J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2005 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | package javax.swing.text.html; |
| 26 | |
| 27 | import sun.swing.SwingUtilities2; |
| 28 | import java.util.*; |
| 29 | import java.awt.*; |
| 30 | import java.io.*; |
| 31 | import java.net.*; |
| 32 | import javax.swing.Icon; |
| 33 | import javax.swing.ImageIcon; |
| 34 | import javax.swing.border.*; |
| 35 | import javax.swing.event.ChangeListener; |
| 36 | import javax.swing.text.*; |
| 37 | |
| 38 | /** |
| 39 | * Support for defining the visual characteristics of |
| 40 | * HTML views being rendered. The StyleSheet is used to |
| 41 | * translate the HTML model into visual characteristics. |
| 42 | * This enables views to be customized by a look-and-feel, |
| 43 | * multiple views over the same model can be rendered |
| 44 | * differently, etc. This can be thought of as a CSS |
| 45 | * rule repository. The key for CSS attributes is an |
| 46 | * object of type CSS.Attribute. The type of the value |
| 47 | * is up to the StyleSheet implementation, but the |
| 48 | * <code>toString</code> method is required |
| 49 | * to return a string representation of CSS value. |
| 50 | * <p> |
| 51 | * The primary entry point for HTML View implementations |
| 52 | * to get their attributes is the |
| 53 | * <a href="#getViewAttributes">getViewAttributes</a> |
| 54 | * method. This should be implemented to establish the |
| 55 | * desired policy used to associate attributes with the view. |
| 56 | * Each HTMLEditorKit (i.e. and therefore each associated |
| 57 | * JEditorPane) can have its own StyleSheet, but by default one |
| 58 | * sheet will be shared by all of the HTMLEditorKit instances. |
| 59 | * HTMLDocument instance can also have a StyleSheet, which |
| 60 | * holds the document-specific CSS specifications. |
| 61 | * <p> |
| 62 | * In order for Views to store less state and therefore be |
| 63 | * more lightweight, the StyleSheet can act as a factory for |
| 64 | * painters that handle some of the rendering tasks. This allows |
| 65 | * implementations to determine what they want to cache |
| 66 | * and have the sharing potentially at the level that a |
| 67 | * selector is common to multiple views. Since the StyleSheet |
| 68 | * may be used by views over multiple documents and typically |
| 69 | * the HTML attributes don't effect the selector being used, |
| 70 | * the potential for sharing is significant. |
| 71 | * <p> |
| 72 | * The rules are stored as named styles, and other information |
| 73 | * is stored to translate the context of an element to a |
| 74 | * rule quickly. The following code fragment will display |
| 75 | * the named styles, and therefore the CSS rules contained. |
| 76 | * <code><pre> |
| 77 | * |
| 78 | * import java.util.*; |
| 79 | * import javax.swing.text.*; |
| 80 | * import javax.swing.text.html.*; |
| 81 | * |
| 82 | * public class ShowStyles { |
| 83 | * |
| 84 | * public static void main(String[] args) { |
| 85 | * HTMLEditorKit kit = new HTMLEditorKit(); |
| 86 | * HTMLDocument doc = (HTMLDocument) kit.createDefaultDocument(); |
| 87 | * StyleSheet styles = doc.getStyleSheet(); |
| 88 | * |
| 89 | * Enumeration rules = styles.getStyleNames(); |
| 90 | * while (rules.hasMoreElements()) { |
| 91 | * String name = (String) rules.nextElement(); |
| 92 | * Style rule = styles.getStyle(name); |
| 93 | * System.out.println(rule.toString()); |
| 94 | * } |
| 95 | * System.exit(0); |
| 96 | * } |
| 97 | * } |
| 98 | * |
| 99 | * </pre></code> |
| 100 | * <p> |
| 101 | * The semantics for when a CSS style should overide visual attributes |
| 102 | * defined by an element are not well defined. For example, the html |
| 103 | * <code><body bgcolor=red></code> makes the body have a red |
| 104 | * background. But if the html file also contains the CSS rule |
| 105 | * <code>body { background: blue }</code> it becomes less clear as to |
| 106 | * what color the background of the body should be. The current |
| 107 | * implemention gives visual attributes defined in the element the |
| 108 | * highest precedence, that is they are always checked before any styles. |
| 109 | * Therefore, in the previous example the background would have a |
| 110 | * red color as the body element defines the background color to be red. |
| 111 | * <p> |
| 112 | * As already mentioned this supports CSS. We don't support the full CSS |
| 113 | * spec. Refer to the javadoc of the CSS class to see what properties |
| 114 | * we support. The two major CSS parsing related |
| 115 | * concepts we do not currently |
| 116 | * support are pseudo selectors, such as <code>A:link { color: red }</code>, |
| 117 | * and the <code>important</code> modifier. |
| 118 | * <p> |
| 119 | * <font color="red">Note: This implementation is currently |
| 120 | * incomplete. It can be replaced with alternative implementations |
| 121 | * that are complete. Future versions of this class will provide |
| 122 | * better CSS support.</font> |
| 123 | * |
| 124 | * @author Timothy Prinzing |
| 125 | * @author Sunita Mani |
| 126 | * @author Sara Swanson |
| 127 | * @author Jill Nakata |
| 128 | */ |
| 129 | public class StyleSheet extends StyleContext { |
| 130 | // As the javadoc states, this class maintains a mapping between |
| 131 | // a CSS selector (such as p.bar) and a Style. |
| 132 | // This consists of a number of parts: |
| 133 | // . Each selector is broken down into its constituent simple selectors, |
| 134 | // and stored in an inverted graph, for example: |
| 135 | // p { color: red } ol p { font-size: 10pt } ul p { font-size: 12pt } |
| 136 | // results in the graph: |
| 137 | // root |
| 138 | // | |
| 139 | // p |
| 140 | // / \ |
| 141 | // ol ul |
| 142 | // each node (an instance of SelectorMapping) has an associated |
| 143 | // specificity and potentially a Style. |
| 144 | // . Every rule that is asked for (either by way of getRule(String) or |
| 145 | // getRule(HTML.Tag, Element)) results in a unique instance of |
| 146 | // ResolvedStyle. ResolvedStyles contain the AttributeSets from the |
| 147 | // SelectorMapping. |
| 148 | // . When a new rule is created it is inserted into the graph, and |
| 149 | // the AttributeSets of each ResolvedStyles are updated appropriately. |
| 150 | // . This class creates special AttributeSets, LargeConversionSet and |
| 151 | // SmallConversionSet, that maintain a mapping between StyleConstants |
| 152 | // and CSS so that developers that wish to use the StyleConstants |
| 153 | // methods can do so. |
| 154 | // . When one of the AttributeSets is mutated by way of a |
| 155 | // StyleConstants key, all the associated CSS keys are removed. This is |
| 156 | // done so that the two representations don't get out of sync. For |
| 157 | // example, if the developer adds StyleConsants.BOLD, FALSE to an |
| 158 | // AttributeSet that contains HTML.Tag.B, the HTML.Tag.B entry will |
| 159 | // be removed. |
| 160 | |
| 161 | /** |
| 162 | * Construct a StyleSheet |
| 163 | */ |
| 164 | public StyleSheet() { |
| 165 | super(); |
| 166 | selectorMapping = new SelectorMapping(0); |
| 167 | resolvedStyles = new Hashtable(); |
| 168 | if (css == null) { |
| 169 | css = new CSS(); |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Fetches the style to use to render the given type |
| 175 | * of HTML tag. The element given is representing |
| 176 | * the tag and can be used to determine the nesting |
| 177 | * for situations where the attributes will differ |
| 178 | * if nesting inside of elements. |
| 179 | * |
| 180 | * @param t the type to translate to visual attributes |
| 181 | * @param e the element representing the tag; the element |
| 182 | * can be used to determine the nesting for situations where |
| 183 | * the attributes will differ if nested inside of other |
| 184 | * elements |
| 185 | * @return the set of CSS attributes to use to render |
| 186 | * the tag |
| 187 | */ |
| 188 | public Style getRule(HTML.Tag t, Element e) { |
| 189 | SearchBuffer sb = SearchBuffer.obtainSearchBuffer(); |
| 190 | |
| 191 | try { |
| 192 | // Build an array of all the parent elements. |
| 193 | Vector searchContext = sb.getVector(); |
| 194 | |
| 195 | for (Element p = e; p != null; p = p.getParentElement()) { |
| 196 | searchContext.addElement(p); |
| 197 | } |
| 198 | |
| 199 | // Build a fully qualified selector. |
| 200 | int n = searchContext.size(); |
| 201 | StringBuffer cacheLookup = sb.getStringBuffer(); |
| 202 | AttributeSet attr; |
| 203 | String eName; |
| 204 | Object name; |
| 205 | |
| 206 | // >= 1 as the HTML.Tag for the 0th element is passed in. |
| 207 | for (int counter = n - 1; counter >= 1; counter--) { |
| 208 | e = (Element)searchContext.elementAt(counter); |
| 209 | attr = e.getAttributes(); |
| 210 | name = attr.getAttribute(StyleConstants.NameAttribute); |
| 211 | eName = name.toString(); |
| 212 | cacheLookup.append(eName); |
| 213 | if (attr != null) { |
| 214 | if (attr.isDefined(HTML.Attribute.ID)) { |
| 215 | cacheLookup.append('#'); |
| 216 | cacheLookup.append(attr.getAttribute |
| 217 | (HTML.Attribute.ID)); |
| 218 | } |
| 219 | else if (attr.isDefined(HTML.Attribute.CLASS)) { |
| 220 | cacheLookup.append('.'); |
| 221 | cacheLookup.append(attr.getAttribute |
| 222 | (HTML.Attribute.CLASS)); |
| 223 | } |
| 224 | } |
| 225 | cacheLookup.append(' '); |
| 226 | } |
| 227 | cacheLookup.append(t.toString()); |
| 228 | e = (Element)searchContext.elementAt(0); |
| 229 | attr = e.getAttributes(); |
| 230 | if (e.isLeaf()) { |
| 231 | // For leafs, we use the second tier attributes. |
| 232 | Object testAttr = attr.getAttribute(t); |
| 233 | if (testAttr instanceof AttributeSet) { |
| 234 | attr = (AttributeSet)testAttr; |
| 235 | } |
| 236 | else { |
| 237 | attr = null; |
| 238 | } |
| 239 | } |
| 240 | if (attr != null) { |
| 241 | if (attr.isDefined(HTML.Attribute.ID)) { |
| 242 | cacheLookup.append('#'); |
| 243 | cacheLookup.append(attr.getAttribute(HTML.Attribute.ID)); |
| 244 | } |
| 245 | else if (attr.isDefined(HTML.Attribute.CLASS)) { |
| 246 | cacheLookup.append('.'); |
| 247 | cacheLookup.append(attr.getAttribute |
| 248 | (HTML.Attribute.CLASS)); |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | Style style = getResolvedStyle(cacheLookup.toString(), |
| 253 | searchContext, t); |
| 254 | return style; |
| 255 | } |
| 256 | finally { |
| 257 | SearchBuffer.releaseSearchBuffer(sb); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | /** |
| 262 | * Fetches the rule that best matches the selector given |
| 263 | * in string form. Where <code>selector</code> is a space separated |
| 264 | * String of the element names. For example, <code>selector</code> |
| 265 | * might be 'html body tr td''<p> |
| 266 | * The attributes of the returned Style will change |
| 267 | * as rules are added and removed. That is if you to ask for a rule |
| 268 | * with a selector "table p" and a new rule was added with a selector |
| 269 | * of "p" the returned Style would include the new attributes from |
| 270 | * the rule "p". |
| 271 | */ |
| 272 | public Style getRule(String selector) { |
| 273 | selector = cleanSelectorString(selector); |
| 274 | if (selector != null) { |
| 275 | Style style = getResolvedStyle(selector); |
| 276 | return style; |
| 277 | } |
| 278 | return null; |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Adds a set of rules to the sheet. The rules are expected to |
| 283 | * be in valid CSS format. Typically this would be called as |
| 284 | * a result of parsing a <style> tag. |
| 285 | */ |
| 286 | public void addRule(String rule) { |
| 287 | if (rule != null) { |
| 288 | //tweaks to control display properties |
| 289 | //see BasicEditorPaneUI |
| 290 | final String baseUnitsDisable = "BASE_SIZE_DISABLE"; |
| 291 | final String baseUnits = "BASE_SIZE "; |
| 292 | final String w3cLengthUnitsEnable = "W3C_LENGTH_UNITS_ENABLE"; |
| 293 | final String w3cLengthUnitsDisable = "W3C_LENGTH_UNITS_DISABLE"; |
| 294 | if (rule == baseUnitsDisable) { |
| 295 | sizeMap = sizeMapDefault; |
| 296 | } else if (rule.startsWith(baseUnits)) { |
| 297 | rebaseSizeMap(Integer. |
| 298 | parseInt(rule.substring(baseUnits.length()))); |
| 299 | } else if (rule == w3cLengthUnitsEnable) { |
| 300 | w3cLengthUnits = true; |
| 301 | } else if (rule == w3cLengthUnitsDisable) { |
| 302 | w3cLengthUnits = false; |
| 303 | } else { |
| 304 | CssParser parser = new CssParser(); |
| 305 | try { |
| 306 | parser.parse(getBase(), new StringReader(rule), false, false); |
| 307 | } catch (IOException ioe) { } |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * Translates a CSS declaration to an AttributeSet that represents |
| 314 | * the CSS declaration. Typically this would be called as a |
| 315 | * result of encountering an HTML style attribute. |
| 316 | */ |
| 317 | public AttributeSet getDeclaration(String decl) { |
| 318 | if (decl == null) { |
| 319 | return SimpleAttributeSet.EMPTY; |
| 320 | } |
| 321 | CssParser parser = new CssParser(); |
| 322 | return parser.parseDeclaration(decl); |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Loads a set of rules that have been specified in terms of |
| 327 | * CSS1 grammar. If there are collisions with existing rules, |
| 328 | * the newly specified rule will win. |
| 329 | * |
| 330 | * @param in the stream to read the CSS grammar from |
| 331 | * @param ref the reference URL. This value represents the |
| 332 | * location of the stream and may be null. All relative |
| 333 | * URLs specified in the stream will be based upon this |
| 334 | * parameter. |
| 335 | */ |
| 336 | public void loadRules(Reader in, URL ref) throws IOException { |
| 337 | CssParser parser = new CssParser(); |
| 338 | parser.parse(ref, in, false, false); |
| 339 | } |
| 340 | |
| 341 | /** |
| 342 | * Fetches a set of attributes to use in the view for |
| 343 | * displaying. This is basically a set of attributes that |
| 344 | * can be used for View.getAttributes. |
| 345 | */ |
| 346 | public AttributeSet getViewAttributes(View v) { |
| 347 | return new ViewAttributeSet(v); |
| 348 | } |
| 349 | |
| 350 | /** |
| 351 | * Removes a named style previously added to the document. |
| 352 | * |
| 353 | * @param nm the name of the style to remove |
| 354 | */ |
| 355 | public void removeStyle(String nm) { |
| 356 | Style aStyle = getStyle(nm); |
| 357 | |
| 358 | if (aStyle != null) { |
| 359 | String selector = cleanSelectorString(nm); |
| 360 | String[] selectors = getSimpleSelectors(selector); |
| 361 | synchronized(this) { |
| 362 | SelectorMapping mapping = getRootSelectorMapping(); |
| 363 | for (int i = selectors.length - 1; i >= 0; i--) { |
| 364 | mapping = mapping.getChildSelectorMapping(selectors[i], |
| 365 | true); |
| 366 | } |
| 367 | Style rule = mapping.getStyle(); |
| 368 | if (rule != null) { |
| 369 | mapping.setStyle(null); |
| 370 | if (resolvedStyles.size() > 0) { |
| 371 | Enumeration values = resolvedStyles.elements(); |
| 372 | while (values.hasMoreElements()) { |
| 373 | ResolvedStyle style = (ResolvedStyle)values. |
| 374 | nextElement(); |
| 375 | style.removeStyle(rule); |
| 376 | } |
| 377 | } |
| 378 | } |
| 379 | } |
| 380 | } |
| 381 | super.removeStyle(nm); |
| 382 | } |
| 383 | |
| 384 | /** |
| 385 | * Adds the rules from the StyleSheet <code>ss</code> to those of |
| 386 | * the receiver. <code>ss's</code> rules will override the rules of |
| 387 | * any previously added style sheets. An added StyleSheet will never |
| 388 | * override the rules of the receiving style sheet. |
| 389 | * |
| 390 | * @since 1.3 |
| 391 | */ |
| 392 | public void addStyleSheet(StyleSheet ss) { |
| 393 | synchronized(this) { |
| 394 | if (linkedStyleSheets == null) { |
| 395 | linkedStyleSheets = new Vector(); |
| 396 | } |
| 397 | if (!linkedStyleSheets.contains(ss)) { |
| 398 | int index = 0; |
| 399 | if (ss instanceof javax.swing.plaf.UIResource |
| 400 | && linkedStyleSheets.size() > 1) { |
| 401 | index = linkedStyleSheets.size() - 1; |
| 402 | } |
| 403 | linkedStyleSheets.insertElementAt(ss, index); |
| 404 | linkStyleSheetAt(ss, index); |
| 405 | } |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | /** |
| 410 | * Removes the StyleSheet <code>ss</code> from those of the receiver. |
| 411 | * |
| 412 | * @since 1.3 |
| 413 | */ |
| 414 | public void removeStyleSheet(StyleSheet ss) { |
| 415 | synchronized(this) { |
| 416 | if (linkedStyleSheets != null) { |
| 417 | int index = linkedStyleSheets.indexOf(ss); |
| 418 | if (index != -1) { |
| 419 | linkedStyleSheets.removeElementAt(index); |
| 420 | unlinkStyleSheet(ss, index); |
| 421 | if (index == 0 && linkedStyleSheets.size() == 0) { |
| 422 | linkedStyleSheets = null; |
| 423 | } |
| 424 | } |
| 425 | } |
| 426 | } |
| 427 | } |
| 428 | |
| 429 | // |
| 430 | // The following is used to import style sheets. |
| 431 | // |
| 432 | |
| 433 | /** |
| 434 | * Returns an array of the linked StyleSheets. Will return null |
| 435 | * if there are no linked StyleSheets. |
| 436 | * |
| 437 | * @since 1.3 |
| 438 | */ |
| 439 | public StyleSheet[] getStyleSheets() { |
| 440 | StyleSheet[] retValue; |
| 441 | |
| 442 | synchronized(this) { |
| 443 | if (linkedStyleSheets != null) { |
| 444 | retValue = new StyleSheet[linkedStyleSheets.size()]; |
| 445 | linkedStyleSheets.copyInto(retValue); |
| 446 | } |
| 447 | else { |
| 448 | retValue = null; |
| 449 | } |
| 450 | } |
| 451 | return retValue; |
| 452 | } |
| 453 | |
| 454 | /** |
| 455 | * Imports a style sheet from <code>url</code>. The resulting rules |
| 456 | * are directly added to the receiver. If you do not want the rules |
| 457 | * to become part of the receiver, create a new StyleSheet and use |
| 458 | * addStyleSheet to link it in. |
| 459 | * |
| 460 | * @since 1.3 |
| 461 | */ |
| 462 | public void importStyleSheet(URL url) { |
| 463 | try { |
| 464 | InputStream is; |
| 465 | |
| 466 | is = url.openStream(); |
| 467 | Reader r = new BufferedReader(new InputStreamReader(is)); |
| 468 | CssParser parser = new CssParser(); |
| 469 | parser.parse(url, r, false, true); |
| 470 | r.close(); |
| 471 | is.close(); |
| 472 | } catch (Throwable e) { |
| 473 | // on error we simply have no styles... the html |
| 474 | // will look mighty wrong but still function. |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * Sets the base. All import statements that are relative, will be |
| 480 | * relative to <code>base</code>. |
| 481 | * |
| 482 | * @since 1.3 |
| 483 | */ |
| 484 | public void setBase(URL base) { |
| 485 | this.base = base; |
| 486 | } |
| 487 | |
| 488 | /** |
| 489 | * Returns the base. |
| 490 | * |
| 491 | * @since 1.3 |
| 492 | */ |
| 493 | public URL getBase() { |
| 494 | return base; |
| 495 | } |
| 496 | |
| 497 | /** |
| 498 | * Adds a CSS attribute to the given set. |
| 499 | * |
| 500 | * @since 1.3 |
| 501 | */ |
| 502 | public void addCSSAttribute(MutableAttributeSet attr, CSS.Attribute key, |
| 503 | String value) { |
| 504 | css.addInternalCSSValue(attr, key, value); |
| 505 | } |
| 506 | |
| 507 | /** |
| 508 | * Adds a CSS attribute to the given set. |
| 509 | * |
| 510 | * @since 1.3 |
| 511 | */ |
| 512 | public boolean addCSSAttributeFromHTML(MutableAttributeSet attr, |
| 513 | CSS.Attribute key, String value) { |
| 514 | Object iValue = css.getCssValue(key, value); |
| 515 | if (iValue != null) { |
| 516 | attr.addAttribute(key, iValue); |
| 517 | return true; |
| 518 | } |
| 519 | return false; |
| 520 | } |
| 521 | |
| 522 | // ---- Conversion functionality --------------------------------- |
| 523 | |
| 524 | /** |
| 525 | * Converts a set of HTML attributes to an equivalent |
| 526 | * set of CSS attributes. |
| 527 | * |
| 528 | * @param htmlAttrSet AttributeSet containing the HTML attributes. |
| 529 | */ |
| 530 | public AttributeSet translateHTMLToCSS(AttributeSet htmlAttrSet) { |
| 531 | AttributeSet cssAttrSet = css.translateHTMLToCSS(htmlAttrSet); |
| 532 | |
| 533 | MutableAttributeSet cssStyleSet = addStyle(null, null); |
| 534 | cssStyleSet.addAttributes(cssAttrSet); |
| 535 | |
| 536 | return cssStyleSet; |
| 537 | } |
| 538 | |
| 539 | /** |
| 540 | * Adds an attribute to the given set, and returns |
| 541 | * the new representative set. This is reimplemented to |
| 542 | * convert StyleConstant attributes to CSS prior to forwarding |
| 543 | * to the superclass behavior. The StyleConstants attribute |
| 544 | * has no corresponding CSS entry, the StyleConstants attribute |
| 545 | * is stored (but will likely be unused). |
| 546 | * |
| 547 | * @param old the old attribute set |
| 548 | * @param key the non-null attribute key |
| 549 | * @param value the attribute value |
| 550 | * @return the updated attribute set |
| 551 | * @see MutableAttributeSet#addAttribute |
| 552 | */ |
| 553 | public AttributeSet addAttribute(AttributeSet old, Object key, |
| 554 | Object value) { |
| 555 | if (css == null) { |
| 556 | // supers constructor will call this before returning, |
| 557 | // and we need to make sure CSS is non null. |
| 558 | css = new CSS(); |
| 559 | } |
| 560 | if (key instanceof StyleConstants) { |
| 561 | HTML.Tag tag = HTML.getTagForStyleConstantsKey( |
| 562 | (StyleConstants)key); |
| 563 | |
| 564 | if (tag != null && old.isDefined(tag)) { |
| 565 | old = removeAttribute(old, tag); |
| 566 | } |
| 567 | |
| 568 | Object cssValue = css.styleConstantsValueToCSSValue |
| 569 | ((StyleConstants)key, value); |
| 570 | if (cssValue != null) { |
| 571 | Object cssKey = css.styleConstantsKeyToCSSKey |
| 572 | ((StyleConstants)key); |
| 573 | if (cssKey != null) { |
| 574 | return super.addAttribute(old, cssKey, cssValue); |
| 575 | } |
| 576 | } |
| 577 | } |
| 578 | return super.addAttribute(old, key, value); |
| 579 | } |
| 580 | |
| 581 | /** |
| 582 | * Adds a set of attributes to the element. If any of these attributes |
| 583 | * are StyleConstants attributes, they will be converted to CSS prior |
| 584 | * to forwarding to the superclass behavior. |
| 585 | * |
| 586 | * @param old the old attribute set |
| 587 | * @param attr the attributes to add |
| 588 | * @return the updated attribute set |
| 589 | * @see MutableAttributeSet#addAttribute |
| 590 | */ |
| 591 | public AttributeSet addAttributes(AttributeSet old, AttributeSet attr) { |
| 592 | if (!(attr instanceof HTMLDocument.TaggedAttributeSet)) { |
| 593 | old = removeHTMLTags(old, attr); |
| 594 | } |
| 595 | return super.addAttributes(old, convertAttributeSet(attr)); |
| 596 | } |
| 597 | |
| 598 | /** |
| 599 | * Removes an attribute from the set. If the attribute is a StyleConstants |
| 600 | * attribute, the request will be converted to a CSS attribute prior to |
| 601 | * forwarding to the superclass behavior. |
| 602 | * |
| 603 | * @param old the old set of attributes |
| 604 | * @param key the non-null attribute name |
| 605 | * @return the updated attribute set |
| 606 | * @see MutableAttributeSet#removeAttribute |
| 607 | */ |
| 608 | public AttributeSet removeAttribute(AttributeSet old, Object key) { |
| 609 | if (key instanceof StyleConstants) { |
| 610 | HTML.Tag tag = HTML.getTagForStyleConstantsKey( |
| 611 | (StyleConstants)key); |
| 612 | if (tag != null) { |
| 613 | old = super.removeAttribute(old, tag); |
| 614 | } |
| 615 | |
| 616 | Object cssKey = css.styleConstantsKeyToCSSKey((StyleConstants)key); |
| 617 | if (cssKey != null) { |
| 618 | return super.removeAttribute(old, cssKey); |
| 619 | } |
| 620 | } |
| 621 | return super.removeAttribute(old, key); |
| 622 | } |
| 623 | |
| 624 | /** |
| 625 | * Removes a set of attributes for the element. If any of the attributes |
| 626 | * is a StyleConstants attribute, the request will be converted to a CSS |
| 627 | * attribute prior to forwarding to the superclass behavior. |
| 628 | * |
| 629 | * @param old the old attribute set |
| 630 | * @param names the attribute names |
| 631 | * @return the updated attribute set |
| 632 | * @see MutableAttributeSet#removeAttributes |
| 633 | */ |
| 634 | public AttributeSet removeAttributes(AttributeSet old, Enumeration<?> names) { |
| 635 | // PENDING: Should really be doing something similar to |
| 636 | // removeHTMLTags here, but it is rather expensive to have to |
| 637 | // clone names |
| 638 | return super.removeAttributes(old, names); |
| 639 | } |
| 640 | |
| 641 | /** |
| 642 | * Removes a set of attributes. If any of the attributes |
| 643 | * is a StyleConstants attribute, the request will be converted to a CSS |
| 644 | * attribute prior to forwarding to the superclass behavior. |
| 645 | * |
| 646 | * @param old the old attribute set |
| 647 | * @param attrs the attributes |
| 648 | * @return the updated attribute set |
| 649 | * @see MutableAttributeSet#removeAttributes |
| 650 | */ |
| 651 | public AttributeSet removeAttributes(AttributeSet old, AttributeSet attrs) { |
| 652 | if (old != attrs) { |
| 653 | old = removeHTMLTags(old, attrs); |
| 654 | } |
| 655 | return super.removeAttributes(old, convertAttributeSet(attrs)); |
| 656 | } |
| 657 | |
| 658 | /** |
| 659 | * Creates a compact set of attributes that might be shared. |
| 660 | * This is a hook for subclasses that want to alter the |
| 661 | * behavior of SmallAttributeSet. This can be reimplemented |
| 662 | * to return an AttributeSet that provides some sort of |
| 663 | * attribute conversion. |
| 664 | * |
| 665 | * @param a The set of attributes to be represented in the |
| 666 | * the compact form. |
| 667 | */ |
| 668 | protected SmallAttributeSet createSmallAttributeSet(AttributeSet a) { |
| 669 | return new SmallConversionSet(a); |
| 670 | } |
| 671 | |
| 672 | /** |
| 673 | * Creates a large set of attributes that should trade off |
| 674 | * space for time. This set will not be shared. This is |
| 675 | * a hook for subclasses that want to alter the behavior |
| 676 | * of the larger attribute storage format (which is |
| 677 | * SimpleAttributeSet by default). This can be reimplemented |
| 678 | * to return a MutableAttributeSet that provides some sort of |
| 679 | * attribute conversion. |
| 680 | * |
| 681 | * @param a The set of attributes to be represented in the |
| 682 | * the larger form. |
| 683 | */ |
| 684 | protected MutableAttributeSet createLargeAttributeSet(AttributeSet a) { |
| 685 | return new LargeConversionSet(a); |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * For any StyleConstants key in attr that has an associated HTML.Tag, |
| 690 | * it is removed from old. The resulting AttributeSet is then returned. |
| 691 | */ |
| 692 | private AttributeSet removeHTMLTags(AttributeSet old, AttributeSet attr) { |
| 693 | if (!(attr instanceof LargeConversionSet) && |
| 694 | !(attr instanceof SmallConversionSet)) { |
| 695 | Enumeration names = attr.getAttributeNames(); |
| 696 | |
| 697 | while (names.hasMoreElements()) { |
| 698 | Object key = names.nextElement(); |
| 699 | |
| 700 | if (key instanceof StyleConstants) { |
| 701 | HTML.Tag tag = HTML.getTagForStyleConstantsKey( |
| 702 | (StyleConstants)key); |
| 703 | |
| 704 | if (tag != null && old.isDefined(tag)) { |
| 705 | old = super.removeAttribute(old, tag); |
| 706 | } |
| 707 | } |
| 708 | } |
| 709 | } |
| 710 | return old; |
| 711 | } |
| 712 | |
| 713 | /** |
| 714 | * Converts a set of attributes (if necessary) so that |
| 715 | * any attributes that were specified as StyleConstants |
| 716 | * attributes and have a CSS mapping, will be converted |
| 717 | * to CSS attributes. |
| 718 | */ |
| 719 | AttributeSet convertAttributeSet(AttributeSet a) { |
| 720 | if ((a instanceof LargeConversionSet) || |
| 721 | (a instanceof SmallConversionSet)) { |
| 722 | // known to be converted. |
| 723 | return a; |
| 724 | } |
| 725 | // in most cases, there are no StyleConstants attributes |
| 726 | // so we iterate the collection of keys to avoid creating |
| 727 | // a new set. |
| 728 | Enumeration names = a.getAttributeNames(); |
| 729 | while (names.hasMoreElements()) { |
| 730 | Object name = names.nextElement(); |
| 731 | if (name instanceof StyleConstants) { |
| 732 | // we really need to do a conversion, iterate again |
| 733 | // building a new set. |
| 734 | MutableAttributeSet converted = new LargeConversionSet(); |
| 735 | Enumeration keys = a.getAttributeNames(); |
| 736 | while (keys.hasMoreElements()) { |
| 737 | Object key = keys.nextElement(); |
| 738 | Object cssValue = null; |
| 739 | if (key instanceof StyleConstants) { |
| 740 | // convert the StyleConstants attribute if possible |
| 741 | Object cssKey = css.styleConstantsKeyToCSSKey |
| 742 | ((StyleConstants)key); |
| 743 | if (cssKey != null) { |
| 744 | Object value = a.getAttribute(key); |
| 745 | cssValue = css.styleConstantsValueToCSSValue |
| 746 | ((StyleConstants)key, value); |
| 747 | if (cssValue != null) { |
| 748 | converted.addAttribute(cssKey, cssValue); |
| 749 | } |
| 750 | } |
| 751 | } |
| 752 | if (cssValue == null) { |
| 753 | converted.addAttribute(key, a.getAttribute(key)); |
| 754 | } |
| 755 | } |
| 756 | return converted; |
| 757 | } |
| 758 | } |
| 759 | return a; |
| 760 | } |
| 761 | |
| 762 | /** |
| 763 | * Large set of attributes that does conversion of requests |
| 764 | * for attributes of type StyleConstants. |
| 765 | */ |
| 766 | class LargeConversionSet extends SimpleAttributeSet { |
| 767 | |
| 768 | /** |
| 769 | * Creates a new attribute set based on a supplied set of attributes. |
| 770 | * |
| 771 | * @param source the set of attributes |
| 772 | */ |
| 773 | public LargeConversionSet(AttributeSet source) { |
| 774 | super(source); |
| 775 | } |
| 776 | |
| 777 | public LargeConversionSet() { |
| 778 | super(); |
| 779 | } |
| 780 | |
| 781 | /** |
| 782 | * Checks whether a given attribute is defined. |
| 783 | * |
| 784 | * @param key the attribute key |
| 785 | * @return true if the attribute is defined |
| 786 | * @see AttributeSet#isDefined |
| 787 | */ |
| 788 | public boolean isDefined(Object key) { |
| 789 | if (key instanceof StyleConstants) { |
| 790 | Object cssKey = css.styleConstantsKeyToCSSKey |
| 791 | ((StyleConstants)key); |
| 792 | if (cssKey != null) { |
| 793 | return super.isDefined(cssKey); |
| 794 | } |
| 795 | } |
| 796 | return super.isDefined(key); |
| 797 | } |
| 798 | |
| 799 | /** |
| 800 | * Gets the value of an attribute. |
| 801 | * |
| 802 | * @param key the attribute name |
| 803 | * @return the attribute value |
| 804 | * @see AttributeSet#getAttribute |
| 805 | */ |
| 806 | public Object getAttribute(Object key) { |
| 807 | if (key instanceof StyleConstants) { |
| 808 | Object cssKey = css.styleConstantsKeyToCSSKey |
| 809 | ((StyleConstants)key); |
| 810 | if (cssKey != null) { |
| 811 | Object value = super.getAttribute(cssKey); |
| 812 | if (value != null) { |
| 813 | return css.cssValueToStyleConstantsValue |
| 814 | ((StyleConstants)key, value); |
| 815 | } |
| 816 | } |
| 817 | } |
| 818 | return super.getAttribute(key); |
| 819 | } |
| 820 | } |
| 821 | |
| 822 | /** |
| 823 | * Small set of attributes that does conversion of requests |
| 824 | * for attributes of type StyleConstants. |
| 825 | */ |
| 826 | class SmallConversionSet extends SmallAttributeSet { |
| 827 | |
| 828 | /** |
| 829 | * Creates a new attribute set based on a supplied set of attributes. |
| 830 | * |
| 831 | * @param source the set of attributes |
| 832 | */ |
| 833 | public SmallConversionSet(AttributeSet attrs) { |
| 834 | super(attrs); |
| 835 | } |
| 836 | |
| 837 | /** |
| 838 | * Checks whether a given attribute is defined. |
| 839 | * |
| 840 | * @param key the attribute key |
| 841 | * @return true if the attribute is defined |
| 842 | * @see AttributeSet#isDefined |
| 843 | */ |
| 844 | public boolean isDefined(Object key) { |
| 845 | if (key instanceof StyleConstants) { |
| 846 | Object cssKey = css.styleConstantsKeyToCSSKey |
| 847 | ((StyleConstants)key); |
| 848 | if (cssKey != null) { |
| 849 | return super.isDefined(cssKey); |
| 850 | } |
| 851 | } |
| 852 | return super.isDefined(key); |
| 853 | } |
| 854 | |
| 855 | /** |
| 856 | * Gets the value of an attribute. |
| 857 | * |
| 858 | * @param key the attribute name |
| 859 | * @return the attribute value |
| 860 | * @see AttributeSet#getAttribute |
| 861 | */ |
| 862 | public Object getAttribute(Object key) { |
| 863 | if (key instanceof StyleConstants) { |
| 864 | Object cssKey = css.styleConstantsKeyToCSSKey |
| 865 | ((StyleConstants)key); |
| 866 | if (cssKey != null) { |
| 867 | Object value = super.getAttribute(cssKey); |
| 868 | if (value != null) { |
| 869 | return css.cssValueToStyleConstantsValue |
| 870 | ((StyleConstants)key, value); |
| 871 | } |
| 872 | } |
| 873 | } |
| 874 | return super.getAttribute(key); |
| 875 | } |
| 876 | } |
| 877 | |
| 878 | // ---- Resource handling ---------------------------------------- |
| 879 | |
| 880 | /** |
| 881 | * Fetches the font to use for the given set of attributes. |
| 882 | */ |
| 883 | public Font getFont(AttributeSet a) { |
| 884 | return css.getFont(this, a, 12, this); |
| 885 | } |
| 886 | |
| 887 | /** |
| 888 | * Takes a set of attributes and turn it into a foreground color |
| 889 | * specification. This might be used to specify things |
| 890 | * like brighter, more hue, etc. |
| 891 | * |
| 892 | * @param a the set of attributes |
| 893 | * @return the color |
| 894 | */ |
| 895 | public Color getForeground(AttributeSet a) { |
| 896 | Color c = css.getColor(a, CSS.Attribute.COLOR); |
| 897 | if (c == null) { |
| 898 | return Color.black; |
| 899 | } |
| 900 | return c; |
| 901 | } |
| 902 | |
| 903 | /** |
| 904 | * Takes a set of attributes and turn it into a background color |
| 905 | * specification. This might be used to specify things |
| 906 | * like brighter, more hue, etc. |
| 907 | * |
| 908 | * @param a the set of attributes |
| 909 | * @return the color |
| 910 | */ |
| 911 | public Color getBackground(AttributeSet a) { |
| 912 | return css.getColor(a, CSS.Attribute.BACKGROUND_COLOR); |
| 913 | } |
| 914 | |
| 915 | /** |
| 916 | * Fetches the box formatter to use for the given set |
| 917 | * of CSS attributes. |
| 918 | */ |
| 919 | public BoxPainter getBoxPainter(AttributeSet a) { |
| 920 | return new BoxPainter(a, css, this); |
| 921 | } |
| 922 | |
| 923 | /** |
| 924 | * Fetches the list formatter to use for the given set |
| 925 | * of CSS attributes. |
| 926 | */ |
| 927 | public ListPainter getListPainter(AttributeSet a) { |
| 928 | return new ListPainter(a, this); |
| 929 | } |
| 930 | |
| 931 | /** |
| 932 | * Sets the base font size, with valid values between 1 and 7. |
| 933 | */ |
| 934 | public void setBaseFontSize(int sz) { |
| 935 | css.setBaseFontSize(sz); |
| 936 | } |
| 937 | |
| 938 | /** |
| 939 | * Sets the base font size from the passed in String. The string |
| 940 | * can either identify a specific font size, with legal values between |
| 941 | * 1 and 7, or identifiy a relative font size such as +1 or -2. |
| 942 | */ |
| 943 | public void setBaseFontSize(String size) { |
| 944 | css.setBaseFontSize(size); |
| 945 | } |
| 946 | |
| 947 | public static int getIndexOfSize(float pt) { |
| 948 | return CSS.getIndexOfSize(pt, sizeMapDefault); |
| 949 | } |
| 950 | |
| 951 | /** |
| 952 | * Returns the point size, given a size index. |
| 953 | */ |
| 954 | public float getPointSize(int index) { |
| 955 | return css.getPointSize(index, this); |
| 956 | } |
| 957 | |
| 958 | /** |
| 959 | * Given a string such as "+2", "-2", or "2", |
| 960 | * returns a point size value. |
| 961 | */ |
| 962 | public float getPointSize(String size) { |
| 963 | return css.getPointSize(size, this); |
| 964 | } |
| 965 | |
| 966 | /** |
| 967 | * Converts a color string such as "RED" or "#NNNNNN" to a Color. |
| 968 | * Note: This will only convert the HTML3.2 color strings |
| 969 | * or a string of length 7; |
| 970 | * otherwise, it will return null. |
| 971 | */ |
| 972 | public Color stringToColor(String string) { |
| 973 | return CSS.stringToColor(string); |
| 974 | } |
| 975 | |
| 976 | /** |
| 977 | * Returns the ImageIcon to draw in the background for |
| 978 | * <code>attr</code>. |
| 979 | */ |
| 980 | ImageIcon getBackgroundImage(AttributeSet attr) { |
| 981 | Object value = attr.getAttribute(CSS.Attribute.BACKGROUND_IMAGE); |
| 982 | |
| 983 | if (value != null) { |
| 984 | return ((CSS.BackgroundImage)value).getImage(getBase()); |
| 985 | } |
| 986 | return null; |
| 987 | } |
| 988 | |
| 989 | /** |
| 990 | * Adds a rule into the StyleSheet. |
| 991 | * |
| 992 | * @param selector the selector to use for the rule. |
| 993 | * This will be a set of simple selectors, and must |
| 994 | * be a length of 1 or greater. |
| 995 | * @param declaration the set of CSS attributes that |
| 996 | * make up the rule. |
| 997 | */ |
| 998 | void addRule(String[] selector, AttributeSet declaration, |
| 999 | boolean isLinked) { |
| 1000 | int n = selector.length; |
| 1001 | StringBuffer sb = new StringBuffer(); |
| 1002 | sb.append(selector[0]); |
| 1003 | for (int counter = 1; counter < n; counter++) { |
| 1004 | sb.append(' '); |
| 1005 | sb.append(selector[counter]); |
| 1006 | } |
| 1007 | String selectorName = sb.toString(); |
| 1008 | Style rule = getStyle(selectorName); |
| 1009 | if (rule == null) { |
| 1010 | // Notice how the rule is first created, and it not part of |
| 1011 | // the synchronized block. It is done like this as creating |
| 1012 | // a new rule will fire a ChangeEvent. We do not want to be |
| 1013 | // holding the lock when calling to other objects, it can |
| 1014 | // result in deadlock. |
| 1015 | Style altRule = addStyle(selectorName, null); |
| 1016 | synchronized(this) { |
| 1017 | SelectorMapping mapping = getRootSelectorMapping(); |
| 1018 | for (int i = n - 1; i >= 0; i--) { |
| 1019 | mapping = mapping.getChildSelectorMapping |
| 1020 | (selector[i], true); |
| 1021 | } |
| 1022 | rule = mapping.getStyle(); |
| 1023 | if (rule == null) { |
| 1024 | rule = altRule; |
| 1025 | mapping.setStyle(rule); |
| 1026 | refreshResolvedRules(selectorName, selector, rule, |
| 1027 | mapping.getSpecificity()); |
| 1028 | } |
| 1029 | } |
| 1030 | } |
| 1031 | if (isLinked) { |
| 1032 | rule = getLinkedStyle(rule); |
| 1033 | } |
| 1034 | rule.addAttributes(declaration); |
| 1035 | } |
| 1036 | |
| 1037 | // |
| 1038 | // The following gaggle of methods is used in maintaing the rules from |
| 1039 | // the sheet. |
| 1040 | // |
| 1041 | |
| 1042 | /** |
| 1043 | * Updates the attributes of the rules to reference any related |
| 1044 | * rules in <code>ss</code>. |
| 1045 | */ |
| 1046 | private synchronized void linkStyleSheetAt(StyleSheet ss, int index) { |
| 1047 | if (resolvedStyles.size() > 0) { |
| 1048 | Enumeration values = resolvedStyles.elements(); |
| 1049 | while (values.hasMoreElements()) { |
| 1050 | ResolvedStyle rule = (ResolvedStyle)values.nextElement(); |
| 1051 | rule.insertExtendedStyleAt(ss.getRule(rule.getName()), |
| 1052 | index); |
| 1053 | } |
| 1054 | } |
| 1055 | } |
| 1056 | |
| 1057 | /** |
| 1058 | * Removes references to the rules in <code>ss</code>. |
| 1059 | * <code>index</code> gives the index the StyleSheet was at, that is |
| 1060 | * how many StyleSheets had been added before it. |
| 1061 | */ |
| 1062 | private synchronized void unlinkStyleSheet(StyleSheet ss, int index) { |
| 1063 | if (resolvedStyles.size() > 0) { |
| 1064 | Enumeration values = resolvedStyles.elements(); |
| 1065 | while (values.hasMoreElements()) { |
| 1066 | ResolvedStyle rule = (ResolvedStyle)values.nextElement(); |
| 1067 | rule.removeExtendedStyleAt(index); |
| 1068 | } |
| 1069 | } |
| 1070 | } |
| 1071 | |
| 1072 | /** |
| 1073 | * Returns the simple selectors that comprise selector. |
| 1074 | */ |
| 1075 | /* protected */ |
| 1076 | String[] getSimpleSelectors(String selector) { |
| 1077 | selector = cleanSelectorString(selector); |
| 1078 | SearchBuffer sb = SearchBuffer.obtainSearchBuffer(); |
| 1079 | Vector selectors = sb.getVector(); |
| 1080 | int lastIndex = 0; |
| 1081 | int length = selector.length(); |
| 1082 | while (lastIndex != -1) { |
| 1083 | int newIndex = selector.indexOf(' ', lastIndex); |
| 1084 | if (newIndex != -1) { |
| 1085 | selectors.addElement(selector.substring(lastIndex, newIndex)); |
| 1086 | if (++newIndex == length) { |
| 1087 | lastIndex = -1; |
| 1088 | } |
| 1089 | else { |
| 1090 | lastIndex = newIndex; |
| 1091 | } |
| 1092 | } |
| 1093 | else { |
| 1094 | selectors.addElement(selector.substring(lastIndex)); |
| 1095 | lastIndex = -1; |
| 1096 | } |
| 1097 | } |
| 1098 | String[] retValue = new String[selectors.size()]; |
| 1099 | selectors.copyInto(retValue); |
| 1100 | SearchBuffer.releaseSearchBuffer(sb); |
| 1101 | return retValue; |
| 1102 | } |
| 1103 | |
| 1104 | /** |
| 1105 | * Returns a string that only has one space between simple selectors, |
| 1106 | * which may be the passed in String. |
| 1107 | */ |
| 1108 | /*protected*/ String cleanSelectorString(String selector) { |
| 1109 | boolean lastWasSpace = true; |
| 1110 | for (int counter = 0, maxCounter = selector.length(); |
| 1111 | counter < maxCounter; counter++) { |
| 1112 | switch(selector.charAt(counter)) { |
| 1113 | case ' ': |
| 1114 | if (lastWasSpace) { |
| 1115 | return _cleanSelectorString(selector); |
| 1116 | } |
| 1117 | lastWasSpace = true; |
| 1118 | break; |
| 1119 | case '\n': |
| 1120 | case '\r': |
| 1121 | case '\t': |
| 1122 | return _cleanSelectorString(selector); |
| 1123 | default: |
| 1124 | lastWasSpace = false; |
| 1125 | } |
| 1126 | } |
| 1127 | if (lastWasSpace) { |
| 1128 | return _cleanSelectorString(selector); |
| 1129 | } |
| 1130 | // It was fine. |
| 1131 | return selector; |
| 1132 | } |
| 1133 | |
| 1134 | /** |
| 1135 | * Returns a new String that contains only one space between non |
| 1136 | * white space characters. |
| 1137 | */ |
| 1138 | private String _cleanSelectorString(String selector) { |
| 1139 | SearchBuffer sb = SearchBuffer.obtainSearchBuffer(); |
| 1140 | StringBuffer buff = sb.getStringBuffer(); |
| 1141 | boolean lastWasSpace = true; |
| 1142 | int lastIndex = 0; |
| 1143 | char[] chars = selector.toCharArray(); |
| 1144 | int numChars = chars.length; |
| 1145 | String retValue = null; |
| 1146 | try { |
| 1147 | for (int counter = 0; counter < numChars; counter++) { |
| 1148 | switch(chars[counter]) { |
| 1149 | case ' ': |
| 1150 | if (!lastWasSpace) { |
| 1151 | lastWasSpace = true; |
| 1152 | if (lastIndex < counter) { |
| 1153 | buff.append(chars, lastIndex, |
| 1154 | 1 + counter - lastIndex); |
| 1155 | } |
| 1156 | } |
| 1157 | lastIndex = counter + 1; |
| 1158 | break; |
| 1159 | case '\n': |
| 1160 | case '\r': |
| 1161 | case '\t': |
| 1162 | if (!lastWasSpace) { |
| 1163 | lastWasSpace = true; |
| 1164 | if (lastIndex < counter) { |
| 1165 | buff.append(chars, lastIndex, |
| 1166 | counter - lastIndex); |
| 1167 | buff.append(' '); |
| 1168 | } |
| 1169 | } |
| 1170 | lastIndex = counter + 1; |
| 1171 | break; |
| 1172 | default: |
| 1173 | lastWasSpace = false; |
| 1174 | break; |
| 1175 | } |
| 1176 | } |
| 1177 | if (lastWasSpace && buff.length() > 0) { |
| 1178 | // Remove last space. |
| 1179 | buff.setLength(buff.length() - 1); |
| 1180 | } |
| 1181 | else if (lastIndex < numChars) { |
| 1182 | buff.append(chars, lastIndex, numChars - lastIndex); |
| 1183 | } |
| 1184 | retValue = buff.toString(); |
| 1185 | } |
| 1186 | finally { |
| 1187 | SearchBuffer.releaseSearchBuffer(sb); |
| 1188 | } |
| 1189 | return retValue; |
| 1190 | } |
| 1191 | |
| 1192 | /** |
| 1193 | * Returns the root selector mapping that all selectors are relative |
| 1194 | * to. This is an inverted graph of the selectors. |
| 1195 | */ |
| 1196 | private SelectorMapping getRootSelectorMapping() { |
| 1197 | return selectorMapping; |
| 1198 | } |
| 1199 | |
| 1200 | /** |
| 1201 | * Returns the specificity of the passed in String. It assumes the |
| 1202 | * passed in string doesn't contain junk, that is each selector is |
| 1203 | * separated by a space and each selector at most contains one . or one |
| 1204 | * #. A simple selector has a weight of 1, an id selector has a weight |
| 1205 | * of 100, and a class selector has a weight of 10000. |
| 1206 | */ |
| 1207 | /*protected*/ static int getSpecificity(String selector) { |
| 1208 | int specificity = 0; |
| 1209 | boolean lastWasSpace = true; |
| 1210 | |
| 1211 | for (int counter = 0, maxCounter = selector.length(); |
| 1212 | counter < maxCounter; counter++) { |
| 1213 | switch(selector.charAt(counter)) { |
| 1214 | case '.': |
| 1215 | specificity += 100; |
| 1216 | break; |
| 1217 | case '#': |
| 1218 | specificity += 10000; |
| 1219 | break; |
| 1220 | case ' ': |
| 1221 | lastWasSpace = true; |
| 1222 | break; |
| 1223 | default: |
| 1224 | if (lastWasSpace) { |
| 1225 | lastWasSpace = false; |
| 1226 | specificity += 1; |
| 1227 | } |
| 1228 | } |
| 1229 | } |
| 1230 | return specificity; |
| 1231 | } |
| 1232 | |
| 1233 | /** |
| 1234 | * Returns the style that linked attributes should be added to. This |
| 1235 | * will create the style if necessary. |
| 1236 | */ |
| 1237 | private Style getLinkedStyle(Style localStyle) { |
| 1238 | // NOTE: This is not synchronized, and the caller of this does |
| 1239 | // not synchronize. There is the chance for one of the callers to |
| 1240 | // overwrite the existing resolved parent, but it is quite rare. |
| 1241 | // The reason this is left like this is because setResolveParent |
| 1242 | // will fire a ChangeEvent. It is really, REALLY bad for us to |
| 1243 | // hold a lock when calling outside of us, it may cause a deadlock. |
| 1244 | Style retStyle = (Style)localStyle.getResolveParent(); |
| 1245 | if (retStyle == null) { |
| 1246 | retStyle = addStyle(null, null); |
| 1247 | localStyle.setResolveParent(retStyle); |
| 1248 | } |
| 1249 | return retStyle; |
| 1250 | } |
| 1251 | |
| 1252 | /** |
| 1253 | * Returns the resolved style for <code>selector</code>. This will |
| 1254 | * create the resolved style, if necessary. |
| 1255 | */ |
| 1256 | private synchronized Style getResolvedStyle(String selector, |
| 1257 | Vector elements, |
| 1258 | HTML.Tag t) { |
| 1259 | Style retStyle = (Style)resolvedStyles.get(selector); |
| 1260 | if (retStyle == null) { |
| 1261 | retStyle = createResolvedStyle(selector, elements, t); |
| 1262 | } |
| 1263 | return retStyle; |
| 1264 | } |
| 1265 | |
| 1266 | /** |
| 1267 | * Returns the resolved style for <code>selector</code>. This will |
| 1268 | * create the resolved style, if necessary. |
| 1269 | */ |
| 1270 | private synchronized Style getResolvedStyle(String selector) { |
| 1271 | Style retStyle = (Style)resolvedStyles.get(selector); |
| 1272 | if (retStyle == null) { |
| 1273 | retStyle = createResolvedStyle(selector); |
| 1274 | } |
| 1275 | return retStyle; |
| 1276 | } |
| 1277 | |
| 1278 | /** |
| 1279 | * Adds <code>mapping</code> to <code>elements</code>. It is added |
| 1280 | * such that <code>elements</code> will remain ordered by |
| 1281 | * specificity. |
| 1282 | */ |
| 1283 | private void addSortedStyle(SelectorMapping mapping, Vector elements) { |
| 1284 | int size = elements.size(); |
| 1285 | |
| 1286 | if (size > 0) { |
| 1287 | int specificity = mapping.getSpecificity(); |
| 1288 | |
| 1289 | for (int counter = 0; counter < size; counter++) { |
| 1290 | if (specificity >= ((SelectorMapping)elements.elementAt |
| 1291 | (counter)).getSpecificity()) { |
| 1292 | elements.insertElementAt(mapping, counter); |
| 1293 | return; |
| 1294 | } |
| 1295 | } |
| 1296 | } |
| 1297 | elements.addElement(mapping); |
| 1298 | } |
| 1299 | |
| 1300 | /** |
| 1301 | * Adds <code>parentMapping</code> to <code>styles</code>, and |
| 1302 | * recursively calls this method if <code>parentMapping</code> has |
| 1303 | * any child mappings for any of the Elements in <code>elements</code>. |
| 1304 | */ |
| 1305 | private synchronized void getStyles(SelectorMapping parentMapping, |
| 1306 | Vector styles, |
| 1307 | String[] tags, String[] ids, String[] classes, |
| 1308 | int index, int numElements, |
| 1309 | Hashtable alreadyChecked) { |
| 1310 | // Avoid desending the same mapping twice. |
| 1311 | if (alreadyChecked.contains(parentMapping)) { |
| 1312 | return; |
| 1313 | } |
| 1314 | alreadyChecked.put(parentMapping, parentMapping); |
| 1315 | Style style = parentMapping.getStyle(); |
| 1316 | if (style != null) { |
| 1317 | addSortedStyle(parentMapping, styles); |
| 1318 | } |
| 1319 | for (int counter = index; counter < numElements; counter++) { |
| 1320 | String tagString = tags[counter]; |
| 1321 | if (tagString != null) { |
| 1322 | SelectorMapping childMapping = parentMapping. |
| 1323 | getChildSelectorMapping(tagString, false); |
| 1324 | if (childMapping != null) { |
| 1325 | getStyles(childMapping, styles, tags, ids, classes, |
| 1326 | counter + 1, numElements, alreadyChecked); |
| 1327 | } |
| 1328 | if (classes[counter] != null) { |
| 1329 | String className = classes[counter]; |
| 1330 | childMapping = parentMapping.getChildSelectorMapping( |
| 1331 | tagString + "." + className, false); |
| 1332 | if (childMapping != null) { |
| 1333 | getStyles(childMapping, styles, tags, ids, classes, |
| 1334 | counter + 1, numElements, alreadyChecked); |
| 1335 | } |
| 1336 | childMapping = parentMapping.getChildSelectorMapping( |
| 1337 | "." + className, false); |
| 1338 | if (childMapping != null) { |
| 1339 | getStyles(childMapping, styles, tags, ids, classes, |
| 1340 | counter + 1, numElements, alreadyChecked); |
| 1341 | } |
| 1342 | } |
| 1343 | if (ids[counter] != null) { |
| 1344 | String idName = ids[counter]; |
| 1345 | childMapping = parentMapping.getChildSelectorMapping( |
| 1346 | tagString + "#" + idName, false); |
| 1347 | if (childMapping != null) { |
| 1348 | getStyles(childMapping, styles, tags, ids, classes, |
| 1349 | counter + 1, numElements, alreadyChecked); |
| 1350 | } |
| 1351 | childMapping = parentMapping.getChildSelectorMapping( |
| 1352 | "#" + idName, false); |
| 1353 | if (childMapping != null) { |
| 1354 | getStyles(childMapping, styles, tags, ids, classes, |
| 1355 | counter + 1, numElements, alreadyChecked); |
| 1356 | } |
| 1357 | } |
| 1358 | } |
| 1359 | } |
| 1360 | } |
| 1361 | |
| 1362 | /** |
| 1363 | * Creates and returns a Style containing all the rules that match |
| 1364 | * <code>selector</code>. |
| 1365 | */ |
| 1366 | private synchronized Style createResolvedStyle(String selector, |
| 1367 | String[] tags, |
| 1368 | String[] ids, String[] classes) { |
| 1369 | SearchBuffer sb = SearchBuffer.obtainSearchBuffer(); |
| 1370 | Vector tempVector = sb.getVector(); |
| 1371 | Hashtable tempHashtable = sb.getHashtable(); |
| 1372 | // Determine all the Styles that are appropriate, placing them |
| 1373 | // in tempVector |
| 1374 | try { |
| 1375 | SelectorMapping mapping = getRootSelectorMapping(); |
| 1376 | int numElements = tags.length; |
| 1377 | String tagString = tags[0]; |
| 1378 | SelectorMapping childMapping = mapping.getChildSelectorMapping( |
| 1379 | tagString, false); |
| 1380 | if (childMapping != null) { |
| 1381 | getStyles(childMapping, tempVector, tags, ids, classes, 1, |
| 1382 | numElements, tempHashtable); |
| 1383 | } |
| 1384 | if (classes[0] != null) { |
| 1385 | String className = classes[0]; |
| 1386 | childMapping = mapping.getChildSelectorMapping( |
| 1387 | tagString + "." + className, false); |
| 1388 | if (childMapping != null) { |
| 1389 | getStyles(childMapping, tempVector, tags, ids, classes, 1, |
| 1390 | numElements, tempHashtable); |
| 1391 | } |
| 1392 | childMapping = mapping.getChildSelectorMapping( |
| 1393 | "." + className, false); |
| 1394 | if (childMapping != null) { |
| 1395 | getStyles(childMapping, tempVector, tags, ids, classes, |
| 1396 | 1, numElements, tempHashtable); |
| 1397 | } |
| 1398 | } |
| 1399 | if (ids[0] != null) { |
| 1400 | String idName = ids[0]; |
| 1401 | childMapping = mapping.getChildSelectorMapping( |
| 1402 | tagString + "#" + idName, false); |
| 1403 | if (childMapping != null) { |
| 1404 | getStyles(childMapping, tempVector, tags, ids, classes, |
| 1405 | 1, numElements, tempHashtable); |
| 1406 | } |
| 1407 | childMapping = mapping.getChildSelectorMapping( |
| 1408 | "#" + idName, false); |
| 1409 | if (childMapping != null) { |
| 1410 | getStyles(childMapping, tempVector, tags, ids, classes, |
| 1411 | 1, numElements, tempHashtable); |
| 1412 | } |
| 1413 | } |
| 1414 | // Create a new Style that will delegate to all the matching |
| 1415 | // Styles. |
| 1416 | int numLinkedSS = (linkedStyleSheets != null) ? |
| 1417 | linkedStyleSheets.size() : 0; |
| 1418 | int numStyles = tempVector.size(); |
| 1419 | AttributeSet[] attrs = new AttributeSet[numStyles + numLinkedSS]; |
| 1420 | for (int counter = 0; counter < numStyles; counter++) { |
| 1421 | attrs[counter] = ((SelectorMapping)tempVector. |
| 1422 | elementAt(counter)).getStyle(); |
| 1423 | } |
| 1424 | // Get the AttributeSet from linked style sheets. |
| 1425 | for (int counter = 0; counter < numLinkedSS; counter++) { |
| 1426 | AttributeSet attr = ((StyleSheet)linkedStyleSheets. |
| 1427 | elementAt(counter)).getRule(selector); |
| 1428 | if (attr == null) { |
| 1429 | attrs[counter + numStyles] = SimpleAttributeSet.EMPTY; |
| 1430 | } |
| 1431 | else { |
| 1432 | attrs[counter + numStyles] = attr; |
| 1433 | } |
| 1434 | } |
| 1435 | ResolvedStyle retStyle = new ResolvedStyle(selector, attrs, |
| 1436 | numStyles); |
| 1437 | resolvedStyles.put(selector, retStyle); |
| 1438 | return retStyle; |
| 1439 | } |
| 1440 | finally { |
| 1441 | SearchBuffer.releaseSearchBuffer(sb); |
| 1442 | } |
| 1443 | } |
| 1444 | |
| 1445 | /** |
| 1446 | * Creates and returns a Style containing all the rules that |
| 1447 | * matches <code>selector</code>. |
| 1448 | * |
| 1449 | * @param elements a Vector of all the Elements |
| 1450 | * the style is being asked for. The |
| 1451 | * first Element is the deepest Element, with the last Element |
| 1452 | * representing the root. |
| 1453 | * @param t the Tag to use for |
| 1454 | * the first Element in <code>elements</code> |
| 1455 | */ |
| 1456 | private Style createResolvedStyle(String selector, Vector elements, |
| 1457 | HTML.Tag t) { |
| 1458 | int numElements = elements.size(); |
| 1459 | // Build three arrays, one for tags, one for class's, and one for |
| 1460 | // id's |
| 1461 | String tags[] = new String[numElements]; |
| 1462 | String ids[] = new String[numElements]; |
| 1463 | String classes[] = new String[numElements]; |
| 1464 | for (int counter = 0; counter < numElements; counter++) { |
| 1465 | Element e = (Element)elements.elementAt(counter); |
| 1466 | AttributeSet attr = e.getAttributes(); |
| 1467 | if (counter == 0 && e.isLeaf()) { |
| 1468 | // For leafs, we use the second tier attributes. |
| 1469 | Object testAttr = attr.getAttribute(t); |
| 1470 | if (testAttr instanceof AttributeSet) { |
| 1471 | attr = (AttributeSet)testAttr; |
| 1472 | } |
| 1473 | else { |
| 1474 | attr = null; |
| 1475 | } |
| 1476 | } |
| 1477 | if (attr != null) { |
| 1478 | HTML.Tag tag = (HTML.Tag)attr.getAttribute(StyleConstants. |
| 1479 | NameAttribute); |
| 1480 | if (tag != null) { |
| 1481 | tags[counter] = tag.toString(); |
| 1482 | } |
| 1483 | else { |
| 1484 | tags[counter] = null; |
| 1485 | } |
| 1486 | if (attr.isDefined(HTML.Attribute.CLASS)) { |
| 1487 | classes[counter] = attr.getAttribute |
| 1488 | (HTML.Attribute.CLASS).toString(); |
| 1489 | } |
| 1490 | else { |
| 1491 | classes[counter] = null; |
| 1492 | } |
| 1493 | if (attr.isDefined(HTML.Attribute.ID)) { |
| 1494 | ids[counter] = attr.getAttribute(HTML.Attribute.ID). |
| 1495 | toString(); |
| 1496 | } |
| 1497 | else { |
| 1498 | ids[counter] = null; |
| 1499 | } |
| 1500 | } |
| 1501 | else { |
| 1502 | tags[counter] = ids[counter] = classes[counter] = null; |
| 1503 | } |
| 1504 | } |
| 1505 | tags[0] = t.toString(); |
| 1506 | return createResolvedStyle(selector, tags, ids, classes); |
| 1507 | } |
| 1508 | |
| 1509 | /** |
| 1510 | * Creates and returns a Style containing all the rules that match |
| 1511 | * <code>selector</code>. It is assumed that each simple selector |
| 1512 | * in <code>selector</code> is separated by a space. |
| 1513 | */ |
| 1514 | private Style createResolvedStyle(String selector) { |
| 1515 | SearchBuffer sb = SearchBuffer.obtainSearchBuffer(); |
| 1516 | // Will contain the tags, ids, and classes, in that order. |
| 1517 | Vector elements = sb.getVector(); |
| 1518 | try { |
| 1519 | boolean done; |
| 1520 | int dotIndex = 0; |
| 1521 | int spaceIndex = 0; |
| 1522 | int poundIndex = 0; |
| 1523 | int lastIndex = 0; |
| 1524 | int length = selector.length(); |
| 1525 | while (lastIndex < length) { |
| 1526 | if (dotIndex == lastIndex) { |
| 1527 | dotIndex = selector.indexOf('.', lastIndex); |
| 1528 | } |
| 1529 | if (poundIndex == lastIndex) { |
| 1530 | poundIndex = selector.indexOf('#', lastIndex); |
| 1531 | } |
| 1532 | spaceIndex = selector.indexOf(' ', lastIndex); |
| 1533 | if (spaceIndex == -1) { |
| 1534 | spaceIndex = length; |
| 1535 | } |
| 1536 | if (dotIndex != -1 && poundIndex != -1 && |
| 1537 | dotIndex < spaceIndex && poundIndex < spaceIndex) { |
| 1538 | if (poundIndex < dotIndex) { |
| 1539 | // #. |
| 1540 | if (lastIndex == poundIndex) { |
| 1541 | elements.addElement(""); |
| 1542 | } |
| 1543 | else { |
| 1544 | elements.addElement(selector.substring(lastIndex, |
| 1545 | poundIndex)); |
| 1546 | } |
| 1547 | if ((dotIndex + 1) < spaceIndex) { |
| 1548 | elements.addElement(selector.substring |
| 1549 | (dotIndex + 1, spaceIndex)); |
| 1550 | } |
| 1551 | else { |
| 1552 | elements.addElement(null); |
| 1553 | } |
| 1554 | if ((poundIndex + 1) == dotIndex) { |
| 1555 | elements.addElement(null); |
| 1556 | } |
| 1557 | else { |
| 1558 | elements.addElement(selector.substring |
| 1559 | (poundIndex + 1, dotIndex)); |
| 1560 | } |
| 1561 | } |
| 1562 | else if(poundIndex < spaceIndex) { |
| 1563 | // .# |
| 1564 | if (lastIndex == dotIndex) { |
| 1565 | elements.addElement(""); |
| 1566 | } |
| 1567 | else { |
| 1568 | elements.addElement(selector.substring(lastIndex, |
| 1569 | dotIndex)); |
| 1570 | } |
| 1571 | if ((dotIndex + 1) < poundIndex) { |
| 1572 | elements.addElement(selector.substring |
| 1573 | (dotIndex + 1, poundIndex)); |
| 1574 | } |
| 1575 | else { |
| 1576 | elements.addElement(null); |
| 1577 | } |
| 1578 | if ((poundIndex + 1) == spaceIndex) { |
| 1579 | elements.addElement(null); |
| 1580 | } |
| 1581 | else { |
| 1582 | elements.addElement(selector.substring |
| 1583 | (poundIndex + 1, spaceIndex)); |
| 1584 | } |
| 1585 | } |
| 1586 | dotIndex = poundIndex = spaceIndex + 1; |
| 1587 | } |
| 1588 | else if (dotIndex != -1 && dotIndex < spaceIndex) { |
| 1589 | // . |
| 1590 | if (dotIndex == lastIndex) { |
| 1591 | elements.addElement(""); |
| 1592 | } |
| 1593 | else { |
| 1594 | elements.addElement(selector.substring(lastIndex, |
| 1595 | dotIndex)); |
| 1596 | } |
| 1597 | if ((dotIndex + 1) == spaceIndex) { |
| 1598 | elements.addElement(null); |
| 1599 | } |
| 1600 | else { |
| 1601 | elements.addElement(selector.substring(dotIndex + 1, |
| 1602 | spaceIndex)); |
| 1603 | } |
| 1604 | elements.addElement(null); |
| 1605 | dotIndex = spaceIndex + 1; |
| 1606 | } |
| 1607 | else if (poundIndex != -1 && poundIndex < spaceIndex) { |
| 1608 | // # |
| 1609 | if (poundIndex == lastIndex) { |
| 1610 | elements.addElement(""); |
| 1611 | } |
| 1612 | else { |
| 1613 | elements.addElement(selector.substring(lastIndex, |
| 1614 | poundIndex)); |
| 1615 | } |
| 1616 | elements.addElement(null); |
| 1617 | if ((poundIndex + 1) == spaceIndex) { |
| 1618 | elements.addElement(null); |
| 1619 | } |
| 1620 | else { |
| 1621 | elements.addElement(selector.substring(poundIndex + 1, |
| 1622 | spaceIndex)); |
| 1623 | } |
| 1624 | poundIndex = spaceIndex + 1; |
| 1625 | } |
| 1626 | else { |
| 1627 | // id |
| 1628 | elements.addElement(selector.substring(lastIndex, |
| 1629 | spaceIndex)); |
| 1630 | elements.addElement(null); |
| 1631 | elements.addElement(null); |
| 1632 | } |
| 1633 | lastIndex = spaceIndex + 1; |
| 1634 | } |
| 1635 | // Create the tag, id, and class arrays. |
| 1636 | int total = elements.size(); |
| 1637 | int numTags = total / 3; |
| 1638 | String[] tags = new String[numTags]; |
| 1639 | String[] ids = new String[numTags]; |
| 1640 | String[] classes = new String[numTags]; |
| 1641 | for (int index = 0, eIndex = total - 3; index < numTags; |
| 1642 | index++, eIndex -= 3) { |
| 1643 | tags[index] = (String)elements.elementAt(eIndex); |
| 1644 | classes[index] = (String)elements.elementAt(eIndex + 1); |
| 1645 | ids[index] = (String)elements.elementAt(eIndex + 2); |
| 1646 | } |
| 1647 | return createResolvedStyle(selector, tags, ids, classes); |
| 1648 | } |
| 1649 | finally { |
| 1650 | SearchBuffer.releaseSearchBuffer(sb); |
| 1651 | } |
| 1652 | } |
| 1653 | |
| 1654 | /** |
| 1655 | * Should be invoked when a new rule is added that did not previously |
| 1656 | * exist. Goes through and refreshes the necessary resolved |
| 1657 | * rules. |
| 1658 | */ |
| 1659 | private synchronized void refreshResolvedRules(String selectorName, |
| 1660 | String[] selector, |
| 1661 | Style newStyle, |
| 1662 | int specificity) { |
| 1663 | if (resolvedStyles.size() > 0) { |
| 1664 | Enumeration values = resolvedStyles.elements(); |
| 1665 | while (values.hasMoreElements()) { |
| 1666 | ResolvedStyle style = (ResolvedStyle)values.nextElement(); |
| 1667 | if (style.matches(selectorName)) { |
| 1668 | style.insertStyle(newStyle, specificity); |
| 1669 | } |
| 1670 | } |
| 1671 | } |
| 1672 | } |
| 1673 | |
| 1674 | |
| 1675 | /** |
| 1676 | * A temporary class used to hold a Vector, a StringBuffer and a |
| 1677 | * Hashtable. This is used to avoid allocing a lot of garbage when |
| 1678 | * searching for rules. Use the static method obtainSearchBuffer and |
| 1679 | * releaseSearchBuffer to get a SearchBuffer, and release it when |
| 1680 | * done. |
| 1681 | */ |
| 1682 | private static class SearchBuffer { |
| 1683 | /** A stack containing instances of SearchBuffer. Used in getting |
| 1684 | * rules. */ |
| 1685 | static Stack searchBuffers = new Stack(); |
| 1686 | // A set of temporary variables that can be used in whatever way. |
| 1687 | Vector vector = null; |
| 1688 | StringBuffer stringBuffer = null; |
| 1689 | Hashtable hashtable = null; |
| 1690 | |
| 1691 | /** |
| 1692 | * Returns an instance of SearchBuffer. Be sure and issue |
| 1693 | * a releaseSearchBuffer when done with it. |
| 1694 | */ |
| 1695 | static SearchBuffer obtainSearchBuffer() { |
| 1696 | SearchBuffer sb; |
| 1697 | try { |
| 1698 | if(!searchBuffers.empty()) { |
| 1699 | sb = (SearchBuffer)searchBuffers.pop(); |
| 1700 | } else { |
| 1701 | sb = new SearchBuffer(); |
| 1702 | } |
| 1703 | } catch (EmptyStackException ese) { |
| 1704 | sb = new SearchBuffer(); |
| 1705 | } |
| 1706 | return sb; |
| 1707 | } |
| 1708 | |
| 1709 | /** |
| 1710 | * Adds <code>sb</code> to the stack of SearchBuffers that can |
| 1711 | * be used. |
| 1712 | */ |
| 1713 | static void releaseSearchBuffer(SearchBuffer sb) { |
| 1714 | sb.empty(); |
| 1715 | searchBuffers.push(sb); |
| 1716 | } |
| 1717 | |
| 1718 | StringBuffer getStringBuffer() { |
| 1719 | if (stringBuffer == null) { |
| 1720 | stringBuffer = new StringBuffer(); |
| 1721 | } |
| 1722 | return stringBuffer; |
| 1723 | } |
| 1724 | |
| 1725 | Vector getVector() { |
| 1726 | if (vector == null) { |
| 1727 | vector = new Vector(); |
| 1728 | } |
| 1729 | return vector; |
| 1730 | } |
| 1731 | |
| 1732 | Hashtable getHashtable() { |
| 1733 | if (hashtable == null) { |
| 1734 | hashtable = new Hashtable(); |
| 1735 | } |
| 1736 | return hashtable; |
| 1737 | } |
| 1738 | |
| 1739 | void empty() { |
| 1740 | if (stringBuffer != null) { |
| 1741 | stringBuffer.setLength(0); |
| 1742 | } |
| 1743 | if (vector != null) { |
| 1744 | vector.removeAllElements(); |
| 1745 | } |
| 1746 | if (hashtable != null) { |
| 1747 | hashtable.clear(); |
| 1748 | } |
| 1749 | } |
| 1750 | } |
| 1751 | |
| 1752 | |
| 1753 | static final Border noBorder = new EmptyBorder(0,0,0,0); |
| 1754 | |
| 1755 | /** |
| 1756 | * Class to carry out some of the duties of |
| 1757 | * CSS formatting. Implementations of this |
| 1758 | * class enable views to present the CSS formatting |
| 1759 | * while not knowing anything about how the CSS values |
| 1760 | * are being cached. |
| 1761 | * <p> |
| 1762 | * As a delegate of Views, this object is responsible for |
| 1763 | * the insets of a View and making sure the background |
| 1764 | * is maintained according to the CSS attributes. |
| 1765 | */ |
| 1766 | public static class BoxPainter implements Serializable { |
| 1767 | |
| 1768 | BoxPainter(AttributeSet a, CSS css, StyleSheet ss) { |
| 1769 | this.ss = ss; |
| 1770 | this.css = css; |
| 1771 | border = getBorder(a); |
| 1772 | binsets = border.getBorderInsets(null); |
| 1773 | topMargin = getLength(CSS.Attribute.MARGIN_TOP, a); |
| 1774 | bottomMargin = getLength(CSS.Attribute.MARGIN_BOTTOM, a); |
| 1775 | leftMargin = getLength(CSS.Attribute.MARGIN_LEFT, a); |
| 1776 | rightMargin = getLength(CSS.Attribute.MARGIN_RIGHT, a); |
| 1777 | bg = ss.getBackground(a); |
| 1778 | if (ss.getBackgroundImage(a) != null) { |
| 1779 | bgPainter = new BackgroundImagePainter(a, css, ss); |
| 1780 | } |
| 1781 | } |
| 1782 | |
| 1783 | /** |
| 1784 | * Fetches a border to render for the given attributes. |
| 1785 | * PENDING(prinz) This is pretty badly hacked at the |
| 1786 | * moment. |
| 1787 | */ |
| 1788 | Border getBorder(AttributeSet a) { |
| 1789 | return new CSSBorder(a); |
| 1790 | } |
| 1791 | |
| 1792 | /** |
| 1793 | * Fetches the color to use for borders. This will either be |
| 1794 | * the value specified by the border-color attribute (which |
| 1795 | * is not inherited), or it will default to the color attribute |
| 1796 | * (which is inherited). |
| 1797 | */ |
| 1798 | Color getBorderColor(AttributeSet a) { |
| 1799 | Color color = css.getColor(a, CSS.Attribute.BORDER_COLOR); |
| 1800 | if (color == null) { |
| 1801 | color = css.getColor(a, CSS.Attribute.COLOR); |
| 1802 | if (color == null) { |
| 1803 | return Color.black; |
| 1804 | } |
| 1805 | } |
| 1806 | return color; |
| 1807 | } |
| 1808 | |
| 1809 | /** |
| 1810 | * Fetches the inset needed on a given side to |
| 1811 | * account for the margin, border, and padding. |
| 1812 | * |
| 1813 | * @param side The size of the box to fetch the |
| 1814 | * inset for. This can be View.TOP, |
| 1815 | * View.LEFT, View.BOTTOM, or View.RIGHT. |
| 1816 | * @param v the view making the request. This is |
| 1817 | * used to get the AttributeSet, and may be used to |
| 1818 | * resolve percentage arguments. |
| 1819 | * @exception IllegalArgumentException for an invalid direction |
| 1820 | */ |
| 1821 | public float getInset(int side, View v) { |
| 1822 | AttributeSet a = v.getAttributes(); |
| 1823 | float inset = 0; |
| 1824 | switch(side) { |
| 1825 | case View.LEFT: |
| 1826 | inset += getOrientationMargin(HorizontalMargin.LEFT, |
| 1827 | leftMargin, a, isLeftToRight(v)); |
| 1828 | inset += binsets.left; |
| 1829 | inset += getLength(CSS.Attribute.PADDING_LEFT, a); |
| 1830 | break; |
| 1831 | case View.RIGHT: |
| 1832 | inset += getOrientationMargin(HorizontalMargin.RIGHT, |
| 1833 | rightMargin, a, isLeftToRight(v)); |
| 1834 | inset += binsets.right; |
| 1835 | inset += getLength(CSS.Attribute.PADDING_RIGHT, a); |
| 1836 | break; |
| 1837 | case View.TOP: |
| 1838 | inset += topMargin; |
| 1839 | inset += binsets.top; |
| 1840 | inset += getLength(CSS.Attribute.PADDING_TOP, a); |
| 1841 | break; |
| 1842 | case View.BOTTOM: |
| 1843 | inset += bottomMargin; |
| 1844 | inset += binsets.bottom; |
| 1845 | inset += getLength(CSS.Attribute.PADDING_BOTTOM, a); |
| 1846 | break; |
| 1847 | default: |
| 1848 | throw new IllegalArgumentException("Invalid side: " + side); |
| 1849 | } |
| 1850 | return inset; |
| 1851 | } |
| 1852 | |
| 1853 | /** |
| 1854 | * Paints the CSS box according to the attributes |
| 1855 | * given. This should paint the border, padding, |
| 1856 | * and background. |
| 1857 | * |
| 1858 | * @param g the rendering surface. |
| 1859 | * @param x the x coordinate of the allocated area to |
| 1860 | * render into. |
| 1861 | * @param y the y coordinate of the allocated area to |
| 1862 | * render into. |
| 1863 | * @param w the width of the allocated area to render into. |
| 1864 | * @param h the height of the allocated area to render into. |
| 1865 | * @param v the view making the request. This is |
| 1866 | * used to get the AttributeSet, and may be used to |
| 1867 | * resolve percentage arguments. |
| 1868 | */ |
| 1869 | public void paint(Graphics g, float x, float y, float w, float h, View v) { |
| 1870 | // PENDING(prinz) implement real rendering... which would |
| 1871 | // do full set of border and background capabilities. |
| 1872 | // remove margin |
| 1873 | |
| 1874 | float dx = 0; |
| 1875 | float dy = 0; |
| 1876 | float dw = 0; |
| 1877 | float dh = 0; |
| 1878 | AttributeSet a = v.getAttributes(); |
| 1879 | boolean isLeftToRight = isLeftToRight(v); |
| 1880 | float localLeftMargin = getOrientationMargin(HorizontalMargin.LEFT, |
| 1881 | leftMargin, |
| 1882 | a, isLeftToRight); |
| 1883 | float localRightMargin = getOrientationMargin(HorizontalMargin.RIGHT, |
| 1884 | rightMargin, |
| 1885 | a, isLeftToRight); |
| 1886 | if (!(v instanceof HTMLEditorKit.HTMLFactory.BodyBlockView)) { |
| 1887 | dx = localLeftMargin; |
| 1888 | dy = topMargin; |
| 1889 | dw = -(localLeftMargin + localRightMargin); |
| 1890 | dh = -(topMargin + bottomMargin); |
| 1891 | } |
| 1892 | if (bg != null) { |
| 1893 | g.setColor(bg); |
| 1894 | g.fillRect((int) (x + dx), |
| 1895 | (int) (y + dy), |
| 1896 | (int) (w + dw), |
| 1897 | (int) (h + dh)); |
| 1898 | } |
| 1899 | if (bgPainter != null) { |
| 1900 | bgPainter.paint(g, x + dx, y + dy, w + dw, h + dh, v); |
| 1901 | } |
| 1902 | x += localLeftMargin; |
| 1903 | y += topMargin; |
| 1904 | w -= localLeftMargin + localRightMargin; |
| 1905 | h -= topMargin + bottomMargin; |
| 1906 | if (border instanceof BevelBorder) { |
| 1907 | //BevelBorder does not support border width |
| 1908 | int bw = (int) getLength(CSS.Attribute.BORDER_TOP_WIDTH, a); |
| 1909 | for (int i = bw - 1; i >= 0; i--) { |
| 1910 | border.paintBorder(null, g, (int) x + i, (int) y + i, |
| 1911 | (int) w - 2 * i, (int) h - 2 * i); |
| 1912 | } |
| 1913 | } else { |
| 1914 | border.paintBorder(null, g, (int) x, (int) y, (int) w, (int) h); |
| 1915 | } |
| 1916 | } |
| 1917 | |
| 1918 | float getLength(CSS.Attribute key, AttributeSet a) { |
| 1919 | return css.getLength(a, key, ss); |
| 1920 | } |
| 1921 | |
| 1922 | static boolean isLeftToRight(View v) { |
| 1923 | boolean ret = true; |
| 1924 | if (isOrientationAware(v)) { |
| 1925 | Container container = null; |
| 1926 | if (v != null && (container = v.getContainer()) != null) { |
| 1927 | ret = container.getComponentOrientation().isLeftToRight(); |
| 1928 | } |
| 1929 | } |
| 1930 | return ret; |
| 1931 | } |
| 1932 | |
| 1933 | /* |
| 1934 | * only certain tags are concerned about orientation |
| 1935 | * <dir>, <menu>, <ul>, <ol> |
| 1936 | * for all others we return true. It is implemented this way |
| 1937 | * for performance purposes |
| 1938 | */ |
| 1939 | static boolean isOrientationAware(View v) { |
| 1940 | boolean ret = false; |
| 1941 | AttributeSet attr = null; |
| 1942 | Object obj = null; |
| 1943 | if (v != null |
| 1944 | && (attr = v.getElement().getAttributes()) != null |
| 1945 | && (obj = attr.getAttribute(StyleConstants.NameAttribute)) instanceof HTML.Tag |
| 1946 | && (obj == HTML.Tag.DIR |
| 1947 | || obj == HTML.Tag.MENU |
| 1948 | || obj == HTML.Tag.UL |
| 1949 | || obj == HTML.Tag.OL)) { |
| 1950 | ret = true; |
| 1951 | } |
| 1952 | |
| 1953 | return ret; |
| 1954 | } |
| 1955 | |
| 1956 | static enum HorizontalMargin { LEFT, RIGHT }; |
| 1957 | |
| 1958 | /** |
| 1959 | * for <dir>, <menu>, <ul> etc. |
| 1960 | * margins are Left-To-Right/Right-To-Left depended. |
| 1961 | * see 5088268 for more details |
| 1962 | * margin-(left|right)-(ltr|rtl) were introduced to describe it |
| 1963 | * if margin-(left|right) is present we are to use it. |
| 1964 | * |
| 1965 | * @param side The horizontal side to fetch margin for |
| 1966 | * This can be HorizontalMargin.LEFT or HorizontalMargin.RIGHT |
| 1967 | * @param cssMargin margin from css |
| 1968 | * @param a AttributeSet for the View we getting margin for |
| 1969 | * @param isLeftToRight |
| 1970 | * @return orientation depended margin |
| 1971 | */ |
| 1972 | float getOrientationMargin(HorizontalMargin side, float cssMargin, |
| 1973 | AttributeSet a, boolean isLeftToRight) { |
| 1974 | float margin = cssMargin; |
| 1975 | float orientationMargin = cssMargin; |
| 1976 | Object cssMarginValue = null; |
| 1977 | switch (side) { |
| 1978 | case RIGHT: |
| 1979 | { |
| 1980 | orientationMargin = (isLeftToRight) ? |
| 1981 | getLength(CSS.Attribute.MARGIN_RIGHT_LTR, a) : |
| 1982 | getLength(CSS.Attribute.MARGIN_RIGHT_RTL, a); |
| 1983 | cssMarginValue = a.getAttribute(CSS.Attribute.MARGIN_RIGHT); |
| 1984 | } |
| 1985 | break; |
| 1986 | case LEFT : |
| 1987 | { |
| 1988 | orientationMargin = (isLeftToRight) ? |
| 1989 | getLength(CSS.Attribute.MARGIN_LEFT_LTR, a) : |
| 1990 | getLength(CSS.Attribute.MARGIN_LEFT_RTL, a); |
| 1991 | cssMarginValue = a.getAttribute(CSS.Attribute.MARGIN_LEFT); |
| 1992 | } |
| 1993 | break; |
| 1994 | } |
| 1995 | |
| 1996 | if (cssMarginValue == null |
| 1997 | && orientationMargin != Integer.MIN_VALUE) { |
| 1998 | margin = orientationMargin; |
| 1999 | } |
| 2000 | return margin; |
| 2001 | } |
| 2002 | |
| 2003 | float topMargin; |
| 2004 | float bottomMargin; |
| 2005 | float leftMargin; |
| 2006 | float rightMargin; |
| 2007 | // Bitmask, used to indicate what margins are relative: |
| 2008 | // bit 0 for top, 1 for bottom, 2 for left and 3 for right. |
| 2009 | short marginFlags; |
| 2010 | Border border; |
| 2011 | Insets binsets; |
| 2012 | CSS css; |
| 2013 | StyleSheet ss; |
| 2014 | Color bg; |
| 2015 | BackgroundImagePainter bgPainter; |
| 2016 | } |
| 2017 | |
| 2018 | /** |
| 2019 | * Class to carry out some of the duties of CSS list |
| 2020 | * formatting. Implementations of this |
| 2021 | * class enable views to present the CSS formatting |
| 2022 | * while not knowing anything about how the CSS values |
| 2023 | * are being cached. |
| 2024 | */ |
| 2025 | public static class ListPainter implements Serializable { |
| 2026 | |
| 2027 | ListPainter(AttributeSet attr, StyleSheet ss) { |
| 2028 | this.ss = ss; |
| 2029 | /* Get the image to use as a list bullet */ |
| 2030 | String imgstr = (String)attr.getAttribute(CSS.Attribute. |
| 2031 | LIST_STYLE_IMAGE); |
| 2032 | type = null; |
| 2033 | if (imgstr != null && !imgstr.equals("none")) { |
| 2034 | String tmpstr = null; |
| 2035 | try { |
| 2036 | StringTokenizer st = new StringTokenizer(imgstr, "()"); |
| 2037 | if (st.hasMoreTokens()) |
| 2038 | tmpstr = st.nextToken(); |
| 2039 | if (st.hasMoreTokens()) |
| 2040 | tmpstr = st.nextToken(); |
| 2041 | URL u = new URL(tmpstr); |
| 2042 | img = new ImageIcon(u); |
| 2043 | } catch (MalformedURLException e) { |
| 2044 | if (tmpstr != null && ss != null && ss.getBase() != null) { |
| 2045 | try { |
| 2046 | URL u = new URL(ss.getBase(), tmpstr); |
| 2047 | img = new ImageIcon(u); |
| 2048 | } catch (MalformedURLException murle) { |
| 2049 | img = null; |
| 2050 | } |
| 2051 | } |
| 2052 | else { |
| 2053 | img = null; |
| 2054 | } |
| 2055 | } |
| 2056 | } |
| 2057 | |
| 2058 | /* Get the type of bullet to use in the list */ |
| 2059 | if (img == null) { |
| 2060 | type = (CSS.Value)attr.getAttribute(CSS.Attribute. |
| 2061 | LIST_STYLE_TYPE); |
| 2062 | } |
| 2063 | start = 1; |
| 2064 | |
| 2065 | paintRect = new Rectangle(); |
| 2066 | } |
| 2067 | |
| 2068 | /** |
| 2069 | * Returns a string that represents the value |
| 2070 | * of the HTML.Attribute.TYPE attribute. |
| 2071 | * If this attributes is not defined, then |
| 2072 | * then the type defaults to "disc" unless |
| 2073 | * the tag is on Ordered list. In the case |
| 2074 | * of the latter, the default type is "decimal". |
| 2075 | */ |
| 2076 | private CSS.Value getChildType(View childView) { |
| 2077 | CSS.Value childtype = (CSS.Value)childView.getAttributes(). |
| 2078 | getAttribute(CSS.Attribute.LIST_STYLE_TYPE); |
| 2079 | |
| 2080 | if (childtype == null) { |
| 2081 | if (type == null) { |
| 2082 | // Parent view. |
| 2083 | View v = childView.getParent(); |
| 2084 | HTMLDocument doc = (HTMLDocument)v.getDocument(); |
| 2085 | if (doc.matchNameAttribute(v.getElement().getAttributes(), |
| 2086 | HTML.Tag.OL)) { |
| 2087 | childtype = CSS.Value.DECIMAL; |
| 2088 | } else { |
| 2089 | childtype = CSS.Value.DISC; |
| 2090 | } |
| 2091 | } else { |
| 2092 | childtype = type; |
| 2093 | } |
| 2094 | } |
| 2095 | return childtype; |
| 2096 | } |
| 2097 | |
| 2098 | /** |
| 2099 | * Obtains the starting index from <code>parent</code>. |
| 2100 | */ |
| 2101 | private void getStart(View parent) { |
| 2102 | checkedForStart = true; |
| 2103 | Element element = parent.getElement(); |
| 2104 | if (element != null) { |
| 2105 | AttributeSet attr = element.getAttributes(); |
| 2106 | Object startValue; |
| 2107 | if (attr != null && attr.isDefined(HTML.Attribute.START) && |
| 2108 | (startValue = attr.getAttribute |
| 2109 | (HTML.Attribute.START)) != null && |
| 2110 | (startValue instanceof String)) { |
| 2111 | |
| 2112 | try { |
| 2113 | start = Integer.parseInt((String)startValue); |
| 2114 | } |
| 2115 | catch (NumberFormatException nfe) {} |
| 2116 | } |
| 2117 | } |
| 2118 | } |
| 2119 | |
| 2120 | /** |
| 2121 | * Returns an integer that should be used to render the child at |
| 2122 | * <code>childIndex</code> with. The retValue will usually be |
| 2123 | * <code>childIndex</code> + 1, unless <code>parentView</code> |
| 2124 | * has some Views that do not represent LI's, or one of the views |
| 2125 | * has a HTML.Attribute.START specified. |
| 2126 | */ |
| 2127 | private int getRenderIndex(View parentView, int childIndex) { |
| 2128 | if (!checkedForStart) { |
| 2129 | getStart(parentView); |
| 2130 | } |
| 2131 | int retIndex = childIndex; |
| 2132 | for (int counter = childIndex; counter >= 0; counter--) { |
| 2133 | AttributeSet as = parentView.getElement().getElement(counter). |
| 2134 | getAttributes(); |
| 2135 | if (as.getAttribute(StyleConstants.NameAttribute) != |
| 2136 | HTML.Tag.LI) { |
| 2137 | retIndex--; |
| 2138 | } else if (as.isDefined(HTML.Attribute.VALUE)) { |
| 2139 | Object value = as.getAttribute(HTML.Attribute.VALUE); |
| 2140 | if (value != null && |
| 2141 | (value instanceof String)) { |
| 2142 | try { |
| 2143 | int iValue = Integer.parseInt((String)value); |
| 2144 | return retIndex - counter + iValue; |
| 2145 | } |
| 2146 | catch (NumberFormatException nfe) {} |
| 2147 | } |
| 2148 | } |
| 2149 | } |
| 2150 | return retIndex + start; |
| 2151 | } |
| 2152 | |
| 2153 | /** |
| 2154 | * Paints the CSS list decoration according to the |
| 2155 | * attributes given. |
| 2156 | * |
| 2157 | * @param g the rendering surface. |
| 2158 | * @param x the x coordinate of the list item allocation |
| 2159 | * @param y the y coordinate of the list item allocation |
| 2160 | * @param w the width of the list item allocation |
| 2161 | * @param h the height of the list item allocation |
| 2162 | * @param v the allocated area to paint into. |
| 2163 | * @param item which list item is being painted. This |
| 2164 | * is a number greater than or equal to 0. |
| 2165 | */ |
| 2166 | public void paint(Graphics g, float x, float y, float w, float h, View v, int item) { |
| 2167 | View cv = v.getView(item); |
| 2168 | Object name = cv.getElement().getAttributes().getAttribute |
| 2169 | (StyleConstants.NameAttribute); |
| 2170 | // Only draw something if the View is a list item. This won't |
| 2171 | // be the case for comments. |
| 2172 | if (!(name instanceof HTML.Tag) || |
| 2173 | name != HTML.Tag.LI) { |
| 2174 | return; |
| 2175 | } |
| 2176 | // deside on what side draw bullets, etc. |
| 2177 | isLeftToRight = |
| 2178 | cv.getContainer().getComponentOrientation().isLeftToRight(); |
| 2179 | |
| 2180 | // How the list indicator is aligned is not specified, it is |
| 2181 | // left up to the UA. IE and NS differ on this behavior. |
| 2182 | // This is closer to NS where we align to the first line of text. |
| 2183 | // If the child is not text we draw the indicator at the |
| 2184 | // origin (0). |
| 2185 | float align = 0; |
| 2186 | if (cv.getViewCount() > 0) { |
| 2187 | View pView = cv.getView(0); |
| 2188 | Object cName = pView.getElement().getAttributes(). |
| 2189 | getAttribute(StyleConstants.NameAttribute); |
| 2190 | if ((cName == HTML.Tag.P || cName == HTML.Tag.IMPLIED) && |
| 2191 | pView.getViewCount() > 0) { |
| 2192 | paintRect.setBounds((int)x, (int)y, (int)w, (int)h); |
| 2193 | Shape shape = cv.getChildAllocation(0, paintRect); |
| 2194 | if (shape != null && (shape = pView.getView(0). |
| 2195 | getChildAllocation(0, shape)) != null) { |
| 2196 | Rectangle rect = (shape instanceof Rectangle) ? |
| 2197 | (Rectangle)shape : shape.getBounds(); |
| 2198 | |
| 2199 | align = pView.getView(0).getAlignment(View.Y_AXIS); |
| 2200 | y = rect.y; |
| 2201 | h = rect.height; |
| 2202 | } |
| 2203 | } |
| 2204 | } |
| 2205 | |
| 2206 | // set the color of a decoration |
| 2207 | if (ss != null) { |
| 2208 | g.setColor(ss.getForeground(cv.getAttributes())); |
| 2209 | } else { |
| 2210 | g.setColor(Color.black); |
| 2211 | } |
| 2212 | |
| 2213 | if (img != null) { |
| 2214 | drawIcon(g, (int) x, (int) y, (int) w, (int) h, align, |
| 2215 | v.getContainer()); |
| 2216 | return; |
| 2217 | } |
| 2218 | CSS.Value childtype = getChildType(cv); |
| 2219 | Font font = ((StyledDocument)cv.getDocument()). |
| 2220 | getFont(cv.getAttributes()); |
| 2221 | if (font != null) { |
| 2222 | g.setFont(font); |
| 2223 | } |
| 2224 | if (childtype == CSS.Value.SQUARE || childtype == CSS.Value.CIRCLE |
| 2225 | || childtype == CSS.Value.DISC) { |
| 2226 | drawShape(g, childtype, (int) x, (int) y, |
| 2227 | (int) w, (int) h, align); |
| 2228 | } else if (childtype == CSS.Value.DECIMAL) { |
| 2229 | drawLetter(g, '1', (int) x, (int) y, (int) w, (int) h, align, |
| 2230 | getRenderIndex(v, item)); |
| 2231 | } else if (childtype == CSS.Value.LOWER_ALPHA) { |
| 2232 | drawLetter(g, 'a', (int) x, (int) y, (int) w, (int) h, align, |
| 2233 | getRenderIndex(v, item)); |
| 2234 | } else if (childtype == CSS.Value.UPPER_ALPHA) { |
| 2235 | drawLetter(g, 'A', (int) x, (int) y, (int) w, (int) h, align, |
| 2236 | getRenderIndex(v, item)); |
| 2237 | } else if (childtype == CSS.Value.LOWER_ROMAN) { |
| 2238 | drawLetter(g, 'i', (int) x, (int) y, (int) w, (int) h, align, |
| 2239 | getRenderIndex(v, item)); |
| 2240 | } else if (childtype == CSS.Value.UPPER_ROMAN) { |
| 2241 | drawLetter(g, 'I', (int) x, (int) y, (int) w, (int) h, align, |
| 2242 | getRenderIndex(v, item)); |
| 2243 | } |
| 2244 | } |
| 2245 | |
| 2246 | /** |
| 2247 | * Draws the bullet icon specified by the list-style-image argument. |
| 2248 | * |
| 2249 | * @param g the graphics context |
| 2250 | * @param ax x coordinate to place the bullet |
| 2251 | * @param ay y coordinate to place the bullet |
| 2252 | * @param aw width of the container the bullet is placed in |
| 2253 | * @param ah height of the container the bullet is placed in |
| 2254 | * @param align preferred alignment factor for the child view |
| 2255 | */ |
| 2256 | void drawIcon(Graphics g, int ax, int ay, int aw, int ah, |
| 2257 | float align, Component c) { |
| 2258 | // Align to bottom of icon. |
| 2259 | int gap = isLeftToRight ? - (img.getIconWidth() + bulletgap) : |
| 2260 | (aw + bulletgap); |
| 2261 | int x = ax + gap; |
| 2262 | int y = Math.max(ay, ay + (int)(align * ah) -img.getIconHeight()); |
| 2263 | |
| 2264 | img.paintIcon(c, g, x, y); |
| 2265 | } |
| 2266 | |
| 2267 | /** |
| 2268 | * Draws the graphical bullet item specified by the type argument. |
| 2269 | * |
| 2270 | * @param g the graphics context |
| 2271 | * @param type type of bullet to draw (circle, square, disc) |
| 2272 | * @param ax x coordinate to place the bullet |
| 2273 | * @param ay y coordinate to place the bullet |
| 2274 | * @param aw width of the container the bullet is placed in |
| 2275 | * @param ah height of the container the bullet is placed in |
| 2276 | * @param align preferred alignment factor for the child view |
| 2277 | */ |
| 2278 | void drawShape(Graphics g, CSS.Value type, int ax, int ay, int aw, |
| 2279 | int ah, float align) { |
| 2280 | // Align to bottom of shape. |
| 2281 | int gap = isLeftToRight ? - (bulletgap + 8) : (aw + bulletgap); |
| 2282 | int x = ax + gap; |
| 2283 | int y = Math.max(ay, ay + (int)(align * ah) - 8); |
| 2284 | |
| 2285 | if (type == CSS.Value.SQUARE) { |
| 2286 | g.drawRect(x, y, 8, 8); |
| 2287 | } else if (type == CSS.Value.CIRCLE) { |
| 2288 | g.drawOval(x, y, 8, 8); |
| 2289 | } else { |
| 2290 | g.fillOval(x, y, 8, 8); |
| 2291 | } |
| 2292 | } |
| 2293 | |
| 2294 | /** |
| 2295 | * Draws the letter or number for an ordered list. |
| 2296 | * |
| 2297 | * @param g the graphics context |
| 2298 | * @param letter type of ordered list to draw |
| 2299 | * @param ax x coordinate to place the bullet |
| 2300 | * @param ay y coordinate to place the bullet |
| 2301 | * @param aw width of the container the bullet is placed in |
| 2302 | * @param ah height of the container the bullet is placed in |
| 2303 | * @param index position of the list item in the list |
| 2304 | */ |
| 2305 | void drawLetter(Graphics g, char letter, int ax, int ay, int aw, |
| 2306 | int ah, float align, int index) { |
| 2307 | String str = formatItemNum(index, letter); |
| 2308 | str = isLeftToRight ? str + "." : "." + str; |
| 2309 | FontMetrics fm = SwingUtilities2.getFontMetrics(null, g); |
| 2310 | int stringwidth = SwingUtilities2.stringWidth(null, fm, str); |
| 2311 | int gap = isLeftToRight ? - (stringwidth + bulletgap) : |
| 2312 | (aw + bulletgap); |
| 2313 | int x = ax + gap; |
| 2314 | int y = Math.max(ay + fm.getAscent(), ay + (int)(ah * align)); |
| 2315 | SwingUtilities2.drawString(null, g, str, x, y); |
| 2316 | } |
| 2317 | |
| 2318 | /** |
| 2319 | * Converts the item number into the ordered list number |
| 2320 | * (i.e. 1 2 3, i ii iii, a b c, etc. |
| 2321 | * |
| 2322 | * @param itemNum number to format |
| 2323 | * @param type type of ordered list |
| 2324 | */ |
| 2325 | String formatItemNum(int itemNum, char type) { |
| 2326 | String numStyle = "1"; |
| 2327 | |
| 2328 | boolean uppercase = false; |
| 2329 | |
| 2330 | String formattedNum; |
| 2331 | |
| 2332 | switch (type) { |
| 2333 | case '1': |
| 2334 | default: |
| 2335 | formattedNum = String.valueOf(itemNum); |
| 2336 | break; |
| 2337 | |
| 2338 | case 'A': |
| 2339 | uppercase = true; |
| 2340 | // fall through |
| 2341 | case 'a': |
| 2342 | formattedNum = formatAlphaNumerals(itemNum); |
| 2343 | break; |
| 2344 | |
| 2345 | case 'I': |
| 2346 | uppercase = true; |
| 2347 | // fall through |
| 2348 | case 'i': |
| 2349 | formattedNum = formatRomanNumerals(itemNum); |
| 2350 | } |
| 2351 | |
| 2352 | if (uppercase) { |
| 2353 | formattedNum = formattedNum.toUpperCase(); |
| 2354 | } |
| 2355 | |
| 2356 | return formattedNum; |
| 2357 | } |
| 2358 | |
| 2359 | /** |
| 2360 | * Converts the item number into an alphabetic character |
| 2361 | * |
| 2362 | * @param itemNum number to format |
| 2363 | */ |
| 2364 | String formatAlphaNumerals(int itemNum) { |
| 2365 | String result = ""; |
| 2366 | |
| 2367 | if (itemNum > 26) { |
| 2368 | result = formatAlphaNumerals(itemNum / 26) + |
| 2369 | formatAlphaNumerals(itemNum % 26); |
| 2370 | } else { |
| 2371 | // -1 because item is 1 based. |
| 2372 | result = String.valueOf((char)('a' + itemNum - 1)); |
| 2373 | } |
| 2374 | |
| 2375 | return result; |
| 2376 | } |
| 2377 | |
| 2378 | /* list of roman numerals */ |
| 2379 | static final char romanChars[][] = { |
| 2380 | {'i', 'v'}, |
| 2381 | {'x', 'l' }, |
| 2382 | {'c', 'd' }, |
| 2383 | {'m', '?' }, |
| 2384 | }; |
| 2385 | |
| 2386 | /** |
| 2387 | * Converts the item number into a roman numeral |
| 2388 | * |
| 2389 | * @param num number to format |
| 2390 | */ |
| 2391 | String formatRomanNumerals(int num) { |
| 2392 | return formatRomanNumerals(0, num); |
| 2393 | } |
| 2394 | |
| 2395 | /** |
| 2396 | * Converts the item number into a roman numeral |
| 2397 | * |
| 2398 | * @param num number to format |
| 2399 | */ |
| 2400 | String formatRomanNumerals(int level, int num) { |
| 2401 | if (num < 10) { |
| 2402 | return formatRomanDigit(level, num); |
| 2403 | } else { |
| 2404 | return formatRomanNumerals(level + 1, num / 10) + |
| 2405 | formatRomanDigit(level, num % 10); |
| 2406 | } |
| 2407 | } |
| 2408 | |
| 2409 | |
| 2410 | /** |
| 2411 | * Converts the item number into a roman numeral |
| 2412 | * |
| 2413 | * @param level position |
| 2414 | * @param num digit to format |
| 2415 | */ |
| 2416 | String formatRomanDigit(int level, int digit) { |
| 2417 | String result = ""; |
| 2418 | if (digit == 9) { |
| 2419 | result = result + romanChars[level][0]; |
| 2420 | result = result + romanChars[level + 1][0]; |
| 2421 | return result; |
| 2422 | } else if (digit == 4) { |
| 2423 | result = result + romanChars[level][0]; |
| 2424 | result = result + romanChars[level][1]; |
| 2425 | return result; |
| 2426 | } else if (digit >= 5) { |
| 2427 | result = result + romanChars[level][1]; |
| 2428 | digit -= 5; |
| 2429 | } |
| 2430 | |
| 2431 | for (int i = 0; i < digit; i++) { |
| 2432 | result = result + romanChars[level][0]; |
| 2433 | } |
| 2434 | |
| 2435 | return result; |
| 2436 | } |
| 2437 | |
| 2438 | private Rectangle paintRect; |
| 2439 | private boolean checkedForStart; |
| 2440 | private int start; |
| 2441 | private CSS.Value type; |
| 2442 | URL imageurl; |
| 2443 | private StyleSheet ss = null; |
| 2444 | Icon img = null; |
| 2445 | private int bulletgap = 5; |
| 2446 | private boolean isLeftToRight; |
| 2447 | } |
| 2448 | |
| 2449 | |
| 2450 | /** |
| 2451 | * Paints the background image. |
| 2452 | */ |
| 2453 | static class BackgroundImagePainter implements Serializable { |
| 2454 | ImageIcon backgroundImage; |
| 2455 | float hPosition; |
| 2456 | float vPosition; |
| 2457 | // bit mask: 0 for repeat x, 1 for repeat y, 2 for horiz relative, |
| 2458 | // 3 for vert relative |
| 2459 | short flags; |
| 2460 | // These are used when painting, updatePaintCoordinates updates them. |
| 2461 | private int paintX; |
| 2462 | private int paintY; |
| 2463 | private int paintMaxX; |
| 2464 | private int paintMaxY; |
| 2465 | |
| 2466 | BackgroundImagePainter(AttributeSet a, CSS css, StyleSheet ss) { |
| 2467 | backgroundImage = ss.getBackgroundImage(a); |
| 2468 | // Determine the position. |
| 2469 | CSS.BackgroundPosition pos = (CSS.BackgroundPosition)a.getAttribute |
| 2470 | (CSS.Attribute.BACKGROUND_POSITION); |
| 2471 | if (pos != null) { |
| 2472 | hPosition = pos.getHorizontalPosition(); |
| 2473 | vPosition = pos.getVerticalPosition(); |
| 2474 | if (pos.isHorizontalPositionRelativeToSize()) { |
| 2475 | flags |= 4; |
| 2476 | } |
| 2477 | else if (pos.isHorizontalPositionRelativeToSize()) { |
| 2478 | hPosition *= css.getFontSize(a, 12, ss); |
| 2479 | } |
| 2480 | if (pos.isVerticalPositionRelativeToSize()) { |
| 2481 | flags |= 8; |
| 2482 | } |
| 2483 | else if (pos.isVerticalPositionRelativeToFontSize()) { |
| 2484 | vPosition *= css.getFontSize(a, 12, ss); |
| 2485 | } |
| 2486 | } |
| 2487 | // Determine any repeating values. |
| 2488 | CSS.Value repeats = (CSS.Value)a.getAttribute(CSS.Attribute. |
| 2489 | BACKGROUND_REPEAT); |
| 2490 | if (repeats == null || repeats == CSS.Value.BACKGROUND_REPEAT) { |
| 2491 | flags |= 3; |
| 2492 | } |
| 2493 | else if (repeats == CSS.Value.BACKGROUND_REPEAT_X) { |
| 2494 | flags |= 1; |
| 2495 | } |
| 2496 | else if (repeats == CSS.Value.BACKGROUND_REPEAT_Y) { |
| 2497 | flags |= 2; |
| 2498 | } |
| 2499 | } |
| 2500 | |
| 2501 | void paint(Graphics g, float x, float y, float w, float h, View v) { |
| 2502 | Rectangle clip = g.getClipRect(); |
| 2503 | if (clip != null) { |
| 2504 | // Constrain the clip so that images don't draw outside the |
| 2505 | // legal bounds. |
| 2506 | g.clipRect((int)x, (int)y, (int)w, (int)h); |
| 2507 | } |
| 2508 | if ((flags & 3) == 0) { |
| 2509 | // no repeating |
| 2510 | int width = backgroundImage.getIconWidth(); |
| 2511 | int height = backgroundImage.getIconWidth(); |
| 2512 | if ((flags & 4) == 4) { |
| 2513 | paintX = (int)(x + w * hPosition - |
| 2514 | (float)width * hPosition); |
| 2515 | } |
| 2516 | else { |
| 2517 | paintX = (int)x + (int)hPosition; |
| 2518 | } |
| 2519 | if ((flags & 8) == 8) { |
| 2520 | paintY = (int)(y + h * vPosition - |
| 2521 | (float)height * vPosition); |
| 2522 | } |
| 2523 | else { |
| 2524 | paintY = (int)y + (int)vPosition; |
| 2525 | } |
| 2526 | if (clip == null || |
| 2527 | !((paintX + width <= clip.x) || |
| 2528 | (paintY + height <= clip.y) || |
| 2529 | (paintX >= clip.x + clip.width) || |
| 2530 | (paintY >= clip.y + clip.height))) { |
| 2531 | backgroundImage.paintIcon(null, g, paintX, paintY); |
| 2532 | } |
| 2533 | } |
| 2534 | else { |
| 2535 | int width = backgroundImage.getIconWidth(); |
| 2536 | int height = backgroundImage.getIconHeight(); |
| 2537 | if (width > 0 && height > 0) { |
| 2538 | paintX = (int)x; |
| 2539 | paintY = (int)y; |
| 2540 | paintMaxX = (int)(x + w); |
| 2541 | paintMaxY = (int)(y + h); |
| 2542 | if (updatePaintCoordinates(clip, width, height)) { |
| 2543 | while (paintX < paintMaxX) { |
| 2544 | int ySpot = paintY; |
| 2545 | while (ySpot < paintMaxY) { |
| 2546 | backgroundImage.paintIcon(null, g, paintX, |
| 2547 | ySpot); |
| 2548 | ySpot += height; |
| 2549 | } |
| 2550 | paintX += width; |
| 2551 | } |
| 2552 | } |
| 2553 | } |
| 2554 | } |
| 2555 | if (clip != null) { |
| 2556 | // Reset clip. |
| 2557 | g.setClip(clip.x, clip.y, clip.width, clip.height); |
| 2558 | } |
| 2559 | } |
| 2560 | |
| 2561 | private boolean updatePaintCoordinates |
| 2562 | (Rectangle clip, int width, int height){ |
| 2563 | if ((flags & 3) == 1) { |
| 2564 | paintMaxY = paintY + 1; |
| 2565 | } |
| 2566 | else if ((flags & 3) == 2) { |
| 2567 | paintMaxX = paintX + 1; |
| 2568 | } |
| 2569 | if (clip != null) { |
| 2570 | if ((flags & 3) == 1 && ((paintY + height <= clip.y) || |
| 2571 | (paintY > clip.y + clip.height))) { |
| 2572 | // not visible. |
| 2573 | return false; |
| 2574 | } |
| 2575 | if ((flags & 3) == 2 && ((paintX + width <= clip.x) || |
| 2576 | (paintX > clip.x + clip.width))) { |
| 2577 | // not visible. |
| 2578 | return false; |
| 2579 | } |
| 2580 | if ((flags & 1) == 1) { |
| 2581 | if ((clip.x + clip.width) < paintMaxX) { |
| 2582 | if ((clip.x + clip.width - paintX) % width == 0) { |
| 2583 | paintMaxX = clip.x + clip.width; |
| 2584 | } |
| 2585 | else { |
| 2586 | paintMaxX = ((clip.x + clip.width - paintX) / |
| 2587 | width + 1) * width + paintX; |
| 2588 | } |
| 2589 | } |
| 2590 | if (clip.x > paintX) { |
| 2591 | paintX = (clip.x - paintX) / width * width + paintX; |
| 2592 | } |
| 2593 | } |
| 2594 | if ((flags & 2) == 2) { |
| 2595 | if ((clip.y + clip.height) < paintMaxY) { |
| 2596 | if ((clip.y + clip.height - paintY) % height == 0) { |
| 2597 | paintMaxY = clip.y + clip.height; |
| 2598 | } |
| 2599 | else { |
| 2600 | paintMaxY = ((clip.y + clip.height - paintY) / |
| 2601 | height + 1) * height + paintY; |
| 2602 | } |
| 2603 | } |
| 2604 | if (clip.y > paintY) { |
| 2605 | paintY = (clip.y - paintY) / height * height + paintY; |
| 2606 | } |
| 2607 | } |
| 2608 | } |
| 2609 | // Valid |
| 2610 | return true; |
| 2611 | } |
| 2612 | } |
| 2613 | |
| 2614 | |
| 2615 | /** |
| 2616 | * A subclass of MuxingAttributeSet that translates between |
| 2617 | * CSS and HTML and StyleConstants. The AttributeSets used are |
| 2618 | * the CSS rules that match the Views Elements. |
| 2619 | */ |
| 2620 | class ViewAttributeSet extends MuxingAttributeSet { |
| 2621 | ViewAttributeSet(View v) { |
| 2622 | host = v; |
| 2623 | |
| 2624 | // PENDING(prinz) fix this up to be a more realistic |
| 2625 | // implementation. |
| 2626 | Document doc = v.getDocument(); |
| 2627 | SearchBuffer sb = SearchBuffer.obtainSearchBuffer(); |
| 2628 | Vector muxList = sb.getVector(); |
| 2629 | try { |
| 2630 | if (doc instanceof HTMLDocument) { |
| 2631 | StyleSheet styles = StyleSheet.this; |
| 2632 | Element elem = v.getElement(); |
| 2633 | AttributeSet a = elem.getAttributes(); |
| 2634 | AttributeSet htmlAttr = styles.translateHTMLToCSS(a); |
| 2635 | |
| 2636 | if (htmlAttr.getAttributeCount() != 0) { |
| 2637 | muxList.addElement(htmlAttr); |
| 2638 | } |
| 2639 | if (elem.isLeaf()) { |
| 2640 | Enumeration keys = a.getAttributeNames(); |
| 2641 | while (keys.hasMoreElements()) { |
| 2642 | Object key = keys.nextElement(); |
| 2643 | if (key instanceof HTML.Tag) { |
| 2644 | if ((HTML.Tag)key == HTML.Tag.A) { |
| 2645 | Object o = a.getAttribute((HTML.Tag)key); |
| 2646 | /** |
| 2647 | In the case of an A tag, the css rules |
| 2648 | apply only for tags that have their |
| 2649 | href attribute defined and not for |
| 2650 | anchors that only have their name attributes |
| 2651 | defined, i.e anchors that function as |
| 2652 | destinations. Hence we do not add the |
| 2653 | attributes for that latter kind of |
| 2654 | anchors. When CSS2 support is added, |
| 2655 | it will be possible to specificity this |
| 2656 | kind of conditional behaviour in the |
| 2657 | stylesheet. |
| 2658 | **/ |
| 2659 | if (o != null && o instanceof AttributeSet) { |
| 2660 | AttributeSet attr = (AttributeSet)o; |
| 2661 | if (attr.getAttribute(HTML.Attribute.HREF) == null) { |
| 2662 | continue; |
| 2663 | } |
| 2664 | } |
| 2665 | } |
| 2666 | AttributeSet cssRule = styles.getRule((HTML.Tag) key, elem); |
| 2667 | if (cssRule != null) { |
| 2668 | muxList.addElement(cssRule); |
| 2669 | } |
| 2670 | } |
| 2671 | } |
| 2672 | } else { |
| 2673 | HTML.Tag t = (HTML.Tag) a.getAttribute |
| 2674 | (StyleConstants.NameAttribute); |
| 2675 | AttributeSet cssRule = styles.getRule(t, elem); |
| 2676 | if (cssRule != null) { |
| 2677 | muxList.addElement(cssRule); |
| 2678 | } |
| 2679 | } |
| 2680 | } |
| 2681 | AttributeSet[] attrs = new AttributeSet[muxList.size()]; |
| 2682 | muxList.copyInto(attrs); |
| 2683 | setAttributes(attrs); |
| 2684 | } |
| 2685 | finally { |
| 2686 | SearchBuffer.releaseSearchBuffer(sb); |
| 2687 | } |
| 2688 | } |
| 2689 | |
| 2690 | // --- AttributeSet methods ---------------------------- |
| 2691 | |
| 2692 | /** |
| 2693 | * Checks whether a given attribute is defined. |
| 2694 | * This will convert the key over to CSS if the |
| 2695 | * key is a StyleConstants key that has a CSS |
| 2696 | * mapping. |
| 2697 | * |
| 2698 | * @param key the attribute key |
| 2699 | * @return true if the attribute is defined |
| 2700 | * @see AttributeSet#isDefined |
| 2701 | */ |
| 2702 | public boolean isDefined(Object key) { |
| 2703 | if (key instanceof StyleConstants) { |
| 2704 | Object cssKey = css.styleConstantsKeyToCSSKey |
| 2705 | ((StyleConstants)key); |
| 2706 | if (cssKey != null) { |
| 2707 | key = cssKey; |
| 2708 | } |
| 2709 | } |
| 2710 | return super.isDefined(key); |
| 2711 | } |
| 2712 | |
| 2713 | /** |
| 2714 | * Gets the value of an attribute. If the requested |
| 2715 | * attribute is a StyleConstants attribute that has |
| 2716 | * a CSS mapping, the request will be converted. |
| 2717 | * |
| 2718 | * @param key the attribute name |
| 2719 | * @return the attribute value |
| 2720 | * @see AttributeSet#getAttribute |
| 2721 | */ |
| 2722 | public Object getAttribute(Object key) { |
| 2723 | if (key instanceof StyleConstants) { |
| 2724 | Object cssKey = css.styleConstantsKeyToCSSKey |
| 2725 | ((StyleConstants)key); |
| 2726 | if (cssKey != null) { |
| 2727 | Object value = doGetAttribute(cssKey); |
| 2728 | if (value instanceof CSS.CssValue) { |
| 2729 | return ((CSS.CssValue)value).toStyleConstants |
| 2730 | ((StyleConstants)key, host); |
| 2731 | } |
| 2732 | } |
| 2733 | } |
| 2734 | return doGetAttribute(key); |
| 2735 | } |
| 2736 | |
| 2737 | Object doGetAttribute(Object key) { |
| 2738 | Object retValue = super.getAttribute(key); |
| 2739 | if (retValue != null) { |
| 2740 | return retValue; |
| 2741 | } |
| 2742 | // didn't find it... try parent if it's a css attribute |
| 2743 | // that is inherited. |
| 2744 | if (key instanceof CSS.Attribute) { |
| 2745 | CSS.Attribute css = (CSS.Attribute) key; |
| 2746 | if (css.isInherited()) { |
| 2747 | AttributeSet parent = getResolveParent(); |
| 2748 | if (parent != null) |
| 2749 | return parent.getAttribute(key); |
| 2750 | } |
| 2751 | } |
| 2752 | return null; |
| 2753 | } |
| 2754 | |
| 2755 | /** |
| 2756 | * If not overriden, the resolving parent defaults to |
| 2757 | * the parent element. |
| 2758 | * |
| 2759 | * @return the attributes from the parent |
| 2760 | * @see AttributeSet#getResolveParent |
| 2761 | */ |
| 2762 | public AttributeSet getResolveParent() { |
| 2763 | if (host == null) { |
| 2764 | return null; |
| 2765 | } |
| 2766 | View parent = host.getParent(); |
| 2767 | return (parent != null) ? parent.getAttributes() : null; |
| 2768 | } |
| 2769 | |
| 2770 | /** View created for. */ |
| 2771 | View host; |
| 2772 | } |
| 2773 | |
| 2774 | |
| 2775 | /** |
| 2776 | * A subclass of MuxingAttributeSet that implements Style. Currently |
| 2777 | * the MutableAttributeSet methods are unimplemented, that is they |
| 2778 | * do nothing. |
| 2779 | */ |
| 2780 | // PENDING(sky): Decide what to do with this. Either make it |
| 2781 | // contain a SimpleAttributeSet that modify methods are delegated to, |
| 2782 | // or change getRule to return an AttributeSet and then don't make this |
| 2783 | // implement Style. |
| 2784 | static class ResolvedStyle extends MuxingAttributeSet implements |
| 2785 | Serializable, Style { |
| 2786 | ResolvedStyle(String name, AttributeSet[] attrs, int extendedIndex) { |
| 2787 | super(attrs); |
| 2788 | this.name = name; |
| 2789 | this.extendedIndex = extendedIndex; |
| 2790 | } |
| 2791 | |
| 2792 | /** |
| 2793 | * Inserts a Style into the receiver so that the styles the |
| 2794 | * receiver represents are still ordered by specificity. |
| 2795 | * <code>style</code> will be added before any extended styles, that |
| 2796 | * is before extendedIndex. |
| 2797 | */ |
| 2798 | synchronized void insertStyle(Style style, int specificity) { |
| 2799 | AttributeSet[] attrs = getAttributes(); |
| 2800 | int maxCounter = attrs.length; |
| 2801 | int counter = 0; |
| 2802 | for (;counter < extendedIndex; counter++) { |
| 2803 | if (specificity > getSpecificity(((Style)attrs[counter]). |
| 2804 | getName())) { |
| 2805 | break; |
| 2806 | } |
| 2807 | } |
| 2808 | insertAttributeSetAt(style, counter); |
| 2809 | extendedIndex++; |
| 2810 | } |
| 2811 | |
| 2812 | /** |
| 2813 | * Removes a previously added style. This will do nothing if |
| 2814 | * <code>style</code> is not referenced by the receiver. |
| 2815 | */ |
| 2816 | synchronized void removeStyle(Style style) { |
| 2817 | AttributeSet[] attrs = getAttributes(); |
| 2818 | |
| 2819 | for (int counter = attrs.length - 1; counter >= 0; counter--) { |
| 2820 | if (attrs[counter] == style) { |
| 2821 | removeAttributeSetAt(counter); |
| 2822 | if (counter < extendedIndex) { |
| 2823 | extendedIndex--; |
| 2824 | } |
| 2825 | break; |
| 2826 | } |
| 2827 | } |
| 2828 | } |
| 2829 | |
| 2830 | /** |
| 2831 | * Adds <code>s</code> as one of the Attributesets to look up |
| 2832 | * attributes in. |
| 2833 | */ |
| 2834 | synchronized void insertExtendedStyleAt(Style attr, int index) { |
| 2835 | insertAttributeSetAt(attr, extendedIndex + index); |
| 2836 | } |
| 2837 | |
| 2838 | /** |
| 2839 | * Adds <code>s</code> as one of the AttributeSets to look up |
| 2840 | * attributes in. It will be the AttributeSet last checked. |
| 2841 | */ |
| 2842 | synchronized void addExtendedStyle(Style attr) { |
| 2843 | insertAttributeSetAt(attr, getAttributes().length); |
| 2844 | } |
| 2845 | |
| 2846 | /** |
| 2847 | * Removes the style at <code>index</code> + |
| 2848 | * <code>extendedIndex</code>. |
| 2849 | */ |
| 2850 | synchronized void removeExtendedStyleAt(int index) { |
| 2851 | removeAttributeSetAt(extendedIndex + index); |
| 2852 | } |
| 2853 | |
| 2854 | /** |
| 2855 | * Returns true if the receiver matches <code>selector</code>, where |
| 2856 | * a match is defined by the CSS rule matching. |
| 2857 | * Each simple selector must be separated by a single space. |
| 2858 | */ |
| 2859 | protected boolean matches(String selector) { |
| 2860 | int sLast = selector.length(); |
| 2861 | |
| 2862 | if (sLast == 0) { |
| 2863 | return false; |
| 2864 | } |
| 2865 | int thisLast = name.length(); |
| 2866 | int sCurrent = selector.lastIndexOf(' '); |
| 2867 | int thisCurrent = name.lastIndexOf(' '); |
| 2868 | if (sCurrent >= 0) { |
| 2869 | sCurrent++; |
| 2870 | } |
| 2871 | if (thisCurrent >= 0) { |
| 2872 | thisCurrent++; |
| 2873 | } |
| 2874 | if (!matches(selector, sCurrent, sLast, thisCurrent, thisLast)) { |
| 2875 | return false; |
| 2876 | } |
| 2877 | while (sCurrent != -1) { |
| 2878 | sLast = sCurrent - 1; |
| 2879 | sCurrent = selector.lastIndexOf(' ', sLast - 1); |
| 2880 | if (sCurrent >= 0) { |
| 2881 | sCurrent++; |
| 2882 | } |
| 2883 | boolean match = false; |
| 2884 | while (!match && thisCurrent != -1) { |
| 2885 | thisLast = thisCurrent - 1; |
| 2886 | thisCurrent = name.lastIndexOf(' ', thisLast - 1); |
| 2887 | if (thisCurrent >= 0) { |
| 2888 | thisCurrent++; |
| 2889 | } |
| 2890 | match = matches(selector, sCurrent, sLast, thisCurrent, |
| 2891 | thisLast); |
| 2892 | } |
| 2893 | if (!match) { |
| 2894 | return false; |
| 2895 | } |
| 2896 | } |
| 2897 | return true; |
| 2898 | } |
| 2899 | |
| 2900 | /** |
| 2901 | * Returns true if the substring of the receiver, in the range |
| 2902 | * thisCurrent, thisLast matches the substring of selector in |
| 2903 | * the ranme sCurrent to sLast based on CSS selector matching. |
| 2904 | */ |
| 2905 | boolean matches(String selector, int sCurrent, int sLast, |
| 2906 | int thisCurrent, int thisLast) { |
| 2907 | sCurrent = Math.max(sCurrent, 0); |
| 2908 | thisCurrent = Math.max(thisCurrent, 0); |
| 2909 | int thisDotIndex = boundedIndexOf(name, '.', thisCurrent, |
| 2910 | thisLast); |
| 2911 | int thisPoundIndex = boundedIndexOf(name, '#', thisCurrent, |
| 2912 | thisLast); |
| 2913 | int sDotIndex = boundedIndexOf(selector, '.', sCurrent, sLast); |
| 2914 | int sPoundIndex = boundedIndexOf(selector, '#', sCurrent, sLast); |
| 2915 | if (sDotIndex != -1) { |
| 2916 | // Selector has a '.', which indicates name must match it, |
| 2917 | // or if the '.' starts the selector than name must have |
| 2918 | // the same class (doesn't matter what element name). |
| 2919 | if (thisDotIndex == -1) { |
| 2920 | return false; |
| 2921 | } |
| 2922 | if (sCurrent == sDotIndex) { |
| 2923 | if ((thisLast - thisDotIndex) != (sLast - sDotIndex) || |
| 2924 | !selector.regionMatches(sCurrent, name, thisDotIndex, |
| 2925 | (thisLast - thisDotIndex))) { |
| 2926 | return false; |
| 2927 | } |
| 2928 | } |
| 2929 | else { |
| 2930 | // Has to fully match. |
| 2931 | if ((sLast - sCurrent) != (thisLast - thisCurrent) || |
| 2932 | !selector.regionMatches(sCurrent, name, thisCurrent, |
| 2933 | (thisLast - thisCurrent))) { |
| 2934 | return false; |
| 2935 | } |
| 2936 | } |
| 2937 | return true; |
| 2938 | } |
| 2939 | if (sPoundIndex != -1) { |
| 2940 | // Selector has a '#', which indicates name must match it, |
| 2941 | // or if the '#' starts the selector than name must have |
| 2942 | // the same id (doesn't matter what element name). |
| 2943 | if (thisPoundIndex == -1) { |
| 2944 | return false; |
| 2945 | } |
| 2946 | if (sCurrent == sPoundIndex) { |
| 2947 | if ((thisLast - thisPoundIndex) !=(sLast - sPoundIndex) || |
| 2948 | !selector.regionMatches(sCurrent, name, thisPoundIndex, |
| 2949 | (thisLast - thisPoundIndex))) { |
| 2950 | return false; |
| 2951 | } |
| 2952 | } |
| 2953 | else { |
| 2954 | // Has to fully match. |
| 2955 | if ((sLast - sCurrent) != (thisLast - thisCurrent) || |
| 2956 | !selector.regionMatches(sCurrent, name, thisCurrent, |
| 2957 | (thisLast - thisCurrent))) { |
| 2958 | return false; |
| 2959 | } |
| 2960 | } |
| 2961 | return true; |
| 2962 | } |
| 2963 | if (thisDotIndex != -1) { |
| 2964 | // Reciever references a class, just check element name. |
| 2965 | return (((thisDotIndex - thisCurrent) == (sLast - sCurrent)) && |
| 2966 | selector.regionMatches(sCurrent, name, thisCurrent, |
| 2967 | thisDotIndex - thisCurrent)); |
| 2968 | } |
| 2969 | if (thisPoundIndex != -1) { |
| 2970 | // Reciever references an id, just check element name. |
| 2971 | return (((thisPoundIndex - thisCurrent) ==(sLast - sCurrent))&& |
| 2972 | selector.regionMatches(sCurrent, name, thisCurrent, |
| 2973 | thisPoundIndex - thisCurrent)); |
| 2974 | } |
| 2975 | // Fail through, no classes or ides, just check string. |
| 2976 | return (((thisLast - thisCurrent) == (sLast - sCurrent)) && |
| 2977 | selector.regionMatches(sCurrent, name, thisCurrent, |
| 2978 | thisLast - thisCurrent)); |
| 2979 | } |
| 2980 | |
| 2981 | /** |
| 2982 | * Similiar to String.indexOf, but allows an upper bound |
| 2983 | * (this is slower in that it will still check string starting at |
| 2984 | * start. |
| 2985 | */ |
| 2986 | int boundedIndexOf(String string, char search, int start, |
| 2987 | int end) { |
| 2988 | int retValue = string.indexOf(search, start); |
| 2989 | if (retValue >= end) { |
| 2990 | return -1; |
| 2991 | } |
| 2992 | return retValue; |
| 2993 | } |
| 2994 | |
| 2995 | public void addAttribute(Object name, Object value) {} |
| 2996 | public void addAttributes(AttributeSet attributes) {} |
| 2997 | public void removeAttribute(Object name) {} |
| 2998 | public void removeAttributes(Enumeration<?> names) {} |
| 2999 | public void removeAttributes(AttributeSet attributes) {} |
| 3000 | public void setResolveParent(AttributeSet parent) {} |
| 3001 | public String getName() {return name;} |
| 3002 | public void addChangeListener(ChangeListener l) {} |
| 3003 | public void removeChangeListener(ChangeListener l) {} |
| 3004 | public ChangeListener[] getChangeListeners() { |
| 3005 | return new ChangeListener[0]; |
| 3006 | } |
| 3007 | |
| 3008 | /** The name of the Style, which is the selector. |
| 3009 | * This will NEVER change! |
| 3010 | */ |
| 3011 | String name; |
| 3012 | /** Start index of styles coming from other StyleSheets. */ |
| 3013 | private int extendedIndex; |
| 3014 | } |
| 3015 | |
| 3016 | |
| 3017 | /** |
| 3018 | * SelectorMapping contains a specifitiy, as an integer, and an associated |
| 3019 | * Style. It can also reference children <code>SelectorMapping</code>s, |
| 3020 | * so that it behaves like a tree. |
| 3021 | * <p> |
| 3022 | * This is not thread safe, it is assumed the caller will take the |
| 3023 | * necessary precations if this is to be used in a threaded environment. |
| 3024 | */ |
| 3025 | static class SelectorMapping implements Serializable { |
| 3026 | public SelectorMapping(int specificity) { |
| 3027 | this.specificity = specificity; |
| 3028 | } |
| 3029 | |
| 3030 | /** |
| 3031 | * Returns the specificity this mapping represents. |
| 3032 | */ |
| 3033 | public int getSpecificity() { |
| 3034 | return specificity; |
| 3035 | } |
| 3036 | |
| 3037 | /** |
| 3038 | * Sets the Style associated with this mapping. |
| 3039 | */ |
| 3040 | public void setStyle(Style style) { |
| 3041 | this.style = style; |
| 3042 | } |
| 3043 | |
| 3044 | /** |
| 3045 | * Returns the Style associated with this mapping. |
| 3046 | */ |
| 3047 | public Style getStyle() { |
| 3048 | return style; |
| 3049 | } |
| 3050 | |
| 3051 | /** |
| 3052 | * Returns the child mapping identified by the simple selector |
| 3053 | * <code>selector</code>. If a child mapping does not exist for |
| 3054 | *<code>selector</code>, and <code>create</code> is true, a new |
| 3055 | * one will be created. |
| 3056 | */ |
| 3057 | public SelectorMapping getChildSelectorMapping(String selector, |
| 3058 | boolean create) { |
| 3059 | SelectorMapping retValue = null; |
| 3060 | |
| 3061 | if (children != null) { |
| 3062 | retValue = (SelectorMapping)children.get(selector); |
| 3063 | } |
| 3064 | else if (create) { |
| 3065 | children = new HashMap(7); |
| 3066 | } |
| 3067 | if (retValue == null && create) { |
| 3068 | int specificity = getChildSpecificity(selector); |
| 3069 | |
| 3070 | retValue = createChildSelectorMapping(specificity); |
| 3071 | children.put(selector, retValue); |
| 3072 | } |
| 3073 | return retValue; |
| 3074 | } |
| 3075 | |
| 3076 | /** |
| 3077 | * Creates a child <code>SelectorMapping</code> with the specified |
| 3078 | * <code>specificity</code>. |
| 3079 | */ |
| 3080 | protected SelectorMapping createChildSelectorMapping(int specificity) { |
| 3081 | return new SelectorMapping(specificity); |
| 3082 | } |
| 3083 | |
| 3084 | /** |
| 3085 | * Returns the specificity for the child selector |
| 3086 | * <code>selector</code>. |
| 3087 | */ |
| 3088 | protected int getChildSpecificity(String selector) { |
| 3089 | // class (.) 100 |
| 3090 | // id (#) 10000 |
| 3091 | char firstChar = selector.charAt(0); |
| 3092 | int specificity = getSpecificity(); |
| 3093 | |
| 3094 | if (firstChar == '.') { |
| 3095 | specificity += 100; |
| 3096 | } |
| 3097 | else if (firstChar == '#') { |
| 3098 | specificity += 10000; |
| 3099 | } |
| 3100 | else { |
| 3101 | specificity += 1; |
| 3102 | if (selector.indexOf('.') != -1) { |
| 3103 | specificity += 100; |
| 3104 | } |
| 3105 | if (selector.indexOf('#') != -1) { |
| 3106 | specificity += 10000; |
| 3107 | } |
| 3108 | } |
| 3109 | return specificity; |
| 3110 | } |
| 3111 | |
| 3112 | /** |
| 3113 | * The specificity for this selector. |
| 3114 | */ |
| 3115 | private int specificity; |
| 3116 | /** |
| 3117 | * Style for this selector. |
| 3118 | */ |
| 3119 | private Style style; |
| 3120 | /** |
| 3121 | * Any sub selectors. Key will be String, and value will be |
| 3122 | * another SelectorMapping. |
| 3123 | */ |
| 3124 | private HashMap children; |
| 3125 | } |
| 3126 | |
| 3127 | |
| 3128 | // ---- Variables --------------------------------------------- |
| 3129 | |
| 3130 | final static int DEFAULT_FONT_SIZE = 3; |
| 3131 | |
| 3132 | private CSS css; |
| 3133 | |
| 3134 | /** |
| 3135 | * An inverted graph of the selectors. |
| 3136 | */ |
| 3137 | private SelectorMapping selectorMapping; |
| 3138 | |
| 3139 | /** Maps from selector (as a string) to Style that includes all |
| 3140 | * relevant styles. */ |
| 3141 | private Hashtable resolvedStyles; |
| 3142 | |
| 3143 | /** Vector of StyleSheets that the rules are to reference. |
| 3144 | */ |
| 3145 | private Vector linkedStyleSheets; |
| 3146 | |
| 3147 | /** Where the style sheet was found. Used for relative imports. */ |
| 3148 | private URL base; |
| 3149 | |
| 3150 | |
| 3151 | /** |
| 3152 | * Default parser for CSS specifications that get loaded into |
| 3153 | * the StyleSheet.<p> |
| 3154 | * This class is NOT thread safe, do not ask it to parse while it is |
| 3155 | * in the middle of parsing. |
| 3156 | */ |
| 3157 | class CssParser implements CSSParser.CSSParserCallback { |
| 3158 | |
| 3159 | /** |
| 3160 | * Parses the passed in CSS declaration into an AttributeSet. |
| 3161 | */ |
| 3162 | public AttributeSet parseDeclaration(String string) { |
| 3163 | try { |
| 3164 | return parseDeclaration(new StringReader(string)); |
| 3165 | } catch (IOException ioe) {} |
| 3166 | return null; |
| 3167 | } |
| 3168 | |
| 3169 | /** |
| 3170 | * Parses the passed in CSS declaration into an AttributeSet. |
| 3171 | */ |
| 3172 | public AttributeSet parseDeclaration(Reader r) throws IOException { |
| 3173 | parse(base, r, true, false); |
| 3174 | return declaration.copyAttributes(); |
| 3175 | } |
| 3176 | |
| 3177 | /** |
| 3178 | * Parse the given CSS stream |
| 3179 | */ |
| 3180 | public void parse(URL base, Reader r, boolean parseDeclaration, |
| 3181 | boolean isLink) throws IOException { |
| 3182 | this.base = base; |
| 3183 | this.isLink = isLink; |
| 3184 | this.parsingDeclaration = parseDeclaration; |
| 3185 | declaration.removeAttributes(declaration); |
| 3186 | selectorTokens.removeAllElements(); |
| 3187 | selectors.removeAllElements(); |
| 3188 | propertyName = null; |
| 3189 | parser.parse(r, this, parseDeclaration); |
| 3190 | } |
| 3191 | |
| 3192 | // |
| 3193 | // CSSParserCallback methods, public to implement the interface. |
| 3194 | // |
| 3195 | |
| 3196 | /** |
| 3197 | * Invoked when a valid @import is encountered, will call |
| 3198 | * <code>importStyleSheet</code> if a |
| 3199 | * <code>MalformedURLException</code> is not thrown in creating |
| 3200 | * the URL. |
| 3201 | */ |
| 3202 | public void handleImport(String importString) { |
| 3203 | URL url = CSS.getURL(base, importString); |
| 3204 | if (url != null) { |
| 3205 | importStyleSheet(url); |
| 3206 | } |
| 3207 | } |
| 3208 | |
| 3209 | /** |
| 3210 | * A selector has been encountered. |
| 3211 | */ |
| 3212 | public void handleSelector(String selector) { |
| 3213 | //class and index selectors are case sensitive |
| 3214 | if (!(selector.startsWith(".") |
| 3215 | || selector.startsWith("#"))) { |
| 3216 | selector = selector.toLowerCase(); |
| 3217 | } |
| 3218 | int length = selector.length(); |
| 3219 | |
| 3220 | if (selector.endsWith(",")) { |
| 3221 | if (length > 1) { |
| 3222 | selector = selector.substring(0, length - 1); |
| 3223 | selectorTokens.addElement(selector); |
| 3224 | } |
| 3225 | addSelector(); |
| 3226 | } |
| 3227 | else if (length > 0) { |
| 3228 | selectorTokens.addElement(selector); |
| 3229 | } |
| 3230 | } |
| 3231 | |
| 3232 | /** |
| 3233 | * Invoked when the start of a rule is encountered. |
| 3234 | */ |
| 3235 | public void startRule() { |
| 3236 | if (selectorTokens.size() > 0) { |
| 3237 | addSelector(); |
| 3238 | } |
| 3239 | propertyName = null; |
| 3240 | } |
| 3241 | |
| 3242 | /** |
| 3243 | * Invoked when a property name is encountered. |
| 3244 | */ |
| 3245 | public void handleProperty(String property) { |
| 3246 | propertyName = property; |
| 3247 | } |
| 3248 | |
| 3249 | /** |
| 3250 | * Invoked when a property value is encountered. |
| 3251 | */ |
| 3252 | public void handleValue(String value) { |
| 3253 | if (propertyName != null && value != null && value.length() > 0) { |
| 3254 | CSS.Attribute cssKey = CSS.getAttribute(propertyName); |
| 3255 | if (cssKey != null) { |
| 3256 | // There is currently no mechanism to determine real |
| 3257 | // base that style sheet was loaded from. For the time |
| 3258 | // being, this maps for LIST_STYLE_IMAGE, which appear |
| 3259 | // to be the only one that currently matters. A more |
| 3260 | // general mechanism is definately needed. |
| 3261 | if (cssKey == CSS.Attribute.LIST_STYLE_IMAGE) { |
| 3262 | if (value != null && !value.equals("none")) { |
| 3263 | URL url = CSS.getURL(base, value); |
| 3264 | |
| 3265 | if (url != null) { |
| 3266 | value = url.toString(); |
| 3267 | } |
| 3268 | } |
| 3269 | } |
| 3270 | addCSSAttribute(declaration, cssKey, value); |
| 3271 | } |
| 3272 | propertyName = null; |
| 3273 | } |
| 3274 | } |
| 3275 | |
| 3276 | /** |
| 3277 | * Invoked when the end of a rule is encountered. |
| 3278 | */ |
| 3279 | public void endRule() { |
| 3280 | int n = selectors.size(); |
| 3281 | for (int i = 0; i < n; i++) { |
| 3282 | String[] selector = (String[]) selectors.elementAt(i); |
| 3283 | if (selector.length > 0) { |
| 3284 | StyleSheet.this.addRule(selector, declaration, isLink); |
| 3285 | } |
| 3286 | } |
| 3287 | declaration.removeAttributes(declaration); |
| 3288 | selectors.removeAllElements(); |
| 3289 | } |
| 3290 | |
| 3291 | private void addSelector() { |
| 3292 | String[] selector = new String[selectorTokens.size()]; |
| 3293 | selectorTokens.copyInto(selector); |
| 3294 | selectors.addElement(selector); |
| 3295 | selectorTokens.removeAllElements(); |
| 3296 | } |
| 3297 | |
| 3298 | |
| 3299 | Vector selectors = new Vector(); |
| 3300 | Vector selectorTokens = new Vector(); |
| 3301 | /** Name of the current property. */ |
| 3302 | String propertyName; |
| 3303 | MutableAttributeSet declaration = new SimpleAttributeSet(); |
| 3304 | /** True if parsing a declaration, that is the Reader will not |
| 3305 | * contain a selector. */ |
| 3306 | boolean parsingDeclaration; |
| 3307 | /** True if the attributes are coming from a linked/imported style. */ |
| 3308 | boolean isLink; |
| 3309 | /** Where the CSS stylesheet lives. */ |
| 3310 | URL base; |
| 3311 | CSSParser parser = new CSSParser(); |
| 3312 | } |
| 3313 | |
| 3314 | void rebaseSizeMap(int base) { |
| 3315 | final int minimalFontSize = 4; |
| 3316 | sizeMap = new int[sizeMapDefault.length]; |
| 3317 | for (int i = 0; i < sizeMapDefault.length; i++) { |
| 3318 | sizeMap[i] = Math.max(base * sizeMapDefault[i] / |
| 3319 | sizeMapDefault[CSS.baseFontSizeIndex], |
| 3320 | minimalFontSize); |
| 3321 | } |
| 3322 | |
| 3323 | } |
| 3324 | |
| 3325 | int[] getSizeMap() { |
| 3326 | return sizeMap; |
| 3327 | } |
| 3328 | boolean isW3CLengthUnits() { |
| 3329 | return w3cLengthUnits; |
| 3330 | } |
| 3331 | |
| 3332 | /** |
| 3333 | * The HTML/CSS size model has seven slots |
| 3334 | * that one can assign sizes to. |
| 3335 | */ |
| 3336 | static final int sizeMapDefault[] = { 8, 10, 12, 14, 18, 24, 36 }; |
| 3337 | |
| 3338 | private int sizeMap[] = sizeMapDefault; |
| 3339 | private boolean w3cLengthUnits = false; |
| 3340 | } |