J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2004 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; |
| 26 | |
| 27 | import java.io.*; |
| 28 | import java.awt.*; |
| 29 | import java.awt.event.ActionEvent; |
| 30 | import java.beans.PropertyChangeEvent; |
| 31 | import java.beans.PropertyChangeListener; |
| 32 | import javax.swing.event.*; |
| 33 | import javax.swing.Action; |
| 34 | import javax.swing.JEditorPane; |
| 35 | import javax.swing.KeyStroke; |
| 36 | import javax.swing.UIManager; |
| 37 | |
| 38 | /** |
| 39 | * This is the set of things needed by a text component |
| 40 | * to be a reasonably functioning editor for some <em>type</em> |
| 41 | * of text document. This implementation provides a default |
| 42 | * implementation which treats text as styled text and |
| 43 | * provides a minimal set of actions for editing styled text. |
| 44 | * |
| 45 | * @author Timothy Prinzing |
| 46 | */ |
| 47 | public class StyledEditorKit extends DefaultEditorKit { |
| 48 | |
| 49 | /** |
| 50 | * Creates a new EditorKit used for styled documents. |
| 51 | */ |
| 52 | public StyledEditorKit() { |
| 53 | createInputAttributeUpdated(); |
| 54 | createInputAttributes(); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Gets the input attributes for the pane. When |
| 59 | * the caret moves and there is no selection, the |
| 60 | * input attributes are automatically mutated to |
| 61 | * reflect the character attributes of the current |
| 62 | * caret location. The styled editing actions |
| 63 | * use the input attributes to carry out their |
| 64 | * actions. |
| 65 | * |
| 66 | * @return the attribute set |
| 67 | */ |
| 68 | public MutableAttributeSet getInputAttributes() { |
| 69 | return inputAttributes; |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Fetches the element representing the current |
| 74 | * run of character attributes for the caret. |
| 75 | * |
| 76 | * @return the element |
| 77 | */ |
| 78 | public Element getCharacterAttributeRun() { |
| 79 | return currentRun; |
| 80 | } |
| 81 | |
| 82 | // --- EditorKit methods --------------------------- |
| 83 | |
| 84 | /** |
| 85 | * Fetches the command list for the editor. This is |
| 86 | * the list of commands supported by the superclass |
| 87 | * augmented by the collection of commands defined |
| 88 | * locally for style operations. |
| 89 | * |
| 90 | * @return the command list |
| 91 | */ |
| 92 | public Action[] getActions() { |
| 93 | return TextAction.augmentList(super.getActions(), this.defaultActions); |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Creates an uninitialized text storage model |
| 98 | * that is appropriate for this type of editor. |
| 99 | * |
| 100 | * @return the model |
| 101 | */ |
| 102 | public Document createDefaultDocument() { |
| 103 | return new DefaultStyledDocument(); |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Called when the kit is being installed into |
| 108 | * a JEditorPane. |
| 109 | * |
| 110 | * @param c the JEditorPane |
| 111 | */ |
| 112 | public void install(JEditorPane c) { |
| 113 | c.addCaretListener(inputAttributeUpdater); |
| 114 | c.addPropertyChangeListener(inputAttributeUpdater); |
| 115 | Caret caret = c.getCaret(); |
| 116 | if (caret != null) { |
| 117 | inputAttributeUpdater.updateInputAttributes |
| 118 | (caret.getDot(), caret.getMark(), c); |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Called when the kit is being removed from the |
| 124 | * JEditorPane. This is used to unregister any |
| 125 | * listeners that were attached. |
| 126 | * |
| 127 | * @param c the JEditorPane |
| 128 | */ |
| 129 | public void deinstall(JEditorPane c) { |
| 130 | c.removeCaretListener(inputAttributeUpdater); |
| 131 | c.removePropertyChangeListener(inputAttributeUpdater); |
| 132 | |
| 133 | // remove references to current document so it can be collected. |
| 134 | currentRun = null; |
| 135 | currentParagraph = null; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * Fetches a factory that is suitable for producing |
| 140 | * views of any models that are produced by this |
| 141 | * kit. This is implemented to return View implementations |
| 142 | * for the following kinds of elements: |
| 143 | * <ul> |
| 144 | * <li>AbstractDocument.ContentElementName |
| 145 | * <li>AbstractDocument.ParagraphElementName |
| 146 | * <li>AbstractDocument.SectionElementName |
| 147 | * <li>StyleConstants.ComponentElementName |
| 148 | * <li>StyleConstants.IconElementName |
| 149 | * </ul> |
| 150 | * |
| 151 | * @return the factory |
| 152 | */ |
| 153 | public ViewFactory getViewFactory() { |
| 154 | return defaultFactory; |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Creates a copy of the editor kit. |
| 159 | * |
| 160 | * @return the copy |
| 161 | */ |
| 162 | public Object clone() { |
| 163 | StyledEditorKit o = (StyledEditorKit)super.clone(); |
| 164 | o.currentRun = o.currentParagraph = null; |
| 165 | o.createInputAttributeUpdated(); |
| 166 | o.createInputAttributes(); |
| 167 | return o; |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Creates the AttributeSet used for the selection. |
| 172 | */ |
| 173 | private void createInputAttributes() { |
| 174 | inputAttributes = new SimpleAttributeSet() { |
| 175 | public AttributeSet getResolveParent() { |
| 176 | return (currentParagraph != null) ? |
| 177 | currentParagraph.getAttributes() : null; |
| 178 | } |
| 179 | |
| 180 | public Object clone() { |
| 181 | return new SimpleAttributeSet(this); |
| 182 | } |
| 183 | }; |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Creates a new <code>AttributeTracker</code>. |
| 188 | */ |
| 189 | private void createInputAttributeUpdated() { |
| 190 | inputAttributeUpdater = new AttributeTracker(); |
| 191 | } |
| 192 | |
| 193 | |
| 194 | private static final ViewFactory defaultFactory = new StyledViewFactory(); |
| 195 | |
| 196 | Element currentRun; |
| 197 | Element currentParagraph; |
| 198 | |
| 199 | /** |
| 200 | * This is the set of attributes used to store the |
| 201 | * input attributes. |
| 202 | */ |
| 203 | MutableAttributeSet inputAttributes; |
| 204 | |
| 205 | /** |
| 206 | * This listener will be attached to the caret of |
| 207 | * the text component that the EditorKit gets installed |
| 208 | * into. This should keep the input attributes updated |
| 209 | * for use by the styled actions. |
| 210 | */ |
| 211 | private AttributeTracker inputAttributeUpdater; |
| 212 | |
| 213 | /** |
| 214 | * Tracks caret movement and keeps the input attributes set |
| 215 | * to reflect the current set of attribute definitions at the |
| 216 | * caret position. |
| 217 | * <p>This implements PropertyChangeListener to update the |
| 218 | * input attributes when the Document changes, as if the Document |
| 219 | * changes the attributes will almost certainly change. |
| 220 | */ |
| 221 | class AttributeTracker implements CaretListener, PropertyChangeListener, Serializable { |
| 222 | |
| 223 | /** |
| 224 | * Updates the attributes. <code>dot</code> and <code>mark</code> |
| 225 | * mark give the positions of the selection in <code>c</code>. |
| 226 | */ |
| 227 | void updateInputAttributes(int dot, int mark, JTextComponent c) { |
| 228 | // EditorKit might not have installed the StyledDocument yet. |
| 229 | Document aDoc = c.getDocument(); |
| 230 | if (!(aDoc instanceof StyledDocument)) { |
| 231 | return ; |
| 232 | } |
| 233 | int start = Math.min(dot, mark); |
| 234 | // record current character attributes. |
| 235 | StyledDocument doc = (StyledDocument)aDoc; |
| 236 | // If nothing is selected, get the attributes from the character |
| 237 | // before the start of the selection, otherwise get the attributes |
| 238 | // from the character element at the start of the selection. |
| 239 | Element run; |
| 240 | currentParagraph = doc.getParagraphElement(start); |
| 241 | if (currentParagraph.getStartOffset() == start || dot != mark) { |
| 242 | // Get the attributes from the character at the selection |
| 243 | // if in a different paragrah! |
| 244 | run = doc.getCharacterElement(start); |
| 245 | } |
| 246 | else { |
| 247 | run = doc.getCharacterElement(Math.max(start-1, 0)); |
| 248 | } |
| 249 | if (run != currentRun) { |
| 250 | /* |
| 251 | * PENDING(prinz) All attributes that represent a single |
| 252 | * glyph position and can't be inserted into should be |
| 253 | * removed from the input attributes... this requires |
| 254 | * mixing in an interface to indicate that condition. |
| 255 | * When we can add things again this logic needs to be |
| 256 | * improved!! |
| 257 | */ |
| 258 | currentRun = run; |
| 259 | createInputAttributes(currentRun, getInputAttributes()); |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | public void propertyChange(PropertyChangeEvent evt) { |
| 264 | Object newValue = evt.getNewValue(); |
| 265 | Object source = evt.getSource(); |
| 266 | |
| 267 | if ((source instanceof JTextComponent) && |
| 268 | (newValue instanceof Document)) { |
| 269 | // New document will have changed selection to 0,0. |
| 270 | updateInputAttributes(0, 0, (JTextComponent)source); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | public void caretUpdate(CaretEvent e) { |
| 275 | updateInputAttributes(e.getDot(), e.getMark(), |
| 276 | (JTextComponent)e.getSource()); |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * Copies the key/values in <code>element</code>s AttributeSet into |
| 282 | * <code>set</code>. This does not copy component, icon, or element |
| 283 | * names attributes. Subclasses may wish to refine what is and what |
| 284 | * isn't copied here. But be sure to first remove all the attributes that |
| 285 | * are in <code>set</code>.<p> |
| 286 | * This is called anytime the caret moves over a different location. |
| 287 | * |
| 288 | */ |
| 289 | protected void createInputAttributes(Element element, |
| 290 | MutableAttributeSet set) { |
| 291 | if (element.getAttributes().getAttributeCount() > 0 |
| 292 | || element.getEndOffset() - element.getStartOffset() > 1 |
| 293 | || element.getEndOffset() < element.getDocument().getLength()) { |
| 294 | set.removeAttributes(set); |
| 295 | set.addAttributes(element.getAttributes()); |
| 296 | set.removeAttribute(StyleConstants.ComponentAttribute); |
| 297 | set.removeAttribute(StyleConstants.IconAttribute); |
| 298 | set.removeAttribute(AbstractDocument.ElementNameAttribute); |
| 299 | set.removeAttribute(StyleConstants.ComposedTextAttribute); |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | // ---- default ViewFactory implementation --------------------- |
| 304 | |
| 305 | static class StyledViewFactory implements ViewFactory { |
| 306 | |
| 307 | public View create(Element elem) { |
| 308 | String kind = elem.getName(); |
| 309 | if (kind != null) { |
| 310 | if (kind.equals(AbstractDocument.ContentElementName)) { |
| 311 | return new LabelView(elem); |
| 312 | } else if (kind.equals(AbstractDocument.ParagraphElementName)) { |
| 313 | return new ParagraphView(elem); |
| 314 | } else if (kind.equals(AbstractDocument.SectionElementName)) { |
| 315 | return new BoxView(elem, View.Y_AXIS); |
| 316 | } else if (kind.equals(StyleConstants.ComponentElementName)) { |
| 317 | return new ComponentView(elem); |
| 318 | } else if (kind.equals(StyleConstants.IconElementName)) { |
| 319 | return new IconView(elem); |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | // default to text display |
| 324 | return new LabelView(elem); |
| 325 | } |
| 326 | |
| 327 | } |
| 328 | |
| 329 | // --- Action implementations --------------------------------- |
| 330 | |
| 331 | private static final Action[] defaultActions = { |
| 332 | new FontFamilyAction("font-family-SansSerif", "SansSerif"), |
| 333 | new FontFamilyAction("font-family-Monospaced", "Monospaced"), |
| 334 | new FontFamilyAction("font-family-Serif", "Serif"), |
| 335 | new FontSizeAction("font-size-8", 8), |
| 336 | new FontSizeAction("font-size-10", 10), |
| 337 | new FontSizeAction("font-size-12", 12), |
| 338 | new FontSizeAction("font-size-14", 14), |
| 339 | new FontSizeAction("font-size-16", 16), |
| 340 | new FontSizeAction("font-size-18", 18), |
| 341 | new FontSizeAction("font-size-24", 24), |
| 342 | new FontSizeAction("font-size-36", 36), |
| 343 | new FontSizeAction("font-size-48", 48), |
| 344 | new AlignmentAction("left-justify", StyleConstants.ALIGN_LEFT), |
| 345 | new AlignmentAction("center-justify", StyleConstants.ALIGN_CENTER), |
| 346 | new AlignmentAction("right-justify", StyleConstants.ALIGN_RIGHT), |
| 347 | new BoldAction(), |
| 348 | new ItalicAction(), |
| 349 | new StyledInsertBreakAction(), |
| 350 | new UnderlineAction() |
| 351 | }; |
| 352 | |
| 353 | /** |
| 354 | * An action that assumes it's being fired on a JEditorPane |
| 355 | * with a StyledEditorKit (or subclass) installed. This has |
| 356 | * some convenience methods for causing character or paragraph |
| 357 | * level attribute changes. The convenience methods will |
| 358 | * throw an IllegalArgumentException if the assumption of |
| 359 | * a StyledDocument, a JEditorPane, or a StyledEditorKit |
| 360 | * fail to be true. |
| 361 | * <p> |
| 362 | * The component that gets acted upon by the action |
| 363 | * will be the source of the ActionEvent if the source |
| 364 | * can be narrowed to a JEditorPane type. If the source |
| 365 | * can't be narrowed, the most recently focused text |
| 366 | * component is changed. If neither of these are the |
| 367 | * case, the action cannot be performed. |
| 368 | * <p> |
| 369 | * <strong>Warning:</strong> |
| 370 | * Serialized objects of this class will not be compatible with |
| 371 | * future Swing releases. The current serialization support is |
| 372 | * appropriate for short term storage or RMI between applications running |
| 373 | * the same version of Swing. As of 1.4, support for long term storage |
| 374 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 375 | * has been added to the <code>java.beans</code> package. |
| 376 | * Please see {@link java.beans.XMLEncoder}. |
| 377 | */ |
| 378 | public abstract static class StyledTextAction extends TextAction { |
| 379 | |
| 380 | /** |
| 381 | * Creates a new StyledTextAction from a string action name. |
| 382 | * |
| 383 | * @param nm the name of the action |
| 384 | */ |
| 385 | public StyledTextAction(String nm) { |
| 386 | super(nm); |
| 387 | } |
| 388 | |
| 389 | /** |
| 390 | * Gets the target editor for an action. |
| 391 | * |
| 392 | * @param e the action event |
| 393 | * @return the editor |
| 394 | */ |
| 395 | protected final JEditorPane getEditor(ActionEvent e) { |
| 396 | JTextComponent tcomp = getTextComponent(e); |
| 397 | if (tcomp instanceof JEditorPane) { |
| 398 | return (JEditorPane) tcomp; |
| 399 | } |
| 400 | return null; |
| 401 | } |
| 402 | |
| 403 | /** |
| 404 | * Gets the document associated with an editor pane. |
| 405 | * |
| 406 | * @param e the editor |
| 407 | * @return the document |
| 408 | * @exception IllegalArgumentException for the wrong document type |
| 409 | */ |
| 410 | protected final StyledDocument getStyledDocument(JEditorPane e) { |
| 411 | Document d = e.getDocument(); |
| 412 | if (d instanceof StyledDocument) { |
| 413 | return (StyledDocument) d; |
| 414 | } |
| 415 | throw new IllegalArgumentException("document must be StyledDocument"); |
| 416 | } |
| 417 | |
| 418 | /** |
| 419 | * Gets the editor kit associated with an editor pane. |
| 420 | * |
| 421 | * @param e the editor pane |
| 422 | * @return the kit |
| 423 | * @exception IllegalArgumentException for the wrong document type |
| 424 | */ |
| 425 | protected final StyledEditorKit getStyledEditorKit(JEditorPane e) { |
| 426 | EditorKit k = e.getEditorKit(); |
| 427 | if (k instanceof StyledEditorKit) { |
| 428 | return (StyledEditorKit) k; |
| 429 | } |
| 430 | throw new IllegalArgumentException("EditorKit must be StyledEditorKit"); |
| 431 | } |
| 432 | |
| 433 | /** |
| 434 | * Applies the given attributes to character |
| 435 | * content. If there is a selection, the attributes |
| 436 | * are applied to the selection range. If there |
| 437 | * is no selection, the attributes are applied to |
| 438 | * the input attribute set which defines the attributes |
| 439 | * for any new text that gets inserted. |
| 440 | * |
| 441 | * @param editor the editor |
| 442 | * @param attr the attributes |
| 443 | * @param replace if true, then replace the existing attributes first |
| 444 | */ |
| 445 | protected final void setCharacterAttributes(JEditorPane editor, |
| 446 | AttributeSet attr, boolean replace) { |
| 447 | int p0 = editor.getSelectionStart(); |
| 448 | int p1 = editor.getSelectionEnd(); |
| 449 | if (p0 != p1) { |
| 450 | StyledDocument doc = getStyledDocument(editor); |
| 451 | doc.setCharacterAttributes(p0, p1 - p0, attr, replace); |
| 452 | } |
| 453 | StyledEditorKit k = getStyledEditorKit(editor); |
| 454 | MutableAttributeSet inputAttributes = k.getInputAttributes(); |
| 455 | if (replace) { |
| 456 | inputAttributes.removeAttributes(inputAttributes); |
| 457 | } |
| 458 | inputAttributes.addAttributes(attr); |
| 459 | } |
| 460 | |
| 461 | /** |
| 462 | * Applies the given attributes to paragraphs. If |
| 463 | * there is a selection, the attributes are applied |
| 464 | * to the paragraphs that intersect the selection. |
| 465 | * if there is no selection, the attributes are applied |
| 466 | * to the paragraph at the current caret position. |
| 467 | * |
| 468 | * @param editor the editor |
| 469 | * @param attr the attributes |
| 470 | * @param replace if true, replace the existing attributes first |
| 471 | */ |
| 472 | protected final void setParagraphAttributes(JEditorPane editor, |
| 473 | AttributeSet attr, boolean replace) { |
| 474 | int p0 = editor.getSelectionStart(); |
| 475 | int p1 = editor.getSelectionEnd(); |
| 476 | StyledDocument doc = getStyledDocument(editor); |
| 477 | doc.setParagraphAttributes(p0, p1 - p0, attr, replace); |
| 478 | } |
| 479 | |
| 480 | } |
| 481 | |
| 482 | /** |
| 483 | * An action to set the font family in the associated |
| 484 | * JEditorPane. This will use the family specified as |
| 485 | * the command string on the ActionEvent if there is one, |
| 486 | * otherwise the family that was initialized with will be used. |
| 487 | * <p> |
| 488 | * <strong>Warning:</strong> |
| 489 | * Serialized objects of this class will not be compatible with |
| 490 | * future Swing releases. The current serialization support is |
| 491 | * appropriate for short term storage or RMI between applications running |
| 492 | * the same version of Swing. As of 1.4, support for long term storage |
| 493 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 494 | * has been added to the <code>java.beans</code> package. |
| 495 | * Please see {@link java.beans.XMLEncoder}. |
| 496 | */ |
| 497 | public static class FontFamilyAction extends StyledTextAction { |
| 498 | |
| 499 | /** |
| 500 | * Creates a new FontFamilyAction. |
| 501 | * |
| 502 | * @param nm the action name |
| 503 | * @param family the font family |
| 504 | */ |
| 505 | public FontFamilyAction(String nm, String family) { |
| 506 | super(nm); |
| 507 | this.family = family; |
| 508 | } |
| 509 | |
| 510 | /** |
| 511 | * Sets the font family. |
| 512 | * |
| 513 | * @param e the event |
| 514 | */ |
| 515 | public void actionPerformed(ActionEvent e) { |
| 516 | JEditorPane editor = getEditor(e); |
| 517 | if (editor != null) { |
| 518 | String family = this.family; |
| 519 | if ((e != null) && (e.getSource() == editor)) { |
| 520 | String s = e.getActionCommand(); |
| 521 | if (s != null) { |
| 522 | family = s; |
| 523 | } |
| 524 | } |
| 525 | if (family != null) { |
| 526 | MutableAttributeSet attr = new SimpleAttributeSet(); |
| 527 | StyleConstants.setFontFamily(attr, family); |
| 528 | setCharacterAttributes(editor, attr, false); |
| 529 | } else { |
| 530 | UIManager.getLookAndFeel().provideErrorFeedback(editor); |
| 531 | } |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | private String family; |
| 536 | } |
| 537 | |
| 538 | /** |
| 539 | * An action to set the font size in the associated |
| 540 | * JEditorPane. This will use the size specified as |
| 541 | * the command string on the ActionEvent if there is one, |
| 542 | * otherwise the size that was initialized with will be used. |
| 543 | * <p> |
| 544 | * <strong>Warning:</strong> |
| 545 | * Serialized objects of this class will not be compatible with |
| 546 | * future Swing releases. The current serialization support is |
| 547 | * appropriate for short term storage or RMI between applications running |
| 548 | * the same version of Swing. As of 1.4, support for long term storage |
| 549 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 550 | * has been added to the <code>java.beans</code> package. |
| 551 | * Please see {@link java.beans.XMLEncoder}. |
| 552 | */ |
| 553 | public static class FontSizeAction extends StyledTextAction { |
| 554 | |
| 555 | /** |
| 556 | * Creates a new FontSizeAction. |
| 557 | * |
| 558 | * @param nm the action name |
| 559 | * @param size the font size |
| 560 | */ |
| 561 | public FontSizeAction(String nm, int size) { |
| 562 | super(nm); |
| 563 | this.size = size; |
| 564 | } |
| 565 | |
| 566 | /** |
| 567 | * Sets the font size. |
| 568 | * |
| 569 | * @param e the action event |
| 570 | */ |
| 571 | public void actionPerformed(ActionEvent e) { |
| 572 | JEditorPane editor = getEditor(e); |
| 573 | if (editor != null) { |
| 574 | int size = this.size; |
| 575 | if ((e != null) && (e.getSource() == editor)) { |
| 576 | String s = e.getActionCommand(); |
| 577 | try { |
| 578 | size = Integer.parseInt(s, 10); |
| 579 | } catch (NumberFormatException nfe) { |
| 580 | } |
| 581 | } |
| 582 | if (size != 0) { |
| 583 | MutableAttributeSet attr = new SimpleAttributeSet(); |
| 584 | StyleConstants.setFontSize(attr, size); |
| 585 | setCharacterAttributes(editor, attr, false); |
| 586 | } else { |
| 587 | UIManager.getLookAndFeel().provideErrorFeedback(editor); |
| 588 | } |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | private int size; |
| 593 | } |
| 594 | |
| 595 | /** |
| 596 | * An action to set foreground color. This sets the |
| 597 | * <code>StyleConstants.Foreground</code> attribute for the |
| 598 | * currently selected range of the target JEditorPane. |
| 599 | * This is done by calling |
| 600 | * <code>StyledDocument.setCharacterAttributes</code> |
| 601 | * on the styled document associated with the target |
| 602 | * JEditorPane. |
| 603 | * <p> |
| 604 | * If the target text component is specified as the |
| 605 | * source of the ActionEvent and there is a command string, |
| 606 | * the command string will be interpreted as the foreground |
| 607 | * color. It will be interpreted by called |
| 608 | * <code>Color.decode</code>, and should therefore be |
| 609 | * legal input for that method. |
| 610 | * <p> |
| 611 | * <strong>Warning:</strong> |
| 612 | * Serialized objects of this class will not be compatible with |
| 613 | * future Swing releases. The current serialization support is |
| 614 | * appropriate for short term storage or RMI between applications running |
| 615 | * the same version of Swing. As of 1.4, support for long term storage |
| 616 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 617 | * has been added to the <code>java.beans</code> package. |
| 618 | * Please see {@link java.beans.XMLEncoder}. |
| 619 | */ |
| 620 | public static class ForegroundAction extends StyledTextAction { |
| 621 | |
| 622 | /** |
| 623 | * Creates a new ForegroundAction. |
| 624 | * |
| 625 | * @param nm the action name |
| 626 | * @param fg the foreground color |
| 627 | */ |
| 628 | public ForegroundAction(String nm, Color fg) { |
| 629 | super(nm); |
| 630 | this.fg = fg; |
| 631 | } |
| 632 | |
| 633 | /** |
| 634 | * Sets the foreground color. |
| 635 | * |
| 636 | * @param e the action event |
| 637 | */ |
| 638 | public void actionPerformed(ActionEvent e) { |
| 639 | JEditorPane editor = getEditor(e); |
| 640 | if (editor != null) { |
| 641 | Color fg = this.fg; |
| 642 | if ((e != null) && (e.getSource() == editor)) { |
| 643 | String s = e.getActionCommand(); |
| 644 | try { |
| 645 | fg = Color.decode(s); |
| 646 | } catch (NumberFormatException nfe) { |
| 647 | } |
| 648 | } |
| 649 | if (fg != null) { |
| 650 | MutableAttributeSet attr = new SimpleAttributeSet(); |
| 651 | StyleConstants.setForeground(attr, fg); |
| 652 | setCharacterAttributes(editor, attr, false); |
| 653 | } else { |
| 654 | UIManager.getLookAndFeel().provideErrorFeedback(editor); |
| 655 | } |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | private Color fg; |
| 660 | } |
| 661 | |
| 662 | /** |
| 663 | * An action to set paragraph alignment. This sets the |
| 664 | * <code>StyleConstants.Alignment</code> attribute for the |
| 665 | * currently selected range of the target JEditorPane. |
| 666 | * This is done by calling |
| 667 | * <code>StyledDocument.setParagraphAttributes</code> |
| 668 | * on the styled document associated with the target |
| 669 | * JEditorPane. |
| 670 | * <p> |
| 671 | * If the target text component is specified as the |
| 672 | * source of the ActionEvent and there is a command string, |
| 673 | * the command string will be interpreted as an integer |
| 674 | * that should be one of the legal values for the |
| 675 | * <code>StyleConstants.Alignment</code> attribute. |
| 676 | * <p> |
| 677 | * <strong>Warning:</strong> |
| 678 | * Serialized objects of this class will not be compatible with |
| 679 | * future Swing releases. The current serialization support is |
| 680 | * appropriate for short term storage or RMI between applications running |
| 681 | * the same version of Swing. As of 1.4, support for long term storage |
| 682 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 683 | * has been added to the <code>java.beans</code> package. |
| 684 | * Please see {@link java.beans.XMLEncoder}. |
| 685 | */ |
| 686 | public static class AlignmentAction extends StyledTextAction { |
| 687 | |
| 688 | /** |
| 689 | * Creates a new AlignmentAction. |
| 690 | * |
| 691 | * @param nm the action name |
| 692 | * @param a the alignment >= 0 |
| 693 | */ |
| 694 | public AlignmentAction(String nm, int a) { |
| 695 | super(nm); |
| 696 | this.a = a; |
| 697 | } |
| 698 | |
| 699 | /** |
| 700 | * Sets the alignment. |
| 701 | * |
| 702 | * @param e the action event |
| 703 | */ |
| 704 | public void actionPerformed(ActionEvent e) { |
| 705 | JEditorPane editor = getEditor(e); |
| 706 | if (editor != null) { |
| 707 | int a = this.a; |
| 708 | if ((e != null) && (e.getSource() == editor)) { |
| 709 | String s = e.getActionCommand(); |
| 710 | try { |
| 711 | a = Integer.parseInt(s, 10); |
| 712 | } catch (NumberFormatException nfe) { |
| 713 | } |
| 714 | } |
| 715 | MutableAttributeSet attr = new SimpleAttributeSet(); |
| 716 | StyleConstants.setAlignment(attr, a); |
| 717 | setParagraphAttributes(editor, attr, false); |
| 718 | } |
| 719 | } |
| 720 | |
| 721 | private int a; |
| 722 | } |
| 723 | |
| 724 | /** |
| 725 | * An action to toggle the bold attribute. |
| 726 | * <p> |
| 727 | * <strong>Warning:</strong> |
| 728 | * Serialized objects of this class will not be compatible with |
| 729 | * future Swing releases. The current serialization support is |
| 730 | * appropriate for short term storage or RMI between applications running |
| 731 | * the same version of Swing. As of 1.4, support for long term storage |
| 732 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 733 | * has been added to the <code>java.beans</code> package. |
| 734 | * Please see {@link java.beans.XMLEncoder}. |
| 735 | */ |
| 736 | public static class BoldAction extends StyledTextAction { |
| 737 | |
| 738 | /** |
| 739 | * Constructs a new BoldAction. |
| 740 | */ |
| 741 | public BoldAction() { |
| 742 | super("font-bold"); |
| 743 | } |
| 744 | |
| 745 | /** |
| 746 | * Toggles the bold attribute. |
| 747 | * |
| 748 | * @param e the action event |
| 749 | */ |
| 750 | public void actionPerformed(ActionEvent e) { |
| 751 | JEditorPane editor = getEditor(e); |
| 752 | if (editor != null) { |
| 753 | StyledEditorKit kit = getStyledEditorKit(editor); |
| 754 | MutableAttributeSet attr = kit.getInputAttributes(); |
| 755 | boolean bold = (StyleConstants.isBold(attr)) ? false : true; |
| 756 | SimpleAttributeSet sas = new SimpleAttributeSet(); |
| 757 | StyleConstants.setBold(sas, bold); |
| 758 | setCharacterAttributes(editor, sas, false); |
| 759 | } |
| 760 | } |
| 761 | } |
| 762 | |
| 763 | /** |
| 764 | * An action to toggle the italic attribute. |
| 765 | * <p> |
| 766 | * <strong>Warning:</strong> |
| 767 | * Serialized objects of this class will not be compatible with |
| 768 | * future Swing releases. The current serialization support is |
| 769 | * appropriate for short term storage or RMI between applications running |
| 770 | * the same version of Swing. As of 1.4, support for long term storage |
| 771 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 772 | * has been added to the <code>java.beans</code> package. |
| 773 | * Please see {@link java.beans.XMLEncoder}. |
| 774 | */ |
| 775 | public static class ItalicAction extends StyledTextAction { |
| 776 | |
| 777 | /** |
| 778 | * Constructs a new ItalicAction. |
| 779 | */ |
| 780 | public ItalicAction() { |
| 781 | super("font-italic"); |
| 782 | } |
| 783 | |
| 784 | /** |
| 785 | * Toggles the italic attribute. |
| 786 | * |
| 787 | * @param e the action event |
| 788 | */ |
| 789 | public void actionPerformed(ActionEvent e) { |
| 790 | JEditorPane editor = getEditor(e); |
| 791 | if (editor != null) { |
| 792 | StyledEditorKit kit = getStyledEditorKit(editor); |
| 793 | MutableAttributeSet attr = kit.getInputAttributes(); |
| 794 | boolean italic = (StyleConstants.isItalic(attr)) ? false : true; |
| 795 | SimpleAttributeSet sas = new SimpleAttributeSet(); |
| 796 | StyleConstants.setItalic(sas, italic); |
| 797 | setCharacterAttributes(editor, sas, false); |
| 798 | } |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | /** |
| 803 | * An action to toggle the underline attribute. |
| 804 | * <p> |
| 805 | * <strong>Warning:</strong> |
| 806 | * Serialized objects of this class will not be compatible with |
| 807 | * future Swing releases. The current serialization support is |
| 808 | * appropriate for short term storage or RMI between applications running |
| 809 | * the same version of Swing. As of 1.4, support for long term storage |
| 810 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 811 | * has been added to the <code>java.beans</code> package. |
| 812 | * Please see {@link java.beans.XMLEncoder}. |
| 813 | */ |
| 814 | public static class UnderlineAction extends StyledTextAction { |
| 815 | |
| 816 | /** |
| 817 | * Constructs a new UnderlineAction. |
| 818 | */ |
| 819 | public UnderlineAction() { |
| 820 | super("font-underline"); |
| 821 | } |
| 822 | |
| 823 | /** |
| 824 | * Toggles the Underline attribute. |
| 825 | * |
| 826 | * @param e the action event |
| 827 | */ |
| 828 | public void actionPerformed(ActionEvent e) { |
| 829 | JEditorPane editor = getEditor(e); |
| 830 | if (editor != null) { |
| 831 | StyledEditorKit kit = getStyledEditorKit(editor); |
| 832 | MutableAttributeSet attr = kit.getInputAttributes(); |
| 833 | boolean underline = (StyleConstants.isUnderline(attr)) ? false : true; |
| 834 | SimpleAttributeSet sas = new SimpleAttributeSet(); |
| 835 | StyleConstants.setUnderline(sas, underline); |
| 836 | setCharacterAttributes(editor, sas, false); |
| 837 | } |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | |
| 842 | /** |
| 843 | * StyledInsertBreakAction has similar behavior to that of |
| 844 | * <code>DefaultEditorKit.InsertBreakAction</code>. That is when |
| 845 | * its <code>actionPerformed</code> method is invoked, a newline |
| 846 | * is inserted. Beyond that, this will reset the input attributes to |
| 847 | * what they were before the newline was inserted. |
| 848 | */ |
| 849 | static class StyledInsertBreakAction extends StyledTextAction { |
| 850 | private SimpleAttributeSet tempSet; |
| 851 | |
| 852 | StyledInsertBreakAction() { |
| 853 | super(insertBreakAction); |
| 854 | } |
| 855 | |
| 856 | public void actionPerformed(ActionEvent e) { |
| 857 | JEditorPane target = getEditor(e); |
| 858 | |
| 859 | if (target != null) { |
| 860 | if ((!target.isEditable()) || (!target.isEnabled())) { |
| 861 | UIManager.getLookAndFeel().provideErrorFeedback(target); |
| 862 | return; |
| 863 | } |
| 864 | StyledEditorKit sek = getStyledEditorKit(target); |
| 865 | |
| 866 | if (tempSet != null) { |
| 867 | tempSet.removeAttributes(tempSet); |
| 868 | } |
| 869 | else { |
| 870 | tempSet = new SimpleAttributeSet(); |
| 871 | } |
| 872 | tempSet.addAttributes(sek.getInputAttributes()); |
| 873 | target.replaceSelection("\n"); |
| 874 | |
| 875 | MutableAttributeSet ia = sek.getInputAttributes(); |
| 876 | |
| 877 | ia.removeAttributes(ia); |
| 878 | ia.addAttributes(tempSet); |
| 879 | tempSet.removeAttributes(tempSet); |
| 880 | } |
| 881 | else { |
| 882 | // See if we are in a JTextComponent. |
| 883 | JTextComponent text = getTextComponent(e); |
| 884 | |
| 885 | if (text != null) { |
| 886 | if ((!text.isEditable()) || (!text.isEnabled())) { |
| 887 | UIManager.getLookAndFeel().provideErrorFeedback(target); |
| 888 | return; |
| 889 | } |
| 890 | text.replaceSelection("\n"); |
| 891 | } |
| 892 | } |
| 893 | } |
| 894 | } |
| 895 | } |