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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | package javax.swing.text.html; | ||
| 26 | |||
| 27 | import java.net.*; | ||
| 28 | import java.io.*; | ||
| 29 | import java.awt.*; | ||
| 30 | import java.awt.event.*; | ||
| 31 | import java.util.*; | ||
| 32 | import javax.swing.*; | ||
| 33 | import javax.swing.event.*; | ||
| 34 | import javax.swing.text.*; | ||
| 35 | |||
| 36 | /** | ||
| 37 | * Component decorator that implements the view interface | ||
| 38 | * for form elements, <input>, <textarea>, | ||
| 39 | * and <select>. The model for the component is stored | ||
| 40 | * as an attribute of the the element (using StyleConstants.ModelAttribute), | ||
| 41 | * and is used to build the component of the view. The type | ||
| 42 | * of the model is assumed to of the type that would be set by | ||
| 43 | * <code>HTMLDocument.HTMLReader.FormAction</code>. If there are | ||
| 44 | * multiple views mapped over the document, they will share the | ||
| 45 | * embedded component models. | ||
| 46 | * <p> | ||
| 47 | * The following table shows what components get built | ||
| 48 | * by this view. | ||
| 49 | * <table summary="shows what components get built by this view"> | ||
| 50 | * <tr> | ||
| 51 | * <th>Element Type</th> | ||
| 52 | * <th>Component built</th> | ||
| 53 | * </tr> | ||
| 54 | * <tr> | ||
| 55 | * <td>input, type button</td> | ||
| 56 | * <td>JButton</td> | ||
| 57 | * </tr> | ||
| 58 | * <tr> | ||
| 59 | * <td>input, type checkbox</td> | ||
| 60 | * <td>JCheckBox</td> | ||
| 61 | * </tr> | ||
| 62 | * <tr> | ||
| 63 | * <td>input, type image</td> | ||
| 64 | * <td>JButton</td> | ||
| 65 | * </tr> | ||
| 66 | * <tr> | ||
| 67 | * <td>input, type password</td> | ||
| 68 | * <td>JPasswordField</td> | ||
| 69 | * </tr> | ||
| 70 | * <tr> | ||
| 71 | * <td>input, type radio</td> | ||
| 72 | * <td>JRadioButton</td> | ||
| 73 | * </tr> | ||
| 74 | * <tr> | ||
| 75 | * <td>input, type reset</td> | ||
| 76 | * <td>JButton</td> | ||
| 77 | * </tr> | ||
| 78 | * <tr> | ||
| 79 | * <td>input, type submit</td> | ||
| 80 | * <td>JButton</td> | ||
| 81 | * </tr> | ||
| 82 | * <tr> | ||
| 83 | * <td>input, type text</td> | ||
| 84 | * <td>JTextField</td> | ||
| 85 | * </tr> | ||
| 86 | * <tr> | ||
| 87 | * <td>select, size > 1 or multiple attribute defined</td> | ||
| 88 | * <td>JList in a JScrollPane</td> | ||
| 89 | * </tr> | ||
| 90 | * <tr> | ||
| 91 | * <td>select, size unspecified or 1</td> | ||
| 92 | * <td>JComboBox</td> | ||
| 93 | * </tr> | ||
| 94 | * <tr> | ||
| 95 | * <td>textarea</td> | ||
| 96 | * <td>JTextArea in a JScrollPane</td> | ||
| 97 | * </tr> | ||
| 98 | * <tr> | ||
| 99 | * <td>input, type file</td> | ||
| 100 | * <td>JTextField</td> | ||
| 101 | * </tr> | ||
| 102 | * </table> | ||
| 103 | * | ||
| 104 | * @author Timothy Prinzing | ||
| 105 | * @author Sunita Mani | ||
| 106 | */ | ||
| 107 | public class FormView extends ComponentView implements ActionListener { | ||
| 108 | |||
| 109 | /** | ||
| 110 | * If a value attribute is not specified for a FORM input element | ||
| 111 | * of type "submit", then this default string is used. | ||
| 112 | * | ||
| 113 | * @deprecated As of 1.3, value now comes from UIManager property | ||
| 114 | * FormView.submitButtonText | ||
| 115 | */ | ||
| 116 | @Deprecated | ||
| 117 | public static final String SUBMIT = new String("Submit Query"); | ||
| 118 | /** | ||
| 119 | * If a value attribute is not specified for a FORM input element | ||
| 120 | * of type "reset", then this default string is used. | ||
| 121 | * | ||
| 122 | * @deprecated As of 1.3, value comes from UIManager UIManager property | ||
| 123 | * FormView.resetButtonText | ||
| 124 | */ | ||
| 125 | @Deprecated | ||
| 126 | public static final String RESET = new String("Reset"); | ||
| 127 | |||
| 128 | /** | ||
| 129 | * Document attribute name for storing POST data. JEditorPane.getPostData() | ||
| 130 | * uses the same name, should be kept in sync. | ||
| 131 | */ | ||
| 132 | final static String PostDataProperty = "javax.swing.JEditorPane.postdata"; | ||
| 133 | |||
| 134 | /** | ||
| 135 | * Used to indicate if the maximum span should be the same as the | ||
| 136 | * preferred span. This is used so that the Component's size doesn't | ||
| 137 | * change if there is extra room on a line. The first bit is used for | ||
| 138 | * the X direction, and the second for the y direction. | ||
| 139 | */ | ||
| 140 | private short maxIsPreferred; | ||
| 141 | |||
| 142 | /** | ||
| 143 | * Creates a new FormView object. | ||
| 144 | * | ||
| 145 | * @param elem the element to decorate | ||
| 146 | */ | ||
| 147 | public FormView(Element elem) { | ||
| 148 | super(elem); | ||
| 149 | } | ||
| 150 | |||
| 151 | /** | ||
| 152 | * Create the component. This is basically a | ||
| 153 | * big switch statement based upon the tag type | ||
| 154 | * and html attributes of the associated element. | ||
| 155 | */ | ||
| 156 | protected Component createComponent() { | ||
| 157 | AttributeSet attr = getElement().getAttributes(); | ||
| 158 | HTML.Tag t = (HTML.Tag) | ||
| 159 | attr.getAttribute(StyleConstants.NameAttribute); | ||
| 160 | JComponent c = null; | ||
| 161 | Object model = attr.getAttribute(StyleConstants.ModelAttribute); | ||
| 162 | if (t == HTML.Tag.INPUT) { | ||
| 163 | c = createInputComponent(attr, model); | ||
| 164 | } else if (t == HTML.Tag.SELECT) { | ||
| 165 | |||
| 166 | if (model instanceof OptionListModel) { | ||
| 167 | |||
| 168 | JList list = new JList((ListModel) model); | ||
| 169 | int size = HTML.getIntegerAttributeValue(attr, | ||
| 170 | HTML.Attribute.SIZE, | ||
| 171 | 1); | ||
| 172 | list.setVisibleRowCount(size); | ||
| 173 | list.setSelectionModel((ListSelectionModel)model); | ||
| 174 | c = new JScrollPane(list); | ||
| 175 | } else { | ||
| 176 | c = new JComboBox((ComboBoxModel) model); | ||
| 177 | maxIsPreferred = 3; | ||
| 178 | } | ||
| 179 | } else if (t == HTML.Tag.TEXTAREA) { | ||
| 180 | JTextArea area = new JTextArea((Document) model); | ||
| 181 | int rows = HTML.getIntegerAttributeValue(attr, | ||
| 182 | HTML.Attribute.ROWS, | ||
| 183 | 1); | ||
| 184 | area.setRows(rows); | ||
| 185 | int cols = HTML.getIntegerAttributeValue(attr, | ||
| 186 | HTML.Attribute.COLS, | ||
| 187 | 20); | ||
| 188 | maxIsPreferred = 3; | ||
| 189 | area.setColumns(cols); | ||
| 190 | c = new JScrollPane(area, | ||
| 191 | JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, | ||
| 192 | JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS); | ||
| 193 | } | ||
| 194 | |||
| 195 | if (c != null) { | ||
| 196 | c.setAlignmentY(1.0f); | ||
| 197 | } | ||
| 198 | return c; | ||
| 199 | } | ||
| 200 | |||
| 201 | |||
| 202 | /** | ||
| 203 | * Creates a component for an <INPUT> element based on the | ||
| 204 | * value of the "type" attribute. | ||
| 205 | * | ||
| 206 | * @param set of attributes associated with the <INPUT> element. | ||
| 207 | * @param model the value of the StyleConstants.ModelAttribute | ||
| 208 | * @return the component. | ||
| 209 | */ | ||
| 210 | private JComponent createInputComponent(AttributeSet attr, Object model) { | ||
| 211 | JComponent c = null; | ||
| 212 | String type = (String) attr.getAttribute(HTML.Attribute.TYPE); | ||
| 213 | |||
| 214 | if (type.equals("submit") || type.equals("reset")) { | ||
| 215 | String value = (String) | ||
| 216 | attr.getAttribute(HTML.Attribute.VALUE); | ||
| 217 | if (value == null) { | ||
| 218 | if (type.equals("submit")) { | ||
| 219 | value = UIManager.getString("FormView.submitButtonText"); | ||
| 220 | } else { | ||
| 221 | value = UIManager.getString("FormView.resetButtonText"); | ||
| 222 | } | ||
| 223 | } | ||
| 224 | JButton button = new JButton(value); | ||
| 225 | if (model != null) { | ||
| 226 | button.setModel((ButtonModel)model); | ||
| 227 | button.addActionListener(this); | ||
| 228 | } | ||
| 229 | c = button; | ||
| 230 | maxIsPreferred = 3; | ||
| 231 | } else if (type.equals("image")) { | ||
| 232 | String srcAtt = (String) attr.getAttribute(HTML.Attribute.SRC); | ||
| 233 | JButton button; | ||
| 234 | try { | ||
| 235 | URL base = ((HTMLDocument)getElement().getDocument()).getBase(); | ||
| 236 | URL srcURL = new URL(base, srcAtt); | ||
| 237 | Icon icon = new ImageIcon(srcURL); | ||
| 238 | button = new JButton(icon); | ||
| 239 | } catch (MalformedURLException e) { | ||
| 240 | button = new JButton(srcAtt); | ||
| 241 | } | ||
| 242 | if (model != null) { | ||
| 243 | button.setModel((ButtonModel)model); | ||
| 244 | button.addMouseListener(new MouseEventListener()); | ||
| 245 | } | ||
| 246 | c = button; | ||
| 247 | maxIsPreferred = 3; | ||
| 248 | } else if (type.equals("checkbox")) { | ||
| 249 | c = new JCheckBox(); | ||
| 250 | if (model != null) { | ||
| 251 | ((JCheckBox)c).setModel((JToggleButton.ToggleButtonModel) model); | ||
| 252 | } | ||
| 253 | maxIsPreferred = 3; | ||
| 254 | } else if (type.equals("radio")) { | ||
| 255 | c = new JRadioButton(); | ||
| 256 | if (model != null) { | ||
| 257 | ((JRadioButton)c).setModel((JToggleButton.ToggleButtonModel)model); | ||
| 258 | } | ||
| 259 | maxIsPreferred = 3; | ||
| 260 | } else if (type.equals("text")) { | ||
| 261 | int size = HTML.getIntegerAttributeValue(attr, | ||
| 262 | HTML.Attribute.SIZE, | ||
| 263 | -1); | ||
| 264 | JTextField field; | ||
| 265 | if (size > 0) { | ||
| 266 | field = new JTextField(); | ||
| 267 | field.setColumns(size); | ||
| 268 | } | ||
| 269 | else { | ||
| 270 | field = new JTextField(); | ||
| 271 | field.setColumns(20); | ||
| 272 | } | ||
| 273 | c = field; | ||
| 274 | if (model != null) { | ||
| 275 | field.setDocument((Document) model); | ||
| 276 | } | ||
| 277 | field.addActionListener(this); | ||
| 278 | maxIsPreferred = 3; | ||
| 279 | } else if (type.equals("password")) { | ||
| 280 | JPasswordField field = new JPasswordField(); | ||
| 281 | c = field; | ||
| 282 | if (model != null) { | ||
| 283 | field.setDocument((Document) model); | ||
| 284 | } | ||
| 285 | int size = HTML.getIntegerAttributeValue(attr, | ||
| 286 | HTML.Attribute.SIZE, | ||
| 287 | -1); | ||
| 288 | field.setColumns((size > 0) ? size : 20); | ||
| 289 | field.addActionListener(this); | ||
| 290 | maxIsPreferred = 3; | ||
| 291 | } else if (type.equals("file")) { | ||
| 292 | JTextField field = new JTextField(); | ||
| 293 | if (model != null) { | ||
| 294 | field.setDocument((Document)model); | ||
| 295 | } | ||
| 296 | int size = HTML.getIntegerAttributeValue(attr, HTML.Attribute.SIZE, | ||
| 297 | -1); | ||
| 298 | field.setColumns((size > 0) ? size : 20); | ||
| 299 | JButton browseButton = new JButton(UIManager.getString | ||
| 300 | ("FormView.browseFileButtonText")); | ||
| 301 | Box box = Box.createHorizontalBox(); | ||
| 302 | box.add(field); | ||
| 303 | box.add(Box.createHorizontalStrut(5)); | ||
| 304 | box.add(browseButton); | ||
| 305 | browseButton.addActionListener(new BrowseFileAction( | ||
| 306 | attr, (Document)model)); | ||
| 307 | c = box; | ||
| 308 | maxIsPreferred = 3; | ||
| 309 | } | ||
| 310 | return c; | ||
| 311 | } | ||
| 312 | |||
| 313 | |||
| 314 | /** | ||
| 315 | * Determines the maximum span for this view along an | ||
| 316 | * axis. For certain components, the maximum and preferred span are the | ||
| 317 | * same. For others this will return the value | ||
| 318 | * returned by Component.getMaximumSize along the | ||
| 319 | * axis of interest. | ||
| 320 | * | ||
| 321 | * @param axis may be either View.X_AXIS or View.Y_AXIS | ||
| 322 | * @return the span the view would like to be rendered into >= 0. | ||
| 323 | * Typically the view is told to render into the span | ||
| 324 | * that is returned, although there is no guarantee. | ||
| 325 | * The parent may choose to resize or break the view. | ||
| 326 | * @exception IllegalArgumentException for an invalid axis | ||
| 327 | */ | ||
| 328 | public float getMaximumSpan(int axis) { | ||
| 329 | switch (axis) { | ||
| 330 | case View.X_AXIS: | ||
| 331 | if ((maxIsPreferred & 1) == 1) { | ||
| 332 | super.getMaximumSpan(axis); | ||
| 333 | return getPreferredSpan(axis); | ||
| 334 | } | ||
| 335 | return super.getMaximumSpan(axis); | ||
| 336 | case View.Y_AXIS: | ||
| 337 | if ((maxIsPreferred & 2) == 2) { | ||
| 338 | super.getMaximumSpan(axis); | ||
| 339 | return getPreferredSpan(axis); | ||
| 340 | } | ||
| 341 | return super.getMaximumSpan(axis); | ||
| 342 | default: | ||
| 343 | break; | ||
| 344 | } | ||
| 345 | return super.getMaximumSpan(axis); | ||
| 346 | } | ||
| 347 | |||
| 348 | |||
| 349 | /** | ||
| 350 | * Responsible for processeing the ActionEvent. | ||
| 351 | * If the element associated with the FormView, | ||
| 352 | * has a type of "submit", "reset", "text" or "password" | ||
| 353 | * then the action is processed. In the case of a "submit" | ||
| 354 | * the form is submitted. In the case of a "reset" | ||
| 355 | * the form is reset to its original state. | ||
| 356 | * In the case of "text" or "password", if the | ||
| 357 | * element is the last one of type "text" or "password", | ||
| 358 | * the form is submitted. Otherwise, focus is transferred | ||
| 359 | * to the next component in the form. | ||
| 360 | * | ||
| 361 | * @param evt the ActionEvent. | ||
| 362 | */ | ||
| 363 | public void actionPerformed(ActionEvent evt) { | ||
| 364 | Element element = getElement(); | ||
| 365 | StringBuilder dataBuffer = new StringBuilder(); | ||
| 366 | HTMLDocument doc = (HTMLDocument)getDocument(); | ||
| 367 | AttributeSet attr = element.getAttributes(); | ||
| 368 | |||
| 369 | String type = (String) attr.getAttribute(HTML.Attribute.TYPE); | ||
| 370 | |||
| 371 | if (type.equals("submit")) { | ||
| 372 | getFormData(dataBuffer); | ||
| 373 | submitData(dataBuffer.toString()); | ||
| 374 | } else if (type.equals("reset")) { | ||
| 375 | resetForm(); | ||
| 376 | } else if (type.equals("text") || type.equals("password")) { | ||
| 377 | if (isLastTextOrPasswordField()) { | ||
| 378 | getFormData(dataBuffer); | ||
| 379 | submitData(dataBuffer.toString()); | ||
| 380 | } else { | ||
| 381 | getComponent().transferFocus(); | ||
| 382 | } | ||
| 383 | } | ||
| 384 | } | ||
| 385 | |||
| 386 | |||
| 387 | /** | ||
| 388 | * This method is responsible for submitting the form data. | ||
| 389 | * A thread is forked to undertake the submission. | ||
| 390 | */ | ||
| 391 | protected void submitData(String data) { | ||
| 392 | Element form = getFormElement(); | ||
| 393 | AttributeSet attrs = form.getAttributes(); | ||
| 394 | HTMLDocument doc = (HTMLDocument) form.getDocument(); | ||
| 395 | URL base = doc.getBase(); | ||
| 396 | |||
| 397 | String target = (String) attrs.getAttribute(HTML.Attribute.TARGET); | ||
| 398 | if (target == null) { | ||
| 399 | target = "_self"; | ||
| 400 | } | ||
| 401 | |||
| 402 | String method = (String) attrs.getAttribute(HTML.Attribute.METHOD); | ||
| 403 | if (method == null) { | ||
| 404 | method = "GET"; | ||
| 405 | } | ||
| 406 | method = method.toLowerCase(); | ||
| 407 | boolean isPostMethod = method.equals("post"); | ||
| 408 | if (isPostMethod) { | ||
| 409 | storePostData(doc, target, data); | ||
| 410 | } | ||
| 411 | |||
| 412 | String action = (String) attrs.getAttribute(HTML.Attribute.ACTION); | ||
| 413 | URL actionURL; | ||
| 414 | try { | ||
| 415 | actionURL = (action == null) | ||
| 416 | ? new URL(base.getProtocol(), base.getHost(), | ||
| 417 | base.getPort(), base.getFile()) | ||
| 418 | : new URL(base, action); | ||
| 419 | if (!isPostMethod) { | ||
| 420 | String query = data.toString(); | ||
| 421 | actionURL = new URL(actionURL + "?" + query); | ||
| 422 | } | ||
| 423 | } catch (MalformedURLException e) { | ||
| 424 | actionURL = null; | ||
| 425 | } | ||
| 426 | final JEditorPane c = (JEditorPane) getContainer(); | ||
| 427 | HTMLEditorKit kit = (HTMLEditorKit) c.getEditorKit(); | ||
| 428 | |||
| 429 | FormSubmitEvent formEvent = null; | ||
| 430 | if (!kit.isAutoFormSubmission() || doc.isFrameDocument()) { | ||
| 431 | FormSubmitEvent.MethodType methodType = isPostMethod | ||
| 432 | ? FormSubmitEvent.MethodType.POST | ||
| 433 | : FormSubmitEvent.MethodType.GET; | ||
| 434 | formEvent = new FormSubmitEvent( | ||
| 435 | FormView.this, HyperlinkEvent.EventType.ACTIVATED, | ||
| 436 | actionURL, form, target, methodType, data); | ||
| 437 | |||
| 438 | } | ||
| 439 | // setPage() may take significant time so schedule it to run later. | ||
| 440 | final FormSubmitEvent fse = formEvent; | ||
| 441 | final URL url = actionURL; | ||
| 442 | SwingUtilities.invokeLater(new Runnable() { | ||
| 443 | public void run() { | ||
| 444 | if (fse != null) { | ||
| 445 | c.fireHyperlinkUpdate(fse); | ||
| 446 | } else { | ||
| 447 | try { | ||
| 448 | c.setPage(url); | ||
| 449 | } catch (IOException e) { | ||
| 450 | UIManager.getLookAndFeel().provideErrorFeedback(c); | ||
| 451 | } | ||
| 452 | } | ||
| 453 | } | ||
| 454 | }); | ||
| 455 | } | ||
| 456 | |||
| 457 | private void storePostData(HTMLDocument doc, String target, String data) { | ||
| 458 | |||
| 459 | /* POST data is stored into the document property named by constant | ||
| 460 | * PostDataProperty from where it is later retrieved by method | ||
| 461 | * JEditorPane.getPostData(). If the current document is in a frame, | ||
| 462 | * the data is initially put into the toplevel (frameset) document | ||
| 463 | * property (named <PostDataProperty>.<Target frame name>). It is the | ||
| 464 | * responsibility of FrameView which updates the target frame | ||
| 465 | * to move data from the frameset document property into the frame | ||
| 466 | * document property. | ||
| 467 | */ | ||
| 468 | |||
| 469 | Document propDoc = doc; | ||
| 470 | String propName = PostDataProperty; | ||
| 471 | |||
| 472 | if (doc.isFrameDocument()) { | ||
| 473 | // find the top-most JEditorPane holding the frameset view. | ||
| 474 | FrameView.FrameEditorPane p = | ||
| 475 | (FrameView.FrameEditorPane) getContainer(); | ||
| 476 | FrameView v = p.getFrameView(); | ||
| 477 | JEditorPane c = v.getOutermostJEditorPane(); | ||
| 478 | if (c != null) { | ||
| 479 | propDoc = c.getDocument(); | ||
| 480 | propName += ("." + target); | ||
| 481 | } | ||
| 482 | } | ||
| 483 | |||
| 484 | propDoc.putProperty(propName, data); | ||
| 485 | } | ||
| 486 | |||
| 487 | /** | ||
| 488 | * MouseEventListener class to handle form submissions when | ||
| 489 | * an input with type equal to image is clicked on. | ||
| 490 | * A MouseListener is necessary since along with the image | ||
| 491 | * data the coordinates associated with the mouse click | ||
| 492 | * need to be submitted. | ||
| 493 | */ | ||
| 494 | protected class MouseEventListener extends MouseAdapter { | ||
| 495 | |||
| 496 | public void mouseReleased(MouseEvent evt) { | ||
| 497 | String imageData = getImageData(evt.getPoint()); | ||
| 498 | imageSubmit(imageData); | ||
| 499 | } | ||
| 500 | } | ||
| 501 | |||
| 502 | /** | ||
| 503 | * This method is called to submit a form in response | ||
| 504 | * to a click on an image -- an <INPUT> form | ||
| 505 | * element of type "image". | ||
| 506 | * | ||
| 507 | * @param imageData the mouse click coordinates. | ||
| 508 | */ | ||
| 509 | protected void imageSubmit(String imageData) { | ||
| 510 | |||
| 511 | StringBuilder dataBuffer = new StringBuilder(); | ||
| 512 | Element elem = getElement(); | ||
| 513 | HTMLDocument hdoc = (HTMLDocument)elem.getDocument(); | ||
| 514 | getFormData(dataBuffer); | ||
| 515 | if (dataBuffer.length() > 0) { | ||
| 516 | dataBuffer.append('&'); | ||
| 517 | } | ||
| 518 | dataBuffer.append(imageData); | ||
| 519 | submitData(dataBuffer.toString()); | ||
| 520 | return; | ||
| 521 | } | ||
| 522 | |||
| 523 | /** | ||
| 524 | * Extracts the value of the name attribute | ||
| 525 | * associated with the input element of type | ||
| 526 | * image. If name is defined it is encoded using | ||
| 527 | * the URLEncoder.encode() method and the | ||
| 528 | * image data is returned in the following format: | ||
| 529 | * name + ".x" +"="+ x +"&"+ name +".y"+"="+ y | ||
| 530 | * otherwise, | ||
| 531 | * "x="+ x +"&y="+ y | ||
| 532 | * | ||
| 533 | * @param point associated with the mouse click. | ||
| 534 | * @return the image data. | ||
| 535 | */ | ||
| 536 | private String getImageData(Point point) { | ||
| 537 | |||
| 538 | String mouseCoords = point.x + ":" + point.y; | ||
| 539 | int sep = mouseCoords.indexOf(':'); | ||
| 540 | String x = mouseCoords.substring(0, sep); | ||
| 541 | String y = mouseCoords.substring(++sep); | ||
| 542 | String name = (String) getElement().getAttributes().getAttribute(HTML.Attribute.NAME); | ||
| 543 | |||
| 544 | String data; | ||
| 545 | if (name == null || name.equals("")) { | ||
| 546 | data = "x="+ x +"&y="+ y; | ||
| 547 | } else { | ||
| 548 | name = URLEncoder.encode(name); | ||
| 549 | data = name + ".x" +"="+ x +"&"+ name +".y"+"="+ y; | ||
| 550 | } | ||
| 551 | return data; | ||
| 552 | } | ||
| 553 | |||
| 554 | |||
| 555 | /** | ||
| 556 | * The following methods provide functionality required to | ||
| 557 | * iterate over a the elements of the form and in the case | ||
| 558 | * of a form submission, extract the data from each model | ||
| 559 | * that is associated with each form element, and in the | ||
| 560 | * case of reset, reinitialize the each model to its | ||
| 561 | * initial state. | ||
| 562 | */ | ||
| 563 | |||
| 564 | |||
| 565 | /** | ||
| 566 | * Returns the Element representing the <code>FORM</code>. | ||
| 567 | */ | ||
| 568 | private Element getFormElement() { | ||
| 569 | Element elem = getElement(); | ||
| 570 | while (elem != null) { | ||
| 571 | if (elem.getAttributes().getAttribute | ||
| 572 | (StyleConstants.NameAttribute) == HTML.Tag.FORM) { | ||
| 573 | return elem; | ||
| 574 | } | ||
| 575 | elem = elem.getParentElement(); | ||
| 576 | } | ||
| 577 | return null; | ||
| 578 | } | ||
| 579 | |||
| 580 | /** | ||
| 581 | * Iterates over the | ||
| 582 | * element hierarchy, extracting data from the | ||
| 583 | * models associated with the relevant form elements. | ||
| 584 | * "Relevant" means the form elements that are part | ||
| 585 | * of the same form whose element triggered the submit | ||
| 586 | * action. | ||
| 587 | * | ||
| 588 | * @param buffer the buffer that contains that data to submit | ||
| 589 | * @param targetElement the element that triggered the | ||
| 590 | * form submission | ||
| 591 | */ | ||
| 592 | private void getFormData(StringBuilder buffer) { | ||
| 593 | Element formE = getFormElement(); | ||
| 594 | if (formE != null) { | ||
| 595 | ElementIterator it = new ElementIterator(formE); | ||
| 596 | Element next; | ||
| 597 | |||
| 598 | while ((next = it.next()) != null) { | ||
| 599 | if (isControl(next)) { | ||
| 600 | String type = (String)next.getAttributes().getAttribute | ||
| 601 | (HTML.Attribute.TYPE); | ||
| 602 | |||
| 603 | if (type != null && type.equals("submit") && | ||
| 604 | next != getElement()) { | ||
| 605 | // do nothing - this submit isnt the trigger | ||
| 606 | } else if (type == null || !type.equals("image")) { | ||
| 607 | // images only result in data if they triggered | ||
| 608 | // the submit and they require that the mouse click | ||
| 609 | // coords be appended to the data. Hence its | ||
| 610 | // processing is handled by the view. | ||
| 611 | loadElementDataIntoBuffer(next, buffer); | ||
| 612 | } | ||
| 613 | } | ||
| 614 | } | ||
| 615 | } | ||
| 616 | } | ||
| 617 | |||
| 618 | /** | ||
| 619 | * Loads the data | ||
| 620 | * associated with the element into the buffer. | ||
| 621 | * The format in which data is appended depends | ||
| 622 | * on the type of the form element. Essentially | ||
| 623 | * data is loaded in name/value pairs. | ||
| 624 | * | ||
| 625 | */ | ||
| 626 | private void loadElementDataIntoBuffer(Element elem, StringBuilder buffer) { | ||
| 627 | |||
| 628 | AttributeSet attr = elem.getAttributes(); | ||
| 629 | String name = (String)attr.getAttribute(HTML.Attribute.NAME); | ||
| 630 | if (name == null) { | ||
| 631 | return; | ||
| 632 | } | ||
| 633 | String value = null; | ||
| 634 | HTML.Tag tag = (HTML.Tag)elem.getAttributes().getAttribute | ||
| 635 | (StyleConstants.NameAttribute); | ||
| 636 | |||
| 637 | if (tag == HTML.Tag.INPUT) { | ||
| 638 | value = getInputElementData(attr); | ||
| 639 | } else if (tag == HTML.Tag.TEXTAREA) { | ||
| 640 | value = getTextAreaData(attr); | ||
| 641 | } else if (tag == HTML.Tag.SELECT) { | ||
| 642 | loadSelectData(attr, buffer); | ||
| 643 | } | ||
| 644 | |||
| 645 | if (name != null && value != null) { | ||
| 646 | appendBuffer(buffer, name, value); | ||
| 647 | } | ||
| 648 | } | ||
| 649 | |||
| 650 | |||
| 651 | /** | ||
| 652 | * Returns the data associated with an <INPUT> form | ||
| 653 | * element. The value of "type" attributes is | ||
| 654 | * used to determine the type of the model associated | ||
| 655 | * with the element and then the relevant data is | ||
| 656 | * extracted. | ||
| 657 | */ | ||
| 658 | private String getInputElementData(AttributeSet attr) { | ||
| 659 | |||
| 660 | Object model = attr.getAttribute(StyleConstants.ModelAttribute); | ||
| 661 | String type = (String) attr.getAttribute(HTML.Attribute.TYPE); | ||
| 662 | String value = null; | ||
| 663 | |||
| 664 | if (type.equals("text") || type.equals("password")) { | ||
| 665 | Document doc = (Document)model; | ||
| 666 | try { | ||
| 667 | value = doc.getText(0, doc.getLength()); | ||
| 668 | } catch (BadLocationException e) { | ||
| 669 | value = null; | ||
| 670 | } | ||
| 671 | } else if (type.equals("submit") || type.equals("hidden")) { | ||
| 672 | value = (String) attr.getAttribute(HTML.Attribute.VALUE); | ||
| 673 | if (value == null) { | ||
| 674 | value = ""; | ||
| 675 | } | ||
| 676 | } else if (type.equals("radio") || type.equals("checkbox")) { | ||
| 677 | ButtonModel m = (ButtonModel)model; | ||
| 678 | if (m.isSelected()) { | ||
| 679 | value = (String) attr.getAttribute(HTML.Attribute.VALUE); | ||
| 680 | if (value == null) { | ||
| 681 | value = "on"; | ||
| 682 | } | ||
| 683 | } | ||
| 684 | } else if (type.equals("file")) { | ||
| 685 | Document doc = (Document)model; | ||
| 686 | String path; | ||
| 687 | |||
| 688 | try { | ||
| 689 | path = doc.getText(0, doc.getLength()); | ||
| 690 | } catch (BadLocationException e) { | ||
| 691 | path = null; | ||
| 692 | } | ||
| 693 | if (path != null && path.length() > 0) { | ||
| 694 | value = path; | ||
| 695 | } | ||
| 696 | } | ||
| 697 | return value; | ||
| 698 | } | ||
| 699 | |||
| 700 | /** | ||
| 701 | * Returns the data associated with the <TEXTAREA> form | ||
| 702 | * element. This is done by getting the text stored in the | ||
| 703 | * Document model. | ||
| 704 | */ | ||
| 705 | private String getTextAreaData(AttributeSet attr) { | ||
| 706 | Document doc = (Document)attr.getAttribute(StyleConstants.ModelAttribute); | ||
| 707 | try { | ||
| 708 | return doc.getText(0, doc.getLength()); | ||
| 709 | } catch (BadLocationException e) { | ||
| 710 | return null; | ||
| 711 | } | ||
| 712 | } | ||
| 713 | |||
| 714 | |||
| 715 | /** | ||
| 716 | * Loads the buffer with the data associated with the Select | ||
| 717 | * form element. Basically, only items that are selected | ||
| 718 | * and have their name attribute set are added to the buffer. | ||
| 719 | */ | ||
| 720 | private void loadSelectData(AttributeSet attr, StringBuilder buffer) { | ||
| 721 | |||
| 722 | String name = (String)attr.getAttribute(HTML.Attribute.NAME); | ||
| 723 | if (name == null) { | ||
| 724 | return; | ||
| 725 | } | ||
| 726 | Object m = attr.getAttribute(StyleConstants.ModelAttribute); | ||
| 727 | if (m instanceof OptionListModel) { | ||
| 728 | OptionListModel model = (OptionListModel)m; | ||
| 729 | |||
| 730 | for (int i = 0; i < model.getSize(); i++) { | ||
| 731 | if (model.isSelectedIndex(i)) { | ||
| 732 | Option option = (Option) model.getElementAt(i); | ||
| 733 | appendBuffer(buffer, name, option.getValue()); | ||
| 734 | } | ||
| 735 | } | ||
| 736 | } else if (m instanceof ComboBoxModel) { | ||
| 737 | ComboBoxModel model = (ComboBoxModel)m; | ||
| 738 | Option option = (Option)model.getSelectedItem(); | ||
| 739 | if (option != null) { | ||
| 740 | appendBuffer(buffer, name, option.getValue()); | ||
| 741 | } | ||
| 742 | } | ||
| 743 | } | ||
| 744 | |||
| 745 | /** | ||
| 746 | * Appends name / value pairs into the | ||
| 747 | * buffer. Both names and values are encoded using the | ||
| 748 | * URLEncoder.encode() method before being added to the | ||
| 749 | * buffer. | ||
| 750 | */ | ||
| 751 | private void appendBuffer(StringBuilder buffer, String name, String value) { | ||
| 752 | if (buffer.length() > 0) { | ||
| 753 | buffer.append('&'); | ||
| 754 | } | ||
| 755 | String encodedName = URLEncoder.encode(name); | ||
| 756 | buffer.append(encodedName); | ||
| 757 | buffer.append('='); | ||
| 758 | String encodedValue = URLEncoder.encode(value); | ||
| 759 | buffer.append(encodedValue); | ||
| 760 | } | ||
| 761 | |||
| 762 | /** | ||
| 763 | * Returns true if the Element <code>elem</code> represents a control. | ||
| 764 | */ | ||
| 765 | private boolean isControl(Element elem) { | ||
| 766 | return elem.isLeaf(); | ||
| 767 | } | ||
| 768 | |||
| 769 | /** | ||
| 770 | * Iterates over the element hierarchy to determine if | ||
| 771 | * the element parameter, which is assumed to be an | ||
| 772 | * <INPUT> element of type password or text, is the last | ||
| 773 | * one of either kind, in the form to which it belongs. | ||
| 774 | */ | ||
| 775 | boolean isLastTextOrPasswordField() { | ||
| 776 | Element parent = getFormElement(); | ||
| 777 | Element elem = getElement(); | ||
| 778 | |||
| 779 | if (parent != null) { | ||
| 780 | ElementIterator it = new ElementIterator(parent); | ||
| 781 | Element next; | ||
| 782 | boolean found = false; | ||
| 783 | |||
| 784 | while ((next = it.next()) != null) { | ||
| 785 | if (next == elem) { | ||
| 786 | found = true; | ||
| 787 | } | ||
| 788 | else if (found && isControl(next)) { | ||
| 789 | AttributeSet elemAttr = next.getAttributes(); | ||
| 790 | |||
| 791 | if (HTMLDocument.matchNameAttribute | ||
| 792 | (elemAttr, HTML.Tag.INPUT)) { | ||
| 793 | String type = (String)elemAttr.getAttribute | ||
| 794 | (HTML.Attribute.TYPE); | ||
| 795 | |||
| 796 | if ("text".equals(type) || "password".equals(type)) { | ||
| 797 | return false; | ||
| 798 | } | ||
| 799 | } | ||
| 800 | } | ||
| 801 | } | ||
| 802 | } | ||
| 803 | return true; | ||
| 804 | } | ||
| 805 | |||
| 806 | /** | ||
| 807 | * Resets the form | ||
| 808 | * to its initial state by reinitializing the models | ||
| 809 | * associated with each form element to their initial | ||
| 810 | * values. | ||
| 811 | * | ||
| 812 | * param elem the element that triggered the reset | ||
| 813 | */ | ||
| 814 | void resetForm() { | ||
| 815 | Element parent = getFormElement(); | ||
| 816 | |||
| 817 | if (parent != null) { | ||
| 818 | ElementIterator it = new ElementIterator(parent); | ||
| 819 | Element next; | ||
| 820 | |||
| 821 | while((next = it.next()) != null) { | ||
| 822 | if (isControl(next)) { | ||
| 823 | AttributeSet elemAttr = next.getAttributes(); | ||
| 824 | Object m = elemAttr.getAttribute(StyleConstants. | ||
| 825 | ModelAttribute); | ||
| 826 | if (m instanceof TextAreaDocument) { | ||
| 827 | TextAreaDocument doc = (TextAreaDocument)m; | ||
| 828 | doc.reset(); | ||
| 829 | } else if (m instanceof PlainDocument) { | ||
| 830 | try { | ||
| 831 | PlainDocument doc = (PlainDocument)m; | ||
| 832 | doc.remove(0, doc.getLength()); | ||
| 833 | if (HTMLDocument.matchNameAttribute | ||
| 834 | (elemAttr, HTML.Tag.INPUT)) { | ||
| 835 | String value = (String)elemAttr. | ||
| 836 | getAttribute(HTML.Attribute.VALUE); | ||
| 837 | if (value != null) { | ||
| 838 | doc.insertString(0, value, null); | ||
| 839 | } | ||
| 840 | } | ||
| 841 | } catch (BadLocationException e) { | ||
| 842 | } | ||
| 843 | } else if (m instanceof OptionListModel) { | ||
| 844 | OptionListModel model = (OptionListModel) m; | ||
| 845 | int size = model.getSize(); | ||
| 846 | for (int i = 0; i < size; i++) { | ||
| 847 | model.removeIndexInterval(i, i); | ||
| 848 | } | ||
| 849 | BitSet selectionRange = model.getInitialSelection(); | ||
| 850 | for (int i = 0; i < selectionRange.size(); i++) { | ||
| 851 | if (selectionRange.get(i)) { | ||
| 852 | model.addSelectionInterval(i, i); | ||
| 853 | } | ||
| 854 | } | ||
| 855 | } else if (m instanceof OptionComboBoxModel) { | ||
| 856 | OptionComboBoxModel model = (OptionComboBoxModel) m; | ||
| 857 | Option option = model.getInitialSelection(); | ||
| 858 | if (option != null) { | ||
| 859 | model.setSelectedItem(option); | ||
| 860 | } | ||
| 861 | } else if (m instanceof JToggleButton.ToggleButtonModel) { | ||
| 862 | boolean checked = ((String)elemAttr.getAttribute | ||
| 863 | (HTML.Attribute.CHECKED) != null); | ||
| 864 | JToggleButton.ToggleButtonModel model = | ||
| 865 | (JToggleButton.ToggleButtonModel)m; | ||
| 866 | model.setSelected(checked); | ||
| 867 | } | ||
| 868 | } | ||
| 869 | } | ||
| 870 | } | ||
| 871 | } | ||
| 872 | |||
| 873 | |||
| 874 | /** | ||
| 875 | * BrowseFileAction is used for input type == file. When the user | ||
| 876 | * clicks the button a JFileChooser is brought up allowing the user | ||
| 877 | * to select a file in the file system. The resulting path to the selected | ||
| 878 | * file is set in the text field (actually an instance of Document). | ||
| 879 | */ | ||
| 880 | private class BrowseFileAction implements ActionListener { | ||
| 881 | private AttributeSet attrs; | ||
| 882 | private Document model; | ||
| 883 | |||
| 884 | BrowseFileAction(AttributeSet attrs, Document model) { | ||
| 885 | this.attrs = attrs; | ||
| 886 | this.model = model; | ||
| 887 | } | ||
| 888 | |||
| 889 | public void actionPerformed(ActionEvent ae) { | ||
| 890 | // PENDING: When mime support is added to JFileChooser use the | ||
| 891 | // accept value of attrs. | ||
| 892 | JFileChooser fc = new JFileChooser(); | ||
| 893 | fc.setMultiSelectionEnabled(false); | ||
| 894 | if (fc.showOpenDialog(getContainer()) == | ||
| 895 | JFileChooser.APPROVE_OPTION) { | ||
| 896 | File selected = fc.getSelectedFile(); | ||
| 897 | |||
| 898 | if (selected != null) { | ||
| 899 | try { | ||
| 900 | if (model.getLength() > 0) { | ||
| 901 | model.remove(0, model.getLength()); | ||
| 902 | } | ||
| 903 | model.insertString(0, selected.getPath(), null); | ||
| 904 | } catch (BadLocationException ble) {} | ||
| 905 | } | ||
| 906 | } | ||
| 907 | } | ||
| 908 | } | ||
| 909 | } | ||