.Attribute.STYLE)) { | ||
| 2600 | // Map the style attributes. | ||
| 2601 | String decl = (String)a.getAttribute(HTML.Attribute.STYLE); | ||
| 2602 | a.removeAttribute(HTML.Attribute.STYLE); | ||
| 2603 | styleAttributes = getStyleSheet().getDeclaration(decl); | ||
| 2604 | a.addAttributes(styleAttributes); | ||
| 2605 | } | ||
| 2606 | else { | ||
| 2607 | styleAttributes = null; | ||
| 2608 | } | ||
| 2609 | TagAction action = tagMap.get(t); | ||
| 2610 | |||
| 2611 | if (action != null) { | ||
| 2612 | action.start(t, a); | ||
| 2613 | } | ||
| 2614 | } | ||
| 2615 | |||
| 2616 | public void handleComment(char[] data, int pos) { | ||
| 2617 | if (receivedEndHTML) { | ||
| 2618 | addExternalComment(new String(data)); | ||
| 2619 | return; | ||
| 2620 | } | ||
| 2621 | if (inStyle) { | ||
| 2622 | if (styles != null) { | ||
| 2623 | styles.addElement(new String(data)); | ||
| 2624 | } | ||
| 2625 | } | ||
| 2626 | else if (getPreservesUnknownTags()) { | ||
| 2627 | if (inBlock == 0 && (foundInsertTag || | ||
| 2628 | insertTag != HTML.Tag.COMMENT)) { | ||
| 2629 | // Comment outside of body, will not be able to show it, | ||
| 2630 | // but can add it as a property on the Document. | ||
| 2631 | addExternalComment(new String(data)); | ||
| 2632 | return; | ||
| 2633 | } | ||
| 2634 | SimpleAttributeSet sas = new SimpleAttributeSet(); | ||
| 2635 | sas.addAttribute(HTML.Attribute.COMMENT, new String(data)); | ||
| 2636 | addSpecialElement(HTML.Tag.COMMENT, sas); | ||
| 2637 | } | ||
| 2638 | |||
| 2639 | TagAction action = tagMap.get(HTML.Tag.COMMENT); | ||
| 2640 | if (action != null) { | ||
| 2641 | action.start(HTML.Tag.COMMENT, new SimpleAttributeSet()); | ||
| 2642 | action.end(HTML.Tag.COMMENT); | ||
| 2643 | } | ||
| 2644 | } | ||
| 2645 | |||
| 2646 | /** | ||
| 2647 | * Adds the comment <code>comment</code> to the set of comments | ||
| 2648 | * maintained outside of the scope of elements. | ||
| 2649 | */ | ||
| 2650 | private void addExternalComment(String comment) { | ||
| 2651 | Object comments = getProperty(AdditionalComments); | ||
| 2652 | if (comments != null && !(comments instanceof Vector)) { | ||
| 2653 | // No place to put comment. | ||
| 2654 | return; | ||
| 2655 | } | ||
| 2656 | if (comments == null) { | ||
| 2657 | comments = new Vector(); | ||
| 2658 | putProperty(AdditionalComments, comments); | ||
| 2659 | } | ||
| 2660 | ((Vector)comments).addElement(comment); | ||
| 2661 | } | ||
| 2662 | |||
| 2663 | /** | ||
| 2664 | * Callback from the parser. Route to the appropriate | ||
| 2665 | * handler for the tag. | ||
| 2666 | */ | ||
| 2667 | public void handleEndTag(HTML.Tag t, int pos) { | ||
| 2668 | if (receivedEndHTML || (midInsert && !inBody)) { | ||
| 2669 | return; | ||
| 2670 | } | ||
| 2671 | if (t == HTML.Tag.HTML) { | ||
| 2672 | receivedEndHTML = true; | ||
| 2673 | } | ||
| 2674 | if (t == HTML.Tag.BODY) { | ||
| 2675 | inBody = false; | ||
| 2676 | if (midInsert) { | ||
| 2677 | inBlock--; | ||
| 2678 | } | ||
| 2679 | } | ||
| 2680 | TagAction action = tagMap.get(t); | ||
| 2681 | if (action != null) { | ||
| 2682 | action.end(t); | ||
| 2683 | } | ||
| 2684 | } | ||
| 2685 | |||
| 2686 | /** | ||
| 2687 | * Callback from the parser. Route to the appropriate | ||
| 2688 | * handler for the tag. | ||
| 2689 | */ | ||
| 2690 | public void handleSimpleTag(HTML.Tag t, MutableAttributeSet a, int pos) { | ||
| 2691 | if (receivedEndHTML || (midInsert && !inBody)) { | ||
| 2692 | return; | ||
| 2693 | } | ||
| 2694 | |||
| 2695 | if (isStyleCSS && a.isDefined(HTML.Attribute.STYLE)) { | ||
| 2696 | // Map the style attributes. | ||
| 2697 | String decl = (String)a.getAttribute(HTML.Attribute.STYLE); | ||
| 2698 | a.removeAttribute(HTML.Attribute.STYLE); | ||
| 2699 | styleAttributes = getStyleSheet().getDeclaration(decl); | ||
| 2700 | a.addAttributes(styleAttributes); | ||
| 2701 | } | ||
| 2702 | else { | ||
| 2703 | styleAttributes = null; | ||
| 2704 | } | ||
| 2705 | |||
| 2706 | TagAction action = tagMap.get(t); | ||
| 2707 | if (action != null) { | ||
| 2708 | action.start(t, a); | ||
| 2709 | action.end(t); | ||
| 2710 | } | ||
| 2711 | else if (getPreservesUnknownTags()) { | ||
| 2712 | // unknown tag, only add if should preserve it. | ||
| 2713 | addSpecialElement(t, a); | ||
| 2714 | } | ||
| 2715 | } | ||
| 2716 | |||
| 2717 | /** | ||
| 2718 | * This is invoked after the stream has been parsed, but before | ||
| 2719 | * <code>flush</code>. <code>eol</code> will be one of \n, \r | ||
| 2720 | * or \r\n, which ever is encountered the most in parsing the | ||
| 2721 | * stream. | ||
| 2722 | * | ||
| 2723 | * @since 1.3 | ||
| 2724 | */ | ||
| 2725 | public void handleEndOfLineString(String eol) { | ||
| 2726 | if (emptyDocument && eol != null) { | ||
| 2727 | putProperty(DefaultEditorKit.EndOfLineStringProperty, | ||
| 2728 | eol); | ||
| 2729 | } | ||
| 2730 | } | ||
| 2731 | |||
| 2732 | // ---- tag handling support ------------------------------ | ||
| 2733 | |||
| 2734 | /** | ||
| 2735 | * Registers a handler for the given tag. By default | ||
| 2736 | * all of the well-known tags will have been registered. | ||
| 2737 | * This can be used to change the handling of a particular | ||
| 2738 | * tag or to add support for custom tags. | ||
| 2739 | */ | ||
| 2740 | protected void registerTag(HTML.Tag t, TagAction a) { | ||
| 2741 | tagMap.put(t, a); | ||
| 2742 | } | ||
| 2743 | |||
| 2744 | /** | ||
| 2745 | * An action to be performed in response | ||
| 2746 | * to parsing a tag. This allows customization | ||
| 2747 | * of how each tag is handled and avoids a large | ||
| 2748 | * switch statement. | ||
| 2749 | */ | ||
| 2750 | public class TagAction { | ||
| 2751 | |||
| 2752 | /** | ||
| 2753 | * Called when a start tag is seen for the | ||
| 2754 | * type of tag this action was registered | ||
| 2755 | * to. The tag argument indicates the actual | ||
| 2756 | * tag for those actions that are shared across | ||
| 2757 | * many tags. By default this does nothing and | ||
| 2758 | * completely ignores the tag. | ||
| 2759 | */ | ||
| 2760 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 2761 | } | ||
| 2762 | |||
| 2763 | /** | ||
| 2764 | * Called when an end tag is seen for the | ||
| 2765 | * type of tag this action was registered | ||
| 2766 | * to. The tag argument indicates the actual | ||
| 2767 | * tag for those actions that are shared across | ||
| 2768 | * many tags. By default this does nothing and | ||
| 2769 | * completely ignores the tag. | ||
| 2770 | */ | ||
| 2771 | public void end(HTML.Tag t) { | ||
| 2772 | } | ||
| 2773 | |||
| 2774 | } | ||
| 2775 | |||
| 2776 | public class BlockAction extends TagAction { | ||
| 2777 | |||
| 2778 | public void start(HTML.Tag t, MutableAttributeSet attr) { | ||
| 2779 | blockOpen(t, attr); | ||
| 2780 | } | ||
| 2781 | |||
| 2782 | public void end(HTML.Tag t) { | ||
| 2783 | blockClose(t); | ||
| 2784 | } | ||
| 2785 | } | ||
| 2786 | |||
| 2787 | |||
| 2788 | /** | ||
| 2789 | * Action used for the actual element form tag. This is named such | ||
| 2790 | * as there was already a public class named FormAction. | ||
| 2791 | */ | ||
| 2792 | private class FormTagAction extends BlockAction { | ||
| 2793 | public void start(HTML.Tag t, MutableAttributeSet attr) { | ||
| 2794 | super.start(t, attr); | ||
| 2795 | // initialize a ButtonGroupsMap when | ||
| 2796 | // FORM tag is encountered. This will | ||
| 2797 | // be used for any radio buttons that | ||
| 2798 | // might be defined in the FORM. | ||
| 2799 | // for new group new ButtonGroup will be created (fix for 4529702) | ||
| 2800 | // group name is a key in radioButtonGroupsMap | ||
| 2801 | radioButtonGroupsMap = new HashMap<String, ButtonGroup>(); | ||
| 2802 | } | ||
| 2803 | |||
| 2804 | public void end(HTML.Tag t) { | ||
| 2805 | super.end(t); | ||
| 2806 | // reset the button group to null since | ||
| 2807 | // the form has ended. | ||
| 2808 | radioButtonGroupsMap = null; | ||
| 2809 | } | ||
| 2810 | } | ||
| 2811 | |||
| 2812 | |||
| 2813 | public class ParagraphAction extends BlockAction { | ||
| 2814 | |||
| 2815 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 2816 | super.start(t, a); | ||
| 2817 | inParagraph = true; | ||
| 2818 | } | ||
| 2819 | |||
| 2820 | public void end(HTML.Tag t) { | ||
| 2821 | super.end(t); | ||
| 2822 | inParagraph = false; | ||
| 2823 | } | ||
| 2824 | } | ||
| 2825 | |||
| 2826 | public class SpecialAction extends TagAction { | ||
| 2827 | |||
| 2828 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 2829 | addSpecialElement(t, a); | ||
| 2830 | } | ||
| 2831 | |||
| 2832 | } | ||
| 2833 | |||
| 2834 | public class IsindexAction extends TagAction { | ||
| 2835 | |||
| 2836 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 2837 | blockOpen(HTML.Tag.IMPLIED, new SimpleAttributeSet()); | ||
| 2838 | addSpecialElement(t, a); | ||
| 2839 | blockClose(HTML.Tag.IMPLIED); | ||
| 2840 | } | ||
| 2841 | |||
| 2842 | } | ||
| 2843 | |||
| 2844 | |||
| 2845 | public class HiddenAction extends TagAction { | ||
| 2846 | |||
| 2847 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 2848 | addSpecialElement(t, a); | ||
| 2849 | } | ||
| 2850 | |||
| 2851 | public void end(HTML.Tag t) { | ||
| 2852 | if (!isEmpty(t)) { | ||
| 2853 | MutableAttributeSet a = new SimpleAttributeSet(); | ||
| 2854 | a.addAttribute(HTML.Attribute.ENDTAG, "true"); | ||
| 2855 | addSpecialElement(t, a); | ||
| 2856 | } | ||
| 2857 | } | ||
| 2858 | |||
| 2859 | boolean isEmpty(HTML.Tag t) { | ||
| 2860 | if (t == HTML.Tag.APPLET || | ||
| 2861 | t == HTML.Tag.SCRIPT) { | ||
| 2862 | return false; | ||
| 2863 | } | ||
| 2864 | return true; | ||
| 2865 | } | ||
| 2866 | } | ||
| 2867 | |||
| 2868 | |||
| 2869 | /** | ||
| 2870 | * Subclass of HiddenAction to set the content type for style sheets, | ||
| 2871 | * and to set the name of the default style sheet. | ||
| 2872 | */ | ||
| 2873 | class MetaAction extends HiddenAction { | ||
| 2874 | |||
| 2875 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 2876 | Object equiv = a.getAttribute(HTML.Attribute.HTTPEQUIV); | ||
| 2877 | if (equiv != null) { | ||
| 2878 | equiv = ((String)equiv).toLowerCase(); | ||
| 2879 | if (equiv.equals("content-style-type")) { | ||
| 2880 | String value = (String)a.getAttribute | ||
| 2881 | (HTML.Attribute.CONTENT); | ||
| 2882 | setDefaultStyleSheetType(value); | ||
| 2883 | isStyleCSS = "text/css".equals | ||
| 2884 | (getDefaultStyleSheetType()); | ||
| 2885 | } | ||
| 2886 | else if (equiv.equals("default-style")) { | ||
| 2887 | defaultStyle = (String)a.getAttribute | ||
| 2888 | (HTML.Attribute.CONTENT); | ||
| 2889 | } | ||
| 2890 | } | ||
| 2891 | super.start(t, a); | ||
| 2892 | } | ||
| 2893 | |||
| 2894 | boolean isEmpty(HTML.Tag t) { | ||
| 2895 | return true; | ||
| 2896 | } | ||
| 2897 | } | ||
| 2898 | |||
| 2899 | |||
| 2900 | /** | ||
| 2901 | * End if overridden to create the necessary stylesheets that | ||
| 2902 | * are referenced via the link tag. It is done in this manner | ||
| 2903 | * as the meta tag can be used to specify an alternate style sheet, | ||
| 2904 | * and is not guaranteed to come before the link tags. | ||
| 2905 | */ | ||
| 2906 | class HeadAction extends BlockAction { | ||
| 2907 | |||
| 2908 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 2909 | inHead = true; | ||
| 2910 | // This check of the insertTag is put in to avoid considering | ||
| 2911 | // the implied-p that is generated for the head. This allows | ||
| 2912 | // inserts for HR to work correctly. | ||
| 2913 | if ((insertTag == null && !insertAfterImplied) || | ||
| 2914 | (insertTag == HTML.Tag.HEAD) || | ||
| 2915 | (insertAfterImplied && | ||
| 2916 | (foundInsertTag || !a.isDefined(IMPLIED)))) { | ||
| 2917 | super.start(t, a); | ||
| 2918 | } | ||
| 2919 | } | ||
| 2920 | |||
| 2921 | public void end(HTML.Tag t) { | ||
| 2922 | inHead = inStyle = false; | ||
| 2923 | // See if there is a StyleSheet to link to. | ||
| 2924 | if (styles != null) { | ||
| 2925 | boolean isDefaultCSS = isStyleCSS; | ||
| 2926 | for (int counter = 0, maxCounter = styles.size(); | ||
| 2927 | counter < maxCounter;) { | ||
| 2928 | Object value = styles.elementAt(counter); | ||
| 2929 | if (value == HTML.Tag.LINK) { | ||
| 2930 | handleLink((AttributeSet)styles. | ||
| 2931 | elementAt(++counter)); | ||
| 2932 | counter++; | ||
| 2933 | } | ||
| 2934 | else { | ||
| 2935 | // Rule. | ||
| 2936 | // First element gives type. | ||
| 2937 | String type = (String)styles.elementAt(++counter); | ||
| 2938 | boolean isCSS = (type == null) ? isDefaultCSS : | ||
| 2939 | type.equals("text/css"); | ||
| 2940 | while (++counter < maxCounter && | ||
| 2941 | (styles.elementAt(counter) | ||
| 2942 | instanceof String)) { | ||
| 2943 | if (isCSS) { | ||
| 2944 | addCSSRules((String)styles.elementAt | ||
| 2945 | (counter)); | ||
| 2946 | } | ||
| 2947 | } | ||
| 2948 | } | ||
| 2949 | } | ||
| 2950 | } | ||
| 2951 | if ((insertTag == null && !insertAfterImplied) || | ||
| 2952 | insertTag == HTML.Tag.HEAD || | ||
| 2953 | (insertAfterImplied && foundInsertTag)) { | ||
| 2954 | super.end(t); | ||
| 2955 | } | ||
| 2956 | } | ||
| 2957 | |||
| 2958 | boolean isEmpty(HTML.Tag t) { | ||
| 2959 | return false; | ||
| 2960 | } | ||
| 2961 | |||
| 2962 | private void handleLink(AttributeSet attr) { | ||
| 2963 | // Link. | ||
| 2964 | String type = (String)attr.getAttribute(HTML.Attribute.TYPE); | ||
| 2965 | if (type == null) { | ||
| 2966 | type = getDefaultStyleSheetType(); | ||
| 2967 | } | ||
| 2968 | // Only choose if type==text/css | ||
| 2969 | // Select link if rel==stylesheet. | ||
| 2970 | // Otherwise if rel==alternate stylesheet and | ||
| 2971 | // title matches default style. | ||
| 2972 | if (type.equals("text/css")) { | ||
| 2973 | String rel = (String)attr.getAttribute(HTML.Attribute.REL); | ||
| 2974 | String title = (String)attr.getAttribute | ||
| 2975 | (HTML.Attribute.TITLE); | ||
| 2976 | String media = (String)attr.getAttribute | ||
| 2977 | (HTML.Attribute.MEDIA); | ||
| 2978 | if (media == null) { | ||
| 2979 | media = "all"; | ||
| 2980 | } | ||
| 2981 | else { | ||
| 2982 | media = media.toLowerCase(); | ||
| 2983 | } | ||
| 2984 | if (rel != null) { | ||
| 2985 | rel = rel.toLowerCase(); | ||
| 2986 | if ((media.indexOf("all") != -1 || | ||
| 2987 | media.indexOf("screen") != -1) && | ||
| 2988 | (rel.equals("stylesheet") || | ||
| 2989 | (rel.equals("alternate stylesheet") && | ||
| 2990 | title.equals(defaultStyle)))) { | ||
| 2991 | linkCSSStyleSheet((String)attr.getAttribute | ||
| 2992 | (HTML.Attribute.HREF)); | ||
| 2993 | } | ||
| 2994 | } | ||
| 2995 | } | ||
| 2996 | } | ||
| 2997 | } | ||
| 2998 | |||
| 2999 | |||
| 3000 | /** | ||
| 3001 | * A subclass to add the AttributeSet to styles if the | ||
| 3002 | * attributes contains an attribute for 'rel' with value | ||
| 3003 | * 'stylesheet' or 'alternate stylesheet'. | ||
| 3004 | */ | ||
| 3005 | class LinkAction extends HiddenAction { | ||
| 3006 | |||
| 3007 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 3008 | String rel = (String)a.getAttribute(HTML.Attribute.REL); | ||
| 3009 | if (rel != null) { | ||
| 3010 | rel = rel.toLowerCase(); | ||
| 3011 | if (rel.equals("stylesheet") || | ||
| 3012 | rel.equals("alternate stylesheet")) { | ||
| 3013 | if (styles == null) { | ||
| 3014 | styles = new Vector<Object>(3); | ||
| 3015 | } | ||
| 3016 | styles.addElement(t); | ||
| 3017 | styles.addElement(a.copyAttributes()); | ||
| 3018 | } | ||
| 3019 | } | ||
| 3020 | super.start(t, a); | ||
| 3021 | } | ||
| 3022 | } | ||
| 3023 | |||
| 3024 | class MapAction extends TagAction { | ||
| 3025 | |||
| 3026 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 3027 | lastMap = new Map((String)a.getAttribute(HTML.Attribute.NAME)); | ||
| 3028 | addMap(lastMap); | ||
| 3029 | } | ||
| 3030 | |||
| 3031 | public void end(HTML.Tag t) { | ||
| 3032 | } | ||
| 3033 | } | ||
| 3034 | |||
| 3035 | |||
| 3036 | class AreaAction extends TagAction { | ||
| 3037 | |||
| 3038 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 3039 | if (lastMap != null) { | ||
| 3040 | lastMap.addArea(a.copyAttributes()); | ||
| 3041 | } | ||
| 3042 | } | ||
| 3043 | |||
| 3044 | public void end(HTML.Tag t) { | ||
| 3045 | } | ||
| 3046 | } | ||
| 3047 | |||
| 3048 | |||
| 3049 | class StyleAction extends TagAction { | ||
| 3050 | |||
| 3051 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 3052 | if (inHead) { | ||
| 3053 | if (styles == null) { | ||
| 3054 | styles = new Vector<Object>(3); | ||
| 3055 | } | ||
| 3056 | styles.addElement(t); | ||
| 3057 | styles.addElement(a.getAttribute(HTML.Attribute.TYPE)); | ||
| 3058 | inStyle = true; | ||
| 3059 | } | ||
| 3060 | } | ||
| 3061 | |||
| 3062 | public void end(HTML.Tag t) { | ||
| 3063 | inStyle = false; | ||
| 3064 | } | ||
| 3065 | |||
| 3066 | boolean isEmpty(HTML.Tag t) { | ||
| 3067 | return false; | ||
| 3068 | } | ||
| 3069 | } | ||
| 3070 | |||
| 3071 | |||
| 3072 | public class PreAction extends BlockAction { | ||
| 3073 | |||
| 3074 | public void start(HTML.Tag t, MutableAttributeSet attr) { | ||
| 3075 | inPre = true; | ||
| 3076 | blockOpen(t, attr); | ||
| 3077 | attr.addAttribute(CSS.Attribute.WHITE_SPACE, "pre"); | ||
| 3078 | blockOpen(HTML.Tag.IMPLIED, attr); | ||
| 3079 | } | ||
| 3080 | |||
| 3081 | public void end(HTML.Tag t) { | ||
| 3082 | blockClose(HTML.Tag.IMPLIED); | ||
| 3083 | // set inPre to false after closing, so that if a newline | ||
| 3084 | // is added it won't generate a blockOpen. | ||
| 3085 | inPre = false; | ||
| 3086 | blockClose(t); | ||
| 3087 | } | ||
| 3088 | } | ||
| 3089 | |||
| 3090 | public class CharacterAction extends TagAction { | ||
| 3091 | |||
| 3092 | public void start(HTML.Tag t, MutableAttributeSet attr) { | ||
| 3093 | pushCharacterStyle(); | ||
| 3094 | if (!foundInsertTag) { | ||
| 3095 | // Note that the third argument should really be based off | ||
| 3096 | // inParagraph and impliedP. If we're wrong (that is | ||
| 3097 | // insertTagDepthDelta shouldn't be changed), we'll end up | ||
| 3098 | // removing an extra EndSpec, which won't matter anyway. | ||
| 3099 | boolean insert = canInsertTag(t, attr, false); | ||
| 3100 | if (foundInsertTag) { | ||
| 3101 | if (!inParagraph) { | ||
| 3102 | inParagraph = impliedP = true; | ||
| 3103 | } | ||
| 3104 | } | ||
| 3105 | if (!insert) { | ||
| 3106 | return; | ||
| 3107 | } | ||
| 3108 | } | ||
| 3109 | if (attr.isDefined(IMPLIED)) { | ||
| 3110 | attr.removeAttribute(IMPLIED); | ||
| 3111 | } | ||
| 3112 | charAttr.addAttribute(t, attr.copyAttributes()); | ||
| 3113 | if (styleAttributes != null) { | ||
| 3114 | charAttr.addAttributes(styleAttributes); | ||
| 3115 | } | ||
| 3116 | } | ||
| 3117 | |||
| 3118 | public void end(HTML.Tag t) { | ||
| 3119 | popCharacterStyle(); | ||
| 3120 | } | ||
| 3121 | } | ||
| 3122 | |||
| 3123 | /** | ||
| 3124 | * Provides conversion of HTML tag/attribute | ||
| 3125 | * mappings that have a corresponding StyleConstants | ||
| 3126 | * and CSS mapping. The conversion is to CSS attributes. | ||
| 3127 | */ | ||
| 3128 | class ConvertAction extends TagAction { | ||
| 3129 | |||
| 3130 | public void start(HTML.Tag t, MutableAttributeSet attr) { | ||
| 3131 | pushCharacterStyle(); | ||
| 3132 | if (!foundInsertTag) { | ||
| 3133 | // Note that the third argument should really be based off | ||
| 3134 | // inParagraph and impliedP. If we're wrong (that is | ||
| 3135 | // insertTagDepthDelta shouldn't be changed), we'll end up | ||
| 3136 | // removing an extra EndSpec, which won't matter anyway. | ||
| 3137 | boolean insert = canInsertTag(t, attr, false); | ||
| 3138 | if (foundInsertTag) { | ||
| 3139 | if (!inParagraph) { | ||
| 3140 | inParagraph = impliedP = true; | ||
| 3141 | } | ||
| 3142 | } | ||
| 3143 | if (!insert) { | ||
| 3144 | return; | ||
| 3145 | } | ||
| 3146 | } | ||
| 3147 | if (attr.isDefined(IMPLIED)) { | ||
| 3148 | attr.removeAttribute(IMPLIED); | ||
| 3149 | } | ||
| 3150 | if (styleAttributes != null) { | ||
| 3151 | charAttr.addAttributes(styleAttributes); | ||
| 3152 | } | ||
| 3153 | // We also need to add attr, otherwise we lose custom | ||
| 3154 | // attributes, including class/id for style lookups, and | ||
| 3155 | // further confuse style lookup (doesn't have tag). | ||
| 3156 | charAttr.addAttribute(t, attr.copyAttributes()); | ||
| 3157 | StyleSheet sheet = getStyleSheet(); | ||
| 3158 | if (t == HTML.Tag.B) { | ||
| 3159 | sheet.addCSSAttribute(charAttr, CSS.Attribute.FONT_WEIGHT, "bold"); | ||
| 3160 | } else if (t == HTML.Tag.I) { | ||
| 3161 | sheet.addCSSAttribute(charAttr, CSS.Attribute.FONT_STYLE, "italic"); | ||
| 3162 | } else if (t == HTML.Tag.U) { | ||
| 3163 | Object v = charAttr.getAttribute(CSS.Attribute.TEXT_DECORATION); | ||
| 3164 | String value = "underline"; | ||
| 3165 | value = (v != null) ? value + "," + v.toString() : value; | ||
| 3166 | sheet.addCSSAttribute(charAttr, CSS.Attribute.TEXT_DECORATION, value); | ||
| 3167 | } else if (t == HTML.Tag.STRIKE) { | ||
| 3168 | Object v = charAttr.getAttribute(CSS.Attribute.TEXT_DECORATION); | ||
| 3169 | String value = "line-through"; | ||
| 3170 | value = (v != null) ? value + "," + v.toString() : value; | ||
| 3171 | sheet.addCSSAttribute(charAttr, CSS.Attribute.TEXT_DECORATION, value); | ||
| 3172 | } else if (t == HTML.Tag.SUP) { | ||
| 3173 | Object v = charAttr.getAttribute(CSS.Attribute.VERTICAL_ALIGN); | ||
| 3174 | String value = "sup"; | ||
| 3175 | value = (v != null) ? value + "," + v.toString() : value; | ||
| 3176 | sheet.addCSSAttribute(charAttr, CSS.Attribute.VERTICAL_ALIGN, value); | ||
| 3177 | } else if (t == HTML.Tag.SUB) { | ||
| 3178 | Object v = charAttr.getAttribute(CSS.Attribute.VERTICAL_ALIGN); | ||
| 3179 | String value = "sub"; | ||
| 3180 | value = (v != null) ? value + "," + v.toString() : value; | ||
| 3181 | sheet.addCSSAttribute(charAttr, CSS.Attribute.VERTICAL_ALIGN, value); | ||
| 3182 | } else if (t == HTML.Tag.FONT) { | ||
| 3183 | String color = (String) attr.getAttribute(HTML.Attribute.COLOR); | ||
| 3184 | if (color != null) { | ||
| 3185 | sheet.addCSSAttribute(charAttr, CSS.Attribute.COLOR, color); | ||
| 3186 | } | ||
| 3187 | String face = (String) attr.getAttribute(HTML.Attribute.FACE); | ||
| 3188 | if (face != null) { | ||
| 3189 | sheet.addCSSAttribute(charAttr, CSS.Attribute.FONT_FAMILY, face); | ||
| 3190 | } | ||
| 3191 | String size = (String) attr.getAttribute(HTML.Attribute.SIZE); | ||
| 3192 | if (size != null) { | ||
| 3193 | sheet.addCSSAttributeFromHTML(charAttr, CSS.Attribute.FONT_SIZE, size); | ||
| 3194 | } | ||
| 3195 | } | ||
| 3196 | } | ||
| 3197 | |||
| 3198 | public void end(HTML.Tag t) { | ||
| 3199 | popCharacterStyle(); | ||
| 3200 | } | ||
| 3201 | |||
| 3202 | } | ||
| 3203 | |||
| 3204 | class AnchorAction extends CharacterAction { | ||
| 3205 | |||
| 3206 | public void start(HTML.Tag t, MutableAttributeSet attr) { | ||
| 3207 | // set flag to catch empty anchors | ||
| 3208 | emptyAnchor = true; | ||
| 3209 | super.start(t, attr); | ||
| 3210 | } | ||
| 3211 | |||
| 3212 | public void end(HTML.Tag t) { | ||
| 3213 | if (emptyAnchor) { | ||
| 3214 | // if the anchor was empty it was probably a | ||
| 3215 | // named anchor point and we don't want to throw | ||
| 3216 | // it away. | ||
| 3217 | char[] one = new char[1]; | ||
| 3218 | one[0] = '\n'; | ||
| 3219 | addContent(one, 0, 1); | ||
| 3220 | } | ||
| 3221 | super.end(t); | ||
| 3222 | } | ||
| 3223 | } | ||
| 3224 | |||
| 3225 | class TitleAction extends HiddenAction { | ||
| 3226 | |||
| 3227 | public void start(HTML.Tag t, MutableAttributeSet attr) { | ||
| 3228 | inTitle = true; | ||
| 3229 | super.start(t, attr); | ||
| 3230 | } | ||
| 3231 | |||
| 3232 | public void end(HTML.Tag t) { | ||
| 3233 | inTitle = false; | ||
| 3234 | super.end(t); | ||
| 3235 | } | ||
| 3236 | |||
| 3237 | boolean isEmpty(HTML.Tag t) { | ||
| 3238 | return false; | ||
| 3239 | } | ||
| 3240 | } | ||
| 3241 | |||
| 3242 | |||
| 3243 | class BaseAction extends TagAction { | ||
| 3244 | |||
| 3245 | public void start(HTML.Tag t, MutableAttributeSet attr) { | ||
| 3246 | String href = (String) attr.getAttribute(HTML.Attribute.HREF); | ||
| 3247 | if (href != null) { | ||
| 3248 | try { | ||
| 3249 | URL newBase = new URL(base, href); | ||
| 3250 | setBase(newBase); | ||
| 3251 | hasBaseTag = true; | ||
| 3252 | } catch (MalformedURLException ex) { | ||
| 3253 | } | ||
| 3254 | } | ||
| 3255 | baseTarget = (String) attr.getAttribute(HTML.Attribute.TARGET); | ||
| 3256 | } | ||
| 3257 | } | ||
| 3258 | |||
| 3259 | class ObjectAction extends SpecialAction { | ||
| 3260 | |||
| 3261 | public void start(HTML.Tag t, MutableAttributeSet a) { | ||
| 3262 | if (t == HTML.Tag.PARAM) { | ||
| 3263 | addParameter(a); | ||
| 3264 | } else { | ||
| 3265 | super.start(t, a); | ||
| 3266 | } | ||
| 3267 | } | ||
| 3268 | |||
| 3269 | public void end(HTML.Tag t) { | ||
| 3270 | if (t != HTML.Tag.PARAM) { | ||
| 3271 | super.end(t); | ||
| 3272 | } | ||
| 3273 | } | ||
| 3274 | |||
| 3275 | void addParameter(AttributeSet a) { | ||
| 3276 | String name = (String) a.getAttribute(HTML.Attribute.NAME); | ||
| 3277 | String value = (String) a.getAttribute(HTML.Attribute.VALUE); | ||
| 3278 | if ((name != null) && (value != null)) { | ||
| 3279 | ElementSpec objSpec = parseBuffer.lastElement(); | ||
| 3280 | MutableAttributeSet objAttr = (MutableAttributeSet) objSpec.getAttributes(); | ||
| 3281 | objAttr.addAttribute(name, value); | ||
| 3282 | } | ||
| 3283 | } | ||
| 3284 | } | ||
| 3285 | |||
| 3286 | /** | ||
| 3287 | * Action to support forms by building all of the elements | ||
| 3288 | * used to represent form controls. This will process | ||
| 3289 | * the <INPUT>, <TEXTAREA>, <SELECT>, | ||
| 3290 | * and <OPTION> tags. The element created by | ||
| 3291 | * this action is expected to have the attribute | ||
| 3292 | * <code>StyleConstants.ModelAttribute</code> set to | ||
| 3293 | * the model that holds the state for the form control. | ||
| 3294 | * This enables multiple views, and allows document to | ||
| 3295 | * be iterated over picking up the data of the form. | ||
| 3296 | * The following are the model assignments for the | ||
| 3297 | * various type of form elements. | ||
| 3298 | * <table summary="model assignments for the various types of form elements"> | ||
| 3299 | * <tr> | ||
| 3300 | * <th>Element Type | ||
| 3301 | * <th>Model Type | ||
| 3302 | * <tr> | ||
| 3303 | * <td>input, type button | ||
| 3304 | * <td>{@link DefaultButtonModel} | ||
| 3305 | * <tr> | ||
| 3306 | * <td>input, type checkbox | ||
| 3307 | * <td>{@link javax.swing.JToggleButton.ToggleButtonModel} | ||
| 3308 | * <tr> | ||
| 3309 | * <td>input, type image | ||
| 3310 | * <td>{@link DefaultButtonModel} | ||
| 3311 | * <tr> | ||
| 3312 | * <td>input, type password | ||
| 3313 | * <td>{@link PlainDocument} | ||
| 3314 | * <tr> | ||
| 3315 | * <td>input, type radio | ||
| 3316 | * <td>{@link javax.swing.JToggleButton.ToggleButtonModel} | ||
| 3317 | * <tr> | ||
| 3318 | * <td>input, type reset | ||
| 3319 | * <td>{@link DefaultButtonModel} | ||
| 3320 | * <tr> | ||
| 3321 | * <td>input, type submit | ||
| 3322 | * <td>{@link DefaultButtonModel} | ||
| 3323 | * <tr> | ||
| 3324 | * <td>input, type text or type is null. | ||
| 3325 | * <td>{@link PlainDocument} | ||
| 3326 | * <tr> | ||
| 3327 | * <td>select | ||
| 3328 | * <td>{@link DefaultComboBoxModel} or an {@link DefaultListModel}, with an item type of Option | ||
| 3329 | * <tr> | ||
| 3330 | * <td>textarea | ||
| 3331 | * <td>{@link PlainDocument} | ||
| 3332 | * </table> | ||
| 3333 | * | ||
| 3334 | */ | ||
| 3335 | public class FormAction extends SpecialAction { | ||
| 3336 | |||
| 3337 | public void start(HTML.Tag t, MutableAttributeSet attr) { | ||
| 3338 | if (t == HTML.Tag.INPUT) { | ||
| 3339 | String type = (String) | ||
| 3340 | attr.getAttribute(HTML.Attribute.TYPE); | ||
| 3341 | /* | ||
| 3342 | * if type is not defined teh default is | ||
| 3343 | * assumed to be text. | ||
| 3344 | */ | ||
| 3345 | if (type == null) { | ||
| 3346 | type = "text"; | ||
| 3347 | attr.addAttribute(HTML.Attribute.TYPE, "text"); | ||
| 3348 | } | ||
| 3349 | setModel(type, attr); | ||
| 3350 | } else if (t == HTML.Tag.TEXTAREA) { | ||
| 3351 | inTextArea = true; | ||
| 3352 | textAreaDocument = new TextAreaDocument(); | ||
| 3353 | attr.addAttribute(StyleConstants.ModelAttribute, | ||
| 3354 | textAreaDocument); | ||
| 3355 | } else if (t == HTML.Tag.SELECT) { | ||
| 3356 | int size = HTML.getIntegerAttributeValue(attr, | ||
| 3357 | HTML.Attribute.SIZE, | ||
| 3358 | 1); | ||
| 3359 | boolean multiple = attr.getAttribute(HTML.Attribute.MULTIPLE) != null; | ||
| 3360 | if ((size > 1) || multiple) { | ||
| 3361 | OptionListModel m = new OptionListModel(); | ||
| 3362 | if (multiple) { | ||
| 3363 | m.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); | ||
| 3364 | } | ||
| 3365 | selectModel = m; | ||
| 3366 | } else { | ||
| 3367 | selectModel = new OptionComboBoxModel(); | ||
| 3368 | } | ||
| 3369 | attr.addAttribute(StyleConstants.ModelAttribute, | ||
| 3370 | selectModel); | ||
| 3371 | |||
| 3372 | } | ||
| 3373 | |||
| 3374 | // build the element, unless this is an option. | ||
| 3375 | if (t == HTML.Tag.OPTION) { | ||
| 3376 | option = new Option(attr); | ||
| 3377 | |||
| 3378 | if (selectModel instanceof OptionListModel) { | ||
| 3379 | OptionListModel m = (OptionListModel)selectModel; | ||
| 3380 | m.addElement(option); | ||
| 3381 | if (option.isSelected()) { | ||
| 3382 | m.addSelectionInterval(optionCount, optionCount); | ||
| 3383 | m.setInitialSelection(optionCount); | ||
| 3384 | } | ||
| 3385 | } else if (selectModel instanceof OptionComboBoxModel) { | ||
| 3386 | OptionComboBoxModel m = (OptionComboBoxModel)selectModel; | ||
| 3387 | m.addElement(option); | ||
| 3388 | if (option.isSelected()) { | ||
| 3389 | m.setSelectedItem(option); | ||
| 3390 | m.setInitialSelection(option); | ||
| 3391 | } | ||
| 3392 | } | ||
| 3393 | optionCount++; | ||
| 3394 | } else { | ||
| 3395 | super.start(t, attr); | ||
| 3396 | } | ||
| 3397 | } | ||
| 3398 | |||
| 3399 | public void end(HTML.Tag t) { | ||
| 3400 | if (t == HTML.Tag.OPTION) { | ||
| 3401 | option = null; | ||
| 3402 | } else { | ||
| 3403 | if (t == HTML.Tag.SELECT) { | ||
| 3404 | selectModel = null; | ||
| 3405 | optionCount = 0; | ||
| 3406 | } else if (t == HTML.Tag.TEXTAREA) { | ||
| 3407 | inTextArea = false; | ||
| 3408 | |||
| 3409 | /* Now that the textarea has ended, | ||
| 3410 | * store the entire initial text | ||
| 3411 | * of the text area. This will | ||
| 3412 | * enable us to restore the initial | ||
| 3413 | * state if a reset is requested. | ||
| 3414 | */ | ||
| 3415 | textAreaDocument.storeInitialText(); | ||
| 3416 | } | ||
| 3417 | super.end(t); | ||
| 3418 | } | ||
| 3419 | } | ||
| 3420 | |||
| 3421 | void setModel(String type, MutableAttributeSet attr) { | ||
| 3422 | if (type.equals("submit") || | ||
| 3423 | type.equals("reset") || | ||
| 3424 | type.equals("image")) { | ||
| 3425 | |||
| 3426 | // button model | ||
| 3427 | attr.addAttribute(StyleConstants.ModelAttribute, | ||
| 3428 | new DefaultButtonModel()); | ||
| 3429 | } else if (type.equals("text") || | ||
| 3430 | type.equals("password")) { | ||
| 3431 | // plain text model | ||
| 3432 | int maxLength = HTML.getIntegerAttributeValue( | ||
| 3433 | attr, HTML.Attribute.MAXLENGTH, -1); | ||
| 3434 | Document doc; | ||
| 3435 | |||
| 3436 | if (maxLength > 0) { | ||
| 3437 | doc = new FixedLengthDocument(maxLength); | ||
| 3438 | } | ||
| 3439 | else { | ||
| 3440 | doc = new PlainDocument(); | ||
| 3441 | } | ||
| 3442 | String value = (String) | ||
| 3443 | attr.getAttribute(HTML.Attribute.VALUE); | ||
| 3444 | try { | ||
| 3445 | doc.insertString(0, value, null); | ||
| 3446 | } catch (BadLocationException e) { | ||
| 3447 | } | ||
| 3448 | attr.addAttribute(StyleConstants.ModelAttribute, doc); | ||
| 3449 | } else if (type.equals("file")) { | ||
| 3450 | // plain text model | ||
| 3451 | attr.addAttribute(StyleConstants.ModelAttribute, | ||
| 3452 | new PlainDocument()); | ||
| 3453 | } else if (type.equals("checkbox") || | ||
| 3454 | type.equals("radio")) { | ||
| 3455 | JToggleButton.ToggleButtonModel model = new JToggleButton.ToggleButtonModel(); | ||
| 3456 | if (type.equals("radio")) { | ||
| 3457 | String name = (String) attr.getAttribute(HTML.Attribute.NAME); | ||
| 3458 | if ( radioButtonGroupsMap == null ) { //fix for 4772743 | ||
| 3459 | radioButtonGroupsMap = new HashMap<String, ButtonGroup>(); | ||
| 3460 | } | ||
| 3461 | ButtonGroup radioButtonGroup = radioButtonGroupsMap.get(name); | ||
| 3462 | if (radioButtonGroup == null) { | ||
| 3463 | radioButtonGroup = new ButtonGroup(); | ||
| 3464 | radioButtonGroupsMap.put(name,radioButtonGroup); | ||
| 3465 | } | ||
| 3466 | model.setGroup(radioButtonGroup); | ||
| 3467 | } | ||
| 3468 | boolean checked = (attr.getAttribute(HTML.Attribute.CHECKED) != null); | ||
| 3469 | model.setSelected(checked); | ||
| 3470 | attr.addAttribute(StyleConstants.ModelAttribute, model); | ||
| 3471 | } | ||
| 3472 | } | ||
| 3473 | |||
| 3474 | /** | ||
| 3475 | * If a <SELECT> tag is being processed, this | ||
| 3476 | * model will be a reference to the model being filled | ||
| 3477 | * with the <OPTION> elements (which produce | ||
| 3478 | * objects of type <code>Option</code>. | ||
| 3479 | */ | ||
| 3480 | Object selectModel; | ||
| 3481 | int optionCount; | ||
| 3482 | } | ||
| 3483 | |||
| 3484 | |||
| 3485 | // --- utility methods used by the reader ------------------ | ||
| 3486 | |||
| 3487 | /** | ||
| 3488 | * Pushes the current character style on a stack in preparation | ||
| 3489 | * for forming a new nested character style. | ||
| 3490 | */ | ||
| 3491 | protected void pushCharacterStyle() { | ||
| 3492 | charAttrStack.push(charAttr.copyAttributes()); | ||
| 3493 | } | ||
| 3494 | |||
| 3495 | /** | ||
| 3496 | * Pops a previously pushed character style off the stack | ||
| 3497 | * to return to a previous style. | ||
| 3498 | */ | ||
| 3499 | protected void popCharacterStyle() { | ||
| 3500 | if (!charAttrStack.empty()) { | ||
| 3501 | charAttr = (MutableAttributeSet) charAttrStack.peek(); | ||
| 3502 | charAttrStack.pop(); | ||
| 3503 | } | ||
| 3504 | } | ||
| 3505 | |||
| 3506 | /** | ||
| 3507 | * Adds the given content to the textarea document. | ||
| 3508 | * This method gets called when we are in a textarea | ||
| 3509 | * context. Therefore all text that is seen belongs | ||
| 3510 | * to the text area and is hence added to the | ||
| 3511 | * TextAreaDocument associated with the text area. | ||
| 3512 | */ | ||
| 3513 | protected void textAreaContent(char[] data) { | ||
| 3514 | try { | ||
| 3515 | textAreaDocument.insertString(textAreaDocument.getLength(), new String(data), null); | ||
| 3516 | } catch (BadLocationException e) { | ||
| 3517 | // Should do something reasonable | ||
| 3518 | } | ||
| 3519 | } | ||
| 3520 | |||
| 3521 | /** | ||
| 3522 | * Adds the given content that was encountered in a | ||
| 3523 | * PRE element. This synthesizes lines to hold the | ||
| 3524 | * runs of text, and makes calls to addContent to | ||
| 3525 | * actually add the text. | ||
| 3526 | */ | ||
| 3527 | protected void preContent(char[] data) { | ||
| 3528 | int last = 0; | ||
| 3529 | for (int i = 0; i < data.length; i++) { | ||
| 3530 | if (data[i] == '\n') { | ||
| 3531 | addContent(data, last, i - last + 1); | ||
| 3532 | blockClose(HTML.Tag.IMPLIED); | ||
| 3533 | MutableAttributeSet a = new SimpleAttributeSet(); | ||
| 3534 | a.addAttribute(CSS.Attribute.WHITE_SPACE, "pre"); | ||
| 3535 | blockOpen(HTML.Tag.IMPLIED, a); | ||
| 3536 | last = i + 1; | ||
| 3537 | } | ||
| 3538 | } | ||
| 3539 | if (last < data.length) { | ||
| 3540 | addContent(data, last, data.length - last); | ||
| 3541 | } | ||
| 3542 | } | ||
| 3543 | |||
| 3544 | /** | ||
| 3545 | * Adds an instruction to the parse buffer to create a | ||
| 3546 | * block element with the given attributes. | ||
| 3547 | */ | ||
| 3548 | protected void blockOpen(HTML.Tag t, MutableAttributeSet attr) { | ||
| 3549 | if (impliedP) { | ||
| 3550 | blockClose(HTML.Tag.IMPLIED); | ||
| 3551 | } | ||
| 3552 | |||
| 3553 | inBlock++; | ||
| 3554 | |||
| 3555 | if (!canInsertTag(t, attr, true)) { | ||
| 3556 | return; | ||
| 3557 | } | ||
| 3558 | if (attr.isDefined(IMPLIED)) { | ||
| 3559 | attr.removeAttribute(IMPLIED); | ||
| 3560 | } | ||
| 3561 | lastWasNewline = false; | ||
| 3562 | attr.addAttribute(StyleConstants.NameAttribute, t); | ||
| 3563 | ElementSpec es = new ElementSpec( | ||
| 3564 | attr.copyAttributes(), ElementSpec.StartTagType); | ||
| 3565 | parseBuffer.addElement(es); | ||
| 3566 | } | ||
| 3567 | |||
| 3568 | /** | ||
| 3569 | * Adds an instruction to the parse buffer to close out | ||
| 3570 | * a block element of the given type. | ||
| 3571 | */ | ||
| 3572 | protected void blockClose(HTML.Tag t) { | ||
| 3573 | inBlock--; | ||
| 3574 | |||
| 3575 | if (!foundInsertTag) { | ||
| 3576 | return; | ||
| 3577 | } | ||
| 3578 | |||
| 3579 | // Add a new line, if the last character wasn't one. This is | ||
| 3580 | // needed for proper positioning of the cursor. addContent | ||
| 3581 | // with true will force an implied paragraph to be generated if | ||
| 3582 | // there isn't one. This may result in a rather bogus structure | ||
| 3583 | // (perhaps a table with a child pargraph), but the paragraph | ||
| 3584 | // is needed for proper positioning and display. | ||
| 3585 | if(!lastWasNewline) { | ||
| 3586 | pushCharacterStyle(); | ||
| 3587 | charAttr.addAttribute(IMPLIED_CR, Boolean.TRUE); | ||
| 3588 | addContent(NEWLINE, 0, 1, true); | ||
| 3589 | popCharacterStyle(); | ||
| 3590 | lastWasNewline = true; | ||
| 3591 | } | ||
| 3592 | |||
| 3593 | if (impliedP) { | ||
| 3594 | impliedP = false; | ||
| 3595 | inParagraph = false; | ||
| 3596 | if (t != HTML.Tag.IMPLIED) { | ||
| 3597 | blockClose(HTML.Tag.IMPLIED); | ||
| 3598 | } | ||
| 3599 | } | ||
| 3600 | // an open/close with no content will be removed, so we | ||
| 3601 | // add a space of content to keep the element being formed. | ||
| 3602 | ElementSpec prev = (parseBuffer.size() > 0) ? | ||
| 3603 | parseBuffer.lastElement() : null; | ||
| 3604 | if (prev != null && prev.getType() == ElementSpec.StartTagType) { | ||
| 3605 | char[] one = new char[1]; | ||
| 3606 | one[0] = ' '; | ||
| 3607 | addContent(one, 0, 1); | ||
| 3608 | } | ||
| 3609 | ElementSpec es = new ElementSpec( | ||
| 3610 | null, ElementSpec.EndTagType); | ||
| 3611 | parseBuffer.addElement(es); | ||
| 3612 | } | ||
| 3613 | |||
| 3614 | /** | ||
| 3615 | * Adds some text with the current character attributes. | ||
| 3616 | * | ||
| 3617 | * @param data the content to add | ||
| 3618 | * @param offs the initial offset | ||
| 3619 | * @param length the length | ||
| 3620 | */ | ||
| 3621 | protected void addContent(char[] data, int offs, int length) { | ||
| 3622 | addContent(data, offs, length, true); | ||
| 3623 | } | ||
| 3624 | |||
| 3625 | /** | ||
| 3626 | * Adds some text with the current character attributes. | ||
| 3627 | * | ||
| 3628 | * @param data the content to add | ||
| 3629 | * @param offs the initial offset | ||
| 3630 | * @param length the length | ||
| 3631 | * @param generateImpliedPIfNecessary whether to generate implied | ||
| 3632 | * paragraphs | ||
| 3633 | */ | ||
| 3634 | protected void addContent(char[] data, int offs, int length, | ||
| 3635 | boolean generateImpliedPIfNecessary) { | ||
| 3636 | if (!foundInsertTag) { | ||
| 3637 | return; | ||
| 3638 | } | ||
| 3639 | |||
| 3640 | if (generateImpliedPIfNecessary && (! inParagraph) && (! inPre)) { | ||
| 3641 | blockOpen(HTML.Tag.IMPLIED, new SimpleAttributeSet()); | ||
| 3642 | inParagraph = true; | ||
| 3643 | impliedP = true; | ||
| 3644 | } | ||
| 3645 | emptyAnchor = false; | ||
| 3646 | charAttr.addAttribute(StyleConstants.NameAttribute, HTML.Tag.CONTENT); | ||
| 3647 | AttributeSet a = charAttr.copyAttributes(); | ||
| 3648 | ElementSpec es = new ElementSpec( | ||
| 3649 | a, ElementSpec.ContentType, data, offs, length); | ||
| 3650 | parseBuffer.addElement(es); | ||
| 3651 | |||
| 3652 | if (parseBuffer.size() > threshold) { | ||
| 3653 | if ( threshold <= MaxThreshold ) { | ||
| 3654 | threshold *= StepThreshold; | ||
| 3655 | } | ||
| 3656 | try { | ||
| 3657 | flushBuffer(false); | ||
| 3658 | } catch (BadLocationException ble) { | ||
| 3659 | } | ||
| 3660 | } | ||
| 3661 | if(length > 0) { | ||
| 3662 | lastWasNewline = (data[offs + length - 1] == '\n'); | ||
| 3663 | } | ||
| 3664 | } | ||
| 3665 | |||
| 3666 | /** | ||
| 3667 | * Adds content that is basically specified entirely | ||
| 3668 | * in the attribute set. | ||
| 3669 | */ | ||
| 3670 | protected void addSpecialElement(HTML.Tag t, MutableAttributeSet a) { | ||
| 3671 | if ((t != HTML.Tag.FRAME) && (! inParagraph) && (! inPre)) { | ||
| 3672 | nextTagAfterPImplied = t; | ||
| 3673 | blockOpen(HTML.Tag.IMPLIED, new SimpleAttributeSet()); | ||
| 3674 | nextTagAfterPImplied = null; | ||
| 3675 | inParagraph = true; | ||
| 3676 | impliedP = true; | ||
| 3677 | } | ||
| 3678 | if (!canInsertTag(t, a, t.isBlock())) { | ||
| 3679 | return; | ||
| 3680 | } | ||
| 3681 | if (a.isDefined(IMPLIED)) { | ||
| 3682 | a.removeAttribute(IMPLIED); | ||
| 3683 | } | ||
| 3684 | emptyAnchor = false; | ||
| 3685 | a.addAttributes(charAttr); | ||
| 3686 | a.addAttribute(StyleConstants.NameAttribute, t); | ||
| 3687 | char[] one = new char[1]; | ||
| 3688 | one[0] = ' '; | ||
| 3689 | ElementSpec es = new ElementSpec( | ||
| 3690 | a.copyAttributes(), ElementSpec.ContentType, one, 0, 1); | ||
| 3691 | parseBuffer.addElement(es); | ||
| 3692 | // Set this to avoid generating a newline for frames, frames | ||
| 3693 | // shouldn't have any content, and shouldn't need a newline. | ||
| 3694 | if (t == HTML.Tag.FRAME) { | ||
| 3695 | lastWasNewline = true; | ||
| 3696 | } | ||
| 3697 | } | ||
| 3698 | |||
| 3699 | /** | ||
| 3700 | * Flushes the current parse buffer into the document. | ||
| 3701 | * @param endOfStream true if there is no more content to parser | ||
| 3702 | */ | ||
| 3703 | void flushBuffer(boolean endOfStream) throws BadLocationException { | ||
| 3704 | int oldLength = HTMLDocument.this.getLength(); | ||
| 3705 | int size = parseBuffer.size(); | ||
| 3706 | if (endOfStream && (insertTag != null || insertAfterImplied) && | ||
| 3707 | size > 0) { | ||
| 3708 | adjustEndSpecsForPartialInsert(); | ||
| 3709 | size = parseBuffer.size(); | ||
| 3710 | } | ||
| 3711 | ElementSpec[] spec = new ElementSpec[size]; | ||
| 3712 | parseBuffer.copyInto(spec); | ||
| 3713 | |||
| 3714 | if (oldLength == 0 && (insertTag == null && !insertAfterImplied)) { | ||
| 3715 | create(spec); | ||
| 3716 | } else { | ||
| 3717 | insert(offset, spec); | ||
| 3718 | } | ||
| 3719 | parseBuffer.removeAllElements(); | ||
| 3720 | offset += HTMLDocument.this.getLength() - oldLength; | ||
| 3721 | flushCount++; | ||
| 3722 | } | ||
| 3723 | |||
| 3724 | /** | ||
| 3725 | * This will be invoked for the last flush, if <code>insertTag</code> | ||
| 3726 | * is non null. | ||
| 3727 | */ | ||
| 3728 | private void adjustEndSpecsForPartialInsert() { | ||
| 3729 | int size = parseBuffer.size(); | ||
| 3730 | if (insertTagDepthDelta < 0) { | ||
| 3731 | // When inserting via an insertTag, the depths (of the tree | ||
| 3732 | // being read in, and existing hiearchy) may not match up. | ||
| 3733 | // This attemps to clean it up. | ||
| 3734 | int removeCounter = insertTagDepthDelta; | ||
| 3735 | while (removeCounter < 0 && size >= 0 && | ||
| 3736 | parseBuffer.elementAt(size - 1). | ||
| 3737 | getType() == ElementSpec.EndTagType) { | ||
| 3738 | parseBuffer.removeElementAt(--size); | ||
| 3739 | removeCounter++; | ||
| 3740 | } | ||
| 3741 | } | ||
| 3742 | if (flushCount == 0 && (!insertAfterImplied || | ||
| 3743 | !wantsTrailingNewline)) { | ||
| 3744 | // If this starts with content (or popDepth > 0 && | ||
| 3745 | // pushDepth > 0) and ends with EndTagTypes, make sure | ||
| 3746 | // the last content isn't a \n, otherwise will end up with | ||
| 3747 | // an extra \n in the middle of content. | ||
| 3748 | int index = 0; | ||
| 3749 | if (pushDepth > 0) { | ||
| 3750 | if (parseBuffer.elementAt(0).getType() == | ||
| 3751 | ElementSpec.ContentType) { | ||
| 3752 | index++; | ||
| 3753 | } | ||
| 3754 | } | ||
| 3755 | index += (popDepth + pushDepth); | ||
| 3756 | int cCount = 0; | ||
| 3757 | int cStart = index; | ||
| 3758 | while (index < size && parseBuffer.elementAt | ||
| 3759 | (index).getType() == ElementSpec.ContentType) { | ||
| 3760 | index++; | ||
| 3761 | cCount++; | ||
| 3762 | } | ||
| 3763 | if (cCount > 1) { | ||
| 3764 | while (index < size && parseBuffer.elementAt | ||
| 3765 | (index).getType() == ElementSpec.EndTagType) { | ||
| 3766 | index++; | ||
| 3767 | } | ||
| 3768 | if (index == size) { | ||
| 3769 | char[] lastText = parseBuffer.elementAt | ||
| 3770 | (cStart + cCount - 1).getArray(); | ||
| 3771 | if (lastText.length == 1 && lastText[0] == NEWLINE[0]){ | ||
| 3772 | index = cStart + cCount - 1; | ||
| 3773 | while (size > index) { | ||
| 3774 | parseBuffer.removeElementAt(--size); | ||
| 3775 | } | ||
| 3776 | } | ||
| 3777 | } | ||
| 3778 | } | ||
| 3779 | } | ||
| 3780 | if (wantsTrailingNewline) { | ||
| 3781 | // Make sure there is in fact a newline | ||
| 3782 | for (int counter = parseBuffer.size() - 1; counter >= 0; | ||
| 3783 | counter--) { | ||
| 3784 | ElementSpec spec = parseBuffer.elementAt(counter); | ||
| 3785 | if (spec.getType() == ElementSpec.ContentType) { | ||
| 3786 | if (spec.getArray()[spec.getLength() - 1] != '\n') { | ||
| 3787 | SimpleAttributeSet attrs =new SimpleAttributeSet(); | ||
| 3788 | |||
| 3789 | attrs.addAttribute(StyleConstants.NameAttribute, | ||
| 3790 | HTML.Tag.CONTENT); | ||
| 3791 | parseBuffer.insertElementAt(new ElementSpec( | ||
| 3792 | attrs, | ||
| 3793 | ElementSpec.ContentType, NEWLINE, 0, 1), | ||
| 3794 | counter + 1); | ||
| 3795 | } | ||
| 3796 | break; | ||
| 3797 | } | ||
| 3798 | } | ||
| 3799 | } | ||
| 3800 | } | ||
| 3801 | |||
| 3802 | /** | ||
| 3803 | * Adds the CSS rules in <code>rules</code>. | ||
| 3804 | */ | ||
| 3805 | void addCSSRules(String rules) { | ||
| 3806 | StyleSheet ss = getStyleSheet(); | ||
| 3807 | ss.addRule(rules); | ||
| 3808 | } | ||
| 3809 | |||
| 3810 | /** | ||
| 3811 | * Adds the CSS stylesheet at <code>href</code> to the known list | ||
| 3812 | * of stylesheets. | ||
| 3813 | */ | ||
| 3814 | void linkCSSStyleSheet(String href) { | ||
| 3815 | URL url; | ||
| 3816 | try { | ||
| 3817 | url = new URL(base, href); | ||
| 3818 | } catch (MalformedURLException mfe) { | ||
| 3819 | try { | ||
| 3820 | url = new URL(href); | ||
| 3821 | } catch (MalformedURLException mfe2) { | ||
| 3822 | url = null; | ||
| 3823 | } | ||
| 3824 | } | ||
| 3825 | if (url != null) { | ||
| 3826 | getStyleSheet().importStyleSheet(url); | ||
| 3827 | } | ||
| 3828 | } | ||
| 3829 | |||
| 3830 | /** | ||
| 3831 | * Returns true if can insert starting at <code>t</code>. This | ||
| 3832 | * will return false if the insert tag is set, and hasn't been found | ||
| 3833 | * yet. | ||
| 3834 | */ | ||
| 3835 | private boolean canInsertTag(HTML.Tag t, AttributeSet attr, | ||
| 3836 | boolean isBlockTag) { | ||
| 3837 | if (!foundInsertTag) { | ||
| 3838 | boolean needPImplied = ((t == HTML.Tag.IMPLIED) | ||
| 3839 | && (!inParagraph) | ||
| 3840 | && (!inPre)); | ||
| 3841 | if (needPImplied && (nextTagAfterPImplied != null)) { | ||
| 3842 | |||
| 3843 | /* | ||
| 3844 | * If insertTag == null then just proceed to | ||
| 3845 | * foundInsertTag() call below and return true. | ||
| 3846 | */ | ||
| 3847 | if (insertTag != null) { | ||
| 3848 | boolean nextTagIsInsertTag = | ||
| 3849 | isInsertTag(nextTagAfterPImplied); | ||
| 3850 | if ( (! nextTagIsInsertTag) || (! insertInsertTag) ) { | ||
| 3851 | return false; | ||
| 3852 | } | ||
| 3853 | } | ||
| 3854 | /* | ||
| 3855 | * Proceed to foundInsertTag() call... | ||
| 3856 | */ | ||
| 3857 | } else if ((insertTag != null && !isInsertTag(t)) | ||
| 3858 | || (insertAfterImplied | ||
| 3859 | && (attr == null | ||
| 3860 | || attr.isDefined(IMPLIED) | ||
| 3861 | || t == HTML.Tag.IMPLIED | ||
| 3862 | ) | ||
| 3863 | ) | ||
| 3864 | ) { | ||
| 3865 | return false; | ||
| 3866 | } | ||
| 3867 | |||
| 3868 | // Allow the insert if t matches the insert tag, or | ||
| 3869 | // insertAfterImplied is true and the element is implied. | ||
| 3870 | foundInsertTag(isBlockTag); | ||
| 3871 | if (!insertInsertTag) { | ||
| 3872 | return false; | ||
| 3873 | } | ||
| 3874 | } | ||
| 3875 | return true; | ||
| 3876 | } | ||
| 3877 | |||
| 3878 | private boolean isInsertTag(HTML.Tag tag) { | ||
| 3879 | return (insertTag == tag); | ||
| 3880 | } | ||
| 3881 | |||
| 3882 | private void foundInsertTag(boolean isBlockTag) { | ||
| 3883 | foundInsertTag = true; | ||
| 3884 | if (!insertAfterImplied && (popDepth > 0 || pushDepth > 0)) { | ||
| 3885 | try { | ||
| 3886 | if (offset == 0 || !getText(offset - 1, 1).equals("\n")) { | ||
| 3887 | // Need to insert a newline. | ||
| 3888 | AttributeSet newAttrs = null; | ||
| 3889 | boolean joinP = true; | ||
| 3890 | |||
| 3891 | if (offset != 0) { | ||
| 3892 | // Determine if we can use JoinPrevious, we can't | ||
| 3893 | // if the Element has some attributes that are | ||
| 3894 | // not meant to be duplicated. | ||
| 3895 | Element charElement = getCharacterElement | ||
| 3896 | (offset - 1); | ||
| 3897 | AttributeSet attrs = charElement.getAttributes(); | ||
| 3898 | |||
| 3899 | if (attrs.isDefined(StyleConstants. | ||
| 3900 | ComposedTextAttribute)) { | ||
| 3901 | joinP = false; | ||
| 3902 | } | ||
| 3903 | else { | ||
| 3904 | Object name = attrs.getAttribute | ||
| 3905 | (StyleConstants.NameAttribute); | ||
| 3906 | if (name instanceof HTML.Tag) { | ||
| 3907 | HTML.Tag tag = (HTML.Tag)name; | ||
| 3908 | if (tag == HTML.Tag.IMG || | ||
| 3909 | tag == HTML.Tag.HR || | ||
| 3910 | tag == HTML.Tag.COMMENT || | ||
| 3911 | (tag instanceof HTML.UnknownTag)) { | ||
| 3912 | joinP = false; | ||
| 3913 | } | ||
| 3914 | } | ||
| 3915 | } | ||
| 3916 | } | ||
| 3917 | if (!joinP) { | ||
| 3918 | // If not joining with the previous element, be | ||
| 3919 | // sure and set the name (otherwise it will be | ||
| 3920 | // inherited). | ||
| 3921 | newAttrs = new SimpleAttributeSet(); | ||
| 3922 | ((SimpleAttributeSet)newAttrs).addAttribute | ||
| 3923 | (StyleConstants.NameAttribute, | ||
| 3924 | HTML.Tag.CONTENT); | ||
| 3925 | } | ||
| 3926 | ElementSpec es = new ElementSpec(newAttrs, | ||
| 3927 | ElementSpec.ContentType, NEWLINE, 0, | ||
| 3928 | NEWLINE.length); | ||
| 3929 | if (joinP) { | ||
| 3930 | es.setDirection(ElementSpec. | ||
| 3931 | JoinPreviousDirection); | ||
| 3932 | } | ||
| 3933 | parseBuffer.addElement(es); | ||
| 3934 | } | ||
| 3935 | } catch (BadLocationException ble) {} | ||
| 3936 | } | ||
| 3937 | // pops | ||
| 3938 | for (int counter = 0; counter < popDepth; counter++) { | ||
| 3939 | parseBuffer.addElement(new ElementSpec(null, ElementSpec. | ||
| 3940 | EndTagType)); | ||
| 3941 | } | ||
| 3942 | // pushes | ||
| 3943 | for (int counter = 0; counter < pushDepth; counter++) { | ||
| 3944 | ElementSpec es = new ElementSpec(null, ElementSpec. | ||
| 3945 | StartTagType); | ||
| 3946 | es.setDirection(ElementSpec.JoinNextDirection); | ||
| 3947 | parseBuffer.addElement(es); | ||
| 3948 | } | ||
| 3949 | insertTagDepthDelta = depthTo(Math.max(0, offset - 1)) - | ||
| 3950 | popDepth + pushDepth - inBlock; | ||
| 3951 | if (isBlockTag) { | ||
| 3952 | // A start spec will be added (for this tag), so we account | ||
| 3953 | // for it here. | ||
| 3954 | insertTagDepthDelta++; | ||
| 3955 | } | ||
| 3956 | else { | ||
| 3957 | // An implied paragraph close (end spec) is going to be added, | ||
| 3958 | // so we account for it here. | ||
| 3959 | insertTagDepthDelta--; | ||
| 3960 | inParagraph = true; | ||
| 3961 | lastWasNewline = false; | ||
| 3962 | } | ||
| 3963 | } | ||
| 3964 | |||
| 3965 | /** | ||
| 3966 | * This is set to true when and end is invoked for <html>. | ||
| 3967 | */ | ||
| 3968 | private boolean receivedEndHTML; | ||
| 3969 | /** Number of times <code>flushBuffer</code> has been invoked. */ | ||
| 3970 | private int flushCount; | ||
| 3971 | /** If true, behavior is similiar to insertTag, but instead of | ||
| 3972 | * waiting for insertTag will wait for first Element without | ||
| 3973 | * an 'implied' attribute and begin inserting then. */ | ||
| 3974 | private boolean insertAfterImplied; | ||
| 3975 | /** This is only used if insertAfterImplied is true. If false, only | ||
| 3976 | * inserting content, and there is a trailing newline it is removed. */ | ||
| 3977 | private boolean wantsTrailingNewline; | ||
| 3978 | int threshold; | ||
| 3979 | int offset; | ||
| 3980 | boolean inParagraph = false; | ||
| 3981 | boolean impliedP = false; | ||
| 3982 | boolean inPre = false; | ||
| 3983 | boolean inTextArea = false; | ||
| 3984 | TextAreaDocument textAreaDocument = null; | ||
| 3985 | boolean inTitle = false; | ||
| 3986 | boolean lastWasNewline = true; | ||
| 3987 | boolean emptyAnchor; | ||
| 3988 | /** True if (!emptyDocument && insertTag == null), this is used so | ||
| 3989 | * much it is cached. */ | ||
| 3990 | boolean midInsert; | ||
| 3991 | /** True when the body has been encountered. */ | ||
| 3992 | boolean inBody; | ||
| 3993 | /** If non null, gives parent Tag that insert is to happen at. */ | ||
| 3994 | HTML.Tag insertTag; | ||
| 3995 | /** If true, the insertTag is inserted, otherwise elements after | ||
| 3996 | * the insertTag is found are inserted. */ | ||
| 3997 | boolean insertInsertTag; | ||
| 3998 | /** Set to true when insertTag has been found. */ | ||
| 3999 | boolean foundInsertTag; | ||
| 4000 | /** When foundInsertTag is set to true, this will be updated to | ||
| 4001 | * reflect the delta between the two structures. That is, it | ||
| 4002 | * will be the depth the inserts are happening at minus the | ||
| 4003 | * depth of the tags being passed in. A value of 0 (the common | ||
| 4004 | * case) indicates the structures match, a value greater than 0 indicates | ||
| 4005 | * the insert is happening at a deeper depth than the stream is | ||
| 4006 | * parsing, and a value less than 0 indicates the insert is happening earlier | ||
| 4007 | * in the tree that the parser thinks and that we will need to remove | ||
| 4008 | * EndTagType specs in the flushBuffer method. | ||
| 4009 | */ | ||
| 4010 | int insertTagDepthDelta; | ||
| 4011 | /** How many parents to ascend before insert new elements. */ | ||
| 4012 | int popDepth; | ||
| 4013 | /** How many parents to descend (relative to popDepth) before | ||
| 4014 | * inserting. */ | ||
| 4015 | int pushDepth; | ||
| 4016 | /** Last Map that was encountered. */ | ||
| 4017 | Map lastMap; | ||
| 4018 | /** Set to true when a style element is encountered. */ | ||
| 4019 | boolean inStyle = false; | ||
| 4020 | /** Name of style to use. Obtained from Meta tag. */ | ||
| 4021 | String defaultStyle; | ||
| 4022 | /** Vector describing styles that should be include. Will consist | ||
| 4023 | * of a bunch of HTML.Tags, which will either be: | ||
| 4024 | * <p>LINK: in which case it is followed by an AttributeSet | ||
| 4025 | * <p>STYLE: in which case the following element is a String | ||
| 4026 | * indicating the type (may be null), and the elements following | ||
| 4027 | * it until the next HTML.Tag are the rules as Strings. | ||
| 4028 | */ | ||
| 4029 | Vector<Object> styles; | ||
| 4030 | /** True if inside the head tag. */ | ||
| 4031 | boolean inHead = false; | ||
| 4032 | /** Set to true if the style language is text/css. Since this is | ||
| 4033 | * used alot, it is cached. */ | ||
| 4034 | boolean isStyleCSS; | ||
| 4035 | /** True if inserting into an empty document. */ | ||
| 4036 | boolean emptyDocument; | ||
| 4037 | /** Attributes from a style Attribute. */ | ||
| 4038 | AttributeSet styleAttributes; | ||
| 4039 | |||
| 4040 | /** | ||
| 4041 | * Current option, if in an option element (needed to | ||
| 4042 | * load the label. | ||
| 4043 | */ | ||
| 4044 | Option option; | ||
| 4045 | |||
| 4046 | protected Vector<ElementSpec> parseBuffer = new Vector<ElementSpec>(); | ||
| 4047 | protected MutableAttributeSet charAttr = new TaggedAttributeSet(); | ||
| 4048 | Stack<AttributeSet> charAttrStack = new Stack<AttributeSet>(); | ||
| 4049 | Hashtable<HTML.Tag, TagAction> tagMap; | ||
| 4050 | int inBlock = 0; | ||
| 4051 | |||
| 4052 | /** | ||
| 4053 | * This attribute is sometimes used to refer to next tag | ||
| 4054 | * to be handled after p-implied when the latter is | ||
| 4055 | * the current tag which is being handled. | ||
| 4056 | */ | ||
| 4057 | private HTML.Tag nextTagAfterPImplied = null; | ||
| 4058 | } | ||
| 4059 | |||
| 4060 | |||
| 4061 | /** | ||
| 4062 | * Used by StyleSheet to determine when to avoid removing HTML.Tags | ||
| 4063 | * matching StyleConstants. | ||
| 4064 | */ | ||
| 4065 | static class TaggedAttributeSet extends SimpleAttributeSet { | ||
| 4066 | TaggedAttributeSet() { | ||
| 4067 | super(); | ||
| 4068 | } | ||
| 4069 | } | ||
| 4070 | |||
| 4071 | |||
| 4072 | /** | ||
| 4073 | * An element that represents a chunk of text that has | ||
| 4074 | * a set of HTML character level attributes assigned to | ||
| 4075 | * it. | ||
| 4076 | */ | ||
| 4077 | public class RunElement extends LeafElement { | ||
| 4078 | |||
| 4079 | /** | ||
| 4080 | * Constructs an element that represents content within the | ||
| 4081 | * document (has no children). | ||
| 4082 | * | ||
| 4083 | * @param parent the parent element | ||
| 4084 | * @param a the element attributes | ||
| 4085 | * @param offs0 the start offset (must be at least 0) | ||
| 4086 | * @param offs1 the end offset (must be at least offs0) | ||
| 4087 | * @since 1.4 | ||
| 4088 | */ | ||
| 4089 | public RunElement(Element parent, AttributeSet a, int offs0, int offs1) { | ||
| 4090 | super(parent, a, offs0, offs1); | ||
| 4091 | } | ||
| 4092 | |||
| 4093 | /** | ||
| 4094 | * Gets the name of the element. | ||
| 4095 | * | ||
| 4096 | * @return the name, null if none | ||
| 4097 | */ | ||
| 4098 | public String getName() { | ||
| 4099 | Object o = getAttribute(StyleConstants.NameAttribute); | ||
| 4100 | if (o != null) { | ||
| 4101 | return o.toString(); | ||
| 4102 | } | ||
| 4103 | return super.getName(); | ||
| 4104 | } | ||
| 4105 | |||
| 4106 | /** | ||
| 4107 | * Gets the resolving parent. HTML attributes are not inherited | ||
| 4108 | * at the model level so we override this to return null. | ||
| 4109 | * | ||
| 4110 | * @return null, there are none | ||
| 4111 | * @see AttributeSet#getResolveParent | ||
| 4112 | */ | ||
| 4113 | public AttributeSet getResolveParent() { | ||
| 4114 | return null; | ||
| 4115 | } | ||
| 4116 | } | ||
| 4117 | |||
| 4118 | /** | ||
| 4119 | * An element that represents a structural <em>block</em> of | ||
| 4120 | * HTML. | ||
| 4121 | */ | ||
| 4122 | public class BlockElement extends BranchElement { | ||
| 4123 | |||
| 4124 | /** | ||
| 4125 | * Constructs a composite element that initially contains | ||
| 4126 | * no children. | ||
| 4127 | * | ||
| 4128 | * @param parent the parent element | ||
| 4129 | * @param a the attributes for the element | ||
| 4130 | * @since 1.4 | ||
| 4131 | */ | ||
| 4132 | public BlockElement(Element parent, AttributeSet a) { | ||
| 4133 | super(parent, a); | ||
| 4134 | } | ||
| 4135 | |||
| 4136 | /** | ||
| 4137 | * Gets the name of the element. | ||
| 4138 | * | ||
| 4139 | * @return the name, null if none | ||
| 4140 | */ | ||
| 4141 | public String getName() { | ||
| 4142 | Object o = getAttribute(StyleConstants.NameAttribute); | ||
| 4143 | if (o != null) { | ||
| 4144 | return o.toString(); | ||
| 4145 | } | ||
| 4146 | return super.getName(); | ||
| 4147 | } | ||
| 4148 | |||
| 4149 | /** | ||
| 4150 | * Gets the resolving parent. HTML attributes are not inherited | ||
| 4151 | * at the model level so we override this to return null. | ||
| 4152 | * | ||
| 4153 | * @return null, there are none | ||
| 4154 | * @see AttributeSet#getResolveParent | ||
| 4155 | */ | ||
| 4156 | public AttributeSet getResolveParent() { | ||
| 4157 | return null; | ||
| 4158 | } | ||
| 4159 | |||
| 4160 | } | ||
| 4161 | |||
| 4162 | |||
| 4163 | /** | ||
| 4164 | * Document that allows you to set the maximum length of the text. | ||
| 4165 | */ | ||
| 4166 | private static class FixedLengthDocument extends PlainDocument { | ||
| 4167 | private int maxLength; | ||
| 4168 | |||
| 4169 | public FixedLengthDocument(int maxLength) { | ||
| 4170 | this.maxLength = maxLength; | ||
| 4171 | } | ||
| 4172 | |||
| 4173 | public void insertString(int offset, String str, AttributeSet a) | ||
| 4174 | throws BadLocationException { | ||
| 4175 | if (str != null && str.length() + getLength() <= maxLength) { | ||
| 4176 | super.insertString(offset, str, a); | ||
| 4177 | } | ||
| 4178 | } | ||
| 4179 | } | ||
| 4180 | } | ||