Mercurial > projects > dwt-addons
annotate dwtx/jface/text/contentassist/CompletionProposalPopup.d @ 192:c3583c6ec027
Added missing default cases for switch statements
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 03 Nov 2008 22:52:26 +0100 |
| parents | 1a5b8f8129df |
| children |
| 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 * Sean Montgomery, sean_montgomery@comcast.net - https://bugs.eclipse.org/bugs/show_bug.cgi?id=116454 | |
| 11 * Port to the D programming language: | |
| 12 * Frank Benoit <benoit@tionex.de> | |
| 13 *******************************************************************************/ | |
| 14 module dwtx.jface.text.contentassist.CompletionProposalPopup; | |
| 15 | |
| 131 | 16 import dwtx.jface.text.contentassist.ContentAssistEvent; // packageimport |
| 17 import dwtx.jface.text.contentassist.Helper; // packageimport | |
| 18 import dwtx.jface.text.contentassist.PopupCloser; // packageimport | |
| 19 import dwtx.jface.text.contentassist.IContentAssistant; // packageimport | |
| 20 import dwtx.jface.text.contentassist.CompletionProposal; // packageimport | |
| 21 import dwtx.jface.text.contentassist.ICompletionProposalExtension5; // packageimport | |
| 22 import dwtx.jface.text.contentassist.IContextInformationValidator; // packageimport | |
| 23 import dwtx.jface.text.contentassist.IContentAssistListener; // packageimport | |
| 24 import dwtx.jface.text.contentassist.ICompletionProposalExtension6; // packageimport | |
| 25 import dwtx.jface.text.contentassist.ICompletionListener; // packageimport | |
| 26 import dwtx.jface.text.contentassist.ICompletionProposalExtension2; // packageimport | |
| 27 import dwtx.jface.text.contentassist.IContentAssistantExtension4; // packageimport | |
| 28 import dwtx.jface.text.contentassist.ContextInformation; // packageimport | |
| 29 import dwtx.jface.text.contentassist.ICompletionProposalExtension3; // packageimport | |
| 30 import dwtx.jface.text.contentassist.ContextInformationValidator; // packageimport | |
| 31 import dwtx.jface.text.contentassist.ICompletionProposal; // packageimport | |
| 32 import dwtx.jface.text.contentassist.IContentAssistProcessor; // packageimport | |
| 33 import dwtx.jface.text.contentassist.AdditionalInfoController; // packageimport | |
| 34 import dwtx.jface.text.contentassist.IContextInformationPresenter; // packageimport | |
| 35 import dwtx.jface.text.contentassist.ICompletionProposalExtension4; // packageimport | |
| 36 import dwtx.jface.text.contentassist.ICompletionListenerExtension; // packageimport | |
| 37 import dwtx.jface.text.contentassist.ContextInformationPopup; // packageimport | |
| 38 import dwtx.jface.text.contentassist.IContextInformationExtension; // packageimport | |
| 39 import dwtx.jface.text.contentassist.IContentAssistantExtension2; // packageimport | |
| 40 import dwtx.jface.text.contentassist.ContentAssistSubjectControlAdapter; // packageimport | |
| 41 import dwtx.jface.text.contentassist.ICompletionProposalExtension; // packageimport | |
| 42 import dwtx.jface.text.contentassist.IContextInformation; // packageimport | |
| 43 import dwtx.jface.text.contentassist.IContentAssistantExtension3; // packageimport | |
| 44 import dwtx.jface.text.contentassist.ContentAssistant; // packageimport | |
| 45 import dwtx.jface.text.contentassist.IContentAssistantExtension; // packageimport | |
| 46 import dwtx.jface.text.contentassist.JFaceTextMessages; // packageimport | |
| 47 | |
| 48 | |
| 129 | 49 import dwt.dwthelper.utils; |
| 50 | |
|
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51 import dwtx.dwtxhelper.Collection; |
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52 |
| 129 | 53 |
| 54 import dwt.DWT; | |
| 55 import dwt.custom.BusyIndicator; | |
| 56 import dwt.custom.StyleRange; | |
| 57 import dwt.events.ControlEvent; | |
| 58 import dwt.events.ControlListener; | |
| 59 import dwt.events.DisposeEvent; | |
| 60 import dwt.events.DisposeListener; | |
| 61 import dwt.events.FocusEvent; | |
| 62 import dwt.events.FocusListener; | |
| 63 import dwt.events.KeyAdapter; | |
| 64 import dwt.events.KeyEvent; | |
| 65 import dwt.events.KeyListener; | |
| 66 import dwt.events.MouseAdapter; | |
| 67 import dwt.events.MouseEvent; | |
| 68 import dwt.events.SelectionEvent; | |
| 69 import dwt.events.SelectionListener; | |
| 70 import dwt.events.TraverseEvent; | |
| 71 import dwt.events.TraverseListener; | |
| 72 import dwt.events.VerifyEvent; | |
| 73 import dwt.graphics.Color; | |
| 74 import dwt.graphics.Font; | |
| 75 import dwt.graphics.FontData; | |
| 76 import dwt.graphics.Image; | |
| 77 import dwt.graphics.Point; | |
| 78 import dwt.graphics.Rectangle; | |
| 79 import dwt.layout.GridData; | |
| 80 import dwt.layout.GridLayout; | |
| 81 import dwt.widgets.Control; | |
| 82 import dwt.widgets.Display; | |
| 83 import dwt.widgets.Event; | |
| 84 import dwt.widgets.Label; | |
| 85 import dwt.widgets.Listener; | |
| 86 import dwt.widgets.Shell; | |
| 87 import dwt.widgets.Table; | |
| 88 import dwt.widgets.TableItem; | |
| 89 import dwtx.core.commands.AbstractHandler; | |
| 90 import dwtx.core.commands.ExecutionEvent; | |
| 91 import dwtx.core.commands.ExecutionException; | |
| 92 import dwtx.core.commands.IHandler; | |
| 93 import dwtx.core.runtime.Assert; | |
| 94 import dwtx.jface.bindings.keys.KeySequence; | |
| 95 import dwtx.jface.bindings.keys.SWTKeySupport; | |
| 96 import dwtx.jface.contentassist.IContentAssistSubjectControl; | |
| 97 import dwtx.jface.internal.text.InformationControlReplacer; | |
| 98 import dwtx.jface.internal.text.TableOwnerDrawSupport; | |
| 99 import dwtx.jface.preference.JFacePreferences; | |
| 100 import dwtx.jface.resource.JFaceResources; | |
| 101 import dwtx.jface.text.AbstractInformationControlManager; | |
| 102 import dwtx.jface.text.BadLocationException; | |
| 103 import dwtx.jface.text.DocumentEvent; | |
| 104 import dwtx.jface.text.IDocument; | |
| 105 import dwtx.jface.text.IDocumentListener; | |
| 106 import dwtx.jface.text.IEditingSupport; | |
| 107 import dwtx.jface.text.IEditingSupportRegistry; | |
| 108 import dwtx.jface.text.IInformationControl; | |
| 109 import dwtx.jface.text.IRegion; | |
| 110 import dwtx.jface.text.IRewriteTarget; | |
| 111 import dwtx.jface.text.ITextViewer; | |
| 112 import dwtx.jface.text.ITextViewerExtension; | |
| 113 import dwtx.jface.text.TextUtilities; | |
| 158 | 114 import dwtx.jface.text.AbstractInformationControlManager; |
| 129 | 115 import dwtx.jface.util.Geometry; |
| 116 import dwtx.jface.viewers.StyledString; | |
| 117 | |
| 118 | |
| 119 /** | |
| 120 * This class is used to present proposals to the user. If additional | |
| 121 * information exists for a proposal, then selecting that proposal | |
| 122 * will result in the information being displayed in a secondary | |
| 123 * window. | |
| 124 * | |
| 125 * @see dwtx.jface.text.contentassist.ICompletionProposal | |
| 126 * @see dwtx.jface.text.contentassist.AdditionalInfoController | |
| 127 */ | |
| 128 class CompletionProposalPopup : IContentAssistListener { | |
| 129 /** | |
| 130 * Set to <code>true</code> to use a Table with DWT.VIRTUAL. | |
| 131 * XXX: This is a workaround for: https://bugs.eclipse.org/bugs/show_bug.cgi?id=90321 | |
| 132 * More details see also: https://bugs.eclipse.org/bugs/show_bug.cgi?id=98585#c36 | |
| 133 * @since 3.1 | |
| 134 */ | |
| 159 | 135 private static bool USE_VIRTUAL_; |
| 136 private static bool USE_VIRTUAL_init = false;; | |
| 137 private static bool USE_VIRTUAL(){ | |
| 138 if( !USE_VIRTUAL_init ){ | |
| 139 USE_VIRTUAL_init = true; | |
| 140 USE_VIRTUAL_ = !"motif".equals(DWT.getPlatform()); //$NON-NLS-1$ | |
| 141 } | |
| 142 return USE_VIRTUAL_; | |
| 143 } | |
| 129 | 144 |
| 145 /** | |
| 146 * Completion proposal selection handler. | |
|
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147 * |
| 129 | 148 * @since 3.4 |
| 149 */ | |
| 150 final class ProposalSelectionHandler : AbstractHandler { | |
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151 |
| 129 | 152 /** |
| 153 * Selection operation codes. | |
| 154 */ | |
| 159 | 155 static const int SELECT_NEXT= 1; |
| 156 static const int SELECT_PREVIOUS= 2; | |
| 129 | 157 |
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158 |
| 129 | 159 private int fOperationCode; |
| 160 | |
| 161 /** | |
| 162 * Creates a new selection handler. | |
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163 * |
| 129 | 164 * @param operationCode the operation code |
| 165 * @since 3.4 | |
| 166 */ | |
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167 public this(int operationCode) { |
| 129 | 168 Assert.isLegal(operationCode is SELECT_NEXT || operationCode is SELECT_PREVIOUS); |
| 169 fOperationCode= operationCode; | |
| 170 } | |
| 171 | |
| 172 /* | |
| 173 * @see dwtx.core.commands.AbstractHandler#execute(dwtx.core.commands.ExecutionEvent) | |
| 174 * @since 3.4 | |
| 175 */ | |
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176 public Object execute(ExecutionEvent event) { |
| 129 | 177 int itemCount= fProposalTable.getItemCount(); |
| 178 int selectionIndex= fProposalTable.getSelectionIndex(); | |
| 179 switch (fOperationCode) { | |
| 180 case SELECT_NEXT: | |
| 181 selectionIndex+= 1; | |
| 182 if (selectionIndex > itemCount - 1) | |
| 183 selectionIndex= 0; | |
| 184 break; | |
| 185 case SELECT_PREVIOUS: | |
| 186 selectionIndex-= 1; | |
| 187 if (selectionIndex < 0) | |
| 188 selectionIndex= itemCount - 1; | |
| 189 break; | |
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190 default: |
| 129 | 191 } |
| 192 selectProposal(selectionIndex, false); | |
| 193 return null; | |
| 194 } | |
| 195 | |
| 196 } | |
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197 |
| 129 | 198 |
| 199 /** | |
| 200 * The empty proposal displayed if there is nothing else to show. | |
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201 * |
| 129 | 202 * @since 3.2 |
| 203 */ | |
| 204 private static final class EmptyProposal : ICompletionProposal, ICompletionProposalExtension { | |
| 205 | |
| 206 String fDisplayString; | |
| 207 int fOffset; | |
| 208 /* | |
| 209 * @see ICompletionProposal#apply(IDocument) | |
| 210 */ | |
| 211 public void apply(IDocument document) { | |
| 212 } | |
| 213 | |
| 214 /* | |
| 215 * @see ICompletionProposal#getSelection(IDocument) | |
| 216 */ | |
| 217 public Point getSelection(IDocument document) { | |
| 218 return new Point(fOffset, 0); | |
| 219 } | |
| 220 | |
| 221 /* | |
| 222 * @see ICompletionProposal#getContextInformation() | |
| 223 */ | |
| 224 public IContextInformation getContextInformation() { | |
| 225 return null; | |
| 226 } | |
| 227 | |
| 228 /* | |
| 229 * @see ICompletionProposal#getImage() | |
| 230 */ | |
| 231 public Image getImage() { | |
| 232 return null; | |
| 233 } | |
| 234 | |
| 235 /* | |
| 236 * @see ICompletionProposal#getDisplayString() | |
| 237 */ | |
| 238 public String getDisplayString() { | |
| 239 return fDisplayString; | |
| 240 } | |
| 241 | |
| 242 /* | |
| 243 * @see ICompletionProposal#getAdditionalProposalInfo() | |
| 244 */ | |
| 245 public String getAdditionalProposalInfo() { | |
| 246 return null; | |
| 247 } | |
| 248 | |
| 249 /* | |
| 250 * @see dwtx.jface.text.contentassist.ICompletionProposalExtension#apply(dwtx.jface.text.IDocument, char, int) | |
| 251 */ | |
| 252 public void apply(IDocument document, char trigger, int offset) { | |
| 253 } | |
| 254 | |
| 255 /* | |
| 256 * @see dwtx.jface.text.contentassist.ICompletionProposalExtension#isValidFor(dwtx.jface.text.IDocument, int) | |
| 257 */ | |
| 258 public bool isValidFor(IDocument document, int offset) { | |
| 259 return false; | |
| 260 } | |
| 261 | |
| 262 /* | |
| 263 * @see dwtx.jface.text.contentassist.ICompletionProposalExtension#getTriggerCharacters() | |
| 264 */ | |
| 265 public char[] getTriggerCharacters() { | |
| 266 return null; | |
| 267 } | |
| 268 | |
| 269 /* | |
| 270 * @see dwtx.jface.text.contentassist.ICompletionProposalExtension#getContextInformationPosition() | |
| 271 */ | |
| 272 public int getContextInformationPosition() { | |
| 273 return -1; | |
| 274 } | |
| 275 } | |
| 276 | |
| 277 private final class ProposalSelectionListener : KeyListener { | |
| 278 public void keyPressed(KeyEvent e) { | |
| 279 if (!Helper.okToUse(fProposalShell)) | |
| 280 return; | |
| 281 | |
| 282 if (e.character is 0 && e.keyCode is DWT.CTRL) { | |
| 283 // http://dev.eclipse.org/bugs/show_bug.cgi?id=34754 | |
| 284 int index= fProposalTable.getSelectionIndex(); | |
| 285 if (index >= 0) | |
| 286 selectProposal(index, true); | |
| 287 } | |
| 288 } | |
| 289 | |
| 290 public void keyReleased(KeyEvent e) { | |
| 291 if (!Helper.okToUse(fProposalShell)) | |
| 292 return; | |
| 293 | |
| 294 if (e.character is 0 && e.keyCode is DWT.CTRL) { | |
| 295 // http://dev.eclipse.org/bugs/show_bug.cgi?id=34754 | |
| 296 int index= fProposalTable.getSelectionIndex(); | |
| 297 if (index >= 0) | |
| 298 selectProposal(index, false); | |
| 299 } | |
| 300 } | |
| 301 } | |
| 302 | |
| 303 private final class CommandKeyListener : KeyAdapter { | |
| 304 private KeySequence fCommandSequence; | |
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305 |
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306 private this(KeySequence keySequence) { |
| 129 | 307 fCommandSequence= keySequence; |
| 308 } | |
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309 |
| 129 | 310 public void keyPressed(KeyEvent e) { |
| 311 if (!Helper.okToUse(fProposalShell)) | |
| 312 return; | |
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313 |
| 129 | 314 int accelerator= SWTKeySupport.convertEventToUnmodifiedAccelerator(e); |
| 315 KeySequence sequence= KeySequence.getInstance(SWTKeySupport.convertAcceleratorToKeyStroke(accelerator)); | |
| 162 | 316 if (sequence==/++/fCommandSequence) |
| 129 | 317 if (fContentAssistant.isPrefixCompletionEnabled()) |
| 318 incrementalComplete(); | |
| 319 else | |
| 320 showProposals(false); | |
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321 |
| 129 | 322 } |
| 323 } | |
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324 |
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325 |
| 129 | 326 /** The associated text viewer. */ |
| 327 private ITextViewer fViewer; | |
| 328 /** The associated content assistant. */ | |
| 329 private ContentAssistant fContentAssistant; | |
| 330 /** The used additional info controller. */ | |
| 331 private AdditionalInfoController fAdditionalInfoController; | |
| 332 /** The closing strategy for this completion proposal popup. */ | |
| 159 | 333 private PopupCloser fPopupCloser; |
| 129 | 334 /** The popup shell. */ |
| 335 private Shell fProposalShell; | |
| 336 /** The proposal table. */ | |
| 337 private Table fProposalTable; | |
| 338 /** Indicates whether a completion proposal is being inserted. */ | |
| 339 private bool fInserting= false; | |
| 340 /** The key listener to control navigation. */ | |
| 341 private ProposalSelectionListener fKeyListener; | |
| 342 /** List of document events used for filtering proposals. */ | |
| 159 | 343 private List fDocumentEvents; |
| 129 | 344 /** Listener filling the document event queue. */ |
| 345 private IDocumentListener fDocumentListener; | |
| 346 /** The filter list of proposals. */ | |
| 347 private ICompletionProposal[] fFilteredProposals; | |
| 348 /** The computed list of proposals. */ | |
| 349 private ICompletionProposal[] fComputedProposals; | |
| 350 /** The offset for which the proposals have been computed. */ | |
| 351 private int fInvocationOffset; | |
| 352 /** The offset for which the computed proposals have been filtered. */ | |
| 353 private int fFilterOffset; | |
| 354 /** | |
| 355 * The most recently selected proposal. | |
| 356 * @since 3.0 | |
| 357 */ | |
| 358 private ICompletionProposal fLastProposal; | |
| 359 /** | |
| 360 * The content assist subject control. | |
| 361 * This replaces <code>fViewer</code> | |
| 362 * | |
| 363 * @since 3.0 | |
| 364 */ | |
| 365 private IContentAssistSubjectControl fContentAssistSubjectControl; | |
| 366 /** | |
| 367 * The content assist subject control adapter. | |
| 368 * This replaces <code>fViewer</code> | |
| 369 * | |
| 370 * @since 3.0 | |
| 371 */ | |
| 372 private ContentAssistSubjectControlAdapter fContentAssistSubjectControlAdapter; | |
| 373 /** | |
| 374 * Remembers the size for this completion proposal popup. | |
| 375 * @since 3.0 | |
| 376 */ | |
| 377 private Point fSize; | |
| 378 /** | |
| 379 * Editor helper that communicates that the completion proposal popup may | |
| 380 * have focus while the 'logical focus' is still with the editor. | |
| 381 * @since 3.1 | |
| 382 */ | |
| 383 private IEditingSupport fFocusHelper; | |
| 384 /** | |
| 385 * Set to true by {@link #computeFilteredProposals(int, DocumentEvent)} if | |
| 386 * the returned proposals are a subset of {@link #fFilteredProposals}, | |
| 387 * <code>false</code> if not. | |
| 388 * @since 3.1 | |
| 389 */ | |
| 390 private bool fIsFilteredSubset; | |
| 391 /** | |
| 392 * The filter runnable. | |
|
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393 * |
| 129 | 394 * @since 3.1.1 |
| 395 */ | |
| 159 | 396 private Runnable fFilterRunnable; |
| 397 private void fFilterRunnableInit(){ | |
| 398 fFilterRunnable = dgRunnable( { | |
| 129 | 399 if (!fIsFilterPending) |
| 400 return; | |
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401 |
| 129 | 402 fIsFilterPending= false; |
| 403 | |
| 404 if (!Helper.okToUse(fContentAssistSubjectControlAdapter.getControl())) | |
| 405 return; | |
| 406 | |
| 407 int offset= fContentAssistSubjectControlAdapter.getSelectedRange().x; | |
| 408 ICompletionProposal[] proposals= null; | |
| 409 try { | |
| 410 if (offset > -1) { | |
| 411 DocumentEvent event= TextUtilities.mergeProcessedDocumentEvents(fDocumentEvents); | |
| 412 proposals= computeFilteredProposals(offset, event); | |
| 413 } | |
| 414 } catch (BadLocationException x) { | |
| 415 } finally { | |
| 416 fDocumentEvents.clear(); | |
| 417 } | |
| 418 fFilterOffset= offset; | |
| 419 | |
| 420 if (proposals !is null && proposals.length > 0) | |
| 421 setProposals(proposals, fIsFilteredSubset); | |
| 422 else | |
| 423 hide(); | |
| 159 | 424 }); |
| 425 } | |
| 426 | |
| 129 | 427 /** |
| 428 * <code>true</code> if <code>fFilterRunnable</code> has been | |
| 429 * posted, <code>false</code> if not. | |
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430 * |
| 129 | 431 * @since 3.1.1 |
| 432 */ | |
| 433 private bool fIsFilterPending= false; | |
| 434 /** | |
| 435 * The info message at the bottom of the popup, or <code>null</code> for no popup (if | |
| 436 * ContentAssistant does not provide one). | |
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437 * |
| 129 | 438 * @since 3.2 |
| 439 */ | |
| 440 private Label fMessageText; | |
| 441 /** | |
| 442 * The font used for <code>fMessageText</code> or null; dispose when done. | |
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443 * |
| 129 | 444 * @since 3.2 |
| 445 */ | |
| 446 private Font fMessageTextFont; | |
| 447 /** | |
| 448 * The most recent completion offset (used to determine repeated invocation) | |
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449 * |
| 129 | 450 * @since 3.2 |
| 451 */ | |
| 452 private int fLastCompletionOffset; | |
| 453 /** | |
| 454 * The (reusable) empty proposal. | |
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455 * |
| 129 | 456 * @since 3.2 |
| 457 */ | |
| 159 | 458 private EmptyProposal fEmptyProposal; |
| 129 | 459 /** |
| 460 * The text for the empty proposal, or <code>null</code> to use the default text. | |
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461 * |
| 129 | 462 * @since 3.2 |
| 463 */ | |
| 464 private String fEmptyMessage= null; | |
| 465 /** | |
| 466 * Tells whether colored labels support is enabled. | |
| 467 * Only valid while the popup is active. | |
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468 * |
| 129 | 469 * @since 3.4 |
| 470 */ | |
| 471 private bool fIsColoredLabelsSupportEnabled= false; | |
| 472 | |
|
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473 |
| 129 | 474 /** |
| 475 * Creates a new completion proposal popup for the given elements. | |
| 476 * | |
| 477 * @param contentAssistant the content assistant feeding this popup | |
| 478 * @param viewer the viewer on top of which this popup appears | |
| 479 * @param infoController the information control collaborating with this popup | |
| 480 * @since 2.0 | |
| 481 */ | |
|
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482 public this(ContentAssistant contentAssistant, ITextViewer viewer, AdditionalInfoController infoController) { |
| 159 | 483 // DWT instance init |
| 484 fDocumentEvents= new ArrayList(); | |
| 485 fPopupCloser= new PopupCloser(); | |
| 486 if( fEmptyProposal is null ) fEmptyProposal= new EmptyProposal(); | |
| 487 fFilterRunnableInit(); | |
| 488 | |
| 129 | 489 fContentAssistant= contentAssistant; |
| 490 fViewer= viewer; | |
| 491 fAdditionalInfoController= infoController; | |
| 492 fContentAssistSubjectControlAdapter= new ContentAssistSubjectControlAdapter(fViewer); | |
| 493 } | |
| 494 | |
| 495 /** | |
| 496 * Creates a new completion proposal popup for the given elements. | |
| 497 * | |
| 498 * @param contentAssistant the content assistant feeding this popup | |
| 499 * @param contentAssistSubjectControl the content assist subject control on top of which this popup appears | |
| 500 * @param infoController the information control collaborating with this popup | |
| 501 * @since 3.0 | |
| 502 */ | |
|
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503 public this(ContentAssistant contentAssistant, IContentAssistSubjectControl contentAssistSubjectControl, AdditionalInfoController infoController) { |
| 159 | 504 // DWT instance init |
| 505 fDocumentEvents= new ArrayList(); | |
| 506 fPopupCloser= new PopupCloser(); | |
| 507 if( fEmptyProposal is null ) fEmptyProposal= new EmptyProposal(); | |
| 508 fFilterRunnableInit(); | |
| 509 | |
| 129 | 510 fContentAssistant= contentAssistant; |
| 511 fContentAssistSubjectControl= contentAssistSubjectControl; | |
| 512 fAdditionalInfoController= infoController; | |
| 513 fContentAssistSubjectControlAdapter= new ContentAssistSubjectControlAdapter(fContentAssistSubjectControl); | |
| 514 } | |
| 515 | |
| 516 /** | |
| 517 * Computes and presents completion proposals. The flag indicates whether this call has | |
| 518 * be made out of an auto activation context. | |
| 519 * | |
| 520 * @param autoActivated <code>true</code> if auto activation context | |
| 521 * @return an error message or <code>null</code> in case of no error | |
| 522 */ | |
| 158 | 523 public String showProposals(bool autoActivated) { |
| 129 | 524 |
| 525 if (fKeyListener is null) | |
| 526 fKeyListener= new ProposalSelectionListener(); | |
| 527 | |
| 528 final Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 529 | |
| 530 if (!Helper.okToUse(fProposalShell) && control !is null && !control.isDisposed()) { | |
| 531 // add the listener before computing the proposals so we don't move the caret | |
| 532 // when the user types fast. | |
| 533 fContentAssistSubjectControlAdapter.addKeyListener(fKeyListener); | |
| 534 | |
| 158 | 535 BusyIndicator.showWhile(control.getDisplay(), dgRunnable((bool autoActivated_) { |
| 129 | 536 |
| 158 | 537 fInvocationOffset= fContentAssistSubjectControlAdapter.getSelectedRange().x; |
| 538 fFilterOffset= fInvocationOffset; | |
| 539 fLastCompletionOffset= fFilterOffset; | |
| 540 fComputedProposals= computeProposals(fInvocationOffset); | |
| 129 | 541 |
| 158 | 542 int count= (fComputedProposals is null ? 0 : fComputedProposals.length); |
| 543 if (count is 0 && hideWhenNoProposals(autoActivated_)) | |
| 544 return; | |
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545 |
| 158 | 546 if (count is 1 && !autoActivated_ && canAutoInsert(fComputedProposals[0])) { |
| 547 insertProposal(fComputedProposals[0], cast(wchar) 0, 0, fInvocationOffset); | |
| 548 hide(); | |
| 549 } else { | |
| 550 createProposalSelector(); | |
| 551 setProposals(fComputedProposals, false); | |
| 552 displayProposals(); | |
| 129 | 553 } |
| 158 | 554 }, autoActivated )); |
| 129 | 555 } else { |
| 556 fLastCompletionOffset= fFilterOffset; | |
| 557 handleRepeatedInvocation(); | |
| 558 } | |
| 559 | |
| 560 return getErrorMessage(); | |
| 561 } | |
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562 |
| 129 | 563 /** |
| 564 * Hides the popup and returns <code>true</code> if the popup is configured | |
| 565 * to never display an empty list. Returns <code>false</code> otherwise. | |
|
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566 * |
| 129 | 567 * @param autoActivated whether the invocation was auto-activated |
| 568 * @return <code>false</code> if an empty list should be displayed, <code>true</code> otherwise | |
| 569 * @since 3.2 | |
| 570 */ | |
| 571 private bool hideWhenNoProposals(bool autoActivated) { | |
| 572 if (autoActivated || !fContentAssistant.isShowEmptyList()) { | |
| 573 if (!autoActivated) { | |
| 574 Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 575 if (control !is null && !control.isDisposed()) | |
| 576 control.getDisplay().beep(); | |
| 577 } | |
| 578 hide(); | |
| 579 return true; | |
| 580 } | |
| 581 return false; | |
| 582 } | |
| 583 | |
| 584 /** | |
| 585 * If content assist is set up to handle cycling, then the proposals are recomputed. Otherwise, | |
| 586 * nothing happens. | |
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587 * |
| 129 | 588 * @since 3.2 |
| 589 */ | |
| 590 private void handleRepeatedInvocation() { | |
| 591 if (fContentAssistant.isRepeatedInvocationMode()) { | |
| 592 fComputedProposals= computeProposals(fFilterOffset); | |
| 593 setProposals(fComputedProposals, false); | |
| 594 } | |
| 595 } | |
| 596 | |
| 597 /** | |
| 598 * Returns the completion proposal available at the given offset of the | |
| 599 * viewer's document. Delegates the work to the content assistant. | |
| 600 * | |
| 601 * @param offset the offset | |
| 602 * @return the completion proposals available at this offset | |
| 603 */ | |
| 604 private ICompletionProposal[] computeProposals(int offset) { | |
| 605 if (fContentAssistSubjectControl !is null) | |
| 606 return fContentAssistant.computeCompletionProposals(fContentAssistSubjectControl, offset); | |
| 607 return fContentAssistant.computeCompletionProposals(fViewer, offset); | |
| 608 } | |
| 609 | |
| 610 /** | |
| 611 * Returns the error message. | |
| 612 * | |
| 613 * @return the error message | |
| 614 */ | |
| 615 private String getErrorMessage() { | |
| 616 return fContentAssistant.getErrorMessage(); | |
| 617 } | |
| 618 | |
| 619 /** | |
| 620 * Creates the proposal selector. | |
| 621 */ | |
| 622 private void createProposalSelector() { | |
| 623 if (Helper.okToUse(fProposalShell)) | |
| 624 return; | |
| 625 | |
| 626 Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 627 fProposalShell= new Shell(control.getShell(), DWT.ON_TOP | DWT.RESIZE ); | |
| 628 fProposalShell.setFont(JFaceResources.getDefaultFont()); | |
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629 if (USE_VIRTUAL) { |
| 129 | 630 fProposalTable= new Table(fProposalShell, DWT.H_SCROLL | DWT.V_SCROLL | DWT.VIRTUAL); |
| 631 | |
| 135 | 632 Listener listener= new class() Listener { |
| 129 | 633 public void handleEvent(Event event) { |
| 634 handleSetData(event); | |
| 635 } | |
| 636 }; | |
| 637 fProposalTable.addListener(DWT.SetData, listener); | |
| 638 } else { | |
| 639 fProposalTable= new Table(fProposalShell, DWT.H_SCROLL | DWT.V_SCROLL); | |
| 640 } | |
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641 |
| 129 | 642 fIsColoredLabelsSupportEnabled= fContentAssistant.isColoredLabelsSupportEnabled(); |
| 643 if (fIsColoredLabelsSupportEnabled) | |
| 644 TableOwnerDrawSupport.install(fProposalTable); | |
| 645 | |
| 646 fProposalTable.setLocation(0, 0); | |
| 647 if (fAdditionalInfoController !is null) | |
| 648 fAdditionalInfoController.setSizeConstraints(50, 10, true, true); | |
| 649 | |
| 650 GridLayout layout= new GridLayout(); | |
| 651 layout.marginWidth= 0; | |
| 652 layout.marginHeight= 0; | |
| 653 layout.verticalSpacing= 1; | |
| 654 fProposalShell.setLayout(layout); | |
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655 |
| 129 | 656 if (fContentAssistant.isStatusLineVisible()) { |
| 657 createMessageText(); | |
| 658 } | |
| 659 | |
| 660 GridData data= new GridData(GridData.FILL_BOTH); | |
| 661 | |
| 162 | 662 Point size= fContentAssistant.restoreCompletionProposalPopupSize_package(); |
| 129 | 663 if (size !is null) { |
| 664 fProposalTable.setLayoutData(data); | |
| 665 fProposalShell.setSize(size); | |
| 666 } else { | |
| 667 int height= fProposalTable.getItemHeight() * 10; | |
| 668 // use golden ratio as default aspect ratio | |
| 162 | 669 double aspectRatio= (1 + Math.sqrt(5.0f)) / 2; |
| 134 | 670 int width= cast(int) (height * aspectRatio); |
| 129 | 671 Rectangle trim= fProposalTable.computeTrim(0, 0, width, height); |
| 672 data.heightHint= trim.height; | |
| 673 data.widthHint= trim.width; | |
| 674 fProposalTable.setLayoutData(data); | |
| 675 fProposalShell.pack(); | |
| 676 } | |
| 677 fContentAssistant.addToLayout(this, fProposalShell, ContentAssistant.LayoutManager.LAYOUT_PROPOSAL_SELECTOR, fContentAssistant.getSelectionOffset()); | |
| 678 | |
| 135 | 679 fProposalShell.addControlListener(new class() ControlListener { |
| 129 | 680 |
| 681 public void controlMoved(ControlEvent e) {} | |
| 682 | |
| 683 public void controlResized(ControlEvent e) { | |
| 684 if (fAdditionalInfoController !is null) { | |
| 685 // reset the cached resize constraints | |
| 686 fAdditionalInfoController.setSizeConstraints(50, 10, true, false); | |
| 687 } | |
| 688 | |
| 689 fSize= fProposalShell.getSize(); | |
| 690 } | |
| 691 }); | |
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692 |
| 129 | 693 fProposalShell.setBackground(control.getDisplay().getSystemColor(DWT.COLOR_GRAY)); |
| 694 | |
| 695 Color c= getBackgroundColor(control); | |
| 696 fProposalTable.setBackground(c); | |
| 697 | |
| 698 c= getForegroundColor(control); | |
| 699 fProposalTable.setForeground(c); | |
| 700 | |
| 135 | 701 fProposalTable.addSelectionListener(new class() SelectionListener { |
| 129 | 702 |
| 703 public void widgetSelected(SelectionEvent e) {} | |
| 704 | |
| 705 public void widgetDefaultSelected(SelectionEvent e) { | |
| 706 insertSelectedProposalWithMask(e.stateMask); | |
| 707 } | |
| 708 }); | |
| 709 | |
| 710 fPopupCloser.install(fContentAssistant, fProposalTable, fAdditionalInfoController); | |
| 711 | |
| 135 | 712 fProposalShell.addDisposeListener(new class() DisposeListener { |
| 129 | 713 public void widgetDisposed(DisposeEvent e) { |
| 714 unregister(); // but don't dispose the shell, since we're being called from its disposal event! | |
| 715 } | |
| 716 }); | |
| 717 | |
| 718 fProposalTable.setHeaderVisible(false); | |
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719 |
| 129 | 720 addCommandSupport(fProposalTable); |
| 721 } | |
| 722 | |
| 723 /** | |
| 724 * Returns the minimal required height for the proposal, may return 0 if the popup has not been | |
| 725 * created yet. | |
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726 * |
| 129 | 727 * @return the minimal height |
| 728 * @since 3.3 | |
| 729 */ | |
| 730 int getMinimalHeight() { | |
| 731 int height= 0; | |
| 732 if (Helper.okToUse(fProposalTable)) { | |
| 733 int items= fProposalTable.getItemHeight() * 10; | |
| 734 Rectangle trim= fProposalTable.computeTrim(0, 0, DWT.DEFAULT, items); | |
| 735 height= trim.height; | |
| 736 } | |
| 737 if (Helper.okToUse(fMessageText)) | |
| 738 height+= fMessageText.getSize().y + 1; | |
| 739 return height; | |
| 740 } | |
| 741 | |
| 742 /** | |
| 743 * Adds command support to the given control. | |
|
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744 * |
| 129 | 745 * @param control the control to watch for focus |
| 746 * @since 3.2 | |
| 747 */ | |
| 158 | 748 private void addCommandSupport(Control control) { |
| 129 | 749 final KeySequence commandSequence= fContentAssistant.getRepeatedInvocationKeySequence(); |
| 750 if (commandSequence !is null && !commandSequence.isEmpty() && fContentAssistant.isRepeatedInvocationMode()) { | |
| 158 | 751 control.addFocusListener(new class(control,commandSequence) FocusListener { |
| 752 Control control_; | |
| 753 KeySequence commandSequence_; | |
| 754 this(Control a, KeySequence b){ | |
| 755 control_=a; | |
| 756 commandSequence_=b; | |
| 757 } | |
| 129 | 758 private CommandKeyListener fCommandKeyListener; |
| 759 public void focusGained(FocusEvent e) { | |
| 158 | 760 if (Helper.okToUse(control_)) { |
| 129 | 761 if (fCommandKeyListener is null) { |
| 158 | 762 fCommandKeyListener= new CommandKeyListener(commandSequence_); |
| 129 | 763 fProposalTable.addKeyListener(fCommandKeyListener); |
| 764 } | |
| 765 } | |
| 766 } | |
| 767 public void focusLost(FocusEvent e) { | |
| 768 if (fCommandKeyListener !is null) { | |
| 158 | 769 control_.removeKeyListener(fCommandKeyListener); |
| 129 | 770 fCommandKeyListener= null; |
| 771 } | |
| 772 } | |
| 773 }); | |
| 774 } | |
| 158 | 775 control.addFocusListener(new class(control) FocusListener { |
| 776 Control control_; | |
| 129 | 777 private TraverseListener fTraverseListener; |
| 158 | 778 this(Control a){ |
| 779 control_=a; | |
| 780 } | |
| 129 | 781 public void focusGained(FocusEvent e) { |
| 158 | 782 if (Helper.okToUse(control_)) { |
| 129 | 783 if (fTraverseListener is null) { |
| 135 | 784 fTraverseListener= new class() TraverseListener { |
| 129 | 785 public void keyTraversed(TraverseEvent event) { |
| 786 if (event.detail is DWT.TRAVERSE_TAB_NEXT) { | |
| 787 IInformationControl iControl= fAdditionalInfoController.getCurrentInformationControl2(); | |
| 788 if (fAdditionalInfoController.getInternalAccessor().canReplace(iControl)) { | |
| 789 fAdditionalInfoController.getInternalAccessor().replaceInformationControl(true); | |
| 790 event.doit= false; | |
| 791 } | |
| 792 } | |
| 793 } | |
| 794 }; | |
| 795 fProposalTable.addTraverseListener(fTraverseListener); | |
| 796 } | |
| 797 } | |
| 798 } | |
| 799 public void focusLost(FocusEvent e) { | |
| 800 if (fTraverseListener !is null) { | |
| 158 | 801 control_.removeTraverseListener(fTraverseListener); |
| 129 | 802 fTraverseListener= null; |
| 803 } | |
| 804 } | |
| 805 }); | |
| 806 } | |
| 807 | |
| 808 /** | |
| 809 * Returns the background color to use. | |
|
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810 * |
| 129 | 811 * @param control the control to get the display from |
| 812 * @return the background color | |
| 813 * @since 3.2 | |
| 814 */ | |
| 815 private Color getBackgroundColor(Control control) { | |
| 816 Color c= fContentAssistant.getProposalSelectorBackground(); | |
| 817 if (c is null) | |
| 818 c= JFaceResources.getColorRegistry().get(JFacePreferences.CONTENT_ASSIST_BACKGROUND_COLOR); | |
| 819 return c; | |
| 820 } | |
| 821 | |
| 822 /** | |
| 823 * Returns the foreground color to use. | |
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824 * |
| 129 | 825 * @param control the control to get the display from |
| 826 * @return the foreground color | |
| 827 * @since 3.2 | |
| 828 */ | |
| 829 private Color getForegroundColor(Control control) { | |
| 830 Color c= fContentAssistant.getProposalSelectorForeground(); | |
| 831 if (c is null) | |
| 832 c= JFaceResources.getColorRegistry().get(JFacePreferences.CONTENT_ASSIST_FOREGROUND_COLOR); | |
| 833 return c; | |
| 834 } | |
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835 |
| 129 | 836 /** |
| 837 * Creates the caption line under the proposal table. | |
|
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838 * |
| 129 | 839 * @since 3.2 |
| 840 */ | |
| 841 private void createMessageText() { | |
| 842 if (fMessageText is null) { | |
| 843 fMessageText= new Label(fProposalShell, DWT.RIGHT); | |
| 844 GridData textData= new GridData(DWT.FILL, DWT.BOTTOM, true, false); | |
| 845 fMessageText.setLayoutData(textData); | |
| 162 | 846 fMessageText.setText(fContentAssistant.getStatusMessage() ~ " "); //$NON-NLS-1$ |
| 129 | 847 if (fMessageTextFont is null) { |
| 848 Font font= fMessageText.getFont(); | |
| 849 Display display= fProposalShell.getDisplay(); | |
| 850 FontData[] fontDatas= font.getFontData(); | |
| 851 for (int i= 0; i < fontDatas.length; i++) | |
| 852 fontDatas[i].setHeight(fontDatas[i].getHeight() * 9 / 10); | |
| 853 fMessageTextFont= new Font(display, fontDatas); | |
| 854 } | |
| 855 fMessageText.setFont(fMessageTextFont); | |
| 856 fMessageText.setBackground(getBackgroundColor(fProposalShell)); | |
| 857 fMessageText.setForeground(getForegroundColor(fProposalShell)); | |
| 858 | |
| 859 if (fContentAssistant.isRepeatedInvocationMode()) { | |
| 860 fMessageText.setCursor(fProposalShell.getDisplay().getSystemCursor(DWT.CURSOR_HAND)); | |
| 135 | 861 fMessageText.addMouseListener(new class() MouseAdapter { |
| 129 | 862 public void mouseUp(MouseEvent e) { |
| 863 fLastCompletionOffset= fFilterOffset; | |
| 864 fProposalTable.setFocus(); | |
| 865 handleRepeatedInvocation(); | |
| 866 } | |
| 867 | |
| 868 public void mouseDown(MouseEvent e) { | |
| 869 } | |
| 870 }); | |
| 871 } | |
| 872 } | |
| 873 } | |
| 874 | |
| 875 /* | |
| 876 * @since 3.1 | |
| 877 */ | |
| 878 private void handleSetData(Event event) { | |
| 134 | 879 TableItem item= cast(TableItem) event.item; |
| 129 | 880 int index= fProposalTable.indexOf(item); |
| 881 | |
| 882 if (0 <= index && index < fFilteredProposals.length) { | |
| 883 ICompletionProposal current= fFilteredProposals[index]; | |
| 884 | |
| 885 String displayString; | |
| 886 StyleRange[] styleRanges= null; | |
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887 if (fIsColoredLabelsSupportEnabled && cast(ICompletionProposalExtension6)current ) { |
| 134 | 888 StyledString styledString= (cast(ICompletionProposalExtension6)current).getStyledDisplayString(); |
| 129 | 889 displayString= styledString.getString(); |
| 890 styleRanges= styledString.getStyleRanges(); | |
| 891 } else | |
| 892 displayString= current.getDisplayString(); | |
| 893 | |
| 894 item.setText(displayString); | |
| 895 if (fIsColoredLabelsSupportEnabled) | |
| 896 TableOwnerDrawSupport.storeStyleRanges(item, 0, styleRanges); | |
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897 |
| 129 | 898 item.setImage(current.getImage()); |
| 162 | 899 item.setData(cast(Object)current); |
| 129 | 900 } else { |
| 901 // this should not happen, but does on win32 | |
| 902 } | |
| 903 } | |
| 904 | |
| 905 /** | |
| 906 * Returns the proposal selected in the proposal selector. | |
| 907 * | |
| 908 * @return the selected proposal | |
| 909 * @since 2.0 | |
| 910 */ | |
| 911 private ICompletionProposal getSelectedProposal() { | |
| 912 /* Make sure that there is no filter runnable pending. | |
| 913 * See https://bugs.eclipse.org/bugs/show_bug.cgi?id=31427 | |
| 914 */ | |
| 915 if (fIsFilterPending) | |
| 916 fFilterRunnable.run(); | |
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917 |
| 129 | 918 // filter runnable may have hidden the proposals |
| 919 if (!Helper.okToUse(fProposalTable)) | |
| 920 return null; | |
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921 |
| 129 | 922 int i= fProposalTable.getSelectionIndex(); |
| 923 if (fFilteredProposals is null || i < 0 || i >= fFilteredProposals.length) | |
| 924 return null; | |
| 925 return fFilteredProposals[i]; | |
| 926 } | |
| 927 | |
| 928 /** | |
| 929 * Takes the selected proposal and applies it. | |
| 930 * | |
| 931 * @param stateMask the state mask | |
| 932 * @since 3.2 | |
| 933 */ | |
| 934 private void insertSelectedProposalWithMask(int stateMask) { | |
| 935 ICompletionProposal p= getSelectedProposal(); | |
| 936 hide(); | |
| 937 if (p !is null) | |
| 134 | 938 insertProposal(p, cast(wchar) 0, stateMask, fContentAssistSubjectControlAdapter.getSelectedRange().x); |
| 129 | 939 } |
| 940 | |
| 941 /** | |
| 942 * Applies the given proposal at the given offset. The given character is the | |
| 943 * one that triggered the insertion of this proposal. | |
| 944 * | |
| 945 * @param p the completion proposal | |
| 946 * @param trigger the trigger character | |
| 947 * @param stateMask the state mask | |
| 948 * @param offset the offset | |
| 949 * @since 2.1 | |
| 950 */ | |
| 158 | 951 private void insertProposal(ICompletionProposal p, char trigger, int stateMask, int offset) { |
| 129 | 952 |
| 953 fInserting= true; | |
| 954 IRewriteTarget target= null; | |
| 158 | 955 IEditingSupport helper= new class(offset) IEditingSupport { |
| 956 int offset_; | |
| 957 this(int a){ | |
| 958 offset_=a; | |
| 959 } | |
| 129 | 960 public bool isOriginator(DocumentEvent event, IRegion focus) { |
| 158 | 961 return focus.getOffset() <= offset_ && focus.getOffset() + focus.getLength() >= offset_; |
| 129 | 962 } |
| 963 | |
| 964 public bool ownsFocusShell() { | |
| 965 return false; | |
| 966 } | |
| 967 | |
| 968 }; | |
| 969 | |
| 970 try { | |
| 971 | |
| 972 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 973 | |
| 138 | 974 if ( cast(ITextViewerExtension)fViewer ) { |
| 134 | 975 ITextViewerExtension extension= cast(ITextViewerExtension) fViewer; |
| 129 | 976 target= extension.getRewriteTarget(); |
| 977 } | |
| 978 | |
| 979 if (target !is null) | |
| 980 target.beginCompoundChange(); | |
| 981 | |
| 138 | 982 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 983 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 984 registry.register(helper); |
| 985 } | |
| 986 | |
| 987 | |
|
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988 if (cast(ICompletionProposalExtension2)p && fViewer !is null) { |
| 134 | 989 ICompletionProposalExtension2 e= cast(ICompletionProposalExtension2) p; |
| 129 | 990 e.apply(fViewer, trigger, stateMask, offset); |
| 138 | 991 } else if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 992 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p; |
| 129 | 993 e.apply(document, trigger, offset); |
| 994 } else { | |
| 995 p.apply(document); | |
| 996 } | |
| 997 | |
| 998 Point selection= p.getSelection(document); | |
| 999 if (selection !is null) { | |
| 1000 fContentAssistSubjectControlAdapter.setSelectedRange(selection.x, selection.y); | |
| 1001 fContentAssistSubjectControlAdapter.revealRange(selection.x, selection.y); | |
| 1002 } | |
| 1003 | |
| 1004 IContextInformation info= p.getContextInformation(); | |
| 1005 if (info !is null) { | |
| 1006 | |
| 1007 int contextInformationOffset; | |
| 138 | 1008 if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 1009 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p; |
| 129 | 1010 contextInformationOffset= e.getContextInformationPosition(); |
| 1011 } else { | |
| 1012 if (selection is null) | |
| 1013 selection= fContentAssistSubjectControlAdapter.getSelectedRange(); | |
| 1014 contextInformationOffset= selection.x + selection.y; | |
| 1015 } | |
| 1016 | |
| 1017 fContentAssistant.showContextInformation(info, contextInformationOffset); | |
| 1018 } else | |
| 1019 fContentAssistant.showContextInformation(null, -1); | |
| 1020 | |
| 1021 | |
| 1022 } finally { | |
| 1023 if (target !is null) | |
| 1024 target.endCompoundChange(); | |
| 1025 | |
| 138 | 1026 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 1027 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 1028 registry.unregister(helper); |
| 1029 } | |
| 1030 fInserting= false; | |
| 1031 } | |
| 1032 } | |
| 1033 | |
| 1034 /** | |
| 1035 * Returns whether this popup has the focus. | |
| 1036 * | |
| 1037 * @return <code>true</code> if the popup has the focus | |
| 1038 */ | |
| 1039 public bool hasFocus() { | |
| 1040 if (Helper.okToUse(fProposalShell)) { | |
| 1041 if ((fProposalShell.isFocusControl() || fProposalTable.isFocusControl())) | |
| 1042 return true; | |
| 1043 /* | |
| 1044 * We have to delegate this query to the additional info controller | |
| 1045 * as well, since the content assistant is the widget token owner | |
| 1046 * and its closer does not know that the additional info control can | |
| 1047 * now also take focus. | |
| 1048 */ | |
| 1049 if (fAdditionalInfoController !is null) { | |
| 1050 IInformationControl informationControl= fAdditionalInfoController.getCurrentInformationControl2(); | |
| 1051 if (informationControl !is null && informationControl.isFocusControl()) | |
| 1052 return true; | |
| 1053 InformationControlReplacer replacer= fAdditionalInfoController.getInternalAccessor().getInformationControlReplacer(); | |
| 1054 if (replacer !is null) { | |
| 1055 informationControl= replacer.getCurrentInformationControl2(); | |
| 1056 if (informationControl !is null && informationControl.isFocusControl()) | |
| 1057 return true; | |
| 1058 } | |
| 1059 } | |
| 1060 } | |
| 1061 | |
| 1062 return false; | |
| 1063 } | |
| 1064 | |
| 1065 /** | |
| 1066 * Hides this popup. | |
| 1067 */ | |
| 1068 public void hide() { | |
| 1069 | |
| 1070 unregister(); | |
| 1071 | |
| 138 | 1072 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 1073 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 1074 registry.unregister(fFocusHelper); |
| 1075 } | |
| 1076 | |
| 1077 if (Helper.okToUse(fProposalShell)) { | |
| 1078 | |
| 1079 fContentAssistant.removeContentAssistListener(this, ContentAssistant.PROPOSAL_SELECTOR); | |
| 1080 | |
| 1081 fPopupCloser.uninstall(); | |
| 1082 fProposalShell.setVisible(false); | |
| 1083 fProposalShell.dispose(); | |
| 1084 fProposalShell= null; | |
| 1085 } | |
|
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1086 |
| 129 | 1087 if (fMessageTextFont !is null) { |
| 1088 fMessageTextFont.dispose(); | |
| 1089 fMessageTextFont= null; | |
| 1090 } | |
|
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1091 |
| 129 | 1092 if (fMessageText !is null) { |
| 1093 fMessageText= null; | |
| 1094 } | |
|
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1095 |
| 129 | 1096 fEmptyMessage= null; |
|
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1097 |
| 129 | 1098 fLastCompletionOffset= -1; |
|
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1099 |
| 129 | 1100 fContentAssistant.fireSessionEndEvent(); |
| 1101 } | |
| 1102 | |
| 1103 /** | |
| 1104 * Unregister this completion proposal popup. | |
| 1105 * | |
| 1106 * @since 3.0 | |
| 1107 */ | |
| 1108 private void unregister() { | |
| 1109 if (fDocumentListener !is null) { | |
| 1110 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1111 if (document !is null) | |
| 1112 document.removeDocumentListener(fDocumentListener); | |
| 1113 fDocumentListener= null; | |
| 1114 } | |
| 1115 fDocumentEvents.clear(); | |
| 1116 | |
| 1117 if (fKeyListener !is null && fContentAssistSubjectControlAdapter.getControl() !is null && !fContentAssistSubjectControlAdapter.getControl().isDisposed()) { | |
| 1118 fContentAssistSubjectControlAdapter.removeKeyListener(fKeyListener); | |
| 1119 fKeyListener= null; | |
| 1120 } | |
| 1121 | |
| 1122 if (fLastProposal !is null) { | |
|
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1123 if (cast(ICompletionProposalExtension2)fLastProposal && fViewer !is null) { |
| 134 | 1124 ICompletionProposalExtension2 extension= cast(ICompletionProposalExtension2) fLastProposal; |
| 129 | 1125 extension.unselected(fViewer); |
| 1126 } | |
| 1127 fLastProposal= null; | |
| 1128 } | |
| 1129 | |
| 1130 fFilteredProposals= null; | |
| 1131 fComputedProposals= null; | |
| 1132 | |
| 162 | 1133 fContentAssistant.possibleCompletionsClosed_package(); |
| 129 | 1134 } |
| 1135 | |
| 1136 /** | |
| 1137 *Returns whether this popup is active. It is active if the proposal selector is visible. | |
| 1138 * | |
| 1139 * @return <code>true</code> if this popup is active | |
| 1140 */ | |
| 1141 public bool isActive() { | |
| 1142 return fProposalShell !is null && !fProposalShell.isDisposed(); | |
| 1143 } | |
| 1144 | |
| 1145 /** | |
| 1146 * Initializes the proposal selector with these given proposals. | |
| 1147 * @param proposals the proposals | |
| 1148 * @param isFilteredSubset if <code>true</code>, the proposal table is | |
| 1149 * not cleared, but the proposals that are not in the passed array | |
| 1150 * are removed from the displayed set | |
| 1151 */ | |
| 1152 private void setProposals(ICompletionProposal[] proposals, bool isFilteredSubset) { | |
| 1153 ICompletionProposal[] oldProposals= fFilteredProposals; | |
| 1154 ICompletionProposal oldProposal= getSelectedProposal(); // may trigger filtering and a reentrant call to setProposals() | |
| 1155 if (oldProposals !is fFilteredProposals) // reentrant call was first - abort | |
| 1156 return; | |
| 1157 | |
| 1158 if (Helper.okToUse(fProposalTable)) { | |
|
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1159 if (cast(ICompletionProposalExtension2)oldProposal && fViewer !is null) |
| 134 | 1160 (cast(ICompletionProposalExtension2) oldProposal).unselected(fViewer); |
|
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1161 |
| 129 | 1162 if (proposals is null || proposals.length is 0) { |
| 1163 fEmptyProposal.fOffset= fFilterOffset; | |
| 1164 fEmptyProposal.fDisplayString= fEmptyMessage !is null ? fEmptyMessage : JFaceTextMessages.getString("CompletionProposalPopup.no_proposals"); //$NON-NLS-1$ | |
|
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1165 proposals= [ fEmptyProposal ]; |
| 129 | 1166 } |
| 1167 | |
| 1168 fFilteredProposals= proposals; | |
| 1169 final int newLen= proposals.length; | |
|
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1170 if (USE_VIRTUAL) { |
| 129 | 1171 fProposalTable.setItemCount(newLen); |
| 1172 fProposalTable.clearAll(); | |
| 1173 } else { | |
| 1174 fProposalTable.setRedraw(false); | |
| 1175 fProposalTable.setItemCount(newLen); | |
| 1176 TableItem[] items= fProposalTable.getItems(); | |
| 1177 for (int i= 0; i < items.length; i++) { | |
| 1178 TableItem item= items[i]; | |
| 1179 ICompletionProposal proposal= proposals[i]; | |
| 1180 item.setText(proposal.getDisplayString()); | |
| 1181 item.setImage(proposal.getImage()); | |
| 162 | 1182 item.setData(cast(Object)proposal); |
| 129 | 1183 } |
| 1184 fProposalTable.setRedraw(true); | |
| 1185 } | |
| 1186 | |
| 1187 Point currentLocation= fProposalShell.getLocation(); | |
| 1188 Point newLocation= getLocation(); | |
| 1189 if ((newLocation.x < currentLocation.x && newLocation.y is currentLocation.y) || newLocation.y < currentLocation.y) | |
| 1190 fProposalShell.setLocation(newLocation); | |
| 1191 | |
| 1192 selectProposal(0, false); | |
| 1193 } | |
| 1194 } | |
| 1195 | |
| 1196 /** | |
| 1197 * Returns the graphical location at which this popup should be made visible. | |
| 1198 * | |
| 1199 * @return the location of this popup | |
| 1200 */ | |
| 1201 private Point getLocation() { | |
| 1202 int caret= fContentAssistSubjectControlAdapter.getCaretOffset(); | |
| 162 | 1203 Rectangle location= fContentAssistant.getLayoutManager().computeBoundsBelowAbove_package(fProposalShell, fSize is null ? fProposalShell.getSize() : fSize, caret, this); |
| 129 | 1204 return Geometry.getLocation(location); |
| 1205 } | |
| 1206 | |
| 1207 /** | |
| 1208 * Returns the size of this completion proposal popup. | |
| 1209 * | |
| 1210 * @return a Point containing the size | |
| 1211 * @since 3.0 | |
| 1212 */ | |
| 1213 Point getSize() { | |
| 1214 return fSize; | |
| 1215 } | |
| 1216 | |
| 1217 /** | |
| 1218 * Displays this popup and install the additional info controller, so that additional info | |
| 1219 * is displayed when a proposal is selected and additional info is available. | |
| 1220 */ | |
| 1221 private void displayProposals() { | |
| 1222 | |
| 1223 if (!Helper.okToUse(fProposalShell) || !Helper.okToUse(fProposalTable)) | |
| 1224 return; | |
| 1225 | |
| 1226 if (fContentAssistant.addContentAssistListener(this, ContentAssistant.PROPOSAL_SELECTOR)) { | |
| 1227 | |
| 1228 ensureDocumentListenerInstalled(); | |
|
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1229 |
| 129 | 1230 if (fFocusHelper is null) { |
| 135 | 1231 fFocusHelper= new class() IEditingSupport { |
| 129 | 1232 |
| 1233 public bool isOriginator(DocumentEvent event, IRegion focus) { | |
| 1234 return false; // this helper just covers the focus change to the proposal shell, no remote editions | |
| 1235 } | |
| 1236 | |
| 1237 public bool ownsFocusShell() { | |
| 1238 return true; | |
| 1239 } | |
| 1240 | |
| 1241 }; | |
| 1242 } | |
| 138 | 1243 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 1244 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 1245 registry.register(fFocusHelper); |
| 1246 } | |
| 1247 | |
| 1248 | |
| 1249 /* https://bugs.eclipse.org/bugs/show_bug.cgi?id=52646 | |
| 1250 * on GTK, setVisible and such may run the event loop | |
| 1251 * (see also https://bugs.eclipse.org/bugs/show_bug.cgi?id=47511) | |
| 1252 * Since the user may have already canceled the popup or selected | |
| 1253 * an entry (ESC or RETURN), we have to double check whether | |
| 1254 * the table is still okToUse. See comments below | |
| 1255 */ | |
| 1256 fProposalShell.setVisible(true); // may run event loop on GTK | |
| 1257 // transfer focus since no verify key listener can be attached | |
| 1258 if (!fContentAssistSubjectControlAdapter.supportsVerifyKeyListener() && Helper.okToUse(fProposalShell)) | |
| 1259 fProposalShell.setFocus(); // may run event loop on GTK ?? | |
| 1260 | |
| 1261 if (fAdditionalInfoController !is null && Helper.okToUse(fProposalTable)) { | |
| 1262 fAdditionalInfoController.install(fProposalTable); | |
| 1263 fAdditionalInfoController.handleTableSelectionChanged(); | |
| 1264 } | |
| 1265 } else | |
| 1266 hide(); | |
| 1267 } | |
| 1268 | |
| 1269 /** | |
| 1270 * Installs the document listener if not already done. | |
| 1271 * | |
| 1272 * @since 3.2 | |
| 1273 */ | |
| 1274 private void ensureDocumentListenerInstalled() { | |
| 1275 if (fDocumentListener is null) { | |
| 135 | 1276 fDocumentListener= new class() IDocumentListener { |
| 129 | 1277 public void documentAboutToBeChanged(DocumentEvent event) { |
| 1278 if (!fInserting) | |
| 1279 fDocumentEvents.add(event); | |
| 1280 } | |
| 1281 | |
| 1282 public void documentChanged(DocumentEvent event) { | |
| 1283 if (!fInserting) | |
| 1284 filterProposals(); | |
| 1285 } | |
| 1286 }; | |
| 1287 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1288 if (document !is null) | |
| 1289 document.addDocumentListener(fDocumentListener); | |
| 1290 } | |
| 1291 } | |
| 1292 | |
| 1293 /* | |
| 1294 * @see IContentAssistListener#verifyKey(VerifyEvent) | |
| 1295 */ | |
| 1296 public bool verifyKey(VerifyEvent e) { | |
| 1297 if (!Helper.okToUse(fProposalShell)) | |
| 1298 return true; | |
| 1299 | |
| 1300 char key= e.character; | |
| 1301 if (key is 0) { | |
| 1302 int newSelection= fProposalTable.getSelectionIndex(); | |
| 1303 int visibleRows= (fProposalTable.getSize().y / fProposalTable.getItemHeight()) - 1; | |
| 1304 int itemCount= fProposalTable.getItemCount(); | |
| 1305 bool smartToggle= false; | |
| 1306 switch (e.keyCode) { | |
| 1307 | |
| 1308 case DWT.ARROW_LEFT : | |
| 1309 case DWT.ARROW_RIGHT : | |
| 1310 filterProposals(); | |
| 1311 return true; | |
| 1312 | |
| 1313 case DWT.ARROW_UP : | |
| 1314 newSelection -= 1; | |
| 1315 if (newSelection < 0) | |
| 1316 newSelection= itemCount - 1; | |
| 1317 break; | |
| 1318 | |
| 1319 case DWT.ARROW_DOWN : | |
| 1320 newSelection += 1; | |
| 1321 if (newSelection > itemCount - 1) | |
| 1322 newSelection= 0; | |
| 1323 break; | |
| 1324 | |
| 1325 case DWT.PAGE_DOWN : | |
| 1326 newSelection += visibleRows; | |
| 1327 if (newSelection >= itemCount) | |
| 1328 newSelection= itemCount - 1; | |
| 1329 break; | |
| 1330 | |
| 1331 case DWT.PAGE_UP : | |
| 1332 newSelection -= visibleRows; | |
| 1333 if (newSelection < 0) | |
| 1334 newSelection= 0; | |
| 1335 break; | |
| 1336 | |
| 1337 case DWT.HOME : | |
| 1338 newSelection= 0; | |
| 1339 break; | |
| 1340 | |
| 1341 case DWT.END : | |
| 1342 newSelection= itemCount - 1; | |
| 1343 break; | |
| 1344 | |
| 1345 default : | |
| 1346 if (e.keyCode !is DWT.CAPS_LOCK && e.keyCode !is DWT.MOD1 && e.keyCode !is DWT.MOD2 && e.keyCode !is DWT.MOD3 && e.keyCode !is DWT.MOD4) | |
| 1347 hide(); | |
| 1348 return true; | |
| 1349 } | |
| 1350 | |
| 1351 selectProposal(newSelection, smartToggle); | |
| 1352 | |
| 1353 e.doit= false; | |
| 1354 return false; | |
| 1355 | |
| 1356 } | |
| 1357 | |
| 1358 // key !is 0 | |
| 1359 switch (key) { | |
| 1360 case 0x1B: // Esc | |
| 1361 e.doit= false; | |
| 1362 hide(); | |
| 1363 break; | |
| 1364 | |
| 1365 case '\n': // Ctrl-Enter on w2k | |
| 1366 case '\r': // Enter | |
| 1367 e.doit= false; | |
| 1368 insertSelectedProposalWithMask(e.stateMask); | |
| 1369 break; | |
| 1370 | |
| 1371 case '\t': | |
| 1372 e.doit= false; | |
| 1373 fProposalShell.setFocus(); | |
| 1374 return false; | |
| 1375 | |
| 1376 default: | |
| 1377 ICompletionProposal p= getSelectedProposal(); | |
| 138 | 1378 if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 1379 ICompletionProposalExtension t= cast(ICompletionProposalExtension) p; |
| 129 | 1380 char[] triggers= t.getTriggerCharacters(); |
| 1381 if (contains(triggers, key)) { | |
| 1382 e.doit= false; | |
| 1383 hide(); | |
| 1384 insertProposal(p, key, e.stateMask, fContentAssistSubjectControlAdapter.getSelectedRange().x); | |
| 1385 } | |
| 1386 } | |
| 1387 } | |
| 1388 | |
| 1389 return true; | |
| 1390 } | |
| 1391 | |
| 1392 /** | |
| 1393 * Selects the entry with the given index in the proposal selector and feeds | |
| 1394 * the selection to the additional info controller. | |
| 1395 * | |
| 1396 * @param index the index in the list | |
| 1397 * @param smartToggle <code>true</code> if the smart toggle key has been pressed | |
| 1398 * @since 2.1 | |
| 1399 */ | |
| 1400 private void selectProposal(int index, bool smartToggle) { | |
| 1401 | |
| 1402 ICompletionProposal oldProposal= getSelectedProposal(); | |
|
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1403 if (cast(ICompletionProposalExtension2)oldProposal && fViewer !is null) |
| 134 | 1404 (cast(ICompletionProposalExtension2) oldProposal).unselected(fViewer); |
| 129 | 1405 |
| 1406 if (fFilteredProposals is null) { | |
| 1407 fireSelectionEvent(null, smartToggle); | |
| 1408 return; | |
| 1409 } | |
|
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1410 |
| 129 | 1411 ICompletionProposal proposal= fFilteredProposals[index]; |
|
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1412 if (cast(ICompletionProposalExtension2)proposal && fViewer !is null) |
| 134 | 1413 (cast(ICompletionProposalExtension2) proposal).selected(fViewer, smartToggle); |
|
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1414 |
| 129 | 1415 fireSelectionEvent(proposal, smartToggle); |
| 1416 | |
| 1417 fLastProposal= proposal; | |
| 1418 | |
| 1419 fProposalTable.setSelection(index); | |
| 1420 fProposalTable.showSelection(); | |
| 1421 if (fAdditionalInfoController !is null) | |
| 1422 fAdditionalInfoController.handleTableSelectionChanged(); | |
| 1423 } | |
| 1424 | |
| 1425 /** | |
| 1426 * Fires a selection event, see {@link ICompletionListener}. | |
|
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1427 * |
| 129 | 1428 * @param proposal the selected proposal, possibly <code>null</code> |
| 1429 * @param smartToggle true if the smart toggle is on | |
| 1430 * @since 3.2 | |
| 1431 */ | |
| 1432 private void fireSelectionEvent(ICompletionProposal proposal, bool smartToggle) { | |
| 1433 fContentAssistant.fireSelectionEvent(proposal, smartToggle); | |
| 1434 } | |
| 1435 | |
| 1436 /** | |
| 1437 * Returns whether the given character is contained in the given array of | |
| 1438 * characters. | |
| 1439 * | |
| 1440 * @param characters the list of characters | |
| 1441 * @param c the character to look for in the list | |
| 1442 * @return <code>true</code> if character belongs to the list | |
| 1443 * @since 2.0 | |
| 1444 */ | |
| 1445 private bool contains(char[] characters, char c) { | |
| 1446 | |
| 1447 if (characters is null) | |
| 1448 return false; | |
| 1449 | |
| 1450 for (int i= 0; i < characters.length; i++) { | |
| 1451 if (c is characters[i]) | |
| 1452 return true; | |
| 1453 } | |
| 1454 | |
| 1455 return false; | |
| 1456 } | |
| 1457 | |
| 1458 /* | |
| 1459 * @see IEventConsumer#processEvent(VerifyEvent) | |
| 1460 */ | |
| 1461 public void processEvent(VerifyEvent e) { | |
| 1462 } | |
| 1463 | |
| 1464 /** | |
| 1465 * Filters the displayed proposal based on the given cursor position and the | |
| 1466 * offset of the original invocation of the content assistant. | |
| 1467 */ | |
| 1468 private void filterProposals() { | |
| 1469 if (!fIsFilterPending) { | |
| 1470 fIsFilterPending= true; | |
| 1471 Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 1472 control.getDisplay().asyncExec(fFilterRunnable); | |
| 1473 } | |
| 1474 } | |
| 1475 | |
| 1476 /** | |
| 1477 * Computes the subset of already computed proposals that are still valid for | |
| 1478 * the given offset. | |
| 1479 * | |
| 1480 * @param offset the offset | |
| 1481 * @param event the merged document event | |
| 1482 * @return the set of filtered proposals | |
| 1483 * @since 3.0 | |
| 1484 */ | |
| 1485 private ICompletionProposal[] computeFilteredProposals(int offset, DocumentEvent event) { | |
| 1486 | |
| 1487 if (offset is fInvocationOffset && event is null) { | |
| 1488 fIsFilteredSubset= false; | |
| 1489 return fComputedProposals; | |
| 1490 } | |
| 1491 | |
| 1492 if (offset < fInvocationOffset) { | |
| 1493 fIsFilteredSubset= false; | |
| 1494 fInvocationOffset= offset; | |
| 1495 fContentAssistant.fireSessionRestartEvent(); | |
| 1496 fComputedProposals= computeProposals(fInvocationOffset); | |
| 1497 return fComputedProposals; | |
| 1498 } | |
| 1499 | |
| 1500 ICompletionProposal[] proposals; | |
| 1501 if (offset < fFilterOffset) { | |
| 1502 proposals= fComputedProposals; | |
| 1503 fIsFilteredSubset= false; | |
| 1504 } else { | |
| 1505 proposals= fFilteredProposals; | |
| 1506 fIsFilteredSubset= true; | |
| 1507 } | |
| 1508 | |
| 1509 if (proposals is null) { | |
| 1510 fIsFilteredSubset= false; | |
| 1511 return null; | |
| 1512 } | |
| 1513 | |
| 1514 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1515 int length= proposals.length; | |
| 1516 List filtered= new ArrayList(length); | |
| 1517 for (int i= 0; i < length; i++) { | |
| 1518 | |
|
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1519 if (cast(ICompletionProposalExtension2)proposals[i] ) { |
| 129 | 1520 |
| 134 | 1521 ICompletionProposalExtension2 p= cast(ICompletionProposalExtension2) proposals[i]; |
| 129 | 1522 if (p.validate(document, offset, event)) |
| 162 | 1523 filtered.add(cast(Object)p); |
| 129 | 1524 |
|
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1525 } else if (cast(ICompletionProposalExtension)proposals[i] ) { |
| 129 | 1526 |
| 134 | 1527 ICompletionProposalExtension p= cast(ICompletionProposalExtension) proposals[i]; |
| 129 | 1528 if (p.isValidFor(document, offset)) |
| 162 | 1529 filtered.add(cast(Object)p); |
| 129 | 1530 |
| 1531 } else { | |
| 1532 // restore original behavior | |
| 1533 fIsFilteredSubset= false; | |
| 1534 fInvocationOffset= offset; | |
| 1535 fContentAssistant.fireSessionRestartEvent(); | |
| 1536 fComputedProposals= computeProposals(fInvocationOffset); | |
| 1537 return fComputedProposals; | |
| 1538 } | |
| 1539 } | |
| 1540 | |
| 158 | 1541 return arraycast!(ICompletionProposal)( filtered.toArray()); |
| 129 | 1542 } |
| 1543 | |
| 1544 /** | |
| 1545 * Requests the proposal shell to take focus. | |
| 1546 * | |
| 1547 * @since 3.0 | |
| 1548 */ | |
| 1549 public void setFocus() { | |
| 1550 if (Helper.okToUse(fProposalShell)) { | |
| 1551 fProposalShell.setFocus(); | |
| 1552 } | |
| 1553 } | |
|
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1554 |
| 129 | 1555 /** |
| 1556 * Returns <code>true</code> if <code>proposal</code> should be auto-inserted, | |
| 1557 * <code>false</code> otherwise. | |
|
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1558 * |
| 129 | 1559 * @param proposal the single proposal that might be automatically inserted |
| 1560 * @return <code>true</code> if <code>proposal</code> can be inserted automatically, | |
| 1561 * <code>false</code> otherwise | |
| 1562 * @since 3.1 | |
| 1563 */ | |
| 1564 private bool canAutoInsert(ICompletionProposal proposal) { | |
| 1565 if (fContentAssistant.isAutoInserting()) { | |
| 138 | 1566 if ( cast(ICompletionProposalExtension4)proposal ) { |
| 134 | 1567 ICompletionProposalExtension4 ext= cast(ICompletionProposalExtension4) proposal; |
| 129 | 1568 return ext.isAutoInsertable(); |
| 1569 } | |
| 1570 return true; // default behavior before ICompletionProposalExtension4 was introduced | |
| 1571 } | |
| 1572 return false; | |
| 1573 } | |
| 1574 | |
| 1575 /** | |
| 1576 * Completes the common prefix of all proposals directly in the code. If no | |
| 1577 * common prefix can be found, the proposal popup is shown. | |
| 1578 * | |
| 1579 * @return an error message if completion failed. | |
| 1580 * @since 3.0 | |
| 1581 */ | |
| 1582 public String incrementalComplete() { | |
| 1583 if (Helper.okToUse(fProposalShell) && fFilteredProposals !is null) { | |
| 1584 if (fLastCompletionOffset is fFilterOffset) { | |
| 1585 handleRepeatedInvocation(); | |
| 1586 } else { | |
| 1587 fLastCompletionOffset= fFilterOffset; | |
| 1588 completeCommonPrefix(); | |
| 1589 } | |
| 1590 } else { | |
| 1591 final Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 1592 | |
| 1593 if (fKeyListener is null) | |
| 1594 fKeyListener= new ProposalSelectionListener(); | |
| 1595 | |
| 1596 if (!Helper.okToUse(fProposalShell) && !control.isDisposed()) | |
| 1597 fContentAssistSubjectControlAdapter.addKeyListener(fKeyListener); | |
| 1598 | |
| 135 | 1599 BusyIndicator.showWhile(control.getDisplay(), new class() Runnable { |
| 129 | 1600 public void run() { |
| 1601 | |
| 1602 fInvocationOffset= fContentAssistSubjectControlAdapter.getSelectedRange().x; | |
| 1603 fFilterOffset= fInvocationOffset; | |
| 1604 fLastCompletionOffset= fFilterOffset; | |
| 1605 fFilteredProposals= computeProposals(fInvocationOffset); | |
| 1606 | |
| 1607 int count= (fFilteredProposals is null ? 0 : fFilteredProposals.length); | |
| 1608 if (count is 0 && hideWhenNoProposals(false)) | |
| 1609 return; | |
|
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1610 |
| 129 | 1611 if (count is 1 && canAutoInsert(fFilteredProposals[0])) { |
| 134 | 1612 insertProposal(fFilteredProposals[0], cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 1613 hide(); |
| 1614 } else { | |
| 1615 ensureDocumentListenerInstalled(); | |
| 1616 if (count > 0 && completeCommonPrefix()) | |
| 1617 hide(); | |
| 1618 else { | |
| 1619 fComputedProposals= fFilteredProposals; | |
| 1620 createProposalSelector(); | |
| 1621 setProposals(fComputedProposals, false); | |
| 1622 displayProposals(); | |
| 1623 } | |
| 1624 } | |
| 1625 } | |
| 1626 }); | |
| 1627 } | |
| 1628 return getErrorMessage(); | |
| 1629 } | |
| 1630 | |
| 1631 /** | |
| 1632 * Acts upon <code>fFilteredProposals</code>: if there is just one valid | |
| 1633 * proposal, it is inserted, otherwise, the common prefix of all proposals | |
| 1634 * is inserted into the document. If there is no common prefix, nothing | |
| 1635 * happens and <code>false</code> is returned. | |
|
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1636 * |
| 129 | 1637 * @return <code>true</code> if a single proposal was inserted and the |
| 1638 * selector can be closed, <code>false</code> otherwise | |
| 1639 * @since 3.0 | |
| 1640 */ | |
| 1641 private bool completeCommonPrefix() { | |
| 1642 | |
| 1643 // 0: insert single proposals | |
| 1644 if (fFilteredProposals.length is 1) { | |
| 1645 if (canAutoInsert(fFilteredProposals[0])) { | |
| 134 | 1646 insertProposal(fFilteredProposals[0], cast(wchar) 0, 0, fFilterOffset); |
| 129 | 1647 hide(); |
| 1648 return true; | |
| 1649 } | |
| 1650 return false; | |
| 1651 } | |
| 1652 | |
| 1653 // 1: extract pre- and postfix from all remaining proposals | |
| 1654 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1655 | |
| 1656 // contains the common postfix in the case that there are any proposals matching our LHS | |
| 162 | 1657 StringBuffer rightCasePostfix; |
| 129 | 1658 List rightCase= new ArrayList(); |
| 1659 | |
| 1660 bool isWrongCaseMatch= false; | |
|
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1661 |
| 129 | 1662 // the prefix of all case insensitive matches. This differs from the document |
| 1663 // contents and will be replaced. | |
| 1664 CharSequence wrongCasePrefix= null; | |
| 1665 int wrongCasePrefixStart= 0; | |
| 1666 // contains the common postfix of all case-insensitive matches | |
| 162 | 1667 StringBuffer wrongCasePostfix; |
| 129 | 1668 List wrongCase= new ArrayList(); |
| 1669 | |
| 1670 for (int i= 0; i < fFilteredProposals.length; i++) { | |
| 1671 ICompletionProposal proposal= fFilteredProposals[i]; | |
|
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1672 |
| 138 | 1673 if (!( cast(ICompletionProposalExtension3)proposal )) |
| 129 | 1674 return false; |
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1675 |
| 134 | 1676 int start= (cast(ICompletionProposalExtension3)proposal).getPrefixCompletionStart(fContentAssistSubjectControlAdapter.getDocument(), fFilterOffset); |
| 1677 CharSequence insertion= (cast(ICompletionProposalExtension3)proposal).getPrefixCompletionText(fContentAssistSubjectControlAdapter.getDocument(), fFilterOffset); | |
| 129 | 1678 if (insertion is null) |
| 162 | 1679 insertion= new StringCharSequence(proposal.getDisplayString()); |
| 129 | 1680 try { |
| 1681 int prefixLength= fFilterOffset - start; | |
| 1682 int relativeCompletionOffset= Math.min(insertion.length(), prefixLength); | |
| 1683 String prefix= document.get(start, prefixLength); | |
| 1684 if (!isWrongCaseMatch && insertion.toString().startsWith(prefix)) { | |
| 1685 isWrongCaseMatch= false; | |
| 162 | 1686 rightCase.add(cast(Object)proposal); |
| 129 | 1687 CharSequence newPostfix= insertion.subSequence(relativeCompletionOffset, insertion.length()); |
| 1688 if (rightCasePostfix is null) | |
| 1689 rightCasePostfix= new StringBuffer(newPostfix.toString()); | |
| 1690 else | |
| 1691 truncatePostfix(rightCasePostfix, newPostfix); | |
| 1692 } else if (i is 0 || isWrongCaseMatch) { | |
| 1693 CharSequence newPrefix= insertion.subSequence(0, relativeCompletionOffset); | |
| 1694 if (isPrefixCompatible(wrongCasePrefix, wrongCasePrefixStart, newPrefix, start, document)) { | |
| 1695 isWrongCaseMatch= true; | |
| 1696 wrongCasePrefix= newPrefix; | |
| 1697 wrongCasePrefixStart= start; | |
| 1698 CharSequence newPostfix= insertion.subSequence(relativeCompletionOffset, insertion.length()); | |
| 1699 if (wrongCasePostfix is null) | |
| 1700 wrongCasePostfix= new StringBuffer(newPostfix.toString()); | |
| 1701 else | |
| 1702 truncatePostfix(wrongCasePostfix, newPostfix); | |
| 162 | 1703 wrongCase.add(cast(Object)proposal); |
| 129 | 1704 } else { |
| 1705 return false; | |
| 1706 } | |
| 1707 } else | |
| 1708 return false; | |
| 1709 } catch (BadLocationException e2) { | |
| 1710 // bail out silently | |
| 1711 return false; | |
| 1712 } | |
| 1713 | |
| 1714 if (rightCasePostfix !is null && rightCasePostfix.length() is 0 && rightCase.size() > 1) | |
| 1715 return false; | |
| 1716 } | |
| 1717 | |
| 1718 // 2: replace single proposals | |
| 1719 | |
| 1720 if (rightCase.size() is 1) { | |
| 134 | 1721 ICompletionProposal proposal= cast(ICompletionProposal) rightCase.get(0); |
| 129 | 1722 if (canAutoInsert(proposal) && rightCasePostfix.length() > 0) { |
| 134 | 1723 insertProposal(proposal, cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 1724 hide(); |
| 1725 return true; | |
| 1726 } | |
| 1727 return false; | |
| 1728 } else if (isWrongCaseMatch && wrongCase.size() is 1) { | |
| 134 | 1729 ICompletionProposal proposal= cast(ICompletionProposal) wrongCase.get(0); |
| 129 | 1730 if (canAutoInsert(proposal)) { |
| 134 | 1731 insertProposal(proposal, cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 1732 hide(); |
| 1733 return true; | |
| 1734 } | |
| 1735 return false; | |
| 1736 } | |
| 1737 | |
| 1738 // 3: replace post- / prefixes | |
| 1739 | |
| 1740 CharSequence prefix; | |
| 1741 if (isWrongCaseMatch) | |
| 1742 prefix= wrongCasePrefix; | |
| 1743 else | |
| 162 | 1744 prefix= new StringCharSequence(""); //$NON-NLS-1$ |
| 129 | 1745 |
| 1746 CharSequence postfix; | |
| 1747 if (isWrongCaseMatch) | |
| 162 | 1748 postfix= new StringCharSequence(wrongCasePostfix.toString); |
| 129 | 1749 else |
| 162 | 1750 postfix= new StringCharSequence(rightCasePostfix.toString); |
| 129 | 1751 |
| 1752 if (prefix is null || postfix is null) | |
| 1753 return false; | |
| 1754 | |
| 1755 try { | |
| 1756 // 4: check if parts of the postfix are already in the document | |
| 1757 int to= Math.min(document.getLength(), fFilterOffset + postfix.length()); | |
| 1758 StringBuffer inDocument= new StringBuffer(document.get(fFilterOffset, to - fFilterOffset)); | |
| 1759 truncatePostfix(inDocument, postfix); | |
| 1760 | |
| 1761 // 5: replace and reveal | |
| 162 | 1762 document.replace(fFilterOffset - prefix.length(), prefix.length() + inDocument.length(), prefix.toString() ~ postfix.toString()); |
| 129 | 1763 |
| 1764 fContentAssistSubjectControlAdapter.setSelectedRange(fFilterOffset + postfix.length(), 0); | |
| 1765 fContentAssistSubjectControlAdapter.revealRange(fFilterOffset + postfix.length(), 0); | |
| 1766 fFilterOffset+= postfix.length(); | |
| 1767 fLastCompletionOffset= fFilterOffset; | |
| 1768 | |
| 1769 return false; | |
| 1770 } catch (BadLocationException e) { | |
| 1771 // ignore and return false | |
| 1772 return false; | |
| 1773 } | |
| 1774 } | |
| 1775 | |
| 1776 /* | |
| 1777 * @since 3.1 | |
| 1778 */ | |
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1779 private bool isPrefixCompatible(CharSequence oneSequence, int oneOffset, CharSequence twoSequence, int twoOffset, IDocument document) { |
| 129 | 1780 if (oneSequence is null || twoSequence is null) |
| 1781 return true; | |
| 1782 | |
| 1783 int min= Math.min(oneOffset, twoOffset); | |
| 1784 int oneEnd= oneOffset + oneSequence.length(); | |
| 1785 int twoEnd= twoOffset + twoSequence.length(); | |
| 1786 | |
| 162 | 1787 String one= document.get(oneOffset, min - oneOffset) ~ oneSequence.toString ~ document.get(oneEnd, Math.min(fFilterOffset, fFilterOffset - oneEnd)); |
| 1788 String two= document.get(twoOffset, min - twoOffset) ~ twoSequence.toString ~ document.get(twoEnd, Math.min(fFilterOffset, fFilterOffset - twoEnd)); | |
| 129 | 1789 |
| 1790 return one.equals(two); | |
| 1791 } | |
| 1792 | |
| 1793 /** | |
| 1794 * Truncates <code>buffer</code> to the common prefix of <code>buffer</code> | |
| 1795 * and <code>sequence</code>. | |
| 1796 * | |
| 1797 * @param buffer the common postfix to truncate | |
| 1798 * @param sequence the characters to truncate with | |
| 1799 */ | |
| 1800 private void truncatePostfix(StringBuffer buffer, CharSequence sequence) { | |
| 1801 // find common prefix | |
| 1802 int min= Math.min(buffer.length(), sequence.length()); | |
| 1803 for (int c= 0; c < min; c++) { | |
| 162 | 1804 if (sequence.charAt(c) !is buffer.slice()[c]) { |
| 1805 buffer.truncate(c); | |
| 129 | 1806 return; |
| 1807 } | |
| 1808 } | |
| 1809 | |
| 1810 // all equal up to minimum | |
| 162 | 1811 buffer.truncate(min); |
| 129 | 1812 } |
|
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1813 |
| 129 | 1814 /** |
| 1815 * Sets the message for the repetition affordance text at the bottom of the proposal. Only has | |
| 1816 * an effect if {@link ContentAssistant#isRepeatedInvocationMode()} returns <code>true</code>. | |
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1817 * |
| 129 | 1818 * @param message the new caption |
| 1819 * @since 3.2 | |
| 1820 */ | |
| 1821 void setMessage(String message) { | |
| 1822 Assert.isNotNull(message); | |
| 1823 if (isActive() && fMessageText !is null) | |
| 162 | 1824 fMessageText.setText(message ~ " "); //$NON-NLS-1$ |
| 129 | 1825 } |
| 1826 | |
| 1827 /** | |
| 1828 * Sets the text to be displayed if no proposals are available. Only has an effect if | |
| 1829 * {@link ContentAssistant#isShowEmptyList()} returns <code>true</code>. | |
|
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1830 * |
| 129 | 1831 * @param message the empty message |
| 1832 * @since 3.2 | |
| 1833 */ | |
| 1834 void setEmptyMessage(String message) { | |
| 1835 Assert.isNotNull(message); | |
| 1836 fEmptyMessage= message; | |
| 1837 } | |
| 1838 | |
| 1839 /** | |
| 1840 * Enables or disables showing of the caption line. See also {@link #setMessage(String)}. | |
|
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1841 * |
| 129 | 1842 * @param show |
| 1843 * @since 3.2 | |
| 1844 */ | |
| 1845 public void setStatusLineVisible(bool show) { | |
| 1846 if (!isActive() || show is (fMessageText !is null)) | |
| 1847 return; // nothing to do | |
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1848 |
| 129 | 1849 if (show) { |
| 1850 createMessageText(); | |
| 1851 } else { | |
| 1852 fMessageText.dispose(); | |
| 1853 fMessageText= null; | |
| 1854 } | |
| 1855 fProposalShell.layout(); | |
| 1856 } | |
| 1857 | |
| 1858 /** | |
| 1859 * Informs the popup that it is being placed above the caret line instead of below. | |
|
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1860 * |
| 129 | 1861 * @param above <code>true</code> if the location of the popup is above the caret line, <code>false</code> if it is below |
| 1862 * @since 3.3 | |
| 1863 */ | |
| 1864 void switchedPositionToAbove(bool above) { | |
| 1865 if (fAdditionalInfoController !is null) { | |
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1866 fAdditionalInfoController.setFallbackAnchors([ |
| 129 | 1867 AbstractInformationControlManager.ANCHOR_RIGHT, |
| 1868 AbstractInformationControlManager.ANCHOR_LEFT, | |
| 1869 above ? AbstractInformationControlManager.ANCHOR_TOP : AbstractInformationControlManager.ANCHOR_BOTTOM | |
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1870 ]); |
| 129 | 1871 } |
| 1872 } | |
| 1873 | |
| 1874 /** | |
| 1875 * Returns a new proposal selection handler. | |
|
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1876 * |
| 129 | 1877 * @param operationCode the operation code |
| 1878 * @return the handler | |
| 1879 * @since 3.4 | |
| 1880 */ | |
| 1881 IHandler createProposalSelectionHandler(int operationCode) { | |
| 1882 return new ProposalSelectionHandler(operationCode); | |
| 1883 } | |
| 1884 | |
| 1885 } |