Mercurial > projects > dwt-addons
annotate dwtx/jface/text/TextViewerHoverManager.d @ 159:7926b636c282
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| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Wed, 27 Aug 2008 01:57:58 +0200 |
| parents | a9566845f1cb |
| children | f8d52b926852 |
| 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.text.TextViewerHoverManager; | |
| 14 | |
| 131 | 15 import dwtx.jface.text.IDocumentPartitioningListener; // packageimport |
| 16 import dwtx.jface.text.DefaultTextHover; // packageimport | |
| 17 import dwtx.jface.text.AbstractInformationControl; // packageimport | |
| 18 import dwtx.jface.text.TextUtilities; // packageimport | |
| 19 import dwtx.jface.text.IInformationControlCreatorExtension; // packageimport | |
| 20 import dwtx.jface.text.AbstractInformationControlManager; // packageimport | |
| 21 import dwtx.jface.text.ITextViewerExtension2; // packageimport | |
| 22 import dwtx.jface.text.IDocumentPartitioner; // packageimport | |
| 23 import dwtx.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport | |
| 24 import dwtx.jface.text.ITextSelection; // packageimport | |
| 25 import dwtx.jface.text.Document; // packageimport | |
| 26 import dwtx.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport | |
| 27 import dwtx.jface.text.ITextListener; // packageimport | |
| 28 import dwtx.jface.text.BadPartitioningException; // packageimport | |
| 29 import dwtx.jface.text.ITextViewerExtension5; // packageimport | |
| 30 import dwtx.jface.text.IDocumentPartitionerExtension3; // packageimport | |
| 31 import dwtx.jface.text.IUndoManager; // packageimport | |
| 32 import dwtx.jface.text.ITextHoverExtension2; // packageimport | |
| 33 import dwtx.jface.text.IRepairableDocument; // packageimport | |
| 34 import dwtx.jface.text.IRewriteTarget; // packageimport | |
| 35 import dwtx.jface.text.DefaultPositionUpdater; // packageimport | |
| 36 import dwtx.jface.text.RewriteSessionEditProcessor; // packageimport | |
| 37 import dwtx.jface.text.DocumentRewriteSession; // packageimport | |
| 38 import dwtx.jface.text.TextViewer; // packageimport | |
| 39 import dwtx.jface.text.ITextViewerExtension8; // packageimport | |
| 40 import dwtx.jface.text.RegExMessages; // packageimport | |
| 41 import dwtx.jface.text.IDelayedInputChangeProvider; // packageimport | |
| 42 import dwtx.jface.text.ITextOperationTargetExtension; // packageimport | |
| 43 import dwtx.jface.text.IWidgetTokenOwner; // packageimport | |
| 44 import dwtx.jface.text.IViewportListener; // packageimport | |
| 45 import dwtx.jface.text.GapTextStore; // packageimport | |
| 46 import dwtx.jface.text.MarkSelection; // packageimport | |
| 47 import dwtx.jface.text.IDocumentPartitioningListenerExtension; // packageimport | |
| 48 import dwtx.jface.text.IDocumentAdapterExtension; // packageimport | |
| 49 import dwtx.jface.text.IInformationControlExtension; // packageimport | |
| 50 import dwtx.jface.text.IDocumentPartitioningListenerExtension2; // packageimport | |
| 51 import dwtx.jface.text.DefaultDocumentAdapter; // packageimport | |
| 52 import dwtx.jface.text.ITextViewerExtension3; // packageimport | |
| 53 import dwtx.jface.text.IInformationControlCreator; // packageimport | |
| 54 import dwtx.jface.text.TypedRegion; // packageimport | |
| 55 import dwtx.jface.text.ISynchronizable; // packageimport | |
| 56 import dwtx.jface.text.IMarkRegionTarget; // packageimport | |
| 57 import dwtx.jface.text.TextViewerUndoManager; // packageimport | |
| 58 import dwtx.jface.text.IRegion; // packageimport | |
| 59 import dwtx.jface.text.IInformationControlExtension2; // packageimport | |
| 60 import dwtx.jface.text.IDocumentExtension4; // packageimport | |
| 61 import dwtx.jface.text.IDocumentExtension2; // packageimport | |
| 62 import dwtx.jface.text.IDocumentPartitionerExtension2; // packageimport | |
| 63 import dwtx.jface.text.Assert; // packageimport | |
| 64 import dwtx.jface.text.DefaultInformationControl; // packageimport | |
| 65 import dwtx.jface.text.IWidgetTokenOwnerExtension; // packageimport | |
| 66 import dwtx.jface.text.DocumentClone; // packageimport | |
| 67 import dwtx.jface.text.DefaultUndoManager; // packageimport | |
| 68 import dwtx.jface.text.IFindReplaceTarget; // packageimport | |
| 69 import dwtx.jface.text.IAutoEditStrategy; // packageimport | |
| 70 import dwtx.jface.text.ILineTrackerExtension; // packageimport | |
| 71 import dwtx.jface.text.IUndoManagerExtension; // packageimport | |
| 72 import dwtx.jface.text.TextSelection; // packageimport | |
| 73 import dwtx.jface.text.DefaultAutoIndentStrategy; // packageimport | |
| 74 import dwtx.jface.text.IAutoIndentStrategy; // packageimport | |
| 75 import dwtx.jface.text.IPainter; // packageimport | |
| 76 import dwtx.jface.text.IInformationControl; // packageimport | |
| 77 import dwtx.jface.text.IInformationControlExtension3; // packageimport | |
| 78 import dwtx.jface.text.ITextViewerExtension6; // packageimport | |
| 79 import dwtx.jface.text.IInformationControlExtension4; // packageimport | |
| 80 import dwtx.jface.text.DefaultLineTracker; // packageimport | |
| 81 import dwtx.jface.text.IDocumentInformationMappingExtension; // packageimport | |
| 82 import dwtx.jface.text.IRepairableDocumentExtension; // packageimport | |
| 83 import dwtx.jface.text.ITextHover; // packageimport | |
| 84 import dwtx.jface.text.FindReplaceDocumentAdapter; // packageimport | |
| 85 import dwtx.jface.text.ILineTracker; // packageimport | |
| 86 import dwtx.jface.text.Line; // packageimport | |
| 87 import dwtx.jface.text.ITextViewerExtension; // packageimport | |
| 88 import dwtx.jface.text.IDocumentAdapter; // packageimport | |
| 89 import dwtx.jface.text.TextEvent; // packageimport | |
| 90 import dwtx.jface.text.BadLocationException; // packageimport | |
| 91 import dwtx.jface.text.AbstractDocument; // packageimport | |
| 92 import dwtx.jface.text.AbstractLineTracker; // packageimport | |
| 93 import dwtx.jface.text.TreeLineTracker; // packageimport | |
| 94 import dwtx.jface.text.ITextPresentationListener; // packageimport | |
| 95 import dwtx.jface.text.Region; // packageimport | |
| 96 import dwtx.jface.text.ITextViewer; // packageimport | |
| 97 import dwtx.jface.text.IDocumentInformationMapping; // packageimport | |
| 98 import dwtx.jface.text.MarginPainter; // packageimport | |
| 99 import dwtx.jface.text.IPaintPositionManager; // packageimport | |
| 100 import dwtx.jface.text.TextPresentation; // packageimport | |
| 101 import dwtx.jface.text.IFindReplaceTargetExtension; // packageimport | |
| 102 import dwtx.jface.text.ISlaveDocumentManagerExtension; // packageimport | |
| 103 import dwtx.jface.text.ISelectionValidator; // packageimport | |
| 104 import dwtx.jface.text.IDocumentExtension; // packageimport | |
| 105 import dwtx.jface.text.PropagatingFontFieldEditor; // packageimport | |
| 106 import dwtx.jface.text.ConfigurableLineTracker; // packageimport | |
| 107 import dwtx.jface.text.SlaveDocumentEvent; // packageimport | |
| 108 import dwtx.jface.text.IDocumentListener; // packageimport | |
| 109 import dwtx.jface.text.PaintManager; // packageimport | |
| 110 import dwtx.jface.text.IFindReplaceTargetExtension3; // packageimport | |
| 111 import dwtx.jface.text.ITextDoubleClickStrategy; // packageimport | |
| 112 import dwtx.jface.text.IDocumentExtension3; // packageimport | |
| 113 import dwtx.jface.text.Position; // packageimport | |
| 114 import dwtx.jface.text.TextMessages; // packageimport | |
| 115 import dwtx.jface.text.CopyOnWriteTextStore; // packageimport | |
| 116 import dwtx.jface.text.WhitespaceCharacterPainter; // packageimport | |
| 117 import dwtx.jface.text.IPositionUpdater; // packageimport | |
| 118 import dwtx.jface.text.DefaultTextDoubleClickStrategy; // packageimport | |
| 119 import dwtx.jface.text.ListLineTracker; // packageimport | |
| 120 import dwtx.jface.text.ITextInputListener; // packageimport | |
| 121 import dwtx.jface.text.BadPositionCategoryException; // packageimport | |
| 122 import dwtx.jface.text.IWidgetTokenKeeperExtension; // packageimport | |
| 123 import dwtx.jface.text.IInputChangedListener; // packageimport | |
| 124 import dwtx.jface.text.ITextOperationTarget; // packageimport | |
| 125 import dwtx.jface.text.IDocumentInformationMappingExtension2; // packageimport | |
| 126 import dwtx.jface.text.ITextViewerExtension7; // packageimport | |
| 127 import dwtx.jface.text.IInformationControlExtension5; // packageimport | |
| 128 import dwtx.jface.text.IDocumentRewriteSessionListener; // packageimport | |
| 129 import dwtx.jface.text.JFaceTextUtil; // packageimport | |
| 130 import dwtx.jface.text.AbstractReusableInformationControlCreator; // packageimport | |
| 131 import dwtx.jface.text.TabsToSpacesConverter; // packageimport | |
| 132 import dwtx.jface.text.CursorLinePainter; // packageimport | |
| 133 import dwtx.jface.text.ITextHoverExtension; // packageimport | |
| 134 import dwtx.jface.text.IEventConsumer; // packageimport | |
| 135 import dwtx.jface.text.IDocument; // packageimport | |
| 136 import dwtx.jface.text.IWidgetTokenKeeper; // packageimport | |
| 137 import dwtx.jface.text.DocumentCommand; // packageimport | |
| 138 import dwtx.jface.text.TypedPosition; // packageimport | |
| 139 import dwtx.jface.text.IEditingSupportRegistry; // packageimport | |
| 140 import dwtx.jface.text.IDocumentPartitionerExtension; // packageimport | |
| 141 import dwtx.jface.text.AbstractHoverInformationControlManager; // packageimport | |
| 142 import dwtx.jface.text.IEditingSupport; // packageimport | |
| 143 import dwtx.jface.text.IMarkSelection; // packageimport | |
| 144 import dwtx.jface.text.ISlaveDocumentManager; // packageimport | |
| 145 import dwtx.jface.text.DocumentEvent; // packageimport | |
| 146 import dwtx.jface.text.DocumentPartitioningChangedEvent; // packageimport | |
| 147 import dwtx.jface.text.ITextStore; // packageimport | |
| 148 import dwtx.jface.text.JFaceTextMessages; // packageimport | |
| 149 import dwtx.jface.text.DocumentRewriteSessionEvent; // packageimport | |
| 150 import dwtx.jface.text.SequentialRewriteTextStore; // packageimport | |
| 151 import dwtx.jface.text.DocumentRewriteSessionType; // packageimport | |
| 152 import dwtx.jface.text.TextAttribute; // packageimport | |
| 153 import dwtx.jface.text.ITextViewerExtension4; // packageimport | |
| 154 import dwtx.jface.text.ITypedRegion; // packageimport | |
| 155 | |
| 129 | 156 import dwt.dwthelper.utils; |
| 159 | 157 import tango.core.Thread; |
| 129 | 158 |
| 159 import dwt.custom.StyledText; | |
| 160 import dwt.events.MouseEvent; | |
| 161 import dwt.events.MouseMoveListener; | |
| 162 import dwt.graphics.Point; | |
| 163 import dwt.graphics.Rectangle; | |
| 164 import dwt.widgets.Display; | |
| 165 import dwtx.core.runtime.ILog; | |
| 166 import dwtx.core.runtime.IStatus; | |
| 167 import dwtx.core.runtime.Platform; | |
| 168 import dwtx.core.runtime.Status; | |
| 169 | |
| 170 | |
| 171 /** | |
| 172 * This manager controls the layout, content, and visibility of an information | |
| 173 * control in reaction to mouse hover events issued by the text widget of a | |
| 174 * text viewer. It overrides <code>computeInformation</code>, so that the | |
| 175 * computation is performed in a dedicated background thread. This implies | |
| 176 * that the used <code>ITextHover</code> objects must be capable of | |
| 177 * operating in a non-UI thread. | |
| 178 * | |
| 179 * @since 2.0 | |
| 180 */ | |
| 181 class TextViewerHoverManager : AbstractHoverInformationControlManager , IWidgetTokenKeeper, IWidgetTokenKeeperExtension { | |
| 182 | |
| 183 | |
| 184 /** | |
| 185 * Priority of the hovers managed by this manager. | |
| 186 * Default value: <code>0</code>; | |
| 187 * @since 3.0 | |
| 188 */ | |
| 146 | 189 public const static int WIDGET_PRIORITY= 0; |
| 129 | 190 |
| 191 | |
| 192 /** The text viewer */ | |
| 193 private TextViewer fTextViewer; | |
| 194 /** The hover information computation thread */ | |
| 195 private Thread fThread; | |
| 196 /** The stopper of the computation thread */ | |
| 197 private ITextListener fStopper; | |
| 198 /** Internal monitor */ | |
| 199 private Object fMutex= new Object(); | |
| 200 /** The currently shown text hover. */ | |
| 156 | 201 private /+volatile+/ ITextHover fTextHover; |
| 129 | 202 /** |
| 203 * Tells whether the next mouse hover event | |
| 204 * should be processed. | |
| 205 * @since 3.0 | |
| 206 */ | |
| 207 private bool fProcessMouseHoverEvent= true; | |
| 208 /** | |
| 209 * Internal mouse move listener. | |
| 210 * @since 3.0 | |
| 211 */ | |
| 212 private MouseMoveListener fMouseMoveListener; | |
| 213 /** | |
| 214 * Internal view port listener. | |
| 215 * @since 3.0 | |
| 216 */ | |
| 217 private IViewportListener fViewportListener; | |
| 218 | |
| 219 | |
| 220 /** | |
| 221 * Creates a new text viewer hover manager specific for the given text viewer. | |
| 222 * The manager uses the given information control creator. | |
| 223 * | |
| 224 * @param textViewer the viewer for which the controller is created | |
| 225 * @param creator the information control creator | |
| 226 */ | |
|
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227 public this(TextViewer textViewer, IInformationControlCreator creator) { |
| 129 | 228 super(creator); |
| 229 fTextViewer= textViewer; | |
| 135 | 230 fStopper= new class() ITextListener { |
| 129 | 231 public void textChanged(TextEvent event) { |
| 232 synchronized (fMutex) { | |
| 233 if (fThread !is null) { | |
| 234 fThread.interrupt(); | |
| 235 fThread= null; | |
| 236 } | |
| 237 } | |
| 238 } | |
| 239 }; | |
| 135 | 240 fViewportListener= new class() IViewportListener { |
| 129 | 241 /* |
| 242 * @see dwtx.jface.text.IViewportListener#viewportChanged(int) | |
| 243 */ | |
| 244 public void viewportChanged(int verticalOffset) { | |
| 245 fProcessMouseHoverEvent= false; | |
| 246 } | |
| 247 }; | |
| 248 fTextViewer.addViewportListener(fViewportListener); | |
| 135 | 249 fMouseMoveListener= new class() MouseMoveListener { |
| 129 | 250 /* |
| 251 * @see MouseMoveListener#mouseMove(MouseEvent) | |
| 252 */ | |
| 253 public void mouseMove(MouseEvent event) { | |
| 254 fProcessMouseHoverEvent= true; | |
| 255 } | |
| 256 }; | |
| 257 fTextViewer.getTextWidget().addMouseMoveListener(fMouseMoveListener); | |
| 258 } | |
| 259 | |
| 260 /** | |
| 261 * Determines all necessary details and delegates the computation into | |
| 262 * a background thread. | |
| 263 */ | |
| 264 protected void computeInformation() { | |
| 265 | |
| 266 if (!fProcessMouseHoverEvent) { | |
| 267 setInformation(null, null); | |
| 268 return; | |
| 269 } | |
| 270 | |
| 271 Point location= getHoverEventLocation(); | |
| 272 int offset= computeOffsetAtLocation(location.x, location.y); | |
| 273 if (offset is -1) { | |
| 274 setInformation(null, null); | |
| 275 return; | |
| 276 } | |
| 277 | |
| 278 final ITextHover hover= fTextViewer.getTextHover(offset, getHoverEventStateMask()); | |
| 279 if (hover is null) { | |
| 280 setInformation(null, null); | |
| 281 return; | |
| 282 } | |
| 283 | |
| 284 final IRegion region= hover.getHoverRegion(fTextViewer, offset); | |
| 285 if (region is null) { | |
| 286 setInformation(null, null); | |
| 287 return; | |
| 288 } | |
| 289 | |
| 290 final Rectangle area= JFaceTextUtil.computeArea(region, fTextViewer); | |
| 291 if (area is null || area.isEmpty()) { | |
| 292 setInformation(null, null); | |
| 293 return; | |
| 294 } | |
| 295 | |
| 296 if (fThread !is null) { | |
| 297 setInformation(null, null); | |
| 298 return; | |
| 299 } | |
| 300 | |
|
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301 void threadrun() { |
| 129 | 302 // http://bugs.eclipse.org/bugs/show_bug.cgi?id=17693 |
| 303 bool hasFinished= false; | |
| 304 try { | |
| 305 if (fThread !is null) { | |
| 306 Object information; | |
| 307 try { | |
| 138 | 308 if ( cast(ITextHoverExtension2)hover ) |
| 134 | 309 information= (cast(ITextHoverExtension2)hover).getHoverInfo2(fTextViewer, region); |
| 129 | 310 else |
| 311 information= hover.getHoverInfo(fTextViewer, region); | |
| 312 } catch (ArrayIndexOutOfBoundsException x) { | |
| 313 /* | |
| 314 * This code runs in a separate thread which can | |
| 315 * lead to text offsets being out of bounds when | |
| 316 * computing the hover info (see bug 32848). | |
| 317 */ | |
| 318 information= null; | |
| 319 } | |
| 320 | |
| 138 | 321 if ( cast(ITextHoverExtension)hover ) |
| 134 | 322 setCustomInformationControlCreator((cast(ITextHoverExtension) hover).getHoverControlCreator()); |
| 129 | 323 else |
| 324 setCustomInformationControlCreator(null); | |
| 325 | |
| 326 setInformation(information, area); | |
| 327 if (information !is null) | |
| 328 fTextHover= hover; | |
| 329 } else { | |
| 330 setInformation(null, null); | |
| 331 } | |
| 332 hasFinished= true; | |
| 333 } catch (RuntimeException ex) { | |
| 334 String PLUGIN_ID= "dwtx.jface.text"; //$NON-NLS-1$ | |
| 335 ILog log= Platform.getLog(Platform.getBundle(PLUGIN_ID)); | |
| 336 log.log(new Status(IStatus.ERROR, PLUGIN_ID, IStatus.OK, "Unexpected runtime error while computing a text hover", ex)); //$NON-NLS-1$ | |
| 337 } finally { | |
| 338 synchronized (fMutex) { | |
| 339 if (fTextViewer !is null) | |
| 340 fTextViewer.removeTextListener(fStopper); | |
| 341 fThread= null; | |
| 342 // https://bugs.eclipse.org/bugs/show_bug.cgi?id=44756 | |
| 343 if (!hasFinished) | |
| 344 setInformation(null, null); | |
| 345 } | |
| 346 } | |
| 347 } | |
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348 fThread= new Thread( &threadrun ); |
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349 fThread.name = "Text Viewer Hover Presenter"; //$NON-NLS-1$ |
| 129 | 350 |
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351 fThread.isDaemon(true); |
| 129 | 352 fThread.setPriority(Thread.MIN_PRIORITY); |
| 353 synchronized (fMutex) { | |
| 354 fTextViewer.addTextListener(fStopper); | |
| 355 fThread.start(); | |
| 356 } | |
| 357 } | |
| 358 | |
| 359 /** | |
| 360 * As computation is done in the background, this method is | |
| 361 * also called in the background thread. Delegates the control | |
| 362 * flow back into the UI thread, in order to allow displaying the | |
| 363 * information in the information control. | |
| 364 */ | |
| 365 protected void presentInformation() { | |
| 366 if (fTextViewer is null) | |
| 367 return; | |
| 368 | |
| 369 StyledText textWidget= fTextViewer.getTextWidget(); | |
| 370 if (textWidget !is null && !textWidget.isDisposed()) { | |
| 371 Display display= textWidget.getDisplay(); | |
| 372 if (display is null) | |
| 373 return; | |
| 374 | |
| 135 | 375 display.asyncExec(new class() Runnable { |
| 129 | 376 public void run() { |
| 377 doPresentInformation(); | |
| 378 } | |
| 379 }); | |
| 380 } | |
| 381 } | |
| 382 | |
| 383 /* | |
| 384 * @see AbstractInformationControlManager#presentInformation() | |
| 385 */ | |
| 386 protected void doPresentInformation() { | |
| 387 super.presentInformation(); | |
| 388 } | |
| 389 | |
| 390 /** | |
| 391 * Computes the document offset underlying the given text widget coordinates. | |
| 392 * This method uses a linear search as it cannot make any assumption about | |
| 393 * how the document is actually presented in the widget. (Covers cases such | |
| 394 * as bidirectional text.) | |
| 395 * | |
| 396 * @param x the horizontal coordinate inside the text widget | |
| 397 * @param y the vertical coordinate inside the text widget | |
| 398 * @return the document offset corresponding to the given point | |
| 399 */ | |
| 400 private int computeOffsetAtLocation(int x, int y) { | |
| 401 | |
| 402 try { | |
| 403 | |
| 404 StyledText styledText= fTextViewer.getTextWidget(); | |
| 405 int widgetOffset= styledText.getOffsetAtLocation(new Point(x, y)); | |
| 406 Point p= styledText.getLocationAtOffset(widgetOffset); | |
| 407 if (p.x > x) | |
| 408 widgetOffset--; | |
| 409 | |
| 138 | 410 if ( cast(ITextViewerExtension5)fTextViewer ) { |
| 134 | 411 ITextViewerExtension5 extension= cast(ITextViewerExtension5) fTextViewer; |
| 129 | 412 return extension.widgetOffset2ModelOffset(widgetOffset); |
| 413 } | |
| 414 | |
| 415 return widgetOffset + fTextViewer._getVisibleRegionOffset(); | |
| 416 | |
| 417 } catch (IllegalArgumentException e) { | |
| 418 return -1; | |
| 419 } | |
| 420 } | |
| 421 | |
| 422 /* | |
| 423 * @see dwtx.jface.text.AbstractInformationControlManager#showInformationControl(dwt.graphics.Rectangle) | |
| 424 */ | |
| 425 protected void showInformationControl(Rectangle subjectArea) { | |
| 426 if (fTextViewer !is null && fTextViewer.requestWidgetToken(this, WIDGET_PRIORITY)) | |
| 427 super.showInformationControl(subjectArea); | |
| 428 else | |
|
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429 if (DEBUG) |
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430 System.out_.println("TextViewerHoverManager#showInformationControl(..) did not get widget token"); //$NON-NLS-1$ |
| 129 | 431 } |
| 432 | |
| 433 /* | |
| 434 * @see dwtx.jface.text.AbstractInformationControlManager#hideInformationControl() | |
| 435 */ | |
| 436 protected void hideInformationControl() { | |
| 437 try { | |
| 438 fTextHover= null; | |
| 439 super.hideInformationControl(); | |
| 440 } finally { | |
| 441 if (fTextViewer !is null) | |
| 442 fTextViewer.releaseWidgetToken(this); | |
| 443 } | |
| 444 } | |
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445 |
| 129 | 446 /* |
| 447 * @see dwtx.jface.text.AbstractInformationControlManager#replaceInformationControl(bool) | |
| 448 * @since 3.4 | |
| 449 */ | |
| 450 void replaceInformationControl(bool takeFocus) { | |
| 451 if (fTextViewer !is null) | |
| 452 fTextViewer.releaseWidgetToken(this); | |
| 453 super.replaceInformationControl(takeFocus); | |
| 454 } | |
| 455 | |
| 456 /* | |
| 457 * @see dwtx.jface.text.AbstractInformationControlManager#handleInformationControlDisposed() | |
| 458 */ | |
| 459 protected void handleInformationControlDisposed() { | |
| 460 try { | |
| 461 super.handleInformationControlDisposed(); | |
| 462 } finally { | |
| 463 if (fTextViewer !is null) | |
| 464 fTextViewer.releaseWidgetToken(this); | |
| 465 } | |
| 466 } | |
| 467 | |
| 468 /* | |
| 469 * @see dwtx.jface.text.IWidgetTokenKeeper#requestWidgetToken(dwtx.jface.text.IWidgetTokenOwner) | |
| 470 */ | |
| 471 public bool requestWidgetToken(IWidgetTokenOwner owner) { | |
| 472 fTextHover= null; | |
| 473 super.hideInformationControl(); | |
| 474 return true; | |
| 475 } | |
| 476 | |
| 477 /* | |
| 478 * @see dwtx.jface.text.IWidgetTokenKeeperExtension#requestWidgetToken(dwtx.jface.text.IWidgetTokenOwner, int) | |
| 479 * @since 3.0 | |
| 480 */ | |
| 481 public bool requestWidgetToken(IWidgetTokenOwner owner, int priority) { | |
| 482 if (priority > WIDGET_PRIORITY) { | |
| 483 fTextHover= null; | |
| 484 super.hideInformationControl(); | |
| 485 return true; | |
| 486 } | |
| 487 return false; | |
| 488 } | |
| 489 | |
| 490 /* | |
| 491 * @see dwtx.jface.text.IWidgetTokenKeeperExtension#setFocus(dwtx.jface.text.IWidgetTokenOwner) | |
| 492 * @since 3.0 | |
| 493 */ | |
| 494 public bool setFocus(IWidgetTokenOwner owner) { | |
| 495 if (! hasInformationControlReplacer()) | |
| 496 return false; | |
|
140
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parents:
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diff
changeset
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497 |
| 129 | 498 IInformationControl iControl= getCurrentInformationControl(); |
| 499 if (canReplace(iControl)) { | |
| 500 if (cancelReplacingDelay()) | |
| 501 replaceInformationControl(true); | |
|
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Following dsss compile errors
Frank Benoit <benoit@tionex.de>
parents:
138
diff
changeset
|
502 |
| 129 | 503 return true; |
| 504 } | |
|
140
26688fec6d23
Following dsss compile errors
Frank Benoit <benoit@tionex.de>
parents:
138
diff
changeset
|
505 |
| 129 | 506 return false; |
| 507 } | |
| 508 | |
| 509 /** | |
| 510 * Returns the currently shown text hover or <code>null</code> if no text | |
| 511 * hover is shown. | |
| 512 * | |
| 513 * @return the currently shown text hover or <code>null</code> | |
| 514 */ | |
| 515 protected ITextHover getCurrentTextHover() { | |
| 516 return fTextHover; | |
| 517 } | |
| 518 | |
| 519 /* | |
| 520 * @see dwtx.jface.text.AbstractHoverInformationControlManager#dispose() | |
| 521 * @since 3.0 | |
| 522 */ | |
| 523 public void dispose() { | |
| 524 if (fTextViewer !is null) { | |
| 525 fTextViewer.removeViewportListener(fViewportListener); | |
| 526 fViewportListener= null; | |
| 527 | |
| 528 StyledText st= fTextViewer.getTextWidget(); | |
| 529 if (st !is null && !st.isDisposed()) | |
| 530 st.removeMouseMoveListener(fMouseMoveListener); | |
| 531 fMouseMoveListener= null; | |
| 532 } | |
| 533 super.dispose(); | |
| 534 } | |
| 535 } |