Mercurial > projects > dwt-addons
annotate dwtx/jface/text/contentassist/CompletionProposalPopup.d @ 158:25f1f92fa3df
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| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Tue, 26 Aug 2008 02:46:34 +0200 |
| parents | f70d9508c95c |
| children | 7926b636c282 |
| 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 */ | |
| 147 | 135 private static const bool USE_VIRTUAL= !"motif".equals(DWT.getPlatform()); //$NON-NLS-1$ |
| 129 | 136 |
| 137 | |
| 138 /** | |
| 139 * Completion proposal selection handler. | |
|
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140 * |
| 129 | 141 * @since 3.4 |
| 142 */ | |
| 143 final class ProposalSelectionHandler : AbstractHandler { | |
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144 |
| 129 | 145 /** |
| 146 * Selection operation codes. | |
| 147 */ | |
| 148 static final int SELECT_NEXT= 1; | |
| 149 static final int SELECT_PREVIOUS= 2; | |
| 150 | |
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151 |
| 129 | 152 private int fOperationCode; |
| 153 | |
| 154 /** | |
| 155 * Creates a new selection handler. | |
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156 * |
| 129 | 157 * @param operationCode the operation code |
| 158 * @since 3.4 | |
| 159 */ | |
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160 public this(int operationCode) { |
| 129 | 161 Assert.isLegal(operationCode is SELECT_NEXT || operationCode is SELECT_PREVIOUS); |
| 162 fOperationCode= operationCode; | |
| 163 } | |
| 164 | |
| 165 /* | |
| 166 * @see dwtx.core.commands.AbstractHandler#execute(dwtx.core.commands.ExecutionEvent) | |
| 167 * @since 3.4 | |
| 168 */ | |
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169 public Object execute(ExecutionEvent event) { |
| 129 | 170 int itemCount= fProposalTable.getItemCount(); |
| 171 int selectionIndex= fProposalTable.getSelectionIndex(); | |
| 172 switch (fOperationCode) { | |
| 173 case SELECT_NEXT: | |
| 174 selectionIndex+= 1; | |
| 175 if (selectionIndex > itemCount - 1) | |
| 176 selectionIndex= 0; | |
| 177 break; | |
| 178 case SELECT_PREVIOUS: | |
| 179 selectionIndex-= 1; | |
| 180 if (selectionIndex < 0) | |
| 181 selectionIndex= itemCount - 1; | |
| 182 break; | |
| 183 } | |
| 184 selectProposal(selectionIndex, false); | |
| 185 return null; | |
| 186 } | |
| 187 | |
| 188 } | |
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189 |
| 129 | 190 |
| 191 /** | |
| 192 * The empty proposal displayed if there is nothing else to show. | |
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193 * |
| 129 | 194 * @since 3.2 |
| 195 */ | |
| 196 private static final class EmptyProposal : ICompletionProposal, ICompletionProposalExtension { | |
| 197 | |
| 198 String fDisplayString; | |
| 199 int fOffset; | |
| 200 /* | |
| 201 * @see ICompletionProposal#apply(IDocument) | |
| 202 */ | |
| 203 public void apply(IDocument document) { | |
| 204 } | |
| 205 | |
| 206 /* | |
| 207 * @see ICompletionProposal#getSelection(IDocument) | |
| 208 */ | |
| 209 public Point getSelection(IDocument document) { | |
| 210 return new Point(fOffset, 0); | |
| 211 } | |
| 212 | |
| 213 /* | |
| 214 * @see ICompletionProposal#getContextInformation() | |
| 215 */ | |
| 216 public IContextInformation getContextInformation() { | |
| 217 return null; | |
| 218 } | |
| 219 | |
| 220 /* | |
| 221 * @see ICompletionProposal#getImage() | |
| 222 */ | |
| 223 public Image getImage() { | |
| 224 return null; | |
| 225 } | |
| 226 | |
| 227 /* | |
| 228 * @see ICompletionProposal#getDisplayString() | |
| 229 */ | |
| 230 public String getDisplayString() { | |
| 231 return fDisplayString; | |
| 232 } | |
| 233 | |
| 234 /* | |
| 235 * @see ICompletionProposal#getAdditionalProposalInfo() | |
| 236 */ | |
| 237 public String getAdditionalProposalInfo() { | |
| 238 return null; | |
| 239 } | |
| 240 | |
| 241 /* | |
| 242 * @see dwtx.jface.text.contentassist.ICompletionProposalExtension#apply(dwtx.jface.text.IDocument, char, int) | |
| 243 */ | |
| 244 public void apply(IDocument document, char trigger, int offset) { | |
| 245 } | |
| 246 | |
| 247 /* | |
| 248 * @see dwtx.jface.text.contentassist.ICompletionProposalExtension#isValidFor(dwtx.jface.text.IDocument, int) | |
| 249 */ | |
| 250 public bool isValidFor(IDocument document, int offset) { | |
| 251 return false; | |
| 252 } | |
| 253 | |
| 254 /* | |
| 255 * @see dwtx.jface.text.contentassist.ICompletionProposalExtension#getTriggerCharacters() | |
| 256 */ | |
| 257 public char[] getTriggerCharacters() { | |
| 258 return null; | |
| 259 } | |
| 260 | |
| 261 /* | |
| 262 * @see dwtx.jface.text.contentassist.ICompletionProposalExtension#getContextInformationPosition() | |
| 263 */ | |
| 264 public int getContextInformationPosition() { | |
| 265 return -1; | |
| 266 } | |
| 267 } | |
| 268 | |
| 269 private final class ProposalSelectionListener : KeyListener { | |
| 270 public void keyPressed(KeyEvent e) { | |
| 271 if (!Helper.okToUse(fProposalShell)) | |
| 272 return; | |
| 273 | |
| 274 if (e.character is 0 && e.keyCode is DWT.CTRL) { | |
| 275 // http://dev.eclipse.org/bugs/show_bug.cgi?id=34754 | |
| 276 int index= fProposalTable.getSelectionIndex(); | |
| 277 if (index >= 0) | |
| 278 selectProposal(index, true); | |
| 279 } | |
| 280 } | |
| 281 | |
| 282 public void keyReleased(KeyEvent e) { | |
| 283 if (!Helper.okToUse(fProposalShell)) | |
| 284 return; | |
| 285 | |
| 286 if (e.character is 0 && e.keyCode is DWT.CTRL) { | |
| 287 // http://dev.eclipse.org/bugs/show_bug.cgi?id=34754 | |
| 288 int index= fProposalTable.getSelectionIndex(); | |
| 289 if (index >= 0) | |
| 290 selectProposal(index, false); | |
| 291 } | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 private final class CommandKeyListener : KeyAdapter { | |
| 296 private KeySequence fCommandSequence; | |
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297 |
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298 private this(KeySequence keySequence) { |
| 129 | 299 fCommandSequence= keySequence; |
| 300 } | |
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301 |
| 129 | 302 public void keyPressed(KeyEvent e) { |
| 303 if (!Helper.okToUse(fProposalShell)) | |
| 304 return; | |
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305 |
| 129 | 306 int accelerator= SWTKeySupport.convertEventToUnmodifiedAccelerator(e); |
| 307 KeySequence sequence= KeySequence.getInstance(SWTKeySupport.convertAcceleratorToKeyStroke(accelerator)); | |
| 308 if (sequence.equals(fCommandSequence)) | |
| 309 if (fContentAssistant.isPrefixCompletionEnabled()) | |
| 310 incrementalComplete(); | |
| 311 else | |
| 312 showProposals(false); | |
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313 |
| 129 | 314 } |
| 315 } | |
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316 |
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317 |
| 129 | 318 /** The associated text viewer. */ |
| 319 private ITextViewer fViewer; | |
| 320 /** The associated content assistant. */ | |
| 321 private ContentAssistant fContentAssistant; | |
| 322 /** The used additional info controller. */ | |
| 323 private AdditionalInfoController fAdditionalInfoController; | |
| 324 /** The closing strategy for this completion proposal popup. */ | |
| 325 private PopupCloser fPopupCloser= new PopupCloser(); | |
| 326 /** The popup shell. */ | |
| 327 private Shell fProposalShell; | |
| 328 /** The proposal table. */ | |
| 329 private Table fProposalTable; | |
| 330 /** Indicates whether a completion proposal is being inserted. */ | |
| 331 private bool fInserting= false; | |
| 332 /** The key listener to control navigation. */ | |
| 333 private ProposalSelectionListener fKeyListener; | |
| 334 /** List of document events used for filtering proposals. */ | |
| 335 private List fDocumentEvents= new ArrayList(); | |
| 336 /** Listener filling the document event queue. */ | |
| 337 private IDocumentListener fDocumentListener; | |
| 338 /** The filter list of proposals. */ | |
| 339 private ICompletionProposal[] fFilteredProposals; | |
| 340 /** The computed list of proposals. */ | |
| 341 private ICompletionProposal[] fComputedProposals; | |
| 342 /** The offset for which the proposals have been computed. */ | |
| 343 private int fInvocationOffset; | |
| 344 /** The offset for which the computed proposals have been filtered. */ | |
| 345 private int fFilterOffset; | |
| 346 /** | |
| 347 * The most recently selected proposal. | |
| 348 * @since 3.0 | |
| 349 */ | |
| 350 private ICompletionProposal fLastProposal; | |
| 351 /** | |
| 352 * The content assist subject control. | |
| 353 * This replaces <code>fViewer</code> | |
| 354 * | |
| 355 * @since 3.0 | |
| 356 */ | |
| 357 private IContentAssistSubjectControl fContentAssistSubjectControl; | |
| 358 /** | |
| 359 * The content assist subject control adapter. | |
| 360 * This replaces <code>fViewer</code> | |
| 361 * | |
| 362 * @since 3.0 | |
| 363 */ | |
| 364 private ContentAssistSubjectControlAdapter fContentAssistSubjectControlAdapter; | |
| 365 /** | |
| 366 * Remembers the size for this completion proposal popup. | |
| 367 * @since 3.0 | |
| 368 */ | |
| 369 private Point fSize; | |
| 370 /** | |
| 371 * Editor helper that communicates that the completion proposal popup may | |
| 372 * have focus while the 'logical focus' is still with the editor. | |
| 373 * @since 3.1 | |
| 374 */ | |
| 375 private IEditingSupport fFocusHelper; | |
| 376 /** | |
| 377 * Set to true by {@link #computeFilteredProposals(int, DocumentEvent)} if | |
| 378 * the returned proposals are a subset of {@link #fFilteredProposals}, | |
| 379 * <code>false</code> if not. | |
| 380 * @since 3.1 | |
| 381 */ | |
| 382 private bool fIsFilteredSubset; | |
| 383 /** | |
| 384 * The filter runnable. | |
|
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385 * |
| 129 | 386 * @since 3.1.1 |
| 387 */ | |
| 135 | 388 private final Runnable fFilterRunnable= new class() Runnable { |
| 129 | 389 public void run() { |
| 390 if (!fIsFilterPending) | |
| 391 return; | |
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392 |
| 129 | 393 fIsFilterPending= false; |
| 394 | |
| 395 if (!Helper.okToUse(fContentAssistSubjectControlAdapter.getControl())) | |
| 396 return; | |
| 397 | |
| 398 int offset= fContentAssistSubjectControlAdapter.getSelectedRange().x; | |
| 399 ICompletionProposal[] proposals= null; | |
| 400 try { | |
| 401 if (offset > -1) { | |
| 402 DocumentEvent event= TextUtilities.mergeProcessedDocumentEvents(fDocumentEvents); | |
| 403 proposals= computeFilteredProposals(offset, event); | |
| 404 } | |
| 405 } catch (BadLocationException x) { | |
| 406 } finally { | |
| 407 fDocumentEvents.clear(); | |
| 408 } | |
| 409 fFilterOffset= offset; | |
| 410 | |
| 411 if (proposals !is null && proposals.length > 0) | |
| 412 setProposals(proposals, fIsFilteredSubset); | |
| 413 else | |
| 414 hide(); | |
| 415 } | |
| 416 }; | |
| 417 /** | |
| 418 * <code>true</code> if <code>fFilterRunnable</code> has been | |
| 419 * posted, <code>false</code> if not. | |
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420 * |
| 129 | 421 * @since 3.1.1 |
| 422 */ | |
| 423 private bool fIsFilterPending= false; | |
| 424 /** | |
| 425 * The info message at the bottom of the popup, or <code>null</code> for no popup (if | |
| 426 * ContentAssistant does not provide one). | |
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427 * |
| 129 | 428 * @since 3.2 |
| 429 */ | |
| 430 private Label fMessageText; | |
| 431 /** | |
| 432 * The font used for <code>fMessageText</code> or null; dispose when done. | |
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433 * |
| 129 | 434 * @since 3.2 |
| 435 */ | |
| 436 private Font fMessageTextFont; | |
| 437 /** | |
| 438 * The most recent completion offset (used to determine repeated invocation) | |
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439 * |
| 129 | 440 * @since 3.2 |
| 441 */ | |
| 442 private int fLastCompletionOffset; | |
| 443 /** | |
| 444 * The (reusable) empty proposal. | |
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445 * |
| 129 | 446 * @since 3.2 |
| 447 */ | |
| 146 | 448 private const EmptyProposal fEmptyProposal= new EmptyProposal(); |
| 129 | 449 /** |
| 450 * The text for the empty proposal, or <code>null</code> to use the default text. | |
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451 * |
| 129 | 452 * @since 3.2 |
| 453 */ | |
| 454 private String fEmptyMessage= null; | |
| 455 /** | |
| 456 * Tells whether colored labels support is enabled. | |
| 457 * Only valid while the popup is active. | |
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458 * |
| 129 | 459 * @since 3.4 |
| 460 */ | |
| 461 private bool fIsColoredLabelsSupportEnabled= false; | |
| 462 | |
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463 |
| 129 | 464 /** |
| 465 * Creates a new completion proposal popup for the given elements. | |
| 466 * | |
| 467 * @param contentAssistant the content assistant feeding this popup | |
| 468 * @param viewer the viewer on top of which this popup appears | |
| 469 * @param infoController the information control collaborating with this popup | |
| 470 * @since 2.0 | |
| 471 */ | |
|
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472 public this(ContentAssistant contentAssistant, ITextViewer viewer, AdditionalInfoController infoController) { |
| 129 | 473 fContentAssistant= contentAssistant; |
| 474 fViewer= viewer; | |
| 475 fAdditionalInfoController= infoController; | |
| 476 fContentAssistSubjectControlAdapter= new ContentAssistSubjectControlAdapter(fViewer); | |
| 477 } | |
| 478 | |
| 479 /** | |
| 480 * Creates a new completion proposal popup for the given elements. | |
| 481 * | |
| 482 * @param contentAssistant the content assistant feeding this popup | |
| 483 * @param contentAssistSubjectControl the content assist subject control on top of which this popup appears | |
| 484 * @param infoController the information control collaborating with this popup | |
| 485 * @since 3.0 | |
| 486 */ | |
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487 public this(ContentAssistant contentAssistant, IContentAssistSubjectControl contentAssistSubjectControl, AdditionalInfoController infoController) { |
| 129 | 488 fContentAssistant= contentAssistant; |
| 489 fContentAssistSubjectControl= contentAssistSubjectControl; | |
| 490 fAdditionalInfoController= infoController; | |
| 491 fContentAssistSubjectControlAdapter= new ContentAssistSubjectControlAdapter(fContentAssistSubjectControl); | |
| 492 } | |
| 493 | |
| 494 /** | |
| 495 * Computes and presents completion proposals. The flag indicates whether this call has | |
| 496 * be made out of an auto activation context. | |
| 497 * | |
| 498 * @param autoActivated <code>true</code> if auto activation context | |
| 499 * @return an error message or <code>null</code> in case of no error | |
| 500 */ | |
| 158 | 501 public String showProposals(bool autoActivated) { |
| 129 | 502 |
| 503 if (fKeyListener is null) | |
| 504 fKeyListener= new ProposalSelectionListener(); | |
| 505 | |
| 506 final Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 507 | |
| 508 if (!Helper.okToUse(fProposalShell) && control !is null && !control.isDisposed()) { | |
| 509 // add the listener before computing the proposals so we don't move the caret | |
| 510 // when the user types fast. | |
| 511 fContentAssistSubjectControlAdapter.addKeyListener(fKeyListener); | |
| 512 | |
| 158 | 513 BusyIndicator.showWhile(control.getDisplay(), dgRunnable((bool autoActivated_) { |
| 129 | 514 |
| 158 | 515 fInvocationOffset= fContentAssistSubjectControlAdapter.getSelectedRange().x; |
| 516 fFilterOffset= fInvocationOffset; | |
| 517 fLastCompletionOffset= fFilterOffset; | |
| 518 fComputedProposals= computeProposals(fInvocationOffset); | |
| 129 | 519 |
| 158 | 520 int count= (fComputedProposals is null ? 0 : fComputedProposals.length); |
| 521 if (count is 0 && hideWhenNoProposals(autoActivated_)) | |
| 522 return; | |
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523 |
| 158 | 524 if (count is 1 && !autoActivated_ && canAutoInsert(fComputedProposals[0])) { |
| 525 insertProposal(fComputedProposals[0], cast(wchar) 0, 0, fInvocationOffset); | |
| 526 hide(); | |
| 527 } else { | |
| 528 createProposalSelector(); | |
| 529 setProposals(fComputedProposals, false); | |
| 530 displayProposals(); | |
| 129 | 531 } |
| 158 | 532 }, autoActivated )); |
| 129 | 533 } else { |
| 534 fLastCompletionOffset= fFilterOffset; | |
| 535 handleRepeatedInvocation(); | |
| 536 } | |
| 537 | |
| 538 return getErrorMessage(); | |
| 539 } | |
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540 |
| 129 | 541 /** |
| 542 * Hides the popup and returns <code>true</code> if the popup is configured | |
| 543 * to never display an empty list. Returns <code>false</code> otherwise. | |
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544 * |
| 129 | 545 * @param autoActivated whether the invocation was auto-activated |
| 546 * @return <code>false</code> if an empty list should be displayed, <code>true</code> otherwise | |
| 547 * @since 3.2 | |
| 548 */ | |
| 549 private bool hideWhenNoProposals(bool autoActivated) { | |
| 550 if (autoActivated || !fContentAssistant.isShowEmptyList()) { | |
| 551 if (!autoActivated) { | |
| 552 Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 553 if (control !is null && !control.isDisposed()) | |
| 554 control.getDisplay().beep(); | |
| 555 } | |
| 556 hide(); | |
| 557 return true; | |
| 558 } | |
| 559 return false; | |
| 560 } | |
| 561 | |
| 562 /** | |
| 563 * If content assist is set up to handle cycling, then the proposals are recomputed. Otherwise, | |
| 564 * nothing happens. | |
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565 * |
| 129 | 566 * @since 3.2 |
| 567 */ | |
| 568 private void handleRepeatedInvocation() { | |
| 569 if (fContentAssistant.isRepeatedInvocationMode()) { | |
| 570 fComputedProposals= computeProposals(fFilterOffset); | |
| 571 setProposals(fComputedProposals, false); | |
| 572 } | |
| 573 } | |
| 574 | |
| 575 /** | |
| 576 * Returns the completion proposal available at the given offset of the | |
| 577 * viewer's document. Delegates the work to the content assistant. | |
| 578 * | |
| 579 * @param offset the offset | |
| 580 * @return the completion proposals available at this offset | |
| 581 */ | |
| 582 private ICompletionProposal[] computeProposals(int offset) { | |
| 583 if (fContentAssistSubjectControl !is null) | |
| 584 return fContentAssistant.computeCompletionProposals(fContentAssistSubjectControl, offset); | |
| 585 return fContentAssistant.computeCompletionProposals(fViewer, offset); | |
| 586 } | |
| 587 | |
| 588 /** | |
| 589 * Returns the error message. | |
| 590 * | |
| 591 * @return the error message | |
| 592 */ | |
| 593 private String getErrorMessage() { | |
| 594 return fContentAssistant.getErrorMessage(); | |
| 595 } | |
| 596 | |
| 597 /** | |
| 598 * Creates the proposal selector. | |
| 599 */ | |
| 600 private void createProposalSelector() { | |
| 601 if (Helper.okToUse(fProposalShell)) | |
| 602 return; | |
| 603 | |
| 604 Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 605 fProposalShell= new Shell(control.getShell(), DWT.ON_TOP | DWT.RESIZE ); | |
| 606 fProposalShell.setFont(JFaceResources.getDefaultFont()); | |
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607 if (USE_VIRTUAL) { |
| 129 | 608 fProposalTable= new Table(fProposalShell, DWT.H_SCROLL | DWT.V_SCROLL | DWT.VIRTUAL); |
| 609 | |
| 135 | 610 Listener listener= new class() Listener { |
| 129 | 611 public void handleEvent(Event event) { |
| 612 handleSetData(event); | |
| 613 } | |
| 614 }; | |
| 615 fProposalTable.addListener(DWT.SetData, listener); | |
| 616 } else { | |
| 617 fProposalTable= new Table(fProposalShell, DWT.H_SCROLL | DWT.V_SCROLL); | |
| 618 } | |
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619 |
| 129 | 620 fIsColoredLabelsSupportEnabled= fContentAssistant.isColoredLabelsSupportEnabled(); |
| 621 if (fIsColoredLabelsSupportEnabled) | |
| 622 TableOwnerDrawSupport.install(fProposalTable); | |
| 623 | |
| 624 fProposalTable.setLocation(0, 0); | |
| 625 if (fAdditionalInfoController !is null) | |
| 626 fAdditionalInfoController.setSizeConstraints(50, 10, true, true); | |
| 627 | |
| 628 GridLayout layout= new GridLayout(); | |
| 629 layout.marginWidth= 0; | |
| 630 layout.marginHeight= 0; | |
| 631 layout.verticalSpacing= 1; | |
| 632 fProposalShell.setLayout(layout); | |
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633 |
| 129 | 634 if (fContentAssistant.isStatusLineVisible()) { |
| 635 createMessageText(); | |
| 636 } | |
| 637 | |
| 638 GridData data= new GridData(GridData.FILL_BOTH); | |
| 639 | |
| 640 Point size= fContentAssistant.restoreCompletionProposalPopupSize(); | |
| 641 if (size !is null) { | |
| 642 fProposalTable.setLayoutData(data); | |
| 643 fProposalShell.setSize(size); | |
| 644 } else { | |
| 645 int height= fProposalTable.getItemHeight() * 10; | |
| 646 // use golden ratio as default aspect ratio | |
| 647 final double aspectRatio= (1 + Math.sqrt(5)) / 2; | |
| 134 | 648 int width= cast(int) (height * aspectRatio); |
| 129 | 649 Rectangle trim= fProposalTable.computeTrim(0, 0, width, height); |
| 650 data.heightHint= trim.height; | |
| 651 data.widthHint= trim.width; | |
| 652 fProposalTable.setLayoutData(data); | |
| 653 fProposalShell.pack(); | |
| 654 } | |
| 655 fContentAssistant.addToLayout(this, fProposalShell, ContentAssistant.LayoutManager.LAYOUT_PROPOSAL_SELECTOR, fContentAssistant.getSelectionOffset()); | |
| 656 | |
| 135 | 657 fProposalShell.addControlListener(new class() ControlListener { |
| 129 | 658 |
| 659 public void controlMoved(ControlEvent e) {} | |
| 660 | |
| 661 public void controlResized(ControlEvent e) { | |
| 662 if (fAdditionalInfoController !is null) { | |
| 663 // reset the cached resize constraints | |
| 664 fAdditionalInfoController.setSizeConstraints(50, 10, true, false); | |
| 665 } | |
| 666 | |
| 667 fSize= fProposalShell.getSize(); | |
| 668 } | |
| 669 }); | |
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670 |
| 129 | 671 fProposalShell.setBackground(control.getDisplay().getSystemColor(DWT.COLOR_GRAY)); |
| 672 | |
| 673 Color c= getBackgroundColor(control); | |
| 674 fProposalTable.setBackground(c); | |
| 675 | |
| 676 c= getForegroundColor(control); | |
| 677 fProposalTable.setForeground(c); | |
| 678 | |
| 135 | 679 fProposalTable.addSelectionListener(new class() SelectionListener { |
| 129 | 680 |
| 681 public void widgetSelected(SelectionEvent e) {} | |
| 682 | |
| 683 public void widgetDefaultSelected(SelectionEvent e) { | |
| 684 insertSelectedProposalWithMask(e.stateMask); | |
| 685 } | |
| 686 }); | |
| 687 | |
| 688 fPopupCloser.install(fContentAssistant, fProposalTable, fAdditionalInfoController); | |
| 689 | |
| 135 | 690 fProposalShell.addDisposeListener(new class() DisposeListener { |
| 129 | 691 public void widgetDisposed(DisposeEvent e) { |
| 692 unregister(); // but don't dispose the shell, since we're being called from its disposal event! | |
| 693 } | |
| 694 }); | |
| 695 | |
| 696 fProposalTable.setHeaderVisible(false); | |
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697 |
| 129 | 698 addCommandSupport(fProposalTable); |
| 699 } | |
| 700 | |
| 701 /** | |
| 702 * Returns the minimal required height for the proposal, may return 0 if the popup has not been | |
| 703 * created yet. | |
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704 * |
| 129 | 705 * @return the minimal height |
| 706 * @since 3.3 | |
| 707 */ | |
| 708 int getMinimalHeight() { | |
| 709 int height= 0; | |
| 710 if (Helper.okToUse(fProposalTable)) { | |
| 711 int items= fProposalTable.getItemHeight() * 10; | |
| 712 Rectangle trim= fProposalTable.computeTrim(0, 0, DWT.DEFAULT, items); | |
| 713 height= trim.height; | |
| 714 } | |
| 715 if (Helper.okToUse(fMessageText)) | |
| 716 height+= fMessageText.getSize().y + 1; | |
| 717 return height; | |
| 718 } | |
| 719 | |
| 720 /** | |
| 721 * Adds command support to the given control. | |
|
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722 * |
| 129 | 723 * @param control the control to watch for focus |
| 724 * @since 3.2 | |
| 725 */ | |
| 158 | 726 private void addCommandSupport(Control control) { |
| 129 | 727 final KeySequence commandSequence= fContentAssistant.getRepeatedInvocationKeySequence(); |
| 728 if (commandSequence !is null && !commandSequence.isEmpty() && fContentAssistant.isRepeatedInvocationMode()) { | |
| 158 | 729 control.addFocusListener(new class(control,commandSequence) FocusListener { |
| 730 Control control_; | |
| 731 KeySequence commandSequence_; | |
| 732 this(Control a, KeySequence b){ | |
| 733 control_=a; | |
| 734 commandSequence_=b; | |
| 735 } | |
| 129 | 736 private CommandKeyListener fCommandKeyListener; |
| 737 public void focusGained(FocusEvent e) { | |
| 158 | 738 if (Helper.okToUse(control_)) { |
| 129 | 739 if (fCommandKeyListener is null) { |
| 158 | 740 fCommandKeyListener= new CommandKeyListener(commandSequence_); |
| 129 | 741 fProposalTable.addKeyListener(fCommandKeyListener); |
| 742 } | |
| 743 } | |
| 744 } | |
| 745 public void focusLost(FocusEvent e) { | |
| 746 if (fCommandKeyListener !is null) { | |
| 158 | 747 control_.removeKeyListener(fCommandKeyListener); |
| 129 | 748 fCommandKeyListener= null; |
| 749 } | |
| 750 } | |
| 751 }); | |
| 752 } | |
| 158 | 753 control.addFocusListener(new class(control) FocusListener { |
| 754 Control control_; | |
| 129 | 755 private TraverseListener fTraverseListener; |
| 158 | 756 this(Control a){ |
| 757 control_=a; | |
| 758 } | |
| 129 | 759 public void focusGained(FocusEvent e) { |
| 158 | 760 if (Helper.okToUse(control_)) { |
| 129 | 761 if (fTraverseListener is null) { |
| 135 | 762 fTraverseListener= new class() TraverseListener { |
| 129 | 763 public void keyTraversed(TraverseEvent event) { |
| 764 if (event.detail is DWT.TRAVERSE_TAB_NEXT) { | |
| 765 IInformationControl iControl= fAdditionalInfoController.getCurrentInformationControl2(); | |
| 766 if (fAdditionalInfoController.getInternalAccessor().canReplace(iControl)) { | |
| 767 fAdditionalInfoController.getInternalAccessor().replaceInformationControl(true); | |
| 768 event.doit= false; | |
| 769 } | |
| 770 } | |
| 771 } | |
| 772 }; | |
| 773 fProposalTable.addTraverseListener(fTraverseListener); | |
| 774 } | |
| 775 } | |
| 776 } | |
| 777 public void focusLost(FocusEvent e) { | |
| 778 if (fTraverseListener !is null) { | |
| 158 | 779 control_.removeTraverseListener(fTraverseListener); |
| 129 | 780 fTraverseListener= null; |
| 781 } | |
| 782 } | |
| 783 }); | |
| 784 } | |
| 785 | |
| 786 /** | |
| 787 * Returns the background color to use. | |
|
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788 * |
| 129 | 789 * @param control the control to get the display from |
| 790 * @return the background color | |
| 791 * @since 3.2 | |
| 792 */ | |
| 793 private Color getBackgroundColor(Control control) { | |
| 794 Color c= fContentAssistant.getProposalSelectorBackground(); | |
| 795 if (c is null) | |
| 796 c= JFaceResources.getColorRegistry().get(JFacePreferences.CONTENT_ASSIST_BACKGROUND_COLOR); | |
| 797 return c; | |
| 798 } | |
| 799 | |
| 800 /** | |
| 801 * Returns the foreground color to use. | |
|
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802 * |
| 129 | 803 * @param control the control to get the display from |
| 804 * @return the foreground color | |
| 805 * @since 3.2 | |
| 806 */ | |
| 807 private Color getForegroundColor(Control control) { | |
| 808 Color c= fContentAssistant.getProposalSelectorForeground(); | |
| 809 if (c is null) | |
| 810 c= JFaceResources.getColorRegistry().get(JFacePreferences.CONTENT_ASSIST_FOREGROUND_COLOR); | |
| 811 return c; | |
| 812 } | |
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813 |
| 129 | 814 /** |
| 815 * Creates the caption line under the proposal table. | |
|
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816 * |
| 129 | 817 * @since 3.2 |
| 818 */ | |
| 819 private void createMessageText() { | |
| 820 if (fMessageText is null) { | |
| 821 fMessageText= new Label(fProposalShell, DWT.RIGHT); | |
| 822 GridData textData= new GridData(DWT.FILL, DWT.BOTTOM, true, false); | |
| 823 fMessageText.setLayoutData(textData); | |
| 824 fMessageText.setText(fContentAssistant.getStatusMessage() + " "); //$NON-NLS-1$ | |
| 825 if (fMessageTextFont is null) { | |
| 826 Font font= fMessageText.getFont(); | |
| 827 Display display= fProposalShell.getDisplay(); | |
| 828 FontData[] fontDatas= font.getFontData(); | |
| 829 for (int i= 0; i < fontDatas.length; i++) | |
| 830 fontDatas[i].setHeight(fontDatas[i].getHeight() * 9 / 10); | |
| 831 fMessageTextFont= new Font(display, fontDatas); | |
| 832 } | |
| 833 fMessageText.setFont(fMessageTextFont); | |
| 834 fMessageText.setBackground(getBackgroundColor(fProposalShell)); | |
| 835 fMessageText.setForeground(getForegroundColor(fProposalShell)); | |
| 836 | |
| 837 if (fContentAssistant.isRepeatedInvocationMode()) { | |
| 838 fMessageText.setCursor(fProposalShell.getDisplay().getSystemCursor(DWT.CURSOR_HAND)); | |
| 135 | 839 fMessageText.addMouseListener(new class() MouseAdapter { |
| 129 | 840 public void mouseUp(MouseEvent e) { |
| 841 fLastCompletionOffset= fFilterOffset; | |
| 842 fProposalTable.setFocus(); | |
| 843 handleRepeatedInvocation(); | |
| 844 } | |
| 845 | |
| 846 public void mouseDown(MouseEvent e) { | |
| 847 } | |
| 848 }); | |
| 849 } | |
| 850 } | |
| 851 } | |
| 852 | |
| 853 /* | |
| 854 * @since 3.1 | |
| 855 */ | |
| 856 private void handleSetData(Event event) { | |
| 134 | 857 TableItem item= cast(TableItem) event.item; |
| 129 | 858 int index= fProposalTable.indexOf(item); |
| 859 | |
| 860 if (0 <= index && index < fFilteredProposals.length) { | |
| 861 ICompletionProposal current= fFilteredProposals[index]; | |
| 862 | |
| 863 String displayString; | |
| 864 StyleRange[] styleRanges= null; | |
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865 if (fIsColoredLabelsSupportEnabled && cast(ICompletionProposalExtension6)current ) { |
| 134 | 866 StyledString styledString= (cast(ICompletionProposalExtension6)current).getStyledDisplayString(); |
| 129 | 867 displayString= styledString.getString(); |
| 868 styleRanges= styledString.getStyleRanges(); | |
| 869 } else | |
| 870 displayString= current.getDisplayString(); | |
| 871 | |
| 872 item.setText(displayString); | |
| 873 if (fIsColoredLabelsSupportEnabled) | |
| 874 TableOwnerDrawSupport.storeStyleRanges(item, 0, styleRanges); | |
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875 |
| 129 | 876 item.setImage(current.getImage()); |
| 877 item.setData(current); | |
| 878 } else { | |
| 879 // this should not happen, but does on win32 | |
| 880 } | |
| 881 } | |
| 882 | |
| 883 /** | |
| 884 * Returns the proposal selected in the proposal selector. | |
| 885 * | |
| 886 * @return the selected proposal | |
| 887 * @since 2.0 | |
| 888 */ | |
| 889 private ICompletionProposal getSelectedProposal() { | |
| 890 /* Make sure that there is no filter runnable pending. | |
| 891 * See https://bugs.eclipse.org/bugs/show_bug.cgi?id=31427 | |
| 892 */ | |
| 893 if (fIsFilterPending) | |
| 894 fFilterRunnable.run(); | |
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895 |
| 129 | 896 // filter runnable may have hidden the proposals |
| 897 if (!Helper.okToUse(fProposalTable)) | |
| 898 return null; | |
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899 |
| 129 | 900 int i= fProposalTable.getSelectionIndex(); |
| 901 if (fFilteredProposals is null || i < 0 || i >= fFilteredProposals.length) | |
| 902 return null; | |
| 903 return fFilteredProposals[i]; | |
| 904 } | |
| 905 | |
| 906 /** | |
| 907 * Takes the selected proposal and applies it. | |
| 908 * | |
| 909 * @param stateMask the state mask | |
| 910 * @since 3.2 | |
| 911 */ | |
| 912 private void insertSelectedProposalWithMask(int stateMask) { | |
| 913 ICompletionProposal p= getSelectedProposal(); | |
| 914 hide(); | |
| 915 if (p !is null) | |
| 134 | 916 insertProposal(p, cast(wchar) 0, stateMask, fContentAssistSubjectControlAdapter.getSelectedRange().x); |
| 129 | 917 } |
| 918 | |
| 919 /** | |
| 920 * Applies the given proposal at the given offset. The given character is the | |
| 921 * one that triggered the insertion of this proposal. | |
| 922 * | |
| 923 * @param p the completion proposal | |
| 924 * @param trigger the trigger character | |
| 925 * @param stateMask the state mask | |
| 926 * @param offset the offset | |
| 927 * @since 2.1 | |
| 928 */ | |
| 158 | 929 private void insertProposal(ICompletionProposal p, char trigger, int stateMask, int offset) { |
| 129 | 930 |
| 931 fInserting= true; | |
| 932 IRewriteTarget target= null; | |
| 158 | 933 IEditingSupport helper= new class(offset) IEditingSupport { |
| 934 int offset_; | |
| 935 this(int a){ | |
| 936 offset_=a; | |
| 937 } | |
| 129 | 938 public bool isOriginator(DocumentEvent event, IRegion focus) { |
| 158 | 939 return focus.getOffset() <= offset_ && focus.getOffset() + focus.getLength() >= offset_; |
| 129 | 940 } |
| 941 | |
| 942 public bool ownsFocusShell() { | |
| 943 return false; | |
| 944 } | |
| 945 | |
| 946 }; | |
| 947 | |
| 948 try { | |
| 949 | |
| 950 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 951 | |
| 138 | 952 if ( cast(ITextViewerExtension)fViewer ) { |
| 134 | 953 ITextViewerExtension extension= cast(ITextViewerExtension) fViewer; |
| 129 | 954 target= extension.getRewriteTarget(); |
| 955 } | |
| 956 | |
| 957 if (target !is null) | |
| 958 target.beginCompoundChange(); | |
| 959 | |
| 138 | 960 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 961 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 962 registry.register(helper); |
| 963 } | |
| 964 | |
| 965 | |
|
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966 if (cast(ICompletionProposalExtension2)p && fViewer !is null) { |
| 134 | 967 ICompletionProposalExtension2 e= cast(ICompletionProposalExtension2) p; |
| 129 | 968 e.apply(fViewer, trigger, stateMask, offset); |
| 138 | 969 } else if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 970 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p; |
| 129 | 971 e.apply(document, trigger, offset); |
| 972 } else { | |
| 973 p.apply(document); | |
| 974 } | |
| 975 | |
| 976 Point selection= p.getSelection(document); | |
| 977 if (selection !is null) { | |
| 978 fContentAssistSubjectControlAdapter.setSelectedRange(selection.x, selection.y); | |
| 979 fContentAssistSubjectControlAdapter.revealRange(selection.x, selection.y); | |
| 980 } | |
| 981 | |
| 982 IContextInformation info= p.getContextInformation(); | |
| 983 if (info !is null) { | |
| 984 | |
| 985 int contextInformationOffset; | |
| 138 | 986 if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 987 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p; |
| 129 | 988 contextInformationOffset= e.getContextInformationPosition(); |
| 989 } else { | |
| 990 if (selection is null) | |
| 991 selection= fContentAssistSubjectControlAdapter.getSelectedRange(); | |
| 992 contextInformationOffset= selection.x + selection.y; | |
| 993 } | |
| 994 | |
| 995 fContentAssistant.showContextInformation(info, contextInformationOffset); | |
| 996 } else | |
| 997 fContentAssistant.showContextInformation(null, -1); | |
| 998 | |
| 999 | |
| 1000 } finally { | |
| 1001 if (target !is null) | |
| 1002 target.endCompoundChange(); | |
| 1003 | |
| 138 | 1004 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 1005 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 1006 registry.unregister(helper); |
| 1007 } | |
| 1008 fInserting= false; | |
| 1009 } | |
| 1010 } | |
| 1011 | |
| 1012 /** | |
| 1013 * Returns whether this popup has the focus. | |
| 1014 * | |
| 1015 * @return <code>true</code> if the popup has the focus | |
| 1016 */ | |
| 1017 public bool hasFocus() { | |
| 1018 if (Helper.okToUse(fProposalShell)) { | |
| 1019 if ((fProposalShell.isFocusControl() || fProposalTable.isFocusControl())) | |
| 1020 return true; | |
| 1021 /* | |
| 1022 * We have to delegate this query to the additional info controller | |
| 1023 * as well, since the content assistant is the widget token owner | |
| 1024 * and its closer does not know that the additional info control can | |
| 1025 * now also take focus. | |
| 1026 */ | |
| 1027 if (fAdditionalInfoController !is null) { | |
| 1028 IInformationControl informationControl= fAdditionalInfoController.getCurrentInformationControl2(); | |
| 1029 if (informationControl !is null && informationControl.isFocusControl()) | |
| 1030 return true; | |
| 1031 InformationControlReplacer replacer= fAdditionalInfoController.getInternalAccessor().getInformationControlReplacer(); | |
| 1032 if (replacer !is null) { | |
| 1033 informationControl= replacer.getCurrentInformationControl2(); | |
| 1034 if (informationControl !is null && informationControl.isFocusControl()) | |
| 1035 return true; | |
| 1036 } | |
| 1037 } | |
| 1038 } | |
| 1039 | |
| 1040 return false; | |
| 1041 } | |
| 1042 | |
| 1043 /** | |
| 1044 * Hides this popup. | |
| 1045 */ | |
| 1046 public void hide() { | |
| 1047 | |
| 1048 unregister(); | |
| 1049 | |
| 138 | 1050 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 1051 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 1052 registry.unregister(fFocusHelper); |
| 1053 } | |
| 1054 | |
| 1055 if (Helper.okToUse(fProposalShell)) { | |
| 1056 | |
| 1057 fContentAssistant.removeContentAssistListener(this, ContentAssistant.PROPOSAL_SELECTOR); | |
| 1058 | |
| 1059 fPopupCloser.uninstall(); | |
| 1060 fProposalShell.setVisible(false); | |
| 1061 fProposalShell.dispose(); | |
| 1062 fProposalShell= null; | |
| 1063 } | |
|
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1064 |
| 129 | 1065 if (fMessageTextFont !is null) { |
| 1066 fMessageTextFont.dispose(); | |
| 1067 fMessageTextFont= null; | |
| 1068 } | |
|
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1069 |
| 129 | 1070 if (fMessageText !is null) { |
| 1071 fMessageText= null; | |
| 1072 } | |
|
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1073 |
| 129 | 1074 fEmptyMessage= null; |
|
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1075 |
| 129 | 1076 fLastCompletionOffset= -1; |
|
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1077 |
| 129 | 1078 fContentAssistant.fireSessionEndEvent(); |
| 1079 } | |
| 1080 | |
| 1081 /** | |
| 1082 * Unregister this completion proposal popup. | |
| 1083 * | |
| 1084 * @since 3.0 | |
| 1085 */ | |
| 1086 private void unregister() { | |
| 1087 if (fDocumentListener !is null) { | |
| 1088 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1089 if (document !is null) | |
| 1090 document.removeDocumentListener(fDocumentListener); | |
| 1091 fDocumentListener= null; | |
| 1092 } | |
| 1093 fDocumentEvents.clear(); | |
| 1094 | |
| 1095 if (fKeyListener !is null && fContentAssistSubjectControlAdapter.getControl() !is null && !fContentAssistSubjectControlAdapter.getControl().isDisposed()) { | |
| 1096 fContentAssistSubjectControlAdapter.removeKeyListener(fKeyListener); | |
| 1097 fKeyListener= null; | |
| 1098 } | |
| 1099 | |
| 1100 if (fLastProposal !is null) { | |
|
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1101 if (cast(ICompletionProposalExtension2)fLastProposal && fViewer !is null) { |
| 134 | 1102 ICompletionProposalExtension2 extension= cast(ICompletionProposalExtension2) fLastProposal; |
| 129 | 1103 extension.unselected(fViewer); |
| 1104 } | |
| 1105 fLastProposal= null; | |
| 1106 } | |
| 1107 | |
| 1108 fFilteredProposals= null; | |
| 1109 fComputedProposals= null; | |
| 1110 | |
| 1111 fContentAssistant.possibleCompletionsClosed(); | |
| 1112 } | |
| 1113 | |
| 1114 /** | |
| 1115 *Returns whether this popup is active. It is active if the proposal selector is visible. | |
| 1116 * | |
| 1117 * @return <code>true</code> if this popup is active | |
| 1118 */ | |
| 1119 public bool isActive() { | |
| 1120 return fProposalShell !is null && !fProposalShell.isDisposed(); | |
| 1121 } | |
| 1122 | |
| 1123 /** | |
| 1124 * Initializes the proposal selector with these given proposals. | |
| 1125 * @param proposals the proposals | |
| 1126 * @param isFilteredSubset if <code>true</code>, the proposal table is | |
| 1127 * not cleared, but the proposals that are not in the passed array | |
| 1128 * are removed from the displayed set | |
| 1129 */ | |
| 1130 private void setProposals(ICompletionProposal[] proposals, bool isFilteredSubset) { | |
| 1131 ICompletionProposal[] oldProposals= fFilteredProposals; | |
| 1132 ICompletionProposal oldProposal= getSelectedProposal(); // may trigger filtering and a reentrant call to setProposals() | |
| 1133 if (oldProposals !is fFilteredProposals) // reentrant call was first - abort | |
| 1134 return; | |
| 1135 | |
| 1136 if (Helper.okToUse(fProposalTable)) { | |
|
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1137 if (cast(ICompletionProposalExtension2)oldProposal && fViewer !is null) |
| 134 | 1138 (cast(ICompletionProposalExtension2) oldProposal).unselected(fViewer); |
|
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1139 |
| 129 | 1140 if (proposals is null || proposals.length is 0) { |
| 1141 fEmptyProposal.fOffset= fFilterOffset; | |
| 1142 fEmptyProposal.fDisplayString= fEmptyMessage !is null ? fEmptyMessage : JFaceTextMessages.getString("CompletionProposalPopup.no_proposals"); //$NON-NLS-1$ | |
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1143 proposals= [ fEmptyProposal ]; |
| 129 | 1144 } |
| 1145 | |
| 1146 fFilteredProposals= proposals; | |
| 1147 final int newLen= proposals.length; | |
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1148 if (USE_VIRTUAL) { |
| 129 | 1149 fProposalTable.setItemCount(newLen); |
| 1150 fProposalTable.clearAll(); | |
| 1151 } else { | |
| 1152 fProposalTable.setRedraw(false); | |
| 1153 fProposalTable.setItemCount(newLen); | |
| 1154 TableItem[] items= fProposalTable.getItems(); | |
| 1155 for (int i= 0; i < items.length; i++) { | |
| 1156 TableItem item= items[i]; | |
| 1157 ICompletionProposal proposal= proposals[i]; | |
| 1158 item.setText(proposal.getDisplayString()); | |
| 1159 item.setImage(proposal.getImage()); | |
| 1160 item.setData(proposal); | |
| 1161 } | |
| 1162 fProposalTable.setRedraw(true); | |
| 1163 } | |
| 1164 | |
| 1165 Point currentLocation= fProposalShell.getLocation(); | |
| 1166 Point newLocation= getLocation(); | |
| 1167 if ((newLocation.x < currentLocation.x && newLocation.y is currentLocation.y) || newLocation.y < currentLocation.y) | |
| 1168 fProposalShell.setLocation(newLocation); | |
| 1169 | |
| 1170 selectProposal(0, false); | |
| 1171 } | |
| 1172 } | |
| 1173 | |
| 1174 /** | |
| 1175 * Returns the graphical location at which this popup should be made visible. | |
| 1176 * | |
| 1177 * @return the location of this popup | |
| 1178 */ | |
| 1179 private Point getLocation() { | |
| 1180 int caret= fContentAssistSubjectControlAdapter.getCaretOffset(); | |
| 1181 Rectangle location= fContentAssistant.getLayoutManager().computeBoundsBelowAbove(fProposalShell, fSize is null ? fProposalShell.getSize() : fSize, caret, this); | |
| 1182 return Geometry.getLocation(location); | |
| 1183 } | |
| 1184 | |
| 1185 /** | |
| 1186 * Returns the size of this completion proposal popup. | |
| 1187 * | |
| 1188 * @return a Point containing the size | |
| 1189 * @since 3.0 | |
| 1190 */ | |
| 1191 Point getSize() { | |
| 1192 return fSize; | |
| 1193 } | |
| 1194 | |
| 1195 /** | |
| 1196 * Displays this popup and install the additional info controller, so that additional info | |
| 1197 * is displayed when a proposal is selected and additional info is available. | |
| 1198 */ | |
| 1199 private void displayProposals() { | |
| 1200 | |
| 1201 if (!Helper.okToUse(fProposalShell) || !Helper.okToUse(fProposalTable)) | |
| 1202 return; | |
| 1203 | |
| 1204 if (fContentAssistant.addContentAssistListener(this, ContentAssistant.PROPOSAL_SELECTOR)) { | |
| 1205 | |
| 1206 ensureDocumentListenerInstalled(); | |
|
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1207 |
| 129 | 1208 if (fFocusHelper is null) { |
| 135 | 1209 fFocusHelper= new class() IEditingSupport { |
| 129 | 1210 |
| 1211 public bool isOriginator(DocumentEvent event, IRegion focus) { | |
| 1212 return false; // this helper just covers the focus change to the proposal shell, no remote editions | |
| 1213 } | |
| 1214 | |
| 1215 public bool ownsFocusShell() { | |
| 1216 return true; | |
| 1217 } | |
| 1218 | |
| 1219 }; | |
| 1220 } | |
| 138 | 1221 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 1222 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 1223 registry.register(fFocusHelper); |
| 1224 } | |
| 1225 | |
| 1226 | |
| 1227 /* https://bugs.eclipse.org/bugs/show_bug.cgi?id=52646 | |
| 1228 * on GTK, setVisible and such may run the event loop | |
| 1229 * (see also https://bugs.eclipse.org/bugs/show_bug.cgi?id=47511) | |
| 1230 * Since the user may have already canceled the popup or selected | |
| 1231 * an entry (ESC or RETURN), we have to double check whether | |
| 1232 * the table is still okToUse. See comments below | |
| 1233 */ | |
| 1234 fProposalShell.setVisible(true); // may run event loop on GTK | |
| 1235 // transfer focus since no verify key listener can be attached | |
| 1236 if (!fContentAssistSubjectControlAdapter.supportsVerifyKeyListener() && Helper.okToUse(fProposalShell)) | |
| 1237 fProposalShell.setFocus(); // may run event loop on GTK ?? | |
| 1238 | |
| 1239 if (fAdditionalInfoController !is null && Helper.okToUse(fProposalTable)) { | |
| 1240 fAdditionalInfoController.install(fProposalTable); | |
| 1241 fAdditionalInfoController.handleTableSelectionChanged(); | |
| 1242 } | |
| 1243 } else | |
| 1244 hide(); | |
| 1245 } | |
| 1246 | |
| 1247 /** | |
| 1248 * Installs the document listener if not already done. | |
| 1249 * | |
| 1250 * @since 3.2 | |
| 1251 */ | |
| 1252 private void ensureDocumentListenerInstalled() { | |
| 1253 if (fDocumentListener is null) { | |
| 135 | 1254 fDocumentListener= new class() IDocumentListener { |
| 129 | 1255 public void documentAboutToBeChanged(DocumentEvent event) { |
| 1256 if (!fInserting) | |
| 1257 fDocumentEvents.add(event); | |
| 1258 } | |
| 1259 | |
| 1260 public void documentChanged(DocumentEvent event) { | |
| 1261 if (!fInserting) | |
| 1262 filterProposals(); | |
| 1263 } | |
| 1264 }; | |
| 1265 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1266 if (document !is null) | |
| 1267 document.addDocumentListener(fDocumentListener); | |
| 1268 } | |
| 1269 } | |
| 1270 | |
| 1271 /* | |
| 1272 * @see IContentAssistListener#verifyKey(VerifyEvent) | |
| 1273 */ | |
| 1274 public bool verifyKey(VerifyEvent e) { | |
| 1275 if (!Helper.okToUse(fProposalShell)) | |
| 1276 return true; | |
| 1277 | |
| 1278 char key= e.character; | |
| 1279 if (key is 0) { | |
| 1280 int newSelection= fProposalTable.getSelectionIndex(); | |
| 1281 int visibleRows= (fProposalTable.getSize().y / fProposalTable.getItemHeight()) - 1; | |
| 1282 int itemCount= fProposalTable.getItemCount(); | |
| 1283 bool smartToggle= false; | |
| 1284 switch (e.keyCode) { | |
| 1285 | |
| 1286 case DWT.ARROW_LEFT : | |
| 1287 case DWT.ARROW_RIGHT : | |
| 1288 filterProposals(); | |
| 1289 return true; | |
| 1290 | |
| 1291 case DWT.ARROW_UP : | |
| 1292 newSelection -= 1; | |
| 1293 if (newSelection < 0) | |
| 1294 newSelection= itemCount - 1; | |
| 1295 break; | |
| 1296 | |
| 1297 case DWT.ARROW_DOWN : | |
| 1298 newSelection += 1; | |
| 1299 if (newSelection > itemCount - 1) | |
| 1300 newSelection= 0; | |
| 1301 break; | |
| 1302 | |
| 1303 case DWT.PAGE_DOWN : | |
| 1304 newSelection += visibleRows; | |
| 1305 if (newSelection >= itemCount) | |
| 1306 newSelection= itemCount - 1; | |
| 1307 break; | |
| 1308 | |
| 1309 case DWT.PAGE_UP : | |
| 1310 newSelection -= visibleRows; | |
| 1311 if (newSelection < 0) | |
| 1312 newSelection= 0; | |
| 1313 break; | |
| 1314 | |
| 1315 case DWT.HOME : | |
| 1316 newSelection= 0; | |
| 1317 break; | |
| 1318 | |
| 1319 case DWT.END : | |
| 1320 newSelection= itemCount - 1; | |
| 1321 break; | |
| 1322 | |
| 1323 default : | |
| 1324 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) | |
| 1325 hide(); | |
| 1326 return true; | |
| 1327 } | |
| 1328 | |
| 1329 selectProposal(newSelection, smartToggle); | |
| 1330 | |
| 1331 e.doit= false; | |
| 1332 return false; | |
| 1333 | |
| 1334 } | |
| 1335 | |
| 1336 // key !is 0 | |
| 1337 switch (key) { | |
| 1338 case 0x1B: // Esc | |
| 1339 e.doit= false; | |
| 1340 hide(); | |
| 1341 break; | |
| 1342 | |
| 1343 case '\n': // Ctrl-Enter on w2k | |
| 1344 case '\r': // Enter | |
| 1345 e.doit= false; | |
| 1346 insertSelectedProposalWithMask(e.stateMask); | |
| 1347 break; | |
| 1348 | |
| 1349 case '\t': | |
| 1350 e.doit= false; | |
| 1351 fProposalShell.setFocus(); | |
| 1352 return false; | |
| 1353 | |
| 1354 default: | |
| 1355 ICompletionProposal p= getSelectedProposal(); | |
| 138 | 1356 if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 1357 ICompletionProposalExtension t= cast(ICompletionProposalExtension) p; |
| 129 | 1358 char[] triggers= t.getTriggerCharacters(); |
| 1359 if (contains(triggers, key)) { | |
| 1360 e.doit= false; | |
| 1361 hide(); | |
| 1362 insertProposal(p, key, e.stateMask, fContentAssistSubjectControlAdapter.getSelectedRange().x); | |
| 1363 } | |
| 1364 } | |
| 1365 } | |
| 1366 | |
| 1367 return true; | |
| 1368 } | |
| 1369 | |
| 1370 /** | |
| 1371 * Selects the entry with the given index in the proposal selector and feeds | |
| 1372 * the selection to the additional info controller. | |
| 1373 * | |
| 1374 * @param index the index in the list | |
| 1375 * @param smartToggle <code>true</code> if the smart toggle key has been pressed | |
| 1376 * @since 2.1 | |
| 1377 */ | |
| 1378 private void selectProposal(int index, bool smartToggle) { | |
| 1379 | |
| 1380 ICompletionProposal oldProposal= getSelectedProposal(); | |
|
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1381 if (cast(ICompletionProposalExtension2)oldProposal && fViewer !is null) |
| 134 | 1382 (cast(ICompletionProposalExtension2) oldProposal).unselected(fViewer); |
| 129 | 1383 |
| 1384 if (fFilteredProposals is null) { | |
| 1385 fireSelectionEvent(null, smartToggle); | |
| 1386 return; | |
| 1387 } | |
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1388 |
| 129 | 1389 ICompletionProposal proposal= fFilteredProposals[index]; |
|
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1390 if (cast(ICompletionProposalExtension2)proposal && fViewer !is null) |
| 134 | 1391 (cast(ICompletionProposalExtension2) proposal).selected(fViewer, smartToggle); |
|
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1392 |
| 129 | 1393 fireSelectionEvent(proposal, smartToggle); |
| 1394 | |
| 1395 fLastProposal= proposal; | |
| 1396 | |
| 1397 fProposalTable.setSelection(index); | |
| 1398 fProposalTable.showSelection(); | |
| 1399 if (fAdditionalInfoController !is null) | |
| 1400 fAdditionalInfoController.handleTableSelectionChanged(); | |
| 1401 } | |
| 1402 | |
| 1403 /** | |
| 1404 * Fires a selection event, see {@link ICompletionListener}. | |
|
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1405 * |
| 129 | 1406 * @param proposal the selected proposal, possibly <code>null</code> |
| 1407 * @param smartToggle true if the smart toggle is on | |
| 1408 * @since 3.2 | |
| 1409 */ | |
| 1410 private void fireSelectionEvent(ICompletionProposal proposal, bool smartToggle) { | |
| 1411 fContentAssistant.fireSelectionEvent(proposal, smartToggle); | |
| 1412 } | |
| 1413 | |
| 1414 /** | |
| 1415 * Returns whether the given character is contained in the given array of | |
| 1416 * characters. | |
| 1417 * | |
| 1418 * @param characters the list of characters | |
| 1419 * @param c the character to look for in the list | |
| 1420 * @return <code>true</code> if character belongs to the list | |
| 1421 * @since 2.0 | |
| 1422 */ | |
| 1423 private bool contains(char[] characters, char c) { | |
| 1424 | |
| 1425 if (characters is null) | |
| 1426 return false; | |
| 1427 | |
| 1428 for (int i= 0; i < characters.length; i++) { | |
| 1429 if (c is characters[i]) | |
| 1430 return true; | |
| 1431 } | |
| 1432 | |
| 1433 return false; | |
| 1434 } | |
| 1435 | |
| 1436 /* | |
| 1437 * @see IEventConsumer#processEvent(VerifyEvent) | |
| 1438 */ | |
| 1439 public void processEvent(VerifyEvent e) { | |
| 1440 } | |
| 1441 | |
| 1442 /** | |
| 1443 * Filters the displayed proposal based on the given cursor position and the | |
| 1444 * offset of the original invocation of the content assistant. | |
| 1445 */ | |
| 1446 private void filterProposals() { | |
| 1447 if (!fIsFilterPending) { | |
| 1448 fIsFilterPending= true; | |
| 1449 Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 1450 control.getDisplay().asyncExec(fFilterRunnable); | |
| 1451 } | |
| 1452 } | |
| 1453 | |
| 1454 /** | |
| 1455 * Computes the subset of already computed proposals that are still valid for | |
| 1456 * the given offset. | |
| 1457 * | |
| 1458 * @param offset the offset | |
| 1459 * @param event the merged document event | |
| 1460 * @return the set of filtered proposals | |
| 1461 * @since 3.0 | |
| 1462 */ | |
| 1463 private ICompletionProposal[] computeFilteredProposals(int offset, DocumentEvent event) { | |
| 1464 | |
| 1465 if (offset is fInvocationOffset && event is null) { | |
| 1466 fIsFilteredSubset= false; | |
| 1467 return fComputedProposals; | |
| 1468 } | |
| 1469 | |
| 1470 if (offset < fInvocationOffset) { | |
| 1471 fIsFilteredSubset= false; | |
| 1472 fInvocationOffset= offset; | |
| 1473 fContentAssistant.fireSessionRestartEvent(); | |
| 1474 fComputedProposals= computeProposals(fInvocationOffset); | |
| 1475 return fComputedProposals; | |
| 1476 } | |
| 1477 | |
| 1478 ICompletionProposal[] proposals; | |
| 1479 if (offset < fFilterOffset) { | |
| 1480 proposals= fComputedProposals; | |
| 1481 fIsFilteredSubset= false; | |
| 1482 } else { | |
| 1483 proposals= fFilteredProposals; | |
| 1484 fIsFilteredSubset= true; | |
| 1485 } | |
| 1486 | |
| 1487 if (proposals is null) { | |
| 1488 fIsFilteredSubset= false; | |
| 1489 return null; | |
| 1490 } | |
| 1491 | |
| 1492 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1493 int length= proposals.length; | |
| 1494 List filtered= new ArrayList(length); | |
| 1495 for (int i= 0; i < length; i++) { | |
| 1496 | |
|
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1497 if (cast(ICompletionProposalExtension2)proposals[i] ) { |
| 129 | 1498 |
| 134 | 1499 ICompletionProposalExtension2 p= cast(ICompletionProposalExtension2) proposals[i]; |
| 129 | 1500 if (p.validate(document, offset, event)) |
| 1501 filtered.add(p); | |
| 1502 | |
|
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1503 } else if (cast(ICompletionProposalExtension)proposals[i] ) { |
| 129 | 1504 |
| 134 | 1505 ICompletionProposalExtension p= cast(ICompletionProposalExtension) proposals[i]; |
| 129 | 1506 if (p.isValidFor(document, offset)) |
| 1507 filtered.add(p); | |
| 1508 | |
| 1509 } else { | |
| 1510 // restore original behavior | |
| 1511 fIsFilteredSubset= false; | |
| 1512 fInvocationOffset= offset; | |
| 1513 fContentAssistant.fireSessionRestartEvent(); | |
| 1514 fComputedProposals= computeProposals(fInvocationOffset); | |
| 1515 return fComputedProposals; | |
| 1516 } | |
| 1517 } | |
| 1518 | |
| 158 | 1519 return arraycast!(ICompletionProposal)( filtered.toArray()); |
| 129 | 1520 } |
| 1521 | |
| 1522 /** | |
| 1523 * Requests the proposal shell to take focus. | |
| 1524 * | |
| 1525 * @since 3.0 | |
| 1526 */ | |
| 1527 public void setFocus() { | |
| 1528 if (Helper.okToUse(fProposalShell)) { | |
| 1529 fProposalShell.setFocus(); | |
| 1530 } | |
| 1531 } | |
|
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1532 |
| 129 | 1533 /** |
| 1534 * Returns <code>true</code> if <code>proposal</code> should be auto-inserted, | |
| 1535 * <code>false</code> otherwise. | |
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1536 * |
| 129 | 1537 * @param proposal the single proposal that might be automatically inserted |
| 1538 * @return <code>true</code> if <code>proposal</code> can be inserted automatically, | |
| 1539 * <code>false</code> otherwise | |
| 1540 * @since 3.1 | |
| 1541 */ | |
| 1542 private bool canAutoInsert(ICompletionProposal proposal) { | |
| 1543 if (fContentAssistant.isAutoInserting()) { | |
| 138 | 1544 if ( cast(ICompletionProposalExtension4)proposal ) { |
| 134 | 1545 ICompletionProposalExtension4 ext= cast(ICompletionProposalExtension4) proposal; |
| 129 | 1546 return ext.isAutoInsertable(); |
| 1547 } | |
| 1548 return true; // default behavior before ICompletionProposalExtension4 was introduced | |
| 1549 } | |
| 1550 return false; | |
| 1551 } | |
| 1552 | |
| 1553 /** | |
| 1554 * Completes the common prefix of all proposals directly in the code. If no | |
| 1555 * common prefix can be found, the proposal popup is shown. | |
| 1556 * | |
| 1557 * @return an error message if completion failed. | |
| 1558 * @since 3.0 | |
| 1559 */ | |
| 1560 public String incrementalComplete() { | |
| 1561 if (Helper.okToUse(fProposalShell) && fFilteredProposals !is null) { | |
| 1562 if (fLastCompletionOffset is fFilterOffset) { | |
| 1563 handleRepeatedInvocation(); | |
| 1564 } else { | |
| 1565 fLastCompletionOffset= fFilterOffset; | |
| 1566 completeCommonPrefix(); | |
| 1567 } | |
| 1568 } else { | |
| 1569 final Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 1570 | |
| 1571 if (fKeyListener is null) | |
| 1572 fKeyListener= new ProposalSelectionListener(); | |
| 1573 | |
| 1574 if (!Helper.okToUse(fProposalShell) && !control.isDisposed()) | |
| 1575 fContentAssistSubjectControlAdapter.addKeyListener(fKeyListener); | |
| 1576 | |
| 135 | 1577 BusyIndicator.showWhile(control.getDisplay(), new class() Runnable { |
| 129 | 1578 public void run() { |
| 1579 | |
| 1580 fInvocationOffset= fContentAssistSubjectControlAdapter.getSelectedRange().x; | |
| 1581 fFilterOffset= fInvocationOffset; | |
| 1582 fLastCompletionOffset= fFilterOffset; | |
| 1583 fFilteredProposals= computeProposals(fInvocationOffset); | |
| 1584 | |
| 1585 int count= (fFilteredProposals is null ? 0 : fFilteredProposals.length); | |
| 1586 if (count is 0 && hideWhenNoProposals(false)) | |
| 1587 return; | |
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1588 |
| 129 | 1589 if (count is 1 && canAutoInsert(fFilteredProposals[0])) { |
| 134 | 1590 insertProposal(fFilteredProposals[0], cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 1591 hide(); |
| 1592 } else { | |
| 1593 ensureDocumentListenerInstalled(); | |
| 1594 if (count > 0 && completeCommonPrefix()) | |
| 1595 hide(); | |
| 1596 else { | |
| 1597 fComputedProposals= fFilteredProposals; | |
| 1598 createProposalSelector(); | |
| 1599 setProposals(fComputedProposals, false); | |
| 1600 displayProposals(); | |
| 1601 } | |
| 1602 } | |
| 1603 } | |
| 1604 }); | |
| 1605 } | |
| 1606 return getErrorMessage(); | |
| 1607 } | |
| 1608 | |
| 1609 /** | |
| 1610 * Acts upon <code>fFilteredProposals</code>: if there is just one valid | |
| 1611 * proposal, it is inserted, otherwise, the common prefix of all proposals | |
| 1612 * is inserted into the document. If there is no common prefix, nothing | |
| 1613 * happens and <code>false</code> is returned. | |
|
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1614 * |
| 129 | 1615 * @return <code>true</code> if a single proposal was inserted and the |
| 1616 * selector can be closed, <code>false</code> otherwise | |
| 1617 * @since 3.0 | |
| 1618 */ | |
| 1619 private bool completeCommonPrefix() { | |
| 1620 | |
| 1621 // 0: insert single proposals | |
| 1622 if (fFilteredProposals.length is 1) { | |
| 1623 if (canAutoInsert(fFilteredProposals[0])) { | |
| 134 | 1624 insertProposal(fFilteredProposals[0], cast(wchar) 0, 0, fFilterOffset); |
| 129 | 1625 hide(); |
| 1626 return true; | |
| 1627 } | |
| 1628 return false; | |
| 1629 } | |
| 1630 | |
| 1631 // 1: extract pre- and postfix from all remaining proposals | |
| 1632 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1633 | |
| 1634 // contains the common postfix in the case that there are any proposals matching our LHS | |
| 1635 StringBuffer rightCasePostfix= null; | |
| 1636 List rightCase= new ArrayList(); | |
| 1637 | |
| 1638 bool isWrongCaseMatch= false; | |
|
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1639 |
| 129 | 1640 // the prefix of all case insensitive matches. This differs from the document |
| 1641 // contents and will be replaced. | |
| 1642 CharSequence wrongCasePrefix= null; | |
| 1643 int wrongCasePrefixStart= 0; | |
| 1644 // contains the common postfix of all case-insensitive matches | |
| 1645 StringBuffer wrongCasePostfix= null; | |
| 1646 List wrongCase= new ArrayList(); | |
| 1647 | |
| 1648 for (int i= 0; i < fFilteredProposals.length; i++) { | |
| 1649 ICompletionProposal proposal= fFilteredProposals[i]; | |
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1650 |
| 138 | 1651 if (!( cast(ICompletionProposalExtension3)proposal )) |
| 129 | 1652 return false; |
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1653 |
| 134 | 1654 int start= (cast(ICompletionProposalExtension3)proposal).getPrefixCompletionStart(fContentAssistSubjectControlAdapter.getDocument(), fFilterOffset); |
| 1655 CharSequence insertion= (cast(ICompletionProposalExtension3)proposal).getPrefixCompletionText(fContentAssistSubjectControlAdapter.getDocument(), fFilterOffset); | |
| 129 | 1656 if (insertion is null) |
| 1657 insertion= proposal.getDisplayString(); | |
| 1658 try { | |
| 1659 int prefixLength= fFilterOffset - start; | |
| 1660 int relativeCompletionOffset= Math.min(insertion.length(), prefixLength); | |
| 1661 String prefix= document.get(start, prefixLength); | |
| 1662 if (!isWrongCaseMatch && insertion.toString().startsWith(prefix)) { | |
| 1663 isWrongCaseMatch= false; | |
| 1664 rightCase.add(proposal); | |
| 1665 CharSequence newPostfix= insertion.subSequence(relativeCompletionOffset, insertion.length()); | |
| 1666 if (rightCasePostfix is null) | |
| 1667 rightCasePostfix= new StringBuffer(newPostfix.toString()); | |
| 1668 else | |
| 1669 truncatePostfix(rightCasePostfix, newPostfix); | |
| 1670 } else if (i is 0 || isWrongCaseMatch) { | |
| 1671 CharSequence newPrefix= insertion.subSequence(0, relativeCompletionOffset); | |
| 1672 if (isPrefixCompatible(wrongCasePrefix, wrongCasePrefixStart, newPrefix, start, document)) { | |
| 1673 isWrongCaseMatch= true; | |
| 1674 wrongCasePrefix= newPrefix; | |
| 1675 wrongCasePrefixStart= start; | |
| 1676 CharSequence newPostfix= insertion.subSequence(relativeCompletionOffset, insertion.length()); | |
| 1677 if (wrongCasePostfix is null) | |
| 1678 wrongCasePostfix= new StringBuffer(newPostfix.toString()); | |
| 1679 else | |
| 1680 truncatePostfix(wrongCasePostfix, newPostfix); | |
| 1681 wrongCase.add(proposal); | |
| 1682 } else { | |
| 1683 return false; | |
| 1684 } | |
| 1685 } else | |
| 1686 return false; | |
| 1687 } catch (BadLocationException e2) { | |
| 1688 // bail out silently | |
| 1689 return false; | |
| 1690 } | |
| 1691 | |
| 1692 if (rightCasePostfix !is null && rightCasePostfix.length() is 0 && rightCase.size() > 1) | |
| 1693 return false; | |
| 1694 } | |
| 1695 | |
| 1696 // 2: replace single proposals | |
| 1697 | |
| 1698 if (rightCase.size() is 1) { | |
| 134 | 1699 ICompletionProposal proposal= cast(ICompletionProposal) rightCase.get(0); |
| 129 | 1700 if (canAutoInsert(proposal) && rightCasePostfix.length() > 0) { |
| 134 | 1701 insertProposal(proposal, cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 1702 hide(); |
| 1703 return true; | |
| 1704 } | |
| 1705 return false; | |
| 1706 } else if (isWrongCaseMatch && wrongCase.size() is 1) { | |
| 134 | 1707 ICompletionProposal proposal= cast(ICompletionProposal) wrongCase.get(0); |
| 129 | 1708 if (canAutoInsert(proposal)) { |
| 134 | 1709 insertProposal(proposal, cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 1710 hide(); |
| 1711 return true; | |
| 1712 } | |
| 1713 return false; | |
| 1714 } | |
| 1715 | |
| 1716 // 3: replace post- / prefixes | |
| 1717 | |
| 1718 CharSequence prefix; | |
| 1719 if (isWrongCaseMatch) | |
| 1720 prefix= wrongCasePrefix; | |
| 1721 else | |
| 1722 prefix= ""; //$NON-NLS-1$ | |
| 1723 | |
| 1724 CharSequence postfix; | |
| 1725 if (isWrongCaseMatch) | |
| 1726 postfix= wrongCasePostfix; | |
| 1727 else | |
| 1728 postfix= rightCasePostfix; | |
| 1729 | |
| 1730 if (prefix is null || postfix is null) | |
| 1731 return false; | |
| 1732 | |
| 1733 try { | |
| 1734 // 4: check if parts of the postfix are already in the document | |
| 1735 int to= Math.min(document.getLength(), fFilterOffset + postfix.length()); | |
| 1736 StringBuffer inDocument= new StringBuffer(document.get(fFilterOffset, to - fFilterOffset)); | |
| 1737 truncatePostfix(inDocument, postfix); | |
| 1738 | |
| 1739 // 5: replace and reveal | |
| 1740 document.replace(fFilterOffset - prefix.length(), prefix.length() + inDocument.length(), prefix.toString() + postfix.toString()); | |
| 1741 | |
| 1742 fContentAssistSubjectControlAdapter.setSelectedRange(fFilterOffset + postfix.length(), 0); | |
| 1743 fContentAssistSubjectControlAdapter.revealRange(fFilterOffset + postfix.length(), 0); | |
| 1744 fFilterOffset+= postfix.length(); | |
| 1745 fLastCompletionOffset= fFilterOffset; | |
| 1746 | |
| 1747 return false; | |
| 1748 } catch (BadLocationException e) { | |
| 1749 // ignore and return false | |
| 1750 return false; | |
| 1751 } | |
| 1752 } | |
| 1753 | |
| 1754 /* | |
| 1755 * @since 3.1 | |
| 1756 */ | |
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1757 private bool isPrefixCompatible(CharSequence oneSequence, int oneOffset, CharSequence twoSequence, int twoOffset, IDocument document) { |
| 129 | 1758 if (oneSequence is null || twoSequence is null) |
| 1759 return true; | |
| 1760 | |
| 1761 int min= Math.min(oneOffset, twoOffset); | |
| 1762 int oneEnd= oneOffset + oneSequence.length(); | |
| 1763 int twoEnd= twoOffset + twoSequence.length(); | |
| 1764 | |
| 1765 String one= document.get(oneOffset, min - oneOffset) + oneSequence + document.get(oneEnd, Math.min(fFilterOffset, fFilterOffset - oneEnd)); | |
| 1766 String two= document.get(twoOffset, min - twoOffset) + twoSequence + document.get(twoEnd, Math.min(fFilterOffset, fFilterOffset - twoEnd)); | |
| 1767 | |
| 1768 return one.equals(two); | |
| 1769 } | |
| 1770 | |
| 1771 /** | |
| 1772 * Truncates <code>buffer</code> to the common prefix of <code>buffer</code> | |
| 1773 * and <code>sequence</code>. | |
| 1774 * | |
| 1775 * @param buffer the common postfix to truncate | |
| 1776 * @param sequence the characters to truncate with | |
| 1777 */ | |
| 1778 private void truncatePostfix(StringBuffer buffer, CharSequence sequence) { | |
| 1779 // find common prefix | |
| 1780 int min= Math.min(buffer.length(), sequence.length()); | |
| 1781 for (int c= 0; c < min; c++) { | |
| 1782 if (sequence.charAt(c) !is buffer.charAt(c)) { | |
|
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1783 buffer.delete_(c, buffer.length()); |
| 129 | 1784 return; |
| 1785 } | |
| 1786 } | |
| 1787 | |
| 1788 // all equal up to minimum | |
|
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1789 buffer.delete_(min, buffer.length()); |
| 129 | 1790 } |
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1791 |
| 129 | 1792 /** |
| 1793 * Sets the message for the repetition affordance text at the bottom of the proposal. Only has | |
| 1794 * an effect if {@link ContentAssistant#isRepeatedInvocationMode()} returns <code>true</code>. | |
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1795 * |
| 129 | 1796 * @param message the new caption |
| 1797 * @since 3.2 | |
| 1798 */ | |
| 1799 void setMessage(String message) { | |
| 1800 Assert.isNotNull(message); | |
| 1801 if (isActive() && fMessageText !is null) | |
| 1802 fMessageText.setText(message + " "); //$NON-NLS-1$ | |
| 1803 } | |
| 1804 | |
| 1805 /** | |
| 1806 * Sets the text to be displayed if no proposals are available. Only has an effect if | |
| 1807 * {@link ContentAssistant#isShowEmptyList()} returns <code>true</code>. | |
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1808 * |
| 129 | 1809 * @param message the empty message |
| 1810 * @since 3.2 | |
| 1811 */ | |
| 1812 void setEmptyMessage(String message) { | |
| 1813 Assert.isNotNull(message); | |
| 1814 fEmptyMessage= message; | |
| 1815 } | |
| 1816 | |
| 1817 /** | |
| 1818 * Enables or disables showing of the caption line. See also {@link #setMessage(String)}. | |
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1819 * |
| 129 | 1820 * @param show |
| 1821 * @since 3.2 | |
| 1822 */ | |
| 1823 public void setStatusLineVisible(bool show) { | |
| 1824 if (!isActive() || show is (fMessageText !is null)) | |
| 1825 return; // nothing to do | |
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1826 |
| 129 | 1827 if (show) { |
| 1828 createMessageText(); | |
| 1829 } else { | |
| 1830 fMessageText.dispose(); | |
| 1831 fMessageText= null; | |
| 1832 } | |
| 1833 fProposalShell.layout(); | |
| 1834 } | |
| 1835 | |
| 1836 /** | |
| 1837 * Informs the popup that it is being placed above the caret line instead of below. | |
|
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1838 * |
| 129 | 1839 * @param above <code>true</code> if the location of the popup is above the caret line, <code>false</code> if it is below |
| 1840 * @since 3.3 | |
| 1841 */ | |
| 1842 void switchedPositionToAbove(bool above) { | |
| 1843 if (fAdditionalInfoController !is null) { | |
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1844 fAdditionalInfoController.setFallbackAnchors([ |
| 129 | 1845 AbstractInformationControlManager.ANCHOR_RIGHT, |
| 1846 AbstractInformationControlManager.ANCHOR_LEFT, | |
| 1847 above ? AbstractInformationControlManager.ANCHOR_TOP : AbstractInformationControlManager.ANCHOR_BOTTOM | |
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1848 ]); |
| 129 | 1849 } |
| 1850 } | |
| 1851 | |
| 1852 /** | |
| 1853 * Returns a new proposal selection handler. | |
|
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1854 * |
| 129 | 1855 * @param operationCode the operation code |
| 1856 * @return the handler | |
| 1857 * @since 3.4 | |
| 1858 */ | |
| 1859 IHandler createProposalSelectionHandler(int operationCode) { | |
| 1860 return new ProposalSelectionHandler(operationCode); | |
| 1861 } | |
| 1862 | |
| 1863 } |