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comparison dwtx/jface/text/hyperlink/MultipleHyperlinkPresenter.d @ 129:eb30df5ca28b

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Added JFace Text sources
author Frank Benoit <benoit@tionex.de>
date Sat, 23 Aug 2008 19:10:48 +0200
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children c4fb132a086c
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128:8df1d4193877 129:eb30df5ca28b
1 /*******************************************************************************
2 * Copyright (c) 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13 module dwtx.jface.text.hyperlink.MultipleHyperlinkPresenter;
14
15 import dwt.dwthelper.utils;
16
17
18 import dwt.DWT;
19 import dwt.events.KeyAdapter;
20 import dwt.events.KeyEvent;
21 import dwt.events.KeyListener;
22 import dwt.events.MouseAdapter;
23 import dwt.events.MouseEvent;
24 import dwt.events.MouseMoveListener;
25 import dwt.events.SelectionAdapter;
26 import dwt.events.SelectionEvent;
27 import dwt.events.ShellAdapter;
28 import dwt.events.ShellEvent;
29 import dwt.graphics.Color;
30 import dwt.graphics.Point;
31 import dwt.graphics.RGB;
32 import dwt.graphics.Rectangle;
33 import dwt.layout.GridLayout;
34 import dwt.widgets.Composite;
35 import dwt.widgets.Control;
36 import dwt.widgets.Display;
37 import dwt.widgets.Event;
38 import dwt.widgets.Listener;
39 import dwt.widgets.Shell;
40 import dwt.widgets.Table;
41 import dwt.widgets.TableItem;
42 import dwtx.jface.preference.IPreferenceStore;
43 import dwtx.jface.text.AbstractInformationControl;
44 import dwtx.jface.text.AbstractInformationControlManager;
45 import dwtx.jface.text.IInformationControl;
46 import dwtx.jface.text.IInformationControlCreator;
47 import dwtx.jface.text.IInformationControlExtension2;
48 import dwtx.jface.text.IInformationControlExtension3;
49 import dwtx.jface.text.IRegion;
50 import dwtx.jface.text.ITextHover;
51 import dwtx.jface.text.ITextHoverExtension;
52 import dwtx.jface.text.ITextViewer;
53 import dwtx.jface.text.IWidgetTokenKeeper;
54 import dwtx.jface.text.IWidgetTokenKeeperExtension;
55 import dwtx.jface.text.IWidgetTokenOwner;
56 import dwtx.jface.text.IWidgetTokenOwnerExtension;
57 import dwtx.jface.text.JFaceTextUtil;
58 import dwtx.jface.text.Region;
59 import dwtx.jface.util.Geometry;
60 import dwtx.jface.viewers.ColumnLabelProvider;
61 import dwtx.jface.viewers.IStructuredContentProvider;
62 import dwtx.jface.viewers.TableViewer;
63 import dwtx.jface.viewers.Viewer;
64
65
66 /**
67 * A hyperlink presenter capable of showing multiple hyperlinks in a hover.
68 *
69 * @since 3.4
70 */
71 public class MultipleHyperlinkPresenter : DefaultHyperlinkPresenter {
72
73 /**
74 * An information control capable of showing a list of hyperlinks. The hyperlinks can be opened.
75 */
76 private static class LinkListInformationControl : AbstractInformationControl , IInformationControlExtension2 {
77
78 private static final class LinkContentProvider : IStructuredContentProvider {
79
80 /*
81 * @see dwtx.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
82 */
83 public Object[] getElements(Object inputElement) {
84 return (Object[]) inputElement;
85 }
86
87 /*
88 * @see dwtx.jface.viewers.IContentProvider#dispose()
89 */
90 public void dispose() {
91 }
92
93 /*
94 * @see dwtx.jface.viewers.IContentProvider#inputChanged(dwtx.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
95 */
96 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
97 }
98 }
99
100 private static final class LinkLabelProvider : ColumnLabelProvider {
101 /*
102 * @see dwtx.jface.viewers.ColumnLabelProvider#getText(java.lang.Object)
103 */
104 public String getText(Object element) {
105 IHyperlink link= (IHyperlink)element;
106 String text= link.getHyperlinkText();
107 if (text !is null)
108 return text;
109 return HyperlinkMessages.getString("LinkListInformationControl.unknownLink"); //$NON-NLS-1$
110 }
111 }
112
113 private final MultipleHyperlinkHoverManager fManager;
114
115 private IHyperlink[] fInput;
116 private Composite fParent;
117 private Table fTable;
118
119 private Color fForegroundColor;
120 private Color fBackgroundColor;
121
122
123 /**
124 * Creates a link list information control with the given shell as parent.
125 *
126 * @param parentShell the parent shell
127 * @param manager the hover manager
128 * @param foregroundColor the foreground color, must not be disposed
129 * @param backgroundColor the background color, must not be disposed
130 */
131 public LinkListInformationControl(Shell parentShell, MultipleHyperlinkHoverManager manager, Color foregroundColor, Color backgroundColor) {
132 super(parentShell, false);
133 fManager= manager;
134 fForegroundColor= foregroundColor;
135 fBackgroundColor= backgroundColor;
136 create();
137 }
138
139 /*
140 * @see dwtx.jface.text.IInformationControl#setInformation(java.lang.String)
141 */
142 public void setInformation(String information) {
143 //replaced by IInformationControlExtension2#setInput(java.lang.Object)
144 }
145
146 /*
147 * @see dwtx.jface.text.IInformationControlExtension2#setInput(java.lang.Object)
148 */
149 public void setInput(Object input) {
150 fInput= (IHyperlink[]) input;
151 deferredCreateContent(fParent);
152 }
153
154 /*
155 * @see dwtx.jface.text.AbstractInformationControl#createContent(dwt.widgets.Composite)
156 */
157 protected void createContent(Composite parent) {
158 fParent= parent;
159 if ("win32".equals(DWT.getPlatform())) { //$NON-NLS-1$
160 GridLayout layout= new GridLayout();
161 layout.marginWidth= 0;
162 layout.marginRight= 4;
163 fParent.setLayout(layout);
164 }
165 fParent.setForeground(fForegroundColor);
166 fParent.setBackground(fBackgroundColor);
167 }
168
169 /*
170 * @see dwtx.jface.text.AbstractInformationControl#computeSizeHint()
171 */
172 public Point computeSizeHint() {
173 Point preferedSize= getShell().computeSize(DWT.DEFAULT, DWT.DEFAULT, true);
174
175 Point constraints= getSizeConstraints();
176 if (constraints is null)
177 return preferedSize;
178
179 if (fTable.getVerticalBar() is null || fTable.getHorizontalBar() is null)
180 return Geometry.min(constraints, preferedSize);
181
182 int scrollBarWidth= fTable.getVerticalBar().getSize().x;
183 int scrollBarHeight= fTable.getHorizontalBar().getSize().y;
184
185 int width;
186 if (preferedSize.y - scrollBarHeight <= constraints.y) {
187 width= preferedSize.x - scrollBarWidth;
188 fTable.getVerticalBar().setVisible(false);
189 } else {
190 width= Math.min(preferedSize.x, constraints.x);
191 }
192
193 int height;
194 if (preferedSize.x - scrollBarWidth <= constraints.x) {
195 height= preferedSize.y - scrollBarHeight;
196 fTable.getHorizontalBar().setVisible(false);
197 } else {
198 height= Math.min(preferedSize.y, constraints.y);
199 }
200
201 return new Point(width, height);
202 }
203
204 private void deferredCreateContent(Composite parent) {
205 fTable= new Table(parent, DWT.SINGLE | DWT.FULL_SELECTION);
206 fTable.setLinesVisible(false);
207 fTable.setHeaderVisible(false);
208 fTable.setForeground(fForegroundColor);
209 fTable.setBackground(fBackgroundColor);
210
211 final TableViewer viewer= new TableViewer(fTable);
212 viewer.setContentProvider(new LinkContentProvider());
213 viewer.setLabelProvider(new LinkLabelProvider());
214 viewer.setInput(fInput);
215 fTable.setSelection(0);
216
217 registerTableListeners();
218
219 getShell().addShellListener(new ShellAdapter() {
220
221 /*
222 * @see dwt.events.ShellAdapter#shellActivated(dwt.events.ShellEvent)
223 */
224 public void shellActivated(ShellEvent e) {
225 if (viewer.getTable().getSelectionCount() is 0) {
226 viewer.getTable().setSelection(0);
227 }
228
229 viewer.getTable().setFocus();
230 }
231 });
232 }
233
234 private void registerTableListeners() {
235
236 fTable.addMouseMoveListener(new MouseMoveListener() {
237 TableItem fLastItem= null;
238
239 public void mouseMove(MouseEvent e) {
240 if (fTable.equals(e.getSource())) {
241 Object o= fTable.getItem(new Point(e.x, e.y));
242 if (o instanceof TableItem) {
243 TableItem item= (TableItem) o;
244 if (!o.equals(fLastItem)) {
245 fLastItem= (TableItem) o;
246 fTable.setSelection(new TableItem[] { fLastItem });
247 } else if (e.y < fTable.getItemHeight() / 4) {
248 // Scroll up
249 int index= fTable.indexOf(item);
250 if (index > 0) {
251 fLastItem= fTable.getItem(index - 1);
252 fTable.setSelection(new TableItem[] { fLastItem });
253 }
254 } else if (e.y > fTable.getBounds().height - fTable.getItemHeight() / 4) {
255 // Scroll down
256 int index= fTable.indexOf(item);
257 if (index < fTable.getItemCount() - 1) {
258 fLastItem= fTable.getItem(index + 1);
259 fTable.setSelection(new TableItem[] { fLastItem });
260 }
261 }
262 }
263 }
264 }
265 });
266
267 fTable.addSelectionListener(new SelectionAdapter() {
268 public void widgetSelected(SelectionEvent e) {
269 openSelectedLink();
270 }
271 });
272
273 fTable.addMouseListener(new MouseAdapter() {
274 public void mouseUp(MouseEvent e) {
275 if (fTable.getSelectionCount() < 1)
276 return;
277
278 if (e.button !is 1)
279 return;
280
281 if (fTable.equals(e.getSource())) {
282 Object o= fTable.getItem(new Point(e.x, e.y));
283 TableItem selection= fTable.getSelection()[0];
284 if (selection.equals(o))
285 openSelectedLink();
286 }
287 }
288 });
289
290 fTable.addKeyListener(new KeyAdapter() {
291 public void keyPressed(KeyEvent e) {
292 if (e.keyCode is 0x0D) // return
293 openSelectedLink();
294 }
295 });
296 }
297
298 /*
299 * @see dwtx.jface.text.IInformationControlExtension#hasContents()
300 */
301 public bool hasContents() {
302 return true;
303 }
304
305 /**
306 * Opens the currently selected link.
307 */
308 private void openSelectedLink() {
309 TableItem selection= fTable.getSelection()[0];
310 IHyperlink link= (IHyperlink)selection.getData();
311 fManager.hideInformationControl();
312 link.open();
313 }
314 }
315
316 private class MultipleHyperlinkHover : ITextHover, ITextHoverExtension {
317
318 /**
319 * @see dwtx.jface.text.ITextHover#getHoverInfo(dwtx.jface.text.ITextViewer, dwtx.jface.text.IRegion)
320 * @deprecated
321 */
322 public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
323 return null;
324 }
325
326 /*
327 * @see dwtx.jface.text.ITextHover#getHoverRegion(dwtx.jface.text.ITextViewer, int)
328 */
329 public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
330 return fSubjectRegion;
331 }
332
333 /*
334 * @see dwtx.jface.text.ITextHoverExtension2#getHoverInfo2(dwtx.jface.text.ITextViewer, dwtx.jface.text.IRegion)
335 */
336 public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion) {
337 return fHyperlinks;
338 }
339
340 /*
341 * @see dwtx.jface.text.ITextHoverExtension#getHoverControlCreator()
342 */
343 public IInformationControlCreator getHoverControlCreator() {
344 return new IInformationControlCreator() {
345 public IInformationControl createInformationControl(Shell parent) {
346 Color foregroundColor= fTextViewer.getTextWidget().getForeground();
347 Color backgroundColor= fTextViewer.getTextWidget().getBackground();
348 return new LinkListInformationControl(parent, fManager, foregroundColor, backgroundColor);
349 }
350 };
351 }
352 }
353
354 private static class MultipleHyperlinkHoverManager : AbstractInformationControlManager , IWidgetTokenKeeper, IWidgetTokenKeeperExtension {
355
356 private class Closer : IInformationControlCloser, Listener, KeyListener {
357
358 private Control fSubjectControl;
359 private Display fDisplay;
360 private IInformationControl fControl;
361 private Rectangle fSubjectArea;
362
363 /*
364 * @see dwtx.jface.text.AbstractInformationControlManager.IInformationControlCloser#setInformationControl(dwtx.jface.text.IInformationControl)
365 */
366 public void setInformationControl(IInformationControl control) {
367 fControl= control;
368 }
369
370 /*
371 * @see dwtx.jface.text.AbstractInformationControlManager.IInformationControlCloser#setSubjectControl(dwt.widgets.Control)
372 */
373 public void setSubjectControl(Control subject) {
374 fSubjectControl= subject;
375 }
376
377 /*
378 * @see dwtx.jface.text.AbstractInformationControlManager.IInformationControlCloser#start(dwt.graphics.Rectangle)
379 */
380 public void start(Rectangle subjectArea) {
381 fSubjectArea= subjectArea;
382
383 fDisplay= fSubjectControl.getDisplay();
384 if (!fDisplay.isDisposed()) {
385 fDisplay.addFilter(DWT.FocusOut, this);
386 fDisplay.addFilter(DWT.MouseMove, this);
387 fTextViewer.getTextWidget().addKeyListener(this);
388 }
389 }
390
391 /*
392 * @see dwtx.jface.text.AbstractInformationControlManager.IInformationControlCloser#stop()
393 */
394 public void stop() {
395 if (fDisplay !is null && !fDisplay.isDisposed()) {
396 fDisplay.removeFilter(DWT.FocusOut, this);
397 fDisplay.removeFilter(DWT.MouseMove, this);
398 fTextViewer.getTextWidget().removeKeyListener(this);
399 }
400
401 fSubjectArea= null;
402 }
403
404 /*
405 * @see dwt.widgets.Listener#handleEvent(dwt.widgets.Event)
406 */
407 public void handleEvent(Event event) {
408 switch (event.type) {
409 case DWT.FocusOut:
410 if (!fControl.isFocusControl())
411 disposeInformationControl();
412 break;
413 case DWT.MouseMove:
414 handleMouseMove(event);
415 break;
416 }
417 }
418
419 /**
420 * Handle mouse movement events.
421 *
422 * @param event the event
423 */
424 private void handleMouseMove(Event event) {
425 if (!(event.widget instanceof Control))
426 return;
427
428 if (fControl.isFocusControl())
429 return;
430
431 Control eventControl= (Control) event.widget;
432
433 //transform coordinates to subject control:
434 Point mouseLoc= event.display.map(eventControl, fSubjectControl, event.x, event.y);
435
436 if (fSubjectArea.contains(mouseLoc))
437 return;
438
439 if (inKeepUpZone(mouseLoc.x, mouseLoc.y, ((IInformationControlExtension3) fControl).getBounds()))
440 return;
441
442 hideInformationControl();
443 }
444
445 /**
446 * Tests whether a given mouse location is within the keep-up zone.
447 * The hover should not be hidden as long as the mouse stays inside this zone.
448 *
449 * @param x the x coordinate, relative to the <em>subject control</em>
450 * @param y the y coordinate, relative to the <em>subject control</em>
451 * @param controlBounds the bounds of the current control
452 *
453 * @return <code>true</code> iff the mouse event occurred in the keep-up zone
454 */
455 private bool inKeepUpZone(int x, int y, Rectangle controlBounds) {
456 // +-----------+
457 // |subjectArea|
458 // +-----------+
459 // |also keepUp|
460 // ++-----------+-------+
461 // | totalBounds |
462 // +--------------------+
463 if (fSubjectArea.contains(x, y))
464 return true;
465
466 Rectangle iControlBounds= fSubjectControl.getDisplay().map(null, fSubjectControl, controlBounds);
467 Rectangle totalBounds= Geometry.copy(iControlBounds);
468 if (totalBounds.contains(x, y))
469 return true;
470
471 int keepUpY= fSubjectArea.y + fSubjectArea.height;
472 Rectangle alsoKeepUp= new Rectangle(fSubjectArea.x, keepUpY, fSubjectArea.width, totalBounds.y - keepUpY);
473 return alsoKeepUp.contains(x, y);
474 }
475
476 /*
477 * @see dwt.events.KeyListener#keyPressed(dwt.events.KeyEvent)
478 */
479 public void keyPressed(KeyEvent e) {
480 }
481
482 /*
483 * @see dwt.events.KeyListener#keyReleased(dwt.events.KeyEvent)
484 */
485 public void keyReleased(KeyEvent e) {
486 hideInformationControl();
487 }
488
489 }
490
491 /**
492 * Priority of the hover managed by this manager.
493 * Default value: One higher then for the hovers
494 * managed by TextViewerHoverManager.
495 */
496 private static final int WIDGET_TOKEN_PRIORITY= 1;
497
498 private final MultipleHyperlinkHover fHover;
499 private final ITextViewer fTextViewer;
500 private final MultipleHyperlinkPresenter fHyperlinkPresenter;
501 private Closer fCloser;
502 private bool fIsControlVisible;
503
504
505 /**
506 * Create a new MultipleHyperlinkHoverManager. The MHHM can show and hide
507 * the given MultipleHyperlinkHover inside the given ITextViewer.
508 *
509 * @param hover the hover to manage
510 * @param viewer the viewer to show the hover in
511 * @param hyperlinkPresenter the hyperlink presenter using this manager to present hyperlinks
512 */
513 public MultipleHyperlinkHoverManager(MultipleHyperlinkHover hover, ITextViewer viewer, MultipleHyperlinkPresenter hyperlinkPresenter) {
514 super(hover.getHoverControlCreator());
515
516 fHover= hover;
517 fTextViewer= viewer;
518 fHyperlinkPresenter= hyperlinkPresenter;
519
520 fCloser= new Closer();
521 setCloser(fCloser);
522 fIsControlVisible= false;
523 }
524
525 /*
526 * @see dwtx.jface.text.AbstractInformationControlManager#computeInformation()
527 */
528 protected void computeInformation() {
529 IRegion region= fHover.getHoverRegion(fTextViewer, -1);
530 if (region is null) {
531 setInformation(null, null);
532 return;
533 }
534
535 Rectangle area= JFaceTextUtil.computeArea(region, fTextViewer);
536 if (area is null || area.isEmpty()) {
537 setInformation(null, null);
538 return;
539 }
540
541 Object information= fHover.getHoverInfo2(fTextViewer, region);
542 setCustomInformationControlCreator(fHover.getHoverControlCreator());
543 setInformation(information, area);
544 }
545
546 /*
547 * @see dwtx.jface.text.AbstractInformationControlManager#computeInformationControlLocation(dwt.graphics.Rectangle, dwt.graphics.Point)
548 */
549 protected Point computeInformationControlLocation(Rectangle subjectArea, Point controlSize) {
550 Point result= super.computeInformationControlLocation(subjectArea, controlSize);
551
552 Point cursorLocation= fTextViewer.getTextWidget().getDisplay().getCursorLocation();
553 if (cursorLocation.x <= result.x + controlSize.x)
554 return result;
555
556 result.x= cursorLocation.x + 20 - controlSize.x;
557 return result;
558 }
559
560 /*
561 * @see dwtx.jface.text.AbstractInformationControlManager#showInformationControl(dwt.graphics.Rectangle)
562 */
563 protected void showInformationControl(Rectangle subjectArea) {
564 if (fTextViewer instanceof IWidgetTokenOwnerExtension) {
565 if (((IWidgetTokenOwnerExtension) fTextViewer).requestWidgetToken(this, WIDGET_TOKEN_PRIORITY))
566 super.showInformationControl(subjectArea);
567 } else if (fTextViewer instanceof IWidgetTokenOwner) {
568 if (((IWidgetTokenOwner) fTextViewer).requestWidgetToken(this))
569 super.showInformationControl(subjectArea);
570 } else {
571 super.showInformationControl(subjectArea);
572 }
573
574 fIsControlVisible= true;
575 }
576
577 /*
578 * @see dwtx.jface.text.AbstractInformationControlManager#hideInformationControl()
579 */
580 protected void hideInformationControl() {
581 super.hideInformationControl();
582
583 if (fTextViewer instanceof IWidgetTokenOwner) {
584 ((IWidgetTokenOwner) fTextViewer).releaseWidgetToken(this);
585 }
586
587 fIsControlVisible= false;
588 fHyperlinkPresenter.hideHyperlinks();
589 }
590
591 /*
592 * @see dwtx.jface.text.AbstractInformationControlManager#disposeInformationControl()
593 */
594 public void disposeInformationControl() {
595 super.disposeInformationControl();
596
597 if (fTextViewer instanceof IWidgetTokenOwner) {
598 ((IWidgetTokenOwner) fTextViewer).releaseWidgetToken(this);
599 }
600
601 fIsControlVisible= false;
602 fHyperlinkPresenter.hideHyperlinks();
603 }
604
605 /*
606 * @see dwtx.jface.text.IWidgetTokenKeeper#requestWidgetToken(dwtx.jface.text.IWidgetTokenOwner)
607 */
608 public bool requestWidgetToken(IWidgetTokenOwner owner) {
609 hideInformationControl();
610 return true;
611 }
612
613 /*
614 * @see dwtx.jface.text.IWidgetTokenKeeperExtension#requestWidgetToken(dwtx.jface.text.IWidgetTokenOwner, int)
615 */
616 public bool requestWidgetToken(IWidgetTokenOwner owner, int priority) {
617 if (priority < WIDGET_TOKEN_PRIORITY)
618 return false;
619
620 hideInformationControl();
621 return true;
622 }
623
624 /*
625 * @see dwtx.jface.text.IWidgetTokenKeeperExtension#setFocus(dwtx.jface.text.IWidgetTokenOwner)
626 */
627 public bool setFocus(IWidgetTokenOwner owner) {
628 return false;
629 }
630
631 /**
632 * Returns <code>true</code> if the information control managed by
633 * this manager is visible, <code>false</code> otherwise.
634 *
635 * @return <code>true</code> if information control is visible
636 */
637 public bool isInformationControlVisible() {
638 return fIsControlVisible;
639 }
640 }
641
642 private ITextViewer fTextViewer;
643
644 private IHyperlink[] fHyperlinks;
645 private Region fSubjectRegion;
646 private MultipleHyperlinkHoverManager fManager;
647
648 /**
649 * Creates a new multiple hyperlink presenter which uses
650 * {@link #HYPERLINK_COLOR} to read the color from the given preference store.
651 *
652 * @param store the preference store
653 */
654 public MultipleHyperlinkPresenter(IPreferenceStore store) {
655 super(store);
656 }
657
658 /**
659 * Creates a new multiple hyperlink presenter.
660 *
661 * @param color the hyperlink color, to be disposed by the caller
662 */
663 public MultipleHyperlinkPresenter(RGB color) {
664 super(color);
665 }
666
667 /*
668 * @see dwtx.jface.text.hyperlink.DefaultHyperlinkPresenter#install(dwtx.jface.text.ITextViewer)
669 */
670 public void install(ITextViewer viewer) {
671 super.install(viewer);
672 fTextViewer= viewer;
673
674 fManager= new MultipleHyperlinkHoverManager(new MultipleHyperlinkHover(), fTextViewer, this);
675 fManager.install(viewer.getTextWidget());
676 fManager.setSizeConstraints(100, 12, false, true);
677 }
678
679 /*
680 * @see dwtx.jface.text.hyperlink.DefaultHyperlinkPresenter#uninstall()
681 */
682 public void uninstall() {
683 super.uninstall();
684
685 if (fTextViewer !is null) {
686 fManager.dispose();
687
688 fTextViewer= null;
689 }
690 }
691
692 /*
693 * @see dwtx.jface.text.hyperlink.DefaultHyperlinkPresenter#canShowMultipleHyperlinks()
694 */
695 public bool canShowMultipleHyperlinks() {
696 return true;
697 }
698
699 /*
700 * @see dwtx.jface.text.hyperlink.DefaultHyperlinkPresenter#canHideHyperlinks()
701 */
702 public bool canHideHyperlinks() {
703 return !fManager.isInformationControlVisible();
704 }
705
706 /*
707 * @see dwtx.jface.text.hyperlink.DefaultHyperlinkPresenter#hideHyperlinks()
708 */
709 public void hideHyperlinks() {
710 super.hideHyperlinks();
711
712 fHyperlinks= null;
713 }
714
715 /*
716 * @see dwtx.jface.text.hyperlink.DefaultHyperlinkPresenter#showHyperlinks(dwtx.jface.text.hyperlink.IHyperlink[])
717 */
718 public void showHyperlinks(IHyperlink[] hyperlinks) {
719 super.showHyperlinks(new IHyperlink[] { hyperlinks[0] });
720
721 fSubjectRegion= null;
722 fHyperlinks= hyperlinks;
723
724 if (hyperlinks.length is 1)
725 return;
726
727 int start= hyperlinks[0].getHyperlinkRegion().getOffset();
728 int end= start + hyperlinks[0].getHyperlinkRegion().getLength();
729
730 for (int i= 1; i < hyperlinks.length; i++) {
731 int hstart= hyperlinks[i].getHyperlinkRegion().getOffset();
732 int hend= hstart + hyperlinks[i].getHyperlinkRegion().getLength();
733
734 start= Math.min(start, hstart);
735 end= Math.max(end, hend);
736 }
737
738 fSubjectRegion= new Region(start, end - start);
739
740 fManager.showInformation();
741 }
742 }