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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 | |