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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | package javax.swing.text.html; | ||
| 26 | |||
| 27 | import java.awt.*; | ||
| 28 | import java.awt.event.*; | ||
| 29 | import java.io.*; | ||
| 30 | import java.net.MalformedURLException; | ||
| 31 | import java.net.URL; | ||
| 32 | import javax.swing.text.*; | ||
| 33 | import javax.swing.*; | ||
| 34 | import javax.swing.border.*; | ||
| 35 | import javax.swing.event.*; | ||
| 36 | import java.util.*; | ||
| 37 | |||
| 38 | /** | ||
| 39 | * HiddenTagView subclasses EditableView to contain a JTextField showing | ||
| 40 | * the element name. When the textfield is edited the element name is | ||
| 41 | * reset. As this inherits from EditableView if the JTextComponent is | ||
| 42 | * not editable, the textfield will not be visible. | ||
| 43 | * | ||
| 44 | * @author Scott Violet | ||
| 45 | */ | ||
| 46 | class HiddenTagView extends EditableView implements DocumentListener { | ||
| 47 | HiddenTagView(Element e) { | ||
| 48 | super(e); | ||
| 49 | yAlign = 1; | ||
| 50 | } | ||
| 51 | |||
| 52 | protected Component createComponent() { | ||
| 53 | JTextField tf = new JTextField(getElement().getName()); | ||
| 54 | Document doc = getDocument(); | ||
| 55 | Font font; | ||
| 56 | if (doc instanceof StyledDocument) { | ||
| 57 | font = ((StyledDocument)doc).getFont(getAttributes()); | ||
| 58 | tf.setFont(font); | ||
| 59 | } | ||
| 60 | else { | ||
| 61 | font = tf.getFont(); | ||
| 62 | } | ||
| 63 | tf.getDocument().addDocumentListener(this); | ||
| 64 | updateYAlign(font); | ||
| 65 | |||
| 66 | // Create a panel to wrap the textfield so that the textfields | ||
| 67 | // laf border shows through. | ||
| 68 | JPanel panel = new JPanel(new BorderLayout()); | ||
| 69 | panel.setBackground(null); | ||
| 70 | if (isEndTag()) { | ||
| 71 | panel.setBorder(EndBorder); | ||
| 72 | } | ||
| 73 | else { | ||
| 74 | panel.setBorder(StartBorder); | ||
| 75 | } | ||
| 76 | panel.add(tf); | ||
| 77 | return panel; | ||
| 78 | } | ||
| 79 | |||
| 80 | public float getAlignment(int axis) { | ||
| 81 | if (axis == View.Y_AXIS) { | ||
| 82 | return yAlign; | ||
| 83 | } | ||
| 84 | return 0.5f; | ||
| 85 | } | ||
| 86 | |||
| 87 | public float getMinimumSpan(int axis) { | ||
| 88 | if (axis == View.X_AXIS && isVisible()) { | ||
| 89 | // Default to preferred. | ||
| 90 | return Math.max(30, super.getPreferredSpan(axis)); | ||
| 91 | } | ||
| 92 | return super.getMinimumSpan(axis); | ||
| 93 | } | ||
| 94 | |||
| 95 | public float getPreferredSpan(int axis) { | ||
| 96 | if (axis == View.X_AXIS && isVisible()) { | ||
| 97 | return Math.max(30, super.getPreferredSpan(axis)); | ||
| 98 | } | ||
| 99 | return super.getPreferredSpan(axis); | ||
| 100 | } | ||
| 101 | |||
| 102 | public float getMaximumSpan(int axis) { | ||
| 103 | if (axis == View.X_AXIS && isVisible()) { | ||
| 104 | // Default to preferred. | ||
| 105 | return Math.max(30, super.getMaximumSpan(axis)); | ||
| 106 | } | ||
| 107 | return super.getMaximumSpan(axis); | ||
| 108 | } | ||
| 109 | |||
| 110 | // DocumentListener methods | ||
| 111 | public void insertUpdate(DocumentEvent e) { | ||
| 112 | updateModelFromText(); | ||
| 113 | } | ||
| 114 | |||
| 115 | public void removeUpdate(DocumentEvent e) { | ||
| 116 | updateModelFromText(); | ||
| 117 | } | ||
| 118 | |||
| 119 | public void changedUpdate(DocumentEvent e) { | ||
| 120 | updateModelFromText(); | ||
| 121 | } | ||
| 122 | |||
| 123 | // View method | ||
| 124 | public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) { | ||
| 125 | if (!isSettingAttributes) { | ||
| 126 | setTextFromModel(); | ||
| 127 | } | ||
| 128 | } | ||
| 129 | |||
| 130 | // local methods | ||
| 131 | |||
| 132 | void updateYAlign(Font font) { | ||
| 133 | Container c = getContainer(); | ||
| 134 | FontMetrics fm = (c != null) ? c.getFontMetrics(font) : | ||
| 135 | Toolkit.getDefaultToolkit().getFontMetrics(font); | ||
| 136 | float h = fm.getHeight(); | ||
| 137 | float d = fm.getDescent(); | ||
| 138 | yAlign = (h > 0) ? (h - d) / h : 0; | ||
| 139 | } | ||
| 140 | |||
| 141 | void resetBorder() { | ||
| 142 | Component comp = getComponent(); | ||
| 143 | |||
| 144 | if (comp != null) { | ||
| 145 | if (isEndTag()) { | ||
| 146 | ((JPanel)comp).setBorder(EndBorder); | ||
| 147 | } | ||
| 148 | else { | ||
| 149 | ((JPanel)comp).setBorder(StartBorder); | ||
| 150 | } | ||
| 151 | } | ||
| 152 | } | ||
| 153 | |||
| 154 | /** | ||
| 155 | * This resets the text on the text component we created to match | ||
| 156 | * that of the AttributeSet for the Element we represent. | ||
| 157 | * <p>If this is invoked on the event dispatching thread, this | ||
| 158 | * directly invokes <code>_setTextFromModel</code>, otherwise | ||
| 159 | * <code>SwingUtilities.invokeLater</code> is used to schedule execution | ||
| 160 | * of <code>_setTextFromModel</code>. | ||
| 161 | */ | ||
| 162 | void setTextFromModel() { | ||
| 163 | if (SwingUtilities.isEventDispatchThread()) { | ||
| 164 | _setTextFromModel(); | ||
| 165 | } | ||
| 166 | else { | ||
| 167 | SwingUtilities.invokeLater(new Runnable() { | ||
| 168 | public void run() { | ||
| 169 | _setTextFromModel(); | ||
| 170 | } | ||
| 171 | }); | ||
| 172 | } | ||
| 173 | } | ||
| 174 | |||
| 175 | /** | ||
| 176 | * This resets the text on the text component we created to match | ||
| 177 | * that of the AttributeSet for the Element we represent. | ||
| 178 | */ | ||
| 179 | void _setTextFromModel() { | ||
| 180 | Document doc = getDocument(); | ||
| 181 | try { | ||
| 182 | isSettingAttributes = true; | ||
| 183 | if (doc instanceof AbstractDocument) { | ||
| 184 | ((AbstractDocument)doc).readLock(); | ||
| 185 | } | ||
| 186 | JTextComponent text = getTextComponent(); | ||
| 187 | if (text != null) { | ||
| 188 | text.setText(getRepresentedText()); | ||
| 189 | resetBorder(); | ||
| 190 | Container host = getContainer(); | ||
| 191 | if (host != null) { | ||
| 192 | preferenceChanged(this, true, true); | ||
| 193 | host.repaint(); | ||
| 194 | } | ||
| 195 | } | ||
| 196 | } | ||
| 197 | finally { | ||
| 198 | isSettingAttributes = false; | ||
| 199 | if (doc instanceof AbstractDocument) { | ||
| 200 | ((AbstractDocument)doc).readUnlock(); | ||
| 201 | } | ||
| 202 | } | ||
| 203 | } | ||
| 204 | |||
| 205 | /** | ||
| 206 | * This copies the text from the text component we've created | ||
| 207 | * to the Element's AttributeSet we represent. | ||
| 208 | * <p>If this is invoked on the event dispatching thread, this | ||
| 209 | * directly invokes <code>_updateModelFromText</code>, otherwise | ||
| 210 | * <code>SwingUtilities.invokeLater</code> is used to schedule execution | ||
| 211 | * of <code>_updateModelFromText</code>. | ||
| 212 | */ | ||
| 213 | void updateModelFromText() { | ||
| 214 | if (!isSettingAttributes) { | ||
| 215 | if (SwingUtilities.isEventDispatchThread()) { | ||
| 216 | _updateModelFromText(); | ||
| 217 | } | ||
| 218 | else { | ||
| 219 | SwingUtilities.invokeLater(new Runnable() { | ||
| 220 | public void run() { | ||
| 221 | _updateModelFromText(); | ||
| 222 | } | ||
| 223 | }); | ||
| 224 | } | ||
| 225 | } | ||
| 226 | } | ||
| 227 | |||
| 228 | /** | ||
| 229 | * This copies the text from the text component we've created | ||
| 230 | * to the Element's AttributeSet we represent. | ||
| 231 | */ | ||
| 232 | void _updateModelFromText() { | ||
| 233 | Document doc = getDocument(); | ||
| 234 | Object name = getElement().getAttributes().getAttribute | ||
| 235 | (StyleConstants.NameAttribute); | ||
| 236 | if ((name instanceof HTML.UnknownTag) && | ||
| 237 | (doc instanceof StyledDocument)) { | ||
| 238 | SimpleAttributeSet sas = new SimpleAttributeSet(); | ||
| 239 | JTextComponent textComponent = getTextComponent(); | ||
| 240 | if (textComponent != null) { | ||
| 241 | String text = textComponent.getText(); | ||
| 242 | isSettingAttributes = true; | ||
| 243 | try { | ||
| 244 | sas.addAttribute(StyleConstants.NameAttribute, | ||
| 245 | new HTML.UnknownTag(text)); | ||
| 246 | ((StyledDocument)doc).setCharacterAttributes | ||
| 247 | (getStartOffset(), getEndOffset() - | ||
| 248 | getStartOffset(), sas, false); | ||
| 249 | } | ||
| 250 | finally { | ||
| 251 | isSettingAttributes = false; | ||
| 252 | } | ||
| 253 | } | ||
| 254 | } | ||
| 255 | } | ||
| 256 | |||
| 257 | JTextComponent getTextComponent() { | ||
| 258 | Component comp = getComponent(); | ||
| 259 | |||
| 260 | return (comp == null) ? null : (JTextComponent)((Container)comp). | ||
| 261 | getComponent(0); | ||
| 262 | } | ||
| 263 | |||
| 264 | String getRepresentedText() { | ||
| 265 | String retValue = getElement().getName(); | ||
| 266 | return (retValue == null) ? "" : retValue; | ||
| 267 | } | ||
| 268 | |||
| 269 | boolean isEndTag() { | ||
| 270 | AttributeSet as = getElement().getAttributes(); | ||
| 271 | if (as != null) { | ||
| 272 | Object end = as.getAttribute(HTML.Attribute.ENDTAG); | ||
| 273 | if (end != null && (end instanceof String) && | ||
| 274 | ((String)end).equals("true")) { | ||
| 275 | return true; | ||
| 276 | } | ||
| 277 | } | ||
| 278 | return false; | ||
| 279 | } | ||
| 280 | |||
| 281 | /** Alignment along the y axis, based on the font of the textfield. */ | ||
| 282 | float yAlign; | ||
| 283 | /** Set to true when setting attributes. */ | ||
| 284 | boolean isSettingAttributes; | ||
| 285 | |||
| 286 | |||
| 287 | // Following are for Borders that used for Unknown tags and comments. | ||
| 288 | // | ||
| 289 | // Border defines | ||
| 290 | static final int circleR = 3; | ||
| 291 | static final int circleD = circleR * 2; | ||
| 292 | static final int tagSize = 6; | ||
| 293 | static final int padding = 3; | ||
| 294 | static final Color UnknownTagBorderColor = Color.black; | ||
| 295 | static final Border StartBorder = new StartTagBorder(); | ||
| 296 | static final Border EndBorder = new EndTagBorder(); | ||
| 297 | |||
| 298 | |||
| 299 | static class StartTagBorder implements Border, Serializable { | ||
| 300 | public void paintBorder(Component c, Graphics g, int x, int y, | ||
| 301 | int width, int height) { | ||
| 302 | g.setColor(UnknownTagBorderColor); | ||
| 303 | x += padding; | ||
| 304 | width -= (padding * 2); | ||
| 305 | g.drawLine(x, y + circleR, | ||
| 306 | x, y + height - circleR); | ||
| 307 | g.drawArc(x, y + height - circleD - 1, | ||
| 308 | circleD, circleD, 180, 90); | ||
| 309 | g.drawArc(x, y, circleD, circleD, 90, 90); | ||
| 310 | g.drawLine(x + circleR, y, x + width - tagSize, y); | ||
| 311 | g.drawLine(x + circleR, y + height - 1, | ||
| 312 | x + width - tagSize, y + height - 1); | ||
| 313 | |||
| 314 | g.drawLine(x + width - tagSize, y, | ||
| 315 | x + width - 1, y + height / 2); | ||
| 316 | g.drawLine(x + width - tagSize, y + height, | ||
| 317 | x + width - 1, y + height / 2); | ||
| 318 | } | ||
| 319 | |||
| 320 | public Insets getBorderInsets(Component c) { | ||
| 321 | return new Insets(2, 2 + padding, 2, tagSize + 2 + padding); | ||
| 322 | } | ||
| 323 | |||
| 324 | public boolean isBorderOpaque() { | ||
| 325 | return false; | ||
| 326 | } | ||
| 327 | } // End of class HiddenTagView.StartTagBorder | ||
| 328 | |||
| 329 | |||
| 330 | static class EndTagBorder implements Border, Serializable { | ||
| 331 | public void paintBorder(Component c, Graphics g, int x, int y, | ||
| 332 | int width, int height) { | ||
| 333 | g.setColor(UnknownTagBorderColor); | ||
| 334 | x += padding; | ||
| 335 | width -= (padding * 2); | ||
| 336 | g.drawLine(x + width - 1, y + circleR, | ||
| 337 | x + width - 1, y + height - circleR); | ||
| 338 | g.drawArc(x + width - circleD - 1, y + height - circleD - 1, | ||
| 339 | circleD, circleD, 270, 90); | ||
| 340 | g.drawArc(x + width - circleD - 1, y, circleD, circleD, 0, 90); | ||
| 341 | g.drawLine(x + tagSize, y, x + width - circleR, y); | ||
| 342 | g.drawLine(x + tagSize, y + height - 1, | ||
| 343 | x + width - circleR, y + height - 1); | ||
| 344 | |||
| 345 | g.drawLine(x + tagSize, y, | ||
| 346 | x, y + height / 2); | ||
| 347 | g.drawLine(x + tagSize, y + height, | ||
| 348 | x, y + height / 2); | ||
| 349 | } | ||
| 350 | |||
| 351 | public Insets getBorderInsets(Component c) { | ||
| 352 | return new Insets(2, tagSize + 2 + padding, 2, 2 + padding); | ||
| 353 | } | ||
| 354 | |||
| 355 | public boolean isBorderOpaque() { | ||
| 356 | return false; | ||
| 357 | } | ||
| 358 | } // End of class HiddenTagView.EndTagBorder | ||
| 359 | |||
| 360 | |||
| 361 | } // End of HiddenTagView | ||