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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 | +} | |