Mercurial > projects > dwt-addons
annotate dwtx/jface/internal/text/html/BrowserInformationControl.d @ 153:f70d9508c95c
Fix java Collection imports
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 25 Aug 2008 00:27:31 +0200 |
| parents | 5cf141e43417 |
| children | 25f1f92fa3df |
| rev | line source |
|---|---|
| 129 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2008 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module dwtx.jface.internal.text.html.BrowserInformationControl; | |
| 14 | |
| 131 | 15 import dwtx.jface.internal.text.html.HTML2TextReader; // packageimport |
| 16 import dwtx.jface.internal.text.html.HTMLPrinter; // packageimport | |
| 17 import dwtx.jface.internal.text.html.SubstitutionTextReader; // packageimport | |
| 18 import dwtx.jface.internal.text.html.HTMLTextPresenter; // packageimport | |
| 19 import dwtx.jface.internal.text.html.BrowserInput; // packageimport | |
| 20 import dwtx.jface.internal.text.html.SingleCharReader; // packageimport | |
| 21 import dwtx.jface.internal.text.html.BrowserInformationControlInput; // packageimport | |
| 22 import dwtx.jface.internal.text.html.HTMLMessages; // packageimport | |
| 23 | |
| 24 | |
| 129 | 25 import dwt.dwthelper.utils; |
| 26 | |
| 27 import java.io.IOException; | |
| 28 import java.io.StringReader; | |
|
153
f70d9508c95c
Fix java Collection imports
Frank Benoit <benoit@tionex.de>
parents:
150
diff
changeset
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29 import dwtx.dwtxhelper.Collection; |
| 129 | 30 |
| 31 import dwt.DWT; | |
| 32 import dwt.DWTError; | |
| 33 import dwt.browser.Browser; | |
| 34 import dwt.browser.LocationListener; | |
| 35 import dwt.browser.ProgressAdapter; | |
| 36 import dwt.browser.ProgressEvent; | |
| 37 import dwt.custom.StyleRange; | |
| 38 import dwt.events.KeyEvent; | |
| 39 import dwt.events.KeyListener; | |
| 40 import dwt.graphics.Color; | |
| 41 import dwt.graphics.Font; | |
| 42 import dwt.graphics.FontData; | |
| 43 import dwt.graphics.GC; | |
| 44 import dwt.graphics.Point; | |
| 45 import dwt.graphics.Rectangle; | |
| 46 import dwt.graphics.TextLayout; | |
| 47 import dwt.graphics.TextStyle; | |
| 48 import dwt.widgets.Composite; | |
| 49 import dwt.widgets.Display; | |
| 50 import dwt.widgets.Menu; | |
| 51 import dwt.widgets.Shell; | |
| 52 import dwt.widgets.Slider; | |
| 53 import dwtx.core.runtime.Assert; | |
| 54 import dwtx.core.runtime.ListenerList; | |
| 55 import dwtx.jface.action.ToolBarManager; | |
| 56 import dwtx.jface.resource.JFaceResources; | |
| 57 import dwtx.jface.text.AbstractInformationControl; | |
| 58 import dwtx.jface.text.IDelayedInputChangeProvider; | |
| 59 import dwtx.jface.text.IInformationControlExtension2; | |
| 60 import dwtx.jface.text.IInputChangedListener; | |
| 61 import dwtx.jface.text.TextPresentation; | |
| 62 | |
| 63 | |
| 64 /** | |
| 65 * Displays HTML information in a {@link dwt.browser.Browser} widget. | |
| 66 * <p> | |
| 67 * This {@link IInformationControlExtension2} expects {@link #setInput(Object)} to be | |
| 68 * called with an argument of type {@link BrowserInformationControlInput}. | |
| 69 * </p> | |
| 70 * <p> | |
| 71 * Moved into this package from <code>dwtx.jface.internal.text.revisions</code>.</p> | |
| 72 * <p> | |
| 73 * This class may be instantiated; it is not intended to be subclassed.</p> | |
| 74 * <p> | |
| 75 * Current problems: | |
| 76 * <ul> | |
| 77 * <li>the size computation is too small</li> | |
| 78 * <li>focusLost event is not sent - see https://bugs.eclipse.org/bugs/show_bug.cgi?id=84532</li> | |
| 79 * </ul> | |
| 80 * </p> | |
| 150 | 81 * |
| 129 | 82 * @since 3.2 |
| 83 */ | |
| 84 public class BrowserInformationControl : AbstractInformationControl , IInformationControlExtension2, IDelayedInputChangeProvider { | |
| 85 | |
| 86 | |
| 87 /** | |
| 88 * Tells whether the DWT Browser widget and hence this information | |
| 89 * control is available. | |
| 90 * | |
| 91 * @param parent the parent component used for checking or <code>null</code> if none | |
| 92 * @return <code>true</code> if this control is available | |
| 93 */ | |
| 94 public static bool isAvailable(Composite parent) { | |
| 95 if (!fgAvailabilityChecked) { | |
| 96 try { | |
| 97 Browser browser= new Browser(parent, DWT.NONE); | |
| 98 browser.dispose(); | |
| 99 fgIsAvailable= true; | |
| 150 | 100 |
| 129 | 101 Slider sliderV= new Slider(parent, DWT.VERTICAL); |
| 102 Slider sliderH= new Slider(parent, DWT.HORIZONTAL); | |
| 103 int width= sliderV.computeSize(DWT.DEFAULT, DWT.DEFAULT).x; | |
| 104 int height= sliderH.computeSize(DWT.DEFAULT, DWT.DEFAULT).y; | |
| 105 fgScrollBarSize= new Point(width, height); | |
| 106 sliderV.dispose(); | |
| 107 sliderH.dispose(); | |
| 108 } catch (DWTError er) { | |
| 109 fgIsAvailable= false; | |
| 110 } finally { | |
| 111 fgAvailabilityChecked= true; | |
| 112 } | |
| 113 } | |
| 114 | |
| 115 return fgIsAvailable; | |
| 116 } | |
| 117 | |
| 118 | |
| 119 /** | |
| 120 * Minimal size constraints. | |
| 121 * @since 3.2 | |
| 122 */ | |
| 147 | 123 private static const int MIN_WIDTH= 80; |
| 124 private static const int MIN_HEIGHT= 50; | |
| 129 | 125 |
| 150 | 126 |
| 129 | 127 /** |
| 128 * Availability checking cache. | |
| 129 */ | |
| 130 private static bool fgIsAvailable= false; | |
| 131 private static bool fgAvailabilityChecked= false; | |
| 132 | |
| 133 /** | |
| 134 * Cached scroll bar width and height | |
| 135 * @since 3.4 | |
| 136 */ | |
| 137 private static Point fgScrollBarSize; | |
| 150 | 138 |
| 129 | 139 /** The control's browser widget */ |
| 140 private Browser fBrowser; | |
| 141 /** Tells whether the browser has content */ | |
| 142 private bool fBrowserHasContent; | |
| 143 /** Text layout used to approximate size of content when rendered in browser */ | |
| 144 private TextLayout fTextLayout; | |
| 145 /** Bold text style */ | |
| 146 private TextStyle fBoldStyle; | |
| 147 | |
| 148 private BrowserInformationControlInput fInput; | |
| 149 | |
| 150 /** | |
| 151 * <code>true</code> iff the browser has completed loading of the last | |
| 152 * input set via {@link #setInformation(String)}. | |
| 153 * @since 3.4 | |
| 154 */ | |
| 155 private bool fCompleted= false; | |
| 156 | |
| 157 /** | |
| 158 * The listener to be notified when a delayed location changing event happened. | |
| 159 * @since 3.4 | |
| 160 */ | |
| 161 private IInputChangedListener fDelayedInputChangeListener; | |
| 162 | |
| 163 /** | |
| 164 * The listeners to be notified when the input changed. | |
| 165 * @since 3.4 | |
| 166 */ | |
| 167 private ListenerList/*<IInputChangedListener>*/ fInputChangeListeners= new ListenerList(ListenerList.IDENTITY); | |
| 168 | |
| 169 /** | |
| 170 * The symbolic name of the font used for size computations, or <code>null</code> to use dialog font. | |
| 171 * @since 3.4 | |
| 172 */ | |
| 146 | 173 private const String fSymbolicFontName; |
| 129 | 174 |
| 175 | |
| 176 /** | |
| 177 * Creates a browser information control with the given shell as parent. | |
| 150 | 178 * |
| 129 | 179 * @param parent the parent shell |
| 180 * @param symbolicFontName the symbolic name of the font used for size computations | |
| 181 * @param resizable <code>true</code> if the control should be resizable | |
| 182 * @since 3.4 | |
| 183 */ | |
|
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184 public this(Shell parent, String symbolicFontName, bool resizable) { |
| 129 | 185 super(parent, resizable); |
| 186 fSymbolicFontName= symbolicFontName; | |
| 187 create(); | |
| 188 } | |
| 150 | 189 |
| 129 | 190 /** |
| 191 * Creates a browser information control with the given shell as parent. | |
| 150 | 192 * |
| 129 | 193 * @param parent the parent shell |
| 194 * @param symbolicFontName the symbolic name of the font used for size computations | |
| 195 * @param statusFieldText the text to be used in the optional status field | |
| 196 * or <code>null</code> if the status field should be hidden | |
| 197 * @since 3.4 | |
| 198 */ | |
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199 public this(Shell parent, String symbolicFontName, String statusFieldText) { |
| 129 | 200 super(parent, statusFieldText); |
| 201 fSymbolicFontName= symbolicFontName; | |
| 202 create(); | |
| 203 } | |
| 150 | 204 |
| 129 | 205 /** |
| 206 * Creates a browser information control with the given shell as parent. | |
| 150 | 207 * |
| 129 | 208 * @param parent the parent shell |
| 209 * @param symbolicFontName the symbolic name of the font used for size computations | |
| 210 * @param toolBarManager the manager or <code>null</code> if toolbar is not desired | |
| 211 * @since 3.4 | |
| 212 */ | |
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213 public this(Shell parent, String symbolicFontName, ToolBarManager toolBarManager) { |
| 129 | 214 super(parent, toolBarManager); |
| 215 fSymbolicFontName= symbolicFontName; | |
| 216 create(); | |
| 217 } | |
| 150 | 218 |
| 129 | 219 /* |
| 220 * @see dwtx.jface.text.AbstractInformationControl#createContent(dwt.widgets.Composite) | |
| 221 */ | |
| 222 protected void createContent(Composite parent) { | |
| 223 fBrowser= new Browser(parent, DWT.NONE); | |
| 150 | 224 |
| 129 | 225 Display display= getShell().getDisplay(); |
| 226 fBrowser.setForeground(display.getSystemColor(DWT.COLOR_INFO_FOREGROUND)); | |
| 227 fBrowser.setBackground(display.getSystemColor(DWT.COLOR_INFO_BACKGROUND)); | |
| 135 | 228 fBrowser.addKeyListener(new class() KeyListener { |
| 129 | 229 |
| 230 public void keyPressed(KeyEvent e) { | |
| 231 if (e.character is 0x1B) // ESC | |
| 232 getShell().dispose(); // XXX: Just hide? Would avoid constant recreations. | |
| 233 } | |
| 234 | |
| 235 public void keyReleased(KeyEvent e) {} | |
| 236 }); | |
| 237 | |
| 135 | 238 fBrowser.addProgressListener(new class() ProgressAdapter { |
| 129 | 239 public void completed(ProgressEvent event) { |
| 240 fCompleted= true; | |
| 241 } | |
| 242 }); | |
| 150 | 243 |
| 129 | 244 // Replace browser's built-in context menu with none |
| 245 fBrowser.setMenu(new Menu(getShell(), DWT.NONE)); | |
| 150 | 246 |
| 129 | 247 createTextLayout(); |
| 248 } | |
| 249 | |
| 250 /** | |
| 251 * {@inheritDoc} | |
| 252 * @deprecated use {@link #setInput(Object)} | |
| 253 */ | |
| 254 public void setInformation(final String content) { | |
| 135 | 255 setInput(new class(null) BrowserInformationControlInput { |
| 129 | 256 public String getHtml() { |
| 257 return content; | |
| 258 } | |
| 259 | |
| 260 public String getInputName() { | |
| 261 return ""; //$NON-NLS-1$ | |
| 262 } | |
| 263 | |
| 264 public Object getInputElement() { | |
| 265 return content; | |
| 266 } | |
| 267 }); | |
| 268 } | |
| 150 | 269 |
| 129 | 270 /** |
| 271 * {@inheritDoc} This control can handle {@link String} and | |
| 272 * {@link BrowserInformationControlInput}. | |
| 273 */ | |
| 274 public void setInput(Object input) { | |
| 150 | 275 Assert.isLegal(input is null || cast(String)input || cast(BrowserInformationControlInput)input ); |
| 129 | 276 |
| 138 | 277 if ( cast(String)input ) { |
| 134 | 278 setInformation(cast(String)input); |
| 129 | 279 return; |
| 280 } | |
| 281 | |
| 134 | 282 fInput= cast(BrowserInformationControlInput)input; |
| 150 | 283 |
| 129 | 284 String content= null; |
| 285 if (fInput !is null) | |
| 286 content= fInput.getHtml(); | |
| 150 | 287 |
| 129 | 288 fBrowserHasContent= content !is null && content.length() > 0; |
| 289 | |
| 290 if (!fBrowserHasContent) | |
| 291 content= "<html><body ></html>"; //$NON-NLS-1$ | |
| 292 | |
| 293 bool RTL= (getShell().getStyle() & DWT.RIGHT_TO_LEFT) !is 0; | |
| 294 bool resizable= isResizable(); | |
| 295 | |
| 296 // The default "overflow:auto" would not result in a predictable width for the client area | |
| 297 // and the re-wrapping would cause visual noise | |
| 298 String[] styles= null; | |
| 299 if (RTL && resizable) | |
| 150 | 300 styles= [ "direction:rtl;", "overflow:scroll;", "word-wrap:break-word;" ]; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ |
| 129 | 301 else if (RTL && !resizable) |
| 150 | 302 styles= [ "direction:rtl;", "overflow:hidden;", "word-wrap:break-word;" ]; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ |
| 129 | 303 else if (!resizable) |
| 304 //XXX: In IE, "word-wrap: break-word;" causes bogus wrapping even in non-broken words :-(see e.g. Javadoc of String). | |
| 305 // Re-check whether we really still need this now that the Javadoc Hover header already sets this style. | |
| 150 | 306 styles= [ "overflow:hidden;"/*, "word-wrap: break-word;"*/ ]; //$NON-NLS-1$ |
| 129 | 307 else |
| 150 | 308 styles= [ "overflow:scroll;" ]; //$NON-NLS-1$ |
| 309 | |
| 129 | 310 StringBuffer buffer= new StringBuffer(content); |
| 311 HTMLPrinter.insertStyles(buffer, styles); | |
| 312 content= buffer.toString(); | |
| 150 | 313 |
| 129 | 314 /* |
| 315 * XXX: Should add some JavaScript here that shows something like | |
| 316 * "(continued...)" or "..." at the end of the visible area when the page overflowed | |
| 317 * with "overflow:hidden;". | |
| 318 */ | |
| 150 | 319 |
| 129 | 320 fCompleted= false; |
| 321 fBrowser.setText(content); | |
| 150 | 322 |
| 129 | 323 Object[] listeners= fInputChangeListeners.getListeners(); |
| 324 for (int i= 0; i < listeners.length; i++) | |
| 134 | 325 (cast(IInputChangedListener)listeners[i]).inputChanged(fInput); |
| 129 | 326 } |
| 327 | |
| 328 /* | |
| 329 * @see IInformationControl#setVisible(bool) | |
| 330 */ | |
| 331 public void setVisible(bool visible) { | |
| 332 Shell shell= getShell(); | |
| 333 if (shell.isVisible() is visible) | |
| 334 return; | |
| 150 | 335 |
| 129 | 336 if (!visible) { |
| 337 super.setVisible(false); | |
| 338 setInput(null); | |
| 339 return; | |
| 340 } | |
| 150 | 341 |
| 129 | 342 /* |
| 343 * The Browser widget flickers when made visible while it is not completely loaded. | |
| 344 * The fix is to delay the call to setVisible until either loading is completed | |
| 345 * (see ProgressListener in constructor), or a timeout has been reached. | |
| 346 */ | |
| 347 final Display display= shell.getDisplay(); | |
| 150 | 348 |
| 129 | 349 // Make sure the display wakes from sleep after timeout: |
| 135 | 350 display.timerExec(100, new class() Runnable { |
| 129 | 351 public void run() { |
| 352 fCompleted= true; | |
| 353 } | |
| 354 }); | |
| 150 | 355 |
| 129 | 356 while (!fCompleted) { |
| 357 // Drive the event loop to process the events required to load the browser widget's contents: | |
| 358 if (!display.readAndDispatch()) { | |
| 359 display.sleep(); | |
| 360 } | |
| 361 } | |
| 150 | 362 |
| 129 | 363 shell= getShell(); |
| 364 if (shell is null || shell.isDisposed()) | |
| 365 return; | |
| 150 | 366 |
| 129 | 367 /* |
| 368 * Avoids flickering when replacing hovers, especially on Vista in ON_CLICK mode. | |
| 369 * Causes flickering on GTK. Carbon does not care. | |
| 370 */ | |
| 371 if ("win32".equals(DWT.getPlatform())) //$NON-NLS-1$ | |
| 372 shell.moveAbove(null); | |
| 150 | 373 |
| 129 | 374 super.setVisible(true); |
| 375 } | |
| 376 | |
| 377 /* | |
| 378 * @see dwtx.jface.text.AbstractInformationControl#setSize(int, int) | |
| 379 */ | |
| 380 public void setSize(int width, int height) { | |
| 381 fBrowser.setRedraw(false); // avoid flickering | |
| 382 try { | |
| 383 super.setSize(width, height); | |
| 384 } finally { | |
| 385 fBrowser.setRedraw(true); | |
| 386 } | |
| 387 } | |
| 388 | |
| 389 /** | |
| 390 * Creates and initializes the text layout used | |
| 391 * to compute the size hint. | |
| 150 | 392 * |
| 129 | 393 * @since 3.2 |
| 394 */ | |
| 395 private void createTextLayout() { | |
| 396 fTextLayout= new TextLayout(fBrowser.getDisplay()); | |
| 150 | 397 |
| 129 | 398 // Initialize fonts |
| 399 Font font= fSymbolicFontName is null ? JFaceResources.getDialogFont() : JFaceResources.getFont(fSymbolicFontName); | |
| 400 fTextLayout.setFont(font); | |
| 401 fTextLayout.setWidth(-1); | |
| 402 FontData[] fontData= font.getFontData(); | |
| 403 for (int i= 0; i < fontData.length; i++) | |
| 404 fontData[i].setStyle(DWT.BOLD); | |
| 405 font= new Font(getShell().getDisplay(), fontData); | |
| 406 fBoldStyle= new TextStyle(font, null, null); | |
| 150 | 407 |
| 129 | 408 // Compute and set tab width |
| 409 fTextLayout.setText(" "); //$NON-NLS-1$ | |
| 410 int tabWidth = fTextLayout.getBounds().width; | |
| 150 | 411 fTextLayout.setTabs([tabWidth]); |
| 129 | 412 |
| 413 fTextLayout.setText(""); //$NON-NLS-1$ | |
| 414 } | |
| 415 | |
| 416 /* | |
| 417 * @see IInformationControl#dispose() | |
| 418 */ | |
| 419 public void dispose() { | |
| 420 if (fTextLayout !is null) { | |
| 421 fTextLayout.dispose(); | |
| 422 fTextLayout= null; | |
| 423 } | |
| 424 if (fBoldStyle !is null) { | |
| 425 fBoldStyle.font.dispose(); | |
| 426 fBoldStyle= null; | |
| 427 } | |
| 428 fBrowser= null; | |
| 150 | 429 |
| 129 | 430 super.dispose(); |
| 431 } | |
| 432 | |
| 433 /* | |
| 434 * @see IInformationControl#computeSizeHint() | |
| 435 */ | |
| 436 public Point computeSizeHint() { | |
| 437 Point sizeConstraints= getSizeConstraints(); | |
| 438 Rectangle trim= computeTrim(); | |
| 439 int height= trim.height; | |
| 150 | 440 |
| 129 | 441 //FIXME: The HTML2TextReader does not render <p> like a browser. |
| 442 // Instead of inserting an empty line, it just adds a single line break. | |
| 443 // Furthermore, the indentation of <dl><dd> elements is too small (e.g with a long @see line) | |
| 444 TextPresentation presentation= new TextPresentation(); | |
| 445 HTML2TextReader reader= new HTML2TextReader(new StringReader(fInput.getHtml()), presentation); | |
| 446 String text; | |
| 447 try { | |
| 448 text= reader.getString(); | |
| 449 } catch (IOException e) { | |
| 450 text= ""; //$NON-NLS-1$ | |
| 451 } | |
| 452 | |
| 453 fTextLayout.setText(text); | |
| 454 fTextLayout.setWidth(sizeConstraints is null ? DWT.DEFAULT : sizeConstraints.x - trim.width); | |
| 455 Iterator iter= presentation.getAllStyleRangeIterator(); | |
| 456 while (iter.hasNext()) { | |
| 134 | 457 StyleRange sr= cast(StyleRange)iter.next(); |
| 129 | 458 if (sr.fontStyle is DWT.BOLD) |
| 459 fTextLayout.setStyle(fBoldStyle, sr.start, sr.start + sr.length - 1); | |
| 460 } | |
| 150 | 461 |
| 129 | 462 Rectangle bounds= fTextLayout.getBounds(); // does not return minimum width, see https://bugs.eclipse.org/bugs/show_bug.cgi?id=217446 |
| 463 int lineCount= fTextLayout.getLineCount(); | |
| 464 int textWidth= 0; | |
| 465 for (int i= 0; i < lineCount; i++) { | |
| 466 Rectangle rect= fTextLayout.getLineBounds(i); | |
| 467 int lineWidth= rect.x + rect.width; | |
| 468 if (i is 0) | |
| 469 lineWidth += fInput.getLeadingImageWidth(); | |
| 470 textWidth= Math.max(textWidth, lineWidth); | |
| 471 } | |
| 472 bounds.width= textWidth; | |
| 473 fTextLayout.setText(""); //$NON-NLS-1$ | |
| 150 | 474 |
| 129 | 475 int minWidth= bounds.width; |
| 476 height= height + bounds.height; | |
| 150 | 477 |
| 129 | 478 // Add some air to accommodate for different browser renderings |
| 479 minWidth+= 15; | |
| 480 height+= 15; | |
| 481 | |
| 150 | 482 |
| 129 | 483 // Apply max size constraints |
| 484 if (sizeConstraints !is null) { | |
| 485 if (sizeConstraints.x !is DWT.DEFAULT) | |
| 486 minWidth= Math.min(sizeConstraints.x, minWidth + trim.width); | |
| 487 if (sizeConstraints.y !is DWT.DEFAULT) | |
| 488 height= Math.min(sizeConstraints.y, height); | |
| 489 } | |
| 490 | |
| 491 // Ensure minimal size | |
| 492 int width= Math.max(MIN_WIDTH, minWidth); | |
| 493 height= Math.max(MIN_HEIGHT, height); | |
| 150 | 494 |
| 129 | 495 return new Point(width, height); |
| 496 } | |
| 497 | |
| 498 /* | |
| 499 * @see dwtx.jface.text.IInformationControlExtension3#computeTrim() | |
| 500 */ | |
| 501 public Rectangle computeTrim() { | |
| 502 Rectangle trim= super.computeTrim(); | |
| 503 if (isResizable()) { | |
| 504 bool RTL= (getShell().getStyle() & DWT.RIGHT_TO_LEFT) !is 0; | |
| 150 | 505 if (RTL) { |
| 129 | 506 trim.x-= fgScrollBarSize.x; |
| 507 } | |
| 508 trim.width+= fgScrollBarSize.x; | |
| 509 trim.height+= fgScrollBarSize.y; | |
| 510 } | |
| 511 return trim; | |
| 512 } | |
| 150 | 513 |
| 129 | 514 /** |
| 515 * Adds the listener to the collection of listeners who will be | |
| 516 * notified when the current location has changed or is about to change. | |
| 150 | 517 * |
| 129 | 518 * @param listener the location listener |
| 519 * @since 3.4 | |
| 520 */ | |
| 521 public void addLocationListener(LocationListener listener) { | |
| 522 fBrowser.addLocationListener(listener); | |
| 523 } | |
| 524 | |
| 525 /* | |
| 526 * @see IInformationControl#setForegroundColor(Color) | |
| 527 */ | |
| 528 public void setForegroundColor(Color foreground) { | |
| 529 super.setForegroundColor(foreground); | |
| 530 fBrowser.setForeground(foreground); | |
| 531 } | |
| 532 | |
| 533 /* | |
| 534 * @see IInformationControl#setBackgroundColor(Color) | |
| 535 */ | |
| 536 public void setBackgroundColor(Color background) { | |
| 537 super.setBackgroundColor(background); | |
| 538 fBrowser.setBackground(background); | |
| 539 } | |
| 540 | |
| 541 /* | |
| 542 * @see IInformationControlExtension#hasContents() | |
| 543 */ | |
| 544 public bool hasContents() { | |
| 545 return fBrowserHasContent; | |
| 546 } | |
| 150 | 547 |
| 129 | 548 /** |
| 549 * Adds a listener for input changes to this input change provider. | |
| 550 * Has no effect if an identical listener is already registered. | |
| 150 | 551 * |
| 129 | 552 * @param inputChangeListener the listener to add |
| 553 * @since 3.4 | |
| 554 */ | |
| 555 public void addInputChangeListener(IInputChangedListener inputChangeListener) { | |
| 556 Assert.isNotNull(inputChangeListener); | |
| 557 fInputChangeListeners.add(inputChangeListener); | |
| 558 } | |
| 150 | 559 |
| 129 | 560 /** |
| 561 * Removes the given input change listener from this input change provider. | |
| 562 * Has no effect if an identical listener is not registered. | |
| 150 | 563 * |
| 129 | 564 * @param inputChangeListener the listener to remove |
| 565 * @since 3.4 | |
| 566 */ | |
| 567 public void removeInputChangeListener(IInputChangedListener inputChangeListener) { | |
| 568 fInputChangeListeners.remove(inputChangeListener); | |
| 569 } | |
| 150 | 570 |
| 129 | 571 /* |
| 572 * @see dwtx.jface.text.IDelayedInputChangeProvider#setDelayedInputChangeListener(dwtx.jface.text.IInputChangedListener) | |
| 573 * @since 3.4 | |
| 574 */ | |
| 575 public void setDelayedInputChangeListener(IInputChangedListener inputChangeListener) { | |
| 576 fDelayedInputChangeListener= inputChangeListener; | |
| 577 } | |
| 150 | 578 |
| 129 | 579 /** |
| 580 * Tells whether a delayed input change listener is registered. | |
| 150 | 581 * |
| 129 | 582 * @return <code>true</code> iff a delayed input change |
| 583 * listener is currently registered | |
| 584 * @since 3.4 | |
| 585 */ | |
| 586 public bool hasDelayedInputChangeListener() { | |
| 587 return fDelayedInputChangeListener !is null; | |
| 588 } | |
| 150 | 589 |
| 129 | 590 /** |
| 591 * Notifies listeners of a delayed input change. | |
| 150 | 592 * |
| 129 | 593 * @param newInput the new input, or <code>null</code> to request cancellation |
| 594 * @since 3.4 | |
| 595 */ | |
| 596 public void notifyDelayedInputChange(Object newInput) { | |
| 597 if (fDelayedInputChangeListener !is null) | |
| 598 fDelayedInputChangeListener.inputChanged(newInput); | |
| 599 } | |
| 150 | 600 |
| 129 | 601 /* |
| 602 * @see java.lang.Object#toString() | |
| 603 * @since 3.4 | |
| 604 */ | |
| 605 public String toString() { | |
| 606 String style= (getShell().getStyle() & DWT.RESIZE) is 0 ? "fixed" : "resizeable"; //$NON-NLS-1$ //$NON-NLS-2$ | |
| 607 return super.toString() + " - style: " + style; //$NON-NLS-1$ | |
| 608 } | |
| 609 | |
| 610 /** | |
| 611 * @return the current browser input or <code>null</code> | |
| 612 */ | |
| 613 public BrowserInformationControlInput getInput() { | |
| 614 return fInput; | |
| 615 } | |
| 150 | 616 |
| 129 | 617 /* |
| 618 * @see dwtx.jface.text.IInformationControlExtension5#computeSizeConstraints(int, int) | |
| 619 */ | |
| 620 public Point computeSizeConstraints(int widthInChars, int heightInChars) { | |
| 621 if (fSymbolicFontName is null) | |
| 622 return null; | |
| 150 | 623 |
| 129 | 624 GC gc= new GC(fBrowser); |
| 625 Font font= fSymbolicFontName is null ? JFaceResources.getDialogFont() : JFaceResources.getFont(fSymbolicFontName); | |
| 626 gc.setFont(font); | |
| 627 int width= gc.getFontMetrics().getAverageCharWidth(); | |
| 628 int height= gc.getFontMetrics().getHeight(); | |
| 629 gc.dispose(); | |
| 150 | 630 |
| 129 | 631 return new Point(widthInChars * width, heightInChars * height); |
| 632 } | |
| 633 | |
| 634 } |