Mercurial > projects > dwt-addons
annotate dwtx/jface/text/contentassist/CompletionProposalPopup.d @ 147:000f9136b8f7
final
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 24 Aug 2008 22:35:05 +0200 |
| parents | 75302ef3f92f |
| children | f70d9508c95c |
| 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 | |
| 51 import java.util.ArrayList; | |
| 52 import java.util.List; | |
| 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; | |
| 114 import dwtx.jface.text.AbstractInformationControlManager.Anchor; | |
| 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 */ | |
| 501 public String showProposals(final bool autoActivated) { | |
| 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 | |
| 135 | 513 BusyIndicator.showWhile(control.getDisplay(), new class() Runnable { |
| 129 | 514 public void run() { |
| 515 | |
| 516 fInvocationOffset= fContentAssistSubjectControlAdapter.getSelectedRange().x; | |
| 517 fFilterOffset= fInvocationOffset; | |
| 518 fLastCompletionOffset= fFilterOffset; | |
| 519 fComputedProposals= computeProposals(fInvocationOffset); | |
| 520 | |
| 521 int count= (fComputedProposals is null ? 0 : fComputedProposals.length); | |
| 522 if (count is 0 && hideWhenNoProposals(autoActivated)) | |
| 523 return; | |
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524 |
| 129 | 525 if (count is 1 && !autoActivated && canAutoInsert(fComputedProposals[0])) { |
| 134 | 526 insertProposal(fComputedProposals[0], cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 527 hide(); |
| 528 } else { | |
| 529 createProposalSelector(); | |
| 530 setProposals(fComputedProposals, false); | |
| 531 displayProposals(); | |
| 532 } | |
| 533 } | |
| 534 }); | |
| 535 } else { | |
| 536 fLastCompletionOffset= fFilterOffset; | |
| 537 handleRepeatedInvocation(); | |
| 538 } | |
| 539 | |
| 540 return getErrorMessage(); | |
| 541 } | |
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542 |
| 129 | 543 /** |
| 544 * Hides the popup and returns <code>true</code> if the popup is configured | |
| 545 * to never display an empty list. Returns <code>false</code> otherwise. | |
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546 * |
| 129 | 547 * @param autoActivated whether the invocation was auto-activated |
| 548 * @return <code>false</code> if an empty list should be displayed, <code>true</code> otherwise | |
| 549 * @since 3.2 | |
| 550 */ | |
| 551 private bool hideWhenNoProposals(bool autoActivated) { | |
| 552 if (autoActivated || !fContentAssistant.isShowEmptyList()) { | |
| 553 if (!autoActivated) { | |
| 554 Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 555 if (control !is null && !control.isDisposed()) | |
| 556 control.getDisplay().beep(); | |
| 557 } | |
| 558 hide(); | |
| 559 return true; | |
| 560 } | |
| 561 return false; | |
| 562 } | |
| 563 | |
| 564 /** | |
| 565 * If content assist is set up to handle cycling, then the proposals are recomputed. Otherwise, | |
| 566 * nothing happens. | |
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567 * |
| 129 | 568 * @since 3.2 |
| 569 */ | |
| 570 private void handleRepeatedInvocation() { | |
| 571 if (fContentAssistant.isRepeatedInvocationMode()) { | |
| 572 fComputedProposals= computeProposals(fFilterOffset); | |
| 573 setProposals(fComputedProposals, false); | |
| 574 } | |
| 575 } | |
| 576 | |
| 577 /** | |
| 578 * Returns the completion proposal available at the given offset of the | |
| 579 * viewer's document. Delegates the work to the content assistant. | |
| 580 * | |
| 581 * @param offset the offset | |
| 582 * @return the completion proposals available at this offset | |
| 583 */ | |
| 584 private ICompletionProposal[] computeProposals(int offset) { | |
| 585 if (fContentAssistSubjectControl !is null) | |
| 586 return fContentAssistant.computeCompletionProposals(fContentAssistSubjectControl, offset); | |
| 587 return fContentAssistant.computeCompletionProposals(fViewer, offset); | |
| 588 } | |
| 589 | |
| 590 /** | |
| 591 * Returns the error message. | |
| 592 * | |
| 593 * @return the error message | |
| 594 */ | |
| 595 private String getErrorMessage() { | |
| 596 return fContentAssistant.getErrorMessage(); | |
| 597 } | |
| 598 | |
| 599 /** | |
| 600 * Creates the proposal selector. | |
| 601 */ | |
| 602 private void createProposalSelector() { | |
| 603 if (Helper.okToUse(fProposalShell)) | |
| 604 return; | |
| 605 | |
| 606 Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 607 fProposalShell= new Shell(control.getShell(), DWT.ON_TOP | DWT.RESIZE ); | |
| 608 fProposalShell.setFont(JFaceResources.getDefaultFont()); | |
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609 if (USE_VIRTUAL) { |
| 129 | 610 fProposalTable= new Table(fProposalShell, DWT.H_SCROLL | DWT.V_SCROLL | DWT.VIRTUAL); |
| 611 | |
| 135 | 612 Listener listener= new class() Listener { |
| 129 | 613 public void handleEvent(Event event) { |
| 614 handleSetData(event); | |
| 615 } | |
| 616 }; | |
| 617 fProposalTable.addListener(DWT.SetData, listener); | |
| 618 } else { | |
| 619 fProposalTable= new Table(fProposalShell, DWT.H_SCROLL | DWT.V_SCROLL); | |
| 620 } | |
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621 |
| 129 | 622 fIsColoredLabelsSupportEnabled= fContentAssistant.isColoredLabelsSupportEnabled(); |
| 623 if (fIsColoredLabelsSupportEnabled) | |
| 624 TableOwnerDrawSupport.install(fProposalTable); | |
| 625 | |
| 626 fProposalTable.setLocation(0, 0); | |
| 627 if (fAdditionalInfoController !is null) | |
| 628 fAdditionalInfoController.setSizeConstraints(50, 10, true, true); | |
| 629 | |
| 630 GridLayout layout= new GridLayout(); | |
| 631 layout.marginWidth= 0; | |
| 632 layout.marginHeight= 0; | |
| 633 layout.verticalSpacing= 1; | |
| 634 fProposalShell.setLayout(layout); | |
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635 |
| 129 | 636 if (fContentAssistant.isStatusLineVisible()) { |
| 637 createMessageText(); | |
| 638 } | |
| 639 | |
| 640 GridData data= new GridData(GridData.FILL_BOTH); | |
| 641 | |
| 642 Point size= fContentAssistant.restoreCompletionProposalPopupSize(); | |
| 643 if (size !is null) { | |
| 644 fProposalTable.setLayoutData(data); | |
| 645 fProposalShell.setSize(size); | |
| 646 } else { | |
| 647 int height= fProposalTable.getItemHeight() * 10; | |
| 648 // use golden ratio as default aspect ratio | |
| 649 final double aspectRatio= (1 + Math.sqrt(5)) / 2; | |
| 134 | 650 int width= cast(int) (height * aspectRatio); |
| 129 | 651 Rectangle trim= fProposalTable.computeTrim(0, 0, width, height); |
| 652 data.heightHint= trim.height; | |
| 653 data.widthHint= trim.width; | |
| 654 fProposalTable.setLayoutData(data); | |
| 655 fProposalShell.pack(); | |
| 656 } | |
| 657 fContentAssistant.addToLayout(this, fProposalShell, ContentAssistant.LayoutManager.LAYOUT_PROPOSAL_SELECTOR, fContentAssistant.getSelectionOffset()); | |
| 658 | |
| 135 | 659 fProposalShell.addControlListener(new class() ControlListener { |
| 129 | 660 |
| 661 public void controlMoved(ControlEvent e) {} | |
| 662 | |
| 663 public void controlResized(ControlEvent e) { | |
| 664 if (fAdditionalInfoController !is null) { | |
| 665 // reset the cached resize constraints | |
| 666 fAdditionalInfoController.setSizeConstraints(50, 10, true, false); | |
| 667 } | |
| 668 | |
| 669 fSize= fProposalShell.getSize(); | |
| 670 } | |
| 671 }); | |
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672 |
| 129 | 673 fProposalShell.setBackground(control.getDisplay().getSystemColor(DWT.COLOR_GRAY)); |
| 674 | |
| 675 Color c= getBackgroundColor(control); | |
| 676 fProposalTable.setBackground(c); | |
| 677 | |
| 678 c= getForegroundColor(control); | |
| 679 fProposalTable.setForeground(c); | |
| 680 | |
| 135 | 681 fProposalTable.addSelectionListener(new class() SelectionListener { |
| 129 | 682 |
| 683 public void widgetSelected(SelectionEvent e) {} | |
| 684 | |
| 685 public void widgetDefaultSelected(SelectionEvent e) { | |
| 686 insertSelectedProposalWithMask(e.stateMask); | |
| 687 } | |
| 688 }); | |
| 689 | |
| 690 fPopupCloser.install(fContentAssistant, fProposalTable, fAdditionalInfoController); | |
| 691 | |
| 135 | 692 fProposalShell.addDisposeListener(new class() DisposeListener { |
| 129 | 693 public void widgetDisposed(DisposeEvent e) { |
| 694 unregister(); // but don't dispose the shell, since we're being called from its disposal event! | |
| 695 } | |
| 696 }); | |
| 697 | |
| 698 fProposalTable.setHeaderVisible(false); | |
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699 |
| 129 | 700 addCommandSupport(fProposalTable); |
| 701 } | |
| 702 | |
| 703 /** | |
| 704 * Returns the minimal required height for the proposal, may return 0 if the popup has not been | |
| 705 * created yet. | |
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706 * |
| 129 | 707 * @return the minimal height |
| 708 * @since 3.3 | |
| 709 */ | |
| 710 int getMinimalHeight() { | |
| 711 int height= 0; | |
| 712 if (Helper.okToUse(fProposalTable)) { | |
| 713 int items= fProposalTable.getItemHeight() * 10; | |
| 714 Rectangle trim= fProposalTable.computeTrim(0, 0, DWT.DEFAULT, items); | |
| 715 height= trim.height; | |
| 716 } | |
| 717 if (Helper.okToUse(fMessageText)) | |
| 718 height+= fMessageText.getSize().y + 1; | |
| 719 return height; | |
| 720 } | |
| 721 | |
| 722 /** | |
| 723 * Adds command support to the given control. | |
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724 * |
| 129 | 725 * @param control the control to watch for focus |
| 726 * @since 3.2 | |
| 727 */ | |
| 728 private void addCommandSupport(final Control control) { | |
| 729 final KeySequence commandSequence= fContentAssistant.getRepeatedInvocationKeySequence(); | |
| 730 if (commandSequence !is null && !commandSequence.isEmpty() && fContentAssistant.isRepeatedInvocationMode()) { | |
| 135 | 731 control.addFocusListener(new class() FocusListener { |
| 129 | 732 private CommandKeyListener fCommandKeyListener; |
| 733 public void focusGained(FocusEvent e) { | |
| 734 if (Helper.okToUse(control)) { | |
| 735 if (fCommandKeyListener is null) { | |
| 736 fCommandKeyListener= new CommandKeyListener(commandSequence); | |
| 737 fProposalTable.addKeyListener(fCommandKeyListener); | |
| 738 } | |
| 739 } | |
| 740 } | |
| 741 public void focusLost(FocusEvent e) { | |
| 742 if (fCommandKeyListener !is null) { | |
| 743 control.removeKeyListener(fCommandKeyListener); | |
| 744 fCommandKeyListener= null; | |
| 745 } | |
| 746 } | |
| 747 }); | |
| 748 } | |
| 135 | 749 control.addFocusListener(new class() FocusListener { |
| 129 | 750 private TraverseListener fTraverseListener; |
| 751 public void focusGained(FocusEvent e) { | |
| 752 if (Helper.okToUse(control)) { | |
| 753 if (fTraverseListener is null) { | |
| 135 | 754 fTraverseListener= new class() TraverseListener { |
| 129 | 755 public void keyTraversed(TraverseEvent event) { |
| 756 if (event.detail is DWT.TRAVERSE_TAB_NEXT) { | |
| 757 IInformationControl iControl= fAdditionalInfoController.getCurrentInformationControl2(); | |
| 758 if (fAdditionalInfoController.getInternalAccessor().canReplace(iControl)) { | |
| 759 fAdditionalInfoController.getInternalAccessor().replaceInformationControl(true); | |
| 760 event.doit= false; | |
| 761 } | |
| 762 } | |
| 763 } | |
| 764 }; | |
| 765 fProposalTable.addTraverseListener(fTraverseListener); | |
| 766 } | |
| 767 } | |
| 768 } | |
| 769 public void focusLost(FocusEvent e) { | |
| 770 if (fTraverseListener !is null) { | |
| 771 control.removeTraverseListener(fTraverseListener); | |
| 772 fTraverseListener= null; | |
| 773 } | |
| 774 } | |
| 775 }); | |
| 776 } | |
| 777 | |
| 778 /** | |
| 779 * Returns the background color to use. | |
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780 * |
| 129 | 781 * @param control the control to get the display from |
| 782 * @return the background color | |
| 783 * @since 3.2 | |
| 784 */ | |
| 785 private Color getBackgroundColor(Control control) { | |
| 786 Color c= fContentAssistant.getProposalSelectorBackground(); | |
| 787 if (c is null) | |
| 788 c= JFaceResources.getColorRegistry().get(JFacePreferences.CONTENT_ASSIST_BACKGROUND_COLOR); | |
| 789 return c; | |
| 790 } | |
| 791 | |
| 792 /** | |
| 793 * Returns the foreground color to use. | |
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794 * |
| 129 | 795 * @param control the control to get the display from |
| 796 * @return the foreground color | |
| 797 * @since 3.2 | |
| 798 */ | |
| 799 private Color getForegroundColor(Control control) { | |
| 800 Color c= fContentAssistant.getProposalSelectorForeground(); | |
| 801 if (c is null) | |
| 802 c= JFaceResources.getColorRegistry().get(JFacePreferences.CONTENT_ASSIST_FOREGROUND_COLOR); | |
| 803 return c; | |
| 804 } | |
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805 |
| 129 | 806 /** |
| 807 * Creates the caption line under the proposal table. | |
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808 * |
| 129 | 809 * @since 3.2 |
| 810 */ | |
| 811 private void createMessageText() { | |
| 812 if (fMessageText is null) { | |
| 813 fMessageText= new Label(fProposalShell, DWT.RIGHT); | |
| 814 GridData textData= new GridData(DWT.FILL, DWT.BOTTOM, true, false); | |
| 815 fMessageText.setLayoutData(textData); | |
| 816 fMessageText.setText(fContentAssistant.getStatusMessage() + " "); //$NON-NLS-1$ | |
| 817 if (fMessageTextFont is null) { | |
| 818 Font font= fMessageText.getFont(); | |
| 819 Display display= fProposalShell.getDisplay(); | |
| 820 FontData[] fontDatas= font.getFontData(); | |
| 821 for (int i= 0; i < fontDatas.length; i++) | |
| 822 fontDatas[i].setHeight(fontDatas[i].getHeight() * 9 / 10); | |
| 823 fMessageTextFont= new Font(display, fontDatas); | |
| 824 } | |
| 825 fMessageText.setFont(fMessageTextFont); | |
| 826 fMessageText.setBackground(getBackgroundColor(fProposalShell)); | |
| 827 fMessageText.setForeground(getForegroundColor(fProposalShell)); | |
| 828 | |
| 829 if (fContentAssistant.isRepeatedInvocationMode()) { | |
| 830 fMessageText.setCursor(fProposalShell.getDisplay().getSystemCursor(DWT.CURSOR_HAND)); | |
| 135 | 831 fMessageText.addMouseListener(new class() MouseAdapter { |
| 129 | 832 public void mouseUp(MouseEvent e) { |
| 833 fLastCompletionOffset= fFilterOffset; | |
| 834 fProposalTable.setFocus(); | |
| 835 handleRepeatedInvocation(); | |
| 836 } | |
| 837 | |
| 838 public void mouseDown(MouseEvent e) { | |
| 839 } | |
| 840 }); | |
| 841 } | |
| 842 } | |
| 843 } | |
| 844 | |
| 845 /* | |
| 846 * @since 3.1 | |
| 847 */ | |
| 848 private void handleSetData(Event event) { | |
| 134 | 849 TableItem item= cast(TableItem) event.item; |
| 129 | 850 int index= fProposalTable.indexOf(item); |
| 851 | |
| 852 if (0 <= index && index < fFilteredProposals.length) { | |
| 853 ICompletionProposal current= fFilteredProposals[index]; | |
| 854 | |
| 855 String displayString; | |
| 856 StyleRange[] styleRanges= null; | |
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857 if (fIsColoredLabelsSupportEnabled && cast(ICompletionProposalExtension6)current ) { |
| 134 | 858 StyledString styledString= (cast(ICompletionProposalExtension6)current).getStyledDisplayString(); |
| 129 | 859 displayString= styledString.getString(); |
| 860 styleRanges= styledString.getStyleRanges(); | |
| 861 } else | |
| 862 displayString= current.getDisplayString(); | |
| 863 | |
| 864 item.setText(displayString); | |
| 865 if (fIsColoredLabelsSupportEnabled) | |
| 866 TableOwnerDrawSupport.storeStyleRanges(item, 0, styleRanges); | |
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867 |
| 129 | 868 item.setImage(current.getImage()); |
| 869 item.setData(current); | |
| 870 } else { | |
| 871 // this should not happen, but does on win32 | |
| 872 } | |
| 873 } | |
| 874 | |
| 875 /** | |
| 876 * Returns the proposal selected in the proposal selector. | |
| 877 * | |
| 878 * @return the selected proposal | |
| 879 * @since 2.0 | |
| 880 */ | |
| 881 private ICompletionProposal getSelectedProposal() { | |
| 882 /* Make sure that there is no filter runnable pending. | |
| 883 * See https://bugs.eclipse.org/bugs/show_bug.cgi?id=31427 | |
| 884 */ | |
| 885 if (fIsFilterPending) | |
| 886 fFilterRunnable.run(); | |
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887 |
| 129 | 888 // filter runnable may have hidden the proposals |
| 889 if (!Helper.okToUse(fProposalTable)) | |
| 890 return null; | |
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891 |
| 129 | 892 int i= fProposalTable.getSelectionIndex(); |
| 893 if (fFilteredProposals is null || i < 0 || i >= fFilteredProposals.length) | |
| 894 return null; | |
| 895 return fFilteredProposals[i]; | |
| 896 } | |
| 897 | |
| 898 /** | |
| 899 * Takes the selected proposal and applies it. | |
| 900 * | |
| 901 * @param stateMask the state mask | |
| 902 * @since 3.2 | |
| 903 */ | |
| 904 private void insertSelectedProposalWithMask(int stateMask) { | |
| 905 ICompletionProposal p= getSelectedProposal(); | |
| 906 hide(); | |
| 907 if (p !is null) | |
| 134 | 908 insertProposal(p, cast(wchar) 0, stateMask, fContentAssistSubjectControlAdapter.getSelectedRange().x); |
| 129 | 909 } |
| 910 | |
| 911 /** | |
| 912 * Applies the given proposal at the given offset. The given character is the | |
| 913 * one that triggered the insertion of this proposal. | |
| 914 * | |
| 915 * @param p the completion proposal | |
| 916 * @param trigger the trigger character | |
| 917 * @param stateMask the state mask | |
| 918 * @param offset the offset | |
| 919 * @since 2.1 | |
| 920 */ | |
| 921 private void insertProposal(ICompletionProposal p, char trigger, int stateMask, final int offset) { | |
| 922 | |
| 923 fInserting= true; | |
| 924 IRewriteTarget target= null; | |
| 135 | 925 IEditingSupport helper= new class() IEditingSupport { |
| 129 | 926 |
| 927 public bool isOriginator(DocumentEvent event, IRegion focus) { | |
| 928 return focus.getOffset() <= offset && focus.getOffset() + focus.getLength() >= offset; | |
| 929 } | |
| 930 | |
| 931 public bool ownsFocusShell() { | |
| 932 return false; | |
| 933 } | |
| 934 | |
| 935 }; | |
| 936 | |
| 937 try { | |
| 938 | |
| 939 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 940 | |
| 138 | 941 if ( cast(ITextViewerExtension)fViewer ) { |
| 134 | 942 ITextViewerExtension extension= cast(ITextViewerExtension) fViewer; |
| 129 | 943 target= extension.getRewriteTarget(); |
| 944 } | |
| 945 | |
| 946 if (target !is null) | |
| 947 target.beginCompoundChange(); | |
| 948 | |
| 138 | 949 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 950 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 951 registry.register(helper); |
| 952 } | |
| 953 | |
| 954 | |
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955 if (cast(ICompletionProposalExtension2)p && fViewer !is null) { |
| 134 | 956 ICompletionProposalExtension2 e= cast(ICompletionProposalExtension2) p; |
| 129 | 957 e.apply(fViewer, trigger, stateMask, offset); |
| 138 | 958 } else if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 959 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p; |
| 129 | 960 e.apply(document, trigger, offset); |
| 961 } else { | |
| 962 p.apply(document); | |
| 963 } | |
| 964 | |
| 965 Point selection= p.getSelection(document); | |
| 966 if (selection !is null) { | |
| 967 fContentAssistSubjectControlAdapter.setSelectedRange(selection.x, selection.y); | |
| 968 fContentAssistSubjectControlAdapter.revealRange(selection.x, selection.y); | |
| 969 } | |
| 970 | |
| 971 IContextInformation info= p.getContextInformation(); | |
| 972 if (info !is null) { | |
| 973 | |
| 974 int contextInformationOffset; | |
| 138 | 975 if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 976 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p; |
| 129 | 977 contextInformationOffset= e.getContextInformationPosition(); |
| 978 } else { | |
| 979 if (selection is null) | |
| 980 selection= fContentAssistSubjectControlAdapter.getSelectedRange(); | |
| 981 contextInformationOffset= selection.x + selection.y; | |
| 982 } | |
| 983 | |
| 984 fContentAssistant.showContextInformation(info, contextInformationOffset); | |
| 985 } else | |
| 986 fContentAssistant.showContextInformation(null, -1); | |
| 987 | |
| 988 | |
| 989 } finally { | |
| 990 if (target !is null) | |
| 991 target.endCompoundChange(); | |
| 992 | |
| 138 | 993 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 994 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 995 registry.unregister(helper); |
| 996 } | |
| 997 fInserting= false; | |
| 998 } | |
| 999 } | |
| 1000 | |
| 1001 /** | |
| 1002 * Returns whether this popup has the focus. | |
| 1003 * | |
| 1004 * @return <code>true</code> if the popup has the focus | |
| 1005 */ | |
| 1006 public bool hasFocus() { | |
| 1007 if (Helper.okToUse(fProposalShell)) { | |
| 1008 if ((fProposalShell.isFocusControl() || fProposalTable.isFocusControl())) | |
| 1009 return true; | |
| 1010 /* | |
| 1011 * We have to delegate this query to the additional info controller | |
| 1012 * as well, since the content assistant is the widget token owner | |
| 1013 * and its closer does not know that the additional info control can | |
| 1014 * now also take focus. | |
| 1015 */ | |
| 1016 if (fAdditionalInfoController !is null) { | |
| 1017 IInformationControl informationControl= fAdditionalInfoController.getCurrentInformationControl2(); | |
| 1018 if (informationControl !is null && informationControl.isFocusControl()) | |
| 1019 return true; | |
| 1020 InformationControlReplacer replacer= fAdditionalInfoController.getInternalAccessor().getInformationControlReplacer(); | |
| 1021 if (replacer !is null) { | |
| 1022 informationControl= replacer.getCurrentInformationControl2(); | |
| 1023 if (informationControl !is null && informationControl.isFocusControl()) | |
| 1024 return true; | |
| 1025 } | |
| 1026 } | |
| 1027 } | |
| 1028 | |
| 1029 return false; | |
| 1030 } | |
| 1031 | |
| 1032 /** | |
| 1033 * Hides this popup. | |
| 1034 */ | |
| 1035 public void hide() { | |
| 1036 | |
| 1037 unregister(); | |
| 1038 | |
| 138 | 1039 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 1040 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 1041 registry.unregister(fFocusHelper); |
| 1042 } | |
| 1043 | |
| 1044 if (Helper.okToUse(fProposalShell)) { | |
| 1045 | |
| 1046 fContentAssistant.removeContentAssistListener(this, ContentAssistant.PROPOSAL_SELECTOR); | |
| 1047 | |
| 1048 fPopupCloser.uninstall(); | |
| 1049 fProposalShell.setVisible(false); | |
| 1050 fProposalShell.dispose(); | |
| 1051 fProposalShell= null; | |
| 1052 } | |
|
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1053 |
| 129 | 1054 if (fMessageTextFont !is null) { |
| 1055 fMessageTextFont.dispose(); | |
| 1056 fMessageTextFont= null; | |
| 1057 } | |
|
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1058 |
| 129 | 1059 if (fMessageText !is null) { |
| 1060 fMessageText= null; | |
| 1061 } | |
|
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1062 |
| 129 | 1063 fEmptyMessage= null; |
|
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1064 |
| 129 | 1065 fLastCompletionOffset= -1; |
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1066 |
| 129 | 1067 fContentAssistant.fireSessionEndEvent(); |
| 1068 } | |
| 1069 | |
| 1070 /** | |
| 1071 * Unregister this completion proposal popup. | |
| 1072 * | |
| 1073 * @since 3.0 | |
| 1074 */ | |
| 1075 private void unregister() { | |
| 1076 if (fDocumentListener !is null) { | |
| 1077 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1078 if (document !is null) | |
| 1079 document.removeDocumentListener(fDocumentListener); | |
| 1080 fDocumentListener= null; | |
| 1081 } | |
| 1082 fDocumentEvents.clear(); | |
| 1083 | |
| 1084 if (fKeyListener !is null && fContentAssistSubjectControlAdapter.getControl() !is null && !fContentAssistSubjectControlAdapter.getControl().isDisposed()) { | |
| 1085 fContentAssistSubjectControlAdapter.removeKeyListener(fKeyListener); | |
| 1086 fKeyListener= null; | |
| 1087 } | |
| 1088 | |
| 1089 if (fLastProposal !is null) { | |
|
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1090 if (cast(ICompletionProposalExtension2)fLastProposal && fViewer !is null) { |
| 134 | 1091 ICompletionProposalExtension2 extension= cast(ICompletionProposalExtension2) fLastProposal; |
| 129 | 1092 extension.unselected(fViewer); |
| 1093 } | |
| 1094 fLastProposal= null; | |
| 1095 } | |
| 1096 | |
| 1097 fFilteredProposals= null; | |
| 1098 fComputedProposals= null; | |
| 1099 | |
| 1100 fContentAssistant.possibleCompletionsClosed(); | |
| 1101 } | |
| 1102 | |
| 1103 /** | |
| 1104 *Returns whether this popup is active. It is active if the proposal selector is visible. | |
| 1105 * | |
| 1106 * @return <code>true</code> if this popup is active | |
| 1107 */ | |
| 1108 public bool isActive() { | |
| 1109 return fProposalShell !is null && !fProposalShell.isDisposed(); | |
| 1110 } | |
| 1111 | |
| 1112 /** | |
| 1113 * Initializes the proposal selector with these given proposals. | |
| 1114 * @param proposals the proposals | |
| 1115 * @param isFilteredSubset if <code>true</code>, the proposal table is | |
| 1116 * not cleared, but the proposals that are not in the passed array | |
| 1117 * are removed from the displayed set | |
| 1118 */ | |
| 1119 private void setProposals(ICompletionProposal[] proposals, bool isFilteredSubset) { | |
| 1120 ICompletionProposal[] oldProposals= fFilteredProposals; | |
| 1121 ICompletionProposal oldProposal= getSelectedProposal(); // may trigger filtering and a reentrant call to setProposals() | |
| 1122 if (oldProposals !is fFilteredProposals) // reentrant call was first - abort | |
| 1123 return; | |
| 1124 | |
| 1125 if (Helper.okToUse(fProposalTable)) { | |
|
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1126 if (cast(ICompletionProposalExtension2)oldProposal && fViewer !is null) |
| 134 | 1127 (cast(ICompletionProposalExtension2) oldProposal).unselected(fViewer); |
|
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1128 |
| 129 | 1129 if (proposals is null || proposals.length is 0) { |
| 1130 fEmptyProposal.fOffset= fFilterOffset; | |
| 1131 fEmptyProposal.fDisplayString= fEmptyMessage !is null ? fEmptyMessage : JFaceTextMessages.getString("CompletionProposalPopup.no_proposals"); //$NON-NLS-1$ | |
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1132 proposals= [ fEmptyProposal ]; |
| 129 | 1133 } |
| 1134 | |
| 1135 fFilteredProposals= proposals; | |
| 1136 final int newLen= proposals.length; | |
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1137 if (USE_VIRTUAL) { |
| 129 | 1138 fProposalTable.setItemCount(newLen); |
| 1139 fProposalTable.clearAll(); | |
| 1140 } else { | |
| 1141 fProposalTable.setRedraw(false); | |
| 1142 fProposalTable.setItemCount(newLen); | |
| 1143 TableItem[] items= fProposalTable.getItems(); | |
| 1144 for (int i= 0; i < items.length; i++) { | |
| 1145 TableItem item= items[i]; | |
| 1146 ICompletionProposal proposal= proposals[i]; | |
| 1147 item.setText(proposal.getDisplayString()); | |
| 1148 item.setImage(proposal.getImage()); | |
| 1149 item.setData(proposal); | |
| 1150 } | |
| 1151 fProposalTable.setRedraw(true); | |
| 1152 } | |
| 1153 | |
| 1154 Point currentLocation= fProposalShell.getLocation(); | |
| 1155 Point newLocation= getLocation(); | |
| 1156 if ((newLocation.x < currentLocation.x && newLocation.y is currentLocation.y) || newLocation.y < currentLocation.y) | |
| 1157 fProposalShell.setLocation(newLocation); | |
| 1158 | |
| 1159 selectProposal(0, false); | |
| 1160 } | |
| 1161 } | |
| 1162 | |
| 1163 /** | |
| 1164 * Returns the graphical location at which this popup should be made visible. | |
| 1165 * | |
| 1166 * @return the location of this popup | |
| 1167 */ | |
| 1168 private Point getLocation() { | |
| 1169 int caret= fContentAssistSubjectControlAdapter.getCaretOffset(); | |
| 1170 Rectangle location= fContentAssistant.getLayoutManager().computeBoundsBelowAbove(fProposalShell, fSize is null ? fProposalShell.getSize() : fSize, caret, this); | |
| 1171 return Geometry.getLocation(location); | |
| 1172 } | |
| 1173 | |
| 1174 /** | |
| 1175 * Returns the size of this completion proposal popup. | |
| 1176 * | |
| 1177 * @return a Point containing the size | |
| 1178 * @since 3.0 | |
| 1179 */ | |
| 1180 Point getSize() { | |
| 1181 return fSize; | |
| 1182 } | |
| 1183 | |
| 1184 /** | |
| 1185 * Displays this popup and install the additional info controller, so that additional info | |
| 1186 * is displayed when a proposal is selected and additional info is available. | |
| 1187 */ | |
| 1188 private void displayProposals() { | |
| 1189 | |
| 1190 if (!Helper.okToUse(fProposalShell) || !Helper.okToUse(fProposalTable)) | |
| 1191 return; | |
| 1192 | |
| 1193 if (fContentAssistant.addContentAssistListener(this, ContentAssistant.PROPOSAL_SELECTOR)) { | |
| 1194 | |
| 1195 ensureDocumentListenerInstalled(); | |
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1196 |
| 129 | 1197 if (fFocusHelper is null) { |
| 135 | 1198 fFocusHelper= new class() IEditingSupport { |
| 129 | 1199 |
| 1200 public bool isOriginator(DocumentEvent event, IRegion focus) { | |
| 1201 return false; // this helper just covers the focus change to the proposal shell, no remote editions | |
| 1202 } | |
| 1203 | |
| 1204 public bool ownsFocusShell() { | |
| 1205 return true; | |
| 1206 } | |
| 1207 | |
| 1208 }; | |
| 1209 } | |
| 138 | 1210 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 1211 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 1212 registry.register(fFocusHelper); |
| 1213 } | |
| 1214 | |
| 1215 | |
| 1216 /* https://bugs.eclipse.org/bugs/show_bug.cgi?id=52646 | |
| 1217 * on GTK, setVisible and such may run the event loop | |
| 1218 * (see also https://bugs.eclipse.org/bugs/show_bug.cgi?id=47511) | |
| 1219 * Since the user may have already canceled the popup or selected | |
| 1220 * an entry (ESC or RETURN), we have to double check whether | |
| 1221 * the table is still okToUse. See comments below | |
| 1222 */ | |
| 1223 fProposalShell.setVisible(true); // may run event loop on GTK | |
| 1224 // transfer focus since no verify key listener can be attached | |
| 1225 if (!fContentAssistSubjectControlAdapter.supportsVerifyKeyListener() && Helper.okToUse(fProposalShell)) | |
| 1226 fProposalShell.setFocus(); // may run event loop on GTK ?? | |
| 1227 | |
| 1228 if (fAdditionalInfoController !is null && Helper.okToUse(fProposalTable)) { | |
| 1229 fAdditionalInfoController.install(fProposalTable); | |
| 1230 fAdditionalInfoController.handleTableSelectionChanged(); | |
| 1231 } | |
| 1232 } else | |
| 1233 hide(); | |
| 1234 } | |
| 1235 | |
| 1236 /** | |
| 1237 * Installs the document listener if not already done. | |
| 1238 * | |
| 1239 * @since 3.2 | |
| 1240 */ | |
| 1241 private void ensureDocumentListenerInstalled() { | |
| 1242 if (fDocumentListener is null) { | |
| 135 | 1243 fDocumentListener= new class() IDocumentListener { |
| 129 | 1244 public void documentAboutToBeChanged(DocumentEvent event) { |
| 1245 if (!fInserting) | |
| 1246 fDocumentEvents.add(event); | |
| 1247 } | |
| 1248 | |
| 1249 public void documentChanged(DocumentEvent event) { | |
| 1250 if (!fInserting) | |
| 1251 filterProposals(); | |
| 1252 } | |
| 1253 }; | |
| 1254 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1255 if (document !is null) | |
| 1256 document.addDocumentListener(fDocumentListener); | |
| 1257 } | |
| 1258 } | |
| 1259 | |
| 1260 /* | |
| 1261 * @see IContentAssistListener#verifyKey(VerifyEvent) | |
| 1262 */ | |
| 1263 public bool verifyKey(VerifyEvent e) { | |
| 1264 if (!Helper.okToUse(fProposalShell)) | |
| 1265 return true; | |
| 1266 | |
| 1267 char key= e.character; | |
| 1268 if (key is 0) { | |
| 1269 int newSelection= fProposalTable.getSelectionIndex(); | |
| 1270 int visibleRows= (fProposalTable.getSize().y / fProposalTable.getItemHeight()) - 1; | |
| 1271 int itemCount= fProposalTable.getItemCount(); | |
| 1272 bool smartToggle= false; | |
| 1273 switch (e.keyCode) { | |
| 1274 | |
| 1275 case DWT.ARROW_LEFT : | |
| 1276 case DWT.ARROW_RIGHT : | |
| 1277 filterProposals(); | |
| 1278 return true; | |
| 1279 | |
| 1280 case DWT.ARROW_UP : | |
| 1281 newSelection -= 1; | |
| 1282 if (newSelection < 0) | |
| 1283 newSelection= itemCount - 1; | |
| 1284 break; | |
| 1285 | |
| 1286 case DWT.ARROW_DOWN : | |
| 1287 newSelection += 1; | |
| 1288 if (newSelection > itemCount - 1) | |
| 1289 newSelection= 0; | |
| 1290 break; | |
| 1291 | |
| 1292 case DWT.PAGE_DOWN : | |
| 1293 newSelection += visibleRows; | |
| 1294 if (newSelection >= itemCount) | |
| 1295 newSelection= itemCount - 1; | |
| 1296 break; | |
| 1297 | |
| 1298 case DWT.PAGE_UP : | |
| 1299 newSelection -= visibleRows; | |
| 1300 if (newSelection < 0) | |
| 1301 newSelection= 0; | |
| 1302 break; | |
| 1303 | |
| 1304 case DWT.HOME : | |
| 1305 newSelection= 0; | |
| 1306 break; | |
| 1307 | |
| 1308 case DWT.END : | |
| 1309 newSelection= itemCount - 1; | |
| 1310 break; | |
| 1311 | |
| 1312 default : | |
| 1313 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) | |
| 1314 hide(); | |
| 1315 return true; | |
| 1316 } | |
| 1317 | |
| 1318 selectProposal(newSelection, smartToggle); | |
| 1319 | |
| 1320 e.doit= false; | |
| 1321 return false; | |
| 1322 | |
| 1323 } | |
| 1324 | |
| 1325 // key !is 0 | |
| 1326 switch (key) { | |
| 1327 case 0x1B: // Esc | |
| 1328 e.doit= false; | |
| 1329 hide(); | |
| 1330 break; | |
| 1331 | |
| 1332 case '\n': // Ctrl-Enter on w2k | |
| 1333 case '\r': // Enter | |
| 1334 e.doit= false; | |
| 1335 insertSelectedProposalWithMask(e.stateMask); | |
| 1336 break; | |
| 1337 | |
| 1338 case '\t': | |
| 1339 e.doit= false; | |
| 1340 fProposalShell.setFocus(); | |
| 1341 return false; | |
| 1342 | |
| 1343 default: | |
| 1344 ICompletionProposal p= getSelectedProposal(); | |
| 138 | 1345 if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 1346 ICompletionProposalExtension t= cast(ICompletionProposalExtension) p; |
| 129 | 1347 char[] triggers= t.getTriggerCharacters(); |
| 1348 if (contains(triggers, key)) { | |
| 1349 e.doit= false; | |
| 1350 hide(); | |
| 1351 insertProposal(p, key, e.stateMask, fContentAssistSubjectControlAdapter.getSelectedRange().x); | |
| 1352 } | |
| 1353 } | |
| 1354 } | |
| 1355 | |
| 1356 return true; | |
| 1357 } | |
| 1358 | |
| 1359 /** | |
| 1360 * Selects the entry with the given index in the proposal selector and feeds | |
| 1361 * the selection to the additional info controller. | |
| 1362 * | |
| 1363 * @param index the index in the list | |
| 1364 * @param smartToggle <code>true</code> if the smart toggle key has been pressed | |
| 1365 * @since 2.1 | |
| 1366 */ | |
| 1367 private void selectProposal(int index, bool smartToggle) { | |
| 1368 | |
| 1369 ICompletionProposal oldProposal= getSelectedProposal(); | |
|
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1370 if (cast(ICompletionProposalExtension2)oldProposal && fViewer !is null) |
| 134 | 1371 (cast(ICompletionProposalExtension2) oldProposal).unselected(fViewer); |
| 129 | 1372 |
| 1373 if (fFilteredProposals is null) { | |
| 1374 fireSelectionEvent(null, smartToggle); | |
| 1375 return; | |
| 1376 } | |
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1377 |
| 129 | 1378 ICompletionProposal proposal= fFilteredProposals[index]; |
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1379 if (cast(ICompletionProposalExtension2)proposal && fViewer !is null) |
| 134 | 1380 (cast(ICompletionProposalExtension2) proposal).selected(fViewer, smartToggle); |
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1381 |
| 129 | 1382 fireSelectionEvent(proposal, smartToggle); |
| 1383 | |
| 1384 fLastProposal= proposal; | |
| 1385 | |
| 1386 fProposalTable.setSelection(index); | |
| 1387 fProposalTable.showSelection(); | |
| 1388 if (fAdditionalInfoController !is null) | |
| 1389 fAdditionalInfoController.handleTableSelectionChanged(); | |
| 1390 } | |
| 1391 | |
| 1392 /** | |
| 1393 * Fires a selection event, see {@link ICompletionListener}. | |
|
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1394 * |
| 129 | 1395 * @param proposal the selected proposal, possibly <code>null</code> |
| 1396 * @param smartToggle true if the smart toggle is on | |
| 1397 * @since 3.2 | |
| 1398 */ | |
| 1399 private void fireSelectionEvent(ICompletionProposal proposal, bool smartToggle) { | |
| 1400 fContentAssistant.fireSelectionEvent(proposal, smartToggle); | |
| 1401 } | |
| 1402 | |
| 1403 /** | |
| 1404 * Returns whether the given character is contained in the given array of | |
| 1405 * characters. | |
| 1406 * | |
| 1407 * @param characters the list of characters | |
| 1408 * @param c the character to look for in the list | |
| 1409 * @return <code>true</code> if character belongs to the list | |
| 1410 * @since 2.0 | |
| 1411 */ | |
| 1412 private bool contains(char[] characters, char c) { | |
| 1413 | |
| 1414 if (characters is null) | |
| 1415 return false; | |
| 1416 | |
| 1417 for (int i= 0; i < characters.length; i++) { | |
| 1418 if (c is characters[i]) | |
| 1419 return true; | |
| 1420 } | |
| 1421 | |
| 1422 return false; | |
| 1423 } | |
| 1424 | |
| 1425 /* | |
| 1426 * @see IEventConsumer#processEvent(VerifyEvent) | |
| 1427 */ | |
| 1428 public void processEvent(VerifyEvent e) { | |
| 1429 } | |
| 1430 | |
| 1431 /** | |
| 1432 * Filters the displayed proposal based on the given cursor position and the | |
| 1433 * offset of the original invocation of the content assistant. | |
| 1434 */ | |
| 1435 private void filterProposals() { | |
| 1436 if (!fIsFilterPending) { | |
| 1437 fIsFilterPending= true; | |
| 1438 Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 1439 control.getDisplay().asyncExec(fFilterRunnable); | |
| 1440 } | |
| 1441 } | |
| 1442 | |
| 1443 /** | |
| 1444 * Computes the subset of already computed proposals that are still valid for | |
| 1445 * the given offset. | |
| 1446 * | |
| 1447 * @param offset the offset | |
| 1448 * @param event the merged document event | |
| 1449 * @return the set of filtered proposals | |
| 1450 * @since 3.0 | |
| 1451 */ | |
| 1452 private ICompletionProposal[] computeFilteredProposals(int offset, DocumentEvent event) { | |
| 1453 | |
| 1454 if (offset is fInvocationOffset && event is null) { | |
| 1455 fIsFilteredSubset= false; | |
| 1456 return fComputedProposals; | |
| 1457 } | |
| 1458 | |
| 1459 if (offset < fInvocationOffset) { | |
| 1460 fIsFilteredSubset= false; | |
| 1461 fInvocationOffset= offset; | |
| 1462 fContentAssistant.fireSessionRestartEvent(); | |
| 1463 fComputedProposals= computeProposals(fInvocationOffset); | |
| 1464 return fComputedProposals; | |
| 1465 } | |
| 1466 | |
| 1467 ICompletionProposal[] proposals; | |
| 1468 if (offset < fFilterOffset) { | |
| 1469 proposals= fComputedProposals; | |
| 1470 fIsFilteredSubset= false; | |
| 1471 } else { | |
| 1472 proposals= fFilteredProposals; | |
| 1473 fIsFilteredSubset= true; | |
| 1474 } | |
| 1475 | |
| 1476 if (proposals is null) { | |
| 1477 fIsFilteredSubset= false; | |
| 1478 return null; | |
| 1479 } | |
| 1480 | |
| 1481 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1482 int length= proposals.length; | |
| 1483 List filtered= new ArrayList(length); | |
| 1484 for (int i= 0; i < length; i++) { | |
| 1485 | |
|
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1486 if (cast(ICompletionProposalExtension2)proposals[i] ) { |
| 129 | 1487 |
| 134 | 1488 ICompletionProposalExtension2 p= cast(ICompletionProposalExtension2) proposals[i]; |
| 129 | 1489 if (p.validate(document, offset, event)) |
| 1490 filtered.add(p); | |
| 1491 | |
|
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1492 } else if (cast(ICompletionProposalExtension)proposals[i] ) { |
| 129 | 1493 |
| 134 | 1494 ICompletionProposalExtension p= cast(ICompletionProposalExtension) proposals[i]; |
| 129 | 1495 if (p.isValidFor(document, offset)) |
| 1496 filtered.add(p); | |
| 1497 | |
| 1498 } else { | |
| 1499 // restore original behavior | |
| 1500 fIsFilteredSubset= false; | |
| 1501 fInvocationOffset= offset; | |
| 1502 fContentAssistant.fireSessionRestartEvent(); | |
| 1503 fComputedProposals= computeProposals(fInvocationOffset); | |
| 1504 return fComputedProposals; | |
| 1505 } | |
| 1506 } | |
| 1507 | |
| 1508 return (ICompletionProposal[]) filtered.toArray(new ICompletionProposal[filtered.size()]); | |
| 1509 } | |
| 1510 | |
| 1511 /** | |
| 1512 * Requests the proposal shell to take focus. | |
| 1513 * | |
| 1514 * @since 3.0 | |
| 1515 */ | |
| 1516 public void setFocus() { | |
| 1517 if (Helper.okToUse(fProposalShell)) { | |
| 1518 fProposalShell.setFocus(); | |
| 1519 } | |
| 1520 } | |
|
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1521 |
| 129 | 1522 /** |
| 1523 * Returns <code>true</code> if <code>proposal</code> should be auto-inserted, | |
| 1524 * <code>false</code> otherwise. | |
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1525 * |
| 129 | 1526 * @param proposal the single proposal that might be automatically inserted |
| 1527 * @return <code>true</code> if <code>proposal</code> can be inserted automatically, | |
| 1528 * <code>false</code> otherwise | |
| 1529 * @since 3.1 | |
| 1530 */ | |
| 1531 private bool canAutoInsert(ICompletionProposal proposal) { | |
| 1532 if (fContentAssistant.isAutoInserting()) { | |
| 138 | 1533 if ( cast(ICompletionProposalExtension4)proposal ) { |
| 134 | 1534 ICompletionProposalExtension4 ext= cast(ICompletionProposalExtension4) proposal; |
| 129 | 1535 return ext.isAutoInsertable(); |
| 1536 } | |
| 1537 return true; // default behavior before ICompletionProposalExtension4 was introduced | |
| 1538 } | |
| 1539 return false; | |
| 1540 } | |
| 1541 | |
| 1542 /** | |
| 1543 * Completes the common prefix of all proposals directly in the code. If no | |
| 1544 * common prefix can be found, the proposal popup is shown. | |
| 1545 * | |
| 1546 * @return an error message if completion failed. | |
| 1547 * @since 3.0 | |
| 1548 */ | |
| 1549 public String incrementalComplete() { | |
| 1550 if (Helper.okToUse(fProposalShell) && fFilteredProposals !is null) { | |
| 1551 if (fLastCompletionOffset is fFilterOffset) { | |
| 1552 handleRepeatedInvocation(); | |
| 1553 } else { | |
| 1554 fLastCompletionOffset= fFilterOffset; | |
| 1555 completeCommonPrefix(); | |
| 1556 } | |
| 1557 } else { | |
| 1558 final Control control= fContentAssistSubjectControlAdapter.getControl(); | |
| 1559 | |
| 1560 if (fKeyListener is null) | |
| 1561 fKeyListener= new ProposalSelectionListener(); | |
| 1562 | |
| 1563 if (!Helper.okToUse(fProposalShell) && !control.isDisposed()) | |
| 1564 fContentAssistSubjectControlAdapter.addKeyListener(fKeyListener); | |
| 1565 | |
| 135 | 1566 BusyIndicator.showWhile(control.getDisplay(), new class() Runnable { |
| 129 | 1567 public void run() { |
| 1568 | |
| 1569 fInvocationOffset= fContentAssistSubjectControlAdapter.getSelectedRange().x; | |
| 1570 fFilterOffset= fInvocationOffset; | |
| 1571 fLastCompletionOffset= fFilterOffset; | |
| 1572 fFilteredProposals= computeProposals(fInvocationOffset); | |
| 1573 | |
| 1574 int count= (fFilteredProposals is null ? 0 : fFilteredProposals.length); | |
| 1575 if (count is 0 && hideWhenNoProposals(false)) | |
| 1576 return; | |
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1577 |
| 129 | 1578 if (count is 1 && canAutoInsert(fFilteredProposals[0])) { |
| 134 | 1579 insertProposal(fFilteredProposals[0], cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 1580 hide(); |
| 1581 } else { | |
| 1582 ensureDocumentListenerInstalled(); | |
| 1583 if (count > 0 && completeCommonPrefix()) | |
| 1584 hide(); | |
| 1585 else { | |
| 1586 fComputedProposals= fFilteredProposals; | |
| 1587 createProposalSelector(); | |
| 1588 setProposals(fComputedProposals, false); | |
| 1589 displayProposals(); | |
| 1590 } | |
| 1591 } | |
| 1592 } | |
| 1593 }); | |
| 1594 } | |
| 1595 return getErrorMessage(); | |
| 1596 } | |
| 1597 | |
| 1598 /** | |
| 1599 * Acts upon <code>fFilteredProposals</code>: if there is just one valid | |
| 1600 * proposal, it is inserted, otherwise, the common prefix of all proposals | |
| 1601 * is inserted into the document. If there is no common prefix, nothing | |
| 1602 * happens and <code>false</code> is returned. | |
|
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1603 * |
| 129 | 1604 * @return <code>true</code> if a single proposal was inserted and the |
| 1605 * selector can be closed, <code>false</code> otherwise | |
| 1606 * @since 3.0 | |
| 1607 */ | |
| 1608 private bool completeCommonPrefix() { | |
| 1609 | |
| 1610 // 0: insert single proposals | |
| 1611 if (fFilteredProposals.length is 1) { | |
| 1612 if (canAutoInsert(fFilteredProposals[0])) { | |
| 134 | 1613 insertProposal(fFilteredProposals[0], cast(wchar) 0, 0, fFilterOffset); |
| 129 | 1614 hide(); |
| 1615 return true; | |
| 1616 } | |
| 1617 return false; | |
| 1618 } | |
| 1619 | |
| 1620 // 1: extract pre- and postfix from all remaining proposals | |
| 1621 IDocument document= fContentAssistSubjectControlAdapter.getDocument(); | |
| 1622 | |
| 1623 // contains the common postfix in the case that there are any proposals matching our LHS | |
| 1624 StringBuffer rightCasePostfix= null; | |
| 1625 List rightCase= new ArrayList(); | |
| 1626 | |
| 1627 bool isWrongCaseMatch= false; | |
|
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1628 |
| 129 | 1629 // the prefix of all case insensitive matches. This differs from the document |
| 1630 // contents and will be replaced. | |
| 1631 CharSequence wrongCasePrefix= null; | |
| 1632 int wrongCasePrefixStart= 0; | |
| 1633 // contains the common postfix of all case-insensitive matches | |
| 1634 StringBuffer wrongCasePostfix= null; | |
| 1635 List wrongCase= new ArrayList(); | |
| 1636 | |
| 1637 for (int i= 0; i < fFilteredProposals.length; i++) { | |
| 1638 ICompletionProposal proposal= fFilteredProposals[i]; | |
|
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1639 |
| 138 | 1640 if (!( cast(ICompletionProposalExtension3)proposal )) |
| 129 | 1641 return false; |
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1642 |
| 134 | 1643 int start= (cast(ICompletionProposalExtension3)proposal).getPrefixCompletionStart(fContentAssistSubjectControlAdapter.getDocument(), fFilterOffset); |
| 1644 CharSequence insertion= (cast(ICompletionProposalExtension3)proposal).getPrefixCompletionText(fContentAssistSubjectControlAdapter.getDocument(), fFilterOffset); | |
| 129 | 1645 if (insertion is null) |
| 1646 insertion= proposal.getDisplayString(); | |
| 1647 try { | |
| 1648 int prefixLength= fFilterOffset - start; | |
| 1649 int relativeCompletionOffset= Math.min(insertion.length(), prefixLength); | |
| 1650 String prefix= document.get(start, prefixLength); | |
| 1651 if (!isWrongCaseMatch && insertion.toString().startsWith(prefix)) { | |
| 1652 isWrongCaseMatch= false; | |
| 1653 rightCase.add(proposal); | |
| 1654 CharSequence newPostfix= insertion.subSequence(relativeCompletionOffset, insertion.length()); | |
| 1655 if (rightCasePostfix is null) | |
| 1656 rightCasePostfix= new StringBuffer(newPostfix.toString()); | |
| 1657 else | |
| 1658 truncatePostfix(rightCasePostfix, newPostfix); | |
| 1659 } else if (i is 0 || isWrongCaseMatch) { | |
| 1660 CharSequence newPrefix= insertion.subSequence(0, relativeCompletionOffset); | |
| 1661 if (isPrefixCompatible(wrongCasePrefix, wrongCasePrefixStart, newPrefix, start, document)) { | |
| 1662 isWrongCaseMatch= true; | |
| 1663 wrongCasePrefix= newPrefix; | |
| 1664 wrongCasePrefixStart= start; | |
| 1665 CharSequence newPostfix= insertion.subSequence(relativeCompletionOffset, insertion.length()); | |
| 1666 if (wrongCasePostfix is null) | |
| 1667 wrongCasePostfix= new StringBuffer(newPostfix.toString()); | |
| 1668 else | |
| 1669 truncatePostfix(wrongCasePostfix, newPostfix); | |
| 1670 wrongCase.add(proposal); | |
| 1671 } else { | |
| 1672 return false; | |
| 1673 } | |
| 1674 } else | |
| 1675 return false; | |
| 1676 } catch (BadLocationException e2) { | |
| 1677 // bail out silently | |
| 1678 return false; | |
| 1679 } | |
| 1680 | |
| 1681 if (rightCasePostfix !is null && rightCasePostfix.length() is 0 && rightCase.size() > 1) | |
| 1682 return false; | |
| 1683 } | |
| 1684 | |
| 1685 // 2: replace single proposals | |
| 1686 | |
| 1687 if (rightCase.size() is 1) { | |
| 134 | 1688 ICompletionProposal proposal= cast(ICompletionProposal) rightCase.get(0); |
| 129 | 1689 if (canAutoInsert(proposal) && rightCasePostfix.length() > 0) { |
| 134 | 1690 insertProposal(proposal, cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 1691 hide(); |
| 1692 return true; | |
| 1693 } | |
| 1694 return false; | |
| 1695 } else if (isWrongCaseMatch && wrongCase.size() is 1) { | |
| 134 | 1696 ICompletionProposal proposal= cast(ICompletionProposal) wrongCase.get(0); |
| 129 | 1697 if (canAutoInsert(proposal)) { |
| 134 | 1698 insertProposal(proposal, cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 1699 hide(); |
| 1700 return true; | |
| 1701 } | |
| 1702 return false; | |
| 1703 } | |
| 1704 | |
| 1705 // 3: replace post- / prefixes | |
| 1706 | |
| 1707 CharSequence prefix; | |
| 1708 if (isWrongCaseMatch) | |
| 1709 prefix= wrongCasePrefix; | |
| 1710 else | |
| 1711 prefix= ""; //$NON-NLS-1$ | |
| 1712 | |
| 1713 CharSequence postfix; | |
| 1714 if (isWrongCaseMatch) | |
| 1715 postfix= wrongCasePostfix; | |
| 1716 else | |
| 1717 postfix= rightCasePostfix; | |
| 1718 | |
| 1719 if (prefix is null || postfix is null) | |
| 1720 return false; | |
| 1721 | |
| 1722 try { | |
| 1723 // 4: check if parts of the postfix are already in the document | |
| 1724 int to= Math.min(document.getLength(), fFilterOffset + postfix.length()); | |
| 1725 StringBuffer inDocument= new StringBuffer(document.get(fFilterOffset, to - fFilterOffset)); | |
| 1726 truncatePostfix(inDocument, postfix); | |
| 1727 | |
| 1728 // 5: replace and reveal | |
| 1729 document.replace(fFilterOffset - prefix.length(), prefix.length() + inDocument.length(), prefix.toString() + postfix.toString()); | |
| 1730 | |
| 1731 fContentAssistSubjectControlAdapter.setSelectedRange(fFilterOffset + postfix.length(), 0); | |
| 1732 fContentAssistSubjectControlAdapter.revealRange(fFilterOffset + postfix.length(), 0); | |
| 1733 fFilterOffset+= postfix.length(); | |
| 1734 fLastCompletionOffset= fFilterOffset; | |
| 1735 | |
| 1736 return false; | |
| 1737 } catch (BadLocationException e) { | |
| 1738 // ignore and return false | |
| 1739 return false; | |
| 1740 } | |
| 1741 } | |
| 1742 | |
| 1743 /* | |
| 1744 * @since 3.1 | |
| 1745 */ | |
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1746 private bool isPrefixCompatible(CharSequence oneSequence, int oneOffset, CharSequence twoSequence, int twoOffset, IDocument document) { |
| 129 | 1747 if (oneSequence is null || twoSequence is null) |
| 1748 return true; | |
| 1749 | |
| 1750 int min= Math.min(oneOffset, twoOffset); | |
| 1751 int oneEnd= oneOffset + oneSequence.length(); | |
| 1752 int twoEnd= twoOffset + twoSequence.length(); | |
| 1753 | |
| 1754 String one= document.get(oneOffset, min - oneOffset) + oneSequence + document.get(oneEnd, Math.min(fFilterOffset, fFilterOffset - oneEnd)); | |
| 1755 String two= document.get(twoOffset, min - twoOffset) + twoSequence + document.get(twoEnd, Math.min(fFilterOffset, fFilterOffset - twoEnd)); | |
| 1756 | |
| 1757 return one.equals(two); | |
| 1758 } | |
| 1759 | |
| 1760 /** | |
| 1761 * Truncates <code>buffer</code> to the common prefix of <code>buffer</code> | |
| 1762 * and <code>sequence</code>. | |
| 1763 * | |
| 1764 * @param buffer the common postfix to truncate | |
| 1765 * @param sequence the characters to truncate with | |
| 1766 */ | |
| 1767 private void truncatePostfix(StringBuffer buffer, CharSequence sequence) { | |
| 1768 // find common prefix | |
| 1769 int min= Math.min(buffer.length(), sequence.length()); | |
| 1770 for (int c= 0; c < min; c++) { | |
| 1771 if (sequence.charAt(c) !is buffer.charAt(c)) { | |
|
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1772 buffer.delete_(c, buffer.length()); |
| 129 | 1773 return; |
| 1774 } | |
| 1775 } | |
| 1776 | |
| 1777 // all equal up to minimum | |
|
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1778 buffer.delete_(min, buffer.length()); |
| 129 | 1779 } |
|
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1780 |
| 129 | 1781 /** |
| 1782 * Sets the message for the repetition affordance text at the bottom of the proposal. Only has | |
| 1783 * an effect if {@link ContentAssistant#isRepeatedInvocationMode()} returns <code>true</code>. | |
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1784 * |
| 129 | 1785 * @param message the new caption |
| 1786 * @since 3.2 | |
| 1787 */ | |
| 1788 void setMessage(String message) { | |
| 1789 Assert.isNotNull(message); | |
| 1790 if (isActive() && fMessageText !is null) | |
| 1791 fMessageText.setText(message + " "); //$NON-NLS-1$ | |
| 1792 } | |
| 1793 | |
| 1794 /** | |
| 1795 * Sets the text to be displayed if no proposals are available. Only has an effect if | |
| 1796 * {@link ContentAssistant#isShowEmptyList()} returns <code>true</code>. | |
|
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1797 * |
| 129 | 1798 * @param message the empty message |
| 1799 * @since 3.2 | |
| 1800 */ | |
| 1801 void setEmptyMessage(String message) { | |
| 1802 Assert.isNotNull(message); | |
| 1803 fEmptyMessage= message; | |
| 1804 } | |
| 1805 | |
| 1806 /** | |
| 1807 * Enables or disables showing of the caption line. See also {@link #setMessage(String)}. | |
|
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1808 * |
| 129 | 1809 * @param show |
| 1810 * @since 3.2 | |
| 1811 */ | |
| 1812 public void setStatusLineVisible(bool show) { | |
| 1813 if (!isActive() || show is (fMessageText !is null)) | |
| 1814 return; // nothing to do | |
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1815 |
| 129 | 1816 if (show) { |
| 1817 createMessageText(); | |
| 1818 } else { | |
| 1819 fMessageText.dispose(); | |
| 1820 fMessageText= null; | |
| 1821 } | |
| 1822 fProposalShell.layout(); | |
| 1823 } | |
| 1824 | |
| 1825 /** | |
| 1826 * Informs the popup that it is being placed above the caret line instead of below. | |
|
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1827 * |
| 129 | 1828 * @param above <code>true</code> if the location of the popup is above the caret line, <code>false</code> if it is below |
| 1829 * @since 3.3 | |
| 1830 */ | |
| 1831 void switchedPositionToAbove(bool above) { | |
| 1832 if (fAdditionalInfoController !is null) { | |
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1833 fAdditionalInfoController.setFallbackAnchors([ |
| 129 | 1834 AbstractInformationControlManager.ANCHOR_RIGHT, |
| 1835 AbstractInformationControlManager.ANCHOR_LEFT, | |
| 1836 above ? AbstractInformationControlManager.ANCHOR_TOP : AbstractInformationControlManager.ANCHOR_BOTTOM | |
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1837 ]); |
| 129 | 1838 } |
| 1839 } | |
| 1840 | |
| 1841 /** | |
| 1842 * Returns a new proposal selection handler. | |
|
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1843 * |
| 129 | 1844 * @param operationCode the operation code |
| 1845 * @return the handler | |
| 1846 * @since 3.4 | |
| 1847 */ | |
| 1848 IHandler createProposalSelectionHandler(int operationCode) { | |
| 1849 return new ProposalSelectionHandler(operationCode); | |
| 1850 } | |
| 1851 | |
| 1852 } |