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39
40 #include <QtGui/qtguiglobal.h>
41
42 #ifndef QT_NO_ACCESSIBILITY
43 #ifndef QACCESSIBLE_H
44 #define QACCESSIBLE_H
45
46 #include <QtCore/qcoreapplication.h>
47 #include <QtCore/qdebug.h>
48 #include <QtCore/qglobal.h>
49 #include <QtCore/qobject.h>
50 #include <QtCore/qrect.h>
51 #include <QtCore/qset.h>
52 #include <QtCore/qvector.h>
53 #include <QtCore/qvariant.h>
54 #include <QtGui/qcolor.h>
55 #include <QtGui/qevent.h>
56
57 #include <stdlib.h>
58
59 QT_BEGIN_NAMESPACE
60
61 class QAccessibleInterface;
62 class QAccessibleEvent;
63 class QWindow;
64 class QTextCursor;
65
66 class Q_GUI_EXPORT QAccessible
67 {
68 Q_GADGET
69 public:
70
71 enum Event {
72 SoundPlayed = 0x0001,
73 Alert = 0x0002,
74 ForegroundChanged = 0x0003,
75 MenuStart = 0x0004,
76 MenuEnd = 0x0005,
77 PopupMenuStart = 0x0006,
78 PopupMenuEnd = 0x0007,
79 ContextHelpStart = 0x000C,
80 ContextHelpEnd = 0x000D,
81 DragDropStart = 0x000E,
82 DragDropEnd = 0x000F,
83 DialogStart = 0x0010,
84 DialogEnd = 0x0011,
85 ScrollingStart = 0x0012,
86 ScrollingEnd = 0x0013,
87
88 MenuCommand = 0x0018,
89
90 // Values from IAccessible2
91 ActionChanged = 0x0101,
92 ActiveDescendantChanged = 0x0102,
93 AttributeChanged = 0x0103,
94 DocumentContentChanged = 0x0104,
95 DocumentLoadComplete = 0x0105,
96 DocumentLoadStopped = 0x0106,
97 DocumentReload = 0x0107,
98 HyperlinkEndIndexChanged = 0x0108,
99 HyperlinkNumberOfAnchorsChanged = 0x0109,
100 HyperlinkSelectedLinkChanged = 0x010A,
101 HypertextLinkActivated = 0x010B,
102 HypertextLinkSelected = 0x010C,
103 HyperlinkStartIndexChanged = 0x010D,
104 HypertextChanged = 0x010E,
105 HypertextNLinksChanged = 0x010F,
106 ObjectAttributeChanged = 0x0110,
107 PageChanged = 0x0111,
108 SectionChanged = 0x0112,
109 TableCaptionChanged = 0x0113,
110 TableColumnDescriptionChanged = 0x0114,
111 TableColumnHeaderChanged = 0x0115,
112 TableModelChanged = 0x0116,
113 TableRowDescriptionChanged = 0x0117,
114 TableRowHeaderChanged = 0x0118,
115 TableSummaryChanged = 0x0119,
116 TextAttributeChanged = 0x011A,
117 TextCaretMoved = 0x011B,
118 // TextChanged = 0x011C, is deprecated in IA2, use TextUpdated
119 TextColumnChanged = 0x011D,
120 TextInserted = 0x011E,
121 TextRemoved = 0x011F,
122 TextUpdated = 0x0120,
123 TextSelectionChanged = 0x0121,
124 VisibleDataChanged = 0x0122,
125
126 ObjectCreated = 0x8000,
127 ObjectDestroyed = 0x8001,
128 ObjectShow = 0x8002,
129 ObjectHide = 0x8003,
130 ObjectReorder = 0x8004,
131 Focus = 0x8005,
132 Selection = 0x8006,
133 SelectionAdd = 0x8007,
134 SelectionRemove = 0x8008,
135 SelectionWithin = 0x8009,
136 StateChanged = 0x800A,
137 LocationChanged = 0x800B,
138 NameChanged = 0x800C,
139 DescriptionChanged = 0x800D,
140 ValueChanged = 0x800E,
141 ParentChanged = 0x800F,
142 HelpChanged = 0x80A0,
143 DefaultActionChanged = 0x80B0,
144 AcceleratorChanged = 0x80C0,
145
146 InvalidEvent
147 };
148 Q_ENUM(Event)
149
150 // 64 bit enums seem hard on some platforms (windows...)
151 // which makes using a bit field a sensible alternative
152 struct State {
153 // http://msdn.microsoft.com/en-us/library/ms697270.aspx
154 quint64 disabled : 1; // used to be Unavailable
155 quint64 selected : 1;
156 quint64 focusable : 1;
157 quint64 focused : 1;
158 quint64 pressed : 1;
159 quint64 checkable : 1;
160 quint64 checked : 1;
161 quint64 checkStateMixed : 1; // used to be Mixed
162 quint64 readOnly : 1;
163 quint64 hotTracked : 1;
164 quint64 defaultButton : 1;
165 quint64 expanded : 1;
166 quint64 collapsed : 1;
167 quint64 busy : 1;
168 quint64 expandable : 1;
169 quint64 marqueed : 1;
170 quint64 animated : 1;
171 quint64 invisible : 1;
172 quint64 offscreen : 1;
173 quint64 sizeable : 1;
174 quint64 movable : 1;
175 quint64 selfVoicing : 1;
176 quint64 selectable : 1;
177 quint64 linked : 1;
178 quint64 traversed : 1;
179 quint64 multiSelectable : 1;
180 quint64 extSelectable : 1;
181 quint64 passwordEdit : 1; // used to be Protected
182 quint64 hasPopup : 1;
183 quint64 modal : 1;
184
185 // IA2 - we chose to not add some IA2 states for now
186 // Below the ones that seem helpful
187 quint64 active : 1;
188 quint64 invalid : 1; // = defunct
189 quint64 editable : 1;
190 quint64 multiLine : 1;
191 quint64 selectableText : 1;
192 quint64 supportsAutoCompletion : 1;
193
194 quint64 searchEdit : 1;
195
196 // quint64 horizontal : 1;
197 // quint64 vertical : 1;
198 // quint64 invalidEntry : 1;
199 // quint64 managesDescendants : 1;
200 // quint64 singleLine : 1; // we have multi line, this is redundant.
201 // quint64 stale : 1;
202 // quint64 transient : 1;
203 // quint64 pinned : 1;
204
205 // Apple - see http://mattgemmell.com/2010/12/19/accessibility-for-iphone-and-ipad-apps/
206 // quint64 playsSound : 1;
207 // quint64 summaryElement : 1;
208 // quint64 updatesFrequently : 1;
209 // quint64 adjustable : 1;
210 // more and not included here: http://developer.apple.com/library/mac/#documentation/UserExperience/Reference/Accessibility_RoleAttribute_Ref/Attributes.html
211
212 // MSAA
213 // quint64 alertLow : 1;
214 // quint64 alertMedium : 1;
215 // quint64 alertHigh : 1;
216
StateState217 State() {
218 memset(this, 0, sizeof(State));
219 }
220 };
221
222
223
224
225
226 enum Role {
227 NoRole = 0x00000000,
228 TitleBar = 0x00000001,
229 MenuBar = 0x00000002,
230 ScrollBar = 0x00000003,
231 Grip = 0x00000004,
232 Sound = 0x00000005,
233 Cursor = 0x00000006,
234 Caret = 0x00000007,
235 AlertMessage = 0x00000008,
236 Window = 0x00000009,
237 Client = 0x0000000A,
238 PopupMenu = 0x0000000B,
239 MenuItem = 0x0000000C,
240 ToolTip = 0x0000000D,
241 Application = 0x0000000E,
242 Document = 0x0000000F,
243 Pane = 0x00000010,
244 Chart = 0x00000011,
245 Dialog = 0x00000012,
246 Border = 0x00000013,
247 Grouping = 0x00000014,
248 Separator = 0x00000015,
249 ToolBar = 0x00000016,
250 StatusBar = 0x00000017,
251 Table = 0x00000018,
252 ColumnHeader = 0x00000019,
253 RowHeader = 0x0000001A,
254 Column = 0x0000001B,
255 Row = 0x0000001C,
256 Cell = 0x0000001D,
257 Link = 0x0000001E,
258 HelpBalloon = 0x0000001F,
259 Assistant = 0x00000020,
260 List = 0x00000021,
261 ListItem = 0x00000022,
262 Tree = 0x00000023,
263 TreeItem = 0x00000024,
264 PageTab = 0x00000025,
265 PropertyPage = 0x00000026,
266 Indicator = 0x00000027,
267 Graphic = 0x00000028,
268 StaticText = 0x00000029,
269 EditableText = 0x0000002A, // Editable, selectable, etc.
270 Button = 0x0000002B,
271 #ifndef Q_QDOC
272 PushButton = Button, // deprecated
273 #endif
274 CheckBox = 0x0000002C,
275 RadioButton = 0x0000002D,
276 ComboBox = 0x0000002E,
277 // DropList = 0x0000002F,
278 ProgressBar = 0x00000030,
279 Dial = 0x00000031,
280 HotkeyField = 0x00000032,
281 Slider = 0x00000033,
282 SpinBox = 0x00000034,
283 Canvas = 0x00000035, // MSAA: ROLE_SYSTEM_DIAGRAM - The object represents a graphical image that is used to diagram data.
284 Animation = 0x00000036,
285 Equation = 0x00000037,
286 ButtonDropDown = 0x00000038, // The object represents a button that expands a grid.
287 ButtonMenu = 0x00000039,
288 ButtonDropGrid = 0x0000003A,
289 Whitespace = 0x0000003B, // The object represents blank space between other objects.
290 PageTabList = 0x0000003C,
291 Clock = 0x0000003D,
292 Splitter = 0x0000003E,
293 // Reserved space in case MSAA roles needs to be added
294
295 // Additional Qt roles where enum value does not map directly to MSAA:
296 LayeredPane = 0x00000080,
297 Terminal = 0x00000081,
298 Desktop = 0x00000082,
299 Paragraph = 0x00000083,
300 WebDocument = 0x00000084,
301 Section = 0x00000085,
302 Notification = 0x00000086,
303
304 // IAccessible2 roles
305 // IA2_ROLE_CANVAS = 0x401, // An object that can be drawn into and to manage events from the objects drawn into it
306 // IA2_ROLE_CAPTION = 0x402,
307 // IA2_ROLE_CHECK_MENU_ITEM = 0x403,
308 ColorChooser = 0x404,
309 // IA2_ROLE_DATE_EDITOR = 0x405,
310 // IA2_ROLE_DESKTOP_ICON = 0x406,
311 // IA2_ROLE_DESKTOP_PANE = 0x407,
312 // IA2_ROLE_DIRECTORY_PANE = 0x408,
313 // IA2_ROLE_EDITBAR = 0x409,
314 // IA2_ROLE_EMBEDDED_OBJECT = 0x40A,
315 // IA2_ROLE_ENDNOTE = 0x40B,
316 // IA2_ROLE_FILE_CHOOSER = 0x40C,
317 // IA2_ROLE_FONT_CHOOSER = 0x40D,
318 Footer = 0x40E,
319 // IA2_ROLE_FOOTNOTE = 0x40F,
320 Form = 0x410,
321 // some platforms (windows and at-spi) use Frame for regular windows
322 // because window was taken for tool/dock windows by MSAA
323 // Frame = 0x411,
324 // IA2_ROLE_GLASS_PANE = 0x412,
325 // IA2_ROLE_HEADER = 0x413,
326 Heading = 0x414,
327 // IA2_ROLE_ICON = 0x415,
328 // IA2_ROLE_IMAGE_MAP = 0x416,
329 // IA2_ROLE_INPUT_METHOD_WINDOW = 0x417,
330 // IA2_ROLE_INTERNAL_FRAME = 0x418,
331 // IA2_ROLE_LABEL = 0x419,
332 // IA2_ROLE_LAYERED_PANE = 0x41A,
333 Note = 0x41B,
334 // IA2_ROLE_OPTION_PANE = 0x41C,
335 // IA2_ROLE_PAGE = 0x41D,
336 // IA2_ROLE_PARAGRAPH = 0x42E,
337 // IA2_ROLE_RADIO_MENU_ITEM = 0x41F,
338 // IA2_ROLE_REDUNDANT_OBJECT = 0x420,
339 // IA2_ROLE_ROOT_PANE = 0x421,
340 // IA2_ROLE_RULER = 0x422,
341 // IA2_ROLE_SCROLL_PANE = 0x423,
342 // IA2_ROLE_SECTION = 0x424,
343 // IA2_ROLE_SHAPE = 0x425,
344 // IA2_ROLE_SPLIT_PANE = 0x426,
345 // IA2_ROLE_TEAR_OFF_MENU = 0x427,
346 // IA2_ROLE_TERMINAL = 0x428,
347 // IA2_ROLE_TEXT_FRAME = 0x429,
348 // IA2_ROLE_TOGGLE_BUTTON = 0x42A,
349 // IA2_ROLE_VIEW_PORT = 0x42B,
350 ComplementaryContent = 0x42C,
351
352 UserRole = 0x0000ffff
353 };
354 Q_ENUM(Role)
355
356 enum Text {
357 Name = 0,
358 Description,
359 Value,
360 Help,
361 Accelerator,
362 DebugDescription,
363 UserText = 0x0000ffff
364 };
365
366 enum RelationFlag {
367 Label = 0x00000001,
368 Labelled = 0x00000002,
369 Controller = 0x00000004,
370 Controlled = 0x00000008,
371 AllRelations = 0xffffffff
372 };
373 Q_DECLARE_FLAGS(Relation, RelationFlag)
374
375 enum InterfaceType
376 {
377 TextInterface,
378 EditableTextInterface,
379 ValueInterface,
380 ActionInterface,
381 ImageInterface,
382 TableInterface,
383 TableCellInterface
384 };
385
386 enum TextBoundaryType {
387 CharBoundary,
388 WordBoundary,
389 SentenceBoundary,
390 ParagraphBoundary,
391 LineBoundary,
392 NoBoundary
393 };
394
395 typedef QAccessibleInterface*(*InterfaceFactory)(const QString &key, QObject*);
396 typedef void(*UpdateHandler)(QAccessibleEvent *event);
397 typedef void(*RootObjectHandler)(QObject*);
398
399 typedef unsigned Id;
400
401 static void installFactory(InterfaceFactory);
402 static void removeFactory(InterfaceFactory);
403 static UpdateHandler installUpdateHandler(UpdateHandler);
404 static RootObjectHandler installRootObjectHandler(RootObjectHandler);
405
406 class Q_GUI_EXPORT ActivationObserver
407 {
408 public:
409 virtual ~ActivationObserver();
410 virtual void accessibilityActiveChanged(bool active) = 0;
411 };
412 static void installActivationObserver(ActivationObserver *);
413 static void removeActivationObserver(ActivationObserver *);
414
415 static QAccessibleInterface *queryAccessibleInterface(QObject *);
416 static Id uniqueId(QAccessibleInterface *iface);
417 static QAccessibleInterface *accessibleInterface(Id uniqueId);
418 static Id registerAccessibleInterface(QAccessibleInterface *iface);
419 static void deleteAccessibleInterface(Id uniqueId);
420
421
422 #if QT_DEPRECATED_SINCE(5, 0)
423 QT_DEPRECATED static inline void updateAccessibility(QObject *object, int child, Event reason);
424 #endif
425 static void updateAccessibility(QAccessibleEvent *event);
426
427 static bool isActive();
428 static void setActive(bool active);
429 static void setRootObject(QObject *object);
430
431 static void cleanup();
432
433 static QPair< int, int > qAccessibleTextBoundaryHelper(const QTextCursor &cursor, TextBoundaryType boundaryType);
434
435 private:
436 static UpdateHandler updateHandler;
437 static RootObjectHandler rootObjectHandler;
438
QAccessible()439 QAccessible() {}
440
441 friend class QAccessibleCache;
442 };
443
444 Q_GUI_EXPORT bool operator==(const QAccessible::State &first, const QAccessible::State &second);
445
446 Q_DECLARE_OPERATORS_FOR_FLAGS(QAccessible::Relation)
447
448 class QAccessible2Interface;
449 class QAccessibleTextInterface;
450 class QAccessibleEditableTextInterface;
451 class QAccessibleValueInterface;
452 class QAccessibleActionInterface;
453 class QAccessibleImageInterface;
454 class QAccessibleTableInterface;
455 class QAccessibleTableCellInterface;
456 class QAccessibleTableModelChangeEvent;
457
458 class Q_GUI_EXPORT QAccessibleInterface
459 {
460 protected:
461 virtual ~QAccessibleInterface();
462
463 public:
464 // check for valid pointers
465 virtual bool isValid() const = 0;
466 virtual QObject *object() const = 0;
467 virtual QWindow *window() const;
468
469 // relations
470 virtual QVector<QPair<QAccessibleInterface*, QAccessible::Relation> > relations(QAccessible::Relation match = QAccessible::AllRelations) const;
471 virtual QAccessibleInterface *focusChild() const;
472
473 virtual QAccessibleInterface *childAt(int x, int y) const = 0;
474
475 // navigation, hierarchy
476 virtual QAccessibleInterface *parent() const = 0;
477 virtual QAccessibleInterface *child(int index) const = 0;
478 virtual int childCount() const = 0;
479 virtual int indexOfChild(const QAccessibleInterface *) const = 0;
480
481 // properties and state
482 virtual QString text(QAccessible::Text t) const = 0;
483 virtual void setText(QAccessible::Text t, const QString &text) = 0;
484 virtual QRect rect() const = 0;
485 virtual QAccessible::Role role() const = 0;
486 virtual QAccessible::State state() const = 0;
487
488 virtual QColor foregroundColor() const;
489 virtual QColor backgroundColor() const;
490
textInterface()491 inline QAccessibleTextInterface *textInterface()
492 { return reinterpret_cast<QAccessibleTextInterface *>(interface_cast(QAccessible::TextInterface)); }
493
editableTextInterface()494 inline QAccessibleEditableTextInterface *editableTextInterface()
495 { return reinterpret_cast<QAccessibleEditableTextInterface *>(interface_cast(QAccessible::EditableTextInterface)); }
496
valueInterface()497 inline QAccessibleValueInterface *valueInterface()
498 { return reinterpret_cast<QAccessibleValueInterface *>(interface_cast(QAccessible::ValueInterface)); }
499
actionInterface()500 inline QAccessibleActionInterface *actionInterface()
501 { return reinterpret_cast<QAccessibleActionInterface *>(interface_cast(QAccessible::ActionInterface)); }
502
imageInterface()503 inline QAccessibleImageInterface *imageInterface()
504 { return reinterpret_cast<QAccessibleImageInterface *>(interface_cast(QAccessible::ImageInterface)); }
505
tableInterface()506 inline QAccessibleTableInterface *tableInterface()
507 { return reinterpret_cast<QAccessibleTableInterface *>(interface_cast(QAccessible::TableInterface)); }
508
tableCellInterface()509 inline QAccessibleTableCellInterface *tableCellInterface()
510 { return reinterpret_cast<QAccessibleTableCellInterface *>(interface_cast(QAccessible::TableCellInterface)); }
511
512 virtual void virtual_hook(int id, void *data);
513
interface_cast(QAccessible::InterfaceType)514 virtual void *interface_cast(QAccessible::InterfaceType)
515 { return nullptr; }
516
517 protected:
518 friend class QAccessibleCache;
519 };
520
521 class Q_GUI_EXPORT QAccessibleTextInterface
522 {
523 public:
524 virtual ~QAccessibleTextInterface();
525 // selection
526 virtual void selection(int selectionIndex, int *startOffset, int *endOffset) const = 0;
527 virtual int selectionCount() const = 0;
528 virtual void addSelection(int startOffset, int endOffset) = 0;
529 virtual void removeSelection(int selectionIndex) = 0;
530 virtual void setSelection(int selectionIndex, int startOffset, int endOffset) = 0;
531
532 // cursor
533 virtual int cursorPosition() const = 0;
534 virtual void setCursorPosition(int position) = 0;
535
536 // text
537 virtual QString text(int startOffset, int endOffset) const = 0;
538 virtual QString textBeforeOffset(int offset, QAccessible::TextBoundaryType boundaryType,
539 int *startOffset, int *endOffset) const;
540 virtual QString textAfterOffset(int offset, QAccessible::TextBoundaryType boundaryType,
541 int *startOffset, int *endOffset) const;
542 virtual QString textAtOffset(int offset, QAccessible::TextBoundaryType boundaryType,
543 int *startOffset, int *endOffset) const;
544 virtual int characterCount() const = 0;
545
546 // character <-> geometry
547 virtual QRect characterRect(int offset) const = 0;
548 virtual int offsetAtPoint(const QPoint &point) const = 0;
549
550 virtual void scrollToSubstring(int startIndex, int endIndex) = 0;
551 virtual QString attributes(int offset, int *startOffset, int *endOffset) const = 0;
552 };
553
554 class Q_GUI_EXPORT QAccessibleEditableTextInterface
555 {
556 public:
557 virtual ~QAccessibleEditableTextInterface();
558
559 virtual void deleteText(int startOffset, int endOffset) = 0;
560 virtual void insertText(int offset, const QString &text) = 0;
561 virtual void replaceText(int startOffset, int endOffset, const QString &text) = 0;
562 };
563
564 class Q_GUI_EXPORT QAccessibleValueInterface
565 {
566 public:
567 virtual ~QAccessibleValueInterface();
568
569 virtual QVariant currentValue() const = 0;
570 virtual void setCurrentValue(const QVariant &value) = 0;
571 virtual QVariant maximumValue() const = 0;
572 virtual QVariant minimumValue() const = 0;
573 virtual QVariant minimumStepSize() const = 0;
574 };
575
576 class Q_GUI_EXPORT QAccessibleTableCellInterface
577 {
578 public:
579 virtual ~QAccessibleTableCellInterface();
580
581 virtual bool isSelected() const = 0;
582
583 virtual QList<QAccessibleInterface*> columnHeaderCells() const = 0;
584 virtual QList<QAccessibleInterface*> rowHeaderCells() const = 0;
585 virtual int columnIndex() const = 0;
586 virtual int rowIndex() const = 0;
587 virtual int columnExtent() const = 0;
588 virtual int rowExtent() const = 0;
589
590 virtual QAccessibleInterface* table() const = 0;
591 };
592
593 class Q_GUI_EXPORT QAccessibleTableInterface
594 {
595 public:
596 virtual ~QAccessibleTableInterface();
597
598 virtual QAccessibleInterface *caption() const = 0;
599 virtual QAccessibleInterface *summary() const = 0;
600
601 virtual QAccessibleInterface *cellAt (int row, int column) const = 0;
602 virtual int selectedCellCount() const = 0;
603 virtual QList<QAccessibleInterface*> selectedCells() const = 0;
604
605 virtual QString columnDescription(int column) const = 0;
606 virtual QString rowDescription(int row) const = 0;
607 virtual int selectedColumnCount() const = 0;
608 virtual int selectedRowCount() const = 0;
609 virtual int columnCount() const = 0;
610 virtual int rowCount() const = 0;
611 virtual QList<int> selectedColumns() const = 0;
612 virtual QList<int> selectedRows() const = 0;
613 virtual bool isColumnSelected(int column) const = 0;
614 virtual bool isRowSelected(int row) const = 0;
615 virtual bool selectRow(int row) = 0;
616 virtual bool selectColumn(int column) = 0;
617 virtual bool unselectRow(int row) = 0;
618 virtual bool unselectColumn(int column) = 0;
619
620 virtual void modelChange(QAccessibleTableModelChangeEvent *event) = 0;
621
622 protected:
623 friend class QAbstractItemView;
624 friend class QAbstractItemViewPrivate;
625 };
626
627 class Q_GUI_EXPORT QAccessibleActionInterface
628 {
629 Q_DECLARE_TR_FUNCTIONS(QAccessibleActionInterface)
630 public:
631 virtual ~QAccessibleActionInterface();
632
633 virtual QStringList actionNames() const = 0;
634 virtual QString localizedActionName(const QString &name) const;
635 virtual QString localizedActionDescription(const QString &name) const;
636 virtual void doAction(const QString &actionName) = 0;
637 virtual QStringList keyBindingsForAction(const QString &actionName) const = 0;
638
639 static const QString &pressAction();
640 static const QString &increaseAction();
641 static const QString &decreaseAction();
642 static const QString &showMenuAction();
643 static const QString &setFocusAction();
644 static const QString &toggleAction();
645 static QString scrollLeftAction();
646 static QString scrollRightAction();
647 static QString scrollUpAction();
648 static QString scrollDownAction();
649 static QString nextPageAction();
650 static QString previousPageAction();
651 };
652
653 class Q_GUI_EXPORT QAccessibleImageInterface
654 {
655 public:
656 virtual ~QAccessibleImageInterface();
657
658 virtual QString imageDescription() const = 0;
659 virtual QSize imageSize() const = 0;
660 virtual QPoint imagePosition() const = 0;
661 };
662
663
664 class Q_GUI_EXPORT QAccessibleEvent
665 {
Q_DISABLE_COPY(QAccessibleEvent)666 Q_DISABLE_COPY(QAccessibleEvent)
667 public:
668
669 inline QAccessibleEvent(QObject *obj, QAccessible::Event typ)
670 : m_type(typ), m_object(obj), m_child(-1)
671 {
672 Q_ASSERT(obj);
673 // All events below have a subclass of QAccessibleEvent.
674 // Use the subclass, since it's expected that it's possible to cast to that.
675 Q_ASSERT(m_type != QAccessible::ValueChanged);
676 Q_ASSERT(m_type != QAccessible::StateChanged);
677 Q_ASSERT(m_type != QAccessible::TextCaretMoved);
678 Q_ASSERT(m_type != QAccessible::TextSelectionChanged);
679 Q_ASSERT(m_type != QAccessible::TextInserted);
680 Q_ASSERT(m_type != QAccessible::TextRemoved);
681 Q_ASSERT(m_type != QAccessible::TextUpdated);
682 Q_ASSERT(m_type != QAccessible::TableModelChanged);
683 }
684
QAccessibleEvent(QAccessibleInterface * iface,QAccessible::Event typ)685 inline QAccessibleEvent(QAccessibleInterface *iface, QAccessible::Event typ)
686 : m_type(typ), m_object(nullptr)
687 {
688 Q_ASSERT(iface);
689 Q_ASSERT(m_type != QAccessible::ValueChanged);
690 Q_ASSERT(m_type != QAccessible::StateChanged);
691 Q_ASSERT(m_type != QAccessible::TextCaretMoved);
692 Q_ASSERT(m_type != QAccessible::TextSelectionChanged);
693 Q_ASSERT(m_type != QAccessible::TextInserted);
694 Q_ASSERT(m_type != QAccessible::TextRemoved);
695 Q_ASSERT(m_type != QAccessible::TextUpdated);
696 Q_ASSERT(m_type != QAccessible::TableModelChanged);
697 m_uniqueId = QAccessible::uniqueId(iface);
698 }
699
700 virtual ~QAccessibleEvent();
701
type()702 QAccessible::Event type() const { return m_type; }
object()703 QObject *object() const { return m_object; }
704 QAccessible::Id uniqueId() const;
705
setChild(int chld)706 void setChild(int chld) { m_child = chld; }
child()707 int child() const { return m_child; }
708
709 virtual QAccessibleInterface *accessibleInterface() const;
710
711 protected:
712 QAccessible::Event m_type;
713 QObject *m_object;
714 union {
715 int m_child;
716 QAccessible::Id m_uniqueId;
717 };
718
719 };
720
721 class Q_GUI_EXPORT QAccessibleStateChangeEvent :public QAccessibleEvent
722 {
723 public:
QAccessibleStateChangeEvent(QObject * obj,QAccessible::State state)724 inline QAccessibleStateChangeEvent(QObject *obj, QAccessible::State state)
725 : QAccessibleEvent(obj, QAccessible::InvalidEvent), m_changedStates(state)
726 {
727 m_type = QAccessible::StateChanged;
728 }
QAccessibleStateChangeEvent(QAccessibleInterface * iface,QAccessible::State state)729 inline QAccessibleStateChangeEvent(QAccessibleInterface *iface, QAccessible::State state)
730 : QAccessibleEvent(iface, QAccessible::InvalidEvent), m_changedStates(state)
731 {
732 m_type = QAccessible::StateChanged;
733 }
734 ~QAccessibleStateChangeEvent();
735
changedStates()736 QAccessible::State changedStates() const {
737 return m_changedStates;
738 }
739
740 protected:
741 QAccessible::State m_changedStates;
742 };
743
744 // Update the cursor and optionally the selection.
745 class Q_GUI_EXPORT QAccessibleTextCursorEvent : public QAccessibleEvent
746 {
747 public:
QAccessibleTextCursorEvent(QObject * obj,int cursorPos)748 inline QAccessibleTextCursorEvent(QObject *obj, int cursorPos)
749 : QAccessibleEvent(obj, QAccessible::InvalidEvent)
750 , m_cursorPosition(cursorPos)
751 {
752 m_type = QAccessible::TextCaretMoved;
753 }
QAccessibleTextCursorEvent(QAccessibleInterface * iface,int cursorPos)754 inline QAccessibleTextCursorEvent(QAccessibleInterface *iface, int cursorPos)
755 : QAccessibleEvent(iface, QAccessible::InvalidEvent)
756 , m_cursorPosition(cursorPos)
757 {
758 m_type = QAccessible::TextCaretMoved;
759 }
760
761 ~QAccessibleTextCursorEvent();
762
setCursorPosition(int position)763 void setCursorPosition(int position) { m_cursorPosition = position; }
cursorPosition()764 int cursorPosition() const { return m_cursorPosition; }
765
766 protected:
767 int m_cursorPosition;
768 };
769
770 // Updates the cursor position simultaneously. By default the cursor is set to the end of the selection.
771 class Q_GUI_EXPORT QAccessibleTextSelectionEvent : public QAccessibleTextCursorEvent
772 {
773 public:
QAccessibleTextSelectionEvent(QObject * obj,int start,int end)774 inline QAccessibleTextSelectionEvent(QObject *obj, int start, int end)
775 : QAccessibleTextCursorEvent(obj, (start == -1) ? 0 : end)
776 , m_selectionStart(start), m_selectionEnd(end)
777 {
778 m_type = QAccessible::TextSelectionChanged;
779 }
QAccessibleTextSelectionEvent(QAccessibleInterface * iface,int start,int end)780 inline QAccessibleTextSelectionEvent(QAccessibleInterface *iface, int start, int end)
781 : QAccessibleTextCursorEvent(iface, (start == -1) ? 0 : end)
782 , m_selectionStart(start), m_selectionEnd(end)
783 {
784 m_type = QAccessible::TextSelectionChanged;
785 }
786
787 ~QAccessibleTextSelectionEvent();
788
setSelection(int start,int end)789 void setSelection(int start, int end) {
790 m_selectionStart = start;
791 m_selectionEnd = end;
792 }
793
selectionStart()794 int selectionStart() const { return m_selectionStart; }
selectionEnd()795 int selectionEnd() const { return m_selectionEnd; }
796
797 protected:
798 int m_selectionStart;
799 int m_selectionEnd;
800 };
801
802 class Q_GUI_EXPORT QAccessibleTextInsertEvent : public QAccessibleTextCursorEvent
803 {
804 public:
QAccessibleTextInsertEvent(QObject * obj,int position,const QString & text)805 inline QAccessibleTextInsertEvent(QObject *obj, int position, const QString &text)
806 : QAccessibleTextCursorEvent(obj, position + text.length())
807 , m_position(position), m_text(text)
808 {
809 m_type = QAccessible::TextInserted;
810 }
QAccessibleTextInsertEvent(QAccessibleInterface * iface,int position,const QString & text)811 inline QAccessibleTextInsertEvent(QAccessibleInterface *iface, int position, const QString &text)
812 : QAccessibleTextCursorEvent(iface, position + text.length())
813 , m_position(position), m_text(text)
814 {
815 m_type = QAccessible::TextInserted;
816 }
817
818 ~QAccessibleTextInsertEvent();
819
textInserted()820 QString textInserted() const {
821 return m_text;
822 }
changePosition()823 int changePosition() const {
824 return m_position;
825 }
826
827 protected:
828 int m_position;
829 QString m_text;
830 };
831
832 class Q_GUI_EXPORT QAccessibleTextRemoveEvent : public QAccessibleTextCursorEvent
833 {
834 public:
QAccessibleTextRemoveEvent(QObject * obj,int position,const QString & text)835 inline QAccessibleTextRemoveEvent(QObject *obj, int position, const QString &text)
836 : QAccessibleTextCursorEvent(obj, position)
837 , m_position(position), m_text(text)
838 {
839 m_type = QAccessible::TextRemoved;
840 }
QAccessibleTextRemoveEvent(QAccessibleInterface * iface,int position,const QString & text)841 inline QAccessibleTextRemoveEvent(QAccessibleInterface *iface, int position, const QString &text)
842 : QAccessibleTextCursorEvent(iface, position)
843 , m_position(position), m_text(text)
844 {
845 m_type = QAccessible::TextRemoved;
846 }
847
848 ~QAccessibleTextRemoveEvent();
849
textRemoved()850 QString textRemoved() const {
851 return m_text;
852 }
changePosition()853 int changePosition() const {
854 return m_position;
855 }
856
857 protected:
858 int m_position;
859 QString m_text;
860 };
861
862 class Q_GUI_EXPORT QAccessibleTextUpdateEvent : public QAccessibleTextCursorEvent
863 {
864 public:
QAccessibleTextUpdateEvent(QObject * obj,int position,const QString & oldText,const QString & text)865 inline QAccessibleTextUpdateEvent(QObject *obj, int position, const QString &oldText, const QString &text)
866 : QAccessibleTextCursorEvent(obj, position + text.length())
867 , m_position(position), m_oldText(oldText), m_text(text)
868 {
869 m_type = QAccessible::TextUpdated;
870 }
QAccessibleTextUpdateEvent(QAccessibleInterface * iface,int position,const QString & oldText,const QString & text)871 inline QAccessibleTextUpdateEvent(QAccessibleInterface *iface, int position, const QString &oldText, const QString &text)
872 : QAccessibleTextCursorEvent(iface, position + text.length())
873 , m_position(position), m_oldText(oldText), m_text(text)
874 {
875 m_type = QAccessible::TextUpdated;
876 }
877
878 ~QAccessibleTextUpdateEvent();
879
textRemoved()880 QString textRemoved() const {
881 return m_oldText;
882 }
textInserted()883 QString textInserted() const {
884 return m_text;
885 }
changePosition()886 int changePosition() const {
887 return m_position;
888 }
889
890 protected:
891 int m_position;
892 QString m_oldText;
893 QString m_text;
894 };
895
896 class Q_GUI_EXPORT QAccessibleValueChangeEvent : public QAccessibleEvent
897 {
898 public:
QAccessibleValueChangeEvent(QObject * obj,const QVariant & val)899 inline QAccessibleValueChangeEvent(QObject *obj, const QVariant &val)
900 : QAccessibleEvent(obj, QAccessible::InvalidEvent)
901 , m_value(val)
902 {
903 m_type = QAccessible::ValueChanged;
904 }
QAccessibleValueChangeEvent(QAccessibleInterface * iface,const QVariant & val)905 inline QAccessibleValueChangeEvent(QAccessibleInterface *iface, const QVariant &val)
906 : QAccessibleEvent(iface, QAccessible::InvalidEvent)
907 , m_value(val)
908 {
909 m_type = QAccessible::ValueChanged;
910 }
911
912 ~QAccessibleValueChangeEvent();
913
setValue(const QVariant & val)914 void setValue(const QVariant & val) { m_value= val; }
value()915 QVariant value() const { return m_value; }
916
917 protected:
918 QVariant m_value;
919 };
920
921 class Q_GUI_EXPORT QAccessibleTableModelChangeEvent : public QAccessibleEvent
922 {
923 public:
924 enum ModelChangeType {
925 ModelReset,
926 DataChanged,
927 RowsInserted,
928 ColumnsInserted,
929 RowsRemoved,
930 ColumnsRemoved
931 };
932
QAccessibleTableModelChangeEvent(QObject * obj,ModelChangeType changeType)933 inline QAccessibleTableModelChangeEvent(QObject *obj, ModelChangeType changeType)
934 : QAccessibleEvent(obj, QAccessible::InvalidEvent)
935 , m_modelChangeType(changeType)
936 , m_firstRow(-1), m_firstColumn(-1), m_lastRow(-1), m_lastColumn(-1)
937 {
938 m_type = QAccessible::TableModelChanged;
939 }
QAccessibleTableModelChangeEvent(QAccessibleInterface * iface,ModelChangeType changeType)940 inline QAccessibleTableModelChangeEvent(QAccessibleInterface *iface, ModelChangeType changeType)
941 : QAccessibleEvent(iface, QAccessible::InvalidEvent)
942 , m_modelChangeType(changeType)
943 , m_firstRow(-1), m_firstColumn(-1), m_lastRow(-1), m_lastColumn(-1)
944 {
945 m_type = QAccessible::TableModelChanged;
946 }
947
948 ~QAccessibleTableModelChangeEvent();
949
setModelChangeType(ModelChangeType changeType)950 void setModelChangeType(ModelChangeType changeType) { m_modelChangeType = changeType; }
modelChangeType()951 ModelChangeType modelChangeType() const { return m_modelChangeType; }
952
setFirstRow(int row)953 void setFirstRow(int row) { m_firstRow = row; }
setFirstColumn(int col)954 void setFirstColumn(int col) { m_firstColumn = col; }
setLastRow(int row)955 void setLastRow(int row) { m_lastRow = row; }
setLastColumn(int col)956 void setLastColumn(int col) { m_lastColumn = col; }
firstRow()957 int firstRow() const { return m_firstRow; }
firstColumn()958 int firstColumn() const { return m_firstColumn; }
lastRow()959 int lastRow() const { return m_lastRow; }
lastColumn()960 int lastColumn() const { return m_lastColumn; }
961
962 protected:
963 ModelChangeType m_modelChangeType;
964 int m_firstRow;
965 int m_firstColumn;
966 int m_lastRow;
967 int m_lastColumn;
968 };
969
970 #ifndef Q_CLANG_QDOC
971 #define QAccessibleInterface_iid "org.qt-project.Qt.QAccessibleInterface"
972 Q_DECLARE_INTERFACE(QAccessibleInterface, QAccessibleInterface_iid)
973 #endif
974
975 Q_GUI_EXPORT const char *qAccessibleRoleString(QAccessible::Role role);
976 Q_GUI_EXPORT const char *qAccessibleEventString(QAccessible::Event event);
977 Q_GUI_EXPORT QString qAccessibleLocalizedActionDescription(const QString &actionName);
978
979 #ifndef QT_NO_DEBUG_STREAM
980 Q_GUI_EXPORT QDebug operator<<(QDebug d, const QAccessibleInterface *iface);
981 Q_GUI_EXPORT QDebug operator<<(QDebug d, const QAccessibleEvent &ev);
982 #endif
983
984 #if QT_DEPRECATED_SINCE(5, 0)
updateAccessibility(QObject * object,int child,Event reason)985 inline void QAccessible::updateAccessibility(QObject *object, int child, Event reason)
986 {
987 Q_ASSERT(object);
988
989 QAccessibleEvent ev(object, reason);
990 ev.setChild(child);
991 updateAccessibility(&ev);
992 }
993 #endif
994
995 QT_END_NAMESPACE
996
997 #endif // QACCESSIBLE_H
998 #endif //!QT_NO_ACCESSIBILITY
999