Mercurial > projects > dwt-addons
annotate dwtx/jface/internal/text/link/contentassist/CompletionProposalPopup2.d @ 159:7926b636c282
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| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Wed, 27 Aug 2008 01:57:58 +0200 |
| parents | 25f1f92fa3df |
| children | 1a5b8f8129df |
| 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.internal.text.link.contentassist.CompletionProposalPopup2; | |
| 15 | |
| 131 | 16 import dwtx.jface.internal.text.link.contentassist.IProposalListener; // packageimport |
| 17 import dwtx.jface.internal.text.link.contentassist.LineBreakingReader; // packageimport | |
| 18 import dwtx.jface.internal.text.link.contentassist.ContextInformationPopup2; // packageimport | |
| 19 import dwtx.jface.internal.text.link.contentassist.ContentAssistMessages; // packageimport | |
| 20 import dwtx.jface.internal.text.link.contentassist.Helper2; // packageimport | |
| 21 import dwtx.jface.internal.text.link.contentassist.PopupCloser2; // packageimport | |
| 22 import dwtx.jface.internal.text.link.contentassist.IContentAssistListener2; // packageimport | |
| 23 import dwtx.jface.internal.text.link.contentassist.ContentAssistant2; // packageimport | |
| 24 import dwtx.jface.internal.text.link.contentassist.AdditionalInfoController2; // packageimport | |
| 25 | |
| 26 | |
| 129 | 27 import dwt.dwthelper.utils; |
| 28 | |
| 29 | |
|
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30 import dwtx.dwtxhelper.Collection; |
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31 |
| 129 | 32 |
| 33 import dwt.DWT; | |
| 34 import dwt.custom.StyleRange; | |
| 35 import dwt.custom.StyledText; | |
| 36 import dwt.events.ControlEvent; | |
| 37 import dwt.events.ControlListener; | |
| 38 import dwt.events.DisposeEvent; | |
| 39 import dwt.events.DisposeListener; | |
| 40 import dwt.events.KeyEvent; | |
| 41 import dwt.events.KeyListener; | |
| 42 import dwt.events.SelectionEvent; | |
| 43 import dwt.events.SelectionListener; | |
| 44 import dwt.events.VerifyEvent; | |
| 45 import dwt.graphics.Color; | |
| 46 import dwt.graphics.Point; | |
| 47 import dwt.layout.GridData; | |
| 48 import dwt.layout.GridLayout; | |
| 49 import dwt.widgets.Control; | |
| 50 import dwt.widgets.Shell; | |
| 51 import dwt.widgets.Table; | |
| 52 import dwt.widgets.TableItem; | |
| 53 import dwtx.jface.internal.text.TableOwnerDrawSupport; | |
| 54 import dwtx.jface.resource.JFaceResources; | |
| 55 import dwtx.jface.text.BadLocationException; | |
| 56 import dwtx.jface.text.DocumentEvent; | |
| 57 import dwtx.jface.text.IDocument; | |
| 58 import dwtx.jface.text.IDocumentListener; | |
| 59 import dwtx.jface.text.IEditingSupport; | |
| 60 import dwtx.jface.text.IEditingSupportRegistry; | |
| 61 import dwtx.jface.text.IRegion; | |
| 62 import dwtx.jface.text.IRewriteTarget; | |
| 63 import dwtx.jface.text.ITextViewer; | |
| 64 import dwtx.jface.text.ITextViewerExtension; | |
| 65 import dwtx.jface.text.TextUtilities; | |
| 66 import dwtx.jface.text.contentassist.ICompletionProposal; | |
| 67 import dwtx.jface.text.contentassist.ICompletionProposalExtension; | |
| 68 import dwtx.jface.text.contentassist.ICompletionProposalExtension2; | |
| 69 import dwtx.jface.text.contentassist.ICompletionProposalExtension6; | |
| 70 import dwtx.jface.text.contentassist.IContextInformation; | |
| 71 import dwtx.jface.viewers.StyledString; | |
| 72 | |
| 73 | |
| 74 | |
| 75 /** | |
| 76 * This class is used to present proposals to the user. If additional | |
| 77 * information exists for a proposal, then selecting that proposal | |
| 78 * will result in the information being displayed in a secondary | |
| 79 * window. | |
| 80 * | |
| 81 * @see dwtx.jface.text.contentassist.ICompletionProposal | |
| 82 * @see dwtx.jface.internal.text.link.contentassist.AdditionalInfoController2 | |
| 83 */ | |
| 84 class CompletionProposalPopup2 : IContentAssistListener2 { | |
| 85 | |
| 86 /** The associated text viewer */ | |
| 87 private ITextViewer fViewer; | |
| 88 /** The associated content assistant */ | |
| 89 private ContentAssistant2 fContentAssistant; | |
| 90 /** The used additional info controller */ | |
| 91 private AdditionalInfoController2 fAdditionalInfoController; | |
| 92 /** The closing strategy for this completion proposal popup */ | |
| 93 private PopupCloser2 fPopupCloser= new PopupCloser2(); | |
| 94 /** The popup shell */ | |
| 95 private Shell fProposalShell; | |
| 96 /** The proposal table */ | |
| 97 private Table fProposalTable; | |
| 98 /** Indicates whether a completion proposal is being inserted */ | |
| 99 private bool fInserting= false; | |
| 100 /** The key listener to control navigation */ | |
| 101 private KeyListener fKeyListener; | |
| 102 /** List of document events used for filtering proposals */ | |
| 103 private List fDocumentEvents= new ArrayList(); | |
| 104 /** Listener filling the document event queue */ | |
| 105 private IDocumentListener fDocumentListener; | |
| 106 /** Reentrance count for <code>filterProposals</code> */ | |
| 107 private long fInvocationCounter= 0; | |
| 108 /** The filter list of proposals */ | |
| 109 private ICompletionProposal[] fFilteredProposals; | |
| 110 /** The computed list of proposals */ | |
| 111 private ICompletionProposal[] fComputedProposals; | |
| 112 /** The offset for which the proposals have been computed */ | |
| 113 private int fInvocationOffset; | |
| 114 /** The offset for which the computed proposals have been filtered */ | |
| 115 private int fFilterOffset; | |
| 116 /** The default line delimiter of the viewer's widget */ | |
| 117 private String fLineDelimiter; | |
| 118 /** The most recently selected proposal. */ | |
| 119 private ICompletionProposal fLastProposal; | |
| 120 /** | |
| 121 * Tells whether colored labels support is enabled. | |
| 122 * Only valid while the popup is active. | |
| 150 | 123 * |
| 129 | 124 * @since 3.4 |
| 125 */ | |
| 126 private bool fIsColoredLabelsSupportEnabled= false; | |
| 150 | 127 |
| 159 | 128 private IEditingSupport fFocusEditingSupport; |
| 129 private void fFocusEditingSupport_init() { | |
| 130 fFocusEditingSupport = new class() IEditingSupport { | |
| 129 | 131 |
| 159 | 132 public bool isOriginator(DocumentEvent event, IRegion focus) { |
| 133 return false; | |
| 134 } | |
| 129 | 135 |
| 159 | 136 public bool ownsFocusShell() { |
| 137 return Helper2.okToUse(fProposalShell) && fProposalShell.isFocusControl() | |
| 138 || Helper2.okToUse(fProposalTable) && fProposalTable.isFocusControl(); | |
| 139 } | |
| 129 | 140 |
| 159 | 141 }; |
| 142 } | |
| 143 private IEditingSupport fModificationEditingSupport; | |
| 144 private void fModificationEditingSupport_init() { | |
| 145 fModificationEditingSupport = new class() IEditingSupport { | |
| 146 | |
| 147 public bool isOriginator(DocumentEvent event, IRegion focus) { | |
| 148 if (fViewer !is null) { | |
| 149 Point selection= fViewer.getSelectedRange(); | |
| 150 return selection.x <= focus.getOffset() + focus.getLength() && selection.x + selection.y >= focus.getOffset(); | |
| 151 } | |
| 152 return false; | |
| 129 | 153 } |
| 154 | |
| 159 | 155 public bool ownsFocusShell() { |
| 156 return false; | |
| 157 } | |
| 129 | 158 |
| 159 | 159 }; |
| 160 } | |
| 129 | 161 |
| 162 /** | |
| 163 * Creates a new completion proposal popup for the given elements. | |
| 164 * | |
| 165 * @param contentAssistant the content assistant feeding this popup | |
| 166 * @param viewer the viewer on top of which this popup appears | |
| 167 * @param infoController the info control collaborating with this popup | |
| 168 * @since 2.0 | |
| 169 */ | |
|
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170 public this(ContentAssistant2 contentAssistant, ITextViewer viewer, AdditionalInfoController2 infoController) { |
| 159 | 171 |
| 172 fModificationEditingSupport_init(); | |
| 173 fFocusEditingSupport_init(); | |
| 174 | |
| 129 | 175 fContentAssistant= contentAssistant; |
| 176 fViewer= viewer; | |
| 177 fAdditionalInfoController= infoController; | |
| 178 } | |
| 179 | |
| 180 /** | |
| 181 * Computes and presents completion proposals. The flag indicates whether this call has | |
| 182 * be made out of an auto activation context. | |
| 183 * | |
| 184 * @param autoActivated <code>true</code> if auto activation context | |
| 185 * @return an error message or <code>null</code> in case of no error | |
| 186 */ | |
| 158 | 187 public String showProposals(bool autoActivated) { |
| 129 | 188 |
| 189 if (fKeyListener is null) { | |
| 135 | 190 fKeyListener= new class() KeyListener { |
| 129 | 191 public void keyPressed(KeyEvent e) { |
| 192 if (!Helper2.okToUse(fProposalShell)) | |
| 193 return; | |
| 194 | |
| 195 if (e.character is 0 && e.keyCode is DWT.CTRL) { | |
| 196 // http://dev.eclipse.org/bugs/show_bug.cgi?id=34754 | |
| 197 int index= fProposalTable.getSelectionIndex(); | |
| 198 if (index >= 0) | |
| 199 selectProposal(index, true); | |
| 200 } | |
| 201 } | |
| 202 | |
| 203 public void keyReleased(KeyEvent e) { | |
| 204 if (!Helper2.okToUse(fProposalShell)) | |
| 205 return; | |
| 206 | |
| 207 if (e.character is 0 && e.keyCode is DWT.CTRL) { | |
| 208 // http://dev.eclipse.org/bugs/show_bug.cgi?id=34754 | |
| 209 int index= fProposalTable.getSelectionIndex(); | |
| 210 if (index >= 0) | |
| 211 selectProposal(index, false); | |
| 212 } | |
| 213 } | |
| 214 }; | |
| 215 } | |
| 216 | |
| 217 final StyledText styledText= fViewer.getTextWidget(); | |
| 218 if (styledText !is null && !styledText.isDisposed()) | |
| 219 styledText.addKeyListener(fKeyListener); | |
| 220 | |
| 135 | 221 // BusyIndicator.showWhile(styledText.getDisplay(), new class() Runnable { |
| 129 | 222 // public void run() { |
| 223 | |
| 224 fInvocationOffset= fViewer.getSelectedRange().x; | |
| 225 // lazily compute proposals | |
| 226 // if (fComputedProposals is null) fComputedProposals= computeProposals(fContentAssistant.getCompletionPosition()); | |
| 227 fComputedProposals= computeProposals(fInvocationOffset); | |
| 228 | |
| 229 int count= (fComputedProposals is null ? 0 : fComputedProposals.length); | |
| 230 if (count is 0) { | |
| 231 | |
| 232 if (!autoActivated) | |
| 233 styledText.getDisplay().beep(); | |
| 234 | |
| 235 } else { | |
| 236 | |
| 237 if (count is 1 && !autoActivated && fContentAssistant.isAutoInserting()) | |
| 238 | |
| 134 | 239 insertProposal(fComputedProposals[0], cast(wchar) 0, 0, fInvocationOffset); |
| 129 | 240 |
| 241 else { | |
| 242 | |
| 243 if (fLineDelimiter is null) | |
| 244 fLineDelimiter= styledText.getLineDelimiter(); | |
| 245 | |
| 246 createProposalSelector(); | |
| 247 setProposals(fComputedProposals); | |
| 248 resizeProposalSelector(true); | |
| 249 displayProposals(); | |
| 250 } | |
| 251 } | |
| 252 // } | |
| 253 // }); | |
| 254 | |
| 255 return getErrorMessage(); | |
| 256 } | |
| 257 | |
| 258 /** | |
| 259 * Returns the completion proposal available at the given offset of the | |
| 260 * viewer's document. Delegates the work to the content assistant. | |
| 261 * | |
| 262 * @param offset the offset | |
| 263 * @return the completion proposals available at this offset | |
| 264 */ | |
| 265 private ICompletionProposal[] computeProposals(int offset) { | |
| 266 return fContentAssistant.computeCompletionProposals(fViewer, offset); | |
| 267 } | |
| 268 | |
| 269 /** | |
| 270 * Returns the error message. | |
| 271 * | |
| 272 * @return the error message | |
| 273 */ | |
| 274 private String getErrorMessage() { | |
| 275 return fContentAssistant.getErrorMessage(); | |
| 276 } | |
| 277 | |
| 278 /** | |
| 279 * Creates the proposal selector. | |
| 280 */ | |
| 281 private void createProposalSelector() { | |
| 282 if (Helper2.okToUse(fProposalShell)) | |
| 283 return; | |
| 284 | |
| 285 Control control= fViewer.getTextWidget(); | |
| 286 fProposalShell= new Shell(control.getShell(), DWT.ON_TOP); | |
| 287 // fProposalShell= new Shell(control.getShell(), DWT.ON_TOP | DWT.RESIZE ); | |
| 288 fProposalTable= new Table(fProposalShell, DWT.H_SCROLL | DWT.V_SCROLL); | |
| 289 // fProposalTable= new Table(fProposalShell, DWT.H_SCROLL | DWT.V_SCROLL); | |
| 150 | 290 |
| 129 | 291 |
| 292 fIsColoredLabelsSupportEnabled= fContentAssistant.isColoredLabelsSupportEnabled(); | |
| 293 if (fIsColoredLabelsSupportEnabled) | |
| 294 TableOwnerDrawSupport.install(fProposalTable); | |
| 295 | |
| 296 fProposalTable.setLocation(0, 0); | |
| 297 if (fAdditionalInfoController !is null) | |
| 298 fAdditionalInfoController.setSizeConstraints(50, 10, true, false); | |
| 299 | |
| 300 GridLayout layout= new GridLayout(); | |
| 301 layout.marginWidth= 0; | |
| 302 layout.marginHeight= 0; | |
| 303 fProposalShell.setLayout(layout); | |
| 304 | |
| 305 GridData data= new GridData(GridData.FILL_BOTH); | |
| 306 fProposalTable.setLayoutData(data); | |
| 307 | |
| 308 fProposalShell.pack(); | |
| 309 | |
| 310 // set location | |
| 311 Point currentLocation= fProposalShell.getLocation(); | |
| 312 Point newLocation= getLocation(); | |
| 313 if ((newLocation.x < currentLocation.x && newLocation.y is currentLocation.y) || newLocation.y < currentLocation.y) | |
| 314 fProposalShell.setLocation(newLocation); | |
| 315 | |
| 316 if (fAdditionalInfoController !is null) { | |
| 135 | 317 fProposalShell.addControlListener(new class() ControlListener { |
| 129 | 318 |
| 319 public void controlMoved(ControlEvent e) {} | |
| 320 | |
| 321 public void controlResized(ControlEvent e) { | |
| 322 // resets the cached resize constraints | |
| 323 fAdditionalInfoController.setSizeConstraints(50, 10, true, false); | |
| 324 } | |
| 325 }); | |
| 326 } | |
| 327 | |
| 328 fProposalShell.setBackground(control.getDisplay().getSystemColor(DWT.COLOR_BLACK)); | |
| 329 | |
| 330 Color c= control.getDisplay().getSystemColor(DWT.COLOR_INFO_BACKGROUND); | |
| 331 fProposalTable.setBackground(c); | |
| 332 | |
| 333 c= control.getDisplay().getSystemColor(DWT.COLOR_INFO_FOREGROUND); | |
| 334 fProposalTable.setForeground(c); | |
| 335 | |
| 135 | 336 fProposalTable.addSelectionListener(new class() SelectionListener { |
| 129 | 337 |
| 338 public void widgetSelected(SelectionEvent e) {} | |
| 339 | |
| 340 public void widgetDefaultSelected(SelectionEvent e) { | |
| 341 selectProposalWithMask(e.stateMask); | |
| 342 } | |
| 343 }); | |
| 344 | |
| 345 fPopupCloser.install(fContentAssistant, fProposalTable); | |
| 346 | |
| 135 | 347 fProposalShell.addDisposeListener(new class() DisposeListener { |
| 129 | 348 public void widgetDisposed(DisposeEvent e) { |
| 349 unregister(); // but don't dispose the shell, since we're being called from its disposal event! | |
| 350 } | |
| 351 }); | |
| 352 | |
| 353 fProposalTable.setHeaderVisible(false); | |
| 354 fContentAssistant.addToLayout(this, fProposalShell, ContentAssistant2.LayoutManager.LAYOUT_PROPOSAL_SELECTOR, fContentAssistant.getSelectionOffset()); | |
| 355 } | |
| 356 | |
| 357 /** | |
| 358 * Returns the proposal selected in the proposal selector. | |
| 359 * | |
| 360 * @return the selected proposal | |
| 361 * @since 2.0 | |
| 362 */ | |
| 363 private ICompletionProposal getSelectedProposal() { | |
| 364 int i= fProposalTable.getSelectionIndex(); | |
| 365 if (i < 0 || i >= fFilteredProposals.length) | |
| 366 return null; | |
| 367 return fFilteredProposals[i]; | |
| 368 } | |
| 369 | |
| 370 /** | |
| 371 * Takes the selected proposal and applies it. | |
| 372 * | |
| 373 * @param stateMask the state mask | |
| 374 * @since 2.1 | |
| 375 */ | |
| 376 private void selectProposalWithMask(int stateMask) { | |
| 377 ICompletionProposal p= getSelectedProposal(); | |
| 378 hide(); | |
| 379 if (p !is null) | |
| 134 | 380 insertProposal(p, cast(wchar) 0, stateMask, fViewer.getSelectedRange().x); |
| 129 | 381 } |
| 382 | |
| 383 /** | |
| 384 * Applies the given proposal at the given offset. The given character is the | |
| 385 * one that triggered the insertion of this proposal. | |
| 386 * | |
| 387 * @param p the completion proposal | |
| 388 * @param trigger the trigger character | |
| 389 * @param stateMask the state mask of the keyboard event triggering the insertion | |
| 390 * @param offset the offset | |
| 391 * @since 2.1 | |
| 392 */ | |
| 158 | 393 private void insertProposal(ICompletionProposal p, char trigger, int stateMask, int offset) { |
| 129 | 394 |
| 395 fInserting= true; | |
| 396 IRewriteTarget target= null; | |
| 397 IEditingSupportRegistry registry= null; | |
| 398 | |
| 399 try { | |
| 400 | |
| 401 IDocument document= fViewer.getDocument(); | |
| 402 | |
| 138 | 403 if ( cast(ITextViewerExtension)fViewer ) { |
| 134 | 404 ITextViewerExtension extension= cast(ITextViewerExtension) fViewer; |
| 129 | 405 target= extension.getRewriteTarget(); |
| 406 } | |
| 407 | |
| 408 if (target !is null) | |
| 409 target.beginCompoundChange(); | |
| 410 | |
| 138 | 411 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 412 registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 413 registry.register(fModificationEditingSupport); |
| 414 } | |
| 415 | |
| 138 | 416 if ( cast(ICompletionProposalExtension2)p ) { |
| 134 | 417 ICompletionProposalExtension2 e= cast(ICompletionProposalExtension2) p; |
| 129 | 418 e.apply(fViewer, trigger, stateMask, offset); |
| 138 | 419 } else if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 420 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p; |
| 129 | 421 e.apply(document, trigger, offset); |
| 422 } else { | |
| 423 p.apply(document); | |
| 424 } | |
| 425 | |
| 426 Point selection= p.getSelection(document); | |
| 427 if (selection !is null) { | |
| 428 fViewer.setSelectedRange(selection.x, selection.y); | |
| 429 fViewer.revealRange(selection.x, selection.y); | |
| 430 } | |
| 431 | |
| 432 IContextInformation info= p.getContextInformation(); | |
| 433 if (info !is null) { | |
| 434 | |
| 435 int position; | |
| 138 | 436 if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 437 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p; |
| 129 | 438 position= e.getContextInformationPosition(); |
| 439 } else { | |
| 440 if (selection is null) | |
| 441 selection= fViewer.getSelectedRange(); | |
| 442 position= selection.x + selection.y; | |
| 443 } | |
| 444 | |
| 445 fContentAssistant.showContextInformation(info, position); | |
| 446 } | |
| 447 | |
| 448 fContentAssistant.fireProposalChosen(p); | |
| 449 | |
| 450 } finally { | |
| 451 if (target !is null) | |
| 452 target.endCompoundChange(); | |
| 453 | |
| 454 if (registry !is null) | |
| 455 registry.unregister(fModificationEditingSupport); | |
| 456 | |
| 457 fInserting= false; | |
| 458 } | |
| 459 } | |
| 460 | |
| 461 /** | |
| 462 * Returns whether this popup has the focus. | |
| 463 * | |
| 464 * @return <code>true</code> if the popup has the focus | |
| 465 */ | |
| 466 public bool hasFocus() { | |
| 467 if (Helper2.okToUse(fProposalShell)) | |
| 468 return (fProposalShell.isFocusControl() || fProposalTable.isFocusControl()); | |
| 469 | |
| 470 return false; | |
| 471 } | |
| 472 | |
| 473 /** | |
| 474 * Hides this popup. | |
| 475 */ | |
| 476 public void hide() { | |
| 477 | |
| 478 unregister(); | |
| 479 | |
| 138 | 480 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 481 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 482 registry.unregister(fFocusEditingSupport); |
| 483 } | |
| 484 | |
| 485 if (Helper2.okToUse(fProposalShell)) { | |
| 486 fContentAssistant.removeContentAssistListener(this, ContentAssistant2.PROPOSAL_SELECTOR); | |
| 487 | |
| 488 fPopupCloser.uninstall(); | |
| 489 // see bug 47511: setVisible may run the event loop on GTK | |
| 490 // and trigger a rentrant call - have to make sure we don't | |
| 491 // dispose another shell that was already brought up in a | |
| 492 // reentrant call when calling setVisible() | |
| 493 Shell tempShell= fProposalShell; | |
| 494 fProposalShell= null; | |
| 495 tempShell.setVisible(false); | |
| 496 tempShell.dispose(); | |
| 497 } | |
| 498 } | |
| 499 | |
| 500 private void unregister() { | |
| 501 if (fDocumentListener !is null) { | |
| 502 IDocument document= fViewer.getDocument(); | |
| 503 if (document !is null) | |
| 504 document.removeDocumentListener(fDocumentListener); | |
| 505 fDocumentListener= null; | |
| 506 } | |
| 507 fDocumentEvents.clear(); | |
| 508 | |
| 509 StyledText styledText= fViewer.getTextWidget(); | |
| 510 if (fKeyListener !is null && styledText !is null && !styledText.isDisposed()) | |
| 511 styledText.removeKeyListener(fKeyListener); | |
| 512 | |
| 513 if (fLastProposal !is null) { | |
| 138 | 514 if ( cast(ICompletionProposalExtension2)fLastProposal ) { |
| 134 | 515 ICompletionProposalExtension2 extension= cast(ICompletionProposalExtension2) fLastProposal; |
| 129 | 516 extension.unselected(fViewer); |
| 517 } | |
| 518 | |
| 519 fLastProposal= null; | |
| 520 } | |
| 521 | |
| 522 fFilteredProposals= null; | |
| 523 | |
| 524 fContentAssistant.possibleCompletionsClosed(); | |
| 525 } | |
| 526 | |
| 527 /** | |
| 528 *Returns whether this popup is active. It is active if the propsal selector is visible. | |
| 529 * | |
| 530 * @return <code>true</code> if this popup is active | |
| 531 */ | |
| 532 public bool isActive() { | |
| 533 return fProposalShell !is null && !fProposalShell.isDisposed(); | |
| 534 } | |
| 535 | |
| 536 /** | |
| 537 * Initializes the proposal selector with these given proposals. | |
| 538 * | |
| 539 * @param proposals the proposals | |
| 540 */ | |
| 541 private void setProposals(ICompletionProposal[] proposals) { | |
| 542 if (Helper2.okToUse(fProposalTable)) { | |
| 543 | |
| 544 ICompletionProposal oldProposal= getSelectedProposal(); | |
| 138 | 545 if ( cast(ICompletionProposalExtension2)oldProposal ) |
| 134 | 546 (cast(ICompletionProposalExtension2) oldProposal).unselected(fViewer); |
| 129 | 547 |
| 548 fFilteredProposals= proposals; | |
| 549 | |
| 550 fProposalTable.setRedraw(false); | |
| 551 fProposalTable.removeAll(); | |
| 552 | |
| 553 Point selection= fViewer.getSelectedRange(); | |
| 554 int endOffset; | |
| 555 endOffset= selection.x + selection.y; | |
| 556 IDocument document= fViewer.getDocument(); | |
| 557 bool validate= false; | |
| 558 if (selection.y !is 0 && document !is null) validate= true; | |
| 559 int selectionIndex= 0; | |
| 560 | |
| 561 TableItem item; | |
| 562 ICompletionProposal p; | |
| 563 for (int i= 0; i < proposals.length; i++) { | |
| 564 p= proposals[i]; | |
| 565 item= new TableItem(fProposalTable, DWT.NULL); | |
| 566 if (p.getImage() !is null) | |
| 567 item.setImage(p.getImage()); | |
| 150 | 568 |
| 129 | 569 String displayString; |
| 570 StyleRange[] styleRanges= null; | |
| 143 | 571 if (fIsColoredLabelsSupportEnabled && cast(ICompletionProposalExtension6)p ) { |
| 134 | 572 StyledString styledString= (cast(ICompletionProposalExtension6)p).getStyledDisplayString(); |
| 129 | 573 displayString= styledString.getString(); |
| 574 styleRanges= styledString.getStyleRanges(); | |
| 575 } else | |
| 576 displayString= p.getDisplayString(); | |
| 577 | |
| 578 item.setText(displayString); | |
| 579 if (fIsColoredLabelsSupportEnabled) | |
| 580 TableOwnerDrawSupport.storeStyleRanges(item, 0, styleRanges); | |
| 150 | 581 |
| 129 | 582 item.setData(p); |
| 583 | |
| 584 if (validate && validateProposal(document, p, endOffset, null)) { | |
| 585 selectionIndex= i; | |
| 586 validate= false; | |
| 587 } | |
| 588 } | |
| 589 | |
| 590 resizeProposalSelector(false); | |
| 591 | |
| 592 selectProposal(selectionIndex, false); | |
| 593 fProposalTable.setRedraw(true); | |
| 594 } | |
| 595 } | |
| 596 | |
| 597 private void resizeProposalSelector(bool adjustWidth) { | |
| 598 // in order to fill in the table items so size computation works correctly | |
| 599 // will cause flicker, though | |
| 600 fProposalTable.setRedraw(true); | |
| 601 | |
| 134 | 602 int width= adjustWidth ? DWT.DEFAULT : (cast(GridData)fProposalTable.getLayoutData()).widthHint; |
| 129 | 603 Point size= fProposalTable.computeSize(width, DWT.DEFAULT, true); |
| 604 | |
| 605 GridData data= new GridData(GridData.FILL_BOTH); | |
| 606 data.widthHint= adjustWidth ? Math.min(size.x, 300) : width; | |
| 607 data.heightHint= Math.min(getTableHeightHint(fProposalTable, fProposalTable.getItemCount()), getTableHeightHint(fProposalTable, 10)); | |
| 608 fProposalTable.setLayoutData(data); | |
| 609 | |
| 610 fProposalShell.layout(true); | |
| 611 fProposalShell.pack(); | |
| 612 | |
| 613 if (adjustWidth) { | |
| 614 fProposalShell.setLocation(getLocation()); | |
| 615 } | |
| 616 } | |
| 617 | |
| 618 /** | |
| 619 * Computes the table hight hint for <code>table</code>. | |
| 620 * | |
| 621 * @param table the table to compute the height for | |
| 622 * @param rows the number of rows to compute the height for | |
| 623 * @return the height hint for <code>table</code> | |
| 624 */ | |
| 625 private int getTableHeightHint(Table table, int rows) { | |
| 626 if (table.getFont().equals(JFaceResources.getDefaultFont())) | |
| 627 table.setFont(JFaceResources.getDialogFont()); | |
| 628 int result= table.getItemHeight() * rows; | |
| 629 if (table.getLinesVisible()) | |
| 630 result+= table.getGridLineWidth() * (rows - 1); | |
| 631 | |
| 632 // TODO adjust to correct size. +4 works on windows, but not others | |
| 633 // return result + 4; | |
| 634 return result; | |
| 635 } | |
| 636 | |
| 637 private bool validateProposal(IDocument document, ICompletionProposal p, int offset, DocumentEvent event) { | |
| 638 // detect selected | |
| 138 | 639 if ( cast(ICompletionProposalExtension2)p ) { |
| 134 | 640 ICompletionProposalExtension2 e= cast(ICompletionProposalExtension2) p; |
| 129 | 641 if (e.validate(document, offset, event)) |
| 642 return true; | |
| 138 | 643 } else if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 644 ICompletionProposalExtension e= cast(ICompletionProposalExtension) p; |
| 129 | 645 if (e.isValidFor(document, offset)) |
| 646 return true; | |
| 647 } | |
| 648 return false; | |
| 649 } | |
| 650 | |
| 651 /** | |
| 652 * Returns the graphical location at which this popup should be made visible. | |
| 653 * | |
| 654 * @return the location of this popup | |
| 655 */ | |
| 656 private Point getLocation() { | |
| 657 StyledText text= fViewer.getTextWidget(); | |
| 658 Point selection= text.getSelection(); | |
| 659 Point p= text.getLocationAtOffset(selection.x); | |
| 660 p.x -= fProposalShell.getBorderWidth(); | |
| 661 if (p.x < 0) p.x= 0; | |
| 662 if (p.y < 0) p.y= 0; | |
| 663 p= new Point(p.x, p.y + text.getLineHeight(selection.x)); | |
| 664 p= text.toDisplay(p); | |
| 665 return p; | |
| 666 } | |
| 667 | |
| 668 /** | |
| 669 *Displays this popup and install the additional info controller, so that additional info | |
| 670 * is displayed when a proposal is selected and additional info is available. | |
| 671 */ | |
| 672 private void displayProposals() { | |
| 673 if (fContentAssistant.addContentAssistListener(this, ContentAssistant2.PROPOSAL_SELECTOR)) { | |
| 674 | |
| 675 if (fDocumentListener is null) | |
| 135 | 676 fDocumentListener= new class() IDocumentListener { |
| 129 | 677 public void documentAboutToBeChanged(DocumentEvent event) { |
| 678 if (!fInserting) | |
| 679 fDocumentEvents.add(event); | |
| 680 } | |
| 681 | |
| 682 public void documentChanged(DocumentEvent event) { | |
| 683 if (!fInserting) | |
| 684 filterProposals(); | |
| 685 } | |
| 686 }; | |
| 687 IDocument document= fViewer.getDocument(); | |
| 688 if (document !is null) | |
| 689 document.addDocumentListener(fDocumentListener); | |
| 690 | |
| 691 | |
| 138 | 692 if ( cast(IEditingSupportRegistry)fViewer ) { |
| 134 | 693 IEditingSupportRegistry registry= cast(IEditingSupportRegistry) fViewer; |
| 129 | 694 registry.register(fFocusEditingSupport); |
| 695 } | |
| 696 | |
| 697 fProposalShell.setVisible(true); | |
| 698 // see bug 47511: setVisible may run the event loop on GTK | |
| 699 // and trigger a rentrant call - have to check whether we are still | |
| 700 // visible | |
| 701 if (!Helper2.okToUse(fProposalShell)) | |
| 702 return; | |
| 703 | |
| 704 | |
| 705 if (fAdditionalInfoController !is null) { | |
| 706 fAdditionalInfoController.install(fProposalTable); | |
| 707 fAdditionalInfoController.handleTableSelectionChanged(); | |
| 708 } | |
| 709 } | |
| 710 } | |
| 711 | |
| 712 /* | |
| 713 * @see IContentAssistListener#verifyKey(VerifyEvent) | |
| 714 */ | |
| 715 public bool verifyKey(VerifyEvent e) { | |
| 716 if (!Helper2.okToUse(fProposalShell)) | |
| 717 return true; | |
| 718 | |
| 719 char key= e.character; | |
| 720 if (key is 0) { | |
| 721 int newSelection= fProposalTable.getSelectionIndex(); | |
| 722 int visibleRows= (fProposalTable.getSize().y / fProposalTable.getItemHeight()) - 1; | |
| 723 bool smartToggle= false; | |
| 724 switch (e.keyCode) { | |
| 725 | |
| 726 case DWT.ARROW_LEFT : | |
| 727 case DWT.ARROW_RIGHT : | |
| 728 filterProposals(); | |
| 729 return true; | |
| 730 | |
| 731 case DWT.ARROW_UP : | |
| 732 newSelection -= 1; | |
| 733 if (newSelection < 0) | |
| 734 newSelection= fProposalTable.getItemCount() - 1; | |
| 735 break; | |
| 736 | |
| 737 case DWT.ARROW_DOWN : | |
| 738 newSelection += 1; | |
| 739 if (newSelection > fProposalTable.getItemCount() - 1) | |
| 740 newSelection= 0; | |
| 741 break; | |
| 742 | |
| 743 case DWT.PAGE_DOWN : | |
| 744 newSelection += visibleRows; | |
| 745 if (newSelection >= fProposalTable.getItemCount()) | |
| 746 newSelection= fProposalTable.getItemCount() - 1; | |
| 747 break; | |
| 748 | |
| 749 case DWT.PAGE_UP : | |
| 750 newSelection -= visibleRows; | |
| 751 if (newSelection < 0) | |
| 752 newSelection= 0; | |
| 753 break; | |
| 754 | |
| 755 case DWT.HOME : | |
| 756 newSelection= 0; | |
| 757 break; | |
| 758 | |
| 759 case DWT.END : | |
| 760 newSelection= fProposalTable.getItemCount() - 1; | |
| 761 break; | |
| 762 | |
| 763 default : | |
| 764 if (e.keyCode !is DWT.MOD1 && e.keyCode !is DWT.MOD2 && e.keyCode !is DWT.MOD3 && e.keyCode !is DWT.MOD4) | |
| 765 hide(); | |
| 766 return true; | |
| 767 } | |
| 768 | |
| 769 selectProposal(newSelection, smartToggle); | |
| 770 | |
| 771 e.doit= false; | |
| 772 return false; | |
| 773 | |
| 774 } | |
| 775 | |
| 776 // key !is 0 | |
| 777 switch (key) { | |
| 778 case 0x1B: // Esc | |
| 779 e.doit= false; | |
| 780 hide(); | |
| 781 break; | |
| 782 | |
| 783 case '\n': // Ctrl-Enter on w2k | |
| 784 case '\r': // Enter | |
| 785 if ((e.stateMask & DWT.CTRL) is 0) { | |
| 786 e.doit= false; | |
| 787 selectProposalWithMask(e.stateMask); | |
| 788 } | |
| 789 break; | |
| 790 | |
| 791 // in linked mode: hide popup | |
| 792 // plus: don't invalidate the event in order to give LinkedUI a chance to handle it | |
| 793 case '\t': | |
| 794 // hide(); | |
| 795 break; | |
| 796 | |
| 797 default: | |
| 798 ICompletionProposal p= getSelectedProposal(); | |
| 138 | 799 if ( cast(ICompletionProposalExtension)p ) { |
| 134 | 800 ICompletionProposalExtension t= cast(ICompletionProposalExtension) p; |
| 129 | 801 char[] triggers= t.getTriggerCharacters(); |
| 802 if (contains(triggers, key)) { | |
| 803 hide(); | |
| 804 if (key is ';') { | |
| 805 e.doit= true; | |
| 134 | 806 insertProposal(p, cast(wchar) 0, e.stateMask, fViewer.getSelectedRange().x); |
| 129 | 807 } else { |
| 808 e.doit= false; | |
| 809 insertProposal(p, key, e.stateMask, fViewer.getSelectedRange().x); | |
| 810 } | |
| 811 } | |
| 812 } | |
| 813 } | |
| 814 | |
| 815 return true; | |
| 816 } | |
| 817 | |
| 818 /** | |
| 819 * Selects the entry with the given index in the proposal selector and feeds | |
| 820 * the selection to the additional info controller. | |
| 821 * | |
| 822 * @param index the index in the list | |
| 823 * @param smartToggle <code>true</code> if the smart toogle key has been pressed | |
| 824 * @since 2.1 | |
| 825 */ | |
| 826 private void selectProposal(int index, bool smartToggle) { | |
| 827 | |
| 828 ICompletionProposal oldProposal= getSelectedProposal(); | |
| 138 | 829 if ( cast(ICompletionProposalExtension2)oldProposal ) |
| 134 | 830 (cast(ICompletionProposalExtension2) oldProposal).unselected(fViewer); |
| 129 | 831 |
| 832 ICompletionProposal proposal= fFilteredProposals[index]; | |
| 138 | 833 if ( cast(ICompletionProposalExtension2)proposal ) |
| 134 | 834 (cast(ICompletionProposalExtension2) proposal).selected(fViewer, smartToggle); |
| 129 | 835 |
| 836 fLastProposal= proposal; | |
| 837 | |
| 838 fProposalTable.setSelection(index); | |
| 839 fProposalTable.showSelection(); | |
| 840 if (fAdditionalInfoController !is null) | |
| 841 fAdditionalInfoController.handleTableSelectionChanged(); | |
| 842 } | |
| 843 | |
| 844 /** | |
| 845 * Returns whether the given character is contained in the given array of | |
| 846 * characters. | |
| 847 * | |
| 848 * @param characters the list of characters | |
| 849 * @param c the character to look for in the list | |
| 850 * @return <code>true</code> if character belongs to the list | |
| 851 * @since 2.0 | |
| 852 */ | |
| 853 private bool contains(char[] characters, char c) { | |
| 854 | |
| 855 if (characters is null) | |
| 856 return false; | |
| 857 | |
| 858 for (int i= 0; i < characters.length; i++) { | |
| 859 if (c is characters[i]) | |
| 860 return true; | |
| 861 } | |
| 862 | |
| 863 return false; | |
| 864 } | |
| 865 | |
| 866 /* | |
| 867 * @see IEventConsumer#processEvent(VerifyEvent) | |
| 868 */ | |
| 869 public void processEvent(VerifyEvent e) { | |
| 870 } | |
| 871 | |
| 872 /** | |
| 873 * Filters the displayed proposal based on the given cursor position and the | |
| 874 * offset of the original invocation of the content assistant. | |
| 875 */ | |
| 876 private void filterProposals() { | |
| 877 ++ fInvocationCounter; | |
| 878 Control control= fViewer.getTextWidget(); | |
| 135 | 879 control.getDisplay().asyncExec(new class() Runnable { |
| 129 | 880 long fCounter= fInvocationCounter; |
| 881 public void run() { | |
| 882 | |
| 883 if (fCounter !is fInvocationCounter) return; | |
| 884 | |
| 885 int offset= fViewer.getSelectedRange().x; | |
| 886 ICompletionProposal[] proposals= null; | |
| 887 try { | |
| 888 if (offset > -1) { | |
| 889 DocumentEvent event= TextUtilities.mergeProcessedDocumentEvents(fDocumentEvents); | |
| 890 proposals= computeFilteredProposals(offset, event); | |
| 891 } | |
| 892 } catch (BadLocationException x) { | |
| 893 } finally { | |
| 894 fDocumentEvents.clear(); | |
| 895 } | |
| 896 fFilterOffset= offset; | |
| 897 | |
| 898 if (proposals !is null && proposals.length > 0) | |
| 899 setProposals(proposals); | |
| 900 else | |
| 901 hide(); | |
| 902 } | |
| 903 }); | |
| 904 } | |
| 905 | |
| 906 /** | |
| 907 * Computes the subset of already computed propsals that are still valid for | |
| 908 * the given offset. | |
| 909 * | |
| 910 * @param offset the offset | |
| 911 * @param event the merged document event | |
| 912 * @return the set of filtered proposals | |
| 913 * @since 2.0 | |
| 914 */ | |
| 915 private ICompletionProposal[] computeFilteredProposals(int offset, DocumentEvent event) { | |
| 916 | |
| 917 if (offset is fInvocationOffset && event is null) | |
| 918 return fComputedProposals; | |
| 919 | |
| 920 if (offset < fInvocationOffset) { | |
| 921 return null; | |
| 922 } | |
| 923 | |
| 924 ICompletionProposal[] proposals= fComputedProposals; | |
| 925 if (offset > fFilterOffset) | |
| 926 proposals= fFilteredProposals; | |
| 927 | |
| 928 if (proposals is null) | |
| 929 return null; | |
| 930 | |
| 931 IDocument document= fViewer.getDocument(); | |
| 932 int length= proposals.length; | |
| 933 List filtered= new ArrayList(length); | |
| 934 for (int i= 0; i < length; i++) { | |
| 935 | |
| 150 | 936 if (cast(ICompletionProposalExtension2)proposals[i] ) { |
| 129 | 937 |
| 134 | 938 ICompletionProposalExtension2 p= cast(ICompletionProposalExtension2) proposals[i]; |
| 129 | 939 if (p.validate(document, offset, event)) |
| 940 filtered.add(p); | |
| 941 | |
| 150 | 942 } else if (cast(ICompletionProposalExtension)proposals[i] ) { |
| 129 | 943 |
| 134 | 944 ICompletionProposalExtension p= cast(ICompletionProposalExtension) proposals[i]; |
| 129 | 945 if (p.isValidFor(document, offset)) |
| 946 filtered.add(p); | |
| 947 | |
| 948 } else { | |
| 949 // restore original behavior | |
| 950 fInvocationOffset= offset; | |
| 951 fComputedProposals= computeProposals(fInvocationOffset); | |
| 952 return fComputedProposals; | |
| 953 } | |
| 954 } | |
| 955 | |
| 956 ICompletionProposal[] p= new ICompletionProposal[filtered.size()]; | |
| 957 filtered.toArray(p); | |
| 958 return p; | |
| 959 } | |
| 960 | |
| 961 /** | |
| 962 * Requests the proposal shell to take focus. | |
| 963 * | |
| 964 * @since 3.0 | |
| 965 */ | |
| 966 public void setFocus() { | |
| 967 if (Helper2.okToUse(fProposalShell)) | |
| 968 fProposalShell.setFocus(); | |
| 969 } | |
| 970 } |